JP5360029B2 - Vacuum insulation, insulation wall, refrigerator, water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain core materials having step difference and a slant face part at an end, a heat insulating wall realizing easy manufacturing of a vacuum heat insulating material and having excellent heat insulating performance, and to provide a refrigerator thereof. <P>SOLUTION: A vacuum heat insulating material comprises a core material formed by laminating a plurality of sheet-like fiber aggregates having a predetermined width so as to form a slant face part in which the thickness of an end in a longitudinal direction or an end in a width direction is gradually or stepwisely reduced toward the outside in the longitudinal direction or width direction, and a gas barrier type outer packaging material accommodating the core material thereinside and containing a seal part having a periphery sealed with the inside depressurized. The outer packaging material is sealed by sealing the seal part with the inside thereof kept in a substantially vacuum state. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a vacuum heat insulating material and a refrigerator using the vacuum heat insulating material.

  Conventionally, urethane foam has been used as a heat insulating material used in a heat insulating box such as a refrigerator. In recent years, due to market demands for energy saving and space saving and large capacity, a form in which a vacuum heat insulating material having better heat insulating performance than urethane foam is embedded in urethane foam is used. Such a vacuum heat insulating material is also used for a refrigerator or the like.

  The vacuum heat insulating material is configured by inserting powder, foam, fiber or the like as a core material into an outer packaging material made of a plastic laminate film using an aluminum foil as a gas barrier layer. The inside of the vacuum heat insulating material is kept at a degree of vacuum of several Pa (Pascal) or less.

  Further, an adsorbent that adsorbs gas and moisture is disposed in the outer packaging material in order to suppress the deterioration of the degree of vacuum, which is a factor of lowering the heat insulating performance of the vacuum heat insulating material. As the core material of the vacuum heat insulating material, powders such as silica, foams such as urethane, fiber bodies and the like are used. At present, glass fibers having excellent heat insulation performance are mainly used as core materials for vacuum heat insulating materials.

  Examples of the fiber material include inorganic fibers such as glass fibers and ceramic fibers (see, for example, Patent Document 1 and Patent Document 8).

  In addition, there are organic fibers such as polypropylene fiber, polylactic acid fiber, aramid fiber, LCP (liquid crystal polymer) fiber, polyethylene terephthalate fiber, polyester fiber, polyethylene fiber, and cellulose fiber (see, for example, Patent Document 2 and Patent Document 7).

  The shape of the fibrous body is cotton-like, laminated sheets (for example, see Patent Document 3 and Patent Document 4), or laminated sheets so that fiber orientations alternate (for example, Patent Document 5). And Patent Document 6).

  Moreover, in the lamination method of a sheet | seat, there exists what laminates | stacks so that it may overlap | superpose by folding up the continuous strip | belt-shaped sheet-like member to a different direction alternately (for example, refer patent document 9).

  Moreover, the refrigerator which uses the vacuum heat insulating material from which thickness differs, and has arrange | positioned the thick part to the freezing temperature chamber side with a large temperature gradient with the exterior is described (for example, refer patent document 10).

  In addition, the side surface of the vacuum heat insulating material is inclined so that the side walls of the adjacent vacuum heat insulating materials can be in close contact with each other, and the inclined surface on the side surface of the adjacent vacuum heat insulating material is pressed as a guide surface. The thing arrange | positioned around the hot water storage tank by sticking the whole is described (for example, refer patent document 11).

  Moreover, what provided the inclination in the edge part of the vacuum heat insulating material for the fluidity | liquidity improvement of urethane foam is described (for example, refer patent document 12).

JP-A-8-028776 JP 2002-188791 A JP 2005-344832 A JP 2006-307921 A JP 2006-017151 A Japanese Examined Patent Publication No. 7-103955 JP 2006-283817 A JP 2005-344870 A JP-A-62-204093 JP 2006-182896 A JP 2007-212061 A JP 2000-320958 A

  Thus, glass fibers are mainly used as the core material in current vacuum heat insulating materials. However, since glass fiber is hard and brittle, dust may be scattered during the manufacture of a vacuum heat insulating material, which may cause irritation when it adheres to the skin / mucous membrane of an operator, and its handling and workability are issues.

  Further, from the viewpoint of recycling, for example, in a refrigerator, each product is pulverized in a recycling factory. At this time, the glass fiber is mixed with urethane waste and is subjected to thermal recycling. Glass fiber has the problem that recyclability is not good, such as reducing combustion efficiency and becoming a residue.

  On the other hand, those using polyester fibers as the core material are excellent in handling properties and recyclability. However, those using polyester fibers as the core material have a thermal conductivity of about 0.0030 [W / mK], which is an index representing heat insulation performance (see, for example, Patent Document 7). The thing using polyester fiber as a core material has the difficulty that it is inferior to heat insulation performance compared with the general vacuum heat insulating material (about thermal conductivity 0.0020 [W / mK] grade) which used glass fiber as a core material. .

  For this reason, it is possible to improve the heat insulation performance by thinning the organic fiber layer and making the fiber orientation perpendicular to the heat transfer direction. However, in that case, the number of laminated sheets becomes several hundred or more, and the productivity is poor. In addition, bending is also difficult to bend because of the large number of stacked layers, and handling and productivity are poor.

  In addition, when a vacuum insulation material is manufactured by inserting a core material such as glass fiber into an outer packaging material such as an aluminum foil laminate film and sealing the inside under reduced pressure, the core material is enclosed in an outer packaging material such as an aluminum foil laminate film. When using inorganic fibers such as glass fiber for insertion, the glass fiber may pierce the outer packaging material and damage or break the outer packaging material. If the glass fiber core material is not inserted directly into the outer packaging material, It is inserted into the outer packaging material in a state where it is inserted into a separate bag such as a bag, and an extra plastic bag is required, which complicates the manufacturing process of the core material and vacuum insulation material, and increases the cost. It was.

  In addition, as in Patent Document 9, it is also possible to form a core material by laminating continuous belt-like sheet-like members (waste paper) by alternately folding them in different directions so as to overlap each other. An apparatus for folding and folding is required, and the structure of the folding apparatus is complicated, expensive, and costly.

  Moreover, in the case of the vacuum heat insulating material which used glass fiber for the core material, glass fiber is excellent in heat insulation performance. However, since glass fiber is hard and brittle, it is difficult to perform bending after vacuum.

  Moreover, in the case of the vacuum heat insulating material which used glass fiber for the core material, glass fiber is excellent in heat insulation performance. However, since glass fiber is hard and brittle, it cannot be deformed into a pipe shape even if it is attempted to insulate by placing a pipe such as a condensation pipe between a vacuum heat insulating material and a vacuum heat insulating material. There is a corresponding gap. For this reason, heat leaks from the gaps between the vacuum heat insulating materials, and the heat insulating performance is greatly deteriorated.

  Further, when organic fibers are used for the core material, when a plurality of sheets are stacked to form a core material, the number of vacuum heat insulating materials stacked increases as the number of layers increases. For this reason, when bending is performed after the vacuum, there is a problem that it is difficult to bend at a portion that needs to be bent, and the portion that is not desired to be bent is deformed.

  Moreover, in the vacuum heat insulating material described in Patent Document 10, an inorganic fiber is used as a core material to change the laminated thickness to provide a step, but as described above, glass fiber is hard and brittle. When manufacturing vacuum insulation material, dust may scatter and adhere to the skin or mucous membrane of workers, which may cause irritation, and its handling and workability are problematic. From the viewpoint of recycling, for example, refrigerators Then, each product is pulverized in a recycling factory. At this time, the glass fiber is mixed with urethane waste and is subjected to thermal recycling. There is also a problem that glass fiber is not recyclable, such as reducing combustion efficiency or becoming a residue. In addition, it is necessary to prepare a plurality of core materials having different sizes in order to form a step, which takes time, cost, and labor.

  Moreover, in the vacuum heat insulating material of patent document 11 and patent document 12, although the end surface shape of a vacuum heat insulating material is inclined, the process which inclines a core material, such as cutting a core material diagonally, is difficult, and is troublesome. And time was required, and the cost was increased. Further, the shape of the end face when the vacuum heat insulating materials are arranged in parallel has not been considered.

  Moreover, the improvement of the heat insulation performance in the application of the vacuum heat insulating material into the heat insulating wall surface such as a partition wall that gradually decreases in thickness toward the tip has not been considered.

This invention was made in order to solve the above subjects, and it aims at providing the vacuum heat insulating material which has at least one of the characteristics shown below, and the refrigerator using this vacuum heat insulating material.
(1) Good heat insulation performance and excellent productivity (particularly core material productivity).
(2) Good heat insulation performance and excellent handling and recycling.
(3) When an organic fiber aggregate is used for the core material, the productivity is excellent.
(4) The core material can be manufactured according to the bending size of the bending process, and the manufacturing is easy.
(5) A core material having a step, a core material having a slope at the end, and a vacuum heat insulating material can be easily manufactured.
(6) A vacuum heat insulating material with little heat leakage can be easily manufactured even if a plurality of the heat insulating materials are arranged in the length direction or the width direction.
(7) A heat insulating wall and a refrigerator excellent in heat insulating performance can be obtained.

  In the vacuum heat insulating material according to the present invention, a slope portion in which the end portion in the length direction or the end portion in the width direction is gradually or stepwise reduced in thickness toward the outside in the length direction or the width direction is formed. As described above, a gas barrier property having a core material in which a plurality of sheet-like fiber assemblies having a predetermined width are laminated, and a seal portion that stores the core material inside and seals the periphery in a state where the inside is decompressed An outer packaging material, and the outer packaging material is sealed by sealing the seal portion in a substantially vacuum state inside the outer packaging material.

According to this invention , it is possible to obtain a vacuum heat insulating material having a good heat insulating performance, a heat insulating wall provided with the vacuum heat insulating material, and a partition wall.

  Moreover, if the core material of this invention is used, apparatuses, such as a vacuum heat insulating material excellent in handling property, heat insulation performance, and productivity, and a refrigerator provided with this vacuum heat insulating material can be provided.

FIG. 5 shows the first embodiment and is a schematic view of the vacuum heat insulating material 7 and is a perspective view of the core material 5 of the vacuum heat insulating material 7 in which a plurality of nonwoven fabric sheets are laminated. FIG. 5 shows the first embodiment and is a schematic view of the vacuum heat insulating material 7 and is a side view showing the orientation of fibers in one nonwoven fabric sheet. FIG. 5 shows the first embodiment, and is a schematic diagram of the vacuum heat insulating material 7, and is a side view showing the fiber orientation when the core material 5 has a thickness. FIG. 5 shows the first embodiment and is an exploded perspective view showing the configuration of the vacuum heat insulating material 7. FIG. 5 is a diagram showing the first embodiment and is a perspective view schematically showing a stacked state of the core material 5 forming the vacuum heat insulating material 7. FIG. 5 is a diagram showing the first embodiment, and is a perspective view schematically showing a raw fabric roller and a winding frame of a laminating device for a core material 5 that forms a vacuum heat insulating material 7. It is a figure which shows Embodiment 1, and is a figure showing the structure of the winding frame of a vacuum heat insulating material manufacturing apparatus, Fig.7 (a) represents the state of the winding frame when winding an organic fiber assembly, FIG. FIG. 7B is a diagram illustrating a state of the reel when the reel is removed (removed) from the continuous sheet-like fiber assembly 1J after the continuous sheet-like fiber assembly 1J is wound up. The figure which shows Embodiment 1 and represents the clamp member which clamps the organic fiber aggregate wound up by the winding frame of a vacuum heat insulating material manufacturing apparatus. FIG. 5 shows the first embodiment and shows a method for manufacturing a vacuum heat insulating material. FIG. 5 shows the first embodiment and is a schematic diagram of another reel. The figure which shows Embodiment 1 and is a figure showing the structure of the combination original fabric roll which has one big width | variety combining several original fabric rolls. FIG. 5 shows the first embodiment, and is a schematic diagram of a winding device when two combined original fabric rolls are used and wound on a winding frame. The figure which shows Embodiment 1, and is the schematic diagram showing the structure of the organic fiber assembly wound up by the winding apparatus which uses two combination original fabric rolls (upper original fabric roll, lower original fabric roll). FIG. 5 shows the first embodiment, and is a cross-sectional view of a core material wound up by a winding device that uses two combined original fabric rolls. The figure which shows Embodiment 1 and is the perspective view of the core material 550 at the time of winding up on a winding frame using the combination original fabric roll which combined three original fabric rolls, and manufacturing the core material 550. FIG. The figure which shows Embodiment 1 and is a figure for demonstrating the structure of another combination original fabric roll. FIG. 5 shows the first embodiment and is a perspective view showing a state where the vacuum heat insulating material 750 is bent. FIG. 5 shows the first embodiment and is a view of the vacuum heat insulating material 750 as viewed from the width direction. FIG. 3 shows the first embodiment and is a cross-sectional view of the refrigerator 100. FIG. In the figure showing Embodiment 1, at least one original fabric roll 1307 having a first predetermined width and an original fabric roll having a width smaller than the first predetermined width are made substantially equal to the first predetermined width. It is a schematic diagram of the winding apparatus in the case of winding up to the winding frame 1311 using the at least 1 combination original fabric roll 1305 combined with the width direction, and represents the manufacturing method of another core material of this Embodiment. Figure. FIG. 5 shows the first embodiment, and is a perspective view of a core material manufactured by winding it on a winding frame using at least one original fabric roll 1307 having a predetermined width and at least one combined original fabric roll. FIG. 5 is a diagram showing the first embodiment, and is a cross-sectional view of a core material manufactured by winding it on a winding frame using at least one original fabric roll having a predetermined width and at least one combined original fabric roll. FIG. 5 is a diagram showing the first embodiment, and is a perspective view of a vacuum heat insulating material using a core material manufactured by winding it on a winding frame using at least one original fabric roll having a predetermined width and at least one combined original fabric roll. Figure. FIG. 5 shows the first embodiment and is a schematic diagram showing the shape of a vacuum heat insulating material. FIG. 5 is a diagram illustrating the first embodiment, and winds around a reel using at least one original fabric roll having a fourth predetermined width and at least one original fabric roll having a width smaller than the fourth predetermined width. The schematic diagram of the winding apparatus in the case. It is a figure which shows Embodiment 1, and is the schematic diagram of the core material manufactured by shape | molding in flat form after winding up with the winding apparatus of FIG. 25, and a vacuum heat insulating material. FIG. 27 shows the first embodiment, and shows a vacuum heat insulating material sealed after inserting the core material of FIG. 26 into the outer packaging material and reducing the pressure. FIG. 3 is a diagram illustrating the first embodiment and is an explanatory diagram schematically illustrating a stacked state of core materials forming a vacuum heat insulating material. FIG. 5 shows the first embodiment, and shows a method for manufacturing a core material. FIG. 30 shows the first embodiment and shows the core material manufactured by the manufacturing method of FIG. 29. The figure which shows Embodiment 1 and is a figure explaining the structure of a heat insulation wall (heat insulation member).

Embodiment 1 FIG.
1 to 4 are diagrams showing Embodiment 1, FIG. 1 is a schematic view of a vacuum heat insulating material 7, and is a perspective view of a core material 5 of a vacuum heat insulating material 7 in which a plurality of nonwoven fabric sheets are laminated, FIG. It is the schematic diagram of the vacuum heat insulating material 7, Comprising: The side view showing the orientation of the fiber in one nonwoven fabric sheet, FIG. 3 is the schematic diagram of the vacuum heat insulating material 7, Comprising: The fiber in case the core material 5 has thickness FIG. 4 is an exploded perspective view showing the configuration of the vacuum heat insulating material 7.

(Laminated structure)
In FIG. 1, the core material 5 has a laminated structure in which, for example, a sheet-like organic fiber aggregate (hereinafter, referred to as “organic fiber aggregate 1”) in which at least one end face 1a is cut is laminated. That is, the core material 5 shown in FIG. 1 forms a sheet shape in which a plurality of substantially rectangular organic fiber assemblies 1 are stacked and then four substantially rectangular sides are cut. Alternatively, after the four sides of the substantially rectangular organic fiber assembly 1 are cut, a plurality of layers are laminated to form a substantially rectangular sheet shape.

  In FIG. 2, the organic fiber assembly 1 includes a plurality of organic fibers 2x arranged at predetermined intervals, and a plurality of organic fibers 2x arranged at predetermined intervals in a direction substantially orthogonal to the organic fibers 2x. And organic fiber 2y.

  At this time, the organic fiber 2x and the organic fiber 2y are substantially in point contact. Between the organic fibers 2y, an air layer 3 which is a heat insulating space is formed.

  The organic fiber 2x and the organic fiber 2y are collectively referred to as an organic fiber 2.

  Here, as shown in FIG. 3, when the thickness of one sheet (organic fiber assembly 1) is increased, the fibers are easily oriented so as to face the thickness direction, which is the heat transfer direction. In particular, when the organic fiber 2 (sometimes simply referred to as a fiber) is a short fiber having a short fiber length (for example, a fiber length of about 5 to 150 mm), the short fiber faces the thickness direction, which is a heat transfer direction. It becomes easy to be oriented like this. Heat is transmitted from the front side to the back side of the sheet via the short fibers (indicated by arrows in FIG. 3), and the heat insulating performance is deteriorated.

  Therefore, by thinly laminating the organic fiber assembly 1 into a thin sheet shape, the fibers are in the heat transfer direction (the fiber lamination direction of the organic fiber assembly 1, the thickness of the sheet-like organic fiber assembly 1). It is possible to suppress the orientation in the (direction). Thereby, it can suppress that heat | fever transfers through the fiber orientated toward the heat-transfer direction, and heat insulation performance falls. Therefore, the thermal conductivity of the core material 5 can be reduced, and the heat insulation performance can be improved.

  In FIG. 2, a solid line arrow and a dotted line arrow indicate directions in which heat is transmitted. Since the organic fiber 2x and the organic fiber 2y are substantially orthogonal to each other, the contact portion between the organic fiber 2x and the organic fiber 2y becomes a point contact, so that the heat resistance is increased and the heat insulation performance is improved.

  In addition, although the above has shown the case where the organic fiber 2x and the organic fiber 2y are mutually orthogonally crossed, this Embodiment is not limited to this. The organic fibers 2x and the organic fibers 2y may intersect at an angle that is not perpendicular to each other. It is sufficient that all of the organic fibers 2x and the organic fibers 2y are not arranged in parallel. If it is possible to suppress even a slight decrease in heat insulation performance due to heat transmitted through the fibers oriented in the heat transfer direction, the heat insulation performance can be improved.

  In FIG. 4, the vacuum heat insulating material 7 includes a gas barrier container (hereinafter referred to as “external packaging material 4”) having air barrier properties, a core material 5 and an adsorbent 6 (for example, gas) enclosed in the external packaging material 4. Adsorbent and moisture adsorbent (CaO). The inside of the outer packaging material 4 is depressurized to a predetermined degree of vacuum (several Pa (pascal) to several hundred Pa).

(Organic fiber)
As a material used for the organic fiber 2 that forms the core material 5 of the vacuum heat insulating material 7, it is possible to use polyester, and also polypropylene, polylactic acid, aramid, LCP (liquid crystal polymer), PPS (polyphenylene sulfide), polystyrene, and the like. it can. Further, in order to improve the heat resistance of the core material 5, a heat resistant resin such as LCP (liquid crystal polymer) or PPS (polyphenylene sulfide) may be used for the organic fiber 2. Moreover, what is necessary is just to use a thing with a big fiber diameter, when improving compression creep characteristics. Moreover, if it mixes and uses said resin, the vacuum heat insulating material 7 with the high heat resistance excellent in the compression creep characteristic and high heat insulation will be obtained. Polystyrene has a low solid thermal conductivity and can be expected to improve the heat insulating performance of the heat insulating material, and can be manufactured at low cost.

  Polypropylene has low hygroscopicity, so that drying time and evacuation time can be shortened and productivity can be improved. Moreover, since the solid heat conduction is small, the heat insulation performance of the vacuum heat insulating material 7 can be expected.

  Moreover, since polylactic acid is biodegradable, the core material disassembled and separated after use of the product can be subjected to landfill treatment.

  In addition, since aramid and LCP have high rigidity, they have good merits such as good shape retention when vacuum-packed and subjected to atmospheric pressure, can increase the porosity, and can be expected to improve heat insulation performance.

  For example, in the vacuum heat insulating material 7 using a plastic laminate film for the outer packaging material 4, the core material 5 supports the atmospheric pressure to secure a space in the vacuum heat insulating material 7, and finely divides the space to heat the gas. It plays a role of reducing conduction. From the viewpoint of suppressing heat conduction of gas, it is desirable that the distance of this space be smaller than the free stroke distance of air molecules at the degree of vacuum.

  In the present embodiment, since the organic fiber 2 is used for the core material 5 of the vacuum heat insulating material 7, for example, compared to the case where a hard and brittle glass fiber is used as a core material as in the past, When the vacuum heat insulating material 7 is manufactured, dust does not scatter and adhere to the operator's skin, mucous membrane, etc., and irritation is eliminated, improving handling and workability.

(Manufacturing method of fiber assembly material (raw fabric roll material))
An organic fiber assembly 1 (same as an organic fiber assembly and a sheet-like assembly) that forms the core material 5 is a polyester resin, a polystyrene resin, or the like that is heated and melted from a number of nozzles arranged in a row with respect to the width to be manufactured. The resin is freely dropped on a conveyor, and the conveyor is moved at an arbitrary speed, is pressed with a pressure roller, and is wound around a cylindrical original roll to produce a substantially cylindrical original roll material. The bulk density of the organic fiber assembly 1 can be adjusted by the amount of molten resin discharged and the speed of the conveyor to obtain fiber assemblies having different thicknesses.

  Moreover, the long fiber nonwoven fabric which is the organic fiber assembly 1 is obtained by collecting continuous fibers melted by an extruder and extruded from a spinning nozzle on a conveyor, and forming the conveyor into a sheet form at an arbitrary speed. Thus, a continuous long-fiber non-woven fabric that can be wound on the raw fabric roller is obtained. Since a continuous sheet-like organic fiber assembly 1 formed of continuous organic fibers 2 can be obtained, it can be continuously wound on a cylindrical raw fabric roller, and a raw fabric roll of a long-fiber nonwoven fabric can be obtained. become.

  In spinning, after the resin is cooled with cold air directly under the nozzle, it is fiberized by drawing with compressed air or the like, or by blowing with high-temperature air equivalent to the melting temperature of the resin from the nozzle hole side. Can be used.

  Note that the organic fiber assembly 1 obtained by the above-described method may have poor handleability when the vacuum heat insulating material 7 is manufactured because the organic fibers 2 are separated from each other. Therefore, the organic fibers 2 may be heated and welded together during pressurization. At this time, excessive pressurization and heat welding increase the contact area between the organic fibers 2 and increase heat transfer, causing heat conduction from the welded portion and causing a decrease in heat insulation performance. Therefore, it is better to reduce the contact area between the organic fibers 2 as much as possible. The contact area between the organic fibers 2 is desirably 20% or less, preferably 15% or less, and more preferably 8% or less of the total area (sheet area).

  It has been confirmed that the thermal conductivity increases when the proportion of heating welding exceeds 20% of the total area (sheet area), and the heat insulation performance deteriorates, so the proportion of heating welding accounts for the total area (sheet area). Is preferably 20% or less. Here, if the proportion occupied by heat welding with respect to the total area (sheet area) is reduced, the heat insulation performance is remarkably improved, so the proportion occupied by heat welding is 15% or less of the total area (sheet area), It is desirable to suppress it to 8% or less of the total area (sheet area).

  Heat welding is performed with a heat roller or the like, for example, by embossing with a dot-like welded portion to obtain a long-fiber nonwoven fabric (organic fiber aggregate 1) that can be wound while ensuring handling strength and has good heat insulation performance. It is done. In the present embodiment, the temperature of the heat roller may be about 195 ° C.

  Here, instead of heat welding, a needle punch method in which a large number of hooked needles are pierced and pulled up vertically, and the fibers are entangled with each other so that the fibers do not fall apart. However, it is preferable to form the sheet by heat welding (for example, embossing) because it can be handled with simple equipment and the work on the conveyor is easy.

(Fiber diameter)
In the first embodiment, for example, the organic fiber assembly 1 is used as the fiber assembly. The fiber diameter of the organic fiber assembly 1 is adjusted to about 15 μm by adjusting the diameter of the nozzle for molding the organic fiber assembly 1. In terms of heat insulation performance, the thinner fiber diameter is better. Theoretically, the fiber diameter is preferably smaller from the relationship between the degree of internal vacuum of the vacuum heat insulating material 7, the spatial distance subdivided by the fiber, and the free path distance of gas molecules. The fiber diameter is desirably 15 μm or less, preferably 10 μm or less, and an average fiber diameter of about 9 μm may be used.

The average fiber diameter may be measured by measuring several to several tens (for example, ten) using a microscope and using the average value. The weight per unit area (fiber weight per 1 m ² (g)) may be obtained as a weight per unit area of one sheet by measuring the area and weight of one sheet.

  In the present embodiment, the fiber orientation direction is aligned in a direction substantially perpendicular to the thickness direction, which is the heat insulation direction, and a multilayer structure in which a plurality of organic fiber assemblies 1 are stacked is formed.

  Moreover, when the short fiber nonwoven fabric is used for the organic fiber assembly 1, the fiber length is short, and thus the organic fiber 2x and the organic fiber 2y are easily oriented in the heat insulating direction (sheet thickness direction). In order to suppress the heat from being transmitted through the fibers oriented in the heat insulation direction and the heat insulation performance from being lowered, a long fiber nonwoven fabric using long fibers is used.

  In this embodiment, since the length of the fiber is substantially equal to or longer than the length of the sheet, the fiber is cut in the middle of the sheet, and a part of the fiber (the middle) and the end are in the direction of heat insulation. Therefore, the heat insulation performance is not deteriorated.

(Fiber assembly lamination method, core material production method 1)
Next, the end surface 1a of the obtained sheet-like organic fiber assembly 1 is cut (cut) so as to have a predetermined size (width 210 mm × length 297 mm), for example. These were laminated in a plurality of layers (for example, 25 layers) to form the core material 5 having a predetermined size and thickness in which the end face 5a was cut. The core material 5 may be formed in a predetermined size by cutting the end surface 5a after laminating a plurality of sheet-like organic fiber assemblies 1. In addition, you may set the number of sheets to laminate | stack arbitrarily based on the thickness of the obtained organic fiber assembly 1, and the thickness of the vacuum heat insulating material 7 to manufacture.

(Outer packaging material)
A laminate film having a thickness of 5 μm or more and 100 μm or less is used for the outer packaging material 4 (FIG. 4) of the vacuum heat insulating material 7. In this embodiment, for example, a plastic laminate film having a gas barrier property composed of nylon (6 μm), aluminum vapor-deposited PET (polyethylene terephthalate) (10 μm), aluminum foil (6 μm), and high-density polyethylene (50 μm) is used. ing.

  If a laminate film that does not contain aluminum foil such as polypropylene, polyvinyl alcohol, or polypropylene is used for the outer packaging material 4 of the vacuum heat insulating material 7, it is possible to suppress a decrease in heat insulating performance due to heat bridge. In addition, three sides of the four sides of the outer packaging material 4 are heat sealed by a seal wrapping machine. The remaining side is heat sealed after inserting the core material 5.

(Vacuum insulation material manufacturing method 1)
The vacuum heat insulating material 7 is manufactured by first inserting a core material 5 having a predetermined size and thickness into a bag-shaped outer packaging material 4 having an opening 4a, and fixing the opening 4a so as not to be closed. And dried at about 105 ° C. for half a day (about 12 hours). Thereafter, an adsorbent 6 (gas adsorbent, moisture adsorbent, etc.) for adsorbing residual gas after vacuum packaging, outgas from the core material 5 released over time, and permeate gas entering through the sealing layer of the outer packaging material 4 ) Was inserted into the outer packaging material 4 (film bag), and evacuation (decompression treatment) was performed with a Kashiwagi type vacuum packaging machine (NPC; KT-650). Vacuuming was performed until the degree of vacuum in the chamber reached about 1 to 10 Pa, and the opening 4a of the outer packaging material 4 (film bag) was heat-sealed in the chamber as it was to obtain a plate-like vacuum heat insulating material 7.

(Fiber assembly lamination method, core material production method 2)
As described above, the sheet-like organic fiber assembly 1 may be cut into a predetermined size and stacked to form a core material 5 to produce the vacuum heat insulating material 7, or the sheet-like organic fiber may be produced. After stacking a plurality of aggregates 1, the end face 5 a may be cut and formed into a predetermined size to form the core material 5 to manufacture the vacuum heat insulating material 7. A manufacturing method will be described. A method of manufacturing the core material 5 by continuously winding a continuous sheet-like fiber assembly (for example, the organic fiber assembly 1) will be described.

  5 and 6 are diagrams showing the first embodiment. FIG. 5 is a perspective view schematically showing a laminated state of the core material 5 forming the vacuum heat insulating material 7. FIG. 6 is a core forming the vacuum heat insulating material 7. FIG. 6 is a perspective view schematically showing a raw fabric roller and a winding frame of a stacking apparatus for materials 5.

  5 and 6, a continuous sheet-like fiber aggregate 1J (eg, organic fiber aggregate 1 having a thickness of about 30 μm to about 500 μm, preferably formed of continuous fibers (eg, organic fibers 2), preferably 80 μm or more and 300 μm or less) after being wound on the winding frame 1311 with a predetermined tension such that the fiber is not cut and is not cut and is not sufficiently cut to have the necessary properties as a fiber. After being continuously wound, the core material 5 is manufactured by being formed into a flat plate shape. That is, the core material 5 is configured by a laminated structure of continuous sheet-like fiber assemblies 1J in which sheet-like fiber assemblies 1J continuous in the length direction (winding direction) are continuously wound from the inside toward the outside. Has been. Here, the core material 5 is formed into a flat plate shape having a width H, a length L, and a thickness t (see FIG. 5). Moreover, let the edge part of the winding end of the core material 5 be the winding end part 1Je.

  For example, the core material 5 is formed by continuously winding a continuous sheet-like fiber assembly 1J (original fabric roll 1301) having a predetermined width wound around a substantially cylindrical original fabric roller 1302 on the winding frame 1311 a plurality of times. In a state (a state in which the reel is continuously wound a predetermined number of times), the reel 1311 is pulled out in the axial direction of the reel 1311 (the axial center direction of the rotating shaft 1315 shifted by approximately 90 degrees with respect to the reeling direction). The continuous sheet-like fiber assembly 1J wound in a cylindrical shape is molded so as to be flattened (sheet-like). The flat core material 5 includes a flat plate portion 5g (smooth portion) in which a plurality of continuous sheet-like fiber assemblies 1J are laminated to form a flat plate shape (smooth shape), and both sides of the flat plate portion 5g with respect to the length direction. End portion (Since the continuous sheet-like fiber assembly 1J is wound in a continuous state in the winding direction, the continuous sheet-like fiber assembly 1J is bent and wound at both ends of the flat plate in the length direction. The continuous sheet-like fiber assembly 1J is bent into a flat plate shape (sheet shape, smooth shape) having a bent end portion 5f formed in a bent state.

  At this time, the core material 5 is formed into a flat plate shape, and the number of times R is wound around the winding frame 1311 so as to have a predetermined thickness t in a state of being sealed in a substantially vacuum state in the outer packaging material 4 is determined. . For example, if the required thickness t of the core material 5 (predetermined thickness of the core material 5) is 8 mm and the thickness of one continuous sheet-like fiber assembly 1J is 80 μm, the required number of laminated sheets Is 100 sheets (8 mm / 80 μm), the required number of windings R that must be wound around the winding frame 1311 is 50 times corresponding to 50 sheets of the continuous sheet-like fiber assembly 1J. Since the thickness t of the core material 5 is formed into a flat plate shape (sheet shape) by crushing the core material 5 in a state in which the winding frame 1311 is extracted (cylindrical shape), the number of times the core material 5 is wound around the raw roll 1301 The core material 5 has a thickness equivalent to 100 times the number of 50 times that is R, and the core material 5 is a state in which a plurality of continuous sheet-like fiber assemblies 1J are laminated (100 sheets being a predetermined number). It becomes.

  The width (predetermined width) H required for the core material 5 is appropriately determined depending on the width of the continuous sheet-like fiber assembly 1J (raw fabric roll 1301) wound around the raw fabric roller 1302 and the width of the winding frame 1311. Adjusted. For example, if the required width H (predetermined width) of the core material 5 is 1500 mm, the width of the winding frame 1311 is about 1500 mm which is the predetermined width or slightly larger than the predetermined width of 1500 mm (for example, 1520 mm). It is also possible to cut the excess part (both width parts) by setting the degree.

  7 and 8 are diagrams showing the first embodiment. FIG. 7 is a diagram showing the structure of the winding frame of the vacuum heat insulating material manufacturing apparatus. FIG. 7 (a) is a drawing of a continuous sheet-like fiber assembly 1J. FIG. 7B shows the state of the reel when removing the reel from the continuous sheet-like fiber assembly 1J after the winding of the continuous sheet-like fiber assembly 1J is completed. FIG. 8 is a diagram illustrating a state, and FIG. 8 is a diagram illustrating a clamp member that clamps the organic fiber assembly wound around the winding frame of the vacuum heat insulating material manufacturing apparatus.

  In the present embodiment, the winding frame 1311 has, for example, a substantially cylindrical shape, and is divided into a plurality of parts by, for example, a plurality of circumferential members 1312 in the circumferential direction. For example, the winding frame 1311 is divided into four by circumferential members 1312a, 1312b, 1312c, and 1312d. In FIG. 7, the circumferential member 1312 is not shown, but the circumferential members 1312a, 1312b, 1312c, and 1312d are collectively referred to as “circumferential member 1312”. Here, the circumferential member 1312 is a circumferential member connected to the rotary shaft 1315 of the winding frame 1311 on the inner peripheral side in the vicinity of the center in the circumferential direction of each of the divided circumferential members 1312a, 1312b, 1312c, and 1312d. Holding shafts 1316 (circumferential member holding shafts 1316a, 1316b, 1316c, and 1316d) are respectively provided, and a plurality of circumferential members 1312 are connected to the rotating shaft 1315 of the winding frame 1311 via the circumferential member holding shaft 1316. -Retained. A drive shaft that is driven by an electric motor or the like is inserted and connected to the rotating shaft 1315 of the winding frame 1311.

  At least one of the circumferential members 1312 divided into a plurality of parts (in this embodiment, four circumferential members 1312a, 1312b, 1312c, and 1312d) (in this embodiment, they face each other in the radial direction). The two circumferential members 1312a and 1312b) are provided with a circumferential member holding shaft 1316 (circular member holding shafts 1316a and 1316b in the present embodiment) that can be expanded and contracted in the radial direction. After the fiber assembly 1J is wound around the winding frame 1311, the circumferential member holding shafts 1316 and 1316b are moved in the direction of contraction toward the center in the radial direction, thereby winding the fiber assembly 1J around the winding frame 1311 in a substantially cylindrical shape. The tension of the continuous sheet-like fiber assembly 1J that has been made can be relaxed, and the continuous sheet-like fiber assembly 1J is wound in a substantially cylindrical shape from the winding frame 1311. It can be pulled out over preparative shaped fiber assembly 1J in the axial direction of the rotary shaft 1315. That is, the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is released from the reel 1311 by loosening the tension of the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 with a predetermined tension. Since it becomes easy to extract, it can extract easily, without damaging the continuous sheet-like fiber assembly 1J.

  Here, the winding frame 1311 is provided with a clamp member 1320 for holding or fixing the substantially cylindrical organic fiber assembly 1 after the winding frame 1311 is extracted at least at one place. In the present embodiment, the clamp member 1320 is attached to the clamp member installation portions 1313c and 1313d provided on the circumferential members 1312c and 1312d, or the circumferential member holding shafts 1316c and 1316d, respectively. Removably provided. Further, the two clamp member installation portions 1313c and 1313d are different from (for example, different from) the circumferential member holding shaft 1316 (in this embodiment, the circumferential member holding shafts 1316a and 1316b) that can expand and contract in the radial direction. The circumferential member holding shafts 1316c and 1316d) are provided.

  The clamp member 1320 includes a sheet-like fiber assembly 1J continuous around the winding frame 1311 wound in a substantially cylindrical shape, and the inner peripheral side of the substantially cylindrical continuous sheet-like fiber assembly 1J and the winding frame 1311. The continuous sheet-like fiber assembly 1 </ b> J is provided or can be held or fixed (for example, held or fixed by being sandwiched) between the outer peripheral side of the two. The clamp member 1320 has, for example, a rod shape or a plate shape, and may be provided on the reel 1311 side so as to be detachable from the reel 1311 before the continuous sheet-like fiber assembly 1J is wound. Between the sheet-like fiber assembly 1J (inner peripheral side) and the reel 1311 (outer peripheral side), which are continuous after the sheet-like fiber assembly 1J wound around the reel 1311, for example, two places The clamp member installation portion 1313 (for example, the clamp member installation portions 1313c and 1313d provided on the circumferential members 1312c and 1312d and the circumferential member holding shafts 1316c and 1316d) are provided so as to be inserted from the axial direction of the rotary shaft 1315. The continuous sheet-like fiber assembly 1J may be held, or the continuous sheet-like fiber assembly 1J is held at two clamp member installation portions 1313 (for example, Clamping member installation portion 1313 c, it may be held by sandwiching the two places in 1313 d). In addition, although the clamp member installation part 1313 is not illustrated in FIG. 8, the clamp member installation parts 1313c and 1313d are collectively referred to as “clamp member installation part 1313”.

  Here, in the present embodiment, the winding frame 1311 is disposed on the outer peripheral surface side of the circumferential member 1312 (for example, circumferential members 1312c and 1312d that are not movable in the radial direction) of the winding frame 1311 provided with the clamp member 1320. A clamp member installation portion 1313 that can be accommodated or inserted in the axial direction of the rotary shaft 1315 (for example, a recess or a cut provided to have a predetermined width (or length) in the direction of the rotary shaft 1315, for example) Etc.) are provided.

  The clamp member 1320 accommodated or inserted in the clamp member installation portion 1313 (for example, 1313c, 1313d) is, for example, a rod shape or a plate shape, and before the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311, The circumferential member 1312a, 1312b is provided in the clamp member installation portion 1313 (clamp member installation portions 1313c, 1313d) and wound around the winding frame 1311 after the continuous sheet-like fiber assembly 1J is wound around the radial direction. ) And the continuous sheet-like fiber assembly 1J, which is wound around the winding frame 1311 with a predetermined tension, is loosened, and then the continuous sheet-like fiber assembly 1J is clamped by the clamp member 1320. (In this embodiment, at least two locations (clamp member installation portions 1313c and 1313d) It may be from to) as withdrawn from the reel 1311.

  Alternatively, after the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311 with a predetermined tension in a substantially cylindrical shape, the inner peripheral side of the continuous sheet-like fiber assembly 1J and the outer peripheral side of the winding frame 1311 The axis of the rotating shaft 1315 of the winding frame 1311 in a recess or notch of a clamp member installation portion 1313 (clamp member installation portions 1313c, 1313d) provided on the circumferential members 1312c, 1312d that are not movable of the winding frame 1311 positioned therebetween At least one clamp member 1320 is inserted from the direction to clamp the substantially cylindrical continuous sheet-like fiber assembly 1J (in this embodiment, clamp at at least two locations (clamp member installation portions 1313c and 1313d). ) To move the circumferential members 1312a and 1312b in the radial direction toward the center (the direction in which the circumferential members 1312b contract), thereby applying a predetermined tension to the reel 1311. Tension wrapped substantially cylindrical continuous sheet-shaped fiber assembly 1J may be withdrawn reel 1311 by loosening the.

  Here, at least one clamp member 1320 (in this embodiment, two clamp members 1320c and 1320d) is detachably attached to the reel 1311, and at least one circumference of the reel 1311 is not movable. The members (in this embodiment, two circumferential members 1312c and 1312d) are provided.

  Thus, by moving at least one movable circumferential member 1312a, 1312b in the direction in which the tension is loosened, the substantially cylindrical continuous sheet-like fiber assembly 1J wound around the winding frame 1311 with a predetermined tension is provided. The tension can be easily released. Therefore, since the continuous sheet-like fiber assembly 1J can be easily detached from the winding frame 1311 without damaging or damaging the continuous sheet-like fiber assembly 1J or the organic fiber 2, the structure is simple and highly reliable. A winding device can be obtained, and a continuous sheet-like fiber assembly 1J and a vacuum heat insulating material 7 can be obtained at low cost and with high reliability.

  Here, there are two positions where the continuous sheet-like fiber assembly 1J is clamped at a position where the circumferential length of the cross-sectional circle of the substantially cylindrical fiber assembly 1J is divided into approximately equal lengths. (In the cross-sectional shape when a cross section in a direction substantially perpendicular to the axial direction of the rotary shaft 1315 of the winding frame 1311 is considered (in the case of a substantially cylindrical shape, the cross-sectional shape is substantially circular), A straight line passing through the center of rotation 1315 has two crossing shapes (cross-sectional outer shape, circumference in the case of a circle) (two places crossing the circumference in the case of a circle)).

  Therefore, since the clamping positions are two positions that divide the circumferential length of the outer shape of a substantially cylindrical cross section (circular in the case of a substantially cylindrical shape) into approximately two equal parts, the two clamp members 1320 (clamp members 1320c, 1320d) is removed from the winding frame 1311 while the continuous sheet-like fiber assembly 1J is clamped, and the two clamp members 1320c, 1320d are movable in a substantially linear direction opposite direction (approximately 180 degrees opposite direction) or Since the continuous sheet-like fiber assembly 1J that is wound a plurality of times by being moved and is stacked in multiple layers is pulled in the opposite direction by the two clamp members 1320c and 1320d, the portion clamped by the clamp members 1320c and 1320d The continuous sheet-like fiber assembly 1J is formed into a bent flat plate shape. Thereafter, the continuous sheet-like fiber assembly 1J is continuously extracted by being extracted from the continuous sheet-like fiber assembly 1J formed in a flat plate shape in a state where a plurality of layers of the clamp members 1320 (clamp members 1320c and 1320d) are stacked. A flat core material 5 having a predetermined width H and length L having a flat plate (sheet) -like flat plate portion 5g bent at the bent end portion 5f is formed.

(Vacuum insulation material manufacturing method 2)
Next, based on FIG. 9, the manufacturing method of the vacuum heat insulating material 7 in this Embodiment is demonstrated. FIG. 9 is a diagram illustrating the first embodiment and is a diagram illustrating a method for manufacturing a vacuum heat insulating material. In FIG. 9, FIGS. 9A to 9H show the steps of manufacturing the vacuum heat insulating material 7. FIG. 9A shows a winding start step in which a continuous sheet-like fiber assembly 1J (for example, an organic fiber assembly 1 made of continuous organic fibers 2 and a nonwoven fabric sheet) starts to be wound around the winding frame 1311. A continuous sheet-like fiber assembly 1J formed by winding a continuous sheet-like fiber assembly 1J a plurality of times and cut to a predetermined width, and a continuous sheet-like fiber assembly 1J wound around the original fabric roll 1301 are wound up. And a continuous sheet-like fiber assembly 1J wound around the original fabric roll 1301 by rotating the original fabric roll 1301 and the reel 1311 starts to be wound around the reel 1311. However, this process is a winding start step.

  FIG. 9B shows a winding end step in which the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311 a predetermined number of times R and winding is completed. In the winding start step, the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311 from the raw roll 1301. At this time, it is wound around the winding frame 1311 of the continuous sheet-like fiber assembly 1J. Since the thickness a (not shown) corresponds to a half thickness t / 2 of the required predetermined thickness t of the core material 5, winding is performed a predetermined number of times R corresponding to the predetermined thickness a. Then, the rotation of the web roll 1301 and the winding frame 1311 stops, and the winding of the continuous sheet-like fiber assembly 1J is completed. This process is a winding end step.

  FIG.9 (c) is a cutting step which cut | disconnects the continuous sheet-like fiber assembly 1J (for example, organic fiber assembly 1). In the winding end step, the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311. The number of windings R corresponds to a thickness t / 2 that is half of the required predetermined thickness t of the core material 5. Since the rotation of the original roll 1301 and the winding frame 1311 stops when the number of times is reached, the cutting step is a step of cutting the continuous sheet-like fiber assembly 1J at a predetermined location, and the continuous sheet-like fiber assembly In this step, 1J is cut at a predetermined cutting point between the original roll 1301 and the winding frame 1311 in a state where the front and rear of the predetermined cutting point are clamped, and the original roll 1301 is separated from the winding frame 1311.

  Here, the substantially cylindrical continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is clamped and held by a clamp member 1320 (clamp members 1320c and 1320d) (see FIG. 9D). . At this time, the cut end end 1Je (cut end face) of the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is not scattered, or the end end 1Je (cut end face) ) Is formed into the core member 5, the continuous sheet-like fiber assembly 1J is arranged at the bent end portion 5f as shown in FIG. 5 (that is, not to be positioned at the flat plate portion 5g). It is desirable to cut at a position after the position to be clamped at (for example, immediately after the position to be clamped).

  FIG. 9D shows a core material fixing step in which a substantially cylindrical continuous sheet-like fiber assembly 1J (for example, organic fiber assembly 1) is clamped by a clamp member 1320. After the continuous sheet-like fiber assembly 1J is cut in the cutting step, the clamp member 1320 is placed on the clamp member installation portion 1313 (clamp member installation portions 1313c and 1313d) such as a recess and a notch provided in the winding frame 1311. Is inserted, and the vicinity of the winding end 1Je (cut end surface) is clamped so that the winding end 1Je (cut end surface) of the continuous sheet-like fiber assembly 1J is not scattered or peeled off.

  FIG. 9E shows that at least one of the circumferential members (1312a to 1312d) provided in the circumferential direction of the winding frame 1311 is movable and deformed in the radial center direction. This is a winding frame deformation step for loosening the winding tension of the continuous sheet-like fiber assembly 1J wound around the winding frame 1311. In the core material fixing step, the vicinity of the winding end portion 1Je (cut end surface) is clamped. In the winding frame deformation step, the continuous sheet-like fiber assembly 1J has a predetermined thickness (t / t) on the winding frame 1311. 2) Among a plurality of circumferential members 1312 (circumferential members 1312a to 1312d) of the winding frame 1311 in a state of being wound up by a corresponding number of times R and clamped by the clamp members 1320 (clamp members 1320c and 1320d), At least one circumferential member (in this embodiment, two circumferential members 1312a and 1312b facing in the radial direction) is movable in a direction of contraction toward the center in the radial direction of the winding frame 1311. That is, after the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311, the circumferential member holding shafts 1316a and 1316b move in the direction of contraction toward the radial center, so that the circumferential members 1312a and 1312b are also moved. It moves in the direction of shrinking toward the center in the radial direction.

  Accordingly, the circumferential members 1312a and 1312b move in the direction of contraction toward the center in the radial direction, whereby the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 with a predetermined tension in a substantially cylindrical shape. Since the tension is loosened, the continuous sheet fiber assembly 1J wound in a substantially cylindrical shape can be easily extracted from the winding frame 1311 (a continuous sheet clamped from the axial direction of the rotating shaft 1315 of the winding frame 1311). The fibrous fiber assembly 1J can be easily extracted). That is, a continuous sheet-like shape wound around the winding frame 1311 by loosening the tension of the continuous sheet-like fiber assembly 1J (for example, the organic fiber assembly 1) wound around the winding frame 1311 with a predetermined tension. The fiber assembly 1J is easily extracted from the winding frame 1311.

  FIG. 9F shows a winding in which the winding frame 1311 is extracted from the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 and the winding frame is separated from the substantially cylindrical continuous sheet-like fiber assembly 1J. This is a frame separation step. A continuous sheet-like fiber wound around the reel 1311 by moving or deforming at least one circumferential member 1312 (circumferential members 1312a, 1312b) of the reel 1311 in the reel deformation step. Since the tension generated by winding the aggregate 1J is loosened, in the winding frame separation step, the substantially cylindrical continuous sheet-like fiber aggregate 1J with loosened tension is moved from the reel 1311 to the axial direction of the rotary shaft 1315. Pull out. Alternatively, the winding frame 1311 may be extracted while being clamped from the substantially cylindrical continuous sheet-like fiber assembly 1J.

  FIG. 9G shows a substantially cylindrical continuous sheet-like fiber assembly 1J separated from the winding frame 1311 in a substantially opposite direction (reverse direction) by a clamp member 1320 (clamp members 1320c and 1320d) which is a molded member. This is a core material forming step for forming the flat core material 5 by pulling. In the winding frame separating step, the continuous sheet-like fiber assembly 1J is separated from the winding frame 1311 while being clamped by the clamp member 1320, which is a molded member. Pulling the substantially cylindrical continuous sheet-like fiber assembly 1J that has been pulled out in a state of being clamped by the clamp members 1320c and 1320d, the two clamp members 1320c and 1320d to the opposite sides in the substantially linear direction, respectively. Since the substantially cylindrical continuous sheet-like fiber assembly 1J is folded at the clamp position of the clamp member 1320, which is a molded member, the plate-like (sheet-like) core material 5 having the bent end portion 5f and the flat plate portion 1311g is formed. Molded. The core material 5 composed of a continuous sheet-like fiber assembly 1J formed into a flat plate shape by a clamp member 1320, which is a forming member, is placed on the conveyor 1400 in a state where the bent end portion 5f is clamped by the two clamp members 1320. The clamp member 1320 is removed and the core material 5 is formed. That is, a continuous plate-like (sheet-like) continuous sheet-like fiber assembly 1J (eg, organic fiber assembly 1) formed from continuous fibers (eg, organic fibers 2) is continuous from the inside toward the outside. As a result, the flat core material 5 is formed and manufactured, and moves on the conveyor 1400.

  FIG. 9H shows that the core material 5 molded on the conveyor 1400 is substantially sealed in a state where the inside is decompressed after being inserted into the gas barrier outer packaging material 4 having the opening 4a having one end opened. It is a vacuum heat insulating material manufacturing step for manufacturing the vacuum heat insulating material 7. A core material 5 formed by laminating a plurality of continuous sheet-like fiber assemblies 1J and continuously winding from the inside toward the outside to form a flat plate has a gas barrier property having an opening 4a having at least one end opened. The vacuum heat insulating material 7 is completed by being inserted into the outer packaging material 4, transported in a vacuum furnace, and heat-sealing the sealing portion (for example, the opening 4 a) of the outer packaging material 4 in a substantially vacuum state.

  Here, since the circumferential member 1312 of the winding frame 1311 has a substantially continuous cylindrical shape in the winding direction (circumferential direction), it is wound when the continuous sheet-like fiber assembly 1J is wound around the winding frame 1311. The tension generated by the wire is substantially uniform in the winding direction (circumferential direction), and the continuous sheet-like fiber assembly 1J is not damaged or cut during winding. 7 is obtained.

  In the present embodiment, the circumferential member 1312 is used in which the winding direction (circumferential direction) is substantially continuous with the winding frame 1311 to form a substantially cylindrical shape. However, the circumferential member 1312 does not have to be a substantially cylindrical shape. It may be a hexagonal shape, a flat plate shape, or the like.

  FIG. 10 shows the first embodiment and is a schematic diagram of another reel. 10A is a diagram illustrating an example of an octagonal reel, and FIG. 10B is a diagram illustrating a state in which a continuous sheet-like fiber assembly 1J is wound around the octagonal reel. As shown in the figure, the circumferential member 1312 may not be continuous in the winding direction (circumferential direction). In FIG. 10, a reel 1311 is provided with eight rod-like (eg, prismatic or cylindrical) circumferential members 1312 that are provided approximately evenly in the circumferential direction, and is rotated from a raw roll 1301 by rotating around a rotating shaft 1315. The continuous sheet-like fiber assembly 1J is wound up. As shown in FIG. 10, for example, when a plurality of (for example, eight) circumferential members 1312 are not continuous in the winding direction, a prismatic shape, a columnar shape, or the like arranged at substantially equal intervals in the winding direction. A clamp member 1320 (see FIG. 8, not shown in FIG. 10) is inserted between the plurality of circumferential members 1312 (the space between the circumferential member 1312 and the circumferential member 1312) and wound around the winding frame 1311. Since the continuous sheet-like fiber assembly 1J can be clamped, the clamp member installation portion 1313 is not required, and the reel 1311 having a simple structure, light weight, and low cost can be obtained.

  In this embodiment, a continuous fiber roll 1301 of a long-fiber nonwoven fabric obtained by continuously winding a continuous sheet-like fiber assembly 1J formed of continuous organic fibers 2 around a substantially cylindrical raw fabric roller 1302. And a winding frame 1311 provided separately from the original fabric roll 1301 and having a predetermined width for winding the continuous sheet-like fiber assembly 1J of the continuous fiber nonwoven fabric of the original fabric roll 1301. A continuous sheet-like fiber assembly 1J (for example, the organic fiber assembly 1) wound around the roll 1311 on the original fabric roller 1302 is a predetermined number of times R (half the required predetermined thickness t of the core material 5). Since the sheet-like fiber assembly 1J continuous by the required predetermined thickness t of the core material 5 is laminated by winding it by an amount equivalent to the thickness t / 2, the predetermined size (width or length) is obtained. The cut nonwoven fabric sheets (fiber aggregates) do not need to be laminated one by one, and the core material 5 can be easily manufactured at low cost with an inexpensive manufacturing facility.

  That is, the core material 5 is a continuous sheet-like fiber assembly 1J (for example, the organic fiber assembly 1) formed from continuous fibers (for example, the organic fiber 2) is continuously wound from the inside to the outside. Of the four end faces of the substantially flat and flat core member 5, end portions in the length direction (bending end portions 5 f) are formed by folding (folding) a continuous sheet. Therefore, the two bent end portions 5f that have been bent (folded) are not cut end surfaces, so that the organic fibers 2 do not protrude from the bent end portions 5f, and the end surfaces do not protrude. Therefore, it is not necessary to cut the end face. Moreover, the core material 5 and the vacuum heat insulating material 7 which the number of parts (parts) to be cut are reduced and can be easily processed at low cost can be obtained. In addition, when the raw roll 1301 is cut into a necessary predetermined width and used, two end faces in the width direction of the four end faces of the substantially rectangular and flat core member 5 are the width of the core member 5. The two end surfaces in the width direction of the core material 5 are also cut into a predetermined width in advance when the raw roll 1301 is formed, and thus cut after being formed on the core material 5. The production line for the core material 5 is simplified, and the core material 5 and the vacuum heat insulating material 7 are obtained at low cost.

  In addition, since the fiber does not protrude from the end face of the core material 5 or the end face is not protruded, it is not necessary to cut the end face. By cutting the end face, the fiber length of the remaining fiber is shortened and the remaining fiber is cut. There is no loss of the sealing performance of the sealing portion of the outer packaging material 4 that protrudes from the end face.

  Also, as shown in FIG. 24, when using the core material 5,550,560 that is continuously wound from the inside to the outside of the vacuum heat insulating material 7,750,760 and laminated in a flat plate shape, The cross-section (cross-section perpendicular to the width direction) in the length direction of the end portion in the length direction (bending end portion 5f) of the core material 5 has a substantially triangular shape protruding outward. FIG. 24 is a diagram showing the first embodiment, and is a schematic diagram showing the shape of the vacuum heat insulating material. FIG. 24 (a) is a cross section in the length direction of the vacuum heat insulating materials 7, 750, 750 (a cross section perpendicular to the width direction). FIG. 24 (b) is a front view of the main part of the end portions in the length direction of the vacuum heat insulating materials 7, 750, 760 as viewed from the direction perpendicular to the length direction.

  In FIG. 24, when the core material 5 continuously wound from the inside to the outside on the vacuum heat insulating materials 7, 750, 760 and laminated in a flat plate shape is used, the flat smooth portion Lg (length) L1) and a substantially triangular lengthwise both ends Lf (length L2) having a cross section protruding outward. At this time, when both end portions (bent end portions 5f) in the length direction of the core material 5 are inserted into the outer packaging material 4 and sealed in a decompressed state, the cross-sectional shape of the length direction both end portions Lf (perpendicular to the width direction). The cross-sectional shape in the length direction (the cross-sectional shape perpendicular to the width direction (perpendicular shape) perpendicular to the width direction) protrudes outward. Since it becomes a substantially triangular shape, the outer packaging material 4 is more difficult to wrinkle and less likely to shake, and a highly reliable vacuum heat insulating material can be obtained. That is, a core material 5 having a predetermined width and a laminated structure in which a sheet-like fiber assembly continuous in the length direction is formed in a flat plate shape while being wound from the inside to the outside, and the core material 5 And the gas barrier outer packaging material 4 in which the opening 4a is sealed in a state where the inside is decompressed, and the core material 5 is decompressed in the outer packaging material 4. The cross-sectional shape perpendicular to the width direction at the end in the length direction of the core material 5 (the bent end portion 5f that is both ends in the length direction) protrudes outward toward the outside in the length direction. A vacuum insulation material having a substantially triangular shape is obtained. In addition, when processing one vacuum heat insulating material 7, 750, 760 by bending it into a cylindrical shape or the like, when connecting the end surfaces in the lengthwise direction to each other, or using two or more vacuum heat insulating materials 7 When the end faces are used in contact with each other, if the connection is made so that the slope portions (slope portions Lfs in FIG. 24) of the substantially triangular end faces protruding outside the plurality of vacuum heat insulating materials 7, 750, 760 are in contact with each other. It is possible to reduce the junction thickness of the contact portion, reduce heat leakage from the contact portion, and to install a device such as a refrigerator equipped with high-performance vacuum heat insulating materials 7, 750, 760 and vacuum heat insulating materials 7, 750, 760. Can be obtained.

(Fiber assembly lamination method, core material production method 3)
Next, a method for manufacturing the core material 5 by combining a plurality of raw fabric rolls 1301 will be described. FIG. 11 to FIG. 14 are diagrams showing Embodiment 1, FIG. 11 is a diagram showing the configuration of a combined original fabric roll having a large width by combining a plurality of original fabric rolls, and FIG. FIG. 13 is a schematic view of a winding device in the case of winding on a reel, and FIG. 13 is wound up by a winding device using two combined original rolls (upper original roll and lower original roll). FIG. 14 is a schematic view showing the configuration of the organic fiber assembly, and FIG. 14 is a cross-sectional view of the core material wound up by a winding device using two combined original fabric rolls.

  For example, a plurality of original fabric rolls (for example, main body A1301a, main body B1301b, main body C1301c, and main body D1301d) wound by substantially the same number of windings (the same number of stacked sheets) are adjacent in the width direction (lateral direction) ( Although it is desirable to arrange them without gaps, the first raw roll 1305 (upper roll) having a predetermined width is formed by combining them so that a predetermined gap may be provided as will be described later. A plurality of original fabric rolls wound by the same number of windings (the same number of stacked sheets) as in the case of the first original fabric roll 1305 (for example, main body E1301e, main body F1301f, main body G1301g, main body H1301h, A second raw roll 1306 (lower side) having a predetermined width is combined by adjoining (not shown) in the width direction (lateral direction) (desirably arranged without gaps, but a predetermined gap may be provided). Side roll).

  Here, the plurality of original fabric rolls (for example, main body A1301a, main body B1301b, main body C1301c, and main body D1301d) may have the same width or different widths. Similarly, a plurality of original rolls (for example, main body E1301e, main body F1301f, main body G1301g, and main body H1301h, which are not shown) may have the same width or different widths. The number of the plurality of original fabric rolls used for the original fabric roll 1305 and the number of the plurality of original fabric rolls used for the second original fabric roll 1306 may be the same or different.

  The first original roll 1305 and the second original roll 1306 are arranged in the width direction so that a plurality of original rolls (for example, a plurality of main parts) are adjacent to each other. (For example, main body A1301a, main body B1301b, etc.) have gaps (minute gaps, predetermined gaps), and adjacent main body parts (for example, main body A1301a, main body B1301b, etc.) are not continuous and intermittent. Therefore, a slit portion (for example, a slit portion A between the main body portion A1301a and the main body portion B1301b, a slit portion B between the main body portion B1301b and the main body portion C1301c, a slit portion C between the main body portion C1301c and the main body portion D1301d, etc. ) Exists. In the present embodiment, at least one of the first original fabric roll 1305 and the second original fabric roll 1306 is an original fabric roll (for example, disposed on the end side in the width direction of the plurality of original fabric rolls). , The main part A1301a, the main body part D1301d, the main body part E1301e, the main body part H1301h, etc.) using the ear part raw roll having the ear part that is not aligned with the ridge line generated when the raw roll material is cut to a predetermined width. (See FIG. 11).

  In the present embodiment, the number of the plurality of original fabric rolls used for the first original fabric roll 1305 (four main body parts A1301a, B1301b, main body part C1301c, and main body part D1301d) and the second original material roll 1305 are used. The number of the plurality of original fabric rolls used for the anti-roll 306 (four main body portions E1301e, F1301f, G1301g, and H1301h) is the same. In addition, a plurality of original rolls used for the first original roll 1305 (a main part A 1301 a, a main part B 1301 b, a main part C 1301 c, a main part D 1301 d) and a plurality of original rolls used for the second original roll 1306. The anti-rolls (main body part E1301e, main body part F1301f, main body part G1301g, main body part H1301h) are each shifted by a predetermined amount Xb (see FIG. 14) in the width direction and wound around the first original roll 1305. The first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H wound around the second raw fabric roll 1306 overlap vertically (substantially perpendicular to the sheet surface). Then, the sheet is wound around the reel 1311 together with a predetermined amount Xb shifted in the width direction of the sheet surface. For example, the first (organic) fiber assembly 1K may be an organic fiber assembly or other fiber assembly (for example, an inorganic fiber assembly). The same applies to the second (organic) fiber assembly 1H. At this time, the first original fabric roll 1305 and the second original fabric roll 1306 are moved in the moving direction (winding direction) of the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H. Are arranged in the front-rear direction, the up-down direction, or the oblique direction. The widths of the plurality of original fabric rolls of the second original fabric roll 1306 corresponding to the plurality of original fabric rolls of the first original fabric roll 1305 are made substantially equal and shifted by a predetermined amount Xb.

  That is, the individual original rolls (for example, the main body A1301a) constituting the first original roll 1305 and the second original rolls disposed behind (or below) the first original roll 1305. The widths of the individual fabric rolls (for example, the main body E1301e) constituting 1306 are substantially equal. Similarly, the respective original rolls (main body B1301b and main body F1301f, main body C1301c and main body G1301g, main body D1301d and main body H1301h) are set to have substantially the same width. However, it is desirable that the predetermined width of the first original roll 1305 (upper roll) and the predetermined width of the second original roll 1306 (lower roll) are substantially equal.

  Moreover, in this Embodiment, as shown in FIG. 12, arrangement | positioning with the 1st original fabric roll 1305 (upper roll) and the 2nd original fabric roll 1306 (lower roll) of a core material manufacturing apparatus is 1st. The original fabric roll 1305 (upper roll) is behind (or above) the second original fabric roll 1306 (lower roll) with respect to the winding frame 1311 direction (the feeding direction of the continuous sheet-like fiber assembly 1J). It is arranged diagonally above. In other words, the second original fabric roll 1306 (lower roll) and the first original fabric roll 1305 (upper roll) are arranged in this order toward the winding frame 1311. At this time, the first (organic) fiber assembly 1K wound around the first raw fabric roll 1305 (upper roll) is wound around the second original fabric roll 1306 (lower roll). The (organic) fiber assembly 1H is disposed on the upper side. The first (organic) fiber assembly 1K wound around the first original fabric roll 1305 (upper roll) is wound around the second original fabric roll 1306 (lower roll) because it is wound up by the winding frame 1311. The second (organic) fiber assembly 1H is always wound up so as to be positioned on the radially outer side of the winding frame 1311. Here, the first raw roll so that the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H are wound on the winding frame 1311 in a state where they overlap each other. What is necessary is just to arrange | position 1305 (upper roll) and the 2nd original fabric roll 1306 (lower roll).

  Here, if the predetermined width required for the product is small (for example, about 100 mm or about 200 mm), the original roll (first original roll 1305 (upper roll), second original roll 1306 (lower side) Roll) etc.) is also easy to manufacture without requiring a place. However, when a predetermined width required for the product is large (for example, 1100 mm or 2000 mm), an original roll (first original roll 1305 (upper roll)) , Production of the second original fabric roll 1306 (lower roll) or the like becomes difficult. In addition, depending on the product, vacuum heat insulating materials 7 having different widths may be required. However, if a single raw roll is to be used, the required number of raw rolls are required. Is difficult, and the number of original rolls increases and the cost increases. Therefore, in the present embodiment, a plurality of original fabric rolls are combined so as to be adjacent in the width direction and used as a combination roll (for example, a first original fabric roll 1305 and a second original fabric roll 1306).

  As in the present embodiment, a plurality of widths (different widths) of raw fabric rolls (for example, main body part A1301a, main body part B1301b, main body part C1301c, main body part D1301d) are adjacent to each other in the width direction and have one large width. If used as a raw fabric roll (for example, the first original fabric roll 1305), the width of each original fabric roll can be reduced, so that the original fabric roll (for example, the main body A1301a or the main body B1301b). Can be manufactured easily regardless of the manufacturing location. In addition, when a large width original roll is required, a plurality of small width original rolls are combined to form a single large roll (for example, the first original roll 1305 and the second original roll 1306). The core material 5 and the vacuum heat insulating material 7 can be manufactured at low cost with a high degree of design freedom, regardless of the production location of the raw material roll, and the number of types of raw material rolls can be reduced. Can do. For example, a plurality of original rolls having different widths (main body A1301a, main body B1301b, etc.) are combined, or a plurality of small original rolls having substantially the same width (for example, one original roll having the same width, such as main body B1301b). It is good also as one large width original fabric roll combining.

  Further, in the present embodiment, a first original fabric roll 1305 (a combined original fabric roll composed of a plurality of original fabric rolls (for example, a main body A1301a, a main body B1301b, a main body C1301c, a main body D1301d) ( The first (organic) fiber assembly 1K wound around the upper roll) and a plurality of original fabric rolls (for example, main body E1301e, main body F1301f, main body G1301g, main body H1301h) A predetermined amount Xb (for example, 5 mm to 40 mm) in the width direction (lateral direction) of the second (organic) fiber assembly 1H wound around the second original fabric roll 1306 (lower roll) that is the original fabric roll. Degree, preferably 10 mm to 20 mm). The reason is as follows.

  (1) For example, a plurality of original fabric rolls (main body portion A1301a, main body portion B1301b, main body portion C1301c, main body portion D1301d) constituting the first original fabric roll 1305 are adjacent to each other in the width direction (for example, The connection part of the main body part A1301a and the main body part B1301b, etc. actually has a slight gap, but even if it is in contact with no gap, there is a slit part (for example, between the main body part A and the main body part B). Since there is a slit portion A) between them, they are not continuous, so if a plurality of sheets are stacked without shifting by a predetermined amount Xb, the slit portions (connecting portions, adjacent portions) will be approximately at the same position, so they will be divided at the slit portion. Become so. That is, since the slit portion (connecting portion, adjacent portion) is not continuous, the required bending strength as the core material 5 is not obtained because the slit portion is broken or torn, and the slit portion (adjacent portion) is not continuous. Since it is not cut, it is separated from the outer packaging material 4 so that the core material 5 having a required width cannot be obtained, and the performance as the vacuum heat insulating material 7 cannot be obtained. In this embodiment, since the second original roll 1306 (lower roll) is shifted with respect to the first original roll 1305 (upper roll) so as to wrap by a predetermined amount Xb, a plurality of layers are laminated. It is possible to obtain a core material 5 having a required predetermined size having necessary heat insulation performance without being separated or divided at the slit portion (adjacent portion) due to friction of a portion shifted by a predetermined amount Xb. it can.

  (2) The first raw roll 1305 (upper roll) and the second original roll 1306 (lower roll) are shifted so as to wrap by a predetermined amount Xb at the adjacent portion, but the slit portion (adjacent portion) Therefore, the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H are not continuous on the same plane. Therefore, it becomes easy to bend at the slit portion. In the conventional vacuum heat insulating material, special measures such as forming a groove for bending are performed, and the manufacturing cost is increased, but in this embodiment, the adjacent part (slit part) is in the manufacturing process. Since it is easy to bend, it is used effectively by arranging the part that has become easy to bend in the part that needs to be bent. For example, in the case of a refrigerator, it is conceivable to arrange the vacuum heat insulating material 7 across wall surfaces bent at a predetermined angle (for example, approximately 90 degrees) such as a back wall and an upper surface wall. 7 is necessary, and it is necessary to bend, so a large manufacturing facility for manufacturing the raw roll material is required, so that the manufacturing place is limited or difficult to manufacture, and special processing for bending is required. Therefore, it was difficult to cope with the cost increase. In the vacuum heat insulating material 7 of the present embodiment, it is possible to use a plurality of original fabric rolls adjacent to each other in the width direction as a single large original fabric roll, and in addition, a slit portion (adjacent portion) is required to be bent. ) Can be selected, the width of the roll can be freely selected by combining the rolls with a small width, no special processing for bending is required, and the roll with a small width Since the core material 5 having a large width can be manufactured by combining a plurality of the above, it is possible to dispose the vacuum heat insulating material 7 across the wall surfaces bent at a predetermined angle such as a refrigerator which has been difficult in the past.

  (3) Both end portions in the width direction of the raw roll material before cutting both ends in the width direction are referred to as ears, and the thickness required for the fibers of the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J. Since there is not enough thickness, the thickness varies, and the edges of the width direction end face are not aligned. Therefore, when using as a raw roll, the raw roll material should be cut in the required width in advance on both sides. Used as an anti-roll. Therefore, the ear raw rolls obtained by cutting the ears at both side portions in the width direction from the raw roll material have been discarded in the past because the strength is weak and the end faces (ridge lines) are not aligned. In the present embodiment, the ear raw roll 1305 (which corresponds to the main body A1301a and the main body D1301d in the present embodiment, for example), which has been discarded in the past, is shown in FIG. And the second raw roll 1306 is used for a raw roll (for example, a main body A1301a or a main body D1301d) used on both sides in the width direction among the plurality of original rolls constituting the first raw roll 1306. Since the roll 1305 and the second material roll 1306 are shifted by a predetermined amount Xb and stacked in a plurality of layers, the ears and the parts that are not the ears are alternately stacked, and the positions of the ears are shifted. The ear part and the ear part are not laminated continuously. Therefore, the strength required for the core material 5 can be obtained even if the ear part roll is used.

  Here, as shown in FIG. 11, the first raw roll 1305 is arranged so that the main body A1301a, the main body B1301b, the main body C1301c, and the main body D1301d are sequentially adjacent in the width direction. The widths of the main body A1301a, the main body B1301b, the main body C1301c, and the main body D1301d are T1, T2, T3, and T4, respectively, and the width of the first raw roll 1305 is TA (TA = T1 + T2 + T3 + T4). Therefore, the widths (T 1, T 2, T 3, T 4) of the individual original rolls of the first original roll 1305 may be determined in accordance with a predetermined width required for the product. Similarly, the widths of the individual original rolls of the second original roll 1306 may be determined. That is, the width of the main body A1301a, the main body B1301b, the main body C1301c, and the main body D1301d (the width of the main body E1301e, the main body F1301f, the main body G1301g, and the main body H1301h) may be selected. At this time, the widths T1, T2, T3, and T4 may be the same or different.

  Therefore, the widths of a plurality of original fabric rolls (for example, main body A1301a, main body B1301b, main body C1301c, main body D1301d, main body E1301e, main body F1301f, main body G1301g, main body H1301h) can be appropriately selected individually. Therefore, the degree of freedom in design increases, and low-cost core material 5, vacuum heat insulating material 7, and equipment such as a refrigerator can be obtained. Further, since the core material 5 is manufactured by shifting the first original roll 1305 and the second original roll 1306 by a predetermined amount Xb and winding them around the winding frame 1311, it is easy to bend at the slit portion and can be bent. The heat insulating material 7 can be easily manufactured without requiring special processing or the like, and can be easily installed on a heat insulating wall of a device such as a refrigerator having a heat insulating wall that is bent at a predetermined angle. It is possible to increase the coverage ratio of the material, and it is possible to obtain a vacuum insulator and equipment having high performance and low cost.

  As shown in FIG. 13, when the continuous sheet-like fiber assembly 1J is wound around the reel 1311, the first (organic) fiber assembly 1K (first) from the first raw fabric roll 1305 (upper roll) is obtained. 1 (organic) fiber assembly 1Ka to 1Kd, upper organic fiber assembly) and second original fabric roll 1306 (lower roll) and second (organic) fiber assembly 1H (second (organic) The fiber assemblies 1Ha to 1hd, the lower organic fiber assembly) are wound around the reel 1311 in a state of being shifted by a predetermined amount Xb. As shown in FIG. 14, the first (organic) fiber assembly 1 </ b> K and the second (organic) fiber assembly 1 </ b> H in a cross section perpendicular to the winding direction in the state of being wound on the winding frame 1311 are as shown in FIG. 14. The layers are alternately stacked while being shifted by a predetermined amount Xb, and are continuously wound from the inside toward the outside. Therefore, since the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H are shifted by a predetermined amount Xb, the first (organic) fiber assembly 1K (upper organic fiber assembly) ) Of the first slit portion 57 (upper slit portion) and the second slit portion 58 (lower slit portion) of the second (organic) fiber assembly 1H (lower organic fiber assembly) are shifted. This corresponds to the amount Xb, and the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H overlap each other by the amount of Xb. ) The fiber assembly 1K and the second (organic) fiber assembly 1H are difficult to separate.

  Here, the core material 5 in which a plurality of organic fiber aggregates 1 (continuous sheet-like fiber aggregates 1J, first (organic) fiber aggregates 1K, and second (organic) fiber aggregates 1H) are laminated, As the thickness t in the evacuated state (depressurized state) becomes thicker, it becomes more difficult to bend. However, in this embodiment, two slit portions (first slit portions) are separated by a predetermined amount Xb. 57, the second slit portion 58) exists, and it is easy even if the thickness is increased by bending the two slit portions (first slit portion 57, second slit portion 58) in two stages. It becomes possible to bend (to obtain a predetermined bending angle).

  In the present embodiment, the lap allowance Xb is determined according to the thickness of the core material 5. That is, when the thickness of the core material 5 is small, the predetermined amount Xb may be small. However, if the thickness of the core material 5 is increased, it becomes difficult to bend, so the predetermined amount Xb is appropriately increased. Here, if the predetermined amount Xb is too small, the overlapping length (lapping margin) is shortened and frictional force cannot be obtained, and the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H are In this embodiment, the wrap margin Xb is set to 7 mm or more (preferably 10 mm or more). When the lapping margin is 5 mm, the necessary frictional force cannot be obtained because the lapping margin is short, and the individual organic fiber assemblies of the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H The body (first (organic) fiber aggregates 1Ka to 1Kd, second (organic) fiber aggregates 1Ha to 1Hd) was separated from the slit portion, and the core material 5 having a predetermined width was not obtained. . Here, it was found that when the lapping allowance Xb is 10 mm or more, a frictional force can be stably obtained even when an ear is used as the lapping portion, and a decrease in thermal conductivity can be suppressed to a small level.

  Further, the larger the wrap allowance Xb, the greater the required frictional force can be obtained, so the reliability of the core material 5 may be improved. However, the wrap allowance Xb is too large relative to the thickness of the vacuum heat insulating material 7. When the vacuum heat insulating material 7 is bent, the distance (Xb) between the two slit portions at the time of bending increases, the width of the bent portion increases, and it becomes difficult to bend. The thickness is preferably about three times or less of the thickness (for example, when the thickness t of the vacuum heat insulating material is 10 mm, the lapping allowance Xb is preferably about 30 mm or less).

  FIG. 15 is a diagram showing the first embodiment, and is a perspective view of the core material 550 when the core material 550 is manufactured by winding around a winding frame using a combination original fabric roll in which three original fabric rolls are combined. . In FIG. 15, the core material 550 is a first (organic) fiber assembly 1K (from the first raw fabric roll 1305 (upper roll) in the same manner as the core material 5 shown in FIGS. The first (organic) fiber assembly 1Ka, 1Kb, 1Kd) (upper organic fiber assembly) and the second (organic) fiber assembly 1H (first) from the second raw fabric roll 1306 (lower roll) 2 (organic) fiber aggregates 1Ha, 1Hb, 1Hd) (lower organic fiber aggregates) are wound around the reel 1311 while being shifted by a predetermined amount Xb and continuously wound from the inside toward the outside. Are stacked. Then, two places are clamped by the two clamp members 1320 and bent at the clamped portion, and the flat core material 550 is manufactured. However, in FIG. 15, the reference numerals other than those shown in FIG. The vacuum heat insulating material 702 (not shown) is manufactured using the core material 550.

  The core member 550 is composed of two bent portions 551f (folded end portions) bent (folded) by the clamp member 1320 and a flat plate portion 551g (smooth portion) provided between the two bent portions 551f. Composed. Further, the adjacent portions of the first (organic) fiber assemblies 1Ka, 1Kb, and 1Kd of the first (organic) fiber assembly 1K (upper organic fiber assembly) are the first slits shown in FIG. Portion 57 (upper slit portion), and adjacent portions of the second (organic) fiber assemblies 1Ha, 1Hb, 1Hd of the second (organic) fiber assembly 1H (lower organic fiber assembly), It is the 2nd slit part 58 (lower side slit part). The distance (length) in the width direction between the first slit portion 57 and the second slit portion 58 corresponds to the shift amount Xb. Therefore, the first slit portion 57 and the second slit portion 58 can be easily bent.

  Here, the winding end portion 551Je is disposed on the flat plate portion 551g in FIG. 15, but is desirably disposed in the vicinity of the bent portion 551f. If the winding end portion 551Je is disposed on the flat plate portion 551g, a step is likely to occur in the flat plate portion 551g, which is not preferable. Further, when the core member 551 is formed in a flat plate shape by the clamp member 1320, the winding end end portion 551Je is separated from the position of the clamp member 1320. Become. Since the portion of the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H up to the position of the clamp member 1320 and the winding end portion 551Je are not clamped, the core material 550 is separated. Therefore, it is preferable that the winding end portion 551Je is cut so as to be in the vicinity of the bent portion 551f that can be clamped by the clamp member 1320. It is preferable to cut the clamp member 1320 after clamping (preferably immediately after), and it is preferable to cut the flat plate portion 551g in the vicinity of the bent portion 551f. The risk of bending and bending is reduced, and the flat plate portion 551g is unlikely to have a step, the step does not get caught, and the appearance is good.

  FIG. 16 is a diagram illustrating the first embodiment and is a diagram for explaining the configuration of another combination original fabric roll. Here, as shown in FIG. 16, there are three original rolls (main body A1301a) in the first original roll 1305 and the second original roll 1306 which are combined original rolls composed of a plurality of original rolls. In the case of using the main body B1301b and the main body D1301d), an ear raw roll whose one side is an ear may be used for the original rolls (the main body A11301a and the main body D1301d1) on both sides in the width direction. In this case, the ears of the ear part original fabric roll may be arranged so as to face the main body part B11301b side which is the main part raw material roll which is a raw material roll having no ear part arranged in the center.

  In FIG. 16, a first original roll 1305 (upper roll) which is a combined original roll is composed of a main body A1301a, a main body B1301b, and a main body D1301d. They are arranged in the width direction so as to be adjacent in order. That is, a body part B1301b which is a body part original fabric roll which does not have an ear part, and a body part A1301a and body part D1301d which are ear part raw fabric rolls which have ear parts on both sides are arranged at the center in the width direction. And the ear | edge part side of the ear | edge part original fabric roll is arrange | positioned so that it may adjoin the main-body part B1301b side which does not have the ear | edge part arrange | positioned in the center position. Although not shown, the second original roll 1306 (lower roll) that is a combined original roll has the same configuration as the first original roll 1305 (upper roll). That is, a body part F1301f which is a body part raw fabric roll having no ear part, a body part E1301e which is an ear part raw fabric roll having ear parts on both sides thereof, and a body part H1301h are arranged at the center in the width direction. And the ear | edge part side of the ear | edge part original fabric roll is arrange | positioned so that it may adjoin the main-body-part main-body part F1301f side which does not have the ear | edge part arrange | positioned in the center position. Although not shown, the core material 550 is also formed by the raw roll shown in FIG. 16, and the vacuum heat insulating material 702 is manufactured using the core material 550.

  Thus, the ear | edge part of the ear | edge part organic fiber assembly wound by the ear | edge part original fabric roll is not arrange | positioned at the width direction both ends of the 1st original fabric roll 1305 and the 2nd original fabric roll 1306 which are combination rolls. As a result, when the core material 550 is formed by being wound around the winding frame 1311, a cut surface is formed on both sides in the width direction instead of the ears, so both sides in the width direction of the core material 550 are cut. There is no need, and a low-cost vacuum heat insulating material 702 is obtained. At this time, when a main body original fabric roll (main body portion B1301b) that does not have an ear at the center position in the width direction and an ear original fabric roll (ear main body A1301a, main body D1301d) having ears on both sides thereof are arranged. In addition, one of the ear parts of the ear part fabric roll (main body part A1301a, main body part D1301d) is arranged so as to be adjacent to the central part raw material roll (main body part B1301b) side. May be. The ear roll may be arranged so that the ear is only on one side of the combined original roll. In this case, the ear roll is arranged on both sides of the combined original roll. Since only one width direction side needs to be cut, a low-cost vacuum heat insulating material 702 can be obtained. Of course, even in the ear part roll (main part A1301a, main part D1301d) having the ear part, the fiber of the ear part exists in the required thickness and the thickness variation is small, or the end face position ( The edge of the width direction end face is small even if it is used on the width direction end side of the original roll when combined with the ear roll, as long as the variation in the ridgeline is small and there is no problem in heat insulation performance and manufacturing of the core material 550 and the vacuum heat insulating material 702 There is no need to cut.

  Therefore, in the present embodiment, it is not necessary to stack the core materials 550 one by one, and the core material 550 can be manufactured with simple equipment that only winds the fiber assembly IJ. Therefore, the first combination fiber assembly IJ is the first. (Organic) fiber assembly 1K (for example, first (organic) fiber assembly 1Ka to 1Kd) or second (organic) fiber assembly 1H (for example, second (organic) fiber assembly 1Ha to 1Hd Conventionally, it has been discarded in at least one of a plurality of fiber assemblies (for example, first (organic) fiber assemblies 1Ka to 1Kd, second (organic) fiber assemblies 1Ha to 1Hd) Ear part fiber aggregates having ears that are not aligned on the width direction end side (not cut surfaces) (for example, fiber aggregates wound around the main part A1301a and the main part D1301da which are the ear part rolls) ) It can be used for. Therefore, without cutting the ear fiber assembly (fiber assembly wound around the ear raw fabric roll) having the ear portion that has been discarded conventionally, the ear raw fabric roll can be used as it is, There is no waste. Therefore, the low-cost core material 550 and the vacuum heat insulating material 702 are obtained.

  FIG. 17 shows the first embodiment and is a perspective view showing a state in which the vacuum heat insulating material 750 is bent. 17A is a perspective view of a state in which the vacuum heat insulating material 750 is bent, and FIG. 17B is an enlarged view of a main part of a bent portion of the vacuum heat insulating material 750. The vacuum heat insulating material 750 is sealed in a state where the core material 550 is inserted into the outer packaging material 4 having gas barrier properties and the inside is decompressed. The vacuum heat insulating material 750 is bent in two stages at the first slit portion 57 and the second slit portion 58 of the core material 550 to form a bent portion 59. At this time, the bent portion 59 is bent with the width of the lapping allowance Xb. The width of the lapping allowance Xb corresponds to the distance (length) between the first slit portion 57 and the second slit portion 58, and is substantially the same length.

  In addition, the vacuum heat insulating material 750 has the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J shifted in the width direction by a lap allowance Xb and stacked in plural, so that the wrap allowance Xb is shifted. Accordingly, when the first slit portion 57 and the second slit portion 58 are inserted into the outer packaging material 4 and decompressed, the outer packaging material 4 is dented by the first slit portion 57 and the second slit portion 58, respectively. Portions 751 and 752 are formed. In addition, a substantially trapezoidal protruding portion 753 is formed so that the two first slit portions 57 and the second slit portion 58 protrude between the two recessed portions 751 and 752 respectively. The bent portion 59 is formed so that the two first slit portions 57 and the second slit portion 58 are recessed in the recessed portions 751 and 752 and between the two recessed portions 751 and 752. The trapezoidal protrusion 753 can be easily bent by using the slope of the substantially trapezoidal protrusion 753 with the recesses 751 and 752 as a base point. Further, the concave portions 751 and 752 of the first slit portion 57 and the second slit portion 58 and the trapezoidal protrusion 753 formed between the concave portions 751 and 752 are in the thickness direction of the vacuum heat insulating material 750. For example, even when the thickness of the vacuum heat insulating material 750 is increased, the first slit portion 57 and the second slit portion 58 formed on both sides of the sheet surface can be easily bent. Therefore, even if it is bent, the outer packaging material 4 is not torn or damaged, so that the heat insulation performance does not deteriorate. Therefore, the reliability is high, the deterioration of the heat insulation performance can be suppressed, and bending can be performed regardless of the thickness A vacuum heat insulating material with a high degree of freedom of installation is obtained.

  Like this embodiment, it forms in the recessed parts 751 and 752 formed of the some 1st slit part 57 and the 2nd slit part 58, and this 1st slit part 57 and the 2nd slit part 58. In the vacuum heat insulating material 750 provided with the bent portion 59 constituted by the substantially trapezoidal shaped protruding portion 753, the bending confirmation was performed at the thickness t of 5 mm, 7 mm, 10 mm, and 30 mm, but there was no problem. However, when the thickness t of the vacuum heat insulating material 7 is increased (for example, in the case of t = 30 mm), as shown in FIGS. 12 and 13, the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J (first The two (organic) fiber aggregates 1K and the second (organic) fiber aggregates 1H) are overlapped (in FIG. 12, the first (organic) fiber aggregates 1K and the second (organic) fiber aggregates 2 pieces of the body 1H), since there are two slit portions with respect to one bent portion 59, the recessed portions 751 and 752 are also two and difficult to bend. It is better to have three or more slits with respect to the part 59 and three or more recesses due to the slits. The thickness t of the vacuum heat insulating material 750, the material and characteristics of the organic fiber assembly 1, the material of the outer packaging material 4, Select according to the tensile strength.

  As described above, a plurality of organic fiber assemblies 1 and a plurality of continuous sheet-like fiber assemblies 1J (for example, two) are overlapped and shifted in the width direction by a predetermined length (wrap margin Xb) as in the present embodiment. If the core materials 5 and 550 are manufactured by laminating the layers, the number of slits per one bent portion is also equal to the number of the stacked organic fiber assemblies 1 and the continuous sheet-like fiber assemblies 1J (a plurality For example, when three sheets are shifted and overlapped, there can be three slits for one bent portion, so even if the vacuum heat insulating material 750 is thick, slit portions (for example, provided on both sides of the sheet surface) The concave portions 751 and 752 formed by the first slit portion 57 and the second slit portion 58) can be easily folded to both sides of the sheet surface from the folding portion 59.

  Here, when the wrap allowance Xb becomes large, as shown in FIG. 18, thin portions corresponding to the length substantially equal to the wrap allowance Xb are generated at both ends in the width direction of the vacuum heat insulating material 750. FIG. 18 shows the first embodiment, and is a view of the vacuum heat insulating material 750 as seen from the width direction. The vacuum heat insulating material 750 has a predetermined thickness portion 750c having a predetermined thickness t, and a thickness that is about ½ of the predetermined thickness t, and is provided on both sides of the predetermined thickness portion 750c in the width direction. It has thin portions 750a and 750b. Since the thin wall portions 750a and 750b have a heat insulation thickness smaller than that of the predetermined thickness portion 750c, the heat insulation performance is slightly lowered as compared with the predetermined thickness portion 750c. Therefore, since the widths H1 and H2 of the thin portions 750a and 750b (approximately the same length as the length of the wrap allowance Xb) increase as the wrap allowance Xb increases, the wrap allowance should not be too large. That is, the wrap margin Xb is preferably about 7 mm or more and about 30 mm or less when the vacuum heat insulating material 750 is bent and used.

  In addition, when not used by bending, the larger the lap allowance Xb, the greater the frictional force and the higher the reliability. Therefore, the wrap allowance Xb is 7 mm or more, preferably 10 mm or more, and the wrap allowance Xb can be increased. As the length increases, the thin portions 750a and 750b become longer and the portion where the heat insulation performance is slightly lowered becomes larger. Therefore, the lapping allowance Xb is preferably about 30 mm or less. Further, since the wrap margin Xb is also affected by the thickness t of the vacuum heat insulating material 750, it is preferably about 1 to 5 times (preferably 3 times or less) the predetermined thickness t of the vacuum heat insulating material 750. In the present embodiment, the predetermined amount Xb is set to 7 mm or more to prevent the core material 550 from being separated, and the predetermined amount Xb is less than about three times the thickness t of the core material 550 in a substantially vacuum state in the outer packaging material 4. As described above, the bendability is good, and the width of both ends in the width direction of the core material 550 is reduced to suppress the deterioration of the heat insulating performance. Moreover, if the range of the lapping allowance Xb is set by the thickness of the core material 550 at the time of decompression, reliability (the core material 550 is not separated or separated at the slit portion) can be obtained, and it is easy to bend and has a heat insulation performance. Good core material 550 and vacuum heat insulating material 750 are obtained.

  In the present embodiment, the example in which the two slit portions (the first slit portion 57 and the second slit portion 58) are bent in two stages has been shown. If a plurality of combined original fabric rolls are overlapped with a predetermined amount Xb and wound on a reel, a plurality of slit portions exist, so that a plurality of slit portions are present. Since the bending angle at one slit portion can be reduced, it is possible to easily bend the core material 550 and the outer packaging material 4 at a predetermined angle without applying an excessive force when the core material 550 or the outer packaging material 4 is bent. In addition, since it is possible to bend the bent portion 59 in one place in a plurality of stages, the bent portion 59 can be bent at an acute angle and can be applied as a heat insulating material for any device. Accordingly, it is possible to insulate piping such as a condensation pipe of equipment such as a refrigerator and an air conditioner. In addition, since the vacuum heat insulating material of this embodiment is excellent in bending workability, it can be bent and deformed along the shape of the pipe even if heat insulation is performed by sandwiching a pipe such as a condensation pipe between the vacuum heat insulating material and the vacuum heat insulating material. The heat leakage from the gap between the vacuum heat insulating material and the pipe can be suppressed, and the heat insulation performance can be prevented from being lowered.

  That is, in the vacuum heat insulating materials 7, 702 and 750 of the present embodiment, a plurality of continuous sheet-like organic fiber assemblies 1 in the length direction and a plurality of continuous sheet-like fiber assemblies 1J are arranged adjacent to each other in the width direction. The first (organic) fiber assembly 1K and the sheet-like organic fiber assembly that is provided so as to overlap the first (organic) fiber assembly 1K in the vertical direction, the front-rear direction, or the left-right direction. 1. A second (organic) fiber assembly 1H in which a plurality of continuous sheet-like fiber assemblies 1J are arranged adjacent to each other in the width direction, a first (organic) fiber assembly 1K, and a second (organic) fiber A core material constituted by a laminated structure of continuous sheet-like fiber assemblies 1J formed into a flat plate shape by being continuously wound from the inside to the outside in a state where the assembly 1H is shifted by a predetermined amount Xb in the width direction. 5,550 and the core material 5,550 are housed inside, A gas barrier outer packaging material 4 having a sealing portion that is sealed in a state where the portion is decompressed, and sealing the sealing material by sealing the sealing portion with the inside of the outer packaging material 4 in a substantially vacuum state Therefore, the core materials 5 and 550 having a large width can be formed by combining a plurality of continuous sheet-like fiber assemblies 1J having a small width (fiber assemblies wound around the main body portion of the original fabric roll). Further, by selecting appropriately the number of the plurality of organic fiber assemblies 1, the number of continuous sheet-like fiber assemblies 1J, the plurality of organic fiber assemblies 1, and the width of the continuous sheet-like fiber assemblies 1J, a continuous sheet shape Since the width of the core materials 5 and 550 can be freely set without being limited by the width of the fiber assembly 1J, the degree of freedom in designing the core materials 5 and 550 and the vacuum heat insulating materials 7, 702 and 750 is increased. In addition, in order to laminate a plurality of continuous sheet-like fiber assemblies 1J, it is not necessary to cut each sheet into a predetermined size and laminate one by one, so there is no need for cutting equipment or laminating equipment. The core materials 5 and 550 can be easily manufactured in a short time with a simple facility that simply winds the sheet-like fiber assembly 1J in which the core materials 5 and 550 are continuously manufactured.

  Further, the width of the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J (width of the main body portion of the raw fabric roll) can be appropriately selected so that the slit portion (adjacent portion) can be disposed at a site that needs to be bent, In addition, it is possible to appropriately select the lapping margin (predetermined amount Xb) between the first (organic) fiber assembly 1K and the second (organic) fiber assembly 1H, and special processing for bending can be performed. It becomes unnecessary. Further, since the bent portion 59 is formed on both the front and back surfaces with respect to the sheet surface, it can be easily bent in both the front and back directions with respect to the sheet surface using the first slit portion 57 and the second slit portion 58. It becomes.

  Also, connection between adjacent fiber assemblies 1J (main body A1301a, main body B1301b, main body C1301c, main body D1301d) of the first (organic) fiber assembly 1K or the second (organic) fiber assembly 1H. Since it is possible to bend at the portion, there is no need to separately process a concave portion for bending, and the first slit portion 57 and the second slit portion 58 are formed in the process of manufacturing the core material 550. The portions 751 and 752 can be easily bent. Moreover, since the recessed parts 751 and 752 formed by the 1st slit part 57 and the 2nd slit part 58 can be made into the both sides (front and back of a sheet | seat surface) of the thickness direction of the vacuum heat insulating material 750, for example of the core material 550 Even when the thickness is increased, the first slit portion 57 and the second slit portion 58 are formed on both sides of the sheet surface, so that it can be easily bent as compared with the case where it is formed on one side. Therefore, the core material 550 and the outer packaging material 4 are not torn or damaged at the time of bending, and it is possible to suppress a decrease in heat insulation performance.

  Further, if the predetermined amount (wrap allowance) Xb is 7 mm or more and 3 times or less the thickness t of the core material 5 in a substantially vacuum state in the outer packaging material 4, the wrap allowance Xb is 7 mm or more. It is possible to suppress the separation, and it is also possible to prevent the heat insulation performance from decreasing and the heat insulation performance from being lowered. Further, since the wrap margin Xb is set to be not more than three times the thickness t of the core material 5 in a substantially vacuum state in the outer packaging material 4, the bendability at the bent portion 59 can be improved. Therefore, it can be easily applied as a heat insulating material for a device having two wall surfaces that are continuous at a predetermined angle, such as a refrigerator, and a decrease in heat insulating performance can be suppressed.

  Also, a plurality of fiber assemblies 1J (for example, first (organic) fiber assemblies 1Ka to 1Kd, second, which constitute the first (organic) fiber assembly 1K or the second (organic) fiber assembly 1H. In the case of using an ear part fiber assembly having an ear part that is not aligned with a ridge line on the width direction end side (not a cut surface) in at least one of the (organic) fiber assemblies 1Ha to 1Hd), Can use the ear fiber assembly (fiber assembly wound around the ear raw roll) having the discarded ear part, and the material is not wasted. Therefore, the low-cost core material 5,550 and the vacuum heat insulating materials 7,702,750 are obtained.

  Moreover, the refrigerator and the apparatus to which the vacuum heat insulating material of the present embodiment is applied include a vacuum heat insulating material between adjacent fiber assemblies of the first (organic) fiber assembly 1K or the second (organic) fiber assembly 1H. Since it is arranged to be bent at a predetermined angle (for example, approximately 90 degrees) at the connecting portion (slit portion) and disposed on at least two continuous wall surfaces of the heat insulating box having the top surface, both side surfaces, the back surface, and the bottom surface, a vacuum is conventionally used. Since it was difficult to bend the heat insulating material at a necessary predetermined angle, it was difficult to apply the heat insulating material to two continuous wall surfaces. However, if the vacuum heat insulating material 750 of the present embodiment is used, it can be easily bent at a necessary place. Therefore, it can be applied to two continuous wall surfaces having a predetermined angle. Therefore, since the vacuum heat insulating material can be continuously arranged at the corner between two continuous wall surfaces having a predetermined angle, the vacuum heat insulation with respect to the outer surface area of the box (outer box) excluding the door of a device such as a refrigerator. The coverage of the material can be greatly improved. For example, in the case of a refrigerator, a coverage of 80% or more with respect to the outer box surface area, which has been difficult in the past, is possible.

(Manufacturing method 4 of a core material)
As described above, the sheet-like fiber assembly 1 is cut into a predetermined size and laminated to form a core material 5 to produce the vacuum heat insulating material 7, or a plurality of sheet-like fiber assemblies 1 are laminated. After that, the end face 5a is cut and formed into a predetermined size to form the core material 5 to manufacture the vacuum heat insulating material 7 (core material manufacturing method 1), or a continuous sheet-like fiber assembly 1J ( For example, a method of manufacturing the core material 5 by continuously winding the organic fiber aggregate) into a coil shape (core material manufacturing method 2), or combining a plurality of raw fabric rolls in the width direction has one large width. A method of manufacturing core materials 5 and 550 by combining a plurality of combined original fabric rolls (for example, combined original fabric rolls 1305 and 1306) and stacking them in a substantially perpendicular direction to the sheet surface (Manufacturing method 3 of the core material) ) Explained.

  In the core material manufacturing method 3 described above, a plurality of original fabric rolls are arranged in the width direction and a first original fabric roll (upper original fabric roll) 1305 which is a combined original fabric roll having one predetermined width, and a plurality of original fabric rolls A plurality of original fabric rolls arranged in the width direction and used as a second original fabric roll (lower original fabric roll) 1306, which is a combined original fabric roll having one predetermined width, and at least one by one, the first original fabric roll 1305 of the fiber assembly 1K and the fiber assembly 1H of the second raw fabric roll 1306 are overlapped in a substantially right angle direction (radial direction of the winding frame 1311) with respect to the sheet surface and wound around the winding frame 1311 to wrap the core material 5. Although the manufacturing method has been described, a third original roll 1307 that is a single original roll having a first predetermined width is used instead of the second original roll 1306 that is a combined original roll. use If it will be described.

  That is, a first sheet having a first predetermined width obtained by continuously winding a continuous sheet-like fiber assembly 1, 1 J (for example, an organic fiber assembly) having a predetermined width in at least one original fabric roll in a coil shape. The fiber assemblies 1 and 1J of the 3 original fabric rolls 1307 and a continuous sheet-like fiber assembly having a width smaller than the first predetermined width are combined in the width direction to obtain a first predetermined width. The first original fabric roll 1305 is wound around the third original fabric roll 1307 in a state where the fiber assembly 1K of the first original fabric roll 1305, which is a combined original fabric roll, is superimposed on the sheet surface in a substantially perpendicular direction. A method for manufacturing the core material 560 by winding the frame 1311 so as to be on the outer side in the radial direction will be described with reference to FIGS.

  FIG. 20 shows a combination of at least one original fabric roll 1307 having a first predetermined width and an original fabric roll having a width smaller than the first predetermined width in the width direction so as to be substantially equal to the first predetermined width. FIG. 9 is a schematic diagram of a winding device when winding around a winding frame 1311 using at least one combination original fabric roll 1305, and is a diagram illustrating another core material manufacturing method of the present embodiment. FIG. 21 is a perspective view of a core material manufactured by winding on a reel using at least one original fabric roll 1307 having a predetermined width and at least one combined original fabric roll. FIG. 22 is a cross-sectional view of a core material manufactured by winding on a reel using at least one original roll having a predetermined width and at least one combined original roll, and FIG. 23 shows at least one predetermined width. It is a perspective view of the vacuum heat insulating material using the core material manufactured by winding and winding on the winding frame using the original fabric roll which has, and at least 1 combination original fabric roll.

  Coil a sheet-like fiber assembly 1, 1J (for example, an organic fiber assembly) in which at least one of the plurality of original fabric rolls is continuous in the length direction having the first predetermined width. A first raw roll 1307 having a first predetermined width wound in a shape and a fiber assembly continuous in a length direction having a second predetermined width smaller than the first predetermined width are the first predetermined At least one combined original fabric roll (for example, a combination of only two original fabric rolls having a second predetermined width that is smaller than the first predetermined width) or a second A first raw roll 1305 that is a combination of a raw roll with a predetermined width and a third raw roll with a width smaller than the second predetermined width, or a combination with an ear original roll. And fiber assembly 1, 1J, 1 About the case where the core material 560 is manufactured by winding the fiber aggregates 1 and 1J of the third original fabric roll 1307 so as to be inward in the radial direction of the winding frame 1311 in a direction substantially perpendicular to the sheet surface of K. explain.

  In the drawing, the first original fabric roll 1301 is equivalent to the first original fabric roll 1305 (or the second original fabric roll 1306) explained in FIG. Is omitted, but a plurality of substantially cylindrical (or coiled) raw rolls (for example, a main body A1301a, a main body B1301b, a main body C1301c, and a main body) wound by approximately the same number of windings (same number of layers). D1301d) may be combined to have a gap in the width direction (adjacent to form a minute gap, may be arranged without a gap, or may be arranged via a spacer to provide a predetermined gap). It is formed to have a width substantially equal to the predetermined width of 1.

  The third original fabric roll 1307 is a substantially cylindrical original fabric roll 1301 having a predetermined width around which the fiber assemblies 1 and 1J having a predetermined width described in FIGS. 6 to 9 are wound. The same parts are denoted by the same reference numerals, and detailed description thereof is omitted. The third original fabric roll 1307 has a first predetermined width and is formed such that the fiber assemblies 1 and 1J continuous in the length direction are continuously wound in a coil shape and have the first predetermined width. Has been. Here, the fiber aggregates 1 and 1J wound around the third raw fabric roll 1307 are continuous in the width direction and set to the same dimensions as the width H of the core material 560. Here, the third original fabric roll 1307 may be manufactured by winding the first fiber assembly 1 and 1J having a predetermined width, or a fiber assembly having a width larger than the first predetermined width. You may manufacture by cutting a width direction so that a width dimension may turn into a 1st predetermined width after winding in a substantially cylindrical shape.

  Here, a plurality of substantially cylindrical (or coil-shaped) original fabric rolls (for example, a main body portion A1301a, a main body portion B1301b, a main body portion C1301c, and a main body portion D1301d) of the first original fabric roll 1305 have the same width. Or different widths. Moreover, an ear | edge original fabric roll as shown in FIG. 12 may be sufficient.

  As shown in FIG. 12, the first original fabric roll 1305 has the same structure as the first original fabric roll 1301, and is arranged in the width direction so that a plurality of original fabric rolls (for example, a plurality of main body portions) are adjacent to each other. Because of the combined original fabric roll, there is a minute gap or a predetermined gap between adjacent main body parts (for example, between the main body part A (1301a) and the main body part B (1301b)). The slit portions (for example, the slit portion A between the main body portion A1301a and the main body portion B1301b, the slit portion B between the main body portion B1301b and the main body portion C1301c, the main body portion C1301c and the main body portion D1301d) are not continuous. There is a slit portion C between them. Further, the third original roll 1307 is a predetermined width of the original roll material applied to the original roll (for example, the main body A1301a or the main body D1301d) arranged on the end side in the width direction among the plurality of original rolls. An ear part raw roll having an ear part that is not aligned with the ridge line generated when it is cut into two pieces may be used.

  Therefore, a single raw roll (for example, a third roll) having a first predetermined width and a width substantially equal to at least one first predetermined width around which a sheet-like fiber assembly continuous in the length direction is wound. A plurality of sheet-like fiber assemblies having a width smaller than the first predetermined width and the original fabric roll 1307 are continuously arranged in the length direction so as to have a width substantially equal to the first predetermined width. A plurality of combined original fabric rolls (for example, a first original fabric roll 1305) combined in the width direction as described above, and a fiber assembly 1 of a single original fabric roll 1307 having a first predetermined width, 1J and the fiber assembly 1K of the combination fabric roll 1305 are stacked so that the fiber assembly 1 and 1J of the single fabric roll 1307 are radially inward of the winding frame 1311 in a direction substantially perpendicular to the sheet surface. Coil from inside to outside in a state Wound into a core material 560 is formed.

Therefore, the core material 560 can be easily manufactured simply by stacking and winding the continuous fiber aggregates 1, 1 </ b> J, and 1 </ b> K in a substantially right angle direction on the sheet surface. Can be used effectively, and the core material 560 and the vacuum heat insulating material 760 that do not waste at low cost can be obtained.

  A sheet-like third fiber assembly having the first predetermined width and continuous in the length direction (fiber assemblies 1 and 1J wound around the third original fabric roll 1307), and the first predetermined width A first fiber aggregate in which a plurality of sheet-like fiber aggregates having a smaller width and continuous in the length direction are arranged with a predetermined gap in the width direction so as to be substantially the same width as the first predetermined width (The fiber assembly 1K of the first original fabric roll 1305 which is a combined original fabric roll), and the first fiber assembly and the third fiber assembly are the first fiber assembly 1K or the third fiber assembly. Constructed from a laminated structure of fiber assemblies that are continuously wound from the inside to the outside in a state of being stacked in a substantially perpendicular direction to the sheet surfaces of the bodies 1 and 1J and formed into a flat plate shape. A core material and a seal that seals the surroundings in a state where the core material is housed inside and the inside is decompressed Gas barrier outer packaging material and a vacuum heat insulating material manufactured by sealing the outer packaging material by sealing the sealing portion with the inside of the outer packaging material in a substantially vacuum state, so the raw roll is cut to a predetermined width Since the remaining end material such as the ear part roll can be efficiently used, the end material such as the ear part, which has been conventionally discarded, can be effectively used.

  Moreover, between each original fabric roll of the 1st original fabric roll 1305 which is a combination original fabric roll (For example, between main-body part A and main-body part B, between main-body part B and main-body part C, main-body part C, and A spacer having a predetermined width is provided between the main body portion D and the like, and between the individual fiber assemblies of the fiber assembly 1K of the first raw fabric roll 1305 (for example, between the fiber assemblies 1Ka and 1Kb, 1 Kb and Since a predetermined clearance corresponding to the width of the spacer is set between 1 Kc and between 1 Kc and 1 Kd), a recess having a substantially predetermined width is formed in the vacuum heat insulating material 560, and piping is provided in this recess. It is possible to embed or position the pipe, to reduce the heat insulation time of the pipe and the work time for installing the pipe, and to obtain a highly efficient and low cost vacuum heat insulating material and equipment.

  Here, as shown in FIG. 20, the first (organic) fiber assembly 1K (first (organic) fiber assembly 1Ka, 1Kb, 1Kc, 1Kd) of the first roll roll 1305 which is a combination roll, When the third fiber aggregates 1 and 1J of the third original fabric roll 1307 are stacked in a substantially perpendicular direction to the sheet surface and wound on the winding frame 1311, the first ( (Organic) fiber assembly 1K (first (organic) fiber assembly 1Ka, 1Kb, 1Kc, 1Kd) with respect to the rotating shaft 1315 of the reel 1311 rather than the fiber assembly 1, 1J of the third original fabric roll 1307 It is better to overlap so that it is radially outward.

  As shown in FIG. 9 (e), a sheet-like third fiber assembly 1, 1J continuous to the winding frame 1311 and a sheet-like first (organic) fiber assembly 1K (first (organic) The fiber assemblies 1Ka, 1Kb, 1Kc, and 1Kd) are wound around the winding frame 1311 in a substantially cylindrical shape (coiled shape) with a predetermined tension, and the substantially cylindrical fiber assemblies 1, 1J are formed by the clamp member 1320. , 1K, when the tension is loosened and the reel 1311 is pulled out, the fourth fiber assembly having the first predetermined width without any breaks in the width direction is made adjacent to the plurality of fiber assemblies in the width direction. As a result, the third fiber assembly is placed on the innermost peripheral side of the substantially cylindrical fiber assembly rather than the first fiber assembly in which there are cuts and gaps in the width direction. Radial direction of the reel 1311 rather than the assembly When the substantially cylindrical fiber assembly is pulled out from the winding frame 1311, the fiber assembly is scattered on the innermost peripheral side and is distorted. Or it won't get caught in the reel.

  That is, when winding the first fiber assembly and the third fiber assembly in an overlapped state, the winding is performed in a state where the third fiber assembly is overlapped with the first fiber assembly. Since the frame 1311 is wound from the inner side toward the outer side, when the substantially cylindrical fiber assembly wound around the winding frame 1311 is extracted from the winding frame 1311, it has a first predetermined width, and the width direction Since the third fiber assemblies 1, 1J that are continuous to each other are arranged at the innermost side of the substantially cylindrical fiber assembly, the fiber assemblies arranged at the innermost side are continuous in the width direction. Compared with the case where the first fiber assembly in which a plurality of fiber assemblies having a width smaller than the first predetermined width arranged in the width direction is combined on the innermost side, the fiber assembly is scattered and disturbed. When the disturbed fiber assembly is extracted from the reel 1311, the reel 1311 Since not caught preparation of extraction tends core 560 is easy can be shortened and production time improves workability. Further, the quality of the core material 560 manufactured by forming the substantially cylindrical fiber assemblies 1, 1J, 1K extracted from the winding frame 1311 into a flat plate shape is stabilized.

  Here, the width of the plurality of original rolls used for the first original roll 1305 and the number to be used (four main body parts A1301a, B1301b, main body part C1301c, and main body part D1301d) are the first. May be appropriately set so as to be substantially equal to the first predetermined width of the fiber assemblies 1 and 1J of the third raw fabric roll 1307 having the predetermined width, but the first when a plurality of them are arranged in the width direction. The width of the original roll 1305 (the total width including the gaps between the plural original rolls and the original roll) is set to be slightly smaller than the first predetermined width of the third original roll 1305 Is the fiber assembly 1K wound around the first original fabric roll 1305 and the fiber assemblies 1 and 1J wound around the third original fabric roll 1307. Sheet than fiber aggregate 1,1J of raw roll Substantially better to wound the lap winding frame 1311 so as to be perpendicular outwardly, easy winding less likely to break apart the individual fiber aggregate even when wound on the winding 1311 with respect to.

  Further, the first original roll 1305 and the third original roll 1307 are each made of a reel 1K of the first original roll 1305 than the fiber aggregates 1 and 1J of the third original roll 1307. In the case of winding up to 1311, the sheet is wound up so as to be outside in the direction substantially perpendicular to the sheet surface, but the manufacturing method of the vacuum heat insulating material 560 is the same as FIG. 9. 9, instead of one original roll 1301 wound around the winding frame 1311, at least two original rolls (for example, the first roll shown in FIGS. 12 to 18) stacked in a direction substantially perpendicular to the sheet surface. In the case where the first original roll 1305 and the second original roll 1306 are overlapped, or in the case where the first original roll 1305 and the third original roll 1307 shown in FIGS. Even if it is a combination, the winding method, the core material manufacturing method, the vacuum heat insulating material manufacturing method, and the like are equivalent to the steps shown in FIG.

  As described above, the single original fabric roll (for example, the third original fabric roll 1307) and the first in the at least one width direction in which the fiber assembly having the first predetermined width and continuous in the length direction are wound. The width is such that a plurality of raw rolls each having a width smaller than a predetermined width of 1 and wound with continuous fiber assemblies are arranged in the width direction to have a width substantially equal to the first predetermined width. A plurality of combined original fabric rolls (for example, a first original fabric roll 1305) combined in a plurality of directions. Since it can be used, it is no longer necessary to dispose of scraps that have been disposed of in the past, and a core material and a vacuum heat insulating material can be produced efficiently at low cost.

  Further, a plurality of fiber assemblies 1K of a single raw roll 1307 and a combination of fiber rolls 1305 of a combination original roll 1305 are stacked in a direction substantially perpendicular to the sheet surface, and a predetermined shape is provided on a substantially cylindrical winding frame 1311. The core material 560 is manufactured by winding the fiber assembly from the inside to the outside with the tension of, and then clamping the substantially cylindrical fiber assembly with the clamp member 1320 and then removing the tension from the winding frame 1311. The core material can be easily manufactured with simple equipment.

  FIG. 21 shows a perspective view of the core material 560 manufactured as described above. In FIG. 21, the first (organic) fiber assembly 1K (for example, 1Ka, 1Kb, 1Kc, 1Kd, 1Ke) and the third original fabric roller 1307 (lower side) of the first original fabric roll 1305 (upper side roll). The third fiber assembly 1, 1J (lower fiber assembly) of the roll) is wound around the winding frame 1311 in a state where five original rolls are arranged in the width direction through a predetermined gap XK, and from the inside. It is continuously wound and laminated toward the outside. In the core material 560, a first fiber assembly that is a combined fiber assembly aggregate is overlapped on the outside of a single third fiber assembly in a direction substantially perpendicular to the sheet surface of the fiber assemblies 1 and 1J. Therefore, a plurality of first (organic) fiber assemblies 1Ka, 1Kb, 1Kc, 1Kd, 1Ke constituting the first fiber assembly which is a combined fiber assembly are formed on the outer surface of the core material 560. Are arranged side by side through a gap (a minute gap or a predetermined gap) in the width direction.

  Here, the width of the third fiber aggregates 1 and 1J may be substantially equal to the width of the first fiber aggregate 1K, but the width of the third fiber aggregates 1 and 1J as shown in FIG. Is made larger than the width of the first fiber assembly 1K, and the first gap is obtained by a length XT (for example, XTa or XTe) on the outer side in the width direction of the first fiber assembly 1K. You may arrange | position the fiber assembly 1K. When arranged in this way, at least one end side in the width direction of the third fiber assemblies 1 and 1J does not have the first fiber assembly 1K in the portion of the length XT, so in the portion of the length XT There is only the third fiber assembly 1, 1J.

  Therefore, when the first fiber assembly 1K and the third fiber assemblies 1, 1J are overlapped and wound from the inside to the outside and formed into a flat plate shape, at least one portion of the length XT on the width direction end side The core material 560 without the first fiber assembly 1K is manufactured. Therefore, the first fiber aggregate 1K and the third fiber aggregates 1 and 1J are overlapped and wound from the inside to the outside, and the core material formed into a flat plate shape is inserted into the outer packaging material 4 and the outer packaging material is decompressed. When the vacuum heat insulating material 760 is manufactured by sealing 4, the vacuum heat insulating material 760 has thin portions H <b> 1 and H <b> 2 on the width direction end side similarly to the vacuum heat insulating material 750 shown in FIG. 19. In this case, the length of the thin portion H1 is substantially equivalent to XTa, the length of the thin portion H2 is substantially equivalent to XTe, and the width H3 of the central portion is substantially equivalent to the width of the first fiber assembly 1K. Become. The thin portions may be provided on both ends in the width direction of the vacuum heat insulating material 760, but may be provided on at least one end in the width direction.

  In other words, the first fiber assemblies 1K are arranged at both ends in the width direction of a plurality of fiber assemblies (1Ka, 1Kb, 1Kc, 1Kd, 1Ke) adjacent to each other with a predetermined gap XK in the width direction. XT between the width direction end side fiber assemblies 1Ka and 1Ke and the end portions in the width direction of the third fiber assemblies 1 and 1J (for example, in FIG. 43, the third fiber assemblies 1 and 1J Among the two width direction end portions, one width direction end portion and one end in the width direction end portion side of the third fiber assembly 1, 1J of the fiber assembly 1Ka which is the width direction end side fiber assembly. Length XTa or the other width direction end of the third fiber assembly 1, 1 J and the other of the third fiber assembly 1, 1 J of the fiber assembly 1 Ke which is the width direction end side fiber assembly At least the third fiber assembly 1 by the length XTe) with the end on the width direction end side. Since the width of J becomes larger than the width of the first fiber assembly 1K, the thin-walled portion H1 (or H2) is obtained at least on one end side in the width direction in the vacuum heat insulating material 760 similarly to the vacuum heat insulating material 750. .

  That is, the vacuum heat insulating materials 750 and 760 have a predetermined thickness t in a state where the core materials 550 and 560 are reduced in pressure in the outer packaging material 4 and sealed, and the width direction of the end portions in the width direction of the core materials 550 and 560 Is a thin stepped shape (thin wall portion H1 or H2) protruding outward in the width direction.

  As described above, the vacuum heat insulating materials 750 and 760 have the thickness of the vacuum heat insulating materials 750 and 760 on one end side in the width direction or both end sides in the width direction of the core materials 550 and 560 without special processing. Since thin portions (H1 and H2 in FIG. 19) having a thickness smaller than (the thickness t of the core materials 5, 550, 560) are obtained, when one vacuum heat insulating material 750, 760 is bent into a cylindrical shape, etc. When the end surfaces in the width direction (thin parts (H1 and H2)) are overlapped in the thickness direction and the vacuum heat insulating materials 750 and 760 are connected and used, or two or more vacuum heat insulating materials 750 and 760 When the end surfaces (thin portions) in the width direction are continuously stacked and used in the thickness direction, the surfaces in the thickness direction of the thin portions of the end surfaces in the width direction of the plurality of vacuum heat insulating materials 750 and 760 contact each other. If it is made to overlap like this, the core material 55 , 560, and a thin portion with a small thickness (the thickness is approximately half when one sheet is shifted in two layers) It is possible to reduce the thickness, reduce heat leakage from the contact portion, and obtain devices such as compressors, refrigerators, and water heaters equipped with high-performance vacuum heat insulating materials 750, 760 and vacuum heat insulating materials 750, 760. .

  Moreover, the cross-sectional shape in the cross section substantially perpendicular to the width direction of the end surface in the length direction of the plurality of vacuum heat insulating materials 7, 700, 701, 750, and 760 protrudes to the outside in the thickness direction. Since it is substantially triangular, if it is connected so that the substantially triangular slope portions (slope portions of length L2 in FIG. 11) are in contact with each other, they can be brought into contact at the portions where the core members 550 and 560 exist, Moreover, the junction thickness of the contact portion can be reduced, and heat leakage from the contact portion can be reduced, and high performance vacuum heat insulating materials 7,700,701,750,760, vacuum heat insulating materials 7,700,701,750,760. Equipment such as a refrigerator equipped with can be obtained.

  Here, regarding the shape of the end portion in the length direction, the fiber aggregates 1 and 1J may not be continuous in the length direction, and if the fiber aggregates are laminated in a substantially triangular cross-sectional shape, good. That is, the vacuum insulating materials 7,700,701 having a predetermined length L, a predetermined width H, and a predetermined thickness t are sealed in a state where the core materials 5,550,560 are decompressed inside the outer packaging material 4. , 750, 760, the core material 5, 550, 560 has a laminated structure of fiber assemblies 1, 1J, and the cross section of at least a part of the end in the length direction or the width direction has a thickness toward the outside. What is necessary is just the substantially triangular shape which protruded to the outer side which becomes small. Further, the core materials 5, 550, 560 have a laminated structure in which sheet-like fiber assemblies 1, 1J having a predetermined width H and continuous in the length direction are continuously wound from the inside to the outside. The same effect can be obtained if the lengthwise ends of the core materials 5, 550, 560 are substantially triangular with the core materials 5, 550, 560 sealed in the outer packaging material 4.

  Further, in the thin-walled shape in the width direction (thin protruding shape), the fiber assemblies 1 and 1J may not be continuous in the length direction, and a plurality of fiber assemblies having a length L may be stacked. . That is, the vacuum insulating materials 7,700,701 having a predetermined length L, a predetermined width H, and a predetermined thickness t are sealed in a state where the core materials 5,550,560 are decompressed inside the outer packaging material 4. , 750, and 760, the thin-walled portions 750a and 750b may be provided at the ends in either the length direction or the width direction, and the thin-walled portions 750a and 750b may protrude outward. The core members 5, 550 and 560 have a laminated structure in which a plurality of sheet-like fiber assemblies 1 and 1J having a predetermined width H are stacked in a stacked state, and the thin portion 750a has a plurality of fiber assemblies. The same effect can be obtained if at least one of 1, 1J is formed by stacking a plurality of layers with a predetermined amount shifted in the width direction.

  As described above, the vacuum heat insulating materials 750 and 760 of the present embodiment have a flat plate shape having a predetermined thickness, and the cross-sectional shape of one end (for example, the length direction) of the flat plate shape has a thickness toward the outside. Since it has a substantially triangular shape that protrudes to the outside, or a step shape having a thin portion with a thin cross-sectional shape at the end in the other direction (for example, the width direction), the core members 550 and 560 are wound in an overlapping manner. It can be easily manufactured by only a simple method, and the end material can be used effectively.

In addition, the shape of the end can be connected without special processing in the length and width directions, so if the end is in contact, the contact thickness can be reduced and the contact can be reduced. Heat leakage from the portion can be reduced, and devices such as compressors, refrigerators, and water heaters equipped with high-performance vacuum heat insulating materials 750, 760 and vacuum heat insulating materials 750, 760 can be obtained.

  Here, the core material 560 is in the opposite direction (separated) between the two clamp members 1320 in a state where the two clamp members 1320 are clamped at two locations in the same manner as the core material 5 and the core material 550 shown in FIG. In order to move in the direction), the fiber assembly is bent at the clamped portion and folded (bent) at the bent end portion 560f to produce a flat plate shape. The core material 560 folded at the bent end portion 560f, which is the end portion in the length direction of the core material 560, is the upstream side in the winding direction of the fiber aggregates 1, 1J, and 1K in the same manner as the core material 5 shown in FIG. The vacuum heat insulating material 760 is completed by being inserted into the opening 4a of the outer packaging material 4 from the 560fa side and sealed in a state where the inside is decompressed.

  FIG. 22 shows the cross-sectional shape in the width direction of the core material 560 folded into a flat plate shape. The core material 560 is continuous in the length direction from the inside to the outside, and is also continuous in the width direction. A plurality of first (organic) fiber assemblies 1K that are continuous with the single fiber assembly 1, 1J in the length direction and are divided into a plurality of portions in the width direction overlap with the sheet surface in a substantially perpendicular direction. In this state, it is continuously wound up and folded into a flat plate shape. Then, the single fiber aggregates 1 and 1J that are continuous in the width direction are overlapped so as to be inside the first (organic) fiber aggregate 1K in which a plurality of fiber aggregates are arranged in the width direction. Since the first (organic) fiber assembly 1K (first (organic) fiber assembly 1Ka, 1Kb, 1Kc, 1Kd, 1Ke) is wound in a coil shape from the inside, the outer surface of the core 560 Wrapped to come. At this time, a predetermined gap XK is set between the individual first (organic) fiber assemblies 1Ka, 1Kb, 1Kc, 1Kd, 1Ke of the first (organic) fiber assembly 1K, and the slit portion 560K ( A third slit portion) is formed. The predetermined gaps XK are individual predetermined gaps XKab, XKbc, XKcd, XKde, and the individual predetermined gaps XKab, XKbc, XKcd, XKde may be the same or different.

  FIG. 23 shows the vacuum heat insulating material 760 in which the core material 560 is inserted into the outer packaging material 4 and the opening 4a of the outer packaging material 4 is sealed and sealed in a state where the inside is decompressed. The vacuum heat insulating material 760 includes a recessed portion 760x (a groove portion, for example, a first recessed portion 760x1 and a second recessed portion 760x2) having a width substantially equal to a predetermined clearance XK provided in the core material 560 in the width direction. , Third recess 760x3, and fourth recess 760x4) are provided in the width direction continuously in the length direction. Here, the width of the first dent portion 760x1, the second dent portion 760x2, the third dent portion 760x3, and the fourth dent portion 760x4 may be the same or different, and may be set as appropriate depending on the size of the pipe. It ’s fine.

  Here, since the predetermined clearance XK is continuous in the winding direction (length direction) of the core material 560, if the vacuum heat insulating material 760 is manufactured using the core material 560, the predetermined clearance XK has a width substantially equal to the predetermined clearance XK. Concave portions 560X (groove portions) that are continuous in the length direction and have a depth that is approximately ¼ of the thickness of the vacuum heat insulating material 760 are both sides of the flat plate surface of the flat plate-like vacuum heat insulating material 760 (the concave depths of the concave portions on both sides). The depth is about half (about 1/2) the thickness of the vacuum heat insulating material 760), so that piping (for example, a condensation pipe, a suction pipe, a discharge pipe, etc.), a lead wire, etc. in this recess By arranging at least a part of the above, it is possible to easily insulate the pipe and store the lead wire without using a separate member. Further, since positioning of the pipes and lead wires can be performed at the same time simply by disposing them in the recessed portion 760x, a separate member for positioning is unnecessary, and workability is greatly improved. In addition, it is possible to bend easily from the recessed portion 760x without providing a recessed portion for bending by laser processing or the like.

  As described above, the vacuum heat insulating material manufacturing apparatus according to the present invention includes an organic fiber assembly 1 having a predetermined width wound around a substantially cylindrical raw fabric roll 1301 cut to a predetermined width, a continuous sheet. A winding frame 1311 for winding the fiber-like fiber assembly 1J for a predetermined number of times R, an organic fiber assembly 1 wound around the winding frame 1311, a cutting means for cutting the continuous sheet-like fiber assembly 1J, and a winding frame 1311 The organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J, which have been wound and cut by a predetermined number of times R, are extracted from the winding frame 1311, and then the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J are obtained. Since the molding member (for example, the clamp member 1320) to be molded into the flat core material 5,550,560 is provided, the core material 5,550,560 can be easily manufactured with a simple configuration. Between it can also be shortened. In addition, since it is continuously wound in the winding direction, there is no need to cut the end face in the length direction, and since it is not necessary to cut since the raw roll is also cut in the width direction, the core materials 5,550, There is no need to cut 560. In addition, the manufacturing equipment for cutting the end faces of the core materials 5,550,560 is unnecessary, and the time for cutting is also unnecessary, so that the manufacturing equipment can be made inexpensive, and the low cost core materials 5,550,560, Vacuum heat insulating materials 7,702,750,760 are obtained. Moreover, the core material 5,550,560 with a large width | variety can be manufactured by combining several main-body parts (fiber assembly) of a raw fabric roll with a small width | variety. Further, by appropriately selecting the number of the plurality of original fabric rolls and the width of the plurality of original fabric rolls, the width of the core materials 5, 550, 560 can be freely set without being restricted by the width of the original fabric roll. The degree of freedom in designing the materials 5, 550 and 560 is increased. Moreover, since the core material 5,550,560 with a large width | variety can be manufactured from a raw fabric roll with a small width | variety, the storage place of an original fabric roll can be small, and a big storage place is not required. Further, in order to stack a plurality of fiber assemblies, it is not necessary to cut each sheet into a predetermined size, and it is not necessary to stack one by one. Compared to the case where the core material is formed by stacking continuous belt-like sheet-like members alternately in different directions and creased to overlap, a device for turning back with an expensive crease is unnecessary. It is. Therefore, a lamination facility or the like is unnecessary, and the core materials 5 and 550 can be easily manufactured in a short time with a simple facility for winding the sheet-like fiber assembly 1J in which the core materials 5 and 550 are continuously manufactured.

  Moreover, the manufacturing apparatus of the vacuum heat insulating materials 7, 702, 750, and 760 of the present invention includes the circumferential member 1312 in which the winding frame 1311 is divided into a plurality of parts, and at least one of the circumferential members 1312 (for example, movable) The possible circumferential members 1312a and 1312b) are movable in the direction of the rotation center (rotating shaft 1315), and are movable after the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J are wound around the winding frame 1311. The peripheral members 1312a and 1312b are operated in the rotation center direction to loosen the tension of the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J, and the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J are wound into the winding frame 1311. Therefore, the tension of the continuous sheet-like fiber assembly 1J that has been wound around the winding frame 1311 with a predetermined tension, for example, in a substantially cylindrical shape, is loosened. From it may extract the continuous sheet-shaped fiber assembly 1J wound in a substantially cylindrical shape to facilitate the bobbin 1311. That is, the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is released from the reel 1311 by loosening the tension of the continuous sheet-like fiber assembly 1J wound around the winding frame 1311 with a predetermined tension. It becomes easy to extract.

  Moreover, the manufacturing apparatus of the vacuum heat insulating material 7,702,750,760 of this invention clamps with the clamp member 1320, when extracting the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J from the winding frame 1311. Since the extraction is performed, the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J can be easily extracted from the winding frame 1311 with a simple configuration. Further, the two clamp members 1320c and 1320d are moved in the direction substantially opposite to the linear direction while the continuous sheet-like fiber assembly 1J is clamped at two locations using the two clamp members 1320 (clamp members 1320c and 1320d). If it is moved or moved in a direction (approximately 180 degrees opposite), the continuous sheet-like fiber assembly 1J that is wound a plurality of times and stacked in layers is pulled in the opposite direction by the two clamp members 1320c and 1320d. Since it is formed in a flat plate shape that is bent from the clamped portion, the continuous sheet-like fiber assembly 1J is continuously wound from the inner side toward the outer side to form a flat core material 5,550, 560 can be easily molded with simple equipment.

  Moreover, according to the manufacturing method of the vacuum heat insulating material 7,702,750,760 of this invention, the continuous sheet form which has the predetermined | prescribed width wound around the substantially cylindrical raw fabric roll 1301 cut by the predetermined | prescribed width | variety. A winding step of winding the fiber assembly 1J around the reel 1311 a predetermined number of times R, a cutting step of cutting the continuous sheet-like fiber assembly 1J wound around the reel 1311, and a predetermined number of times on the reel 1311 A separation step of extracting the continuous sheet-shaped fiber assembly 1J wound and cut by R by the winding frame 1311 and a continuous sheet-shaped fiber assembly 1J extracted from the winding frame 1311 in the separation step by a flat plate shape In the state where the core material 5,550,560 is housed in the outer packaging material 4 having a gas barrier property and the inside is decompressed, the molding step for forming the core material 5,550,560 And outer cover material sealing step of Lumpur, since with a can be produced in a short time the core 5,550,560 in a simple manner. In addition, since it is continuously wound in the winding direction, there is no need to cut the end face in the length direction, and since it is not necessary to cut since the raw roll is also cut in the width direction, the core materials 5,550, There is no need to cut 560. Therefore, manufacturing equipment for cutting the end surfaces of the core materials 5, 550 and 560 is not required, and the time for cutting is also unnecessary, so that the core materials 5, 550, 560 and the vacuum heat insulating materials 7, 702 are inexpensive. 750, 760 are obtained.

  Moreover, according to the manufacturing method of the vacuum heat insulating materials 7,702,750,760 of the present invention, the separation step is a continuous sheet-like fiber assembly 1J that is wound around the winding frame 1311 a predetermined number of times R and cut. A clamp step for clamping the wire with a clamp member, a fiber assembly tension relaxation step for releasing tension on the winding frame 1311 of the continuous sheet-like fiber assembly 1J clamped at the clamp step, and a tension relaxation at the tension relaxation step The continuous sheet-shaped fiber assembly 1J is extracted from the winding frame 1311, and the continuous frame-shaped fiber assembly 1J is extracted from the winding frame 1311. Therefore, the continuous sheet-shaped fiber assembly 1J can be easily extracted from the winding frame 1311 by a simple method. Can do.

  Moreover, according to the manufacturing method of the vacuum heat insulating materials 7,702,750,760 of the present invention, the sheet-like fiber assembly 1J in which the forming step is continuous using two clamp members 1320 (clamp members 1320c, 1320d). The two clamp members (clamp members 1320c and 1320d) are moved in substantially opposite directions to form the core material into a flat plate shape, so that a simple method using only the clamp member 1320 is possible. Thus, the sheet-like core materials 550 and 560 can be easily manufactured.

  In addition, since the continuous sheet-like fiber assembly 1J is formed by forming continuous organic fibers into a sheet shape, the adverse effects on the human body due to dust can be suppressed and recycled compared to the case of using glass fibers that are inorganic fibers. Core materials 550 and 560 having good properties and vacuum heat insulating materials 7,702,750 and 760 are obtained.

  In the present embodiment, the organic fiber 2 continuous to the fiber is used, and the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J are continuously wound around the winding frame from the inside to the outside. It may be a manufacturing apparatus or manufacturing method for manufacturing the core material 5,550,560 or the vacuum heat insulating material 7,702,750,760, etc. In the manufacturing apparatus or manufacturing method of the present embodiment, the fibers used are It does not have to be continuous long fibers. However, the fiber assembly may be in the form of a continuous sheet, and it is sufficient that the continuous sheet-like fiber assembly 1J is not damaged when wound around the winding frame 1311 with a predetermined tension. Therefore, the organic fiber assembly 1 may not be a continuous sheet-like fiber assembly 1J, and may be an inorganic fiber assembly. In the manufacturing apparatus and the manufacturing method of the present embodiment, the same effect can be obtained as long as it is a continuous sheet-like fiber assembly. Although continuous sheet-like fiber aggregates may be used as they are, if the continuous sheet-like fiber aggregates are in the form of a raw fabric roll wound around a raw fabric roller, they are easy to manufacture and handle. It is even better because it improves the performance.

  Here, when the core material 550 is manufactured by stacking and winding the organic fiber assembly 1 and the continuous sheet-like fiber assembly 1J, the core material may be manufactured by winding without wrapping a predetermined amount Xb. . If the number of stacked organic fiber assemblies 1 and continuous sheet-shaped fiber assemblies 1J is increased, the type of fiber assembly can be changed by the number of stacked layers. In other words, fiber aggregates with different fiber weights are used, or fiber aggregates with different fiber types (for example, fibers with different temperature characteristics, fibers with different fiber diameters, or tensile strength). Good fibers, fibers having different thermal conductivity characteristics, etc.) can be mixed in accordance with the usage environment of the device, so that a core material and a vacuum heat insulating material suitable for the usage form can be obtained. Accordingly, it is possible to ensure both heat insulation performance and high-temperature proof stress, to ensure heat insulation performance, avoid adverse effects on the human body, and improve recyclability. In this case, even if a plurality of fiber assemblies are stacked, it is not necessary to shift by a predetermined amount Xb. Therefore, the core member 5 may be formed by stacking and winding the fiber assemblies having the same width without shifting. Further, the core material 5 may be formed by overlapping and winding up fiber assemblies having different widths.

  Here, when a vacuum heat insulating material used for heat insulation of a device having a high temperature part (for example, 70 ° C. or higher) such as a hot water storage tank of a hot water storage device or a compressor having a high temperature part is required, A fiber having a proof stress (heat resistance) (fibers such as LCP and PPS which are organic fibers, or glass fibers which are inorganic fibers alone or in combination) may be used for at least one fiber. In this case, a vacuum heat insulating material may be manufactured by stacking fiber assemblies using fibers having high temperature proof stress (heat resistance) so as to be arranged on the surface side when the core material is formed. In this way, a fiber assembly using fibers having high temperature resistance (heat resistance) is arranged on the surface side as a vacuum heat insulating material, so that a fiber assembly using fibers having high temperature resistance (heat resistance) is used. If the vacuum heat insulating material is installed so that the body is arranged on the high temperature part side of the device, the device having the high temperature part can be insulated.

  In addition, in the case of vacuum heat insulating materials used for heat insulation such as refrigerators and heat insulation boxes that require high heat insulation performance, heat insulation performance is required, so the solid heat conductivity is small and the heat insulation performance is improved. An expected fiber (for example, polystyrene which is an organic fiber, glass fiber which is an inorganic fiber, etc.) may be used for at least one fiber.

  In addition, in the case of vacuum insulation materials used for heat insulation of equipment such as refrigerators, air conditioners and water heaters that require recyclability, glass fibers that are inorganic fibers are used. Glass fiber is mixed with urethane waste and is used for thermal recycling. Glass fiber is not recyclable because it reduces combustion efficiency and becomes a residue. An organic fiber such as LCP may be used.

  Even when environmental problems or adverse effects on the human body are considered, glass fibers are hard and brittle, so dust may scatter when adhering to the skin and mucous membranes of workers when vacuum insulation materials are manufactured or disassembled. Since the handling and workability are issues, it is better to use organic fibers.

(Core material manufacturing method 5)
Next, the manufacturing method of the core material which has a level | step difference is demonstrated. In FIG. 20, at least one original fabric roll 1307 having a first predetermined width and an original fabric roll having a width smaller than the first predetermined width are combined in the width direction so as to be substantially equal to the first predetermined width. Although the case where it winds around the reel 1311 using at least one combination original fabric roll 1305 has been described, here, at least one original fabric roll 1308 having a fourth predetermined width and a fourth predetermined width are used. A case in which a core material having a step in the width direction and a vacuum heat insulating material are manufactured by using at least one original fabric roll 1309 having a small width and wound around a winding frame 1311 will be described.

  FIG. 25 shows a case in which winding is performed on the reel 1311 using at least one original roll 1308 having a fourth predetermined width and at least one original roll 1309 having a width smaller than the fourth predetermined width. It is a schematic diagram of a winding apparatus, and is a figure for demonstrating the manufacturing method of another core material showing this Embodiment. FIG. 26 is a schematic diagram of a core material manufactured by being formed into a flat plate shape after being wound by the winding device of FIG. 25, and a vacuum heat insulating material. FIG. FIG. 26B shows the core material as viewed from the direction of arrow A in FIG. 26A (a diagram when the core material is viewed from the length direction), and FIG. 27 shows the core material of FIG. FIG. 27A is a view showing a vacuum heat insulating material sealed after being inserted into the outer packaging material and decompressed, and FIG. FIG. 27B is a view of the vacuum heat insulating material as viewed from the direction of the arrow B in FIG. 27A (viewed from the length direction of the core material constituting the vacuum heat insulating material).

  In FIG. 25, the 4th original fabric roll 1308 which has the 4th predetermined width | variety is the predetermined | prescribed which the fiber assembly 1J continuous in the length direction which has the predetermined width demonstrated in FIGS. 6-9 and FIG. 20 was wound. It is equivalent to the substantially cylindrical raw rolls 1301 and 1307 having a width, and the same parts are denoted by the same reference numerals, and detailed description thereof is omitted. The fourth original fabric roll 1308 has a fourth predetermined width, and the fourth fiber assembly 1JA continuous in the length direction is continuously wound in a coil shape so as to have a fourth predetermined width. Is formed. Here, the fourth fiber assembly 1JA wound around the fourth raw roll 1308 is continuous in the width direction, and its width HG1 is set to be approximately the same as the width HG necessary for the core material 570. Yes. Here, the fourth raw fabric roll 1308 may be manufactured by winding the fiber assembly 1JA cut in advance into the fourth predetermined width HG, or may have a width larger than the fourth predetermined width HG. You may manufacture by cutting a width direction so that a width dimension may become the 4th predetermined width HG after winding a fiber assembly in the substantially cylindrical shape.

  In addition, the fifth original roll 1309 having the fifth predetermined width which is narrower than the fourth predetermined width is also the fourth predetermined width which is the same as the fourth original roll 1308. The fifth predetermined width which is narrower than the width and has a fifth predetermined width is continuously wound in a coil shape so as to have the fifth predetermined width. Is formed. Here, the fifth fiber assembly 1JB wound around the fifth original fabric roll 1309 is continuous in the width direction, and is set to a width HG2 smaller than the width HG1 of the core material 570. Here, the fifth original fabric roll 1309 may be manufactured by winding the fiber assembly 1JB that has been cut in advance into the fifth predetermined width HG2, or a width larger than the fifth predetermined width HG2. After the fiber assembly (for example, the fourth fiber assembly 1JA wound around the fourth raw fabric roll 1308 having the predetermined width HG1) is wound in a substantially cylindrical shape, the width dimension becomes the fifth predetermined width 1JB. You may manufacture by cutting the width direction.

  Accordingly, the continuous fiber aggregates having different widths (the fourth fiber aggregate 1JA having a wide width and the fifth fiber aggregate 1JB having a narrow width) are simply stacked in a direction substantially perpendicular to the sheet surface and wound in the width direction. Further, since the thick portion 571 and the thin portion 572 are provided, the core member 570 having a level difference in the thickness direction between the thick portion 571 and the thin portion 572 can be easily manufactured. Since the core member 570 has the thick portion 571 and the thin portion 572 formed by winding the fiber assemblies 1JA and 1JB, steps having substantially the same height Tf can be obtained on both sides in the thickness direction. Here, the thickness ts1 of the thick portion 571 is formed thicker than the thickness ts2 of the thin portion 572 (the thickness ts1 of the thick portion 571 is approximately twice the thickness ts2 of the thin portion 572). And has a relationship of ts1 = ts2 + 2 × Tf).

  In this case, the vacuum heat insulating material 770 formed by sealing the core material 570 inserted into the outer packaging material 4 in a decompressed state also includes the thick portion 771 and the thin portion 772 in the width direction, and thus in the width direction. There is a level difference corresponding to the difference Tg between the thicknesses of the thick portion 771 and the thin portion 772. The step Tg of the vacuum heat insulating material 770 is formed on both sides in the thickness direction and is smaller than the step Tf of the core material 570 by the reduced pressure (Tg <Tf). The vacuum heat insulating material 770 includes a thick portion 771 and a thin portion 772, and the thickness tv1 of the thick portion 771 is formed to be greater than the thickness tv2 of the thin portion 772 (thickness tv1 of the thick portion 771). Is approximately twice the thickness tv2 of the thin portion 772, and has a relationship of tv1 = tv2 + 2 × Tg).

  Therefore, the core material 570 having the step Tf in the width direction can be easily manufactured simply by stacking and winding the continuous fiber assemblies 1JA and 1JB in a substantially right angle direction on the sheet surface and forming a flat plate shape. If the core material 570 is used, the vacuum heat insulating material 770 having the step Tg in the width direction can be easily manufactured. The steps Tf and Tg are formed on both sides in the thickness direction.

  Here, as the position of the step provided in the width direction, the installation position of the fifth original roll 1309 with respect to the position in the width direction of the fourth original roll 1308 is appropriately selected (the central portion in the width direction of the fourth original roll 1308). The fifth original fabric roll 1309 is disposed on the width direction end side of the fourth original fabric roll 1308, or the like. The step position in the width direction can be set freely. Further, the step width HG2 can be freely set by changing the size of the fifth predetermined width HG2 of the fifth raw roll 1309. (Regarding the ratio of the width HG2 of the thick portion 571 to the width HG1 of the core material 570, the fourth predetermined width HG1 of the fourth original roll 1308 and the fifth predetermined width HG2 of the fifth original roll 1308 are larger. It can be set freely by changing the size as appropriate.)

  Here, as shown in FIG. 25, the fourth (organic) fiber assembly 1JA of the fourth original fabric roll 1308 and the fifth fiber assembly 1JB of the fifth original fabric roll 1309 are substantially omitted with respect to the sheet surface. In the case of stacking in a perpendicular direction and winding on the reel 1311, the fifth (organic) fiber assembly 1JB of the fifth original fabric roll 1309 is replaced with the fourth (organic) fiber assembly of the fourth original fabric roll 1308. It is better to wrap the sheet so that it is radially outward with respect to the reel 1311 rather than 1 JA.

  Here, for example, when the core material is manufactured by the method described with reference to FIG. 9, the sheet-shaped fourth (organic) fiber assembly 1JA continuous with the winding frame 1311 and the sheet-shaped fifth (organic). The fiber assembly 1JB is wound in a substantially cylindrical shape (coil shape) around the winding frame 1311 with a predetermined tension in a state where the fiber assembly 1JB is overlapped. When the reel 1311 is pulled out, the fourth fiber assembly having the fourth predetermined width having a large width comes closer to the inner periphery side of the substantially cylindrical fiber assembly than the fifth fiber assembly having a small width. In this way, when the substantially cylindrical fiber assembly is pulled out from the winding frame 1311 and wound in a direction substantially perpendicular to the sheet surface, the fiber assembly does not get caught on the winding frame on the innermost circumferential side. good.

  That is, when the fourth fiber assembly 1JA and the fifth fiber assembly 1JB are wound in an overlapped state, the fourth fiber assembly is narrower than the fourth fiber assembly. Is wound on the winding frame 1311 from the inner side to the outer side so that the substantially cylindrical fiber aggregate wound on the winding frame 1311 is wound from the winding frame 1311 to the winding frame. Since the fourth fiber assembly 1JA having the fourth predetermined width and continuous in the width direction is arranged at the innermost side of the substantially cylindrical fiber assembly when being extracted from 1311, the innermost side Since the fiber assemblies to be arranged are continuously wide in the width direction with the fourth predetermined width, the fifth fiber assembly 1JB having a width smaller than the fourth predetermined width is arranged on the innermost side in the width direction. Compared to the case, the fiber assembly is scattered and disturbed, or the disordered fiber assembly Manufacturing is easy workability improves production time of extraction tends core 570 does not caught in the winding frame 1311 when withdrawn from the reel 1311 can be shortened. Further, the quality of the core material 570 manufactured by forming the substantially cylindrical fiber assemblies 1JA and 1JB extracted from the winding frame 1311 into a flat plate shape is stabilized.

  Here, the 4th original fabric roll 1308 and the 5th original fabric roll 1309 have the fiber assembly 1JB of the fifth original fabric roll 1309 more than the fiber assembly 1JA of the fourth original fabric roll 1308. Are wound so as to be outside in a direction substantially perpendicular to the sheet surface, and the manufacturing method of the core material 570 and the vacuum heat insulating material 770 is the same as that shown in FIG.

In the manufacturing method of FIG. 9, instead of one original roll 1301 wound around the reel 1311, at least two original rolls (for example, in FIGS. 12 to 18) stacked in a direction substantially perpendicular to the sheet surface. When the 1st original fabric roll 1305 and the 2nd original fabric roll 1306 which were shown and were piled up, the 1st original fabric roll 1305 and the 3rd original fabric roll 1307 which were shown in FIGS. In some cases, such as when the fourth original roll 1308 and the fifth original roll 1309 shown in FIG. 25 and FIG. 26 are overlapped and wound, a plurality of original rolls may be applied. In the present embodiment, the winding method, the core material manufacturing method, the vacuum heat insulating material manufacturing method, and the like may be the same as or different from those shown in FIG. May be. A core material, a core material having a dent or a step, and a vacuum heat insulating material can be easily manufactured by a simple method in which the process equivalent to the step shown in FIG.

  As described above, with a single original fabric roll (for example, the fourth original fabric roll 1308) in at least one width direction in which the fiber assembly 1JA having the fourth predetermined width and continuous in the length direction is wound. At least one original fabric roll (for example, a fifth original fabric roll 1309) wound with a fiber assembly 1JB having a width smaller than the fourth predetermined width and continuous in the length direction, A core material 570 having a step with an arbitrary width at an arbitrary position in the width direction can be obtained at low cost and efficiently by simply winding the anti-roll 1308 and the fifth original roll 1309 on the sheet surface in a substantially perpendicular direction. Or the vacuum heat insulating material 570 can be manufactured.

  Further, a plurality of fiber assemblies 1JA, 1JB of a single original roll 1308, 1309 are stacked in a direction substantially perpendicular to the sheet surface, and a substantially cylindrical winding frame 1311 is directed from the inside to the outside with a predetermined tension. Since the core material 570 is manufactured by winding and then clamping the substantially cylindrical fiber assembly with the clamp member 1320 and then releasing the tension from the winding frame 1311, the width direction can be easily obtained with simple equipment. A core material having a step having an arbitrary width at any position can be manufactured.

  Here, a fifth original roll 1309 having a narrow fifth width, which is smaller than the fourth predetermined width having a wide width of the fourth original roll 1308, is replaced with a fifth original roll 1308 having a wide width. In the above description, the sheet surface is wound around the sheet surface so as to be overlapped substantially perpendicularly, but this wide width is applied to at least one wide fourth raw roll having a fourth predetermined width in the width direction. A state in which a plurality of narrow original fabric rolls (which may be the same width or different widths) having a width smaller than the fourth predetermined width are arranged with a gap in the width direction at least in one place If there are at least the number of gaps provided in the width direction, steps in the width direction (steps of the same width or different widths; if there are multiple gaps, multiple steps) or indentations The core material and vacuum heat insulating material which have are obtained. That is, a state in which a plurality of narrow fiber assemblies are arranged so as to have a gap and are stacked on a wide fiber assembly (a plurality of narrow fiber assemblies are more radial than a wide fiber assembly) If it is wound up in a state of being stacked so as to be on the outside, a core material or a vacuum heat insulating material having a plurality of steps in the width direction (steps having the same width or different widths) can be obtained. In addition, it is possible to easily fold the vacuum insulation material from the gaps between multiple narrow fiber assemblies (multiple steps and dents), and it can be bent at any angle and applied to walls with angles. A possible core material and vacuum heat insulating material can be obtained.

  Here, a heat insulating material (such as urethane foam or vacuum heat insulating material) is formed in a taper-shaped partition wall that is a hollow space that separates the storage room and the storage room of the refrigerator and becomes thinner toward the tip. Since the vacuum heat insulating material 770 has a step having a thin portion 772 and a thick portion 771 in the width direction, the thin portion 772 becomes the tip side of the tapered partition wall. If the vacuum heat insulating material 770 is inserted as described above, the thickness of the thin portion 772 is less than that in the case where the vacuum heat insulating material having a substantially uniform thickness is inserted in the thick portion 771 without a step. It becomes possible to insert the vacuum heat insulating material 770 up to the vicinity of the tip of the tapered partition wall, and the heat insulating performance can be improved.

(Manufacturing method 6 of a core material)
In FIG. 25 to FIG. 27, the case where a step is provided in the core material or the vacuum heat insulating material has been described, but here the core when the cross-sectional shape of the length direction end of the core material or the vacuum heat insulating material is a substantially triangular shape. A method for manufacturing the material will be described. FIG. 24 also illustrates the case where the end portions in the length direction of the vacuum heat insulating materials 7, 750, 760 are substantially triangular. In the case of FIG. 24, the length direction of the vacuum heat insulating materials 7, 750, 760 is illustrated. This is a case where the end shape is a substantially triangular shape in which both of the thickness direction upper and lower surfaces are outward in the length direction and gradually decrease in thickness toward the substantially central plane in the thickness direction. . Here, the shape of the end portion in the length direction of the vacuum heat insulating material 780 is the outer side in the length direction, and one surface in the thickness direction (a piece surface) is the other surface in the thickness direction (opposite in the thickness direction). A case where a substantially triangular shape whose thickness gradually decreases toward the side surface) will be described.

  By making the cross-sectional shape of the end portion of the vacuum heat insulating material into, for example, a substantially triangular shape protruding outward, heat insulation is provided in a taper-shaped partition wall that is a hollow taper that separates the storage room and the storage room of the refrigerator. In what forms a heat insulating wall by inserting a material (such as urethane foam or vacuum heat insulating material), the end shape of the vacuum heat insulating material is a substantially triangular shape protruding outward, and the thickness decreases toward the tip, It becomes possible to insert the vacuum heat insulating material up to the vicinity of the tip in the tapered partition wall, and the heat insulating performance can be improved.

  FIG. 28 is an explanatory view schematically showing a laminated state of the core material 5 forming the vacuum heat insulating material 7, and the same parts as those in FIG. 28A is a perspective view of the core material 5, and FIG. 28B is a predetermined position in the thickness direction of the core material 5 (for example, approximately a half position in the thickness direction and a substantially center position in the thickness direction). ) Is a diagram in which the core material is divided into two parts by cutting along a plane substantially perpendicular to the thickness direction.

  28A, the core material 5 is equivalent to the core material 5 described in FIG. 5, and is manufactured by, for example, the manufacturing method shown in FIG. Core materials 580A and 580B shown in FIG. 28 (b) are two core materials formed when the core material 5 is cut at a plane substantially perpendicular to the thickness direction at approximately a half position in the thickness direction. The two cut core members 580A and 580B have a substantially triangular shape with end faces 585A, 585B, 586A, and 586B in the length direction protruding outward. That is, a continuous sheet-like (flat plate-like) fiber assembly 1J (eg, organic fiber assembly 1) formed from continuous fibers (eg, organic fiber 2) is continuously wound from the inside to the outside. In this case, the core material 5 is formed at a predetermined position in the thickness direction (substantially 1/2 position, for example, a length direction end of the core 5 (for example, a bent end 5f). If the core member 5 is cut at a plane substantially perpendicular to the thickness direction at the clamping member 1320), the core material 5 is continuous from the inside toward the outside at the cutting position of the end portion in the length direction (bending end portion 5f). As a result, the radius is larger on the outer side than on the inner side, and the circumference is increased accordingly. Therefore, the core material 5 has the length of the fiber assembly 1J that is longer by the amount of the fiber assembly on the outer peripheral side located on the outer peripheral side than the fiber assembly on the inner peripheral side, and is cut into two pieces. The core members 580A and 580B have a laminated structure of a plurality of laminated fiber assemblies in which the lengthwise end portions 585A, 585B, 586A, and 586B are bent into a quarter arc shape when cut. The lengths of the core members 580A and 580B in the length direction are the lengths of the outer peripheral portions 583A and 584A by extending the fiber assemblies 1J laminated in a plurality of thickness directions bent in an arc shape in a substantially planar shape. Is the longest, and the length gradually decreases toward the inner portions 583B and 584B. Therefore, the cross-sectional shape of the length direction end portions 585A, 585B, 586A, and 586B or the shape of the length direction end portion viewed from the width direction is Length direction A substantially triangular shape projecting outwardly gradually thickness decreases toward the end side.

  In the above description, a continuous sheet-like fiber assembly 1J (for example, organic fiber assembly 1) formed from continuous fibers (for example, organic fibers 2) is continuously connected to the reel 1311 from the inside to the outside. A substantially cylindrical fiber assembly is obtained by winding, and the substantially cylindrical fiber assembly is formed on the flat core member 5 and then cut at, for example, a substantially central position in the thickness direction to obtain a longitudinal end 585A. 585B, 586A, and 586B have described the method of manufacturing two core members 580A and 580B having a substantially triangular shape, but a continuous sheet-like fiber assembly 1J formed from continuous fibers (for example, organic fibers 2) ( For example, a substantially cylindrical fiber assembly is obtained by continuously winding the organic fiber assembly 1) around the winding frame 1311 or the like from the inside to the outside. The circle of the substantially cylindrical fiber assembly is obtained. Even if it is cut at the above two locations and formed into a flat plate shape, as shown in FIG. 28, there are two substantially triangular cores (580A, 580B) is formed. In this case, since a process of forming a substantially cylindrical fiber assembly into a flat plate shape is not necessary, two cores can be obtained at a time with a simple manufacturing process in a simple manufacturing facility, so that the manufacturing process is simple and low cost. Core material and vacuum heat insulating material can be obtained. In addition, since a plurality of core materials are formed by cutting at a plurality of locations on the circumference of a substantially cylindrical fiber assembly and expanding it into a flat plate shape, a plurality of core materials are formed at a time with a simple manufacturing process in a simple manufacturing facility. Since a plurality of materials are obtained, a core material and a vacuum heat insulating material can be obtained with a simple manufacturing process and at a low cost.

  Moreover, if it cuts at one place on the circumference of a substantially cylindrical fiber assembly and forms it into a flat plate shape, a core material that is longer in the length direction than the diameter of the winding frame 1311 of the production facility can be obtained. As a result, a long core material and vacuum heat insulating material can be obtained with a small manufacturing facility. Therefore, since there is no need for a large site, the manufacturing equipment does not take up space, and the manufacturing equipment can be downsized compared to the length of the core material. A heat insulating material is obtained.

  That is, in the core members 580A and 580B, the fiber assemblies 1J whose length in the length direction gradually decreases in the thickness direction (or in which the length in the length direction gradually increases) are sequentially approximately perpendicular to the sheet surface. By overlapping a plurality of sheets in the direction, the shape of the end portion in the length direction forms a substantially triangular shape whose thickness gradually decreases toward the distal end side in the length direction (outward direction). Here, the core members 580A and 580B have a substantially trapezoidal shape when viewed from the length direction or in the width direction cross section.

  Here, as shown in FIG. 9, the substantially cylindrical continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is clamped and held by the clamp member 1320 (clamp members 1320c and 1320d). If a cutting device or the like is provided at the position held by the clamp member 1320 to cut, it can be cut at a plane substantially perpendicular to the thickness direction at approximately a half position in the thickness direction of the core material 5. Become. At this time, if the clamp member 1320 is provided with a cutter function so that the core member 5 can be cut by the clamp member 1320, it is not necessary to provide a separate core member cutting device or the like. A core material whose direction end face shape is substantially triangular is obtained.

  In the vacuum heat insulating material 780 (780A, 780B) in which the core material 580 (580A, 580B) is separately inserted into the outer packaging material 4 and sealed in a decompressed state, the lengthwise ends of the core material protrude outward. It is formed in a substantially triangular shape. By making the cross-sectional shape of the end portion of the vacuum heat insulating material into a substantially triangular shape, the partition wall is tapered and has a level difference in the taper-shaped partition wall that is thin and tapered to separate the storage room and the storage room of the refrigerator. In the case where a heat insulating material (such as urethane foam or a vacuum heat insulating material) is inserted therein to form a heat insulating wall, the end shape of the vacuum heat insulating material 780 is a substantially triangular shape protruding outward, and the thickness increases toward the front end portion. Since the shape becomes smaller, the vacuum heat insulating material 780 can be inserted to the vicinity of the tip in the tapered partition wall, and the heat insulating performance can be improved. The present invention is not limited to a refrigerator, and can be applied to any partition wall or heat insulation wall that has a tapered shape or a step that is hollow and tapered.

  In the above description, the example in which the lengthwise end shape of the core material is formed in a substantially triangular shape has been described. Next, the case where the widthwise end shape of the core material is formed in a substantially triangular shape will be described. Here, for example, in the manufacturing method shown in FIG. 9, a method of winding the web roll 1301 around the reel 1311 while continuously moving the roll 1301 in the axial direction of the rotating shaft 1315 of the reel 1311 will be described.

  FIG. 29 is a diagram showing a manufacturing method of the core material representing the present embodiment, and the original roll 1301 is moved continuously or stepwise in the axial direction of the rotating shaft 1315 of the winding frame 1311. FIG. 30 is a diagram showing a core material 590 manufactured by the manufacturing method of FIG. 29, and FIG. 30 (a) is a core. The figure which looked at the material 590 from the width direction, FIG.29 (b) is the figure which looked at the core material 590 from the length direction (F direction of Fig.30 (a)), FIG.30 (c) has thickened the core material 590. It is a figure which shows the state cut | disconnected into two core materials (core material 590A, 590B) by the plane substantially orthogonal to the thickness direction in the about 1/2 position of a thickness direction. FIG. 30D is a front view of a vacuum heat insulating material formed by sealing the core materials 590A and 590B of FIG. 30C inserted into the outer packaging material and decompressed.

  As shown in FIG. 29, an original fabric roll 1301 around which a continuous sheet-like fiber assembly 1J (for example, organic fiber assembly 1) formed from continuous fibers (for example, organic fiber 2) is wound is substantially the same as the winding direction. By continuously winding in the axial length (axial center) direction (width direction) of the rotation axis of the original fabric roll 1301 in a perpendicular direction, or by continuously winding it around the winding frame 1311 from the inside toward the outside. A substantially cylindrical fiber assembly 1J is formed on the winding frame 1311 (in the process described in FIG. 9, the original fabric roll 1301 does not move in the axial length direction (axial direction, width direction) of the rotation shaft. Here, the fiber assembly 1J is continuously wound around the winding frame 1311 while the original roll 1301 is moved by a predetermined amount continuously or stepwise in the axial length direction (axial direction, width direction) of the rotating shaft. .)

  At this time, the original roll 1301 may be moved in only one direction or in a reciprocating direction. Further, instead of the original roll 1301, the winding frame 1311 may be wound while continuously or stepwise moving in the axial length direction (axial direction, width direction) of the rotation axis of the winding frame 1311. As for the moving speed of the original roll 1301 or the reel 1311 in the axial direction (axial length direction) of the rotating shaft, the cross-sectional shape of the end face in the width direction is inclined portions 591A1, 591A2 if the moving speed is moved at a constant speed. , 591B1, 591B2, and the slope portions 591A1, 591A2, 591B1, 591B2 are substantially linear. Even if the moving speed is continuously changed, the end face in the width direction becomes a substantially triangular shape. In this case, the shape of the slope portion in the substantially triangular cross section is that the slope portions 591A1, 591A2, 591B1, and 591B2 are inside. It has a curved shape such as a concave shape or a substantially arc shape protruding outward. In addition, even if a plurality of movement speeds are combined and changed, the end face in the width direction becomes a substantially triangular shape. In this case, the shape of the slope portion in the substantially triangular cross section is a complicated shape in which straight lines and curves are combined. (For example, it is a convex shape, a concave shape, a concave-convex shape, a bent shape, a step shape, etc.). In particular, even if the moving speed is changed to a plurality of steps (for example, two steps or three steps) in the middle of the width direction, the end surface in the width direction has a substantially triangular shape protruding outward. , 591B2 has a shape in which a plurality of straight lines (planes) and curves (curved surfaces) are connected by concave inward, convex outward, or a combination of concave and convex.

  In addition, both the original roll 1301 and the reel 1311 may move in the same direction or in the opposite direction with respect to the axial length direction of each rotating shaft. The substantially cylindrical fiber assembly 1J wound around the winding frame 1311 is obtained by, for example, a flat core material 590 (the core shown in FIGS. 30A and 30B) in the same process as in FIG. Material 590). Here, since the original roll 1301 moves by a predetermined amount in the axial center direction of the rotation shaft, the width of the winding frame 1311 is made larger than the width of the original roll 1301 by a length equal to or longer than the movement amount. When the fiber assembly 1J is wound around the winding frame 1311, the fiber assembly 1J protrudes from the width direction of the winding frame 1311 so that the end face in the width direction is wound up or other machines after winding. Therefore, the core material 590 is easy to wind up and the quality of the core material 590 is improved.

In the core member 590 shown in FIG. 30B, two end faces in the width direction are substantially triangular, but one end is substantially triangular so as to protrude outwardly by the slope portions 591A1 and 591B1. The other end has a substantially triangular shape that is recessed inward by the slope portions 591A2 and 591B2, so that the cross-sectional shape of the core member 590 is an arrow shape.
Core material 590A, 590B shown in FIG. 30 (c) is a substantially cylindrical fiber assembly wound around core material 590 shown in FIG. 30 (b) in approximately 1/2 position in the thickness direction (winding frame 1311). 2 cores formed when cut at a plane substantially perpendicular to the thickness direction (position F in FIG. 30B) at the winding start portion position of the winding frame 1311 of the body 1J. The two core members 590 </ b> A and 590 </ b> B thus formed have a substantially triangular shape in which the cut end surfaces in the width direction protrude outward so that the thickness decreases toward the outer side. That is, a continuous sheet-like continuous sheet-like fiber assembly 1J (eg, organic fiber assembly 1) formed from continuous fibers (eg, organic fiber 2) is substantially perpendicular to the winding direction from the inside toward the outside. A flat core material 590 is formed by continuously winding the roll roll 1301 in the direction (axial center direction of the rotating shaft) or by continuously winding it on the winding frame 1311 in a stepwise manner. In this case, The thickness of the core material 590 is approximately ½ position in the thickness direction (for example, the position where the core material 590 is clamped by the clamp member 1320, the position indicated by the alternate long and short dash line in the thickness direction in FIG. 30B). When the core member 590 is cut at a plane substantially perpendicular to the direction, the cross-sectional shape (or the end portion in the width direction as viewed from the length direction) of the two end members in the width direction at the cutting position of the end portion in the width direction. Is the width) The outer (distal side) toward and substantially triangular shape projecting outwardly gradually thickness decreases.

  At this time, as shown in FIG. 30, the two core members 590A and 590B have the cross-sectional shape of the width direction end portion or the shape of the width direction end portion viewed from the length direction, and both ends in the width direction protrude outward. Although it has a substantially triangular shape, the inclined directions of two substantially triangular slope portions (for example, in the case of the core material 590A, the slope 591A1 and the slope 591A2) formed at both ends of one core are the same (substantially parallel). Therefore, the core materials 590A and 590B cut into two have a substantially parallelogram shape when viewed from the cross-sectional shape in the width direction or from the length direction.

  Here, a method of cutting the core material 590 into two core materials 590A and 590B will be described. As described with reference to FIG. 9, the substantially cylindrical continuous sheet-like fiber assembly 1J wound around the winding frame 1311 is clamped and held at, for example, two places by the clamp member 1320 (clamp members 1320c and 1320d). Therefore, if a cutting device or the like is provided at the position held by the clamp member 1320 for cutting, the core material 5 has a substantially half position (substantially in the thickness direction). It can be cut at a plane substantially perpendicular to the thickness direction at the center position. At this time, if the clamp member 1320 is provided with a cutter function so that the core member 590 can be cut by the clamp member 1320, there is no need to provide a separate core member cutting device or the like. A core material having a substantially triangular end face shape is obtained.

Next, the shape of the end portion in the length direction of the core material 590 will be described.
Similarly to the core material 580 described with reference to FIG. 28, the core material 590 is formed by, for example, fixing the flat core material 590 with approximately a half position in the thickness direction (for example, the clamp member 1320 at the end in the length direction of the core material 5 When the core material 590 is cut at a plane substantially perpendicular to the thickness direction at the clamping position), the fiber assembly 1J is directed from the inside toward the outside at the cutting position at the end in the length direction (the position of the bent end 5f). Since it is continuously wound, the circumference of the fiber assembly 1J becomes longer by the amount that the outer side is positioned on the outer peripheral side than the inner side. Accordingly, the flat core member 590 has a longitudinal end portion (bent end portion 5f portion) in which the fiber assembly 1J is bent in an arc shape and stacked in plural, and thus the core member 590 is cut into two. In this case, since the fiber assembly 1J is bent in an arc shape at the cutting position (end position in the length direction) of the two core members, the outer circumference side is obtained by extending the fiber assembly 1J bent in an arc shape in a substantially flat shape. Two fiber assemblies 590A and 590B having a substantially triangular shape in which the cross-sectional shape in the length direction end portion whose length is the longest and gradually decreases toward the inner portion are projected outward are obtained. That is, the cut core members 590A and 590B have a cross-sectional shape at the end in the length direction or a shape at the end in the length direction as viewed from the width direction that gradually decreases in thickness toward the outside in the length direction (tip side). This is a substantially triangular shape.

  Therefore, the cut two core members 590A and 590B have a substantially triangular shape whose thickness gradually decreases in the thickness direction in both the length direction cross-sectional shape and the width direction cross-sectional shape. That is, the cross-sectional shape of the end portion in the length direction or the shape of the end portion in the length direction viewed from the width direction becomes a substantially triangular shape that gradually decreases in thickness toward the front end side in the length direction, and The cross-sectional shape or the shape of the end portion in the width direction viewed from the length direction becomes a substantially triangular shape whose thickness gradually decreases toward the front end side in the width direction.

  The vacuum insulating material 790 (790A, 790B) sealed in a state where the core material 590 (590A, 590B) is separately inserted into the outer packaging material 4 and depressurized is the length direction end and the width direction end of the core material. The part is formed in a substantially triangular shape protruding outward. By making the cross-sectional shape of the end portion of the vacuum heat insulating material into a substantially triangular shape protruding outward, the inside and step of the taper-shaped partition wall having a taper that is hollow and partitioning the storage room and the storage room of the refrigerator In the case where a heat insulating material (foamed urethane, vacuum heat insulating material, etc.) is inserted into the partition wall or heat insulating wall thus formed to form a heat insulating wall, the end shape of the vacuum heat insulating material 790 is substantially triangular and toward the tip. Since the thickness is reduced, the vacuum heat insulating material 790 can be inserted up to the vicinity of the tip in the tapered partition wall, and the heat insulating performance can be improved. In addition, the cross-sectional shape of the end portions in the width direction of the vacuum heat insulating materials 790A and 790B is substantially triangular, but in one vacuum heat insulating material (for example, 790A), the two end portions of the substantially triangular shape on both ends in the length direction. Since the directions of the slope portions (for example, 791A1 and 791A2) are substantially parallel, when one vacuum heat insulating material (for example, 790A) is viewed from the length direction, it has a substantially parallelogram shape.

  Moreover, since the vacuum heat insulating material 790 is a substantially triangular shape (convex shape protruding toward the tip side) protruding outward, the thickness of the longitudinal direction cross-sectional shape and the width direction cross-sectional shape gradually decreases toward the outside, The vacuum insulation 790 can be installed in either the length or width direction of the vacuum insulation when installing it in equipment such as refrigeration / air-conditioning equipment, refrigerators, and water heaters. A large vacuum insulation is obtained. In addition, when a plurality of vacuum heat insulating materials 780 and 790 are continuously arranged side by side, if they are combined so that the inclined portions (for example, 781A, 781B, 791A, 791B, etc.) of substantially triangular end portions are in contact with each other, A high-performance vacuum heat insulating material that can suppress a decrease in the heat insulating thickness at the connecting portion of the material can be obtained. Further, another part or a heat insulating material may be sandwiched in the connecting portion to adjust the length or improve the heat insulating performance.

  Here, in the case where the vacuum heat insulating materials 780 and 790 are inserted into the partition wall or the heat insulating wall having a taper shape or a step, the vacuum heat insulating material 780 is disposed on the tapered surface side of the tapered shape which is tapered of the partition wall or the heat insulating wall. The vacuum heat insulating material 780, 790 is inserted into the tapered partition wall or the heat insulating wall or in the stepped partition wall or the heat insulating wall by inserting the 790 inclined surfaces 781 and 791 so that the surfaces thereof face each other. Since 780 and 790 can be inserted up to the vicinity of the tip in the partition wall or the heat insulating wall, the heat insulating efficiency is improved. In addition, the core materials 580 and 590 have been described with respect to an example in which a substantially cylindrical or flat fiber assembly is cut at a plurality of locations (for example, two locations). A core material or vacuum heat insulating material having a substantially triangular shape is obtained. If only one end in the length direction is desired to be substantially triangular, it may be cut at a predetermined length position in the length direction.

  FIG. 31 is a diagram illustrating the structure of a heat insulating wall (heat insulating member). In the figure, the heat insulating wall 800 has vacuum heat insulating materials 780 and 790 inserted in a cavity 830 inside an outer shell 805, and the heat insulating wall 800 has a heat insulating material different from the vacuum heat insulating materials 780 and 790 around the vacuum heat insulating materials 780 and 790. A material (for example, urethane) is enclosed. The outer shell 805 includes an upper surface (one surface in the thickness direction) 810, a lower surface (the other surface in the thickness direction) 820, and a tip portion 840, and at least one surface (one) of the upper surface 810 or the lower surface 820 includes: Since it is manufactured by injection molding or the like, it is inclined at an angle θ, for example, so that the thickness gradually decreases or decreases stepwise toward the tip end portion 840 due to the necessity of providing a draft or the like. Accordingly, since the lower surface 820 is formed so as to be inclined at an angle θ with respect to the upper surface 810, the lower surface 820 is inclined with respect to the upper surface 810, and the lower surface 820 has an inclined portion (an outer inclined surface 821, inner surface). A slope 822). That is, a slope (taper) portion is provided on either the upper surface 810 or the lower surface 820.

  Here, the slope portions 781 and 791 of the vacuum heat insulating materials 780 and 790 are inserted into the outer shell 805 so as to face the tapered surfaces (821 and 822), and are substantially triangular protruding outside the vacuum heat insulating materials 780 and 790. The end portion of the shape is inserted and arranged so that it is on the tip end portion 840 side of the outer shell 805.

  Therefore, the outer wall 805 of the heat insulating wall 800 is gradually reduced in thickness toward the front end 840 side, and at least one of the upper surface 810 and the lower surface 820 has an outer surface 805 having tapered surfaces 821 and 822 inclined relative to the other. And the end in the length direction or the end in the width direction has a substantially triangular shape having slope portions (781, 791) whose thickness gradually or stepwise decreases toward the outside in the length direction or the width direction. Vacuum heat insulating materials 780 and 790, and the slope portions 781 and 791 at the ends of the vacuum heat insulating materials 780 and 790 are inserted so as to be on the tip 840 side in the outer shell 805, and the slope portions 781 of the vacuum heat insulating materials 780 and 790 are included. , 791 are arranged in the outer shell 905 so that the outer shell 805 faces the taper surfaces 821 and 822 of the outer shell 805. Insertable and becomes adiabatic efficiency wood 780,790 to the vicinity of the distal end portion of the heat insulating wall became insulating wall 800 in or step having a tapered shape is improved. Further, the heat insulating wall 800 is connected between storage rooms having different set temperatures of the refrigerator (for example, storage rooms in a minus temperature zone (freezer room 300, ice making room 500, switching room 200, etc.) and storage rooms in the vicinity of zero ° C. or plus temperature zone ( When applied to a partition wall that partitions the refrigerator compartment 150 and the vegetable compartment 400))), the vacuum heat insulating material can be inserted up to the vicinity of the end of the partition wall, so that an energy-saving refrigerator with good heat insulation efficiency can be obtained.

  Further, since the vacuum heat insulating materials 780 (780A, 780B) and 790 (790A, 790B) are substantially triangular shapes with the end portions protruding outward, a plurality of the vacuum heat insulating materials 780 (780A, 780B) are installed so that the inclined surface portions are in contact with each other. Even if two or more vacuum heat insulating materials 780 and 790 are continuously installed, heat leakage from the connection portion of the vacuum heat insulating materials 780 and 790 can be reduced. When the heat insulating materials are installed side by side, heat leakage can be suppressed and a high performance vacuum heat insulating material can be obtained as compared with the case where a space is provided between the vacuum heat insulating materials. Further, the present invention is not limited to a refrigerator, and can be applied to any partition wall or heat insulating wall that has a tapered shape and a step that are hollow and tapered.

  Particularly, for example, in the vacuum heat insulating material 790 described with reference to FIGS. 29 and 30, both the width direction end and the length direction end are formed in a substantially triangular shape having a slope portion. It is possible to connect multiple sheets by overlapping the slope parts of multiple vacuum insulation materials in both directions, so there is no break in the vacuum insulation material at the connection site and heat leakage without increasing the thickness of the vacuum insulation material Equipment such as vacuum heat insulating material, heat insulating wall, refrigerator, etc. with a small amount can be obtained.

Moreover, even if it is a case where a level | step difference is provided in the thickness direction of a core material or a vacuum heat insulating material as demonstrated in FIGS. 25-27, it is possible to make an end part shape into a substantially triangular shape. After the core material is formed so as to have a step in the thickness direction described with reference to FIGS. 25 to 27, the core material is substantially perpendicular to the thickness direction at approximately a half position in the thickness direction as described with reference to FIG. 28. If it cut | disconnects in a plane, the length of the fiber assembly 1J will become long in the cut | disconnection position (bending edge part 5f) of a length direction edge part by the part which the outer side is located rather than an inner side. Therefore, the two core materials in a state where the core material 5 is cut have a step in the thickness direction, and the cross-sectional shape of the length direction end portion or the shape of the length direction end portion viewed from the width direction is long. It becomes a substantially triangular shape in which the thickness gradually decreases toward the front end in the direction.

  In the present invention, when the fiber assembly 1J of a single original roll 1301 is wound around the substantially cylindrical winding frame 1311 from the inside to the outside with a predetermined tension, the original roll 1301 is used as the original roll 1301. The reel 1311 is wound around the reel 1311 while moving continuously or stepwise in the axial length (axial center) direction of the rotary shaft, or the reel 1311 is continuously continuous in the axial length (axial center) direction of the rotary shaft 1315 of the reel 1311. Is wound around the winding frame 1311 while moving in a stepwise or stepwise manner, after which the substantially cylindrical fiber assembly is clamped by the clamp member 1320, and then the tension is loosened and pulled out from the winding frame 1311 to be approximately 1 in the thickness direction. / 2 position (for example, the position clamped by the clamp member 1320 at the end in the length direction of the core members 580 and 590) is cut and cut at a plane substantially perpendicular to the thickness direction. Cross-sectional shape of the end portion in the width direction easily has a step in the width direction at Bei can core material production is substantially triangular.

  In addition, when the core material is formed so as to have a step in the width direction described with reference to FIGS. 25 to 27, the fourth (organic) fiber assembly 1JA of the fourth raw roll 1308 as shown in FIG. And the fifth fiber assembly 1JB of the fifth original fabric roll 1309 are stacked in a substantially perpendicular direction to the sheet surface and wound on the winding frame 1311. At this time, the fourth original fabric roll 1308 includes the fourth fiber assembly 1JB. (Organic) Continuous in the axial direction of the rotating shaft 1315 of the reel 1311 in a state where the fiber assembly 1JA and the fifth fiber assembly 1JB of the fifth original fabric roll 1309 are stacked in a direction substantially perpendicular to the sheet surface. As a result of being wound around the winding frame 1311 while being moved, the cross-sectional shape of the width direction end portion or the shape of the width direction end portion viewed from the length direction gradually increases toward the front end side in the width direction. The thickness is substantially triangular.

  Therefore, a plurality of fiber assemblies 1JA, 1JB of a single original fabric roll 1308, 1309 are stacked in a direction substantially perpendicular to the sheet surface, and a substantially cylindrical winding frame 1311 is directed from the inside to the outside with a predetermined tension. When winding, the reel 1311 is wound around the reel 1311 while continuously moving in the axial direction of the rotary shaft 1315, and then the substantially cylindrical fiber assembly is clamped by the clamp member 1320, and then the tension is released. Since the core material 590 is manufactured by extracting from the winding frame 1311, a core material having a step in the width direction and having a substantially triangular cross-sectional shape at the width direction end can be manufactured easily with simple equipment.

In addition, in the case of a device in which urethane heat insulating material is inserted into the wall surface 800 together with the vacuum heat insulating material, the thickness of the end of the vacuum heat insulating material decreases gradually or stepwise toward the outer side (front end direction). Therefore, the vacuum heat insulating material can be inserted to the vicinity of the front end in the wall surface 800 or the partition wall 190, and the urethane heat insulating material is adjacent to the front end in the partition wall along the slope ( It is easy to flow to the back side), and it is possible to enclose and foam urethane insulation material to every corner in the partition wall, and to obtain a heat insulation wall and partition wall with high heat insulation efficiency.

  As described above, the vacuum heat insulating materials 750, 760, 770, 780, and 790 of the present invention are gradually or stepwise reduced in thickness in the lengthwise ends or in the widthwise ends. A core material 550, 560, 570, 580, 590 in which a plurality of sheet-like fiber assemblies having a predetermined width are laminated so as to have a substantially triangular shape, and a state in which the core material is housed inside and the inside is decompressed Gas barrier outer packaging material 4 having a sealing portion whose periphery is sealed in, and the outer packaging material is sealed by sealing the sealing portion in a substantially vacuum state inside the outer packaging material. Alternatively, a core material or vacuum heat insulating material having at least one end portion of a substantially triangular shape can be obtained by simply laminating a plurality of fiber assemblies having different sizes in the width direction gradually or stepwise. Moreover, since the end of the vacuum heat insulating material can be formed into a substantially triangular shape having a slope portion, when a plurality of vacuum heat insulation materials are arranged in the width direction or the length direction, they are stacked so that the slope portions face each other. The increase in the thickness of the overlapped portion can be suppressed to a small level, and the deterioration of the heat insulation performance can be suppressed. In addition, if organic fibers are used for the fiber assembly, the human body is not affected and recyclability is improved as compared with the case of using glass fibers.

  The core material 590 has a laminated structure in which a sheet-like fiber assembly continuous in the length direction is continuously wound from the inside to the outside while moving continuously or stepwise in the width direction. Since the cross-sectional shape of the end portion in the direction is a substantially triangular shape whose thickness is gradually or stepwise reduced toward the outer side, the sheet-like fiber assembly continuous in the length direction is wound while moving in the width direction. A core material and a vacuum heat insulating material having a substantially triangular shape at the end can be obtained while having a simple configuration that is simply wound around a frame. In addition, if the end of the vacuum heat insulating material has a substantially triangular shape having a slope portion, when the vacuum heat insulating materials are stacked in the width direction, the thickness of the overlapped portion is overlapped so that the slope portions face each other. The increase can be suppressed to a small level, and a decrease in heat insulation performance can be suppressed. In addition, if organic fibers are used for the fiber assembly, the human body is not affected and recyclability is improved as compared with the case of using glass fibers.

  Further, since the cross-sectional shape in the width direction of the core materials 590A and 590B is a substantially parallelogram shape, a core material and a vacuum heat insulating material in which both end portions in the width direction are substantially triangular are obtained. Further, since the vacuum heat insulating material 790 also has a substantially parallelogram shape in the width direction, both end portions of the vacuum heat insulating material have a substantially triangular shape having slope portions 791A1 and 791A2, and a plurality of vacuum heat insulating materials are stacked on both sides in the width direction. In the case where they are arranged side by side, it is possible to suppress an increase in the thickness of the overlapped portions by overlapping the slope portions so as to face each other, and to suppress a decrease in heat insulation performance. In addition, since slope portions are provided at both ends in the width direction, it is possible to stack a plurality of vacuum heat insulating materials on both sides in the width direction without additional labor and work such as processing a core material separately. The degree of freedom of installation is improved, and a low-cost vacuum heat insulating material can be obtained.

  The core members 580A and 580B have a laminated structure in which sheet-like fiber assemblies continuous in the length direction are continuously wound from the inside toward the outside, and the thickness direction of the fiber assemblies 5 having the laminated structure Since it is cut into two core members at a predetermined position (for example, 1/2 position in the thickness direction), it is a simple configuration that only winds a sheet-like fiber assembly continuous in the length direction. However, a core material and a vacuum heat insulating material having substantially triangular ends are obtained. Further, if the end portion of the vacuum heat insulating material has a substantially triangular shape having the inclined surface portions 581A, 581B, 582A, and 582B, the vacuum insulating materials are stacked so that the inclined surface portions face each other when they are stacked in the length direction. The increase in the thickness of the overlapped portion can be suppressed to a small level, and the deterioration of the heat insulation performance can be suppressed. In addition, if organic fibers are used for the fiber assembly, the human body is not affected and recyclability is improved as compared with the case of using glass fibers.

  Further, since the core materials 580A and 580B have a substantially trapezoidal cross-sectional shape in the length direction, a core material and a vacuum heat insulating material in which both end portions in the width direction are substantially triangular are obtained. Further, since the cross-sectional shape in the length direction of the vacuum heat insulating material 780 is substantially trapezoidal, both end portions of the vacuum heat insulating material have a substantially triangular shape having slope portions 781A and 781B. When a plurality of layers are arranged in an overlapping manner, an increase in the thickness of the overlapped portions can be suppressed to a small extent by overlapping the slope portions so as to face each other, and a decrease in heat insulation performance can be suppressed. In addition, since slopes are provided at both ends in the length direction, it is possible to stack a plurality of vacuum heat insulating materials on both sides in the length direction without additional labor or work such as processing a separate core material. The degree of freedom of installation of the material is improved, and a low-cost vacuum heat insulating material can be obtained.

  Further, the core material 570 has a predetermined width and is provided so as to overlap the sheet-like wide fiber assembly 1JA continuous in the length direction and the wide fiber assembly 1JA, and is smaller than the predetermined width. A sheet-like narrow fiber assembly 1JB continuous in the length direction having a predetermined width, and from the inside to the outside in a state where the wide fiber assembly and the narrow fiber assembly overlap in the thickness direction Is formed in a flat plate shape having a step (difference in height in the thickness direction between the compacted portion 571 and the thinned portion 572), so that the fiber assemblies 1JA and 1JB are overlapped and wound up. Although it is only a simple structure, the core material and vacuum heat insulating material which have a level | step difference can be obtained. Moreover, by having a level | step difference in a vacuum heat insulating material, it can apply to the site | part (The site | part from which required heat insulation performance differs) where the vacuum heat insulating material of different thickness is required.

  Here, with respect to a part that requires a vacuum heat insulating material having a different thickness, for example, in the case of a refrigerator, the thickness of the vacuum heat insulating material 770 is used for heat insulation of a storage room in a plus temperature zone such as the refrigerator room 150 or the vegetable room 400. A thin thin portion 772 may be disposed, and a thick thick portion 771 of the vacuum heat insulating material 770 may be disposed for heat insulation of a storage room in a minus temperature zone such as the freezing chamber 300, the ice making chamber 500, and the switching chamber 200. In addition, in the case of a hot water storage tank of a water heater, a thick part of the vacuum insulation material is used to insulate the upper part of the tank where hot water is stored, and a lower part of the tank where hot water is stored. What is necessary is just to use the thin part of the vacuum heat insulating material. Thus, the vacuum heat insulating material which has a level | step difference can be manufactured easily, and also the heat insulation performance of apparatuses, such as a refrigerator and a water heater, improves.

  Further, the core material has a predetermined width and is provided so as to overlap the sheet-like wide fiber assembly continuous in the length direction and the wide fiber assembly, and from the predetermined width of the wide fiber assembly A narrow fiber assembly in which at least one sheet-like narrow fiber assembly that is continuous in the length direction is provided with a gap in the width direction, and a wide fiber assembly is provided. In a state where a plurality of narrow fiber aggregates arranged in the width direction are continuously wound from the inside to the outside in a state where they are stacked in the thickness direction, the gap portion forms a step. Since it is formed, it is possible to form a step or a dent in the vacuum heat insulating material at a gap portion between narrow fiber assemblies, while having a simple configuration in which the fiber assemblies are simply stacked and wound. Therefore, since the thickness of the dent portion can be reduced as a vacuum heat insulating material, the thick portion (first thickness portion), the thin thickness portion (second thickness portion and clearance portion), thickness A core material having a thick portion (third thickness portion) and a vacuum heat insulating material can be obtained. Further, for example, in a refrigerator having a plurality of storage rooms with different temperature zones, the refrigerator room 150 (plus temperature zone), the ice making room 500 (minus temperature zone), the vegetable room 400 (plus temperature zone), the freezer room 300 (from the top) If it is arranged in the order of minus temperature zone), as a vacuum insulation material, from the top, according to the size (height) of each storage room from the required heat insulation performance, the thickness is thin, thick thickness, thin thickness, thick In the present invention, the vacuum heat insulating material configured in the order of thin thickness, thick thickness, thin thickness, and thick thickness is simply wound around the core material. It can be easily provided with the configuration.

  In addition, since the vacuum heat insulating material can be bent at the gap portion of the core material, it is possible to provide a gap portion at a necessary portion of the core material, while having a simple configuration for winding up the fiber assembly. A vacuum heat insulating material that can be easily bent from the gap can be obtained.

  In addition, the heat insulating wall 800 or the refrigerator 1 of the present invention gradually decreases in thickness toward the front end side, and at least one surface in the thickness direction (for example, the upper surface 810 in FIG. 31) or the thickness direction. The outer surface 805 having a tapered surface (for example, the lower surface 820 in FIG. 31) whose one surface is inclined relative to the other surface (for example, the lower surface 820 in FIG. 31), and an end in the length direction or the width direction A substantially triangular vacuum heat insulating material (for example, 780, 790) having a slope portion (for example, 781, 791) whose thickness gradually or stepwise decreases toward the outer side, Since the vacuum heat insulating material is arranged in the outer shell so that the slope portion of the end portion is the tip side 840 in the outer shell and the slope portion of the vacuum heat insulating material faces the tapered surface side of the outer shell, the vacuum heat insulating material 7 0 up to the vicinity of the tip portion of the partition wall of the tapered it is possible to insert, it is possible to improve the insulation performance of the partition wall and the insulating wall.

  Further, in a refrigerator provided with a plurality of storage rooms and a partition wall that partitions the storage rooms (for example, the partition wall 190 in FIG. 19), the heat insulating wall (the heat insulating wall 800 in FIG. 31) is used as the partition wall. Since the vacuum heat insulating material (for example, 780, 790) is inserted to the vicinity of the front end side 840 (for example, the front side of the refrigerator) of the partition wall, a partition wall with good heat insulating performance can be obtained, and heat insulation efficiency is good and energy saving. You can get a refrigerator.

  Further, in a refrigerator having a plurality of storage rooms, a substantially triangular vacuum heat insulating material (for example, an end portion in a length direction or a width direction has a slope portion in which a thickness gradually or stepwise decreases toward an outside direction (for example, 780, 790) and a partition wall (for example, 190, 800) having a tapered surface that gradually decreases in thickness toward the front surface side and partitions the plurality of storage chambers, and an end of the vacuum heat insulating material Since the vacuum heat insulating material is disposed in the partition wall so that the slope portion (for example, 781A1, 791A1) is on the front side of the refrigerator in the partition wall and faces the taper surface of the partition wall (for example, 190, 800), Since the substantially triangular slope of the vacuum insulation material faces the tapered surface of the wall, even if the partition wall is tapered and tapered, the vacuum insulation material can be inserted to the vicinity of the front end side of the partition wall. Efficient partition wall is obtained.

  The method for manufacturing a vacuum heat insulating material according to the present invention includes a winding step of winding a fiber assembly 1J having a predetermined width wound around a substantially cylindrical raw fabric roll 1301 around a winding frame 1315 a predetermined number of times. A cutting step for cutting the fiber assembly 1J wound around the winding frame 1315, a separation step for extracting the fiber assembly wound around the winding frame 1315 a predetermined number of times, and a separation step; A forming step for forming the fiber assembly extracted from the winding frame into a flat core material, and an outer packaging material sealing step for storing the core material inside the outer packaging material having a gas barrier property and sealing the state in which the inside is decompressed In the winding step, either the original roll or the reel is continuously or stepwise in the axial direction of the rotating shaft of the original roll or the axial direction of the rotating shaft of the reel. Since it is wound on the reel while moving, it is a simple method that only winds while moving the sheet-like fiber assembly continuous in the length direction in the axial direction of the rotation axis of the roll roll or reel However, a core material and a vacuum heat insulating material having substantially triangular ends are obtained. In addition, since the end of the vacuum heat insulating material can have a substantially triangular shape having a slope portion, when a plurality of vacuum heat insulating materials are arranged in the width direction, The increase in thickness can be suppressed to a small level, and a decrease in heat insulation performance can be suppressed. In addition, if organic fibers are used for the fiber assembly, the human body is not affected and recyclability is improved as compared with the case of using glass fibers.

  Further, the separation step includes a clamping step for clamping the fiber assembly that has been wound around the winding frame a predetermined number of times with a clamp member, and tension on the winding frame of the fiber assembly clamped in the clamping step. A loose fiber assembly tension relaxation step, and a reel removal step of removing the fiber assembly, the tension of which has been relaxed in the tension relaxation step, from the reel, so that the substantially cylindrical fiber aggregate wound around the reel It is possible to obtain a flat core material in which a plurality of fiber assemblies are laminated while being a simple method of simply clamping.

  In addition, the molding step uses two clamp members to clamp the fiber assembly at two locations and move the two clamp members in substantially opposite directions to form the core material into a flat plate shape. While being a simple method of clamping a substantially cylindrical fiber assembly wound around a frame at two locations, a flat core material in which a plurality of fiber assemblies are laminated can be obtained.

(refrigerator)
FIG. 19 shows the first embodiment, and is a cross-sectional view of the refrigerator 100. In FIG. 19, the food storage room of the refrigerator 100 is refrigerated from the freezer temperature zone (−18 ° C.) below the refrigerating room 150, which is provided with a refrigerating room door 160 that is an open / close door at the top, A switching chamber 200 having a drawer door type switching chamber door 210 that can be switched to a temperature zone such as vegetables, chilled, soft frozen (−7 ° C.), and a drawer door type ice making room door 510 in parallel with the switching chamber 200 are provided. An ice making room 500, a freezing room 300 provided with a drawer door type freezing room door 310 disposed at the bottom, and a drawer door type vegetable room door 410 provided between the freezing room 300 and the switching room 200 and the ice making room 500. 400 or the like. On the front side surface of the refrigerator compartment door 160 of the refrigerator 100, there is provided an operation panel 180 composed of an operation switch for adjusting the temperature and setting of each room and a liquid crystal for displaying the temperature of each room at that time. Yes.

  On the back side of the refrigerator 100, the machine room 601 and the cooler 650 in which the compressor 600 constituting the refrigeration cycle is arranged at the lower part, and the cool air cooled by the cooler 650 are sent to the refrigerating room 150 and the switching room 200. The cooler chamber 640 in which the fan 660 and the like are disposed is provided.

  From this cooler chamber 640, a cooling air passage 680 for introducing cold air cooled by the cooler 650 into the refrigerating chamber 150 and an air passage for introducing cold air cooled by the cooler 650 into the freezer chamber 300. 690 etc. are provided.

  In addition, a control board 900 (not shown) is stored in a control board storage chamber 910 (not shown) on the back of the heat insulating wall on the back of the refrigerator compartment 150 at the top of the refrigerator 100. The control board 900 is connected to a compressor 600 and a damper that opens and closes the cooling air passage, and controls the opening and closing of the compressor 600 and the cooling air passage to control the temperature in the storage chamber such as the refrigerator compartment 150 and the freezer compartment 300. Control lead wires, power supply wires, and the like for control are provided.

  A storage case 201 is installed in the switching chamber 200, a storage case 301 is installed in the freezer compartment 300, and a storage case 401 is installed in the vegetable compartment 400, and food can be stored in these cases. .

  Here, vacuum heat insulating materials 750 and 760 are provided on the heat insulating wall between the machine room 601 and the cooler room 640 below the refrigerator 100. The vacuum heat insulating materials 750 and 760 may be used alone or may be embedded in or disposed in the foam heat insulating material 11.

  That is, the refrigerator 100 according to the present embodiment includes a refrigerator compartment 150 having an openable / refrigerated refrigerator door 160, a pull-out switching chamber door 210, a freezer compartment door 310, a vegetable compartment door 410, and an ice making compartment door 510. A plurality of storage rooms including a switching room 200, a freezing room 300, a vegetable room 400, an ice making room 500, and the like; a cooler 650 that is arranged on the back side of the storage room via a partition wall and generates cold air in the storage room; A cooler 650 and an in-compartment fan 660 that blows the cool air generated by the cooler 650 to each storage room, and a cooler that is disposed on the back side of the storage room via a partition wall and accommodates the cooler and the in-compartment fan A chamber 640, a machine room 601 that is provided in the lower or upper part of the refrigerator main body and accommodates the compressor 600 constituting the refrigeration cycle, and a first heat insulating wall provided between the machine room 601 and the cooler room 640. And machine room The second heat insulating wall provided between the storage chambers, and the organic fiber assembly 1 formed on the door of the storage chamber or the first heat insulating wall or the second heat insulating wall and formed with the organic fibers 2 in a sheet shape. The inside is sealed in a substantially vacuum state by inserting the core materials 5 and 550 having a cut portion having a cut portion whose end face is cut into the outer packaging material 4 and sealing the sealing portion of the outer packaging material 4 around the sheet. Vacuum heat insulating materials 7, 702, 750, and 760 formed in this manner.

  The vacuum heat insulating material 750 provided on the heat insulating wall between the machine room 601 and the cooler room 640 is a bent part formed by the first slit part 57, the second slit part 58 and the like as shown in FIG. 59 has a W-shaped complicated structure bent at three points. The vacuum heat insulating materials 750 and 760 are in a sheet state of a predetermined size in which the end surfaces of the core materials 5 and 550 in which the organic fiber assembly 1 formed of long fibers is laminated in the outer packaging material 4 are cut (cut). Inserted, and after drying and evacuation, the inserted portion of the outer packaging material 4 is sealed by heat welding or the like to complete.

  Further, as shown in FIG. 17, the vacuum heat insulating material 750 is bent into an L shape by a bent portion 59 formed by the first slit portion 57, the second slit portion 58, etc. It is disposed across the back wall, and is further folded into a W shape as described above and disposed across the back wall and bottom wall of the refrigerator 100. Further, as shown in FIG. 23, the vacuum heat insulating material 760 is provided with a recessed portion 760X which is a groove portion continuous in the length direction. Can be folded into a letter shape. Thus, if the vacuum heat insulating materials 750 and 760 described in this embodiment are used by being bent, the wall surface has a complicated shape like the machine room 601 that houses the compressor 600 of the refrigerator. But it can be easily applied.

  Here, in the present embodiment, a plurality of (for example, two) organic fiber aggregates 1 and continuous sheet-like fiber aggregates 1J are overlapped and stacked a plurality of times by shifting by a predetermined length (wrap margin Xb) in the width direction. If the core materials 5 and 550 are manufactured, the number of slits per one bent portion is also equal to the number of the organic fiber aggregates 1 and the continuous sheet-like fiber aggregates 1J stacked (a plurality of 3 When the sheets are shifted and overlapped, there can be three slits for one bent portion, so that the bent portion 59 (the first slit portion 57 and the second slit) even if the vacuum heat insulating material 750 becomes thicker. The part 58) can be easily folded to both sides of the sheet surface. Further, since the first slit portion 57 and the second slit portion 58 have a concave trapezoidal shape and can be formed on both sides in the thickness direction of the vacuum heat insulating material 750, for example, when the thickness is increased. However, since the first slit portion 57 and the second slit portion 58 formed on both sides of the sheet surface can be easily bent from the bent portion, the outer packaging material 4 is not torn or damaged.

  Therefore, the vacuum heat insulating material 750 of the present embodiment is predetermined at the connection portion (slit portion) between adjacent fiber assemblies of the first (organic) fiber assembly 1K or the second (organic) fiber assembly 1H. It becomes possible to bend at an angle (for example, approximately 90 degrees), and to arrange, for example, on at least two continuous wall surfaces of the heat insulating box having the top surface, both side surfaces, the back surface, and the bottom surface of the refrigerator 100. Specifically, in the case of the refrigerator 100, when it is bent into an L shape with a predetermined angle of approximately 90 degrees, (1) the side wall and the back wall, (2) the top surface wall and the back wall, (3) It can be applied to two continuous wall surfaces such as (4) bottom wall and side wall, (5) bottom wall and back wall. In addition, when folded in two places to form a U shape, (1) back wall and both side walls, (2) top wall and both side walls, (3) bottom wall and both side walls, (4) top wall, back wall It can be applied to three continuous walls such as a bottom wall.

  As described above, the vacuum heat insulating material 760 may be used instead of the vacuum heat insulating material 750. If the vacuum heat insulating material 760 is used, it can be easily bent at the recessed portion 760X in the same manner as the bent portion 59 (the first slit portion 57 and the second slit portion 58) of the vacuum heat insulating material 750. As with the first slit portion 57 and the second slit portion 58 of the heat insulating material 750, piping (condensation pipes and suction pipes) and the like are arranged and stored in the recesses 760X, and the piping can be easily insulated. Fixing and positioning of the pipe on the outer surface of the vacuum heat insulating material, which has been difficult in the past, is easy to position and fix by simply storing the pipe in the recess 760X without providing a separate pipe storage location by laser processing or the like. Can be done. Further, positioning can be performed without providing a separate fixing member. It can be easily done without using any member. Further, if a wiring (such as a control lead wire) is stored in the recess 760X, the wiring can be stored without providing a separate wiring storage location, and positioning can be performed without providing a separate fixing member. At this time, the width of the recess 760X may be set in accordance with the size of the piping or wiring to be stored. That is, the width of the recess 760X is set to a predetermined clearance XK (for example, a predetermined clearance XKab, between the first (organic) fiber assemblies 1Ka, 1Kb, 1Kc, 1Kd, 1Ke of the first (organic) fiber assembly 1K. XKbc, XKcd, XKde), and the predetermined clearance XK may be set as appropriate.

  Here, in FIG. 19, a partition that partitions the refrigerator compartment 150 provided in the upper portion, the switching chamber 200 provided in the lower portion of the refrigerator compartment 150, and the ice making chamber 500 provided in parallel with the switching chamber 200. The wall 190 has a tapered shape with a tapered surface that gradually decreases in thickness from the back side (rear side) to the front side (front side) of the refrigerator 100, and is integrated with the inner box. Alternatively, it is molded separately by injection molding or the like. That is, the partition wall 190 has a tapered shape in which the outer shape is gradually reduced in thickness toward the front end portion (front surface portion of the refrigerator 100), and the internal cavity shape is similarly the front end portion. At least a part of the taper shape gradually decreases in thickness toward the (front portion of the refrigerator 100) side. The partition wall 190 forms a heat insulating wall by sealing the urethane foam after the vacuum heat insulating materials 780 and 790 are inserted into the internal cavity.

  The tapered partition wall 190 has the same structure as the heat insulating wall 800 and will not be described in detail. However, the end side of the vacuum heat insulating materials 780 and 790 having a substantially triangular shape is the partition wall. It is inserted from the opening on the back side of the refrigerator (inner box side) so as to be positioned on the front side of the refrigerator where the thickness of 190 becomes small, and urethane foam is opened around the vacuum heat insulating materials 780 and 790 on the inner box side. The partition wall 190 is sealed so as to be filled and filled to form a heat insulating wall. The vacuum heat insulating materials 780 and 790 have a substantially triangular shape with the end portions gradually decreasing toward the outer side (the front end side), and have slope portions 781 and 791, so that the partition wall 190 has an inner portion. Even if the taper shape has a tapered surface that gradually decreases in thickness from the back side (back side) toward the tip side (front side, front side), compared to a vacuum heat insulating material whose end is not substantially triangular. Therefore, the length of the vacuum heat insulating material whose end is substantially triangular can be increased in the partition wall 190 and can be inserted up to the vicinity of the front end in the partition wall 190. Therefore, it is possible to obtain a partition wall or a heat insulating wall with good heat insulating performance up to the vicinity of the tip.

  Here, the partition wall 190 has at least a part of the outer shape before the vacuum heat insulating materials 780 and 790 and urethane foam are sealed and the inner cavity shape toward the front end (front side of the refrigerator 100). Although the case where the taper shape with a gradually decreasing thickness is formed has been described, the inner cavity shape is at least toward the front end (front side of the refrigerator 100) regardless of the outer shape. If a part of the taper shape gradually decreases in thickness, the insertion depth into which the vacuum heat insulating materials 780 and 790 are inserted can be increased, and the vacuum heat insulating materials 780 and 790 can be inserted to the vicinity of the tip. Therefore, there is an effect that the partition wall 190 and the heat insulating wall 800 with good heat insulating performance can be obtained up to the vicinity of the tip.

  Here, in the case where the vacuum heat insulating materials 780 and 790 are inserted into the partition wall or the heat insulating wall having a taper shape or a step, the tapered surface side or step side of the tapered shape that is tapered of the partition wall 190 or the heat insulating wall 800 is used. The vacuum heat insulating material 780, 790 is inserted in the partition wall or the heat insulating wall having a tapered shape or a step inside the vacuum heat insulating material 780, 790 inserted so that the slope portions 781, 791 of the vacuum heat insulating material 780, 790 face each other. Since 780 and 790 can be inserted to the vicinity of the tip, the heat insulation efficiency is improved.

  In addition, the vacuum heat insulating materials 750 and 760 of the present embodiment include heat insulation around a cylindrical container such as a compressor other than the refrigerator 100 and a hot water storage tank, an air conditioner outdoor unit, and a housing (container for a heat source of a water heater). It is needless to say that the heat insulation can be easily applied.

  In the present embodiment, the application example for the refrigerator 100 has been described. However, the present invention can also be applied to devices such as a water heater and a refrigeration / air-conditioner other than the refrigerator 100. In the present embodiment, the vacuum heat insulating material 750 having a complicated structure of “L” shape bent at one place and “W-shape” bent at three places has been described. However, “Z” bent at two places is described as “Z”. It is also possible to apply a “C” shape that is bent at two locations, a “C” shape or a “J” shape that is bent at a plurality of locations. Therefore, the vacuum heat insulating material of the present embodiment has been difficult to bend so far, and it has been difficult to mount the vacuum heat insulating material (“Z” shape, “ko” shape, “C” shape, The present invention can also be applied to locations such as “J” and “W” shapes, or locations where there are protrusions or pipes, and can be mounted on any device. Equipment such as a refrigerator equipped with the vacuum heat insulating material of the present embodiment is excellent in recyclability, has no adverse effects on the human body, and can be expected to improve heat insulating performance.

  That is, refrigerator 100 according to the present embodiment has a refrigerator compartment provided with an openable / retractable door (refrigerator compartment door 160, switching compartment door 210, freezer compartment door 310, vegetable compartment door 410, ice making compartment door 510). A plurality of storage rooms (refrigeration room 150, switching room 200, freezing room 300, vegetable room 400, ice making room 500) including 150, freezing room 300, and the like are arranged on the back side of the storage room via a partition wall for storage A cooler 650 that generates cool air in the chamber, an internal fan 660 that blows the cool air generated by the cooler 650 and the cooler 650 to each storage chamber, and a partition wall on the back side of the storage chamber, A cooler chamber 640 that houses the cooler and the internal fan, a machine chamber 601 that is provided in the lower or upper part of the refrigerator main body and houses the compressor 600 that constitutes the refrigeration cycle, a machine chamber 601, and a cooler chamber 640 A heat insulating wall provided in between, and a laminated structure of an organic fiber assembly 1 provided on a door of a storage room or a heat insulating wall, in which organic fibers 2 are formed in a sheet shape, and having a cut portion whose end face is cut Vacuum insulating materials 750 and 760 formed by inserting the core material 5 into the outer packaging material 4 and sealing the sealing portion of the outer packaging material 4 around the sheet so that the inside is sealed in a substantially vacuum state. A long fiber equal to or longer than the length of the organic fiber assembly 1 is used for the fiber 2. Accordingly, the heat insulating performance of the vacuum heat insulating materials 750 and 760 is good, the recyclability is excellent, the sealing failure is not generated, and the reliability is high. Therefore, the equipment such as the refrigerator 100 to which the vacuum heat insulating materials 750 and 760 are applied is also long-term. High performance and recyclability.

  In this example, the vacuum heat insulating materials 750 and 760 are provided on the heat insulating wall between the machine room 601 and the cooler room 640. However, the vacuum heat insulating material opening 71 may be applied to the cooling air passage. In that case, vacuum heat insulating materials 750 and 760 may be used for the partition wall, partition wall, and heat insulating wall having the cooling air passage. Moreover, you may provide in the heat insulation wall which comprises the cooler room 640. FIG.

  In addition, the heat insulating wall 800 of the present invention has tapered surfaces 821 and 822 in which the inside 830 gradually decreases in thickness toward the tip 840 side, and at least one of the upper surface 810 or the lower surface 820 is inclined compared to the other. An outer shell 805, and a vacuum heat insulating material 780 having slope portions 781 and 791 in a substantially triangular shape in which an end in the length direction or an end in the width direction gradually decreases in a stepwise manner toward the outer side, 790 and slope portions 781 and 791 at the ends of the vacuum heat insulating materials 780 and 790 are inserted on the tip 840 side in the outer shell 805, and the slope portions 781 and 791 of the vacuum heat insulating materials 780 and 790 are tapered surfaces 821 and 822 of the outer shell 805. Since the vacuum heat insulating materials 780 and 790 are arranged in the outer shell 805 so as to face each other, the vacuum heat insulating materials 780 and 790 are placed inside the tapered heat insulating wall. Adiabatic efficiency near the tip of the insertable and becomes heat insulating wall to the vicinity of the distal end portion of the heat insulating wall 800 is a step can be improved.

  Further, the refrigerator 100 of the present invention is a refrigerator having a plurality of storage rooms, and has a substantially triangular shape in which the end in the length direction or the end in the width direction gradually decreases in a stepwise manner toward the outer side. A vacuum heat insulating material having a slope portion at the substantially triangular end portion, and a partition wall having a tapered surface gradually decreasing in thickness toward the front surface side and partitioning the plurality of storage chambers, Since the vacuum heat insulating material is disposed in the partition wall so that the slope portion of the end portion of the vacuum heat insulating material is on the front side in the partition wall and faces the tapered surface side of the partition wall, the vacuum heat insulating materials 780 and 790 are provided. Can be inserted into the tapered partition wall or into the stepped partition wall up to the vicinity of the tip, so that a refrigerator with good heat insulation performance can be obtained.

  Moreover, since the end of the vacuum heat insulating material (for example, 750, 760, 770, 780, 790) has a substantially triangular shape having a slope portion, a plurality of vacuum heat insulating materials are arranged between the inner box and the outer box of the refrigerator. When arranging or arranging a plurality of sheets so as to surround the hot water storage tank of the water heater, it has a substantially triangular slope at the end in the length direction or the end in the width direction of the vacuum heat insulating material. It is possible to arrange two or more side by side so that the substantially triangular slopes face each other (or connect with another thermal insulation material such as resin between the slopes). The increase in the thickness can be suppressed to a small level, and the deterioration of the heat insulation performance can be suppressed. In addition, in the case of the vacuum heat insulating materials 780 and 790, since both end portions of the length direction end portion and the width direction end portion have substantially triangular slope portions, both the length direction end portion and the width direction end portion are provided in both directions. Since the substantially triangular slope portions can be arranged so as to face each other, the vacuum heat insulating material can be arranged without gaps over a wide range.

  1 organic fiber assembly, 1a end face, 1J continuous sheet-like fiber assembly, 1JA third (organic) fiber assembly, 1JB fourth (organic) fiber assembly, 1Je winding end, 1K first (Organic) fiber assembly, 1Ka first (organic) fiber assembly, 1 Kb first (organic) fiber assembly, 1 Kc first (organic) fiber assembly, 1 Kd first (organic) fiber assembly 1H second (organic) fiber assembly, 1Ha second (organic) fiber assembly, 1Hb second (organic) fiber assembly, 1Hc second (organic) fiber assembly, 1Hd second ( Organic) fiber assembly, 2 organic fiber, 2a residual fiber, 2b cut fiber, 2x organic fiber, 2y organic fiber, 3 air layer, 4 outer packaging material, 4a opening, 5 core material, 5a end face, 5f bent end, 5g flat plate part, 6 adsorbent, 7 true Heat insulating material, 8 spacer, 9 outer box, 10 inner box, 11 foamed heat insulating material, 12 heat insulating wall, 41 outer packaging material opening, 45 seal part, 51 core material opening, 52 through hole, 53 notch, 55 bending process Part, 56 bending part, 57 first slit part, 58 second slit part, 59 bent part, 71 vacuum heat insulating material opening part, 72 through hole, 73 notch, 75 vacuum heat insulating material opening part sealing allowance, 100 Refrigerator, 110 Embossing, 150 Cold room, 160 Cold room door, 200 Switching room, 201 Storage case, 210 Switching room door, 300 Freezing room, 301 Storage case, 310 Freezing room door, 400 Vegetable room, 401 Storage case, 410 Vegetable room door, 500 ice making room, 510 ice making room door, 550 core material, 551f bent part, 551g flat plate part, 551Je End of winding Edge, 560 Core material, 570 Core material, 571 Thick part, 572 Thin part, 570 Core material, 571 Thick part, 572 Thin part, 580, 580A, 580B Core material, 581A, 581B Slope part, 585A, 585B, 586A, 586B Longitudinal end face, 590, 590A, 590B Core material, 591A1, 591A2, 591B1, 591B2 Slope portion, 600 Compressor, 601 Machine room, 640 Cooler room, 650 Cooler, 660 Fan, 680 Cooling Air channel, 690 Air channel, 702 Vacuum heat insulating material, 750 Vacuum heat insulating material, 750a Thin walled portion, 750b Thin walled portion, 750c Predetermined thickness portion, 751 Recessed portion, 752 Recessed portion, 753 Protruding portion, 760 Vacuum heat insulating material, 760X Recessed Part, 770 Vacuum insulation, 771 Thick part, 772 Thin part, 780 Vacuum Heating material, 781A, 781B Slope portion, 790 Vacuum heat insulating material, 791A1, 791A2 Slope portion, 800 Insulating wall (insulating member), 805 shell, 810 top surface, 820 bottom surface, 821 bottom taper surface, 822 top taper surface, 830 inside ( Cavity), 840 tip, 900 control board, 910 control board storage chamber, 1301 original fabric roll, 1301a main body A, 1301b main body B, 1301c main body C, 1301d main body D, 1305 first original fabric roll, 1306 2nd original fabric roll, 1307 3rd original fabric roll, 1308 4th original fabric roll, 1309 5th original fabric roll, 1311 winding frame, 1312 circumferential member, 1313 Clamp member installation part, 1315 Rotating shaft, 1316 circumferential member holding shaft, 1316a circumferential member holding shaft, 1316b circumferential Member holding shaft, 1316c Circumferential member holding shaft, 1316d Circumferential member holding shaft, 1320 Clamp member.

Claims (12)

It is a laminated structure in which sheet-like fiber assemblies continuous in the length direction are continuously wound from the inside to the outside while moving a predetermined amount in the width direction or stepwise, and end portions in the length direction Alternatively the thickness end portions in the width direction toward the outside direction gradually or stepwise small substantially triangular core member,
A gas barrier outer packaging material that contains the core material inside and has a seal portion that is sealed in a state where the inside is decompressed, and
A vacuum heat insulating material, wherein the outer packaging material is sealed by sealing the sealing portion while the inside of the outer packaging material is in a substantially vacuum state. The core material is vacuum heat insulating material according to claim 1, wherein the cross sectional surface shape that is substantially parallelogram shaped. The core material is vacuum heat insulating material according to claim 1, characterized in that one which is cut at a predetermined position in the thickness direction of the fiber aggregate before Symbol laminated structure. Vacuum heat insulating material according to claim 1 or claim 3 wherein the core material is characterized by a cross-sectional shape is substantially trapezoidal. The core material has a predetermined width and is provided so as to overlap a sheet-like wide fiber assembly continuous in the length direction and the wide fiber assembly, and a predetermined width smaller than the predetermined width. A sheet-like narrow fiber assembly continuous in the length direction having,
The wide fiber assembly and the narrow fiber assembly are formed in a flat plate shape having a step by being continuously wound from the inside to the outside in a state of being overlapped in the thickness direction. The vacuum heat insulating material of Claim 1 or Claim 3 . The core material has a predetermined width and continuous in length and breadth of the fiber aggregate sheet which is continuous in the direction, smaller longitudinally than the predetermined width before Symbol wide fiber aggregate sheet A narrow fiber assembly, and at least one of the narrow fiber assemblies is arranged with a gap in the width direction,
The gap portion stepped from the inside in a state in which the narrow fiber aggregate are arranged more in the width direction and the fiber aggregate of the width wide are stacked in the thickness direction is continuously wound towards the outside The vacuum heat insulating material according to claim 1 or 3 , wherein the vacuum heat insulating material is formed into a flat plate shape. The vacuum heat insulating material according to claim 6 , wherein the vacuum heat insulating material can be bent at the gap portion. A heat insulating wall comprising the vacuum heat insulating material according to claim 1, wherein the vacuum heat insulating material is overlapped and connected so that the substantially triangular slope portions are in contact with each other. The inside gradually decreases in thickness toward the distal end side, and at least one surface in the thickness direction or the other surface in the thickness direction has a tapered surface inclined relative to the other surface. An outer shell and the vacuum heat insulating material according to any one of claims 1 to 7 , wherein an inclined surface portion of an end portion of the vacuum heat insulating material is the tip side in the outer shell and the vacuum heat insulating material. The heat insulating wall, wherein the vacuum heat insulating material is arranged in the outer shell so that a sloped portion faces the tapered surface side of the outer shell. The refrigerator according to claim 8 or 9, wherein the heat insulating wall is used as the partition wall in a refrigerator including a plurality of storage chambers and a partition wall that partitions the storage chambers. A refrigerator having a plurality of storage chambers, comprising: the vacuum heat insulating material according to any one of claims 1 to 7; and a tapered surface that gradually decreases in thickness toward a front surface side, and the plurality of storage chambers A partition wall for partitioning, wherein a slope portion of an end portion of the vacuum heat insulating material is a front side of the refrigerator in the partition wall, and a slope portion of the vacuum heat insulating material faces a tapered surface of the partition wall. Thus, the said vacuum heat insulating material has been arrange | positioned in the said partition wall, The refrigerator characterized by the above-mentioned. A tank and the vacuum heat insulating material according to any one of claims 1 to 7, wherein the vacuum heat insulating material abuts so that the substantially triangular slope portions face each other and surrounds the periphery of the tank. A water heater characterized by being arranged as follows.

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