WO2021132457A1 - 断熱袋、保温袋、および断熱袋の製造方法 - Google Patents

断熱袋、保温袋、および断熱袋の製造方法 Download PDF

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Publication number
WO2021132457A1
WO2021132457A1 PCT/JP2020/048430 JP2020048430W WO2021132457A1 WO 2021132457 A1 WO2021132457 A1 WO 2021132457A1 JP 2020048430 W JP2020048430 W JP 2020048430W WO 2021132457 A1 WO2021132457 A1 WO 2021132457A1
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WO
WIPO (PCT)
Prior art keywords
heat insulating
bag
vacuum heat
outer cover
insulating material
Prior art date
Application number
PCT/JP2020/048430
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English (en)
French (fr)
Japanese (ja)
Inventor
宅島　司
裕一 秦
里江 坂内
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN202080061483.XA priority Critical patent/CN114341021B/zh
Priority to JP2021567608A priority patent/JP7325053B2/ja
Publication of WO2021132457A1 publication Critical patent/WO2021132457A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D29/00—Sacks or like containers made of fabrics; Flexible containers of open-work, e.g. net-like construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum

Definitions

  • the present invention relates to a heat insulating bag, a heat insulating bag, and a method for manufacturing a heat insulating bag.
  • Patent Document 1 describes a heat insulating bag in which a sheet having a three-layer structure made of polyethylene, polyethylene foam, and vapor-deposited polyethylene terephthalate is formed in a bag shape.
  • an object of the present invention is to provide a heat insulating bag, a heat insulating bag, and a method for manufacturing a heat insulating bag, which can improve the heat insulating performance by using the vacuum heat insulating material.
  • the present invention is a heat insulating bag in the form of a sheet having a flexible plate-shaped core material and an outer cover material that accommodates the core material and seals it in a reduced pressure state. It is characterized by having an opening formed by making the vacuum heat insulating material into a bag shape.
  • the heat transfer between the inside and the outside of the heat insulating bag is reduced by the vacuum heat insulating material, so that the heat insulating performance of the heat insulating bag can be improved.
  • FIG. 1 is a perspective view of a heat insulating bag according to the present embodiment.
  • FIG. 2 is a perspective view of the vacuum heat insulating material used for the heat insulating bag of the present embodiment.
  • FIG. 3 is an explanatory view showing a method of manufacturing the heat insulating bag of the present embodiment.
  • FIG. 4 is a partially broken perspective view showing a heat insulating bag provided with the heat insulating bag of the present embodiment.
  • the first invention is a heat insulating bag, which is a sheet-shaped vacuum heat insulating material having a flexible plate-shaped core material and an outer cover material that accommodates the core material and seals it in a reduced pressure state. It is characterized by having an opening formed by forming the shape. According to this, the heat transfer between the inside and the outside of the heat insulating bag made of the vacuum heat insulating material is reduced, and the heat insulating performance of the heat insulating bag can be improved.
  • the vacuum heat insulating material has a rectangular shape, and is bent at substantially the center of the vacuum heat insulating material along a straight line intersecting one side of the vacuum heat insulating material and the other side facing the one side. According to this, the vacuum heat insulating material can be easily formed into a bag shape. Further, since the vacuum heat insulating material is bent, the bottom surface of the heat insulating bag is formed of the vacuum heat insulating material. Therefore, the heat insulating performance of the heat insulating bag can be further improved.
  • the vacuum heat insulating material has a non-insulating portion formed of the outer cover material on the outside of the core material, and the non-insulating portions facing each other are overlapped and folded by being bent. It is adhered to the outer surface of the jacket material. According to this, since the double non-insulating portion is bent on the side surface of the heat insulating bag and adhered to the outer surface of the outer cover material, the heat insulating performance on the side surface of the heat insulating bag can be improved. Therefore, the heat insulating performance of the heat insulating bag can be further improved.
  • the non-insulating portion forming the opening of the vacuum heat insulating material is folded toward the outside of the jacket material and adhered to the outer surface of the jacket material. According to this, since the inside of the opening can be formed smoothly, it becomes easy to put the article in and out of the heat insulating bag.
  • a fifth invention is a heat insulating bag, comprising a protective bag that houses and protects the heat insulating bag, and the heat insulating bag has an opening in which the opening direction coincides with the opening direction of the protective bag. As such, it is adhered to the inside of the protective bag. According to this, it is possible to provide a heat-retaining bag having high heat-retaining property by using a heat-insulating bag. In addition, the vacuum heat insulating material of the heat insulating bag is protected by the protective bag. Therefore, damage to the heat insulating bag can be suppressed.
  • the sixth invention is a method for manufacturing a heat insulating bag, which is formed in a rectangular shape having a flexible plate-shaped core material and an outer cover material that accommodates the core material and seals it in a reduced pressure state.
  • the sheet-shaped vacuum heat insulating material is bent at substantially the center of the vacuum heat insulating material along a straight line intersecting one side of the vacuum heat insulating material and the other side facing the one side, and then the core material is bent.
  • the non-insulating portion formed of the jacket material is adhered to the outside to form a bag shape. According to this, since the vacuum heat insulating material can be bent to manufacture the heat insulating bag, the heat insulating performance of the heat insulating bag can be improved and the heat insulating bag can be easily manufactured.
  • FIG. 1 is a perspective view showing an embodiment of a heat insulating bag according to the present invention.
  • FIG. 2 is a perspective view of the vacuum heat insulating material used for the heat insulating bag of the present embodiment.
  • the thickness of the core material 13 of the vacuum heat insulating material 11 is shown larger than that of the actual product.
  • the heat insulating bag 1 in the present embodiment is configured in the shape of a bag having side sides 3 and 4, bottom 5 and outer surfaces 6 and 7 in FIG. 1 and having an opening 2 in the upper part. It is equipped with a main body 8.
  • the heat insulating bag 1 stores, for example, an article such as food and keeps it warm inside the main body 8 through the opening 2.
  • the vacuum heat insulating material 11 forming the heat insulating bag 1 includes an outer cover material 12, a core material 13, and a moisture adsorbent 14.
  • the outer cover material 12 has a rectangular shape in a plan view, and the outer cover material 12 is formed in a bag shape with one side open.
  • the outer cover material may be any material that suppresses the intrusion of outside air into the vacuum heat insulating material 11 and has flexibility.
  • the heat welding film a resin fill such as a low density polyethylene film can be used.
  • the gas barrier film a known film having a gas barrier property can be preferably used.
  • the upper surface of the vacuum heat insulating material 11 which is the inside of the heat insulating bag 1 is a gas barrier film in which aluminum is vapor-deposited on a resin film, and the lower surface of the vacuum heat insulating material 11 which is the outside of the heat insulating bag 1 is used.
  • Aluminum foil is used as the gas barrier film.
  • the heat-welded film is not particularly specified, but the low-density polyethylene film, the linear low-density polyethylene film, the high-density polyethylene film, the polypropylene film, the polyacrylonitrile film, and the ethylene-vinyl alcohol are all used.
  • a thermoplastic resin such as a polymer film or a mixture thereof can be used.
  • the gas barrier film includes, for example, a metal foil such as an aluminum foil, a copper foil, or a stainless steel foil; a vapor-deposited layer in which a metal or an inorganic oxide is vapor-deposited on a resin film as a base material.
  • a vapor-deposited film; a film in which the surface of the vapor-deposited film is further subjected to a known coating treatment (coated vapor-deposited film); and the like are not particularly limited.
  • the metal or inorganic oxide used in the vapor-deposited film or the coated vapor-deposited film include aluminum, copper, alumina, silica, and the like, but are not particularly limited.
  • the resin constituting the vapor-deposited film or the resin film used as the base material of the coated vapor-deposited film include polyethylene terephthalate (PET) and ethylene-vinyl alcohol copolymer (EVOH), but are not particularly limited.
  • the resin film may be composed of only a resin, or may be composed of a resin composition containing a component other than the resin.
  • the gas barrier film is made of a metal foil, a resin layer or the like may be laminated on the metal foil. Therefore, the gas barrier film may have a single-layer structure or a multi-layer structure.
  • the thickness of the gas barrier film is not particularly limited, and may be a thickness within a range in which the gas barrier property can be exhibited depending on the material of the gas barrier film and the like.
  • the gas barrier of the gas barrier film in the present embodiment may have a gas permeability of 104 [cm3 / m2 ⁇ day ⁇ atm] or less, preferably 103 [cm3 / m2 ⁇ day ⁇ atm] or less. It may be any one, more preferably 102 [cm3 / m2 ⁇ day ⁇ atm] or less.
  • a nylon film, a polyethylene terephthalate film, a polypropylene film or the like can be used as the surface protective film.
  • the core material 13 has a rectangular shape in a plan view.
  • the core material 13 is formed in a sheet shape by laminating, for example, chopped strand mats.
  • the chopped strand mat is obtained by cutting a strand of glass fiber, irregularly dispersing the fiber direction, and forming it into a sheet shape using a binder.
  • the core material 13 is formed by laminating, for example, chopped strand mats having a thickness of 0.5 mm, and is formed so that the thickness under reduced pressure is, for example, 2 mm to 3 mm. Has been done.
  • the fiber direction of the core material 13 is orthogonal to the thickness direction of the core material 13, and it becomes difficult for heat to be transferred in the thickness direction of the core material 13. That is, the heat transfer coefficient of the core material 13 can be reduced. Further, by setting the thickness of the core material 13 under reduced pressure to 2 mm to 3 mm, the flexible vacuum heat insulating material 11 can be formed.
  • the core material 13 is not limited to the chopped strand mat, and any material may be used as long as it has heat insulating properties and is flexible. Specific examples thereof include known materials such as fiber materials and foam materials. Examples of the inorganic fiber include glass fiber, ceramic fiber, slag wool fiber, rock wool fiber and the like. Further, since the core material 13 may be molded into a plate shape and used, a known binder material, powder or the like may be contained in addition to these inorganic fibers. Examples of the material other than the inorganic fiber that can be used as the core material 13 include a thermosetting foam. The thermosetting foam may be formed by foaming a thermosetting resin or a resin composition containing the same (thermosetting resin composition) by a known method.
  • thermosetting resin examples include epoxy resin, phenol resin, unsaturated polyester resin, urea resin, melamine resin, polyimide, polyurethane, and the like, but are not particularly limited.
  • foaming method is not particularly limited, and foaming may be performed using a known foaming agent under known conditions.
  • materials that can be used as the core material 13 include known organic fibers (fibers made of organic materials), and the specific types thereof are particularly specific. Not limited.
  • the moisture adsorbent 14 adsorbs the moisture in the outer cover material 12 to maintain the heat insulating performance of the vacuum heat insulating material 11.
  • the moisture adsorbent 14 is sealed inside the outer cover material 12 together with the core material 13, and the moisture remaining inside the outer cover material 12, that is, the inside of the vacuum heat insulating structure, or the moisture that permeates and invades from the outside over time. It is adsorbed and removed.
  • the specific type of the moisture adsorbent 14 is not particularly limited, and typically, physical moisture adsorption such as silica gel, activated alumina, activated carbon, metal adsorbent, zeolite and the like.
  • materials physical adsorbents
  • materials that exhibit their properties.
  • examples of the water adsorbent include materials (chemical adsorbents) that exhibit chemical water adsorbability, such as alkali metals, oxides of alkaline earth metals, and hydroxides. Only one of these materials may be used as the water adsorbent 14, or two or more of these materials may be appropriately combined and used as the water adsorbent 14.
  • the gas adsorbent may be sealed inside the outer cover material 12 together with the moisture adsorbent 14.
  • the gas adsorbent may be any material that adsorbs and removes the gas component remaining inside the outer cover material 12, that is, the inside of the vacuum heat insulating structure, or the gas component that permeates and penetrates from the outside over time.
  • the gas adsorbent may have at least gas adsorbability, but may have not only gas adsorbability but also water adsorbability.
  • the water adsorbability of the gas adsorbent is basically a property of adsorbing water vapor, and can be regarded as a part of the gas adsorbability.
  • the specific type of the gas adsorbent is not particularly limited, and as with the moisture adsorbent 14 described above, known materials such as silica gel, activated alumina, activated carbon, metal adsorbent, and zeolite can be preferably used. Only one of these materials may be used as a gas adsorbent, or two or more of these materials may be appropriately combined and used as a gas adsorbent.
  • ZSM-5 type zeolite copper ion exchange ZSM-5 type zeolite formed by copper ion exchange can be preferably used as the gas adsorbent.
  • Copper ion exchange ZSM-5 type zeolite has excellent adsorption ability not only for nitrogen and oxygen, which are air components, but also for water (water vapor). Therefore, if the gas adsorbent uses copper ion exchange ZSM-5 type zeolite, the moisture adsorbent 14 can also be used, so that the air that could not be exhausted by the vacuum pump during the production of the vacuum heat insulating material 11 can be used. It is possible to satisfactorily adsorb and remove components, a small amount of gas generated inside the vacuum heat insulating material 11 over time, an air component or moisture that permeates and invades from the outside to the inside of the vacuum heat insulating material 11 over time.
  • the vacuum heat insulating material 11 can realize excellent heat insulating performance for a long period of time.
  • the form of use of the water adsorbent 14 and the gas adsorbent is not particularly limited, and examples thereof include powder, a powder package, and a powder molded product. If the gas adsorbent is a copper ion-exchanged ZSM-5 type zeolite, a molded product obtained by molding powder into a predetermined shape can be mentioned.
  • the amount of the moisture adsorbent 14 and the gas adsorbent used is not particularly limited, and may be an amount that can satisfactorily maintain the reduced pressure state (substantially vacuum state) inside the jacket material 12 of the vacuum heat insulating material 11.
  • the inside of the outer cover material 12 is depressurized, and then the opening of the outer cover material 12 is closed by heat welding or the like.
  • the vacuum heat insulating material 11 whose inside is in a reduced pressure state.
  • the outer cover materials 12 are brought into close contact with each other by reducing pressure in the outer region of the core material 13, and the non-heat insulating portion 20 in which the core material 13 does not exist is formed.
  • the non-insulated portion 20 is a side non-insulated portion 24, 25 extending along the longitudinal direction of the vacuum heat insulating material 11 and an end non-insulated portion extending in a direction orthogonal to the side non-insulated portion 24, 25. It is composed of 21 and 22.
  • FIG. 3 is an explanatory diagram showing a method of manufacturing the heat insulating bag 1 of the present embodiment.
  • the vacuum heat insulating material 11 is formed in the heat insulating bag 1 by the steps A to D.
  • the vacuum heat insulating material 11 bends the end non-heat insulating parts 21 and 22 toward the lower side of the vacuum heat insulating material 11 from the state shown in FIG. 2, and the core material 13 of the vacuum heat insulating material 11 exists. Adhere to the outer surface of the location.
  • the vacuum heat insulating material 11 is formed along the bisection line 12c which is a straight line intersecting the right side 12a of the vacuum heat insulating material 11 and the left side 12b which is the other side facing the right side 12a. Bend approximately 180 ° at approximately the center.
  • the bending direction of the vacuum heat insulating material 11 is such that the surfaces to which the end non-heat insulating portions 21 and 22 are bonded face outward. In this state, the side non-insulating portions 24 and 25 of the vacuum heat insulating material 11 are held in a state of being overlapped with each other.
  • the process of bending the vacuum heat insulating material 11 is divided into two steps, step B and step C.
  • step D one of the side non-insulating portions 24 and 25 overlapped with each other is bent and bonded to one side of the vacuum heat insulating material 11. Further, the other side non-insulating portion 25 is bent and adhered to the other surface side of the vacuum heat insulating material 11.
  • the bottom portion 5 is formed by bending the vacuum heat insulating material 11, and the side portions 3 and 4 are formed by adhering the side non-insulating portions 24 and 25, so that the opening 2 is formed.
  • the bag-shaped heat insulating bag 1 having the above can be manufactured.
  • the end non-insulating portions 21 and 22 and the side non-insulating portions 24 and 25 are adhered by, for example, adhering with an adhesive tape.
  • the steps generated when the end non-insulating portions 21 and 22 and the side non-insulating portions 24 and 25 are bent and adhered are covered with the adhesive tape, so that the heat insulating bag is used.
  • the outer surface of 1 can be formed smoothly.
  • the present invention is not limited to this, and an adhesive, welding, or the like may be used.
  • the end non-insulating portions 21 and 22 are adhered to the outside of the vacuum heat insulating material 11, but the end non-insulating portions 21 and 22 are adhered to the inside of the vacuum heat insulating material 11. You may. Further, the side non-insulating portions 24 and 25 are adhered to one surface and the other surface of the vacuum heat insulating material 11, respectively, but the side non-insulating portions 24 and 25 are adhered to the same surface of the vacuum heat insulating material 11, respectively. You may try to do it.
  • the vacuum heat insulating material 11 is bent along the bisection line 12c in a state where one side non-heat insulating portion 24 is bent and adhered to the vacuum heat insulating material 11, and the other side is manufactured.
  • a bag shape having an opening formed in one side portion non-insulating portion 24 may be formed. ..
  • FIG. 4 is a partially broken perspective view showing a heat insulating bag 51 provided with the heat insulating bag 1 of the present embodiment.
  • the heat insulating bag 51 includes a protective bag 53 that houses and protects the heat insulating bag 1 inside.
  • the protective bag 53 is formed in the shape of a rectangular bag having an opening 52 formed on one side.
  • the width dimension of the inner surface of the protective bag 53 is formed to be substantially the same as the width dimension of the heat insulating bag 1.
  • the length from the inner bottom portion 55 to the opening 52 of the protective bag 53 is formed to be longer than the length from the bottom portion 5 to the opening 2 of the heat insulating bag 1.
  • the specific configuration of the protective bag 53 is not particularly limited, but examples thereof include a bag body formed of a cushioning sheet and having flexibility so as to protect the heat insulating bag 1. Can be done.
  • a protective bag 53 can be formed by laminating an aluminum-deposited polyethylene terephthalate film, a foamed polyethylene sheet, and a high-density polyethylene film and using a sheet having a thickness of about 1 to 2 mm.
  • the heat insulating bag 1 is stored so that the opening direction of the opening 2 coincides with the opening direction of the opening 52 of the protective bag 53. Then, in a state where the bottom portion 5 of the heat insulating bag 1 is in contact with the inner bottom portion 55 of the protective bag 53, the heat insulating bag 1 and the protective bag 53 are adhered to each other, and the heat insulating bag 1 and the protective bag 53 are fixed.
  • the heat insulating bag 1 and the protective bag 53 are adhered to each other by, for example, a double-sided tape 57 attached to the outer periphery of the opening 2 of the heat insulating bag 1.
  • the heat insulating bag 1 and the protective bag 53 may be adhered with an adhesive.
  • a portion of the protective bag 53 longer than the heat insulating bag 1 is a folding portion 56, and the folding portion 56 is a state in which the heat insulating bag 1 is stored in the protective bag 53. , Can be folded.
  • the thickness of the core material 13 is formed as thin as about 2 mm to 3 mm, the heat insulating bag 1 is easily bent, and the heat insulating bag 1 can be easily deformed according to the shape of the article to be stored. Goods can be easily put in and taken out of the bag 1. Further, since the heat insulating bag 1 is bent and deformed according to the stored object, the amount of gas existing in the space inside the heat insulating bag 1 can be reduced, and the heat retention of the heat insulating bag 1 can be improved. ..
  • the article Since the article is covered with the vacuum heat insulating material 11, heat transfer to the article is reduced. Since the bottom 5 of the heat insulating bag 1 is also the vacuum heat insulating material 11, heat transfer from the bottom 5 can be suppressed. Further, the portion where the vacuum heat insulating material 11 is bent is only the bottom portion 5, and the vacuum heat insulating material 11 can be easily formed into a bag shape.
  • the heat insulating bag 1 may close the opening 2 while holding the article inside. By closing the opening 2, it is possible to suppress the inflow of outside air from the opening 2 and improve the heat retention performance.
  • the gas barrier film inside the heat insulating bag 1 is made of a resin film vapor-deposited with aluminum, the metal layer of the gas barrier film inside is thinly formed. Therefore, the heat bridging phenomenon in which heat is transferred through the metal layer of the gas barrier film is reduced as compared with the case of using the gas barrier film using the metal foil.
  • the heat insulating bag 1 Since the heat insulating bag 1 is housed in the protective bag 53, the outer surfaces 6 and 7 of the heat insulating bag 1 are covered with the protective bag 53, and the influence of the heat bridge phenomenon generated in the heat insulating bag 1 can be reduced. By closing the opening 52 and folding the folding portion 56, it is possible to suppress the inflow of air into the protective bag 53 through the opening 52.
  • the heat insulating bag 1 is formed of a plate-shaped core material 13 having flexibility and an outer cover material 12 that accommodates the core material 13 and seals it in a reduced pressure state. It has an opening 2 formed by forming the sheet-shaped vacuum heat insulating material 11 to be made into a bag shape. According to this, since the heat insulating bag 1 is composed of the vacuum heat insulating material 11, the heat transfer between the inside and the outside of the heat insulating bag 1 can be reduced by the vacuum heat insulating material 11, and the heat insulating of the heat insulating bag 1 can be reduced. Performance can be improved.
  • the vacuum heat insulating material 11 has a rectangular shape, and is bisected which is a straight line intersecting the right side 12a which is one side of the vacuum heat insulating material 11 and the left side 12b which is the other side facing the right side 12a. It is bent approximately in the center along the line 12c. According to this, the vacuum heat insulating material 11 can be easily formed into a bag shape. Further, since the vacuum heat insulating material 11 is bent at the center, the bottom 5 of the heat insulating bag 1 is formed of the vacuum heat insulating material 11. Therefore, the heat insulating performance of the heat insulating bag 1 can be further improved.
  • the vacuum heat insulating material 11 has the non-insulating portion 20 formed of the outer cover material 12 on the outside of the core material 13, and the side portions of the non-insulating portions 20 facing each other by being bent.
  • the side non-insulating portions 24 are overlapped and folded and adhered to the outer surface 6 which is the outer surface of the outer cover material 12, and by being bent, the side non-insulating portions 25 facing each other are overlapped and folded to form the outer cover material 12. It is adhered to the outer surface 7 which is the outer surface of the.
  • the heat insulating on the side sides 3 and 4 of the insulating bag 1 Performance can be improved. Therefore, the heat insulating performance of the heat insulating bag 1 can be further improved.
  • the end non-insulating portions 21 and 22, which are the non-insulating portions 20 forming the opening 2 are each folded toward the outside of the outer cover material 12, and are formed on the outer surface of the outer cover material 12. It is adhered to certain outer surfaces 6 and 7 to form an opening 2. According to this, since the inside of the opening 2 can be formed smoothly, it becomes easy to put the article in and out of the heat insulating bag 1.
  • the protective bag 53 for storing and protecting the heat insulating bag 1 is provided, and the heat insulating bag 1 has the opening direction of the opening 2 coincident with the direction of the opening 52 of the protective bag 53. , Adhered inside the protective bag 53. According to this, the heat insulating bag 51 having high heat retaining property can be provided by using the heat insulating bag 1. Further, since the vacuum heat insulating material 11 of the heat insulating bag 1 is protected by the protective bag 53, damage to the heat insulating bag 1 can be suppressed.
  • the method for manufacturing the heat insulating bag 1 includes a plate-shaped core material 13 having flexibility and an outer cover material 12 that accommodates the core material 13 and seals it in a reduced pressure state.
  • the sheet-shaped vacuum heat insulating material 11 formed in a rectangular shape is formed into a bisection line 12c which is a straight line intersecting the right side 12a which is one side of the vacuum heat insulating material 11 and the left side 12b which is the other side facing the right side 12a.
  • the vacuum heat insulating material 11 is bent at substantially the center, and after being bent, the non-heat insulating portion 20 formed of the outer cover material 12 is adhered to the outside of the core material 13 to form a bag shape. According to this, since the vacuum heat insulating material 11 can be bent to manufacture the heat insulating bag 1, the heat insulating performance of the heat insulating bag 1 can be improved and the heat insulating bag 1 can be easily manufactured.
  • the heat insulating bag according to the present invention is formed by bending a sheet-shaped vacuum heat insulating material into a bag shape, and can be suitably used as a heat insulating bag that can be easily manufactured at a low manufacturing cost. Is.
  • Insulation bag 2 Openings 3, 4 Sides 6, 7 Outer surface 11 Vacuum heat insulating material 12 Outer cover material 12c Bisection line 13 Core material 20 Non-insulated part 21, 22 Side non-insulated part 24, 25 End non-insulated Part 51 Thermal bag 52 Opening 53 Protective bag

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Insulation (AREA)
  • Packages (AREA)
PCT/JP2020/048430 2019-12-24 2020-12-24 断熱袋、保温袋、および断熱袋の製造方法 WO2021132457A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202080061483.XA CN114341021B (zh) 2019-12-24 2020-12-24 隔热袋、保温袋和隔热袋的制造方法
JP2021567608A JP7325053B2 (ja) 2019-12-24 2020-12-24 断熱袋、保温袋、および断熱袋の製造方法

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JP2019-233165 2019-12-24
JP2019233165 2019-12-24

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JP2005231178A (ja) * 2004-02-19 2005-09-02 Sekisui Plastics Co Ltd 保冷保温袋及びその製造方法
JP3140178U (ja) * 2007-12-27 2008-03-13 株式会社オオバ 巾着袋
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