JPH08142264A - Heat insulating coating material - Google Patents
Heat insulating coating materialInfo
- Publication number
- JPH08142264A JPH08142264A JP6306994A JP30699494A JPH08142264A JP H08142264 A JPH08142264 A JP H08142264A JP 6306994 A JP6306994 A JP 6306994A JP 30699494 A JP30699494 A JP 30699494A JP H08142264 A JPH08142264 A JP H08142264A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum foil
- heat insulating
- coating material
- insulating coating
- film
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- F16L59/08—Means for preventing radiation, e.g. with metal foil
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ダクト等の外面に直接
或いはダクト等を覆う断熱材の外面に巻き付けて使用す
る断熱用被覆材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating covering material which is used directly on the outer surface of a duct or the like or wound around the outer surface of a heat insulating material covering the duct or the like.
【０００２】[0002]
【従来の技術】例えば、ビルの空調機器間を連結するダ
クトはその中を暖気や冷気が通るため、外面を断熱材で
覆って熱の移動を防ぐ必要がある。従来、この種のダク
ト等の断熱用被覆材としては、アルミ箔の片面にポリエ
チレンテレフタレートフイルムをドライラミネートした
ものが使用されている。この種の被覆材は、アルミ箔に
よって腰をもたすと同時に箔表面で輻射熱を反射して断
熱するものであり、他方ポリエチレンテレフタレートフ
イルムはその優れた機械的特性と熱的特性により、断熱
用被覆材に強度を与えるとともに優れた断熱性、耐熱
性、耐寒性を持たせるものである。そして、アルミ箔の
側に粘着剤を塗布したり、或いはそのままダクト等に巻
付けて接着テープ等で固定するようにしていた。2. Description of the Related Art For example, in a duct connecting air conditioners of a building, warm air or cold air passes through the duct, so that it is necessary to cover the outer surface with a heat insulating material to prevent heat transfer. Conventionally, as a heat insulating coating material for this type of duct, a dry laminated polyethylene terephthalate film on one surface of an aluminum foil has been used. This kind of covering material is made of aluminum foil, and at the same time reflects the radiant heat on the foil surface to insulate it, while polyethylene terephthalate film has excellent mechanical and thermal properties. It imparts strength to the covering material as well as excellent heat insulation, heat resistance, and cold resistance. Then, an adhesive is applied to the side of the aluminum foil, or it is wound around a duct or the like and fixed with an adhesive tape or the like.
【０００３】[0003]
【発明が解決しようとする課題】ところで、この種断熱
用被覆材に用いるアルミ箔は、通常１５μｍ程度のもの
を使用しているためどうしてもピンホールの存在は避け
られない。そのため、被覆材を光に透かすとピンホール
の部分が孔開きのように見えて商品価値を低下させる。
そして、ピンホールが多いと被覆材の断熱性も劣るであ
ろうなどと誤解され、欠陥品扱いされる傾向にある。こ
れに対処するには、現在のところアルミ箔の厚みを増や
すしか方法がない（２５μｍ以上になるとピンホールが
大幅に減少すると言われている）が、コストアップを招
く欠陥がある。[SUMMARY OF THE INVENTION Incidentally, aluminum foil used for this type heat-insulating coating material, not just the presence of pinholes is avoided due to the use of those usually about 15 [mu] m. Therefore, when the covering material is transparent to the light, the pinhole portion looks like a perforation, which lowers the commercial value.
There is a tendency to be treated as a defective product by misunderstanding that the heat insulating property of the covering material may be poor if there are many pinholes. At present, the only way to deal with this is to increase the thickness of the aluminum foil (it is said that pinholes are significantly reduced when the thickness is 25 μm or more), but there is a defect that causes an increase in cost.
【０００４】また、従来の断熱材はアルミ箔の表面にポ
リエチレンテレフタレートフイルムをドライラミネート
しているため、接着剤層で光が吸収されてアルミ箔自身
に比べて反射率が低くなる。そのため、輻射熱の遮断が
劣り十分な保温、保冷効果が発揮できないきらいがあっ
た。Further, in the conventional heat insulating material, since the polyethylene terephthalate film is dry-laminated on the surface of the aluminum foil, light is absorbed by the adhesive layer and the reflectance is lower than that of the aluminum foil itself. Therefore, there is a tendency that the radiant heat is poorly blocked and a sufficient heat retaining / cooling effect cannot be exhibited.
【０００５】[0005]
【課題を解決するための手段】そこで本発明者は、種々
実験を続けた結果本発明を完成させるに到った。即ち本
発明の断熱用被覆材は、片面をアルミ蒸着等により金属
化したポリエチレンテレフタレートフイルムの金属面側
にアルミ箔をドライラミネートし、そのまま或いはアル
ミ箔の側に粘着剤（感圧接着剤）を塗布したものを適宜
な幅に裁断して巻き取ったものである。Therefore, the present inventor has completed the present invention as a result of continuing various experiments. That is, the heat insulating coating material of the present invention, the aluminum foil is dry-laminated on the metal surface side of the polyethylene terephthalate film whose one side is metallized by aluminum deposition or the like, and an adhesive (pressure sensitive adhesive) is used as it is or on the aluminum foil side. The applied material is cut into an appropriate width and wound up.
【０００６】本発明において、基材となるポリエチレン
テレフタレートフイルムは、密度が1.３５〜1.４５程度
の二軸延伸されたもので、この片面を蒸着等により金属
化する。一般に、二軸延伸ポリエチレンテレフタレート
フイルムは他の類似のフイルムに比べて透明度や蒸着強
度が大きくてより好ましいものである。用いるフイルム
の厚みは６〜５０μｍ程度、より好ましくは９〜１６μ
ｍ程度である。また延伸は公知の方法により行う。もっ
とも、二軸延伸に限らず、一軸延伸でも無延伸のもので
もよい。ただ、無延伸フイルムは二軸延伸フイルムに比
べて薄いものができないし透明度や機械的強度も幾分劣
るきらいはある。In the present invention, the polyethylene terephthalate film as the base material is a biaxially stretched film having a density of about 1.35 to 1.45, and one side thereof is metallized by vapor deposition or the like. Generally, a biaxially stretched polyethylene terephthalate film is more preferable because it has higher transparency and vapor deposition strength than other similar films. The thickness of the film used is about 6 to 50 μm, more preferably 9 to 16 μm.
m. The stretching is performed by a known method. However, the stretching is not limited to biaxial stretching, and may be uniaxial stretching or non-stretching. However, the unstretched film cannot be thinner than the biaxially stretched film, and its transparency and mechanical strength are somewhat inferior.
【０００７】金属化とはアルミニウム等の金属を、真空
蒸着やスパッター蒸着等公知の方法でフイルムの表面に
薄く付着させることを言う。金属層の厚みは１００〜９
００Å程度でよい。尚、蒸着等に先立ってフイルム表面
にアンカーコートを施しておくと、金属付着強度はさら
に向上する。Metallization refers to thinly adhering a metal such as aluminum to the surface of the film by a known method such as vacuum deposition or sputter deposition. The thickness of the metal layer is 100-9
About 00Å is enough. If an anchor coat is applied to the film surface prior to vapor deposition or the like, the metal adhesion strength will be further improved.
【０００８】次に、この金属化した二軸延伸（又は一軸
延伸、無延伸）ポリエチレンテレフタレートフイルムの
金属面側に、アルミ箔を接着剤を用いてドライラミネー
トする。この場合、アルミ箔のラミネート面は光沢面
（ツヤ面）、ダル面（ケシ面）のいずれでもよいが、好
ましくは裏面（ラミネートしない面）が光沢面となるよ
うに貼り合わせする。アルミ箔は、厚みは５〜５０μｍ
程度、より好ましくは７〜２０μｍ程度のものを使用す
る。ラミネートしたものは、アルミ箔にたとえピンホー
ルがあったとしても、金属化されたフイルムのため光の
透過が目立たたなくなる。従って、従来よりも厚みの薄
いアルミ箔が使用できるので、コストを低減できる。し
かも、断熱用被覆材表面（フイルム側）の光反射率は、
アルミ箔の表面ではなく蒸着面の影響をより多く受け
る。即ち、従来の接着剤を介したアルミ箔表面（たとえ
それが光沢面であっても）の反射率より、蒸着面の反射
率の方が大きいので、本発明の断熱用被覆材は反射率に
優れたものとなる。特に、アルミ箔のダル面をラミネー
トしたものは、断熱用被覆材の表面反射率（フイルム
側）は蒸着面、裏面反射率（アルミ箔側）はアルミ箔の
光沢面そのものになるので、両面とも反射率が大きくな
り、輻射熱を遮断する効果が大きくなる。Next, an aluminum foil is dry laminated on the metal surface side of the metallized biaxially stretched (or uniaxially stretched or unstretched) polyethylene terephthalate film using an adhesive. In this case, the laminated surface of the aluminum foil may be either a glossy surface (shiny surface) or a dull surface (poppy surface), but preferably the back surface (non-laminated surface) is laminated so as to be a glossy surface. Aluminum foil has a thickness of 5 to 50 μm
The average particle size is more preferably about 7 to 20 μm. Even if the aluminum foil has pinholes in the laminate, the metalized film makes light transmission inconspicuous. Therefore, the aluminum foil having a smaller thickness than the conventional one can be used, and the cost can be reduced. Moreover, the light reflectance on the surface of the heat insulating coating (film side) is
It is more affected by the evaporation surface rather than the surface of the aluminum foil. That is, since the reflectance of the vapor deposition surface is larger than the reflectance of the aluminum foil surface (even if it is a glossy surface) through the conventional adhesive, the heat insulating coating material of the present invention has a higher reflectance. It will be excellent. In particular, when the dull surface of aluminum foil is laminated, the surface reflectance (film side) of the heat insulating coating material is the vapor deposition surface, and the back surface reflectance (aluminum foil side) is the glossy surface of the aluminum foil itself. The reflectance increases and the effect of blocking radiant heat increases.
【０００９】このドライラミネートを施す方法は公知の
方法でよく、また接着剤としては脂肪属エステル系や芳
香属エステル・ウレタン系等の各種のものが使用でき
る。ラミネートに先立って、前記した蒸着面にトップコ
ートを施しておくと、ラミネート強度が更に向上する。The method for applying this dry lamination may be a known method, and various kinds of adhesives such as aliphatic ester type and aromatic ester / urethane type adhesives can be used. If a top coat is applied to the above-mentioned vapor deposition surface before laminating, the laminating strength is further improved.
【００１０】尚、必要に応じてアルミ箔側に粘着剤を塗
布するとか、外観を良くするために全体的あるいは部分
的にエンボス加工を施すとか、更にはフィルムとアルミ
箔の間に補強材を介挿してラミネートするようにしても
よい。補強材としては、フィラメントやコード或いはス
プリットヤーン等を縦緯に用いたネット状のもの等が好
適に用いられる。If necessary, a pressure sensitive adhesive may be applied to the aluminum foil side, or embossing may be applied to all or part of the aluminum foil to improve the appearance. Further, a reinforcing material may be provided between the film and the aluminum foil. You may make it interpose and laminate. As the reinforcing material, a net-shaped material using filaments, cords, split yarns or the like for the vertical weft is preferably used.
【００１１】以上のようにして得られたフイルム積層体
を、長さ方向に適宜巾例えば数〜十数ｃｍ程度に裁断し
て適宜長さに巻取り、製品とする。The film laminate obtained as described above is cut into a suitable width, for example, several to several tens of cm in the length direction, and wound into a suitable length to obtain a product.
【００１２】[0012]
（実施例 １）次に、本発明を図面に示す実施例に基づ
いて詳細に説明する。図１は、本発明にかかわる断熱用
被覆材１の一例を示す断面図である。まず、広幅長尺の
二軸延伸ポリエチレンテレフタレートフイルム２（密度
1.４１、厚み１２μ）に、常法によりアルミニウム金属
を蒸着して、厚み６００Å程度の金属層３を作る。次い
で、この金属層３の金属面側に、厚み３μｍ程度の芳香
属エステル・ウレタン系接着剤の層４を介して、厚み９
μｍのアルミ箔５の光沢面５１を常法によりドライラミ
ネートする。(Embodiment 1) Next, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 is a cross-sectional view showing an example of a heat insulating coating material 1 according to the present invention. First, wide and long biaxially stretched polyethylene terephthalate film 2 (density
1.41 and thickness 12 μ), aluminum metal is vapor-deposited by a conventional method to form a metal layer 3 having a thickness of about 600 liters. Then, on the metal surface side of the metal layer 3, a thickness of 9 μm is provided via a layer 4 of an aromatic ester / urethane adhesive having a thickness of about 3 μm.
The glossy surface 51 of the aluminum foil 5 of μm is dry laminated by a conventional method.
【００１３】このようにして得られたフイルム積層体
を、巾５ｃｍ程度に切断し巻取って断熱用被覆材１を得
る。この断熱用被覆材１は表面がポリエチレンテレフタ
レートフイルム２、裏面がアルミ箔のダル面５２で構成
されており、表１に示すように従来のものに比べて優れ
た光反射率を示す。更に、本発明の断熱用被覆材１は、
強靱性、光透過性、低熱伝導性等に優れた二軸延伸ポリ
エチレンテレフタレートフイルム２の性質と、衝撃や引
裂きには弱いが腰があって保形性に優れたアルミ箔５の
性質を併せ持つうえ、アルミ箔のピンホール５３がフイ
ルムの金属層３で隠蔽されて目立たなくなるなどの優れ
た性質を有する（表２参照）。The film laminated body thus obtained is cut into a width of about 5 cm and wound up to obtain a heat insulating coating material 1. The heat-insulating coating material 1 has a polyethylene terephthalate film 2 on the front surface and a dull surface 52 of aluminum foil on the back surface, and as shown in Table 1, exhibits a light reflectance superior to that of the conventional one. Furthermore, the heat insulating coating material 1 of the present invention is
In addition to having the properties of a biaxially stretched polyethylene terephthalate film 2 that is excellent in toughness, light transmission, low thermal conductivity, etc., and the properties of an aluminum foil 5 that is weak against impact and tear but is elastic and has excellent shape retention. The aluminum foil pinhole 53 is hidden by the metal layer 3 of the film so as to be inconspicuous (see Table 2).
【００１４】（実施例 ２）アルミ箔５のラミネート
を、実施例１と表裏反対にして行う以外は、実施例１と
同様にして断熱用被覆材６を得た。この断熱用被覆材６
は、裏面がアルミ箔５の光沢面５１からなるので、表１
に示すように更に高い反射率を示す。Example 2 A heat insulating coating material 6 was obtained in the same manner as in Example 1 except that the aluminum foil 5 was laminated in the opposite manner to Example 1. This insulation coating 6
Since the back surface consists of the glossy surface 51 of the aluminum foil 5, Table 1
Shows a higher reflectance.
【００１５】（比較例 １）次に、比較例として、前記
実施例のものと同じフイルム２を蒸着せずにそのままア
ルミ箔５の光沢面５１とラミネートする。符号４は接着
剤である。そして同様に裁断して断熱用被覆材７を得
る。(Comparative Example 1) Next, as a comparative example, the same film 2 as that of the above-described embodiment is directly laminated on the glossy surface 51 of the aluminum foil 5 without vapor deposition. Reference numeral 4 is an adhesive. And it cuts similarly and the heat insulating coating material 7 is obtained.
【００１６】表１に、各実施例、比較例及びアルミ箔の
表面及び裏面の光反射の程度を、光沢度で表したものを
示す。 表１ 断熱用被覆材の表面及び裏面の光沢度 実施例１ 実施例２ 比較例１ アルミ箔９μ アルミ箔15μ 表面 ４３９ ４５０ ３７９ ３９０ ３８２ 裏面 ７４ ４２０ ６６ ７０ ６７ 尚、光沢度の測定は、ＪＩＳ Ｚ８７４１−方法３に依
った。また、測定に供したサンプル数は５で、その平均
値を採った。Table 1 shows the degree of light reflection on the front surface and the back surface of each example, comparative example and aluminum foil, which is expressed by glossiness. Table 1 Glossiness of the front and back surfaces of the heat insulating coating material Example 1 Example 2 Comparative example 1 Aluminum foil 9μ Aluminum foil 15μ Surface 439 450 379 390 382 Back surface 74 420 420 66 70 67 The glossiness is measured according to JIS Z8741. -By Method 3. The number of samples used for measurement was 5, and the average value was taken.
【００１７】次に、各実施例、比較例で得られるフイル
ム積層体及びアルミ箔のピンホールの数を、表２に示
す。 表２ ピンホールの数（ｍ2 当たりの目立つピンホールの数） 実施例１ 実施例２ 比較例１ アルミ箔９μ アルミ箔15μ 個数 ０ ０ １０ ２３ ８Next, Table 2 shows the number of pinholes in the film laminates and aluminum foils obtained in each Example and Comparative Example. Table 2 Number of pinholes (number of conspicuous pinholes per m 2 ) Example 1 Example 2 Comparative example 1 Aluminum foil 9μ Aluminum foil 15μ Number 0 0 10 23 8
【００１８】[0018]
【発明の効果】以上説明したように、本発明の断熱用被
覆材は、空調機器のダクト等の断熱に用いられるもの
で、片面を金属化した二軸延伸ポリエチレンテレフタレ
ートフイルムの金属面側に、アルミ箔をドライラミネー
トして得たフイルム積層体を長さ方向に裁断して巻き取
ったものである。As described above, the heat insulating coating material of the present invention is used for heat insulation of ducts of air conditioners and the like, and on the metal surface side of a biaxially stretched polyethylene terephthalate film having one side metalized, A film laminate obtained by dry laminating an aluminum foil was cut in the length direction and wound up.
【００１９】従って、本発明の断熱用被覆材は、たとえ
アルミ箔自体にピンホールが存在しても金属化されたフ
イルムのため光の透過が目立たたなくなって商品価値を
低下させることもなく、また使用者に不信感や不快感を
与えることがない。そのため、従来よりも厚みの薄いア
ルミ箔が使用できるので、コストを低減できる。また、
断熱用被覆材の表面側では、光が蒸着面で反射されるの
で接着剤の影響を受けず、従来よりも大きな反射率が得
られる。Therefore, the heat-insulating coating material of the present invention does not reduce the commercial value because the light transmission is inconspicuous due to the metallized film even if the aluminum foil itself has pinholes. Moreover, the user does not feel distrust or discomfort. Therefore, the aluminum foil having a smaller thickness than the conventional one can be used, and the cost can be reduced. Also,
On the surface side of the heat insulating coating material, light is reflected by the vapor deposition surface, so that it is not affected by the adhesive and a higher reflectance than before can be obtained.
【００２０】更に、アルミ箔のダル面をラミネートした
ものは、断熱用被覆材の表面反射率（フイルム側）は蒸
着面、裏面反射率（アルミ箔側）はアルミ箔の光沢面そ
のものになるので、両面とも反射率が大きくなり、輻射
熱を遮断する効果がさらに大きくなり、十分な保温、保
冷効果を発揮できる。Further, in the case where the dull surface of aluminum foil is laminated, the surface reflectance (film side) of the heat insulating coating material is the vapor deposition surface and the back surface reflectance (aluminum foil side) is the glossy surface of the aluminum foil itself. The reflectance is increased on both surfaces, the effect of blocking radiant heat is further increased, and sufficient heat retention and cold insulation effects can be exhibited.
【００２１】しかも、従来品と比較して蒸着コストが加
わる程度で薄いアルミ箔を用いれば製造コストは殆ど変
わらず、断熱効果や外観が優れているため使用者に大き
な満足を与える等大きな利点を有するものである。ま
た、ダクトに限らずフレキシブルコンテナ等の断熱にも
使用できるものである。Moreover, if a thin aluminum foil is used to the extent that vapor deposition cost is added as compared with the conventional product, the manufacturing cost is almost the same, and since the heat insulating effect and the appearance are excellent, there are great advantages such as giving great satisfaction to the user. I have. Further, it can be used not only for ducts but also for heat insulation of flexible containers and the like.
【図１】本発明にかかわる断熱用被覆材の一例を示す断
面図である。FIG. 1 is a cross-sectional view showing an example of a heat insulating coating material according to the present invention.
【図２】本発明にかかわる断熱用被覆材の他の例を示す
断面図である。FIG. 2 is a sectional view showing another example of a heat insulating coating material according to the present invention.
【図３】従来の断熱用被覆材の断面図である。FIG. 3 is a cross-sectional view of a conventional heat insulating coating material.
１ 断熱用被覆材 ２ 二軸延伸ポリエチレンテレフタレートフイルム ３ 金属層 ４ 接着剤層 ５ アルミ箔 ５１ 光沢面 ５２ ダル面 ６ 断熱用被
覆材 ５３ ピンホール ７ 従来の断
熱用被覆材1 Heat Insulation Coating Material 2 Biaxially Stretched Polyethylene Terephthalate Film 3 Metal Layer 4 Adhesive Layer 5 Aluminum Foil 51 Glossy Surface 52 Dull Surface 6 Heat Insulation Coating Material 53 Pinhole 7 Conventional Heat Insulation Coating Material
Claims (1)
レートフイルムの金属面側に、アルミ箔をドライラミネ
ートしたことを特徴とする断熱用被覆材。1. A heat insulating coating material, which is obtained by dry laminating an aluminum foil on a metal surface side of a polyethylene terephthalate film having one surface metallized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6306994A JPH08142264A (en) | 1994-11-15 | 1994-11-15 | Heat insulating coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6306994A JPH08142264A (en) | 1994-11-15 | 1994-11-15 | Heat insulating coating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08142264A true JPH08142264A (en) | 1996-06-04 |
Family
ID=17963744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6306994A Pending JPH08142264A (en) | 1994-11-15 | 1994-11-15 | Heat insulating coating material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08142264A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017134862A1 (en) * | 2016-02-04 | 2017-08-10 | 三菱電機株式会社 | Heat-retaining body, vacuum heat insulation material, and method for manufacturing vacuum heat insulation material |
| JP2018076077A (en) * | 2016-11-07 | 2018-05-17 | 昭和電工パッケージング株式会社 | Laminated packing material |
-
1994
- 1994-11-15 JP JP6306994A patent/JPH08142264A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017134862A1 (en) * | 2016-02-04 | 2017-08-10 | 三菱電機株式会社 | Heat-retaining body, vacuum heat insulation material, and method for manufacturing vacuum heat insulation material |
| JP6266162B2 (en) * | 2016-02-04 | 2018-01-24 | 三菱電機株式会社 | Insulating body, vacuum heat insulating material, and method of manufacturing vacuum heat insulating material |
| JPWO2017134862A1 (en) * | 2016-02-04 | 2018-02-08 | 三菱電機株式会社 | Insulating body, vacuum heat insulating material, and method of manufacturing vacuum heat insulating material |
| CN108496037A (en) * | 2016-02-04 | 2018-09-04 | 三菱电机株式会社 | The manufacturing method of thermal insulator, vacuum heat insulation material and vacuum heat insulation material |
| US10493725B2 (en) | 2016-02-04 | 2019-12-03 | Mitsubishi Electric Corporation | Thermal insulator, vacuum insulation member, and method of manufacturing vacuum insulation member |
| JP2018076077A (en) * | 2016-11-07 | 2018-05-17 | 昭和電工パッケージング株式会社 | Laminated packing material |
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