JP3404962B2 - Multi-layer insulation - Google Patents
Multi-layer insulationInfo
- Publication number
- JP3404962B2 JP3404962B2 JP03686395A JP3686395A JP3404962B2 JP 3404962 B2 JP3404962 B2 JP 3404962B2 JP 03686395 A JP03686395 A JP 03686395A JP 3686395 A JP3686395 A JP 3686395A JP 3404962 B2 JP3404962 B2 JP 3404962B2
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- coating layer
- aluminum coating
- extruded
- heat insulating
- 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.)
- Expired - Fee Related
Links
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Thermal Insulation (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、液体水素や液体ヘリウ
ムなどの極低温流体を貯留するタンクや、超電導電磁石
などの断熱に用いられる多層断熱材に関するものであ
る。
【０００２】
【従来の技術】極低温技術の分野で用いられる多層断熱
材の代表的なものとして、従来、実公昭６０−２６９９
５号公報に記載されたものがある。
【０００３】上記、多層断熱材は、図７〜図１０に示す
ように、厚さ１が２５μｍのプラスチックフィルム２の
両面に、厚さ３が約１μｍのアルミ被膜層４を形成する
と共に、全体が曲面で構成されるお椀状をした押出加工
部５（径寸法にして５〜１０ｍｍ程度の大きさ）をプラ
スチックフィルム２に多数形成し、押出加工部５におけ
るアルミ被膜層４の厚さ６を平坦部における厚さ３より
も著しく薄くなるよう（ほぼ３００Å程度以下）に形成
したものである。尚、括弧内の数値は、上記公報には記
載されていないが、製品を実際に測定した結果得られた
数値であり、アルミ被膜層４の厚さ６を３００Å程度以
下に加工するためには、押出加工部５の径寸法を５〜１
０ｍｍ程度にする必要があるものと考えられる。
【０００４】上記多層断熱材は、例えば、液体水素や液
体ヘリウムなどの極低温流体を貯留するタンクや、超電
導電磁石などの外周を多重に包囲させることによって、
断熱を行わせるようになっている。
【０００５】そして、多重化された多層断熱材は、図９
に示すように、多数の押出加工部５によってプラスチッ
クフィルム２の層間が多数の室７に区切られることによ
り熱の対流による伝達を阻止し、又、表面に形成された
アルミ被膜層４により輻射による熱伝達を防止し、更
に、押出加工部５におけるアルミ被膜層４の厚さ６を平
坦部における厚さ３よりも著しく薄くなるよう形成した
ことにより図９に示すような押出加工部５から平坦部へ
の面方向１２の熱伝達を低減・阻止し得るようになって
いる。
【０００６】尚、上記多層断熱材は、図１０に示すよう
な、多数のお椀状の突起８を有するローラ９と、突起８
に対応する多数の小孔１０を有するローラ１１との間
に、アルミ被膜層４を施したプラスチックフィルム２を
通すことによって加工される。
【０００７】
【発明が解決しようとする課題】しかしながら、上記従
来の多層断熱材には、以下のような問題があった。
【０００８】即ち、押出加工部５におけるアルミ被膜層
４の厚さ６を平坦部における厚さ３よりも著しく薄くな
るよう製造することは、単に多数の突起８を有するロー
ラ１１と、多数の小孔１０を有するローラ１１との間
に、アルミ被膜層４を施したプラスチックフィルム２を
通すことだけではできず、ローラ１１の突起８と小孔１
０との間隙を高い精度で制御するなどしなければならな
いため、実際には加工が困難である。
【０００９】又、押出加工部５におけるアルミ被膜層４
の厚さ６を平坦部における厚さ３よりも著しく薄くなる
よう形成することにより、図９に示すような押出加工部
５から平坦部への面方向１２の熱伝達を小さくすること
を図っているが、実際には、上記した面方向１２の熱伝
達を小さくしても、押出加工部５とそれに隣接する多層
断熱材との接触による矢印方向１３の熱伝達が大きいま
まなので、押出加工部５におけるアルミ被膜層４の厚さ
６を薄くすることによる効果が余り認められない。
【００１０】本発明は、上述の実情に鑑み、加工が容易
で、より断熱効果の高い多層断熱材を提供することを目
的とするものである。
【００１１】
【課題を解決するための手段】本発明は、厚さが６〜４
μｍの樹脂フィルムの両面に厚さが約６００Å程度のア
ルミ被膜層を形成すると共に、頂部が平坦な押出加工部
を樹脂フィルムに対し多数形成し、押出加工部における
アルミ被膜層の厚さを平坦部における厚さと均等にする
と共に、押出加工部の傾斜面部におけるアルミ被膜層に
幅がおよそ１μｍ、長さがおよそ６０μｍ程度の細かい
スリットを多数形成したことを特徴とする多層断熱材に
かかるものである。
【００１２】
【作用】本発明の作用は以下の通りである。
【００１３】対象物を多層断熱材で多重に包囲すること
により、断熱が行われる。
【００１４】この際、厚さが６〜４μｍの樹脂フィルム
を用いたので、全体が軽量化され、互いの接触面圧が低
下されるので、接触方向の熱伝達が低下される。
【００１５】又、押出加工部の傾斜面部におけるアルミ
被膜層に幅がおよそ１μｍ、長さがおよそ６０μｍ程度
の細かいスリットを多数形成したので、押出加工部から
平坦部への面方向の熱伝達が低下される。
【００１６】以上により、従来の２〜３倍もの高い断熱
性能が得られるようになる。
【００１７】又、スリット部分は、輻射の代表的な波長
よりも狭くなるようにしているので、スリットからの輻
射の透過を制限することができる。
【００１８】尚、アルミ被膜層全体を薄くし、且つ、傾
斜面部に相当する部分のみを集中的に塑性変形させるこ
とにより、傾斜面部に対し、幅がおよそ１μｍ、長さが
およそ６０μｍ程度の所望の大きさのスリットを容易に
形成することが可能となる。
【００１９】
【実施例】以下、本発明の実施例を図面を参照しつつ説
明する。
【００２０】図１〜図６は、本発明の一実施例である。
【００２１】厚さ１４が６〜４μｍのプラスチックフィ
ルムやポリエステルフィルムやポリイミドフィルムなど
の樹脂フィルム１５の両面に、厚さ１６が約６００Å程
度のアルミ被膜層１７を形成すると共に、頂部１８が平
坦で、高さ寸法１９がほぼ０．２ｍｍ、径寸法２０がほ
ぼ２ｍｍ程度の大きさの押出加工部２１を、樹脂フィル
ム１５に対し、互いに６ｍｍ程度の間隔を置いて多数形
成し、押出加工部２１におけるアルミ被膜層１７の厚さ
１６を平坦部２２における厚さ１６と均等にすると共
に、押出加工部２１の傾斜面部２３におけるアルミ被膜
層１７に幅２４がおよそ１μｍ、長さ２５がおよそ６０
μｍ程度の細かいスリット２６を多数形成する。
【００２２】上記多層断熱材は、図５に示すように、真
空チャンバ２７内に配置された巻戻ロール２８から高速
で巻戻された樹脂フィルム１５を、案内ロール２９を用
いて、溶融したアルミ３０を収容する容器３１の上方へ
導き、冷却ロール３２で冷却した後、巻取ロール３３で
巻取るという作業を、両面に対して１〜２回行うことに
より、樹脂フィルム１５の両面にアルミ被膜層１７を蒸
着形成し、次に、多数の截頭円錐状或いは円柱状の突起
３４を有するローラ３５と、突起３４に対応する多数の
小孔３６を有するローラ３７との間に、アルミ被膜層１
７を施した樹脂フィルム１５を通して、傾斜面部２３に
相当する部分のみを集中的に塑性変形させ、押出加工部
２１を形成することにより、製造する。
【００２３】次に、作動について説明する。
【００２４】上記多層断熱材は、例えば、液体水素や液
体ヘリウムなどの極低温流体を貯留するタンクや、超電
導電磁石などの外周を多重に包囲させることによって、
断熱を行わせる。
【００２５】そして、多重化された多層断熱材は、多数
の押出加工部２１によって樹脂フィルム１５の層間が多
数の室７に区切られることにより熱の対流による伝達を
阻止することができる。
【００２６】又、表面に形成されたアルミ被膜層１７に
より輻射による熱伝達を防止することができる。
【００２７】特に、押出加工部２１の傾斜面部２３に形
成したスリット２６の幅２４を、１μｍと、輻射の代表
的な波長（温度７７Ｋで３８μｍ、温度２０Ｋで１４５
μｍ、温度４．２Ｋで６９０μｍ）よりも狭くなるよう
にしたので、スリット２６部分からの輻射の透過を防止
することができる。これに対して、図７〜図１０のもの
では、押出加工部５におけるアルミ被膜層４の厚さ６が
３００Å程度以下と極く薄くなっているので、押出加工
部５から輻射が透過されてしまう可能性がある。
【００２８】尚、アルミ被膜層１７全体の厚さ１６を薄
くし、且つ、傾斜面部２３に相当する部分のみを集中的
に塑性変形させて押出加工部２１を形成するようにした
ことにより、傾斜面部２３に対し、幅２４がおよそ１μ
ｍ、長さ２５がおよそ６０μｍ程度の所望の大きさのス
リット２６を容易に形成することが可能となる。
【００２９】加えて、プラスチックフィルムやポリエス
テルフィルムやポリイミドフィルムなどの樹脂フィルム
１５の厚さ１４を６〜４μｍとし、アルミ被膜層１７の
厚さ１６を約６００Å程度として、全体の軽量化を図っ
ているので、押出加工部２１と隣接する多層断熱材との
接触圧が大幅に低下され、接触による熱伝達が低下され
る。
【００３０】又、押出加工部２１の傾斜面部２３に形成
したスリット２６により、押出加工部２１から平坦部２
２への面方向の熱伝達も低下される。
【００３１】このように、接触による熱伝達と面方向の
熱伝達を同時に低下することにより、従来の２〜３倍の
断熱性能が得られるようになる。
【００３２】そして、従来の２〜３倍もの高い断熱性能
が得られるため、少量で十分な効果が得られ、又、樹脂
フィルム１５を６〜４μｍと極く薄くしたため取扱が簡
単となるので、全体として液体水素や液体ヘリウムなど
の極低温流体を貯留するタンクや、超電導電磁石などに
対する施工が大幅に容易化される。
【００３３】樹脂フィルム１５は、図５に示す蒸着の工
程で、熱によって樹脂フィルム１５が溶けてしまう可能
性があるので、４μｍより薄くするのは困難である。
【００３４】尚、本発明は、上述の実施例にのみ限定さ
れるものではなく、本発明の要旨を逸脱しない範囲内に
おいて種々変更を加え得ることは勿論である。
【００３５】
【発明の効果】以上説明したように、本発明の多層断熱
材によれば、加工を容易とし、より断熱効果を高めるこ
とができるという優れた効果を奏し得る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank for storing a cryogenic fluid such as liquid hydrogen and liquid helium, and a multilayer heat insulating material used for heat insulation of a superconducting electromagnet. It is. 2. Description of the Related Art As a typical example of a multilayer heat insulating material used in the field of cryogenic technology, a conventional heat insulating material is disclosed in Japanese Utility Model Publication No.
No. 5 is disclosed. As shown in FIGS. 7 to 10, the above-mentioned multilayer heat insulating material has an aluminum coating layer 4 having a thickness of about 1 μm 4 on both sides of a plastic film 2 having a thickness 1 of 25 μm. A large number of extruded portions 5 (having a diameter of about 5 to 10 mm) having a bowl shape formed of curved surfaces are formed on the plastic film 2, and the thickness 6 of the aluminum coating layer 4 in the extruded portions 5 is reduced. It is formed so as to be significantly thinner than the thickness 3 in the flat part (about 300 ° or less). The values in parentheses are not described in the above-mentioned publications, but are values obtained as a result of actually measuring the product. In order to process the thickness 6 of the aluminum coating layer 4 to about 300 mm or less, , The diameter of the extruded portion 5 is 5-1
It is thought that it is necessary to set it to about 0 mm. [0004] The above-mentioned multilayer heat insulating material is formed by surrounding a tank for storing a cryogenic fluid such as liquid hydrogen or liquid helium or a superconducting electromagnet in multiple layers.
Insulation is performed. [0005] The multiplexed multi-layer insulation material is shown in FIG.
As shown in FIG. 5, the layers of the plastic film 2 are divided into a large number of chambers 7 by a large number of extruded portions 5 to prevent the transfer of heat by convection, and the aluminum coating layer 4 formed on the surface causes radiation. The heat transfer is prevented, and the thickness 6 of the aluminum coating layer 4 in the extruded portion 5 is formed so as to be significantly smaller than the thickness 3 in the flat portion. The heat transfer in the plane direction 12 to the portion can be reduced or prevented. Incidentally, the above-mentioned multilayer heat insulating material comprises a roller 9 having a large number of bowl-shaped projections 8 as shown in FIG.
Is processed by passing the plastic film 2 provided with the aluminum coating layer 4 between a roller 11 having a large number of small holes 10 corresponding to. [0007] However, the above-mentioned conventional multilayer insulation material has the following problems. That is, to manufacture the aluminum coating layer 4 in the extruded portion 5 so that the thickness 6 is significantly smaller than the thickness 3 in the flat portion is simply to provide the roller 11 having many projections 8 and the small It is not possible to simply pass the plastic film 2 provided with the aluminum coating layer 4 between the roller 11 having the hole 10 and the protrusion 8 of the roller 11 and the small hole 1.
Since it is necessary to control the gap with zero with high precision, it is actually difficult to machine. The aluminum coating layer 4 in the extruded portion 5
By forming the thickness 6 to be significantly smaller than the thickness 3 in the flat portion, heat transfer in the surface direction 12 from the extruded portion 5 to the flat portion as shown in FIG. 9 is reduced. However, in practice, even if the heat transfer in the surface direction 12 described above is reduced, the heat transfer in the arrow direction 13 due to the contact between the extruded portion 5 and the multilayer heat insulating material adjacent thereto remains large. The effect of reducing the thickness 6 of the aluminum coating layer 4 in 5 is not so much recognized. The present invention has been made in view of the above circumstances, and has as its object to provide a multilayer heat insulating material which is easy to process and has a higher heat insulating effect. According to the present invention, a thickness of 6 to 4 mm is provided.
An aluminum coating layer with a thickness of about 600 mm is formed on both sides of a resin film of μm, and a large number of extruded portions with flat tops are formed on the resin film, and the thickness of the aluminum coating layer in the extruded portion is flattened. A multi-layered heat insulating material characterized in that a number of fine slits having a width of about 1 μm and a length of about 60 μm are formed in an aluminum coating layer on an inclined surface portion of an extruded portion while making the thickness equal to the thickness of the extruded portion. is there. The operation of the present invention is as follows. [0013] Insulation is performed by surrounding the object in multiple layers with a multilayer heat insulating material. At this time, since the resin film having a thickness of 6 to 4 μm is used, the weight is reduced as a whole, and the contact surface pressure is reduced, so that the heat transfer in the contact direction is reduced. Further, since a large number of fine slits having a width of about 1 μm and a length of about 60 μm are formed in the aluminum coating layer on the inclined surface of the extruded portion, the heat transfer in the surface direction from the extruded portion to the flat portion is reduced. Be lowered. As described above, a heat insulation performance as high as two to three times as high as that of the related art can be obtained. Further, since the slit portion is made narrower than a typical wavelength of radiation, transmission of radiation from the slit can be restricted. The entire aluminum coating layer is made thinner and only the portion corresponding to the inclined surface is plastically intensively deformed, so that the desired width of approximately 1 μm and the length of approximately 60 μm with respect to the inclined surface is obtained. Can be easily formed. Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show an embodiment of the present invention. An aluminum coating layer 17 having a thickness of about 600 ° is formed on both sides of a resin film 15 such as a plastic film, a polyester film or a polyimide film having a thickness 14 of 6 to 4 μm, and a top 18 is flat. A large number of extruded portions 21 having a height 19 of approximately 0.2 mm and a diameter 20 of approximately 2 mm are formed on the resin film 15 at intervals of about 6 mm from each other. The thickness 16 of the aluminum coating layer 17 in the above is made equal to the thickness 16 in the flat portion 22, and the width 24 of the aluminum coating layer 17 on the inclined surface portion 23 of the extruded portion 21 is approximately 1 μm, and the length 25 is approximately 60
Many fine slits 26 of about μm are formed. As shown in FIG. 5, the above-mentioned multilayer heat insulating material is formed by using a guide roll 29 to melt a resin film 15 rewound from a rewind roll 28 disposed in a vacuum chamber 27 at high speed. The operation of leading the resin film 15 to the upper side of the container 31 containing the resin film 15, cooling it with the cooling roll 32, and winding it up with the winding roll 33 once or twice is performed on both surfaces of the resin film 15. The layer 17 is formed by vapor deposition, and then an aluminum coating layer is provided between a roller 35 having a number of truncated conical or cylindrical protrusions 34 and a roller 37 having a number of small holes 36 corresponding to the protrusions 34. 1
Through the resin film 15 having been subjected to 7, only the portion corresponding to the inclined surface portion 23 is intensively plastically deformed to form the extruded portion 21, thereby manufacturing the semiconductor device. Next, the operation will be described. The above-mentioned multilayer heat insulating material is provided by, for example, surrounding a tank for storing a cryogenic fluid such as liquid hydrogen or liquid helium or a superconducting electromagnet in multiple layers.
Let them be insulated. In the multiplexed multilayer heat insulating material, since the layers of the resin film 15 are divided into a large number of chambers 7 by a large number of extruded portions 21, transmission by heat convection can be prevented. Further, heat transfer due to radiation can be prevented by the aluminum coating layer 17 formed on the surface. In particular, the width 24 of the slit 26 formed in the inclined surface portion 23 of the extruded portion 21 is set to 1 μm and a typical wavelength of radiation (38 μm at 77K and 145 μm at 20K).
μm and 690 μm at a temperature of 4.2 K), so that transmission of radiation from the slit 26 can be prevented. On the other hand, in the case of FIGS. 7 to 10, the thickness 6 of the aluminum coating layer 4 in the extruded portion 5 is extremely thin, about 300 ° or less, so that radiation is transmitted from the extruded portion 5. May be lost. The extruded portion 21 is formed by reducing the thickness 16 of the entire aluminum coating layer 17 and intensively plastically deforming only the portion corresponding to the inclined surface portion 23. The width 24 is approximately 1 μ with respect to the surface portion 23.
It is possible to easily form a slit 26 having a desired size of m and a length 25 of about 60 μm. In addition, the thickness 14 of the resin film 15 such as a plastic film, a polyester film or a polyimide film is set to 6 to 4 μm, and the thickness 16 of the aluminum coating layer 17 is set to about 600 ° to reduce the overall weight. As a result, the contact pressure between the extruded portion 21 and the adjacent multilayer heat insulating material is significantly reduced, and the heat transfer due to the contact is reduced. The slit 26 formed in the inclined surface 23 of the extruded portion 21 causes the flat portion 2
The heat transfer in the in-plane direction to 2 is also reduced. As described above, by simultaneously reducing the heat transfer due to the contact and the heat transfer in the plane direction, the heat insulating performance two to three times as much as the conventional one can be obtained. Since the heat insulation performance as high as two to three times that of the conventional one can be obtained, a sufficient effect can be obtained with a small amount. In addition, since the resin film 15 is extremely thin as 6 to 4 μm, the handling becomes simple. As a whole, the construction of a tank for storing a cryogenic fluid such as liquid hydrogen or liquid helium, a superconducting electromagnet, etc. is greatly facilitated. Since the resin film 15 may be melted by heat in the vapor deposition step shown in FIG. 5, it is difficult to make the resin film 15 thinner than 4 μm. It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the scope of the present invention. As described above, according to the multilayer heat insulating material of the present invention, it is possible to obtain excellent effects that processing can be facilitated and the heat insulating effect can be further enhanced.
【図面の簡単な説明】
【図１】本発明の一実施例の概略全体斜視図である。
【図２】図１の部分平面図である。
【図３】図２の側面図である。
【図４】図３の部分拡大図である。
【図５】蒸着工程の概略側面図である。
【図６】押出加工部を加工する工程の概略側面図であ
る。
【図７】従来例の概略全体斜視図である。
【図８】図７のＶＩＩＩ−ＶＩＩＩ矢視図である。
【図９】多層断熱材を多層に施工した状態を示す断面図
である。
【図１０】押出加工部を加工する工程の概略正面図であ
る。
【符号の説明】
１４ 厚さ
１５ 樹脂フィルム
１６ 厚さ
１７ アルミ被膜層
１８ 頂部
２１ 押出加工部
２２ 平坦部
２３ 傾斜面部
２４ 幅
２５ 長さ
２６ スリットBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic overall perspective view of one embodiment of the present invention. FIG. 2 is a partial plan view of FIG. FIG. 3 is a side view of FIG. 2; FIG. 4 is a partially enlarged view of FIG. 3; FIG. 5 is a schematic side view of a vapor deposition step. FIG. 6 is a schematic side view of a step of processing an extruded portion. FIG. 7 is a schematic overall perspective view of a conventional example. FIG. 8 is a view taken in the direction of arrows VIII-VIII in FIG. 7; FIG. 9 is a cross-sectional view showing a state in which a multilayer heat insulating material is applied in multiple layers. FIG. 10 is a schematic front view of a step of processing an extruded portion. [Description of Signs] 14 Thickness 15 Resin film 16 Thickness 17 Aluminum coating layer 18 Top part 21 Extruded part 22 Flat part 23 Inclined surface part 24 Width 25 Length 26 Slit
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ // Ｆ１７Ｃ 3/04 Ｆ１７Ｃ 3/04 Ｚ (72)発明者 高橋 可久夫 神奈川県横浜市磯子区新中原町１番地 石川島播磨重工業株式会社 技術研究所 内 (72)発明者 山口 方士 神奈川県横浜市磯子区新中原町１番地 石川島播磨重工業株式会社 技術研究所 内 (72)発明者 中島 雅祐 神奈川県横浜市磯子区新中原町１番地 石川島播磨重工業株式会社 技術研究所 内 (56)参考文献 特開 昭62−49097（ＪＰ，Ａ) 実開 平３−103734（ＪＰ，Ｕ) 実開 昭64−7993（ＪＰ，Ｕ) 実公 昭60−26995（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B32B 1/00 - 35/00 F16L 59/00 - 59/02 F17C 3/02 - 3/04 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI // F17C 3/04 F17C 3/04 Z (72) Inventor Kakuo Takahashi No. 1 Shinnakaharacho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Harima Ishikawajima Heavy Industry Co., Ltd.Technical Research Laboratory (72) Inventor Masayoshi Yamaguchi 1 Shinnakaharacho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Ishikawajima-Harima Heavy Industries Co., Ltd.Technical Research Laboratory Co., Ltd. (72) Inventor Masayuki Nakajima 1 Haramachi Ishikawajima-Harima Heavy Industries, Ltd. Technical Research Institute (56) References JP-A-62-49097 (JP, A) JP-A-3-103734 (JP, U) JP-A 64-7993 (JP, U) 60-26995 (JP, Y1) (58) Fields investigated (Int. Cl. 7 , DB name) B32B 1/00-35/00 F16L 59/00-59/02 F17C 3/02-3 / 04
Claims (1)
に厚さが約６００Å程度のアルミ被膜層を形成すると共
に、頂部が平坦な押出加工部を樹脂フィルムに対し多数
形成し、押出加工部におけるアルミ被膜層の厚さを平坦
部における厚さと均等にすると共に、押出加工部の傾斜
面部におけるアルミ被膜層に幅がおよそ１μｍ、長さが
およそ６０μｍ程度の細かいスリットを多数形成したこ
とを特徴とする多層断熱材。(57) [Claims 1] An aluminum coating layer having a thickness of about 600 ° is formed on both surfaces of a resin film having a thickness of 6 to 4 μm, and an extruded portion having a flat top is formed by resin. A large number of films are formed on the film, the thickness of the aluminum coating layer in the extruded portion is made equal to the thickness in the flat portion, and the width of the aluminum coating layer on the inclined surface portion of the extruded portion is about 1 μm and the length is about 60 μm. A multilayer heat insulating material characterized by forming a large number of fine slits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03686395A JP3404962B2 (en) | 1995-02-24 | 1995-02-24 | Multi-layer insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03686395A JP3404962B2 (en) | 1995-02-24 | 1995-02-24 | Multi-layer insulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08230099A JPH08230099A (en) | 1996-09-10 |
| JP3404962B2 true JP3404962B2 (en) | 2003-05-12 |
Family
ID=12481630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03686395A Expired - Fee Related JP3404962B2 (en) | 1995-02-24 | 1995-02-24 | Multi-layer insulation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3404962B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7133198B2 (en) * | 2018-04-24 | 2022-09-08 | 国立研究開発法人宇宙航空研究開発機構 | Insulation material for non-contact transmission and method for non-contact transmission through insulation material for non-contact transmission |
-
1995
- 1995-02-24 JP JP03686395A patent/JP3404962B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08230099A (en) | 1996-09-10 |
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