JP4497006B2 - Vacuum insulation material core removal method, vacuum insulation material core storage method, and insulation reuse product - Google Patents

Description

The present invention takes out the method of vacuum heat insulator core material aimed at enhancing the collection material quality, process storage of the vacuum heat insulating material core, and to reuse products insulation.

  In recent years, refrigerators and vending machines equipped with vacuum heat insulating materials have been released, and they have gained popularity from the market for their energy savings. This vacuum heat insulating material is mainly composed of a glass wool core material and a gas barrier coating material, and has a heat insulating performance 3 to 10 times that of conventional urethane foam. It is attracting attention as a powerful device that can save energy while meeting the market needs of refrigerators.

  However, there is a problem in recycling a refrigerator equipped with a vacuum heat insulating material. Since vacuum insulation is mainly made of glass wool with an aluminum-deposited film and vacuum-sealed, if the entire box is crushed like the conventional refrigerator recycling method, urethane foam and glass wool can be separated after crushing. This is because the quality of the recycled material is reduced.

  Therefore, as a preferable method for recycling a vacuum heat insulating refrigerator, it is necessary to take out the vacuum heat insulating material before crushing.

  As a method of disassembling the refrigerator, a method of separating a metal part that is an outer casing of a heat insulating box and a resin part that is an inner box has been devised (for example, see Patent Document 1). However, this assumes a refrigerator in which no vacuum heat insulating material is mounted, and cannot be applied as it is when taking out the vacuum heat insulating material constituting the heat insulating layer together with the foam heat insulating material. In addition, this method can be applied only to a refrigerator having a metal outer box provided with a lubrication release layer on the inner wall, so that it is a general-purpose method even for a refrigerator not equipped with a vacuum heat insulating material. It can not be said.

In addition, reuse and recycling to refrigerators that require high heat insulation as the use of the vacuum insulation material taken out, the recovered vacuum insulation material at that time, considering that the average life of the refrigerator is 14 to 15 years It is difficult to install in a new refrigerator because it may not meet the quality standard. For this reason, it is desirable to secure a product application as a reusable vacuum heat insulating material for class B products that do not require as high a performance as a refrigerator. Up to now, there are examples of sitting products, shoes, etc. (for example, see Patent Document 2) regarding products having a heat insulating layer, but this is not an example of reusing vacuum heat insulating materials.
Japanese Patent Laid-Open No. 5-198135 JP-A-5-312411

  When recycling a refrigerator equipped with vacuum heat insulating material, if the box body is crushed together in the conventional refrigerator recycling process as shown in Fig. 12, urethane foam and glass wool cannot be separated after crushing, and the recycled material The quality will drop. If the quality of the recycled material is lost and its value is lost, the recycling rate will decrease according to the current Home Appliance Recycling Law. Therefore, it is desirable to take out the vacuum heat insulating material before crushing.

  In addition, many recent refrigerators use cyclopentane, which is a flammable gas, as a foaming agent for urethane foam. When disassembling the refrigerator and taking out the vacuum heat insulating material, it is important to consider this point and implement an explosion-proof measure or take a method that does not generate sparks.

  In addition, it is desirable that the vacuum insulation material that has been taken out is recycled as highly value-added as possible, such as “reuse”, in order to increase the value of the recycled parts and reduce the environmental burden. This is because once the vacuum insulation material once used in a product is recycled, the cost and energy are consumed for crushing, sorting, and refining it back to the raw material. This is because it consumes cost and energy to manufacture new parts. Therefore, it can be said that the reuse process in which the usable members are used as they are is preferable from the viewpoint of component cost and environment.

  However, in the case of a disassembly / removal method that uses a tool such as a rotating saw to cut the iron plate of the outer casing of the refrigerator, the cut fine metal piece adheres to the surface of the vacuum heat insulating material to be removed and reused. It becomes an obstacle in the case of. Therefore, it becomes a subject to take a disassembly method that does not generate fine metal pieces.

  In the current refrigerator recycling process shown in FIG. 12, the recovered urethane foam is recycled into a heat insulating board or the like. However, due to the recent diversification of refrigerator internal materials, that is, the use of glass and composite resins, the phenomenon that the quality of recovered urethane foam is reduced and its value is lost has arisen. This is also true for refrigerators that are not equipped with vacuum insulation. Therefore, a desirable method has also been demanded for a method of taking out urethane foam as high as possible, that is, in a highly valuable state.

  As a method for effectively using the vacuum heat insulating material collected from the waste home appliances, the core material can be reused. However, the reuse to refrigerators that require high heat insulation, considering that the average life of the refrigerator is 14 to 15 years, mounting the recovered vacuum insulation core material on the new refrigerator at that time, It may be difficult because it may not meet the quality standard. Therefore, it is desirable to secure a product application as a reusable vacuum heat insulating material for class B products that do not require as high a performance as a refrigerator. In the past, products that had been thought not to be mounted due to the high cost of vacuum insulation materials may be cost-effective even if they are reused, so devise applicable products That is also an issue.

  In order to solve the above problems, the present invention provides a method for disassembling a refrigerator / vacuum insulation material free from sparks and fine metal pieces and a method for recovering urethane foam with high purity, and further collecting the vacuum insulation The purpose is to provide a product as an application when the core material is reused.

  In order to achieve the above object, the following means were used.

The invention described in the first claim of the present application, to the vacuum heat insulating material of the heat-insulating core material formed by vacuum-sealed into the film, press cutting surface of the insulating box body constituting the refrigerator, turning the cut portion of the face Open the outer cover film of the vacuum heat insulating material taken out by pulling up and removing the heat insulating material mounted in the heat insulating box, and then add the weight of the core material to the opened surface, that is, the surface where the core material is exposed. Vacuum insulation, characterized by pressing a flat plate with sufficient strength against it, inverting the vacuum heat insulating material and the flat plate in that state, placing the core on the flat plate, and finally removing the jacket film from the core The present invention relates to a method for taking out a core material.

  When the core material of the vacuum heat insulating material taken out from the refrigerator is reused, it is desired that the shape and form thereof are not changed, that is, not damaged. In particular, glass wool, which is often used as a core material for vacuum heat insulating materials in recent years, is easily broken by bending or pulling, and therefore needs to be handled carefully when reused. According to the present invention, the core film can be taken out by opening the outer cover film in a state where the core material is held by a flat plate, and the core material can be prevented from being bent or pulled. Thereby, the vacuum heat insulating material core material with little shape deterioration can be provided for reuse. The material of the flat plate is not limited as long as it has sufficient strength to withstand the weight of the core material, and can be cardboard, a wooden plate, a plastic plate, a metal plate or the like.

  In addition, when transporting the vacuum insulation core material taken out in the state of being held by a flat plate for reuse, it is arranged so that the flat plate and the core material are stacked alternately over several stages and placed in a box or basket. Is efficient and desirable. In addition, this can prevent the core material from being pulled or bent unnecessarily during the transfer.

  As described above, the method of taking out the heat insulating material from the refrigerator according to the present invention is safe without the occurrence of sparks and without generating fine metal pieces that hinder the reuse of the vacuum heat insulating material core material. The vacuum heat insulating material, which is a material, can be taken out from the refrigerator, and can be stored and transported without damaging the taken out core material. In addition, the foamed urethane foam, which is a heat insulating material, can be taken out in a high purity state, and can be reused for a heat insulating board or the like. In addition, in the heat-insulating material reuse product according to the present invention, it is possible to effectively utilize resources by forming a heat-insulating layer that satisfies the required heat-insulating performance by reusing the past vacuum heat-insulating material core material taken out from the refrigerator. Can do.

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

  FIG. 1 is a schematic cross-sectional view of a vacuum heat insulating material 101 mounted on a refrigerator in an embodiment of the present invention. Reference numeral 102 denotes an outer coat film having gas barrier properties, 103 denotes a glass fiber core, and 104 denotes an adsorbent that absorbs moisture and oxygen. The end portion 105 of the covering film 102 is sealed by polymer welding of the heat sealing layer, and the inside of the covering film 102 is in a state close to a vacuum.

In this embodiment, the core material 103 is a glass fiber and the main component is Si02, and the shape is an aggregate of fibers having an average diameter of about 3 to 5 μm and an average length of about 50 mm. It was hardened with an inorganic binder and had a thickness of about 14 mm and a density of about 250 kg / m ³ .

  The outer cover film 102 has a surface protective layer of polyethylene terephthalate on one side, an intermediate layer made of aluminum foil, and a heat sealing layer made of high-density polyethylene. The other side has a surface protective layer. Is a polyethylene terephthalate, the intermediate layer is a film layer obtained by vapor-depositing aluminum inside the ethylene-vinyl alcohol copolymer resin composition, and the heat seal layer is a laminate film having a thickness of about 35 μm made of high-density polyethylene.

  When the core material 103 is wrapped with the envelope film 102 and vacuum-sealed, the core material 103 is pressurized and compressed by the envelope film 102, so that the thickness of the vacuum heat insulating material is about 12 mm. Further, in this embodiment, the vacuum heat insulating material is manufactured so that the degree of vacuum is about 4 Pa (0.03 Torr), and the adsorbent 104 is a gas-permeable solid powder mixture made of calcium chloride and magnesium chloride. It was wrapped in a paper bag.

  FIG. 2 is a schematic diagram of the refrigerator equipped with a vacuum heat insulating material disassembled in the embodiment of the present invention, FIG. 2 (A) is a schematic diagram viewed from the front, and FIG. 2 (B) is a schematic diagram viewed from the back. It is. This refrigerator is of a 401 liter class, and the refrigerator door is of the type that opens to the right, that is, the hinge is on the right front. Further, this refrigerator was a model using isobutane as a refrigerant and cyclopentane as a foaming agent for urethane foam. In the refrigerator 201 according to the present embodiment, the vacuum heat insulating material 101 includes a top surface 202, a back surface 203, a right side surface 204, a left side surface 205, a partition wall (barrier) portion 206, a bottom surface 207, a refrigerator compartment door 208, and a freezer compartment door 209. A total of 8 models were installed, one at each location. As shown in Table 1, the vacuum heat insulating material is attached to the inner surface of the outer iron plate of the heat insulating box with the top surface 202, the back surface 203, the right side surface 204, and the left side surface 205 with an adhesive. The inner partition wall (barrier) portion 206 and the bottom surface 207 are fixed to the resin surface of the inner box of the heat insulation box with an adhesive, and in the refrigerator compartment door 208 and the freezer compartment door 209, the door It is arranged to be wrapped in the foamed urethane foam inside.

  Next, regarding the disassembly of the refrigerator 201 and the method of taking out the vacuum heat insulating material 101 in this embodiment, the procedure is shown in a flowchart in FIG. 3A, and the schematic diagram is shown in FIG. First, the drawer doors and internal parts are removed from the standing refrigerator 201. Although there are polystyrene cases, shelf boards, trays, and the like as the internal parts, although not shown in the figure, it is desirable to remove them first because they interfere with the dismantling work. It is also desirable to remove the freezer compartment door 209, which is a drawer-type door.

  Next, the refrigerator compartment door 208 is opened, the resin part on the inner box surface of the heat insulating box body in which the vacuum heat insulating material of the partition wall part (barrier part) 206 is disposed is cut with a cutter knife, and the resin part is hollowed out. And the vacuum heat insulating material 101 bonded to the resin surface are taken out. Next, in the same manner, the resin portion of the bottom surface portion 207 is pushed through with a cutter knife, and the resin portion is cut out to take out the vacuum heat insulating material 101 bonded to the resin portion and the resin surface.

  Then, tilt the refrigerator body to the right side when viewed from the front and tilt it down. By doing so, it is possible to easily take out the vacuum heat insulating material 101 on each iron plate surface, and it is possible to easily take out the vacuum heat insulating material 101 arranged in the cold room door 208 without removing the door of the cold room.

  Next, the refrigerator compartment door 208 is opened and pressed so that the door is in contact with the floor surface of the work place, and the resin surface corresponding to the portion where the vacuum heat insulating material 101 inside the door is disposed is cut off with a cutter knife. The inside of the foamed urethane foam is hollowed out and the vacuum heat insulating material 101 embedded is taken out.

  Further, the resin surface corresponding to the portion where the vacuum heat insulating material 101 is disposed is pushed through the freezer compartment door 209 previously taken out with a cutter knife, and the resin portion and the foamed urethane foam are hollowed out and embedded. The vacuum heat insulating material 101 is taken out.

  Subsequently, the auto chisel 401 is used to cut the outside of the portion corresponding to the vacuum heat insulating material arrangement of the outer iron plate on the top surface 202 and the left side surface 205 by vibration pushing. When the end portion of the cut iron plate is turned up with a bar (not shown) or the like, the vacuum heat insulating material 101 is bonded to the iron plate portion and can be taken out together with the iron plate.

The auto chisel 401 used here is an A302 type manufactured by Nitto Kohki Co., Ltd., with an air pressure of 0.59 MPa, a reciprocation of 2600 / min, and an air consumption of 0.3 m ³ / min. It was 5 to 6 kgf / cm ² . FIG. 4A shows a schematic diagram of the auto chisel 401. The auto chisel 401 has a structure in which the leading chisel portion 402 can be detached from the main body 404 through the connection spring portion 403. The air sent from the pneumatic hose 405 is changed to energy that vibrates the chisel section 402 in the main body 404 by pressing the switch 406. The tip 407 of the chisel portion 402 is a tip having a T-shaped cross section so that a groove can be easily formed on the surface of the workpiece having a flat surface. FIG. 4B shows a cross-sectional view of the chisel portion 402. The chisel section 402 is made of hardened iron, the guide width is about 15 mm, the blade width of the cutting blade is about 2 mm, and the blade length is about 4 mm. .

  After the vacuum heat insulating material 101 on the top surface 202 and the left side surface 205 is taken out, the refrigerator main body 201 is then rotated forward so that the front door portion is in contact with the floor. In this state, the vacuum heat insulating material 101 on the back surface 203 is taken out by pressing the outer iron plate with the auto chisel 401 and turning it up in the same manner as before.

  Subsequently, the refrigerator main body 201 is rotated again to the front side so that the right side surface 204 faces upward. Also here, the vacuum heat insulating material 101 on the right side surface 204 is taken out by pressing the outer iron plate with the auto chisel 401 and turning it up in the same manner as before.

  As described above, the eight vacuum heat insulating materials 101 can be taken out from the refrigerator main body 201. In this example, it took about 30 minutes to disassemble and take out the vacuum heat insulating material 101. However, it is possible to reduce the time by developing jigs that help further improve work efficiency and invert the refrigerator. It is done. In addition, when the refrigerator compartment door 208 of the refrigerator main body 201 is opened to the left, when the main body 201 is tilted before the vacuum heat insulating material 101 of the refrigerator compartment door 208 is taken out, it is tilted to the left as viewed from the front. Efficient dismantling can be performed in the same manner as in the embodiment. Further, in the present embodiment, the model was equipped with eight vacuum heat insulating materials 101, but even with other number of mounting models, the above disassembly method can be used in a similar manner depending on the mounting location. The vacuum heat insulating material 101 can be taken out. Furthermore, although the auto chisel was used in the present embodiment, other tools may be used as long as the cutting tool is a type of vibration push-cutting that does not generate a spark when cutting an iron plate and does not generate fine chips. .

  Subsequently, as shown in FIG. 5, the chisel portion of the auto chisel 401 was replaced with an iron blade 501 that was also quenched. The blade 501 has a structure with a taper so that the width is about 200 mm and the thickness of the tip is about 2 mm. The refrigerator main body 201 after removing the vacuum heat insulating material 101 exposes the foamed urethane foam on both side surfaces and the back surface 203. By pressing the blade 501 connected to the auto chisel 401 against the exposed foamed urethane foam and vibrating the blade 501, the foamed urethane foam can be peeled off and recovered in a relatively high purity state. However, since cyclopentane used as a foaming agent is released from the inside of the foamed urethane foam at this time, it is desirable to carry out in a well-ventilated place. Since the foamed urethane foam thus taken out has a high purity, it can be effectively used again as a raw material for a heat insulating board or the like. In addition, regarding products using chlorofluorocarbons as the foaming agent, it is necessary to collect the heat-insulated chlorofluorocarbon by sucking gas at the time of collecting the foamed urethane foam.

  Next, in order to effectively utilize the vacuum insulation material 101 that was taken out, an operation was performed in which the outer cover film 102 was opened and the core material 103 was taken out. FIG. 6 shows a schematic diagram of this core material taking-out operation. The core material 103 is desirably taken out so as not to be damaged as much as possible for reuse. Therefore, the core film 103 is exposed after the outer cover film 102 portions on the outer four sides of the core material 103 of the vacuum heat insulating material 101 are cut and peeled off with a cutter knife so that the core material 103 is exposed. A cardboard flat plate 601 is pressed against the surface, and the flat plate 601 and the vacuum heat insulating material 101 are inverted while being integrated. Next, the remaining covering film 102 is peeled off while the vacuum heat insulating material 101 is supported by the flat plate 601. By doing so, the core material 103 that is easily deformed can be taken out from the covering film 102 while maintaining the flatness as much as possible.

  Even if the vacuum heat insulating material 101 is taken out integrally with the iron plate or the resin surface, first, the outer film 102 on the four outer sides of the core material 103 of the vacuum heat insulating material 101 is cut off with a cutter knife. After the core material 103 is exposed, the corrugated cardboard flat plate 601 is pressed against the surface on which the core material 103 is exposed, and the flat plate 601 is bonded to the vacuum heat insulating material 101 and the vacuum heat insulating material 101. By reversing the iron plate or resin portion that is integrated, it is possible to remove the outer cover film 102 and the iron plate or resin portion adhered thereto from the core material 103 in the same manner.

  Further, the flat plate 601 only needs to have sufficient strength to support the weight of the core material 103, and may be made of wood, plastic, or metal other than cardboard. In the present embodiment, the core material 103 is the largest, 470 mm × 1370 mm × thickness 14 mm, and the weight was about 2 kg. Therefore, even the corrugated cardboard of 500 mm × 1400 mm × thickness about 6 mm could be sufficiently supported. .

  Next, the core material 103 and the flat plate 601 taken out were placed in a cardboard box 602. In order to efficiently transport a plurality of core materials 103 while protecting them, the flat plates 601 and the core materials 103 are alternately stacked and placed in a cardboard box 602. By doing so, storage and transportation are possible without impairing the flatness of the core material 103.

  The vacuum heat insulating material core 103 collected as described above is vacuum-sealed again with a new outer cover film 102, whereby the vacuum heat insulating material 101 whose core material is a reused product can be produced.

  In this embodiment, the core material 103 taken out for reuse is cut into an appropriate size, dried at about 140 ° C. for 1 hour, and then vacuum-sealed with a new envelope film 102 to produce a vacuum heat insulating material 101. did. The pressure at the time of vacuum sealing was set to about 4 Pa (0.03 Torr) or less, and an electric heater was used for sealing the outer cover film 102.

  The reusable vacuum heat insulating material 101 produced in this way was a sample having an outer shape of 200 mm × 300 mm and a thickness of about 12 mm, and the heat conductivity indicating heat insulating performance was 0.0021 W / m · K. The thermal conductivity is a value measured using a measuring device (HC-074 manufactured by Eihiro Seiki Co., Ltd.) using a heat flow meter method. With this level of thermal insulation performance, it can be used again as a vacuum thermal insulation material for refrigerators even from the current specifications.

  However, the average life of a refrigerator in recent years is said to be about 14 to 15 years, and the vacuum heat insulating material 101 taken out from the collected refrigerator is the same heat insulating property as the vacuum heat insulating material used in the new product refrigerator at that time. It is not certain whether or not This is because there is a possibility that more highly heat-insulating vacuum insulation will be developed in the future due to technological development. Therefore, in this embodiment, the reuse of the vacuum heat insulating material 101, which is a reusable product, in a product having a heat insulating layer such as an electric kotatsu table, a bathtub, a lid of a bathtub, a cold boot, or a cooler box, was examined. Conventionally, these products are not required to have high heat insulation properties as compared with refrigerators, and have been insulated only with urethane foam or the like for cost reduction. However, as in the present embodiment, the vacuum heat insulating material taken out from the waste home appliances can be obtained relatively cheaply, and there is a cost merit for mounting on the product. Furthermore, it can appeal to the environment by appealing to consumers that the resources are being used effectively.

  Regarding bathtubs, in the case of unit baths, which have been increasing in recent years, bathtubs are often made of hard-coated resin, but little heat insulating material is attached to the outside. Therefore, as shown in FIG. 7, a vacuum heat insulating material 101 whose core material is a reused product is attached to the flat portion of the unit bath tub 701. By carrying out like this, with respect to the considerable part of the bathtub 701, the heat retaining property by vacuum insulation can be ensured, and the speed at which hot water cools can be delayed.

  Similarly, as for the lid 702 of the bathtub, currently common ones are made of resin, polystyrene foam, or urethane foam, but this is changed to a vacuum heat insulating material 101 whose core material is a reuse product. Thermal insulation performance can be improved. Note that general foamed urethane foam often has a thermal conductivity of about 0.03 W / m · K or more indicating heat insulation performance. Therefore, it can be expected that the heat insulation performance is improved by 10 times or more by employing the vacuum heat insulating material 101. However, the vacuum insulation material of the present example is soft and easy to tear, so when used as a bathtub lid, the outer periphery of the vacuum insulation material is protected by molding and enclosing it with urethane foam. It is necessary to make it difficult for external force to be applied to the film.

  Regarding electrical kotatsu, as shown in FIG. 8, by disposing the vacuum heat insulating material 101 whose core material is a reused product under the table, it is possible to prevent the heat inside the kotatsu from escaping through the table. it can.

  Regarding cold protection shoes, as shown in FIG. 9, by creating a vacuum heat insulating material 101 whose core material is a reused product in a shape according to the aspect of the foot, sandwiching it in the fabric inside the shoe and mounting it, Extremely warm shoes can be created.

  With regard to the cooler box, as shown in FIG. 10, a high-performance cooler box with less heat entering and exiting by arranging the vacuum heat insulating material 101 whose core material is a reused product on the flat portion of the box. I can do it.

  Products equipped with the vacuum heat insulating material 101 reused from these core materials can be appealed to consumers as positioned as environmentally friendly products, and have desirable advantages for the future.

  Moreover, even if the product is a product having a heat insulating layer even if it is a product other than an electric kotatsu table or bathtub, a bathtub lid, a winter shoe, or a cooler box, a vacuum in which the core material of the present embodiment is a reuse product. A heat insulating material 101 can be mounted.

  Here, as a summary, FIG. 11 shows a flowchart related to resource reuse from dismantling and taking out in the embodiment of the present invention. Compared with FIG. 12 of the conventional example, it is possible to effectively use resources by taking out part of the vacuum heat insulating material 101 and the foamed urethane foam before crushing and reusing or recycling them in a separate process.

  In this example, a vacuum heat insulating material using glass fiber as a core material was used. However, a core material made of urethane foam recycled material, resin, amorphous, or other material may be used as long as it is solid. It can be implemented. Moreover, although the example regarding taking out the vacuum heat insulating material from the refrigerator was given in the present embodiment, other electric and electronic products having a heat insulating box body on which the vacuum heat insulating material is similarly mounted, for example, vending machines, food warmers, gold The same applies to mold temperature controllers.

  Currently, there are about 40-50 waste home appliance processing facilities (traders) in Japan. When the vacuum heat insulating material-equipped refrigerator is crushed in the conventional recycling process, the glass fiber of the core material is mixed with other recovered materials such as urethane, thereby reducing the value. According to the method for taking out the vacuum heat insulating material from the refrigerator according to the present invention, the vacuum heat insulating material can be efficiently taken out before crushing, and the taken out vacuum heat insulating material can be effectively utilized as reuse. . This enables efficient and economical recycling at each facility.

  The heat insulation performance of the vacuum heat insulating material is higher than that of general foamed urethane foam. For this reason, vacuum insulation is used not only for refrigerators and vending machines, but also for other products that require heat insulation, such as temperature controllers, heating furnaces, and heat insulation devices. There is a possibility that it will be deployed. By reusing the core material according to the present invention, it is possible to contribute to people's lives by adding a comfortable and energy-saving heat-insulating function even to lower-priced products.

  In addition, the promotion of reuse of the core material by the vacuum heat insulating material arrangement method of the present invention and the reduction of the amount of industrial waste glass by the reuse of the core material can contribute to the establishment of an industrial system with a reduced environmental load, and the development of an environment-symbiotic industry Can contribute.

  In addition, as in this embodiment, the idea of taking out and reusing (reusing) the part after use of the product is important for future industrial development as a technical idea for reducing the environmental load.

Cross-sectional schematic diagram of the vacuum heat insulating material in the embodiment of the present invention (A) Schematic diagram from the front of the refrigerator equipped with a vacuum insulation material in the embodiment of the present invention (B) Schematic diagram from the back of the refrigerator equipped with a vacuum insulation material in the embodiment of the present invention (A) The flowchart which shows the vacuum heat insulating material taking-out operation in embodiment of this invention (B) The schematic diagram which shows the vacuum heat insulating material taking-out operation in embodiment of this invention (A) Schematic diagram of an auto chisel used for taking out the vacuum heat insulating material in the embodiment of the present invention (B) A diagram showing a cross-sectional shape of the chisel part of the auto chisel Schematic diagram of a blade for removing foamed urethane foam in an embodiment of the present invention The schematic diagram which showed the vacuum heat insulating material opening in the embodiment of this invention, and the taking-out method of a core material The schematic diagram which showed the bathtub and bathtub lid in embodiment of this invention The schematic diagram which showed the electric kotatsu in embodiment of this invention The schematic diagram which showed the winter shoes in embodiment of this invention The schematic diagram which showed the cooler box in embodiment of this invention In the embodiment of the present invention, a flowchart related to resource recycling from refrigerator disassembly removal Flowchart related to resource recycling from refrigerator disassembly removal in the conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Vacuum heat insulating material formed by vacuum-sealing a heat insulating core material in a film 102 Vacuum coat material covering film 103 Vacuum heat insulating material core material 104 Dry adsorbent 105 Heat seal part of vacuum heat insulating material 201 Refrigerator equipped with vacuum heat insulating material Main body 202 Top surface of refrigerator 203 Rear surface of refrigerator 204 Right side surface of refrigerator 205 Left side surface of refrigerator 206 Partition wall (barrier) portion of refrigerator 207 Bottom surface of refrigerator 208 Refrigerating chamber door portion 209 Refrigerating chamber door portion 401 Auto chisel Reference numeral 402 Reference numeral 403 Connection spring part 404 Auto chisel body part 405 Air hose 406 Switch part 407 Leading edge 501 Blade 601 Corrugated cardboard flat plate 602 Corrugated cardboard box 701 Bathtub 702 Bathtub lid

Claims (4)

The heat insulating material is a vacuum heat insulating material obtained by vacuum-sealing a heat insulating core material in a film . The surface of the heat insulating box constituting the refrigerator is pushed through, the cut portion of the surface is turned up, and the heat insulating box is mounted in the heat insulating box. Open the outer cover film of the vacuum heat insulating material taken out by taking out the heat insulating material , and then press a flat plate with sufficient strength against the weight of the core material on the opened surface, that is, the surface where the core material is exposed. A method for taking out the vacuum heat insulating material core material, wherein the vacuum heat insulating material and the flat plate are reversed in that state, the core material is placed on the flat plate, and the outer cover film is finally removed from the core material. The vacuum heat insulating material core material from which the outer cover film has been removed by the vacuum heat insulating material take-out method according to claim 1 is placed on a flat plate, and a plurality of core materials and flat plates are alternately stacked in a box or A method for storing a vacuum heat insulating material core material, which is stored in a basket. A heat insulating material reuse product comprising a reused vacuum heat insulating material produced by vacuum-sealing the core material taken out by the method of claim 1 with a new outer cover film. The heat insulation material reuse product according to claim 3 , wherein the heat insulation material reuse product is an electric kotatsu table, a bathtub, a lid of a bathtub, a winter boot, or a cooler box.

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