JPH05331924A - Production of vacuum and heat-insulating panel - Google Patents
Production of vacuum and heat-insulating panelInfo
- Publication number
- JPH05331924A JPH05331924A JP4163637A JP16363792A JPH05331924A JP H05331924 A JPH05331924 A JP H05331924A JP 4163637 A JP4163637 A JP 4163637A JP 16363792 A JP16363792 A JP 16363792A JP H05331924 A JPH05331924 A JP H05331924A
- Authority
- JP
- Japan
- Prior art keywords
- metal foil
- surface material
- vacuum
- heat
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/242—Slab shaped vacuum insulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/10—Insulation, e.g. vacuum or aerogel insulation
Landscapes
- Thermal Insulation (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Building Environments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、表面材と裏面材とから
なる密封袋内に断熱材が真空充容され、かつ上記表面材
の外側に部分的に金属箔又は金属箔複合プラスチックフ
ィルムが貼着された真空断熱パネルを製造する方法に関
し、更に詳述すると、外部から真空断熱パネル内に気体
や水蒸気が侵入するのを防止し、かつ熱を反射すると共
に、外表面に沿って熱が伝導しにくい真空断熱パネルを
製造する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed bag consisting of a surface material and a back surface material, in which a heat insulating material is vacuum filled, and a metal foil or a metal foil composite plastic film is partially provided outside the surface material. The method for manufacturing the attached vacuum heat insulating panel will be described in further detail. It prevents gas and water vapor from entering the vacuum heat insulating panel from the outside, reflects heat, and heat along the outer surface. The present invention relates to a method of manufacturing a vacuum insulation panel that is difficult to conduct.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来、
真空断熱パネルとしては特開昭５８−５０３９４号公報
（断熱板の製造方法）に示されているように、通気性の
包装袋に粉末を充填し、これを外装袋に入れ、真空状態
で封入シールすることにより断熱パネルを製造する方法
が開示されているが、この外装袋をプラスチックのみか
ら形成すると、気体が外装袋の表面から侵入し、真空度
が劣化する（熱伝導率が悪くなる）という問題点があ
り、また、気体の侵入を防止するために金属箔を外装袋
に積層すると断熱パネルの周縁部において熱的に導通
し、断熱性能が悪くなるという問題点がある。2. Description of the Related Art Conventionally, the problems to be solved by the invention
As a vacuum heat insulating panel, as described in JP-A-58-50394 (method for manufacturing a heat insulating plate), a breathable packaging bag is filled with powder, placed in an outer bag, and sealed in a vacuum state. A method of manufacturing a heat insulating panel by sealing is disclosed. However, if this outer bag is made of only plastic, gas penetrates from the surface of the outer bag and the degree of vacuum deteriorates (the thermal conductivity deteriorates). When the metal foil is laminated on the outer bag to prevent the invasion of gas, there is a problem that the peripheral edge of the heat insulating panel is thermally conducted and the heat insulating performance is deteriorated.
【０００３】このため、本出願人は、先に特開昭６２−
３９４５５号公報（包装袋の製造方法）に示されている
ように外装袋の熱接着予定部もしくは熱接着部に金属箔
の接着を阻害する接着阻害層を形成し、その部分の金属
箔をカットし、除去する方法を提案したが、この製造方
法は工程が複雑であるため量産するのに難点があった。For this reason, the applicant of the present invention previously disclosed in Japanese Patent Laid-Open No. 62-
As described in Japanese Patent No. 39455 (Packaging bag manufacturing method), an adhesion-inhibiting layer that inhibits adhesion of a metal foil is formed in a heat-bonding planned portion or a heat-bonded portion of an outer bag, and the metal foil in that portion is cut. Then, a method of removing the metal has been proposed, but this manufacturing method has a difficulty in mass production because the process is complicated.
【０００４】そこで、本出願人は特願平３−２８２０８
６号、同３−２８２０８７号において、防気性、防湿性
に優れ、かつ熱の伝導を防止し得る真空断熱パネルとし
て、真空成形法によって所定の形状に成形され、かつ部
分的に金属箔複合プラスチックフィルムが貼着されたフ
ィルムを外装袋とした真空断熱パネルを提案している。
しかし、フィルムを所定の形状に成形する際にフィルム
が引き伸ばされるため、この部分のフイルムが薄くな
り、このため気体や水蒸気に対する防気性、防湿性が完
全ではない場合が生じ、改善の余地がある。Therefore, the present applicant has filed Japanese Patent Application No. 3-28208.
No. 6, No. 3-282087, a vacuum heat insulating panel excellent in air-proof property and moisture-proof property and capable of preventing heat conduction, which is formed into a predetermined shape by a vacuum forming method and is partially metal foil composite plastic. We have proposed a vacuum insulation panel that uses a film with a film attached as an outer bag.
However, since the film is stretched when the film is formed into a predetermined shape, the film in this portion becomes thin, and therefore the gas- and water-vapor-proof properties may not be perfect, and there is room for improvement. ..
【０００５】また、上記真空断熱パネルでは、外装袋と
してフィルムを引き伸ばし、これを所定の形状に成形し
たものを用いているため、フィルムの厚さに制限があ
り、このため、フィルムを厚くすることにより十分な防
気性、防湿性を得ることができない。そこで、超密防気
性、防湿性（ガス透過量（Ｏ2として）０．１ｃｃ／ｍ2
・２４ｈｒ・ａｔｍ以下、水蒸気透過量０．１ｇ／ｍ2
・２４ｈｒ・４０℃，９０％ＲＨ以下）を有する薄いフ
ィルムを用いることが必要であるが、成形性が良好で、
防気性、防湿性共に満足し得る構成のフィルムを得るこ
とが難しいという問題点もある。Further, in the above vacuum heat insulation panel, the film is stretched and formed into a predetermined shape as an outer bag, and therefore the thickness of the film is limited. Therefore, the film should be thickened. As a result, sufficient air and moisture resistance cannot be obtained. Therefore, ultra-dense and moisture-proof property (gas permeation amount (as O 2 ) 0.1 cc / m 2
・ 24 hr ・ atm or less, water vapor transmission rate 0.1 g / m 2
・ 24 hr ・ 40 ° C, 90% RH or less), it is necessary to use a thin film, but with good moldability,
There is also a problem that it is difficult to obtain a film having a structure that satisfies both the air proof property and the moisture proof property.
【０００６】本発明は上記事情に鑑みなされたもので、
高防気性、高防湿性、熱導通防止性に優れた真空断熱パ
ネルを得ることができる製造方法を提供することを目的
とする。The present invention has been made in view of the above circumstances.
An object of the present invention is to provide a manufacturing method capable of obtaining a vacuum heat insulating panel excellent in high air proofness, high moisture proofness, and heat conduction prevention.
【０００７】[0007]
【課題を解決するための手段】本発明者は上記目的を達
成するため、（１）表面材と裏面材とからなる密封袋内
に断熱材が真空充容され、かつ上記表面材の外面に部分
的に金属箔又は金属箔複合プラスチックフィルムが貼着
された真空断熱パネルを製造するに際し、凹状キャビテ
ィを有するインモールドインジェクション用の成形金型
の該キャビティ底面に金属箔又は金属箔複合プラスチッ
クフィルムを配置すると共に、加熱溶融した合成樹脂を
前記金型内に注入してインモールドインジェクション成
形を行い、上縁端にリング状鍔部を有する凹状形状の表
面材を形成すると同時に、上記金属箔又は金属箔複合プ
ラスチックフィルムを表面材の外面に熱接着し、次いで
この表面材の凹部内に断熱材を充容した後、上記表面材
を覆って裏面材を供給し、この表面材の鍔部に裏面材外
周縁部を真空下に熱接着密封することを特徴とする真空
断熱パネルの製造方法、及び（２）表面材と裏面材とか
らなる密封袋内に断熱材が真空充容され、かつ上記表面
材の外面に部分的に金属箔又は金属箔複合プラスチック
フィルムが貼着された真空断熱パネルを製造するに際
し、両端が小径でその中間部が大径に形成された柱状キ
ャビティを有するインモールドブロー成形用金型の該キ
ャビティの大径周壁部に金属箔又は金属箔複合プラスチ
ックフィルムを配置すると共に、加熱溶融した合成樹脂
を前記金型内に押し出してパリソンを形成し、ブロー成
形を行って中空成形体を得ると同時に、該成形体の外周
面に前記金属箔又は金属箔複合フィルムを熱接着し、次
いでこの成形体を半分に切断して、上端縁にリング状鍔
部を有し、外面に金属箔又は金属箔複合プラスチックフ
ィルムが接着された凹状形状の表面材を形成し、この表
面材の凹部内に断熱材を充容した後、上記表面材を覆っ
て裏面材を供給し、この表面材の鍔部に裏面材外周縁部
を真空下に熱接着密封することを特徴とする真空断熱パ
ネルの製造方法を提供する。In order to achieve the above object, the present inventor has (1) a heat-insulating material is vacuum filled in a hermetically sealed bag composed of a surface material and a back surface material, and the outer surface of the surface material is When manufacturing a vacuum insulation panel in which a metal foil or a metal foil composite plastic film is partially adhered, a metal foil or a metal foil composite plastic film is provided on the bottom surface of the cavity of a molding die for in-mold injection having a concave cavity. While placing, heat-melted synthetic resin is injected into the mold for in-mold injection molding to form a concave surface material having a ring-shaped collar portion at the upper edge, and at the same time, the metal foil or metal. The foil composite plastic film is heat-bonded to the outer surface of the surface material, and then the heat insulating material is filled in the recesses of the surface material. And (2) a method for manufacturing a vacuum heat insulating panel, characterized in that the outer peripheral edge of the back surface material is heat-bonded and sealed to the flange portion of the surface material under vacuum, and (2) in a sealing bag composed of the surface material and the back surface material. In producing a vacuum insulation panel in which the heat insulating material is vacuum filled and the metal foil or metal foil composite plastic film is partially adhered to the outer surface of the surface material, both ends have a small diameter and the middle portion has a large diameter. The metal foil or the metal foil composite plastic film is placed on the large-diameter peripheral wall portion of the cavity of the in-mold blow molding die having the columnar cavity formed in, and the heat-melted synthetic resin is extruded into the die. At the same time as forming a parison and performing blow molding to obtain a hollow molded body, the metal foil or metal foil composite film is heat-bonded to the outer peripheral surface of the molded body, and then this molded body is cut in half to After forming a concave surface material having a ring-shaped brim at the edge and a metal foil or a metal foil composite plastic film adhered to the outer surface, and filling a heat insulating material in the concave portion of the surface material, the above surface Provided is a method for manufacturing a vacuum heat-insulating panel, which comprises covering a material, supplying a back material, and thermally bonding and sealing an outer peripheral edge portion of the back material to a flange portion of the surface material under vacuum.
【０００８】[0008]
【作用】本発明によれば、上述したようにインモールド
インジェクション成形法又はインモールドブロー成形法
を採用したので、密封袋の表面材の厚さが均一となり、
また、密封袋の表面材を形成する際に、同時に金属箔又
は金属箔複合プラスチックフィルムを成形された表面材
の凹部外面に接着でき、この場合、金属箔又は金属箔複
合プラスチックフィルムは表面材のリング状鍔部、即ち
裏面材との接着部上には接着されず、凹部外面に部分接
着されるのみで、しかもこの部分接着の位置合わせも、
単に金型のキャビティ表面又は該キャビティ上に形成さ
れた樹脂層の上に置くだけでよく、自動化も容易であ
る。従って、周縁部において熱的導通のない真空断熱パ
ネルを簡単かつ確実に製造することができ、別途金属箔
又は金属箔複合プラスチックフィルムを貼着するための
工程を必要としないので、工程を簡略化することができ
る。According to the present invention, since the in-mold injection molding method or the in-mold blow molding method is adopted as described above, the surface material of the sealing bag has a uniform thickness,
Further, when forming the surface material of the hermetically sealed bag, at the same time, the metal foil or the metal foil composite plastic film can be adhered to the outer surface of the concave portion of the molded surface material. In this case, the metal foil or the metal foil composite plastic film is the surface material. The ring-shaped collar portion, that is, the portion to be adhered to the back material, is not adhered, only partially adhered to the outer surface of the recess, and the position of this partial adhesion is also adjusted.
It is only necessary to place it on the cavity surface of the mold or the resin layer formed on the cavity, and automation is easy. Therefore, it is possible to easily and surely manufacture a vacuum heat insulating panel having no thermal conduction in the peripheral portion, and it is not necessary to separately attach a metal foil or a metal foil composite plastic film, so that the process is simplified. can do.
【０００９】また、本発明により得られた真空断熱パネ
ルは、防気性、防湿性、熱反射性及び熱導通防止性が優
れ、しかもその性能が長期に亘って発揮されるものであ
る。Further, the vacuum heat insulating panel obtained by the present invention is excellent in air-proof property, moisture-proof property, heat reflection property and heat conduction preventing property, and further, its performance is exhibited for a long period of time.
【００１０】[0010]
〔第１実施例〕以下、本発明の一実施例につき図１〜５
を参照して説明する。図１は本発明により製造される真
空断熱パネルの一例を示したものであって、図中１は表
面材であり、この表面材１は、表面層２とシーラント層
３との構成を有している。この場合、表面層２として
は、ポリエステル、ポリアミド、ポリプロピレンなどの
耐熱性を有する樹脂にて形成することができる。また、
耐久年数等の性能が真空断熱パネルに要求される場合
は、アクリル樹脂、ポリビニリデン樹脂、ポリエチレ
ン、ＡＢＳ樹脂等を使用することができる。その厚さは
通常５〜４０μｍとすることができる。なお、表面層２
はこれら樹脂の単一層であっても複合層であってもよ
い。シーラント層３としては、ポリエチレン、ポリプロ
ピレン、エチレン−酢酸ビニル共重合体、ポリアクリロ
ニトリルなどにより厚さ１５〜３００μｍ程度に形成し
得るが、特に防気性、及び後述する断熱材の製造時に発
泡剤としてフロンガスを用いた場合、この残存フロンガ
スに対する耐性の点からポリアクリロニトリルが好まし
い。[First Embodiment] An embodiment of the present invention will now be described with reference to FIGS.
Will be described. FIG. 1 shows an example of a vacuum heat insulating panel manufactured according to the present invention, in which 1 is a surface material, and the surface material 1 has a structure of a surface layer 2 and a sealant layer 3. ing. In this case, the surface layer 2 can be formed of a resin having heat resistance such as polyester, polyamide and polypropylene. Also,
When performance such as durability is required for the vacuum heat insulating panel, acrylic resin, polyvinylidene resin, polyethylene, ABS resin or the like can be used. Its thickness can usually be 5-40 μm. The surface layer 2
May be a single layer or a composite layer of these resins. The sealant layer 3 may be formed of polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyacrylonitrile or the like to have a thickness of about 15 to 300 μm. In the case of using, polyacrylonitrile is preferable from the viewpoint of resistance to the residual CFC gas.
【００１１】ここで、表面材１としては、全体構成とし
てガス透過性の小さい樹脂と水蒸気透過性の小さい樹脂
の多層構成であることが好ましく、例えば図示の例では
ポリプロピレン等の水蒸気透過量が少ない樹脂からなる
層２ａ、酢酸ビニル共重合体（ＥＶＯＨ）等のガス透過
量が少ない樹脂からなる層２ｂ、ポリプロピレン等の水
蒸気透過量が少ない樹脂からなる層３を積層した構成と
されている。Here, it is preferable that the surface material 1 has a multi-layered structure of a resin having a small gas permeability and a resin having a small water vapor permeability as the whole structure. For example, in the illustrated example, the amount of water vapor permeation of polypropylene or the like is small. A layer 2a made of a resin, a layer 2b made of a resin having a small gas permeation amount such as vinyl acetate copolymer (EVOH), and a layer 3 made of a resin having a small water vapor transmission amount such as polypropylene are laminated.
【００１２】４は裏面材を示し、この裏面材４は、アル
ミニウム等の金属箔５の両面にそれぞれ接着剤層６，７
を介して表面層８及びシーラント層９を積層した構成を
有する。この場合、表面層８，シーラント層９は、表面
材１の表面層２，シーラント層３と同様の材料により同
様の厚さに形成し得る。なお、金属箔５は必要により省
略し得る。Reference numeral 4 denotes a back surface material. The back surface material 4 has adhesive layers 6, 7 on both sides of a metal foil 5 such as aluminum.
It has a structure in which the surface layer 8 and the sealant layer 9 are laminated via. In this case, the surface layer 8 and the sealant layer 9 can be formed of the same material as the surface layer 2 and the sealant layer 3 of the surface material 1 to the same thickness. The metal foil 5 can be omitted if necessary.
【００１３】１０は金属箔複合プラスチックフィルム
で、このフィルム１０は、アルミニウム等の金属箔１１
の両面にそれぞれ接着剤層１２，１３を介して表面層１
４及びシーラント層１５を積層したものである。この表
面層１４及びシーラント層１５は、上記表面層２，８及
びシーラント層３，９と同様の材料にて同様の厚さに形
成し得るが、この場合シーラント層１５としては、特に
表面材１の表面層２にポリエステル、ナイロンなどの熱
接着性を有する樹脂を用いた場合は、シランでグラフト
変性したエチレン−エチルアクリレート共重合樹脂が好
適である。なお、本発明では該フィルムの代りに金属箔
を用いることもできる。10 is a metal foil composite plastic film, and this film 10 is a metal foil 11 made of aluminum or the like.
The surface layer 1 through the adhesive layers 12 and 13 on both sides of the surface layer 1
4 and the sealant layer 15 are laminated. The surface layer 14 and the sealant layer 15 can be formed of the same material as the surface layers 2 and 8 and the sealant layers 3 and 9 to have the same thickness, but in this case, the sealant layer 15 is particularly the surface material 1. When a resin having thermal adhesiveness such as polyester or nylon is used for the surface layer 2 of 1., an ethylene-ethyl acrylate copolymer resin graft-modified with silane is suitable. In the present invention, a metal foil can be used instead of the film.
【００１４】図中１６は断熱材で、好ましくは平均粒子
径が８〜１２μｍのパーライト、ホワイトカーボン、Ｓ
ｉＯ2、ＳｉＣ等の粉末を通気性袋に収容したもの、連
通発泡ウレタンなどが使用される。In the figure, numeral 16 is a heat insulating material, preferably pearlite, white carbon, S having an average particle diameter of 8 to 12 μm.
A material in which a powder of iO 2 , SiC or the like is housed in a breathable bag, or a continuous urethane foam is used.
【００１５】上記のような真空断熱パネルを製造する場
合は、まず図２に示すように凹状キャビティ１７を有す
るインモールドインジェクションの金型１９の該キャビ
ティ１７の底面上に金属箔複合プラスチックフィルム１
０をその表面層１４を下にして載置し、次いで図３に示
すように樹脂注入口１９から、加熱溶融した樹脂を射出
注入する。この場合、表面材１の構成に応じ多層インジ
ェクションモールディング法を採用し得、例えば所用の
樹脂を順次射出し、図４に示すように表面材１を形成す
ることができる。この場合、この射出成形により表面材
１の外面に金属箔複合プラスチックフィルム１０が熱接
着される。次いで、表面材１の凹部に断熱材１６を充容
した後、図５に示すように、裏面材４をそのシーラント
層９を下にして断熱材１６上方に供給し、表面材１のリ
ング状鍔部１ｂと互いに対向する部分の一部と熱接着１
９，１９し、裏面材４の一端部を切断する。得られたパ
ネルをこの状態で真空シール機（図示せず）に入れ、真
空中にて表面材１のリング状鍔部１ｂのうち裏面材５と
未接着の部分を真空度１０-1 Ｔｏｒｒで熱接着して、内
部を真空状態とした密封袋を表面材１と裏面材５とによ
り形成する。When manufacturing a vacuum insulation panel as described above
First, it has a concave cavity 17 as shown in FIG.
The mold of the mold 19 for in-mold injection
Metal foil composite plastic film 1 on the bottom of the tee 17
0 with its surface layer 14 facing down and then shown in FIG.
Inject the heated and melted resin from the resin injection port 19
inject. In this case, depending on the structure of the surface material 1,
Method may be used, for example
Resin is sequentially injected to form the surface material 1 as shown in FIG.
You can In this case, the surface material produced by this injection molding
The metal foil composite plastic film 10 is heat contacted to the outer surface of 1.
Be worn. Next, fill the concave portion of the surface material 1 with the heat insulating material 16.
Then, as shown in FIG. 5, the backing material 4 is attached to the sealant.
With the layer 9 facing down, the upper surface of the heat insulating material 16 is supplied, and the surface material 1 is cooled.
Thermal bonding with a part of the portion facing the ring-shaped collar portion 1b 1
Then, one end of the backing material 4 is cut. Obtained par
Place the flannel in this state in a vacuum sealer (not shown)
In the air, with the back surface material 5 of the ring-shaped collar portion 1b of the surface material 1.
Vacuum degree 10 for unbonded part-1 Heat bonded with Torr,
The sealed bag whose part is in a vacuum state is formed by the front surface material 1 and the back surface material 5.
Form.
【００１６】なお、図４に示した工程において、断熱材
１６と共に、必要に応じて活性炭，塩化カルシウム，水
酸化カルシウム，ゼオライト等のゲッター剤の１種又は
２種以上を表面材１の凹部１ａに充容してもよい。In the step shown in FIG. 4, one or more gettering agents such as activated carbon, calcium chloride, calcium hydroxide, zeolite, etc. are optionally added together with the heat insulating material 16 to the recess 1a of the surface material 1. You may fill up with.
【００１７】〔第２実施例〕この例は、第１実施例にお
いて用いたインモールドインジェクションの金型の代わ
りにインモールドブロー成形用金型を用い、第１実施例
と同様の真空断熱パネルを製造するもので、この製造方
法においては、まず図６に示すような、上下端側が小径
でその中間部が大径を有する柱状キャビティ２０を有す
る金型２１（割金型２１ａ，２１ａ）の該キャビティ２
０の大径周壁部２０ａ上に金属箔複合プラスチックフィ
ルム１０をセットし、上記キャビティ２０内に図示して
いないがパリソンを押出し、次いで空気を吹き込むブロ
ー成形を行うものである。これにより、図７に示すよう
な上下端側が小径で中間部が大径の中空筒状成形体２２
が得られると共に、このブロー成形時に上記フィルム１
０が成形体２２の大径胴部外面に熱接着される。なおこ
の場合、表面材の構成に応じて多層ブロー成形法を採用
し得る。[Second Embodiment] In this embodiment, an in-mold blow molding die is used instead of the in-mold injection die used in the first embodiment, and a vacuum heat insulation panel similar to that of the first embodiment is used. In this manufacturing method, first, as shown in FIG. 6, a mold 21 (split molds 21a, 21a) having a columnar cavity 20 having a small diameter at the upper and lower ends and a large diameter at the middle is formed. Cavity 2
The metal foil composite plastic film 10 is set on the large diameter peripheral wall portion 20a of No. 0, a parison (not shown) is extruded into the cavity 20, and then blow molding is performed by blowing air. As a result, as shown in FIG. 7, a hollow cylindrical molded body 22 having a small diameter at the upper and lower ends and a large diameter at the middle portion
Is obtained, and at the time of this blow molding, the film 1
0 is thermally bonded to the outer surface of the large-diameter body portion of the molded body 22. In this case, a multilayer blow molding method can be adopted depending on the constitution of the surface material.
【００１８】次に、上記成形体２２を軸部方向に沿って
半割りし、第１実施例と同様の上端縁にリング状鍔部を
有する凹状形状の表面材を２個得る。以下、図４，５に
示したのと同様の工程により、密封袋内に断熱材１６が
充容され、かつ表面材１の外面に金属箔複合プラスチッ
クフィルム１０が部分接着された真空断熱パネルを得る
ことができるものである。Next, the molded body 22 is halved along the axial direction to obtain two concave surface materials having a ring-shaped collar portion at the upper edge similar to the first embodiment. A vacuum heat insulation panel in which the heat insulating material 16 is filled in the sealed bag and the metal foil composite plastic film 10 is partially adhered to the outer surface of the surface material 1 by the same steps as shown in FIGS. Is what you can get.
【００１９】以上のようにして得られる真空断熱パネル
は、下記実験例に示すように、ガスの透過量及び水蒸気
の透過量が少なく、熱伝導率が低く、また経時により熱
伝導率、真空度の劣化が非常に少ないものである。The vacuum heat-insulating panel obtained as described above has a small gas permeation amount and a water vapor permeation amount and a low thermal conductivity as shown in the following experimental examples. Is very little deteriorated.
【００２０】〔実験例〕表面材の構成 ＰＰ／ＥＶＯＨ／ＰＰ＝５０μｍ／３０μｍ／１５０μ
ｍ裏面材の構成 表面層： ポリエステルフィルム，１２μｍ 金属箔： アルミニウム，９μｍ シーラント層：ポリプロピレンフィルム，５０μｍ 接着剤層： ウレタン系接着剤金属箔複合プラスチックフィルムの構成 表面層： ポリエステルフィルム，１２μｍ 接着剤層： ウレタン系接着剤 金属箔： アルミニウム，１０μｍ シーラント層：シランでグラフト変性したエチレン−エ
チルアクリレート共重合樹脂、５０μｍ（溶融押し出し
ラミネート法により積層） 寸法： ４００ｍｍ×４００ｍｍ断熱材 発泡ウレタン樹脂，厚さ１５ｍｍ[Experimental Example] Structure of surface material PP / EVOH / PP = 50 μm / 30 μm / 150 μ
Structure of backing material : Surface layer of polyester: 12 μm Metal foil: Aluminum, 9 μm Sealant layer: Polypropylene film, 50 μm Adhesive layer: Composition of urethane adhesive metal foil composite plastic film Surface layer: Polyester film, 12 μm Adhesive layer : Urethane adhesive Metal foil: Aluminum, 10 μm sealant layer: Ethylene-ethyl acrylate copolymer resin graft-modified with silane, 50 μm (laminated by melt extrusion laminating method) Dimension: 400 mm × 400 mm Thermal insulation foam urethane resin, thickness 15 mm
【００２１】以上の材料を用い、上記図２〜５に示した
工程で真空断熱パネル（４２０ｍｍ×４４０ｍｍ）を製
造した。この場合、インモールドシンジェクション金型
のキャビティ底面は４００ｍｍ×４００ｍｍの大きさで
あり、深さは１５ｍｍである。Using the above materials, a vacuum heat insulating panel (420 mm × 440 mm) was manufactured by the steps shown in FIGS. In this case, the bottom surface of the cavity of the in-mold synching die has a size of 400 mm × 400 mm and a depth of 15 mm.
【００２２】更に真空シールは、真空度１０-2Ｔｏｒｒ
で行った。Further, the vacuum seal has a vacuum degree of 10 -2 Torr.
I went there.
【００２３】このようにして得られた真空断熱パネルの
ガス透過量（Ｏ2として）、水蒸気透過量、真空度及び
熱伝導率の経時変化を表１に示す。Table 1 shows the changes with time of the gas permeation amount (as O 2 ), the water vapor permeation amount, the degree of vacuum and the thermal conductivity of the vacuum heat insulating panel thus obtained.
【００２４】[0024]
【表１】 [Table 1]
【００２５】なお、第２実施例で示した工程で得た真空
断熱パネルも同様の効果を示した。The vacuum heat insulating panel obtained in the process shown in the second embodiment also showed the same effect.
【００２６】これら第１，第２実施例のパネルの製造方
法によれば、いずれもヒートブリッジを防止するために
設けた金属箔のない部分の寸法、厚みも設計通りに作る
ことができ、求める性能のものを簡単かつ確実に得るこ
とができるものであった。According to these panel manufacturing methods of the first and second embodiments, the size and thickness of the portion without the metal foil provided to prevent the heat bridge can be manufactured as designed and obtained. It was possible to easily and surely obtain high performance.
【００２７】これに対し、比較のためにフィルム（ＰＶ
Ｃ／ＰＶＤＣ／ＰＰ＝１５０μｍ／３０μｍ／３０μ
ｍ）を真空成形し、その底部にアルミ箔複合体を貼着し
た後、断熱材１６を充填し、裏面材５でもって真空度１
０-1Ｔｏｒｒ中でヒートシールし、真空断熱パネルを得
たが、これは真空成形条件によりフィルムの割れや極端
に薄い部分ができ、結果としてガスや水蒸気の透過量が
大きく、求める性能のパネルが得られない場合かあっ
た。On the other hand, for comparison, a film (PV
C / PVDC / PP = 150 μm / 30 μm / 30 μ
m) is vacuum formed, the aluminum foil composite is attached to the bottom of the m), then the heat insulating material 16 is filled, and the backside material 5 is used to make the degree of vacuum 1
We heat-sealed in 0 -1 Torr to obtain a vacuum heat insulation panel, which has cracks in the film and extremely thin parts due to vacuum forming conditions, resulting in a large amount of gas and water vapor permeation, and a panel with the required performance. I was not able to get it.
【００２８】[0028]
【発明の効果】本発明によれば、金属箔を部分的に貼着
した表面材をインモールド成形法によって作製したの
で、表面材の厚さが均一となり、このため長期に亘って
高防気性、高防湿性に優れた真空断熱パネルを得ること
ができる。According to the present invention, since the surface material to which the metal foil is partially adhered is produced by the in-mold molding method, the thickness of the surface material becomes uniform, and therefore, the high air-proof property is obtained for a long period of time. Thus, it is possible to obtain a vacuum heat insulating panel having high moisture resistance.
【図１】本発明により製造される真空断熱パネルの一例
を示す断面図である。FIG. 1 is a cross-sectional view showing an example of a vacuum heat insulation panel manufactured according to the present invention.
【図２】本発明の一実施例において、インモールドイン
ジェクション金型のキャビティ内に金属箔複合プラスチ
ックフィルムを配置した状態の概略断面図である。FIG. 2 is a schematic cross-sectional view showing a state in which a metal foil composite plastic film is arranged in a cavity of an in-mold injection mold in one embodiment of the present invention.
【図３】同例において、加熱溶融樹脂を注入した状態の
概略断面図である。FIG. 3 is a schematic cross-sectional view of a state in which a hot-melt resin is injected in the same example.
【図４】同例において、断熱材を供給した状態の概略断
面図である。FIG. 4 is a schematic cross-sectional view of a state in which a heat insulating material is supplied in the same example.
【図５】同例において、裏面材を供給した状態の概略断
面図である。FIG. 5 is a schematic cross-sectional view of a state in which a backing material is supplied in the same example.
【図６】図１に示した真空断熱パネルの他の製造方法に
おいて、インモールドブロー金型に金属箔複合プラスチ
ックフィルムを配置した状態の概略断面図である。FIG. 6 is a schematic cross-sectional view showing a state in which a metal foil composite plastic film is placed in an in-mold blow mold in another method for manufacturing the vacuum heat insulating panel shown in FIG.
【図７】同例において、金型に加熱溶融樹脂を吹き込ん
だ状態の概略断面図である。FIG. 7 is a schematic cross-sectional view of a mold in which a hot-melt resin is blown in the same example.
１ 表面材 １ａ 凹部 １ｂ リング状鍔部 ４ 裏面材 １０ 金属箔複合プラスチックフィルム １６ 断熱材 １８ 金型 ２０ キャビティ ２１ 金型 1 Surface Material 1a Recess 1b Ring-shaped Collar 4 Backside Material 10 Metal Foil Composite Plastic Film 16 Heat Insulation Material 18 Mold 20 Cavity 21 Mold
Claims (2)
熱材が真空充容され、かつ上記表面材の外面に部分的に
金属箔又は金属箔複合プラスチックフィルムが貼着され
た真空断熱パネルを製造するに際し、凹状キャビティを
有するインモールドインジェクション用の成形金型の該
キャビティ底面に金属箔又は金属箔複合プラスチックフ
ィルムを配置すると共に、加熱溶融した合成樹脂を前記
金型内に注入してインモールドインジェクション成形を
行い、上縁端にリング状鍔部を有する凹状形状の表面材
を形成すると同時に、上記金属箔又は金属箔複合プラス
チックフィルムを表面材の外面に熱接着し、次いでこの
表面材の凹部内に断熱材を充容した後、上記表面材を覆
って裏面材を供給し、この表面材の鍔部に裏面材外周縁
部を真空下に熱接着密封することを特徴とする真空断熱
パネルの製造方法。1. A vacuum heat insulation in which a heat insulating material is vacuum-filled in a sealed bag made of a surface material and a back material, and a metal foil or a metal foil composite plastic film is partially adhered to the outer surface of the surface material. When manufacturing a panel, a metal foil or a metal foil composite plastic film is placed on the bottom of the cavity of a molding die for in-mold injection having a concave cavity, and a synthetic resin heated and melted is injected into the die. In-mold injection molding is performed to form a concave surface material having a ring-shaped collar portion at the upper edge, and at the same time, the metal foil or metal foil composite plastic film is heat-bonded to the outer surface of the surface material, and then this surface material. After the heat insulating material is filled in the concave part of the above, the back surface material is supplied by covering the above surface material, and the outer peripheral edge of the back surface material is thermally bonded to the flange portion of this surface material under vacuum. A method for manufacturing a vacuum heat insulating panel, which comprises sealing.
熱材が真空充容され、かつ上記表面材の外面に部分的に
金属箔又は金属箔複合プラスチックフィルムが貼着され
た真空断熱パネルを製造するに際し、両端が小径でその
中間部が大径に形成された柱状キャビティを有するイン
モールドブロー成形用金型の該キャビティの大径周壁部
に金属箔又は金属箔複合プラスチックフィルムを配置す
ると共に、加熱溶融した合成樹脂を前記金型内に押し出
してパリソンを形成し、ブロー成形を行って中空成形体
を得ると同時に、該成形体の外周面に前記金属箔又は金
属箔複合フィルムを熱接着し、次いでこの成形体を半分
に切断して、上端縁にリング状鍔部を有し、外面に金属
箔又は金属箔複合フィルムが接着された凹状形状の表面
材を形成し、この表面材の凹部内に断熱材を充容した
後、上記表面材を覆って裏面材を供給し、この表面材の
鍔部に裏面材外周縁部を真空下に熱接着密封することを
特徴とする真空断熱パネルの製造方法。2. A vacuum heat insulation in which a heat insulating material is vacuum-filled in a sealed bag made of a surface material and a back material, and a metal foil or a metal foil composite plastic film is partially adhered to the outer surface of the surface material. When manufacturing a panel, a metal foil or a metal foil composite plastic film is placed on the large-diameter peripheral wall portion of the cavity of a mold for in-mold blow molding having a columnar cavity formed with a small diameter at both ends and a large diameter at the middle portion. Along with, a synthetic resin that has been heated and melted is extruded into the mold to form a parison, and blow molding is performed to obtain a hollow molded body, and at the same time, the metal foil or metal foil composite film is formed on the outer peripheral surface of the molded body. Heat-bonding, and then cutting this molded body in half to form a concave-shaped surface material having a ring-shaped collar portion at the upper edge and having a metal foil or a metal foil composite film bonded to the outer surface. After the heat insulating material is filled in the concave portion of the face material, the back surface material is supplied by covering the surface material, and the outer peripheral edge portion of the back surface material is heat-bonded and sealed to the flange portion of the surface material under vacuum. A method for manufacturing a vacuum insulation panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04163637A JP3141535B2 (en) | 1992-05-29 | 1992-05-29 | Manufacturing method of vacuum insulation panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04163637A JP3141535B2 (en) | 1992-05-29 | 1992-05-29 | Manufacturing method of vacuum insulation panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05331924A true JPH05331924A (en) | 1993-12-14 |
| JP3141535B2 JP3141535B2 (en) | 2001-03-05 |
Family
ID=15777726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04163637A Expired - Fee Related JP3141535B2 (en) | 1992-05-29 | 1992-05-29 | Manufacturing method of vacuum insulation panel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3141535B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0616514U (en) * | 1992-06-11 | 1994-03-04 | 象印マホービン株式会社 | Vacuum insulation panel |
| WO2011016697A3 (en) * | 2009-08-07 | 2011-05-05 | Lg Electronics Inc. | Vacuum insulation member, registrator having vacuum insulation member, and method for fabricating vacuum insulation member |
| WO2011016696A3 (en) * | 2009-08-07 | 2011-05-05 | Lg Electronics Inc. | Vacuum insulation member, refrigerator having vacuum insulation member, and method for fabricating vacuum insulation member |
| KR101436804B1 (en) * | 2013-03-21 | 2014-09-02 | 한국건설기술연구원 | Vacuum Insulation Panel And Manufacturing Method Thereof |
-
1992
- 1992-05-29 JP JP04163637A patent/JP3141535B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0616514U (en) * | 1992-06-11 | 1994-03-04 | 象印マホービン株式会社 | Vacuum insulation panel |
| WO2011016697A3 (en) * | 2009-08-07 | 2011-05-05 | Lg Electronics Inc. | Vacuum insulation member, registrator having vacuum insulation member, and method for fabricating vacuum insulation member |
| WO2011016696A3 (en) * | 2009-08-07 | 2011-05-05 | Lg Electronics Inc. | Vacuum insulation member, refrigerator having vacuum insulation member, and method for fabricating vacuum insulation member |
| US8778477B2 (en) | 2009-08-07 | 2014-07-15 | Lg Electronics Inc. | Vacuum insulation member, refrigerator having vacuum insulation member, and method for fabricating vacuum insulation member |
| US8852708B2 (en) | 2009-08-07 | 2014-10-07 | Lg Electronics Inc. | Vacuum insulation member, refrigerator having vacuum insulation member, and method for fabricating vacuum insulation member |
| KR101436804B1 (en) * | 2013-03-21 | 2014-09-02 | 한국건설기술연구원 | Vacuum Insulation Panel And Manufacturing Method Thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3141535B2 (en) | 2001-03-05 |
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