KR20110061675A - Thermal insulating material using aircap filled with phase change material and the manufacturing method thereof - Google Patents

Thermal insulating material using aircap filled with phase change material and the manufacturing method thereof Download PDF

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Publication number
KR20110061675A
KR20110061675A KR1020090118146A KR20090118146A KR20110061675A KR 20110061675 A KR20110061675 A KR 20110061675A KR 1020090118146 A KR1020090118146 A KR 1020090118146A KR 20090118146 A KR20090118146 A KR 20090118146A KR 20110061675 A KR20110061675 A KR 20110061675A
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KR
South Korea
Prior art keywords
phase change
air cap
change material
film
filled
Prior art date
Application number
KR1020090118146A
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Korean (ko)
Inventor
박영우
Original Assignee
(주)씨쓰리엠앤씨
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Priority to KR1020090118146A priority Critical patent/KR20110061675A/en
Publication of KR20110061675A publication Critical patent/KR20110061675A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat

Abstract

PURPOSE: An insulating material and a manufacturing method thereof using an air cap filled with phase change materials are provided to maintain insulation effect by preventing phase change materials from being scattered according to use of wrapping materials and to gain more effective insulation effect. CONSTITUTION: An insulating material comprises includes an insulation layer, and an aluminum foil layer. The insulation layer is formed by laminating an air cap film wherein phase change materials are filled in an air cap. The aluminum foil layer is bonded on one side of the insulation layer. The air cap film is formed with thermoplastic resin or polyethylene. The phase change material is formed with paraffinic hydrocarbon materials. The bottom surface of the air cap film in which the phase change material is adhered, forms an outer layer of the insulation layer(S4).

Description

Thermal insulating material using aircap filled with phase change material and the manufacturing method

The present invention relates to a heat insulating material formed by laminating two or more layers of an air cap film filled with a phase change material.

Heat insulation means preventing the outflow of necessary heat, and preventing the inflow of unnecessary heat. With the development of modern industry, as the standard of living of the people improves, the demand for heat-insulating packaging materials to maintain the characteristics of the contents while satisfying the original purpose of food packaging is increasing. In particular, foods with large changes in appearance or appearance caused by temperature rise during distribution and transportation processes, such as fruits and vegetables, ice cream, fish and meat, require excellent insulation as well as freshness.

Insulating materials mainly used include organic foam-based expanded polystyrene, rigid urethane foam, urea foam, expanded polyethylene, and the like, and inorganic fiber-based systems include glass wool and rock wool. However, the insulation is mainly used as the insulation of the building is not suitable as a food packaging material.

Until recently, styrene foam has been mainly used as a heat insulating food packaging material. Styrene foam is made by inflating polystyrene, which is a high molecular material, and is made up of 98% of the total volume of air.It is light and has excellent thermal insulation performance.It is also strong in water and inexpensive, so it is fresh food such as packaging buffer, building insulation, disposable container, meat or fish. It is widely used as a packaging container. However, since styrene foam is easily broken, it is difficult to use repeatedly, and because of its weakness in heat, it is often caused by a large fire, and thus, it has been required to develop insulation to replace existing styrene foam.

Phase change material (PCM) is a material applied with phase change technology. The phase change technology originated from NASA, which prevents the spacecraft's fuselage cracking due to rapid temperature changes and prevents the space from extreme temperature deviations. It has been studied to protect astronauts. It is a technology that absorbs heat through the phase change process between solid state and liquid state and releases it when the temperature drops. Phase change technology is a technology that stores or emits a large amount of thermal energy, and is applied to space control, space control, space suits, solar storage systems, and is gradually being developed as functional products. Phase change technology can store tens of times and hundreds of times more thermal energy than other materials. When the temperature rises above the set temperature, the phase change material begins to absorb heat. On the contrary, when the temperature decreases, the phase change material is released because the stored thermal energy is released and the object surrounded by the phase change material can always maintain a constant temperature. Attempts have been made to produce insulation.

An air cap is an air layer formed by injecting and compressing air between synthetic resin films to form an air layer between films. An air cap film is mainly used when a buffer of a product that is fragile is required without a specific product limitation. Linear low density polyethylene (LLDPE) is mainly used for manufacturing. Air cap is mainly used as a packaging material in the case of requiring the buffer of the fragile product as described above, but has a great potential to develop into a heat insulating material using the heat insulation effect of the air layer.

Attempts to make insulation using phase change materials or air caps have been examples.

Republic of Korea Patent No. 10-0860584 "Reflective film and heat insulating material using the same and a method of manufacturing the same" includes a heat insulating layer consisting of a composite layer by laminating the air cap, polyethylene foam and nonwoven fabric; and a film reflective layer formed on the upper and lower surfaces of the heat insulating layer The film reflection layer includes a gold coating formed by mixing gold and paint on the second reflection layer, forming a second reflection layer by depositing aluminum foil on the film layer, forming a synthetic resin film layer on the upper and lower surfaces of the heat insulation layer. After the coating is applied, a heat insulating material using a reflective film, which comprises a first reflective layer formed by heating and drying at a temperature of 200 ° C. for 1 to 2 seconds, is disclosed.

The registered patent relates to a reflective film and a heat insulating material using the same to form a reflective film layer consisting of a reflective film on the upper and lower surfaces of the heat insulating layer so that heat insulation can be efficiently carried out with energy reflection. In addition to the air cap, polyethylene foam and non-woven fabric must be additionally laminated to form a heat insulating layer, and a synthetic resin film layer and aluminum foil must be deposited to form a second reflective layer, and a gold paint mixed with gold and paint is used. It is possible to form a first reflective layer by applying. That is, the registered patent is too complicated to manufacture, and since the raw materials used are various, the advantage is not great to replace the existing styrene foam.

Republic of Korea Patent No. 10-0579704 "Manufacturing method of latent heat storage capsule containing a phase change material in the form of a multi-core" "At least two phase change material in the form of a core, the outer wall of the at least two cores Disclosed are latent heat storage capsules "and" insulation material comprising said latent heat storage capsules "characterized in that a polymer material is coated on a cotton surface.

The registered patent relates to a latent heat storage capsule including a phase change material present in a core having a particle size of several hundred nanometers to several micrometers inside a microcapsule, and an insulating material including the same, but only an heat insulating material including a latent heat storage capsule. It is not disclosed about the construction of concrete insulation material that can replace the advantages of styrene foam by the disclosure.

International Patent No. 2004-007635 (Korean Patent Publication No. 10-2005-0016961) "Heat Storage Medium" discloses a heat storage medium as a use of an insulation system.

The disclosed patent relates to a phase change material for storing thermal energy in the form of phase change heat, and a method and a use thereof, but also discloses only a heat storage medium that can be used for insulation, replacing the advantages of styrene foam. It does not disclose about the structure of the specific heat insulating material which can be made.

The present invention has been made to solve the above problems, but to provide an excellent heat insulating material that can replace the existing styrene foam heat insulating material, there is little raw material used and the processing method is simple to provide an excellent heat insulating material in terms of cost.

In order to solve the above problems, in the present invention, the air cap film 10 filled with the phase change material 12 in the air cap 11 formed on the air cap film 10 is laminated in two layers to form a heat insulating layer 40. And it provides a heat insulating material in which the aluminum thin film 20 is fused to one surface of the heat insulating layer 40. The heat insulating material using the air cap filled with the phase change material according to the present invention may be formed by using only one heat insulating layer 40 or by stacking two or more.

In addition, the present invention comprises the step of bonding the phase change material 12 on the film to form the bottom surface of the air cap film 10 (S 1); Making an air cap film (10) filled with a phase change material (12) by forming an air cap (11) by fusing the film on the film surface to which the phase change material (12) is bonded (S 2); Stacking the air cap film (10) to make a heat insulating layer (40) (S 3); It provides a method of manufacturing a heat insulating material using an air cap filled with a phase change material, including the step (S 4) of depositing an aluminum thin film 20 on one surface of the heat insulating layer 40.

The air cap film 10 according to the present invention refers to fusion of two thermoplastic synthetic resins so that an air bag is formed between the films. The air cap film 10 according to the present invention is manufactured using a thermoplastic synthetic resin, and preferably, polyethylene (PE) is used.

Phase change material (PCM) according to the present invention may be referred to as "latent heat storage material" or "latent heat storage material", but in the present invention will be described as a phase change material (12) below. The phase change material 12 means a material that changes from a solid phase to a liquid phase or from a liquid phase to a solid phase in a predetermined temperature range and absorbs or releases thermal energy, and may be used as long as it can achieve the above purpose. Preferably, a paraffinic hydrocarbon material is used, more preferably n-octacosane, n-heptacosane, n-hexacosane, n-hexacosane, n-tetracoic acid ( n-tetracosane, n-tricocosane, n-docoosane, n-heneicosane, n-eicosane, n-nonadecan (n-nonadecan), n-octadecan, n-heptadecan, n-heptadecan, n-hexadecan, n-pentadecan, n-pentadecan, n-tetradecane At least one substance selected from the group (n-tetradecan) and n-tridecan is used.

The deposition of the aluminum thin film 20 is performed by a vacuum deposition method in which a thin film is formed by vaporizing or subliming aluminum to be coated in a vacuum chamber and solidifying the surface of the plastic film on an atomic or molecular basis, or an aluminum thin film ( Any method may be used as long as it is a known technique for depositing 20) on a plastic film.

The heat insulating material using the air cap filled with the phase change material according to the present invention further increases the heat insulating effect by stacking the air cap film 10 and depositing the aluminum thin film 20 on one surface of the heat insulating layer 40. Doubled, more effective thermal insulation effect can be obtained by using the latent heat effect of the phase change material 12, in particular, the phase change material 12 is filled in the air cap (11) to be stable in the air cap (11) By using the packaging material, the phase change material 12 may not be dropped or scattered by using the packaging material, so that the thermal insulation effect may be maintained even when the packaging material is repeatedly used.

In addition, the phase change material 12 is formed on the outer side of the heat insulating layer 40 and evenly distributed on the inner surface and the outer surface of the packaging material, so that the phase change material 12 directly contacts the packaged object without an air layer on the inner surface of the packaging material. On the outer surface of the packaging material, the phase change material 12 directly contacts the outside air without mediation of the air layer, thereby maximizing the thermal insulation effect due to the heat absorption and release of the phase change material 12.

And the heat insulating material using the air cap filled with the phase change material according to the present invention can provide a heat insulating material having an excellent heat insulating effect at a low price since the manufacturing method is simple and there are not many materials used.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following description is only one example for aiding the understanding of the present invention, and the technical idea of the present invention is not limited thereto and may be variously modified and implemented by those skilled in the art.

1 is a cross-sectional view of a heat insulating material using an air cap filled with a phase change material according to the present invention.

2 is an enlarged cross-sectional view of an air cap 11 portion of an insulation using an air cap filled with a phase change material according to the present invention.

Figure 3 illustrates a method of manufacturing a heat insulating material using an air cap filled with a phase change material according to the present invention.

[Example]

First, the step of adhering the phase change material 12 on the film to form the bottom surface of the air cap film 10 is performed.

Air cap film 10 was used 2 polyethylene (Poly ethylene; PE).

The phase change material 12 used n-octacosane, and the phase change material 12 was adhered onto a film forming the bottom surface of the air cap film 10 using an adhesive.

Subsequently, the air cap film 10 filled with the phase change material 12 is formed by fusing the film on the film surface to which the phase change material 12 is bonded to form the air cap 11. Fusion of the film is carried out by a conventional method of manufacturing the air cap 11, such as thermal fusion.

Thereafter, the step of stacking the air cap film 10 to make a heat insulating layer 40 is performed. When the air cap film 10 is laminated, the bottom surface of the air cap film 10 to which the phase change material 12 is attached forms an outer layer of the heat insulation layer 40. When the bottom surface of the air cap film 10 to which the phase change material 12 is bonded forms an outer layer of the heat insulating layer 40, when the packaging material is manufactured using the heat insulating material, the packaged object and the phase change material on the inner surface of the packing material 12 directly contacts without the media of the air layer, and the phase change material 12 directly contacts the outside air without the media of the air layer on the outer surface of the packaging material, so that the thermal insulation effect of the phase change material 12 may be maximized. The air cap film 10 is laminated by applying an adhesive on the air cap 11 on the air cap film 10 to adhere the air cap films 10 to each other. The adhesive uses a urethane-based adhesive.

By stacking a plurality of heat insulating layers 40 formed as described above can be prepared a heat insulating material using an air cap filled with a phase change material according to the present invention, in this case, the heat insulating layer 40 is carried out using an adhesive. do.

Thereafter, a step of depositing the aluminum thin film 20 on one surface of the heat insulation layer 40 is performed. The deposition of the aluminum thin film 20 is performed by a vacuum deposition method in which a thin film is formed by vaporizing or subliming aluminum to be coated in the vacuum chamber to solidify the surface of the plastic film on an atomic or molecular basis.

1 is a cross-sectional view of a heat insulating material using an air cap filled with a phase change material according to the present invention.

2 is an enlarged cross-sectional view of an air cap 11 portion of an insulation using an air cap filled with a phase change material according to the present invention.

Figure 3 illustrates a method of manufacturing a heat insulating material using an air cap filled with a phase change material according to the present invention.

Description of the main parts of the drawing-

10: air cap film

11: air cap

12: phase change material

20: aluminum thin film

30: insulation layer adhesive surface

40: heat insulation layer

Claims (8)

Insulating layer 40 is laminated with an air cap film 10 filled with a phase change material 12 in the air cap 11, and the aluminum thin film 20 layer fused to one surface of the insulating layer 40 Insulation using an air cap filled with a phase change material, characterized in that. The method of claim 1, The air cap film 10 is a heat insulating material using an air cap filled with a phase change material, characterized in that formed of a thermoplastic synthetic resin. The method of claim 1, The air cap film 10 is a heat insulating material using an air cap filled with a phase change material, characterized in that formed of polyethylene (Poly ethylene; PE). The method of claim 1, The phase change material 12 is a heat insulating material using an air cap filled with a phase change material, characterized in that formed of a paraffinic hydrocarbon material. The method of claim 1, The phase change material 12 is n-octacosane (n-octacosane), n-heptacosane (n-hetacosane), n-hexacosane (n-hexacosane), n-tetracosane (n-tetracosane), n N-tricocosane, n-docoosane, n-heneicosane, n-eicosane, n-nonadecan, n-nonadecan, n-octadecan, n-heptadecan, n-hepdedecan, n-hexadecan, n-pentadecan, n-pentadecan, n-tetradecane and An insulating material using an air cap filled with a phase change material, characterized in that formed of a material selected from the group of n-tridecan (n-tridecan). The method of claim 1, The heat insulating layer 40 is a heat insulating material using an air cap filled with a phase change material, characterized in that formed by stacking a plurality of heat insulating layer 40 laminated two layers of the air cap film 10. The method of claim 1, The heat insulation layer 40 is a heat insulating material using the air cap filled with a phase change material, characterized in that the bottom surface of the air cap film 10 to which the phase change material 12 is bonded to form an outer layer of the heat insulation layer 40. Adhering the phase change material 12 on the film forming the bottom surface of the air cap film 10; Making an air cap film (10) filled with a phase change material (12) by forming an air cap (11) by fusing the film on the film surface to which the phase change material (12) is bonded; Stacking the air cap film (10) to make a heat insulating layer (40); Method of manufacturing an insulating material using an air cap filled with a phase change material by depositing an aluminum thin film 20 on one surface of the insulating layer (40).
KR1020090118146A 2009-12-02 2009-12-02 Thermal insulating material using aircap filled with phase change material and the manufacturing method thereof KR20110061675A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101360755B1 (en) * 2011-10-06 2014-02-11 농업회사법인 주식회사 사이언팜 Film for Agricultural Apparatus Filled with Phase Change Material
WO2015002505A1 (en) * 2013-07-05 2015-01-08 주식회사 아모그린텍 Thermal insulation sheet, hybrid thermal insulation sheet, and thermal insulation panel
WO2018117304A1 (en) * 2016-12-23 2018-06-28 김철규 Sheet, sheet manufacturing device, and sheet manufacturing method
US10088092B2 (en) 2013-07-05 2018-10-02 Amogreentech Co., Ltd. Thermal insulation sheet, hybrid thermal insulation sheet, and thermal insulation panel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101360755B1 (en) * 2011-10-06 2014-02-11 농업회사법인 주식회사 사이언팜 Film for Agricultural Apparatus Filled with Phase Change Material
WO2015002505A1 (en) * 2013-07-05 2015-01-08 주식회사 아모그린텍 Thermal insulation sheet, hybrid thermal insulation sheet, and thermal insulation panel
US10088092B2 (en) 2013-07-05 2018-10-02 Amogreentech Co., Ltd. Thermal insulation sheet, hybrid thermal insulation sheet, and thermal insulation panel
WO2018117304A1 (en) * 2016-12-23 2018-06-28 김철규 Sheet, sheet manufacturing device, and sheet manufacturing method
KR20190090388A (en) * 2016-12-23 2019-08-01 김철규 Sheet, sheet manufacturing apparatus and sheet manufacturing method

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