JP2017051114A - Thermal insulation composite sheet and manufacturing apparatus or manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermal insulation composite sheet which is used for a roof and an outside wall of an agricultural or horticultural vinyl house and green house to save on energy and reduce cost and by which abnormal temperature rise in the green house during summer and unusual low temperature during winter or in a cold district is suppressed so as to give optimal grow environment to cultivation vegetable, fruit and the like.SOLUTION: A thermal insulation composite sheet 1 includes a thermal insulation air chamber part 4 which is formed by partitioning a space between a pair of clear films 2a, 2b in one direction of a flat surface by partition parts 3 made from light shielding resin to have a plurality of cylindrical parts. The partition part 3 is formed to be in a vertical direction or in a diagonal direction between the clear films 2a, 2b so as to control quantity of light entering into the partition part. The thermal insulation composite sheet includes line-shaped heat bonding parts 5 having a prescribed width parallel to each other at a definite interval in a direction vertical to the one direction of the flat surface between the clear films 2a, 2b. At least one of a nonwoven fabric 6, a net material 7, and a light-incident angle control sheet 8 is stuck to the clear film 2a (2b).SELECTED DRAWING: Figure 1

Description

  The present invention enables effective use as an inexpensive and efficient energy-saving measure for use as other heat retaining members such as greenhouses and greenhouses for agriculture and horticulture, heat insulation outer walls of livestock barns, etc. The present invention relates to a thermal insulation composite sheet and a manufacturing apparatus and manufacturing method thereof.

  In recent years, the productivity and quality of agricultural products have been greatly improved by using greenhouses in agriculture and horticulture. However, the consumption of energy used to control the temperature in the greenhouse has greatly affected global warming in recent years, and production prices have become unstable due to fluctuations in energy prices such as electricity, gas, and petroleum. It also contributes to the rise. In order to solve these problems, there is an urgent need to develop a thermal insulation composite sheet as a greenhouse sheet with high energy saving effect.

  By the way, greenhouses and greenhouses use a sheet of a greenhouse made of a synthetic resin such as vinyl chloride resin (PVC) or polyethylene (PE) as an outer wall to control the temperature and temperature. In addition, the temperature in the greenhouse or the greenhouse has been controlled by opening and closing each sheet or cloth by stretching the sheet doubly or stretching a cloth for blocking sunlight. Also, in cold regions and cold periods, the temperature in the greenhouse was controlled by air-conditioning using electricity, gas, or oil as a heat source in order to avoid a temperature drop. However, the inside of the greenhouse became hot under the influence of sunlight, and in winter and cold regions, it became extremely cold and could cause serious damage to plants.

  Therefore, as an agricultural sheet disposed in an agricultural greenhouse, as disclosed in, for example, Patent Document 1 and Patent Document 2, a sheet body formed of a long strip-shaped sheet material, and the sheet body A cap sheet in which a large number of caps that swell in a hollow shape are formed, and a back film that is laminated on the cap opening side of the cap film. What consists of a two-layer laminated cell sheet is provided.

  Moreover, the manufacturing apparatus of the agricultural sheet currently disclosed by these patent documents 1 and patent documents 2 is provided with three flat dies, a forming roll, and three press rolls, and each of the three flat dies is made of resin material. By extruding at a predetermined thickness, a flat cap film, a back film, and a liner film are continuously supplied. A flat cap film supplied from a flat die for a cap film is supplied to a forming roll, and the forming roll is provided with a large number of cavity holes on the outer peripheral surface. Each cavity hole is connected to a vacuum pump, and by vacuum suction of the cavity hole, a large number of caps that bulge into the cap film are formed.

  Thus, while having both the heat retaining sheet and the moisture retaining or light shielding sheet, the water absorbing property of the moisture retaining sheet is not impaired by the heat retaining sheet, and the heat retaining sheet and the moisture retaining property are not affected. A light shielding sheet can be used simultaneously or selectively, and a plurality of sheets of different materials can be easily separated, and an agricultural sheet excellent in recyclability can be provided.

JP 2013-099291 A JP 2013-150580 A

  However, in the case of the agricultural sheet disclosed in Patent Document 1 and Patent Document 2, the cap film used as the sheet body is a cap that bulges in a hollow shape, that is, a volume that is scattered in many discs due to bubbles. Since it is formed as a small moisturizing space, it is difficult to say that it is efficient enough to suppress abnormal temperature rise in the greenhouse in summer and in winter and cold regions.

  By the way, even if the sealed space inside the cap has contributed greatly to the heat insulation function, the bubble sheet is inherently held by the slight air circulation in the closed space sandwiched between the cap peripheral wall, the back film and the liner film. The heat retaining performance may be impaired by the air circulation in this portion, and it is difficult to say that the heat retaining function is functioning sufficiently.

  In addition, since the functional sheet made of a light-shielding or hygroscopic sheet, for example, a nonwoven fabric, cloth, paper, or the like is disposed so as to overlap the sheet body, sunlight incident on the front surface of the sheet body is directed outward. Since it reflects irregularly over all angles, it is insufficient as an energy saving measure. In addition, it cannot withstand strong winds or the like unless some reinforcement is applied to all surfaces of the sheet body or the functional sheet.

  Furthermore, in the agricultural sheet manufacturing apparatus disclosed in Patent Document 1 and Patent Document 2, a large number of bulges are formed by vacuum suction of a large number of cavity holes provided in the outer peripheral surface of the forming roll. Since the cap is formed on the cap film, the manufacturing cost of the cap film itself is too high.

  Therefore, the present invention was created in view of the existing circumstances as described above, and its purpose is to use it as an agricultural / horticultural greenhouse and roof / outer wall of a greenhouse to save energy and reduce costs. In addition, it is possible to provide an optimal growth environment for plants by suppressing abnormal temperature rise in the greenhouse in summer and suppressing abnormal temperature in winter and cold regions, and can sufficiently withstand strong winds. The object is to provide a heat-retaining composite sheet that is lightweight, inexpensive, and highly recyclable, and a manufacturing apparatus and manufacturing method therefor.

In order to solve the above-described problems, the present invention is a heat-insulating composite sheet 1 used as an outer wall for heat insulation inside a greenhouse or a greenhouse, and the heat-insulating composite sheet 1 is a pair of transparent sheets. The heat insulating air chamber portion 4 is divided into a plurality of cylindrical shapes by a partition wall portion 3 made of a light shielding resin along one direction in a flat surface between the films 2a and 2b.
The partition 3 may be formed by changing the angle from the vertical direction to the skew direction between the pair of transparent films 2a and 2b for adjusting the amount of incident light.
It can be provided with linear heat-sealing portions 5 that are parallel to each other at regular intervals in a direction orthogonal to one direction in a flat surface between the pair of transparent films 2a and 2b.
The nonwoven fabric 6 can be bonded to one outer surface side of the pair of transparent films 2a and 2b.
The net-like material 7 can be further bonded to the surface where the nonwoven fabric 6 is bonded.
A light incident angle control sheet 8 having an angular wave engraving process on the surface so as to reflect incident light in a certain direction can be bonded to the other outer surface side of the pair of transparent films 2a and 2b. .
An apparatus 11 for producing a thermal insulation composite sheet 1 used as a roof / outer wall for thermal insulation inside a greenhouse or a greenhouse, comprising a pair of parallel transparent resin injection ports 12a, 12b, and both transparent resin injection ports 12a, A T-die 14 having a lip structure constituted by light-shielding resin injection ports 13 arranged at equal intervals between 12b, and drawers arranged oppositely to draw out the resin injected from the T-die 14. A heat-sealing plate that can be moved forward and backward to heat-integrate the pair of transparent films 2a, 2b along a direction perpendicular to the direction of pull-out movement on the downstream side of the roll 15 and the roll 15 16 and a heat fusion mechanism 18 in which a support roll 17 for supporting the pair of transparent films 2a and 2b while sandwiching the pair of transparent films 2a and 2b at an advancing position of the heat fusion plate 16 is disposed A supply roll 19 and a laminating roll 20 for laminating at least one of the nonwoven fabric 6, the net-like material 7 and the light incident angle control sheet 8 to the transparent film 2a (2b) on the downstream side of the heat fusion mechanism portion 18. And a bonding mechanism portion 21 that is disposed opposite to each other.
The light shielding resin injection port 13 is formed by changing the angle from the vertical direction to the oblique direction with respect to the pair of flat transparent resin injection ports 12a and 12b so as to correspond to an inclined roof portion of a greenhouse or a greenhouse. Can be.
The light-shielding resin injection port 13 is inclined with respect to the vertical side surface portion of the greenhouse or the greenhouse with respect to the pair of flat transparent resin injection ports 12a and 12b having different angles in the vertical direction and the skew direction. It can be connected to the roof portion correspondingly.
A method for manufacturing a heat-insulating composite sheet 1 used as a roof / outer wall for heat insulation inside a greenhouse or a greenhouse, comprising a pair of parallel transparent resin injection ports 12a and 12b and both transparent resin injection ports 12a and 12b. By injection of each resin material by a T-die 14 having a lip structure formed by a light-shielding resin injection port 13 disposed between the pair of transparent films 2a and 2b, a partition wall portion 3 made of light-shielding resin is used. An injection step A for forming a heat insulating composite sheet 1 including a plurality of partitioned cylindrical heat insulating air chambers 4 and orthogonal to the traveling direction of each resin material on the downstream side of the injection step A A heat fusion step B for forming the heat fusion part 5 of the filaments in which the pair of transparent films 2a, 2b are integrated by heat fusion along the direction to be parallel to each other at a constant interval; Under thermal fusion process B Nonwoven 6 transparent film 2a on the side (2b), reticular material 7, and having a bonding step C for bonding at least one of the light incident angle controlling sheet 8.

In the heat insulating composite sheet 1 according to the present invention configured as described above, the plurality of cylindrical heat insulating air chambers 4 partitioned by the light blocking resin partition walls 3 are air-insulating because the inside is air. And improve the heat retention effect.
The partition wall portion 3 made of a light shielding resin is formed in a vertical direction between the pair of transparent films 2a and 2b in the vertical side surface portion of the greenhouse or the greenhouse, and in the inclined roof portion, the pair of transparent films 2a and 2a, Since the angle is changed in the oblique direction between 2b, the light amount can be adjusted according to the incident angle of sunlight into the greenhouse or the greenhouse.
Moreover, since the nonwoven fabric 6 inside the composite sheet 1 for heat retention has water absorbing water retention, dripping of condensed water droplets is prevented.
The light incident angle control sheet 8 with the surface of which the angle wave is engraved reflects the incident light in a certain direction, thereby taking in sunlight in the morning and evening and preventing strong sunlight in the daytime. Suppresses excessive temperature rise.
Since the net-like material 7 reinforces the heat-insulating composite sheet 1, it improves the durability against strong winds and the like.
In the heat insulation composite sheet manufacturing apparatus 11 according to the present invention, a transparent resin is injected from a pair of parallel transparent resin injection ports 12a, 12b of a T die 14, and between the transparent resin injection ports 12a, 12b. The light shielding resin is injected from the arranged light shielding resin injection port 13 and drawn out by the pulling roll 15, so that the light shielding resin is made of the light shielding resin along one direction in the flat surface between the pair of transparent films 2a and 2b. A thermal insulation composite sheet 1 is formed by forming a plurality of cylindrical thermal insulation chambers 4 partitioned by the partition walls 3.
The thermal fusing mechanism 18 on the downstream side of the drawer roll 15 sandwiches a pair of transparent films 2 a and 2 b between a heat-fusing plate 16 that slides and a support roll 17 that is disposed opposite to the heat-fusing plate 16. However, the pair of transparent films 2a, 2b are integrated by heat fusion along a direction orthogonal to the pulling movement direction to form a linear heat fusion portion 5 that is parallel to each other at a constant interval.
The laminating mechanism 21 on the downstream side of the heat fusion mechanism 18 is supplied with at least one of the nonwoven fabric 6, the net-like material 7, and the light incident angle control sheet 8 from the supply roll 19 to the transparent film 2 a (2 b) surface. However, at least one of the nonwoven fabric 6, the net-like material 7, and the light incident angle control sheet 8 can be attached by pressing with the bonding roll 20.
The light-shielding resin injection port 13 formed by changing the angle from the vertical direction to the oblique direction with respect to the pair of flat transparent resin injection ports 12a and 12b is an angle corresponding to an inclined roof portion of a greenhouse or a greenhouse. The partition part 3 changed to is formed.
In the method for manufacturing a heat-insulating composite sheet 1 according to the present invention, the injection step A is performed between a pair of parallel transparent resin injection ports 12a and 12b of a lip structure T-die and both transparent resin injection ports 12a and 12b. A plurality of cylindrical heat insulation chambers partitioned from each other by a light-shielding resin partition wall 3 between the pair of transparent films 2a and 2b by injection of each resin material from the light-shielding resin injection port 13 disposed in The thermal insulation composite sheet 1 provided with the portion 4 is formed.
In the thermal fusion process B, the pair of transparent films 2a and 2b are integrated by thermal fusion along the direction orthogonal to the traveling direction of each resin material on the downstream side of the injection process A.
In the bonding step C, at least one of the nonwoven fabric 6, the net-like material 7, and the light incident angle control sheet 8 is bonded onto the transparent film 2a (2b) surface.

  Since the present invention is configured as described above, it can be used as an agricultural / horticultural greenhouse and a roof / outer wall of a greenhouse to save energy and reduce costs, while suppressing abnormal temperature rise in the greenhouse in summer. It is possible to provide an optimal growth environment for plants by suppressing abnormal cold temperatures in winter and cold regions, and can withstand strong winds, etc., and is lightweight, inexpensive and rich in recyclability be able to.

  That is, in the present invention, the thermal insulation composite sheet 1 used as a roof / outer wall for thermal insulation inside a greenhouse or a greenhouse is arranged along one direction in the flat surface between the pair of transparent films 2a and 2b. This is because the heat insulation chamber 4 is divided into a plurality of cylinders by the partition walls 3 made of light-shielding resin, thereby improving heat insulation and heat insulation, Abnormal temperature rises in greenhouses and greenhouses, and abnormal cold temperatures in winter and cold regions can be prevented.

  Since the partition wall 3 is formed by changing the angle from the vertical direction to the oblique direction between the pair of transparent films 2a and 2b for adjusting the amount of incident light, a vertical side portion of a greenhouse or a greenhouse, for example, In the outer wall, formed in the vertical direction between the pair of transparent films 2a, 2b, and in the inclined roof portion, by changing the angle in the oblique direction between the pair of transparent films 2a, 2b, The amount of light can be easily adjusted according to the incident angle of sunlight into the greenhouse or the greenhouse. That is, the heat insulating composite sheet 1 having the light shielding effect and the heat insulating effect is changed in the light shielding property by changing the angle of the partition wall portion 3 made of the light shielding resin in accordance with the structure of the greenhouse house and the region where the incident angle of sunlight is different. Can be manufactured. For example, in the vertical side surface portion, if the partition wall portion 3 is formed in a direction perpendicular to the transparent films 2a and 2b between the pair of transparent films 2a and 2b, incidence in the horizontal direction by morning and evening sunlight is prevented. In the case of an inclined roof portion, if the partition wall 3 is formed by changing the angle in the oblique direction with respect to the transparent films 2a and 2b between the pair of transparent films 2a and 2b, the daytime etc. The light obliquely incident on the surface of the transparent film 2a (2b) by sunlight at a high position is partially reflected by the partition wall 3 inside. Thereby, the abnormal temperature rise in the greenhouse or the greenhouse in the daytime such as summer can be suppressed in advance.

  Since the linear heat fusion part 5 is provided parallel to each other at a constant interval in a direction orthogonal to one direction in the flat surface between the pair of transparent films 2a and 2b, A flexible heat-insulating composite sheet 1 can be formed, and can cope with the inclination and curvature of the roof, the outer wall, and other side portions surrounding the greenhouse. Further, the heat insulation and heat retention effects of the heat insulation air chamber portion 4 are sufficiently exhibited by the heat fusion portion 5, and dripping of condensed water droplets can be prevented.

  Since the nonwoven fabric 6 is bonded to the one outer surface 2a (2b) side of the pair of transparent films 2a, 2b, the heat insulating air chamber portion 4 exhibits the effect of heat insulation and heat retention of the air, By sticking to the inside of the greenhouse, it is possible to prevent dripping of condensed water droplets, and also to reinforce the heat-insulating composite sheet 1.

  Since the net-like material 7 is further bonded to the surface where the nonwoven fabric 6 is bonded, the strength against strong winds such as strong winds can be increased.

  Since the light incident angle control sheet 8 having an angular wave engraving process on the surface so as to reflect incident light in a certain direction is bonded to the other outer surface 2b (2a) side of the pair of transparent films 2a and 2b. The incident angle control sheet 8 can limit the incident light of the sunlight into the greenhouse or the greenhouse by the incident angle of sunlight. When the incident angle is low in the morning and evening, the incident light is increased. When the daytime incident angle is high, it can serve to limit the incident light and suppress the temperature rise in the greenhouse. By sticking the incident angle adjustment sheet in this way, an energy-saving greenhouse / plastic greenhouse with little change in temperature in the morning and evening can be easily made.

  An apparatus 11 for producing a thermal insulation composite sheet 1 used as a roof / outer wall for thermal insulation inside a greenhouse or a greenhouse, comprising a pair of parallel transparent resin injection ports 12a, 12b, and both transparent resin injection ports 12a, A T-die 14 having a lip structure constituted by light-shielding resin injection ports 13 arranged at equal intervals between 12b, and drawers arranged oppositely to draw out the resin injected from the T-die 14. A heat-sealing plate that can be moved forward and backward to heat-integrate the pair of transparent films 2a, 2b along a direction perpendicular to the direction of pull-out movement on the downstream side of the roll 15 and the roll 15 16 and a heat fusion mechanism 18 in which a support roll 17 for supporting the pair of transparent films 2a and 2b while sandwiching the pair of transparent films 2a and 2b at the advancing position of the heat fusion plate 16 is disposed. A supply roll 19 and a laminating roll 20 for laminating at least one of the nonwoven fabric 6, the net-like material 7 and the light incident angle control sheet 8 to the transparent film 2a (2b) on the downstream side of the heat fusion mechanism portion 18. Are provided so as to face each other, so that they are separated from each other by partition walls 3 made of light-shielding resin along one direction in the flat surface between the pair of transparent films 2a and 2b. A lightweight thermal insulation composite sheet 1 having a plurality of cylindrical thermal insulation chambers 4 can be easily and inexpensively produced.

  The light shielding resin injection port 13 is formed by changing the angle from the vertical direction to the oblique direction with respect to the pair of flat transparent resin injection ports 12a and 12b so as to correspond to an inclined roof portion of a greenhouse or a greenhouse. Therefore, the heat insulating composite sheet 1 having the light shielding effect and the heat insulation effect is shielded by changing the angle of the partition wall 3 made of the light shielding resin according to the structure of the greenhouse or the greenhouse and the region where the incident angle of sunlight is different. It is possible to manufacture by changing the properties.

  Further, the light shielding resin injection port 13 is different from the pair of flat transparent resin injection ports 12a and 12b in the vertical direction and the oblique direction, such as a vertical outer wall of a greenhouse or a greenhouse. Since it is provided corresponding to each of the side surface portion and the inclined roof portion, the thermal insulation composite sheet 1 capable of adjusting the amount of light according to the incident angle of sunlight into the greenhouse or the greenhouse is easily manufactured. be able to.

  A method for manufacturing a heat-insulating composite sheet 1 used as a roof / outer wall for heat insulation inside a greenhouse or a greenhouse, comprising a pair of parallel transparent resin injection ports 12a and 12b and both transparent resin injection ports 12a and 12b. By injection of each resin material by a T-die 14 having a lip structure formed by a light-shielding resin injection port 13 disposed between the pair of transparent films 2a and 2b, a partition wall portion 3 made of light-shielding resin is used. An injection step A for forming a heat insulating composite sheet 1 including a plurality of partitioned cylindrical heat insulating air chambers 4 and orthogonal to the traveling direction of each resin material on the downstream side of the injection step A A heat fusion step B for forming the heat fusion part 5 of the filaments in which the pair of transparent films 2a, 2b are integrated by heat fusion along the direction to be parallel to each other at a constant interval; Under thermal fusion process B Since it has the bonding process C for bonding at least any one of the nonwoven fabric 6, the net-like material 7, and the light incident angle control sheet 8 to the transparent film 2a (2b) on the side, it has a light shielding effect and a heat insulating effect. In addition, an inexpensive composite sheet 1 for heat insulation can be easily manufactured. Further, it is also possible to manufacture a heat-insulating composite sheet 1 having a light-shielding effect and a heat-insulating effect made by this manufacturing method by bonding a sheet capable of retaining water such as a nonwoven fabric 6 together with reinforcement.

  By using the cheap and light composite thermal insulation sheet 1 with the effects as described above, energy consumption is suppressed, the light material is easy to handle and there is no dripping of condensed water drops, and the temperature in the greenhouse is also low. This makes it easier to maintain a certain level, making it easier to grow in greenhouses and greenhouses, and enabling the production of cheap and high-quality agricultural products.

  In addition, the code | symbol attached | subjected in each means of the means for solving said subject and the effect of invention was attached | subjected in order to make easy reference with the part which shows each structure part described in drawing. The present invention is not limited to these descriptions, structures, shapes, and the like indicated by reference numerals and the like in the drawings.

1 is a partially cutaway perspective view of a thermal insulation composite sheet showing an embodiment for carrying out the present invention. It is a sectional view of the composite sheet for heat insulation similarly. It is sectional drawing of the nonwoven fabric sticking state of the composite sheet for heat retention similarly. It is sectional drawing containing the one part enlarged view of the incident angle control sheet sticking state of the composite sheet for heat insulation similarly. It is sectional drawing of the net-like material sticking state of the composite sheet for heat insulation similarly. BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows roughly an example of the manufacturing apparatus of the thermal insulation composite sheet which shows one form for implementing this invention. The example of a structure of T-die in the manufacturing apparatus of the heat insulation composite sheet is shown, (a) is a front view of the T-die viewed from the resin injection direction, (b) is a cross-sectional view taken along line AA ′ of (a), ( c) is a sectional view taken along line BB ′ of FIG. In FIG. 8, (a) is a front view of a T die in which a light shielding resin injection port is skewed in order to manufacture a heat insulating composite sheet for roof, and (b) is a heat insulating for roof manufactured by the T die. It is sectional drawing of a composite sheet. It is a front view of T die for manufacturing the thermal insulation composite sheet which integrated the side and roof side. FIG. 5 is a front view of a part of a T die for manufacturing a heat-insulating composite sheet in which one side, roof and the other side are integrally connected. It is sectional drawing which shows an example which used the composite sheet for heat insulation as outer walls, such as a greenhouse or a greenhouse.

  Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings. Reference numeral 1 shown in the figure is a composite sheet for heat insulation used as a roof / outer wall of a greenhouse or a plastic house, for example, For example, a synthetic resin sheet such as vinyl chloride resin (PVC), polyethylene (PE), or polypropylene resin is used to control the temperature and temperature inside a greenhouse or a greenhouse.

  For example, a roof-type or scallop-type greenhouse or a greenhouse, in which the thermal insulation composite sheet 1 according to the present embodiment is used, maintains and controls a predetermined temperature in a room where the outside air environment is shielded / blocked. It is a kind of building (house) such as a single building type or a continuous building type for cultivating and cultivating crops such as fruits and fruits. For example, a roof-type greenhouse has a structure in which steel frames such as H steel are used as pillars / frames, the frame portions of the side surface portion and the roof portion are assembled, and the outer surface thereof is covered with the thermal insulation composite sheet 1 ( FIG. 11). The greenhouse is made of wood, steel, steel pipe, etc., and the roof / outer wall is covered with the above-mentioned composite sheet 1 for heat insulation. As for the thermal insulation composite sheet 1, for example, a thin one of about 5 mm is used for a nursery bed or the like, and a thick one of about 30 to 50 mm is used as an outer wall of a greenhouse or a greenhouse. The thermal insulation composite sheet 1 may have a thickness of about 5 mm to 50 mm, but is not limited thereto.

  As shown in FIGS. 1 and 2, the heat insulating composite sheet 1 is formed by, for example, a partition wall portion 3 made of a light-shielding resin along one direction between flat transparent films 2 a and 2 b formed vertically. Partitions are provided at intervals, and the cylindrical warm air chambers 4 along one direction are arranged in parallel with each other via the partition wall 3 in a row. In addition, the partition wall portion 3 is adjusted in order to suppress an abnormal temperature rise in the greenhouse or the greenhouse by adjusting the amount of incident light, that is, adjusting the amount of light according to the incident angle of sunlight into the greenhouse or the greenhouse. It may be formed by changing the angle from the vertical direction to the skew direction between the pair of transparent films 2a and 2b. The pair of upper and lower transparent films 2a and 2b and the partition wall 3 are made of a transparent resin material injected from a pair of upper and lower parallel transparent resin injection ports 12a and 12b provided in a lip structure T die 14 of the manufacturing apparatus 11 to be described later. And a light-shielding resin material injected from a vertical light-shielding resin injection port 13 arranged at equal intervals between the transparent resin injection ports 12a and 12b (FIG. 6, which will be described later). (See FIG. 7).

  In addition, each of the pair of upper and lower transparent films 2a and 2b is used for the partition wall portion 3 by using a heat fusion mechanism portion 18 in which a heat fusion plate 16 and a support roll 17 of a manufacturing apparatus 11 to be described later are arranged to face each other. The heat-sealing part 5 is formed by thermocompression bonding. That is, in the direction orthogonal to the longitudinal direction of the cylindrical heat-retaining air chamber portion 4 along one direction in the flat surface between the transparent films 2a and 2b, for example, with a constant pitch interval of about 5 to 300 mm. A narrow line-shaped heat-sealing portion 5 is formed by heat-pressing the heat-sealing mechanism portion 18 so as to be parallel. Specifically, in the manufacturing process, a fixed interval (5 to 300 mm) is applied to a sheet extruded from the T partition 14 by using a light-shielding resin in the vertical partition wall 3 of the sheet (vertical thickness of about 5 to 50 mm). The thermal insulation composite sheet 1 having a large number of thermal insulation chambers 4 is manufactured by forming a thermal fusion part 5 of a filament having a predetermined width such as a heat seal such as a heat seal or an ultrasonic seal. Is done.

  Examples of the polyethylene resin used as the material for the transparent films 2a and 2b include high-density polyethylene (HDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and linear ultra-low-density polyethylene (LVLDPE). ), Ethylene-vinyl acetate polymer, and the like. Further, these materials may be arbitrarily mixed and used. In addition, the resin composition used as the material for the polyethylene film includes anti-blocking agents such as non-halogen higher fatty acids, higher aliphatic amides, metal soaps, lubricants such as glycerin esters, etc., depending on the use of the thermal insulation composite sheet 1. Addition agents, antioxidants such as phenolic, phosphorus, and BHT, UV absorbers such as benzophenone, benzotriazole, and HALS, inorganic and organic fillers such as talc, diatomaceous earth, and mica, antistatic agents, and surfactants can do.

  As the light-shielding resin material used as the partition wall 3, for example, a carbon resin that is a mixture of carbon black powders is used, or is calcium carbide, titanium powder, mica powder, ceramic powder, or the like used? To do. Specifically, the average particle size of the mica powder used in the present embodiment is preferably about 3 to 60 μm, and more preferably 3 to 30 μm. If the particle diameter of the mica powder is smaller than 3 μm, the scattered light transmittance tends to be small, and conversely if the particle diameter is larger than 60 μm, the total light transmittance of the film tends to be small. The bulk specific gravity of mica is 0.1 to 0.4, more preferably 0.1 to 0.3. The amount of mica added is preferably about 1 to 5 parts by weight with respect to 100 parts by weight of the resin constituting the film. If the addition amount is less than 1 part by weight, the scattered light transmittance tends to be small. Conversely, if the addition amount is more than 5 parts by weight, not only the total light transmittance of the film tends to be small, but also the film strength decreases. Since it becomes easy, it is not preferable.

  Further, as shown in FIG. 3, a non-woven fabric 6 is pasted on the surface of the above-mentioned heat-insulating composite sheet 1 facing the inside of the greenhouse or the greenhouse in order to keep the inside of the greenhouse or the greenhouse and prevent the fall of condensed water droplets. You may combine them. This nonwoven fabric 6 uses the bonding mechanism part 21 which the supply roll 19 and the bonding roll 20 of the manufacturing apparatus 11 mentioned later oppose and arrange | position one surface of the said transparent films 2a and 2b, for example, one side The transparent film 2a is attached to the surface of the transparent film 2a through a thermoplastic adhesive or the like from the flat die 40 or by heating and pressure bonding. As this nonwoven fabric 6, in order to provide a weather resistance, it is preferable that the fiber which comprises the said nonwoven fabric 6 contains the weathering agent.

  The nonwoven fabric 6 is preferably provided with a hydrophilic oil agent in order to easily retain moisture between fibers when moisture absorbed or retained is liquefied as the temperature decreases. When this nonwoven fabric 6 is fixed to the transparent films 2a and 2b, the nonwoven fabric 6 can be easily fixed by heat sealing. As a fiber constituting the nonwoven fabric 6, for example, polyethylene terephthalate in the core portion, sheath portion Although it is preferable to be comprised by the core-sheath-type composite fiber by which polyethylene was distribute | arranged to, it is not limited to these. In fixing, the polyethylene in the sheath contributes as an adhesive, and the polyethylene terephthalate in the core maintains the fiber shape without being affected by heat due to heat sealing, so the strength of the fixed part is maintained. can do. In addition, the raw material of this nonwoven fabric 6 can make it easy to recycle, for example after use disposal, by making it the same material as the heat-insulating composite sheet 1.

  As shown in FIG. 4, a light incident angle control sheet 8 is applied to the other surface 2 a side of the pair of transparent films 2 a and 2 b so as to reflect the incident light in a certain direction on the surface. You may combine them. The light incident angle control sheet 8 has a substantially sawtooth section or a substantially wedge-shaped section as shown in a partially enlarged view of a circular shape on the right side in FIG. By performing the angular wave engraving process, light in a certain direction is made difficult to enter due to reflection from the 45 ° inclined surface.

  As shown in FIG. 5, a net-like material 7 such as a net-like fiber may be further bonded to the inner side surface or the outer side surface to which the nonwoven fabric 6 is bonded, so as to increase the strength of the heat insulating composite sheet 1 as a whole. . The mesh material 7 has a mesh structure in which, for example, steel wires, synthetic resin filaments, and the like are crossed in a vertical and horizontal / slanted lattice shape, thereby increasing the overall strength of the thermal insulation composite sheet 1. In addition, this net-like material 7 uses the bonding mechanism part 21 similarly to the case of the said nonwoven fabric 6, for example, is attached to one surface of the said transparent films 2a and 2b, for example, one transparent film 2a surface, for example, thermoplastic bonding. It is attached via an agent or by thermocompression bonding. In addition, as a manufacturing method of the above-described heat insulating composite sheet 1, the non-woven fabric 6 and the net-like material 7 are bonded together as a post-process of the same manufacturing line for forming a large number of the heat-retaining air chamber portions 4, or the non-woven fabric can be formed by another attaching device. 6 and the net-like material 7 can be bonded together.

  Next, a description will be given of a manufacturing apparatus 11 for a thermal insulation composite sheet 1 used as a roof / outer wall for thermal insulation inside a greenhouse or a greenhouse, and a manufacturing method using the apparatus 11. As shown, a T-die 14 having a lip structure having a resin extrusion mechanism (not shown), a pulling roll 15, a heat fusion mechanism 18 and a bonding mechanism 21 are provided. In the manufacturing apparatus 11 of the present embodiment, the resin is extruded from the T die 14, and is partitioned by the partition wall portion 3 and the heat-sealing portion 5 between a pair of transparent films 2a and 2b formed, for example, vertically. It is assumed that the cylindrical heat insulating air chamber portions 4 are simultaneously formed in a one-line process in a state where they are arranged adjacent to each other in parallel.

  As shown in FIG. 7, the T-die 14 is arranged at equal intervals between a pair of upper and lower parallel and flat transparent resin injection ports 12a and 12b and both transparent resin injection ports 12a and 12b in a front view. The vertical light-shielding resin injection port 13 is configured by appropriately combining injection port constituent members and the like, and has a lip structure in which both ends are held by the side plate 9. In the injection step A, the transparent resin injection ports 12a and 12b are simultaneously injected so that the transparent resin material is parallel to the horizontal direction from the vertically symmetrical position when viewed from the front, and the light blocking resin injection port 13 is the light blocking resin material. Are arranged in parallel in the vertical direction in the front view so that they are parallel to each other in the horizontal direction.

  The drawer roll 15 is vertically opposed to draw out each resin injected from the T-die 14, and the position of the thermal fusion part 5 by the thermal fusion mechanism part 18 is adjusted by adjusting the rotation speed of the drawer roll 15. The interval, that is, the length of the warm air chamber portion 4 is set.

  The heat-seal mechanism 18 is provided on the downstream side of the drawer roll 15, and the pair of upper and lower transparent films along the direction orthogonal to the direction in which each resin injected from the T-die 14 is pulled out in the heat-seal process B. 2a and 2b for supporting the heat-sealing plate 16 which can be moved up and down so as to be integrated with each other and the pair of upper and lower transparent films 2a and 2b at the lowered position of the heat-sealing plate 16 The support roll 17 is arranged to face each other.

  The bonding mechanism unit 21 is configured by disposing a supply roll 19 and a bonding roll 20 so as to face each other on the downstream side of the thermal fusion mechanism unit 18. In the bonding step C, the supply roll 19 is rotatably arranged on the upper surface side of the transparent film 2a so that the nonwoven fabric 6 wound at the upper side is drawn out and bonded to the upper surface of the upper transparent film 2a. Yes. The bonding roll 20 supports the transparent film 2a so that the transparent film 2a does not sag downward when the nonwoven fabric 6 is joined to the upper surface of the transparent film 2a by the supply roll 19. In addition, the code | symbol 40 in FIG. 6 is a flat die for apply | coating a thermoplastic adhesive etc. between the upper surface of the upper transparent film 2a, and the nonwoven fabric 6. FIG. Further, such a bonding mechanism portion 21 can also be shared in the bonding of the net-like material 7 and the light incident angle control sheet 8 to the transparent films 2a and 2b.

  In addition, the bonding mechanism part 21 in this bonding process C is good also as what joins the nonwoven fabric 6 by an after-lamination system, and implements this bonding process C continuously after the shaping | molding of the composite sheet 1 for heat retention. However, the composite sheet 1 for heat retention may be once molded and, for example, temporarily stored, and then heat-sealed or bonded by another line.

  Further, as shown in FIG. 8A, the light-shielding resin injection port 13 of the T die 14 for forming the partition wall 3 corresponds to an inclined roof portion such as a greenhouse or a greenhouse having a triangular roof, for example. Accordingly, the pair of upper and lower flat transparent resin injection ports 12a and 12b are formed by changing the angle in the angle range of, for example, 30 ° to 60 ° from the vertical direction to the oblique direction in a front view. As shown in FIG. 8 (b), the composite sheet 1 for heat insulation formed by the T-die 14 is arranged in a vertical direction between a pair of flat upper and lower transparent films 2a and 2b along one direction and in front view. Is partitioned at equal intervals by a partition wall portion 3 made of a light-shielding resin whose angle is changed within an angle range of, for example, 30 ° to 60 ° in the oblique direction, and a cylindrical shape along one direction is formed through the partition wall portion 3. The warm air chambers 4 are arranged in parallel with each other.

  Further, as shown in FIGS. 9 and 10, the light-shielding resin injection port 13 of the T die 14 for forming the partition wall 3 is viewed from the front with respect to the pair of upper and lower flat transparent resin injection ports 12a and 12b. In the vertical direction and the oblique direction, different angles are assumed to be connected to the vertical side surface portion and the inclined roof portion of the greenhouse or the greenhouse. For example, as shown in FIG. 9, the light-shielding resin injection port 13 has a right half region of the T die 14, for example, from a vertical direction to a skew direction in a front view with respect to a pair of upper and lower flat transparent resin injection ports 12 a and 12 b. It is formed by changing the angle within an angle range of 30 ° to 60 °, and the left half region of the T die 14 is perpendicular to each other in the front view between the transparent resin injection ports 12a and 12b. Be placed.

  Further, as shown in FIG. 10, the light-shielding resin injection port 13 is symmetrical in the front view with the center line O of the T die 14 being a part corresponding to the zenith portion of the roof portion of the greenhouse or the greenhouse. In this way, light-shielding resin injection ports 13 having different angles in the vertical direction and the oblique direction are connected to the outer wall and the inclined roof portion which are vertical side portions of the greenhouse and the greenhouse, respectively. In the case of the illustration, the light shielding resin injection port 13 for the roof located at the left half of the right half of the front view of the T die 14 is tilted upward and the light shielding resin injection port 13 of the right half of the front half view of the T die 14 is Inclined to the right. As shown in FIG. 11, the heat-insulating composite sheet 1 formed by the T-die 14 is bridged to the right and left through a greenhouse with a triangular roof and a roof top of the greenhouse. Thereby, morning and evening sunlight is incident in a substantially horizontal direction from the side surface of the thermal insulation composite sheet 1, and between the partition walls 3 in the thermal insulation composite sheet 1 between the side surface portion of the vertical outer wall and the inclined roof portion. The room is kept warm by passing through the warm air chamber 4. On the other hand, sunlight in the daytime is incident along the substantially vertical direction from above the heat insulating composite sheet 1 and is reflected or scattered by the partition walls 3 in the heat insulating air chamber 4, thereby allowing sunlight in the daytime. This can prevent an abnormal temperature rise in the room.

  As explained above, by using the thermal insulation composite sheet 1 that has both light shielding properties and thermal insulation / heat insulation properties as the roof / outer wall of a greenhouse or a greenhouse, the thermal insulation and thermal insulation properties are high, and dripping of condensed water drops is also possible. In addition, the light incident angle control sheet 8 can construct a greenhouse / vinyl house that can save energy in the morning and evening temperature changes, and that can be kept warm in an abnormally high temperature in summer, an abnormally low temperature in winter, or a cold region. By adding the reticulate material 7, a greenhouse that can withstand strong winds can be created. In addition, recyclability can be improved by using the same material.

A ... Injection process B ... Thermal fusion process C ... Bonding process 1 ... Thermal insulation composite sheet 2a, 2b ... Transparent film 3 ... Partition wall part 4 ... Thermal insulation air chamber part 5 ... Thermal fusion part 6 ... Nonwoven fabric 7 ... Reticulated material 8 ... Incident angle control sheet 9 ... Side plate 11 ... Manufacturing apparatus 12a, 12b ... Transparent resin injection port 13 ... Shading resin injection port 14 ... T die 15 ... Draw roll 16 ... Thermal fusion plate 17 ... Support roll 18 ... Heat Fusing mechanism part 19 ... Supply roll 20 ... Laminating roll 21 ... Laminating mechanism part 40 ... Flat die

Claims (10)

  A thermal insulation composite sheet used as an outer wall for thermal insulation inside a greenhouse or a greenhouse, wherein the thermal insulation composite sheet is made of a light shielding resin along one direction in a flat surface between a pair of transparent films. A thermal insulation composite sheet comprising a thermal insulation air chamber section partitioned into a plurality of cylinders by a partition wall section.   The heat insulating composite sheet according to claim 1, wherein the partition wall is formed by changing an angle from a vertical direction to a skew direction between a pair of transparent films in order to adjust an incident light amount.   The composite sheet for heat insulation according to claim 1 or 2, further comprising linear heat-sealing portions that are parallel to each other at a constant interval in a direction orthogonal to one direction in a flat surface between the pair of transparent films.   The thermal insulation composite sheet according to any one of claims 1 to 3, wherein a nonwoven fabric is bonded to one outer surface side of the pair of transparent films.   The thermal insulation composite sheet according to claim 4, wherein a net-like material is further bonded to the surface where the nonwoven fabric is bonded.   4. The incident angle control sheet according to claim 1, wherein a light incident angle control sheet having an angular wave engraving process on the surface so as to reflect incident light in a certain direction is bonded to the other outer surface side of the pair of transparent films. Thermal insulation composite sheet.   A thermal insulation composite sheet manufacturing device used as a roof / outer wall for thermal insulation inside a greenhouse or a greenhouse, and is equidistant between a pair of parallel transparent resin injection ports and both transparent resin injection ports A T-die having a lip structure constituted by a vertical light-shielding resin injection port, a drawer roll disposed opposite to draw out the resin injected from the T die, and a downstream of the drawer roll A pair of transparent films that can be moved forward and backward together in a direction orthogonal to the drawing movement direction on the side, and the pair of the transparent films at the position where the heat sealing plate is advanced. A heat fusion mechanism part in which support rolls for supporting a transparent film while being sandwiched are arranged oppositely, and a non-woven fabric, a net-like material, a light incident angle control sheet on the transparent film on the downstream side of the heat fusion mechanism part At least any one of a supply roll for bonding the bonding roll manufacturing apparatus thermal insulation composite sheet characterized by comprising a bonding mechanism formed by opposed.   The light shielding resin injection port is formed by changing an angle from a vertical direction to a skew direction with respect to the pair of flat transparent resin injection ports so as to correspond to an inclined roof portion of a greenhouse or a greenhouse. Item 8. A thermal insulation composite sheet manufacturing apparatus according to Item 7.   The light-shielding resin injection holes are different from each other in the vertical side portion and the inclined roof portion of the greenhouse or the greenhouse with respect to the pair of flat transparent resin injection ports, the vertical direction and the oblique direction being different from each other. The apparatus for producing a heat-insulating composite sheet according to claim 7 or 8, which is provided correspondingly.   A method of manufacturing a heat-insulating composite sheet used as a roof / outer wall for heat insulation inside a greenhouse or a greenhouse, and is a light shielding material disposed between a pair of parallel transparent resin injection ports and both transparent resin injection ports. By injecting each resin material by a T-die having a lip structure constituted by a resin injection port, a plurality of cylindrical heat insulating air chambers partitioned from each other by a light-shielding resin partition wall between the pair of transparent films. An injection process for forming a thermal insulation composite sheet provided, and the pair of transparent films are integrated by heat fusion along a direction orthogonal to the advancing direction of each resin material on the downstream side of the injection process. A heat fusion process for forming the heat fusion part of the filaments parallel to each other at regular intervals, and a transparent film on the downstream side of the heat fusion process with a nonwoven fabric, a mesh material, a light incident angle control sheet At least what Method for manufacturing a thermal insulation composite sheets; and a bonding step for adjusting either one of the stick.

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