JP2011230300A - Film for vacuum heat insulating material, and vacuum heat insulating material - Google Patents
Film for vacuum heat insulating material, and vacuum heat insulating material Download PDFInfo
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- 239000011810 insulating material Substances 0.000 title claims abstract description 60
- 239000010410 layer Substances 0.000 claims abstract description 96
- 230000004888 barrier function Effects 0.000 claims abstract description 39
- 239000000565 sealant Substances 0.000 claims abstract description 31
- 239000000853 adhesive Substances 0.000 claims abstract description 29
- 230000001070 adhesive effect Effects 0.000 claims abstract description 29
- 239000011241 protective layer Substances 0.000 claims abstract description 12
- 239000011162 core material Substances 0.000 claims abstract description 10
- 239000011888 foil Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229920001684 low density polyethylene Polymers 0.000 claims description 8
- 239000004702 low-density polyethylene Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000003475 lamination Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000010408 film Substances 0.000 description 57
- 239000007789 gas Substances 0.000 description 36
- 238000009413 insulation Methods 0.000 description 15
- 230000035699 permeability Effects 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 238000005452 bending Methods 0.000 description 8
- 238000009661 fatigue test Methods 0.000 description 7
- -1 polyethylene terephthalate Polymers 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 239000002985 plastic film Substances 0.000 description 5
- 229920006255 plastic film Polymers 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229920006284 nylon film Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
- 239000004707 linear low-density polyethylene Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
Description
本発明は、真空断熱材用フィルム及び真空断熱材に関するものである。 The present invention relates to a film for a vacuum heat insulating material and a vacuum heat insulating material.
近年、地球環境の保護、特に省エネルギーの観点から、優れた断熱性能を有する材料が求められており、この点において真空断熱材は特に優れた断熱性能を有しているので、冷蔵庫用の断熱材や住宅断熱壁用の断熱パネルなどに広く用いられている。この真空断熱材は、芯材と、この芯材を包被する真空断熱材用フィルムから成っている。 In recent years, a material having excellent heat insulation performance has been demanded from the viewpoint of protection of the global environment, particularly energy saving, and in this respect, vacuum insulation has particularly excellent heat insulation performance. It is widely used for insulation panels for heat insulation walls and houses. This vacuum heat insulating material consists of a core material and a film for a vacuum heat insulating material covering the core material.
真空断熱材用フィルムは、外部からのガス（空気）の透過を防ぎ、長期間の真空状態を保持するために優れたガスバリア性が求められる。さらに、近年、真空断熱材の周囲のヒレ部（溶着シールした部分）は、芯材が入っている部分に比べて断熱性能が低く、全体の断熱性能を保つために、ヒレ部は折り曲げられ、また、真空断熱材自体も、複雑な形状（例えば、円弧形状や直角形状）の箇所に用いられる場合収納スペースの形状に従って変形されるようになっている。以上のことより、真空断熱材用フィルムには折り曲げや変形に際してガスバリア性が低下しないことも求められている。 The film for a vacuum heat insulating material is required to have excellent gas barrier properties in order to prevent the permeation of gas (air) from the outside and maintain a vacuum state for a long period of time. Furthermore, in recent years, the fin portion around the vacuum heat insulating material (welded and sealed portion) has lower heat insulating performance than the portion containing the core material, and the fin portion is bent to maintain the overall heat insulating performance, The vacuum heat insulating material itself is also deformed according to the shape of the storage space when used in a complicated shape (for example, an arc shape or a right angle shape). From the above, it is also demanded that the film for vacuum heat insulating material does not deteriorate the gas barrier property upon bending or deformation.
上記要求事項を満たすために、従来、シーラント層を厚くすることによってピンホールの発生を防止することが提案されている。しかしながら、真空断熱材用フィルムのシーラント層の断面積が大きくなるので、シーラント層の端面からの酸素透過量が大きくなって真空度が低下し、断熱性が損なわれるという問題があった。 In order to satisfy the above requirements, it has been conventionally proposed to prevent the generation of pinholes by increasing the thickness of the sealant layer. However, since the cross-sectional area of the sealant layer of the film for vacuum heat insulating material is increased, there is a problem that the amount of oxygen permeated from the end face of the sealant layer is increased, the degree of vacuum is lowered, and the heat insulating property is impaired.
上記の問題を解決するために、２枚の透明バリアフィルムをポリオレフィン樹脂で押出ラミネーションにより貼り合せた真空断熱材用フィルムが提案されている（特許文献１）。しかしながら、透明バリアフィルムに押出されたポリオレフィン樹脂の熱によって、蒸着層が劣化しガスバリア性が低下するという問題を有していた。 In order to solve the above problem, a film for a vacuum heat insulating material in which two transparent barrier films are bonded together by extrusion lamination with a polyolefin resin has been proposed (Patent Document 1). However, the heat of the polyolefin resin extruded on the transparent barrier film has a problem that the vapor deposition layer deteriorates and the gas barrier property is lowered.
このように、真空断熱材用フィルムには折り曲げや変形加工をしてもガスバリア性が低下しないこと、すなわち、屈曲変形後においてもガスバリア性を保持する真空断熱材用フィルムが求められ、それに対して上記のような提案がなされているが、未だ満足できるものはなかった。 Thus, the film for vacuum heat insulating material is required to have a film for vacuum heat insulating material that does not deteriorate the gas barrier property even after being bent or deformed. Although the above proposals have been made, nothing has been satisfactory yet.
本発明は、従来の真空断熱材用フィルムに比べ、折り曲げや変形した後でも優れたガスバリア性を保持できる真空断熱材用フィルム及びそれを用いて芯材を密封包装した真空断熱材を提供することを目的とするものである。 The present invention provides a film for a vacuum heat insulating material that can maintain excellent gas barrier properties even after being bent or deformed as compared with a conventional film for a vacuum heat insulating material, and a vacuum heat insulating material in which a core material is hermetically packaged using the film. It is intended.
本発明者等は上記課題を解決すべく鋭意検討を加えた結果、ガスバリア層とシーラント層が接着性クッション層を介して貼り合わされていることにより上記目的を達成することができることを見出し、本発明を完成するに至ったものである。 As a result of intensive studies to solve the above problems, the present inventors have found that the above object can be achieved by bonding the gas barrier layer and the sealant layer through an adhesive cushion layer. Has been completed.
すなわち、本発明は、
（１）保護層、ガスバリア層及びシーラント層を有する真空断熱材用フィルムであって、前記真空断熱材用フィルムのガスバリア層とシーラント層が接着性クッション層を介して貼り合わされていることを特徴とする真空断熱材用フィルム。
（２）前記接着性クッション層が押出ラミネートされた低密度ポリエチレン樹脂であることを特徴とする（１）記載の真空断熱材用フィルム。
（３）前記接着性クッション層の厚みが１１〜５０μｍであり、且つ０．９１９〜０．９２４ｇ／ｃｍ３の低密度ポリエチレン樹脂であることを特徴とする（１）または（２）記載の真空断熱材用フィルム
（４）前記ガスバリア層が金属箔であることを特徴とする（１）乃至（３）記載の真空断熱材用フィルム。
（５）上記（1）乃至（４）記載の真空断熱材用フィルムが芯材を密封包装してなることを特徴とする真空断熱材。
を要旨とするものである。
That is, the present invention
(1) A film for a vacuum heat insulating material having a protective layer, a gas barrier layer and a sealant layer, wherein the gas barrier layer and the sealant layer of the vacuum heat insulating material film are bonded together via an adhesive cushion layer. Film for vacuum insulation.
(2) The film for vacuum heat insulating material according to (1), wherein the adhesive cushion layer is a low density polyethylene resin obtained by extrusion lamination.
(3) The vacuum according to (1) or (2), wherein the adhesive cushion layer is a low-density polyethylene resin having a thickness of 11 to 50 μm and 0.919 to 0.924 g / cm 3. Thermal insulation film (4) The vacuum thermal insulation film according to any one of (1) to (3), wherein the gas barrier layer is a metal foil.
(5) A vacuum heat insulating material, wherein the film for a vacuum heat insulating material according to the above (1) to (4) is formed by sealing and packaging a core material.
Is a summary.
本発明の真空断熱材用フィルムは、従来の真空断熱材用フィルムに比べ、折り曲げや変形した後でも優れたガスバリア性を保持できるので、当該真空断熱材用フィルムを用いた真空断熱材は長期間にわたって使用しても高い信頼度で真空を維持することができ、断熱性能が低下しないといった効果を有する。 Since the film for a vacuum heat insulating material of the present invention can maintain excellent gas barrier properties even after being bent or deformed as compared with a conventional film for a vacuum heat insulating material, the vacuum heat insulating material using the film for a vacuum heat insulating material has a long period of time. Even if used over a long time, the vacuum can be maintained with high reliability, and the heat insulation performance does not deteriorate.
以下に、本発明を詳細に説明する。 The present invention is described in detail below.
本発明の真空断熱材用フィルムは、図１に示すように、ガスバリア層とシーラント層が接着性クッション層を介して貼り合わされたものである。この接着性クッション層は、ガスバリア層とシーラント層とを接着させるだけではなく、該両層の間にクッション性を付与するものである。 As shown in FIG. 1, the film for a vacuum heat insulating material of the present invention is obtained by bonding a gas barrier layer and a sealant layer through an adhesive cushion layer. This adhesive cushion layer not only bonds the gas barrier layer and the sealant layer, but also imparts cushioning properties between the two layers.
接着性クッション層に用いる樹脂は、低密度ポリエチレンであることが好ましい。前記低密度ポリエチレン層としては、密度が０．９１９〜０．９２４ｇ／ｃｍ３、さらには０．９１９〜０．９２２ｇ／ｃｍ３のものが好適である。密度が０．９１９〜０．９２４ｇ／ｃｍ３の場合、接着性クッション層の端面からのガス透過の抑制ができ、十分なクッション性を付与することができるので好ましい。また、メルトフローレート（以下、ＭＦＲという）は、５〜２０ｇ／１０ｍｉｎ、さらには５〜１５ｇ／１０ｍｉｎのものが好適である。ＭＦＲが５〜２０ｇ／１０ｍｉｎであると、押出加工による製膜性が優れているので好ましい。 The resin used for the adhesive cushion layer is preferably low density polyethylene. The low-density polyethylene layer preferably has a density of 0.919 to 0.924 g / cm 3 , and more preferably 0.919 to 0.922 g / cm 3 . A density of 0.919 to 0.924 g / cm 3 is preferable because gas permeation from the end face of the adhesive cushion layer can be suppressed and sufficient cushioning properties can be imparted. The melt flow rate (hereinafter referred to as MFR) is preferably 5 to 20 g / 10 min, more preferably 5 to 15 g / 10 min. An MFR of 5 to 20 g / 10 min is preferable because the film forming property by extrusion is excellent.
前記接着性クッション層の厚みは、１１〜５０μｍ、さらには１５〜３０μｍとするのが好適である。厚みが１１μｍ未満の場合には十分なクッション性を付与することができず、５０μｍ以上の場合にはコストアップや接着性クッション層の断面積が大きくなり端面からのガスが透過しやすくなるので好ましくない。 The thickness of the adhesive cushion layer is preferably 11 to 50 μm, more preferably 15 to 30 μm. When the thickness is less than 11 μm, sufficient cushioning properties cannot be imparted. When the thickness is 50 μm or more, the cost is increased and the cross-sectional area of the adhesive cushion layer is increased, and gas from the end face is easily transmitted. Absent.
ガスバリア層とシーラント層との積層方法は、低密度ポリエチレン樹脂をガスバリア層上にカーテン状に溶融押出し、接着性クッション層を形成しながらシーラント層を重ね合わせて積層される。 As a method for laminating the gas barrier layer and the sealant layer, a low density polyethylene resin is melt-extruded in a curtain shape on the gas barrier layer, and the sealant layer is laminated while forming an adhesive cushion layer.
ガスバリア層の表面には接着性クッション層との密着性を付与するために表面前処理をすることが好ましい。表面前処理は、例えば、ガスバリア層の表面に、アンカーコート層、プライマー層などを施すことができる。具体的には、アンカーコート層は二液硬化型のポリウレタン系樹脂を溶媒に加えて充分に混合して樹脂組成物を調整し、該樹脂組成物をガスバリア層の表面にコーティングした後に、コーティング層を乾燥させて溶媒を除去して形成することができる。 The surface of the gas barrier layer is preferably subjected to surface pretreatment in order to provide adhesion with the adhesive cushion layer. In the surface pretreatment, for example, an anchor coat layer, a primer layer, or the like can be applied to the surface of the gas barrier layer. Specifically, the anchor coat layer is prepared by adding a two-component curable polyurethane resin to a solvent and thoroughly mixing the resin composition, coating the resin composition on the surface of the gas barrier layer, and then coating the resin layer. Can be formed by drying to remove the solvent.
本発明の真空断熱材用フィルムを構成するシーラント層は、真空断熱材用フィルムの中で最もガス透過度が大きい部分であり、シーラント層の性質は真空断熱材の経時断熱性能に大きく影響する。シーラント層の厚さは、減圧封止工程における封止品質の安定性や、シーラント部端面からのガス透過の抑制を考慮すると、１０〜１００μｍが好ましい。シーラント層の厚さが１０μｍ未満の場合には十分なシーラントによる接着力が得られにくく、１００μｍを超えるとコストアップやシーラント層の端部からガスが透過し真空度が低下するので好ましくない。シーラント層の材料としては、従来公知のものを用いることができ、特に、接着性クッション層の樹脂の密度よりも密度が高いものを好適に用いることができる。具体的には、使用する樹脂としては、直鎖状低密度ポリエチレンを用いることができ、密度は０．９２０ｇ／ｃｍ３以上、さらには０．９２４〜０．９３４ｇ／ｃｍ３、よりさらには０．９２４〜０．９２８ｇ／ｃｍ３のものが好適である。 The sealant layer constituting the film for a vacuum heat insulating material of the present invention is a portion having the highest gas permeability in the film for a vacuum heat insulating material, and the properties of the sealant layer greatly affect the heat insulation performance of the vacuum heat insulating material over time. The thickness of the sealant layer is preferably 10 to 100 μm in consideration of the stability of the sealing quality in the reduced pressure sealing process and the suppression of gas permeation from the end face of the sealant part. When the thickness of the sealant layer is less than 10 μm, it is difficult to obtain a sufficient adhesive force by the sealant. As the material for the sealant layer, conventionally known materials can be used, and in particular, a material having a higher density than the resin density of the adhesive cushion layer can be suitably used. Specifically, as the resin to be used, linear low-density polyethylene can be used, and the density is 0.920 g / cm 3 or more, further 0.924 to 0.934 g / cm 3 , and further 0. 924-0.928 g / cm 3 is preferred.
本発明の真空断熱材用フィルムに用いられるガスバリア層としては、金属箔、もしくは金属または金属酸化物の薄膜層を形成したプラスチックフィルムあるいはそれらを複数組み合わせたものを用いることができる。 As a gas barrier layer used for the film for vacuum heat insulating materials of the present invention, a metal foil, a plastic film in which a thin film layer of metal or metal oxide is formed, or a combination of them can be used.
金属箔としては、ガスバリア性や経済性などの種々の観点から従来公知のアルミニウム箔を特に好適に用いることができる。アルミニウム箔の厚さは５〜５０μｍが好ましく、さらには５〜３０μｍが好ましい。一般にアルミニウム箔が薄くなるとピンホールが増えやすく、厚くなるとヒートリークが増大するために断熱性能が悪くなるので好ましくない。
金属または金属酸化物の薄膜層を形成させるプラスチックフィルムとしては、例えば、ポリエチレンテレフタレートフィルムやＥＶＯＨフィルムが好ましく、本発明のガスバリア層としては、当該プラスチックフィルムの上へアルミニウムなどの金属、またはシリカ、アルミナなどの金属酸化物を単独、あるいはそれらの混合物からなる単層または多層の薄膜層を形成したものを使用できる。前記金属または金属酸化物の薄膜層を形成したプラスチックフィルムを用いる場合、薄膜層は保護層側に向くように積層して用いるのが好ましい。
本発明のガスバリア層は、金属または金属酸化物の薄膜層を形成したプラスチックフィルムよりも金属箔、特にアルミニウム箔を用いるのが好ましい。
As the metal foil, a conventionally known aluminum foil can be particularly suitably used from various viewpoints such as gas barrier properties and economy. The thickness of the aluminum foil is preferably 5 to 50 μm, more preferably 5 to 30 μm. In general, when the aluminum foil is thin, the number of pinholes tends to increase, and when the aluminum foil is thick, heat leak is increased and the heat insulation performance is deteriorated.
As a plastic film for forming a metal or metal oxide thin film layer, for example, a polyethylene terephthalate film or an EVOH film is preferable. As the gas barrier layer of the present invention, a metal such as aluminum or silica, alumina on the plastic film. A single-layered or multi-layered thin film layer made of a single metal oxide or a mixture thereof can be used. When using a plastic film on which the metal or metal oxide thin film layer is formed, the thin film layer is preferably laminated so as to face the protective layer side.
The gas barrier layer of the present invention is preferably made of a metal foil, particularly an aluminum foil, rather than a plastic film having a metal or metal oxide thin film layer formed thereon.
真空断熱材用フィルムの保護層として、従来公知のものを用いることができ、例えば、ポリエチレンテレフタレートフィルム、ナイロンフィルム、ポリプロピレンフィルムや、ナイロン系樹脂とエチレン−ビニルアルコール共重合体とナイロン系樹脂とがこの順に積層された共押出延伸フィルムなどを一軸延伸または二軸延伸した各種フィルムあるいはそれらを複数組み合わせたものを用いることができる。保護層に用いる各フィルムの厚さは５〜３０μｍ、さらには１０〜２５μｍのものを好適に用いることができる。厚さが５μｍ未満では他と接触した際に破れてしまい保護層としての役割を果たせず、３０μｍを超えると、柔軟性に欠けるものとなり、安定した生産ができずハンドリング性が悪くなり実用的ではない。 As the protective layer of the film for vacuum heat insulating material, conventionally known ones can be used. For example, polyethylene terephthalate film, nylon film, polypropylene film, nylon resin, ethylene-vinyl alcohol copolymer and nylon resin are used. Various films obtained by uniaxially or biaxially stretching coextrusion stretched films or the like laminated in this order, or a combination of them can be used. The thickness of each film used for the protective layer is preferably 5 to 30 μm, more preferably 10 to 25 μm. If the thickness is less than 5 μm, it will be broken when it comes into contact with others, and will not serve as a protective layer. If it exceeds 30 μm, it will lack flexibility, and stable production will not be possible and handling will be poor. Absent.
本発明の真空断熱材用フィルムを構成する保護層とガスバリア層の各層の積層方法は、従来公知の方法を用いることができ、例えば２液硬化型ウレタン系接着剤等を用いたドライ・ラミネーション、熱ラミネーション等による方法が採用できる。また接着力を向上させるために任意の層に必要に応じてアンカーコート層や印刷・着色層、プライマー層、オーバーコート層等を施して積層することができる。 As a method for laminating the protective layer and the gas barrier layer constituting the vacuum heat insulating material film of the present invention, a conventionally known method can be used, for example, dry lamination using a two-component curable urethane adhesive or the like, A method using thermal lamination or the like can be employed. Moreover, in order to improve adhesive force, it can laminate | stack by giving an anchor coat layer, a printing / coloring layer, a primer layer, an overcoat layer, etc. as needed to arbitrary layers.
本発明の真空断熱材用フィルムの特徴は、ガスバリア層とシーラント層とが接着性クッション層を介して貼り合わされることによって、接着剤を介して貼り合わせたものに比べて、折り曲げや変形に際した後でも優れたガスバリア性を保持するものである。 The feature of the film for a vacuum heat insulating material of the present invention is that the gas barrier layer and the sealant layer are bonded together via the adhesive cushion layer, so that the film is bent or deformed as compared with those bonded via an adhesive. Even after this, excellent gas barrier properties are maintained.
本発明の真空断熱材用フィルムを用いた真空断熱材の製造方法は従来公知の方法を用いることができ、例えば、真空断熱材用フィルムのシーラント層同士をシールして、袋を作製し、芯材を充填した後に袋中の空気を排出し真空状態にして開口部をシールすることで真空断熱材を得ることができる。芯材を充填する袋を作製する場合、二枚のフィルムを合わせて任意の三辺においてシーラント層同士をシールしても良いし、一枚のフィルムを折りたたみ、任意の二辺においてシーラント層同士をシールしても良い。 The manufacturing method of the vacuum heat insulating material using the film for vacuum heat insulating material of the present invention can use a conventionally known method. For example, the sealant layers of the film for vacuum heat insulating material are sealed together to produce a bag, and the core A vacuum heat insulating material can be obtained by discharging the air in the bag after filling the material, and making the vacuum state to seal the opening. When producing a bag filled with a core material, two films may be combined and sealant layers may be sealed on any three sides, or one film may be folded and sealant layers on any two sides. It may be sealed.
芯材は、従来公知のものを用いることができ、例えばグラスウール、グラスファイバー、アルミナ繊維、シリカアルミナ繊維、シリカ繊維、炭化ケイ素繊維、ロックウール、粉状のポリウレタン、シリカ、ポリスチレン、珪酸カルシウムやポリウレタン発泡体からなる群より選ばれる少なくとも一種であることが好ましい。 As the core material, conventionally known materials can be used, for example, glass wool, glass fiber, alumina fiber, silica alumina fiber, silica fiber, silicon carbide fiber, rock wool, powdered polyurethane, silica, polystyrene, calcium silicate and polyurethane. It is preferably at least one selected from the group consisting of foams.
また、真空断熱材の初期断熱性能および経時断熱性能をより一層向上させる場合は、ガス吸着剤や水分吸着剤等のゲッター物質を使用することも可能である。 Further, in order to further improve the initial heat insulation performance and the temporal heat insulation performance of the vacuum heat insulating material, it is possible to use a getter substance such as a gas adsorbent or a moisture adsorbent.
以下、実施例に基づいて本発明を更に詳しく説明するが、本発明の真空断熱材用フィルムは実施例に限定されるものではない。
なお、本発明の真空断熱材用フィルムの評価は次のようにして行った。
（１）屈曲疲労試験
２００ｍｍ×３００ｍｍの試験片の３００ｍｍ辺の両端を貼り合せて円筒状に丸め、筒状にした試験片の両端を固定ヘッドと駆動ヘッドで保持し、４４０度のひねりを加えながら固定ヘッドと駆動ヘッドの間隔を７インチから３．５インチに狭めて、さらにひねりを加えたままヘッドの間隔を１インチまで狭め、その後ヘッドの間隔を３．５インチまで広げて、さらにひねりを戻しながらヘッドの間隔を７インチまで広げるという往復運動を４０回／ｍｉｎの速さで、５０回行なう屈曲疲労試験の前後の試験片を用いて、酸素透過度（ガスバリア性）と水分透過度を測定した。
EXAMPLES Hereinafter, although this invention is demonstrated in more detail based on an Example, the film for vacuum heat insulating materials of this invention is not limited to an Example.
In addition, evaluation of the film for vacuum heat insulating materials of this invention was performed as follows.
(1) Bending fatigue test 200 mm x 300 mm test piece 300 mm sides are bonded together and rolled into a cylindrical shape, and both ends of the cylindrical test piece are held by a fixed head and a drive head, and a 440 degree twist is added. While narrowing the distance between the fixed head and the drive head from 7 inches to 3.5 inches, while further twisting, the head distance is narrowed to 1 inch, and then the head distance is increased to 3.5 inches and further twisted. The oxygen permeability (gas barrier property) and moisture permeability were measured using specimens before and after the bending fatigue test that was performed 50 times at a speed of 40 times / min. Was measured.
（２）酸素透過度
ＪＩＳ Ｋ ７１２６−２に準拠して測定した。
（３）水分透過度
１３０ｍｍ×１４０ｍｍの試験片を２枚重ね合わせて、５ｍｍ幅のシール幅で一辺を残してシールし、塩化カルシウム１５ｇを入れた後に残りの一辺をシールして袋体を作製した。温度４０℃、湿度９０％ＲＨの条件での前記袋体の重量変化を測定して水分透過度を測定した。
(2) Oxygen permeability Measured according to JIS K 716-2.
(3) Moisture permeability Two test pieces of 130 mm x 140 mm are overlapped and sealed with a seal width of 5 mm, leaving one side, and after putting 15 g of calcium chloride, the other side is sealed to produce a bag body did. The water permeability was measured by measuring the weight change of the bag under the conditions of a temperature of 40 ° C. and a humidity of 90% RH.
（実施例１）
保護層として厚さ１２μｍのポリエチレンテレフタレートフィルムと厚さ１５μｍのナイロンフィルム、ガスバリア層として厚さ６．５μｍのアルミニウム箔をこの順にウレタン系接着剤を用いて積層、接着した。次いで、接着性クッション層の厚さが２０μｍとなるようにカーテン状に押出した溶融状態の密度０．９１９ｇ／ｃｍ３の低密度ポリエチレン樹脂を用いて、シーラント層である厚さ４０μｍ、密度０．９２６ｇ／ｃｍ３の直鎖状低密度ポリエチレンフィルムと、上記積層体のアルミニウム箔面とを貼り合わせて、保護層、ガスバリア層、接着性クッション層及びシーラント層からなる真空断熱材用フィルムを得た。また、シーラント層側のアルミニウム箔にはアンカーコート層として二液硬化型エステルウレタンイソシアネートを塗布したものを用いた。
Example 1
A 12 μm thick polyethylene terephthalate film and a 15 μm thick nylon film as a protective layer and a 6.5 μm thick aluminum foil as a gas barrier layer were laminated and bonded in this order using a urethane-based adhesive. Next, using a low density polyethylene resin having a density of 0.919 g / cm 3 extruded in a curtain shape so that the thickness of the adhesive cushion layer becomes 20 μm, the sealant layer has a thickness of 40 μm and a density of 0.1 μm. A 926 g / cm 3 linear low density polyethylene film and the aluminum foil surface of the laminate were bonded together to obtain a film for a vacuum heat insulating material comprising a protective layer, a gas barrier layer, an adhesive cushion layer, and a sealant layer. . The aluminum foil on the sealant layer side was coated with a two-component curable ester urethane isocyanate as an anchor coat layer.
（比較例１）
保護層として厚さ１２μｍのポリエチレンテレフタレートフィルムと厚さ１５μｍのナイロンフィルム、ガスバリア層として厚さ６．５μｍのアルミニウム箔、シーラント層として厚さ６０μｍ、密度０．９２６ｇ／ｃｍ３の直鎖状低密度ポリエチレンフィルムをこの順にウレタン系接着剤を用いて積層、接着して真空断熱材用フィルムを得た。
(Comparative Example 1)
12 μm thick polyethylene terephthalate film and 15 μm thick nylon film as protective layer, 6.5 μm thick aluminum foil as gas barrier layer, 60 μm thick as sealant layer, linear low density of 0.926 g / cm 3 A polyethylene film was laminated and bonded in this order using a urethane-based adhesive to obtain a film for a vacuum heat insulating material.
実施例１及び比較例１で得られた真空断熱材用フィルムの評価結果を表１に示す。
なお、屈曲疲労試験前とは前述した屈曲疲労試験を行なう前に測定した酸素透過度および水分透過度の値であり、屈曲疲労試験後とは屈曲疲労試験を行なった後に測定した酸素透過度および水分透過度の値である。
Table 1 shows the evaluation results of the film for vacuum heat insulating material obtained in Example 1 and Comparative Example 1.
Note that before the bending fatigue test is the value of oxygen permeability and moisture permeability measured before the bending fatigue test described above, and after the bending fatigue test is the oxygen permeability measured after the bending fatigue test and It is a value of moisture permeability.
表１に示すように、本発明にかかる実施例１の真空断熱材用フィルムの屈曲疲労試験後の酸素透過度と水分透過度は比較例１の真空断熱材用フィルムよりも良好で耐屈曲性に優れているものであった。これは、ガスバリア層とシーラント層の貼合を接着剤でなく接着性クッション層を介して貼り合わせたことにより効果によるものである。 As shown in Table 1, the oxygen permeability and moisture permeability after the bending fatigue test of the vacuum insulation film of Example 1 according to the present invention are better than the vacuum insulation film of Comparative Example 1 and are flexible. It was excellent. This is due to the effect of bonding the gas barrier layer and the sealant layer through an adhesive cushion layer instead of an adhesive.
本発明の真空断熱材用フィルムを用いた真空断熱材は、冷蔵庫、電気ポット、炊飯器、自動販売機等の機器、温水器、浴槽、ユニットバス、便座等の住宅設備、床暖房、自然冷媒ヒートポンプ給湯機、低温輻射板等の住宅システム、外壁用断熱パネル等の住宅建材、クーラーボックス、ボトルケース等の生活用品等の断熱材として有効に用いることができる。 The vacuum heat insulating material using the film for a vacuum heat insulating material of the present invention includes a refrigerator, an electric pot, a rice cooker, a vending machine, etc., a water heater, a bathtub, a unit bath, a toilet such as a toilet seat, floor heating, a natural refrigerant. It can be effectively used as a heat insulating material for a household system such as a heat pump water heater, a housing system such as a low-temperature radiation plate, a heat insulating panel for an outer wall, a cooler box, a bottle case or the like.
１ 真空断熱材用フィルム
２ 保護層
３ ガスバリア層
４ シーラント層
５ 接着性クッション層
DESCRIPTION OF SYMBOLS 1 Film for vacuum
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260383A (en) * | 2014-08-20 | 2015-01-07 | 江苏斯瑞达新材料科技有限公司 | Production technology of high-toughness heat-insulation film |
| JP2017510763A (en) * | 2014-03-13 | 2017-04-13 | ヴァクテック アクチェンゲゼルシャフト | Vacuum insulation panel and container having vacuum insulation panel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06286045A (en) * | 1993-03-30 | 1994-10-11 | Toppan Printing Co Ltd | Laminated packing material for packing pillow |
| JPH09317986A (en) * | 1996-05-24 | 1997-12-12 | Toppan Printing Co Ltd | Vacuum heat insulating material |
| JPH11320741A (en) * | 1998-05-19 | 1999-11-24 | Dainippon Printing Co Ltd | Gas barrier multilayer heat sealing film and its manufacture |
| JP2001246711A (en) * | 1999-12-27 | 2001-09-11 | Toppan Printing Co Ltd | Laminate having pinhole resistance and packaging bag using it |
| JP2006007508A (en) * | 2004-06-24 | 2006-01-12 | Toppan Printing Co Ltd | Laminated packaging material having oxygen barrier properties and reduced in occurrence of pinhole and laminated packaging bag |
| JP2007326339A (en) * | 2006-06-09 | 2007-12-20 | Dainippon Printing Co Ltd | Laminate for vacuum heat insulation material, and vacuum heat insulation material |
| JP2010071303A (en) * | 2008-09-16 | 2010-04-02 | Panasonic Corp | Vacuum heat insulating material |
-
2010
- 2010-04-23 JP JP2010100039A patent/JP5600469B2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06286045A (en) * | 1993-03-30 | 1994-10-11 | Toppan Printing Co Ltd | Laminated packing material for packing pillow |
| JPH09317986A (en) * | 1996-05-24 | 1997-12-12 | Toppan Printing Co Ltd | Vacuum heat insulating material |
| JPH11320741A (en) * | 1998-05-19 | 1999-11-24 | Dainippon Printing Co Ltd | Gas barrier multilayer heat sealing film and its manufacture |
| JP2001246711A (en) * | 1999-12-27 | 2001-09-11 | Toppan Printing Co Ltd | Laminate having pinhole resistance and packaging bag using it |
| JP2006007508A (en) * | 2004-06-24 | 2006-01-12 | Toppan Printing Co Ltd | Laminated packaging material having oxygen barrier properties and reduced in occurrence of pinhole and laminated packaging bag |
| JP2007326339A (en) * | 2006-06-09 | 2007-12-20 | Dainippon Printing Co Ltd | Laminate for vacuum heat insulation material, and vacuum heat insulation material |
| JP2010071303A (en) * | 2008-09-16 | 2010-04-02 | Panasonic Corp | Vacuum heat insulating material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017510763A (en) * | 2014-03-13 | 2017-04-13 | ヴァクテック アクチェンゲゼルシャフト | Vacuum insulation panel and container having vacuum insulation panel |
| CN104260383A (en) * | 2014-08-20 | 2015-01-07 | 江苏斯瑞达新材料科技有限公司 | Production technology of high-toughness heat-insulation film |
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