JP6021065B2 - Insulating panel and method for manufacturing the same - Google Patents

Description

  The present invention relates to a heat insulating panel in which a vacuum heat insulating material and a foam heat insulating material are accommodated in a recess of a base material having a substantially concave cross section, and a method for manufacturing the same.

  Conventionally, a heat insulating panel is known in which a vacuum heat insulating material is arranged on the inner bottom surface of a recess of a base material constituting a surface material of a heat insulating panel, and a foam heat insulating material is accommodated around the vacuum heat insulating material. (For example, refer to Patent Document 1).

JP 2008-95464 A

  However, in the process of manufacturing the heat insulating panel, if the foamed resin is foamed with the vacuum heat insulating material installed on the inner bottom surface of the recess of the base material, the vacuum heat insulating material is pressed to the inner bottom surface side by the foaming pressure, and vacuum insulation Concavities and convexities on the surface of the material are transferred to the base material, and the surface portion of the base material may be uneven. In addition, by injecting foamed resin into the recess of the base material and then installing a vacuum heat insulating material on it, the transfer of unevenness to the base material can be prevented, but in that case the foamed resin under the vacuum heat insulating material There is a possibility that the inner bottom surface of the recess is pressed by the foaming pressure, and the base material swells outward.

  The present invention has been proposed in view of such circumstances, and the purpose thereof is to transfer the unevenness of the surface of the vacuum heat insulating material to the base material, and to bulge the base material outwardly on the bottom surface of the recess. It is providing the heat insulation panel which does not have it, and its manufacturing method. It is also an object of the present invention to provide a heat insulating panel in which the vacuum heat insulating material is installed in a predetermined position in the recess of the base material without deviation or inclination, and a method for manufacturing the same.

In order to achieve the above object, a heat insulating panel according to the present invention accommodates a vacuum heat insulating material and a foamed heat insulating material obtained by foaming a foamed resin in a recess in a base material having a substantially concave cross section. in the insulating panel, between the inner bottom surface of the said vacuum heat insulator recess, a sheet-like planar shape and substantially matched planar dimension of the vacuum heat insulating material, which can be deformed by the foaming pressure of the foaming resin A pressure absorbing material interspersed with a plurality of substantially circular air layers in plan view is disposed so that the air layer is in contact with the inner bottom surface of the recess of the base material, and the foam heat insulating material is provided with the vacuum heat insulating material. The front and back sides of the material are filled.

  Further, in the present invention, it may be configured to further include a lid material that closes the opening of the recess, and a foam-based thermal insulation is provided between the vacuum heat insulating material disposed in the recess and the lid material. It may be configured to be deformable by the foaming pressure of the material and to be provided with a further pressure absorbing material having an air layer.

Further, the heat insulating panel of the present invention is the heat insulating panel in which the vacuum heat insulating material and the foamed heat insulating material obtained by foaming the foamed resin are accommodated in the recess of the base material having a substantially concave cross section. Between the heat insulating material and the inner bottom surface of the recess, the pressure-absorbing material having an air layer is arranged to be deformable by the foaming pressure of the foamed resin, and the foam heat insulating material is attached to the vacuum heat insulating material. It is set as the structure filled in the front and back sides, and the air layer of the pressure absorbing material arranged below the vacuum heat insulating material is scattered with respect to the surface of the vacuum heat insulating material, or the vacuum It is arranged in a line along the longitudinal direction of the heat insulating material, and a spacer material for suppressing compression in the thickness direction of the vacuum heat insulating material is provided .

Moreover, the manufacturing method of the heat insulation panel of this invention is a heat insulation panel which accommodates the vacuum heat insulating material and the foam type heat insulating material formed by foaming a foamed resin in the recess of the base material formed in the cross-sectional substantially concave shape. In the manufacturing method, the inner bottom surface of the recess of the base material is a sheet shape having a planar dimension substantially matching the planar shape of the vacuum heat insulating material, and can be deformed by the foaming pressure of the foamed resin. A pressure absorbing material in which a plurality of air layers are scattered so that the air layer is in contact with the inner bottom surface of the recess of the base material, and the vacuum insulation in the recess of the base material A vacuum heat insulating material installation step of installing a material, an injection step of injecting the foamed resin into a void portion in the recess of the base material, and a foaming step of foaming and molding the foamed resin injected into the recess , Is executed.

Moreover, the manufacturing method of the further heat insulation panel of this invention WHEREIN: The heat insulation panel formed by accommodating a vacuum heat insulating material and the foam type heat insulating material formed by foaming a foamed resin in the recess of the base material formed in the cross-sectional substantially concave shape. In the manufacturing method of the above, an air layer having a substantially circular shape in plan view that is deformed by the foaming pressure of the foamed resin, on the lower surface of the vacuum heat insulating material, is a sheet shape having a planar dimension substantially matching the planar shape of the vacuum heat insulating material. A plurality of pressure absorbing materials are fixed, and the vacuum heat insulating material to which the pressure absorbing material is fixed is attached to the inner bottom surface of the recess of the base material. a vacuum insulation member installation step of installing such contacts, an injection step of injecting the foaming resin into the gap portion of the recess of the base material, the foaming of foaming and molding the foamed resin injected into said recess and executes a step.

  According to the heat insulation panel which concerns on this invention, since it is set as the above-mentioned structure, it can prevent that the unevenness | corrugation of the surface of the vacuum heat insulating material mounted internally is transferred to a base material. Moreover, according to the above-mentioned structure, the installation position of a vacuum heat insulating material does not have a shift | offset | difference and inclination, ie, the heat insulation panel with uniform heat insulation can be provided. Moreover, according to the manufacturing method of the heat insulation panel which concerns on this invention, the heat insulation panel stable in the above shape surfaces and performance aspects can be produced efficiently.

It is explanatory drawing of the heat insulation panel which concerns on one Embodiment of this invention, (a) is a schematic longitudinal cross-sectional view, (b) is a fragmentary perspective view of a pressure absorption material. It is a partially broken schematic side view which shows typically an example of the apparatus used for the manufacturing method of the heat insulation panel. It is a schematic explanatory drawing of the manufacturing method (first half process), (a)-(c) is a schematic longitudinal cross-sectional view in the manufacture process of a heat insulation panel. It is schematic explanatory drawing of the manufacturing method (second half process), (a), (b) is a schematic longitudinal cross-sectional view in the manufacture process of a heat insulation panel, (c) is equipped with the vacuum heat insulating material and the foam-type heat insulating material. It is a schematic longitudinal cross-sectional view of a heat insulation panel. It is a fragmentary perspective view of the pressure absorption material used for the heat insulation panel which concerns on other embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  The heat insulation panel 1 which concerns on embodiment described below is used as a heat insulation panel for building materials used for a wall panel, a floor panel, a ceiling panel, etc. Such a heat insulation panel 1 is constructed with the back side fixed to a construction object such as a wall foundation, a floor foundation, or a ceiling foundation.

  What is necessary is just to make it set suitably the width dimension and length dimension of this heat insulation panel 1 according to the object etc. for which the heat insulation panel 1 is used. For example, when the heat insulation panel 1 is used as an interior building material, the width dimension may be about 300 mm to 900 mm, and the length dimension may be about 900 mm to 2400 mm.

  Moreover, what is necessary is just to make it set suitably the thickness dimension of this heat insulation panel 1 according to the object in which the heat insulation panel 1 is used, the required heat insulation, etc. For example, when using the heat insulation panel 1 as an interior building material, the thickness (height) dimension of the base material 10 is about 10 mm to 30 mm, and the thickness dimension of the lid member 25 (back surface material) is about 0.01 mm to 1 mm. do it.

  The base material 10 used as a frame material of the heat insulating panel 1 is formed by bending a plate material in which the front and back of a metal plate (not shown) made of, for example, a steel plate is covered with a resin layer (not shown). In addition, as a steel plate, a galvanized steel plate, a coated steel plate, a tin-plated steel plate, etc. may be used. Further, the metal plate is not limited to a steel plate, and other metals may be used.

  The thickness of the plate material obtained by coating the front and back surfaces of a metal plate (not shown) with a resin layer (not shown) is preferably about 1 mm at the maximum in order to reduce the weight.

  The synthetic resin constituting the resin layer (not shown) may be a thermoplastic resin or a thermosetting resin. The synthetic resin is not limited to vinyl chloride, and other synthetic resins may be used.

  Thus, the formation of rust can be prevented by forming the substrate 10 by providing resin layers (not shown) on the front and back of the metal plate (not shown). The base material 10 does not have to have a layer structure including a metal plate (not shown) and a resin layer (not shown) as described above. The material of the base material 10 is not particularly limited, and is manufactured using various materials. May be.

  As shown in FIG. 1 (a), the base material 10 includes a surface portion 11 having a substantially flat plate shape, and side portions 12 and 12 including side end edge portions 12a and 12a and back side edge piece portions 12b and 12b. The cross section is substantially concave.

  The side edge portion 12 a is formed so as to rise in the thickness direction of the heat insulating panel 1 from both ends of the surface portion 11 in the width direction. The back side edge pieces 12b are formed so as to face each other from the back side end (upper end in the drawing) of the side edge 12a and to narrow the width of the opening 15a. As described above, the base 10 is formed with a recess 15 in which the back surface side of the heat insulating panel 1 is opened and the back surface of the surface portion 11 is the inner bottom surface 15b.

  As shown to Fig.1 (a), in the center of the width direction in the recess 15 of the base material 10 of the heat insulation panel 1, from the inner bottom face 15b side, the pressure absorption material 20A, the vacuum heat insulating material 30, and the pressure absorption material 20B. Are arranged in order. That is, the vacuum heat insulating material 30 is disposed in the recess 15 so as to be sandwiched between the upper and lower pressure absorbing materials 20B and 20A.

  The vacuum heat insulating material 30 may be formed by vacuum-sucking the core material with a gas barrier packaging material. As a core material, it is good also as what consists of foams, such as an open-cell urethane foam using a material with comparatively low heat conductivity, a styrene foam, a phenol foam. Alternatively, as the core material, it may be made by pulverizing various foam materials, or it may be made of powder particles such as silica, alumina, pearlite, etc., and it is made of fiber bodies such as glass fiber, glass wool, rock wool, cellulose fiber, Also good. Furthermore, you may make it mix and use the above-mentioned various foams, a granular material, and a fiber body as a core material. The packaging material may be a metal film having gas barrier properties. Alternatively, a laminate having a protective layer such as a resin film on the outer layer side, a gas barrier layer such as a metal film or a metal vapor deposition layer in the middle, and a heat welding layer such as a resin film having heat weldability on the inner layer side (core material side) A film (sheet) may be used as a packaging material.

  As shown in FIG. 1 (b), the pressure absorbing materials 20A and 20B have the same shape of the air layer 21 in which a substantially circular protruding bag body is filled with air, like a bubble cushioning material used for packaging. Is a sheet material formed by interposing a plurality of dots on the plate-like base material 22. The lower pressure absorbing material 20A of the vacuum heat insulating material 30 is arranged with the air layer 21,... Facing downward, and the upper pressure absorbing material 20B is arranged with the air layer 21,. ing. The plurality of air layers 21 provided on the pressure absorbing materials 20A, 20B can be deformed by the foaming pressure of foaming resin 31 (see FIG. 3) in the process of manufacturing the heat insulating panel 1 described later. .

  The overall height dimension of the vacuum heat insulating material 30 sandwiched between the upper and lower pressure absorbing materials 20B and 20A is the depth dimension of the recess 15 of the base material 10 (from the inner bottom surface 15b to the back side of the lid member 25). It is desirable to make it approximately the same or smaller than Note that the lower pressure absorbing material 20A may have its air layers 21, 21,... In contact with the inner bottom surface 15b, or may be arranged in a state of floating via the foamed heat insulating material 32. Good.

  The number and interval of the air layers 21 of the pressure absorbing materials 20A, 20B,... (Projecting bag bodies) are determined by the flow of the foamed resin 31 when the foamed resin 31 is injected in the process of manufacturing the heat insulating panel 1 described later. It is determined as appropriate in consideration of vertical contraction. In order to facilitate the flow of the foamed resin 31 during the manufacturing process, it is desirable to arrange the air layers 21,.

  In addition, the diameter of the air layer 21 before manufacture is desirably 10 mm or less so that convection in the air layer 21 does not occur in order to improve heat insulation. In addition, in the heat insulation panel 1 after manufacture (after foaming resin 31 foams), as shown to Fig.1 (a), the air layer 21 becomes smaller than the state before manufacture (refer FIG.3 (b)). Yes. Further, the height dimension of the air layer 21 may be appropriately adjusted according to the thickness dimension of the vacuum heat insulating material 30, but is 10 mm or less, preferably 5 mm or less so that convection in the air layer 21 does not occur. Good.

  As the pressure absorbing materials 20A and 20B, those formed by a two-layer structure such as a polyethylene film are preferably used, but the material is not limited. Moreover, what is necessary is just to use the aluminum vapor deposition film with a low emissivity, in order to suppress the heat transfer by the heat radiation in the air layer 21. FIG.

  In addition, the pressure absorbing materials 20A and 20B shown in the drawings of the present embodiment are preliminarily placed on the vacuum heat insulating material 30 before the vacuum heat insulating material 30 is installed in the recess 15 of the base material 10 in the manufacturing process. Those fixed to the lower surface are used. Therefore, in the present embodiment, the planar dimensions of the pressure absorbing materials 20A and 20B substantially match the planar shape of the vacuum heat insulating material 30, but this need not be the case.

  Further, in the recess 15 of the base material 10 of the heat insulating panel 1, a foam-based heat insulating material 32 (see FIG. 4C) is further provided on the front and back surfaces of the vacuum heat insulating material 30 and in a region surrounding the vacuum heat insulating material 30. Filled. In addition, in the schematic longitudinal cross-sectional view of Fig.1 (a), in order to make main part easy to see, the filling foam-type heat insulating material 32 was not hatched.

  As the foam heat insulating material 32, a foamed resin 31 containing a foaming agent, or a curing agent or a flame retardant as required, in a synthetic resin such as urethane resin, polystyrene resin, polyethylene resin, or phenol resin is foamed. The thing which becomes. As the foamed resin 31, a foamed rubber material or an inorganic foamed material made of calcium carbonate or the like may be used. In the present embodiment, rigid foamed urethane is used as the foamed resin 31. As the rigid foamed urethane, it is desirable to use a rigid isocyanurate foam excellent in flame retardancy.

  In addition, a lid member 25 is attached to the base material 10 so as to close the opening 15 a of the recess 15. In addition, the heat insulation panel 1 is good also as a structure which does not contain the cover material 25. FIG.

  Next, the manufacturing method of the heat insulating panel 1 and the actions and effects of the pressure absorbing materials 20A and 20B will be described with reference to FIGS. In addition, illustration of the pressure absorption materials 20A and 20B was abbreviate | omitted in the schematic whole figure of the manufacturing line of FIG.

  This heat insulation panel 1 manufacturing method forms the heat insulation panel 1 by performing various processes continuously, conveying the elongate base material 10 with the conveying apparatus 50. FIG.

  That is, the method for manufacturing the heat insulation panel 1 includes a first injection step for injecting the foamed resin 31, a vacuum heat insulating material installation step, a second injection step for further injecting the foam resin, and attaching the lid member 25 to the opening of the recess 15. The lid material disposing step and the foaming step of foaming / molding the foamed resin 31 are sequentially executed.

  In this manufacturing method, as the vacuum heat insulating material 30 installed in the recess 15 of the base material 10, the one having the pressure absorbing materials 20 </ b> B and 20 </ b> A attached in advance on the upper and lower surfaces thereof is used. Of course, the pressure absorbing material installation step of installing the pressure absorbing material 20 </ b> A on the inner bottom surface 15 b of the recess 15 of the base material 10 may be executed individually before installing the vacuum heat insulating material 30. Similarly, the pressure absorbing material (upper) installation process for installing the pressure absorbing material 20B on the upper surface of the vacuum heat insulating material 30 may be executed individually after the vacuum heat insulating material 30 is installed.

  A long heat insulation panel in which a plurality of vacuum heat insulating materials 30,... Are arranged in the long base material 10 at intervals along the longitudinal direction by sequentially executing such steps. 1 is molded. And after that, a cutting process is performed and the formed long heat insulation panel 1 is cut | disconnected between the vacuum heat insulating materials 30 and 30, and each heat insulation panel 1 and 1 is shape | molded. In order to perform the cutting process, a cutting machine 55 is provided at the end of the conveying device 50. In addition, the code | symbol 56 in FIG. 2 is a conveying apparatus for conveying the cut | disconnected heat insulation panel 1 to the following process.

  In order to sequentially execute these steps, as shown in FIG. 2, the first injector 51, the vacuum heat insulating material arranging device (not shown), the second injector 52, the lid material feeder 53, and the pressing device 54 are transported. The device 50 is juxtaposed.

  In the first injection step, the air layer 21 of the lower pressure absorbing material 20A is immersed in the inner bottom surface 15b in the recess 15 of the substrate 10 to be conveyed in the vacuum heat insulating material installation step. This is a step of injecting an amount of foamed resin 31 from the first injector 51 (see FIGS. 2 and 3A).

  The 1st injection machine 51 is provided with the storage part 51a which stores the foamed resin 31, and the nozzle 51b which injects the foamed resin stored by this storage part 51a in a recess. In addition, it has the structure provided with the storage part 52a and the nozzle 52b also about the 2nd injection machine 52 mentioned later.

  In the present embodiment, while the base material 10 is transported to the first injector 51 by the transport device 50, that is, while the base material 10 is moved relative to the first injector 51, the foamed resin 31 is added. It is configured to inject into the recess 15 of the base material 10.

  The vacuum heat insulating material installation step is a step of placing the vacuum heat insulating material 30 with the pressure absorbing materials 20B and 20A fixed on the upper and lower surfaces above the foamed resin 31 at the approximate center in the width direction of the inner bottom surface 15b (FIG. 2). And FIGS. 3B and 3C). As shown in FIG. 2, the vacuum heat insulating materials 30 are sequentially arranged with a predetermined interval in the transport direction.

  In this way, by executing the first injection step and the vacuum heat insulating material installation step in this order, the air layer 21 is formed in the space between the back surface side of the vacuum heat insulating material 30 and the inner bottom surface 15b of the recess 15. The foamed resin 31 can be filled so that the foamed resin 31 contacts the outer surface of the protruding bag body.

  A 2nd injection | pouring process is a process of inject | pouring the foamed resin 31 from the 2nd injection machine 52 from on the installed vacuum heat insulating material 30 (refer FIG. 2 and FIG. 4 (a)). In this step, the injected foamed resin 31 is filled into the space between the both sides of the vacuum heat insulating material 30 and the upper surface opening surface above (surface side) of the vacuum heat insulating material 30 (upper pressure absorbing material 20B). It has become so.

  The lid material disposing step is a step of feeding the lid material 25 from the lid material feeding machine 53 and attaching the lid material 25 to the opening 15a of the base material 10 so as to close the opening 15a of the recess 15 of the base material 10 after execution of the second injection step. (See FIG. 2 and FIG. 4B).

  The lid material feeding machine 53 is disposed above the downstream side of the installation location of the second injection machine 52. The lid material feeding machine 53 feeds the lid material 25 and arranges it so as to block the upper surface of the substrate 10 to be conveyed. The lid member 25 is fixed to the upper surface of the base material 10 by pressing from above and below in the subsequent foaming process. However, the lid member 25 may be fixed to the base material 10 at the same time as the cover member 25 is disposed.

  The foaming step is a step of foaming / molding the foamed resin 31 injected into the recess 15 by the pressing device 54 (see FIGS. 2 and 4B).

  The pressing device 54 is a device that presses the base material 10 on which the lid member 25 is disposed from the vertical direction (the white arrow in FIG. 4B). The pressing device 54 includes pressing conveyors 54 a and 54 a for pressing the upper surface and the lower surface of the base material 10 from the upper side and the lower side of the transport device 50.

  Further, the pressing device 54 heats the foamed resin 31 in the recess 15 of the base material 10 to be foamed, expanded, and cured (molded) while the base material 10 is conveyed downstream by the press conveyors 54a and 54a. The heating furnace 54b is provided. In addition, it is not restricted to the aspect hardened by heating, It is good also as an aspect hardened at normal temperature.

  By the pressing operation of the pressing device 54, the lid member 25 is fixed to the opening 15 a surface (the outer surface of the back side edge pieces 12 b and 12 b) of the recess 15 of the base material 10, and the heat insulating panel 1 is further expanded by foaming of the foamed resin 31. Increase in thickness is regulated.

  In this foaming process, foaming pressure is applied to the vacuum heat insulating material 30 due to foaming of the foamed resin 31, which may cause a positional shift. However, the pressure absorbing material 20 </ b> A is disposed below the vacuum heat insulating material 30 with the base material 10 (surface portion 11), and the other pressure absorbing material 20 </ b> B is disposed between the top and the lid material 25. Therefore, the pressure absorbing materials 20A and 20B act as spacers. Therefore, the arrangement position of the vacuum heat insulating material 30 in the thickness direction of the heat insulating panel 1 can be stabilized.

  In the foaming step, depending on the amount of foamed resin 31 injected and the degree of foaming, the air layers 21,... Of the pressure absorbing materials 20A, 20B are pressed and compressed as shown in FIG. That is, the air layer 21 absorbs the pressing force due to the foaming pressure. The vacuum heat insulating material 30 is stabilized by the pressure absorption of the air layers 21..., And the surface portion 11 of the base material 10 and the lid material 25 can be prevented from bulging outward. If the air layer 21 is compressed in the vertical direction, the vacuum heat insulating material 30 may be displaced in the vertical direction, but in order to avoid this vertical contraction, the air layer 21,. -A hard spacer material (not shown) may be arranged inside.

  Thus, according to this heat insulation panel 1 and its manufacturing method, since the vacuum heat insulating material 30 is held in the recess 15 of the base material 10 without being tilted or displaced, a desirable stable heat insulation effect is obtained. Can be obtained. Further, in the manufacturing process, the pressure absorbing materials 20A and 20B act as spacers, and the vacuum heat insulating material 30 is positioned in the thickness direction so that the vacuum heat insulating material 30 does not float or sink in the foamed resin 31. It can be generally arranged at a predetermined position in the thickness direction. Even in this case, the heat insulation effect of the plurality of heat insulation panels that are continuously mass-produced can be made uniform.

  Further, since the vacuum heat insulating material 30 does not directly contact the base material 10, even when the surface of the vacuum heat insulating material 30 has irregularities, the irregularities are transferred to the surface portion 11 of the base material 10 and the lid member 25. The heat insulation panel 1 without this can be manufactured. Of course, since the arrangement position of the vacuum heat insulating material 30 is maintained, the transfer of unevenness does not occur even after manufacturing.

  Next, a heat insulating panel and a manufacturing method thereof according to another embodiment of the present invention will be described with reference to FIG. In addition, since the schematic longitudinal cross-sectional view of the heat insulation panel 1 of this embodiment is as substantially the same as FIG. 1 (a), illustration is abbreviate | omitted. Moreover, since an example figure and schematic explanatory drawing of the apparatus used for the manufacturing method of this heat insulation panel are also substantially the same as FIGS. 2-4, illustration is abbreviate | omitted.

  In this heat insulating panel, a pressure absorbing material 20 as shown in FIG. 5 is used as a pressure absorbing material. That is, the pressure absorbing material 20 includes a plurality of linear air layers 21 that extend along the longitudinal direction of the vacuum heat insulating material 30. The arrow in FIG. 5 is the longitudinal direction of the heat insulation panel, and is also the conveyance direction of the substrate 10 (see FIG. 2) in the process of manufacturing the heat insulation panel. That is, the heat insulation panel according to this embodiment is also manufactured by the same manufacturing method as that of the embodiment of FIGS.

  The pressure absorbing material 20 is a sheet material formed by arranging a plurality of air layers 21,... Having the same shape in which a ridge bag body is filled with air. The air layer 21 can be deformed by the foaming pressure of the foamed resin in the manufacturing process. The material of the sheet material is the same as that of FIG.

  Further, as shown in FIG. 5, the pressure absorbing material 20 used in the present embodiment has a prismatic hard spacer material 23 in which each air layer 21 has almost no gap in the upper and lower sides within the protruding bag body. Is arranged. Air is filled on both sides of the spacer material 23.

  Such pressure absorbing materials 20 are arranged above and below the vacuum heat insulating material 30. As in the example of FIG. 1, the pressure absorber 20 on the lower side of the vacuum heat insulating material 30 is arranged with the air layer 21... Facing downward as shown in FIG. A similar thing is arranged with the air layers 21, 21,.

  If the heat insulation panel 1 is manufactured using such a pressure absorbing material 20, the same effect as the embodiment of FIG. 1 can be obtained. Moreover, since the air layer 21 of the protrusion is formed along the conveying direction, the flow of the foamed resin can be made smooth, and the air in the recess 15 (see FIG. 1) can be expelled efficiently. In addition, when manufacturing a heat insulation panel, conveying the base material 10 (refer FIG. 1) along a transversal direction, the pressure absorption which has the air layer of the protrusion along the transversal direction of the vacuum heat insulating material 30 A material may be used.

  Further, since the air layers 21 are linearly arranged along the longitudinal direction of the vacuum heat insulating material 30, there is a possibility that the foamed resin 31 is difficult to be filled below the vacuum heat insulating material 30 in the manufacturing process. . However, as shown in FIGS. 3A to 3C, before the vacuum heat insulating material 30 with the pressure absorbing material 20 </ b> A attached to the back surface is installed in the recess 15, foaming is formed on the inner bottom surface 15 b of the recess 15. If the resin 31 is injected, such a problem can be solved.

  In addition, since the air layer 21 is linear, there is a high possibility that the air bag 21 contracts in the vertical direction due to the foaming pressure when only the air is filled in the protruding bag body. However, in the example of FIG. 5, since the spacer material 23,... Is disposed in the air layer 21,. it can.

DESCRIPTION OF SYMBOLS 1 Thermal insulation panel 10 Base material 11 Surface part 12 Side part 15 Recess 15a Opening 15b Inner bottom face 20A (Lower side) Pressure absorption material 20B (Upper side) Pressure absorption material 20 Pressure absorption material 21 Air layer 22 Plate-like base material 23 Spacer material 25 Lid material 30 Vacuum heat insulating material 31 Foamed resin 32 Foamed heat insulating material

Claims (5)

In a heat insulating panel formed by accommodating a vacuum heat insulating material and a foam heat insulating material formed by foaming a foamed resin in a recess of a base material having a substantially concave cross section,
Between the vacuum heat insulating material and the inner bottom surface of the recess, it is a sheet shape having a planar dimension substantially matching the planar shape of the vacuum heat insulating material, and is substantially circular in plan view that can be deformed by the foaming pressure of the foamed resin. the the air layer pressure absorbing material with a plurality of scattered and arranged so that the air layer is in contact with the inner bottom surface of the recess of the substrate,
The heat insulation panel characterized by filling the said foam-type heat insulating material in the front and back side of the said vacuum heat insulating material. In claim 1,
It is configured to further include a lid that closes the opening of the recess,
Between the vacuum heat insulating material disposed in the recess and the lid material, the heat insulating material can be deformed by the foaming pressure of the foam heat insulating material, and further pressure absorbing material having an air layer is disposed. panel. In a heat insulating panel formed by accommodating a vacuum heat insulating material and a foam heat insulating material formed by foaming a foamed resin in a recess of a base material having a substantially concave cross section,
Between the vacuum heat insulating material and the inner bottom surface of the recess, a pressure absorbing material having an air layer, which is deformable by the foaming pressure of the foamed resin, is disposed, and the foam heat insulating material is provided with the vacuum heat insulating material. It is configured to fill the front and back sides of the material,
The air layer of the pressure absorbing material disposed below the vacuum heat insulating material is scattered with respect to the surface of the vacuum heat insulating material, or is arranged linearly along the longitudinal direction of the vacuum heat insulating material. Or
The insulating panel you characterized in that the spacer member to prevent compression in the thickness direction of the vacuum heat insulating material is furnished. In the method for manufacturing a heat insulating panel, in which a vacuum heat insulating material and a foamed heat insulating material obtained by foaming a foamed resin are accommodated in a recess of a base material having a substantially concave cross section,
On the inner bottom surface of the recess of the base material, an air layer having a planar shape that is substantially planar with the planar shape of the vacuum heat insulating material and that is deformable by the foaming pressure of the foamed resin. A pressure absorbing material installation step of installing a plurality of scattered pressure absorbing materials so that the air layer is in contact with the inner bottom surface of the recess of the base material ;
A vacuum insulation material installation step of installing the vacuum insulation material in the recess of the substrate;
An injection step of injecting the foamed resin into a void portion in the recess of the substrate;
Method for manufacturing a thermal insulation panel, characterized in that to perform a foaming step of foaming and molding the foamed resin injected into the recess. In the method for manufacturing a heat insulating panel, in which a vacuum heat insulating material and a foamed heat insulating material obtained by foaming a foamed resin are accommodated in a recess of a base material having a substantially concave cross section,
The lower surface of the vacuum heat insulating material is dotted with a plurality of air layers having a planar shape substantially matching the flat shape of the vacuum heat insulating material and having a substantially circular shape in plan view that can be deformed by the foaming pressure of the foamed resin. The pressure absorbing material is fixed,
In the recess of the base material, a vacuum heat insulating material installation step of installing the vacuum heat insulating material to which the pressure absorbing material is fixed so that the air layer is in contact with the inner bottom surface of the recess of the base material ;
An injection step of injecting the foamed resin into a void portion in the recess of the substrate;
Method for manufacturing a thermal insulation panel, characterized in that to perform a foaming step of foaming and molding the foamed resin injected into the recess.

Images