JP5591149B2 - Method and apparatus for manufacturing vacuum insulation panel - Google Patents

Method and apparatus for manufacturing vacuum insulation panel Download PDF

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JP5591149B2
JP5591149B2 JP2011039157A JP2011039157A JP5591149B2 JP 5591149 B2 JP5591149 B2 JP 5591149B2 JP 2011039157 A JP2011039157 A JP 2011039157A JP 2011039157 A JP2011039157 A JP 2011039157A JP 5591149 B2 JP5591149 B2 JP 5591149B2
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mold
packaging material
outer periphery
vacuum
packaging
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JP2012177386A (en
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武文 仲子
努 東
博 朝田
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Nippon Steel Nisshin Co Ltd
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Description

本発明は、例えば冷蔵庫や保冷庫、或いは保温庫や住宅等の断熱壁等に好適に用いられる真空断熱パネルの製造方法及びその製造装置に関するものである。   TECHNICAL FIELD The present invention relates to a method for manufacturing a vacuum heat insulating panel and a manufacturing apparatus therefor, which are preferably used for, for example, a refrigerator, a cold storage, or a heat insulating wall of a heat storage or a house.

冷蔵庫や保冷庫、或いは保温庫等の断熱壁等に用いられる真空断熱パネルとしては、ガラス繊維やポリエステル繊維化等からなる断熱性に優れた芯材と、その周囲を覆うガス不透過性に優れた外包材からなり、前記芯材を内包する前記外包材の内部が真空状態となるように前記外包材周縁部で封止されたものが一般的である。
そして、外包材の内部を真空状態とした後に封止するために、芯材を内包した状態の外包材全体を真空チャンバーに挿入している。例えば特許文献１，２に見られる通りである。また、真空チャンバーを用いずに外包材の内部を真空状態にしようとする方法も提案されている。例えば特許文献３に示されている。
なお、封止の手段として、外包材の少なくとも一面に積層された樹脂層を介して熱融着する方法や、外包材として金属板を用いた場合に金属板同士を溶接接合する方法が採用されている。 As a vacuum insulation panel used for heat insulation walls such as refrigerators, cold storages, or heat insulation cabinets, it is excellent in heat insulation core material made of glass fiber or polyester fiber, etc., and excellent in gas impermeability covering its periphery In general, the outer packaging material is sealed at the periphery of the outer packaging material so that the inside of the outer packaging material containing the core material is in a vacuum state.
And in order to seal, after making the inside of an outer packaging material into a vacuum state, the whole outer packaging material in the state which included the core material is inserted in the vacuum chamber. For example, as seen in Patent Documents 1 and 2. In addition, a method has been proposed in which the inside of the outer packaging material is evacuated without using a vacuum chamber. For example, it is shown in Patent Document 3.
As a sealing means, a method of heat-sealing through a resin layer laminated on at least one surface of the outer packaging material, or a method of welding metal plates together when a metal plate is used as the outer packaging material is adopted. ing.

特開平８‐１５９３７６号公報JP-A-8-159376 特開２０１０‐１７４９７５号公報JP 2010-174975 A 特開２００９‐２２８８０３号公報JP 2009-228803 A

前記特許文献１では、上下の外包材によって被覆された芯材を真空チャンバー内へ挿入してその内部の真空状態とした後に、両外包材の突き合わせ部をシーム溶接によって封止することにより、真空断熱パネルを形成している。真空チャンバーでの真空引きを行っているため、装置が大がかりとなるばかりでなく、手間もかかる。
また、前記特許文献２では、袋状の外包材に開口部から芯材を挿入し、残りの一辺の開口部を閉まらないように固定して、恒温槽により乾燥したのち、真空包装後の残存ガスや経時的に放出される芯材からのアウトガス、外包材のシール層を通して侵入する透過ガスを吸着するためのガス吸着剤を外包材内に挿入した後に真空引きを行い、その後に、チャンバー内で外包材の開口部をヒートシールして、板状の真空断熱パネルを得ている。この方法も、前記特許文献１と同様に、真空チャンバーでの真空引きを行っているため、装置が大がかりとなっている。 In Patent Document 1, a core material covered with upper and lower outer packaging materials is inserted into a vacuum chamber to form a vacuum inside thereof, and then the butted portions of both outer packaging materials are sealed by seam welding, whereby a vacuum is obtained. Insulating panels are formed. Since evacuation is performed in the vacuum chamber, not only the apparatus becomes large, but also labor is required.
Moreover, in the said patent document 2, after inserting a core material into a bag-shaped outer packaging material from the opening part, fixing the opening part of the other side so that it may not be closed, and drying with a thermostat, it remains after vacuum packaging. After inserting a gas adsorbent for adsorbing gas or outgas from the core material released over time and permeating gas entering through the sealing layer of the outer packaging material into the outer packaging material, vacuuming is performed. Then, the opening of the outer packaging material is heat-sealed to obtain a plate-like vacuum heat insulation panel. In this method as well, as in the case of Patent Document 1, since the vacuuming is performed in the vacuum chamber, the apparatus is large.

そこで、真空チャンバーを用いずに、外包材の内部を真空状態にしようとする方法として特許文献３が挙げられる。
前記特許文献３では、予め溝が形成された略長方形の金属製外包材の３辺に沿って、溶接等によって第１の封止接合部を形成した後に開放されている１辺より芯材部を収納した後残りの１辺を封止する。最後に封止した１辺の接合部より内側に真空引きの孔を設けて収納部を減圧状態に維持し、その後に、金属製外包材の開放されている真空引きの孔を設けて辺に沿って真空引きの孔より内側に第２の封止接合部を形成して金属製真空断熱パネルを製造することが記載されている。 Then, patent document 3 is mentioned as a method of trying to make the inside of an outer packaging material into a vacuum state, without using a vacuum chamber.
In Patent Document 3, a core part is formed from one side opened after the first sealing joint is formed by welding or the like along the three sides of a substantially rectangular metal outer packaging material in which grooves are formed in advance. After the container is stored, the remaining one side is sealed. Lastly, a vacuuming hole is provided on the inner side of the sealed joint part on one side to maintain the storage part in a reduced pressure state, and then a vacuuming hole in which the metal outer packaging material is opened is provided on the side. It is described that a second vacuum-sealed panel is manufactured by forming a second sealing joint portion inside the hole for evacuation along.

しかしながら、当該特許文献３の製造方法においては、真空引き用の孔を設ける必要があり、材料が無駄であるばかりでなく、真空封止後に切除する必要がある。しかも、切除部分にも一旦封止のための溶接をする余分な手間がかかる。さらに、切除されるフランジが広いため真空引きのための溝を設けなければならないばかりか、この溝も溶接前に潰す必要があり、全体として手間がかかりすぎるといった問題点がある。   However, in the manufacturing method of Patent Document 3, it is necessary to provide a hole for evacuation, and not only the material is wasted but also it is necessary to excise after vacuum sealing. In addition, extra work is also required for welding for sealing once in the cut portion. Further, since the flange to be cut is wide, it is necessary not only to provide a groove for evacuation but also to squeeze the groove before welding, and there is a problem that it takes too much time as a whole.

本発明は、このような問題点を解消するために案出されたものであり、ガラス繊維やロックウール等の無機繊維や、合成繊維や天然繊維等の有機繊維等からなる断熱性に優れた芯材と、その周囲を覆うガス不透過性に優れた外包材からなり、前記芯材を内包する前記外包材の内部が真空状態とされて前記外包材周縁部で封止された真空断熱パネルを、大がかりな真空チャンバーを用いることなく簡便に製造する方法及びそのための装置を提供することを目的とする。   The present invention has been devised in order to solve such problems, and has excellent heat insulation properties composed of inorganic fibers such as glass fibers and rock wool, and organic fibers such as synthetic fibers and natural fibers. A vacuum heat insulating panel comprising a core material and an outer packaging material excellent in gas imperviousness covering the periphery thereof, and the inside of the outer packaging material enclosing the core material is in a vacuum state and sealed by the outer periphery of the outer packaging material It is an object of the present invention to provide a method for easily manufacturing a device without using a large vacuum chamber and an apparatus therefor.

本発明の真空断熱パネルの製造方法は、その目的を達成するため、少なくとも片方に芯材を収納する膨出部を有する上下２枚の板状包材と、当該包材の前記膨出部に収納する芯材を準備し、上下二つに分割された金型であって、その少なくとも一方の分割金型の中央に前記包材の膨出部が収まる開口部が設けられ、それら二つの分割金型の外周より内側に外周に沿って上下包材のフランジ部を挟み込むフランジ部押圧パッキンがそれぞれ配置されるとともに、前記フランジ部押圧パッキンと外周の間に外周に沿って上下の分割金型の間をシールする金型シールパッキンが配置され、前記フランジ部押圧パッキンと前記金型シールパッキンの間に、前記二つの分割金型の内の少なくとも一方の分割金型の相対する分割金型との当接面に開口する排気溝と当該排気溝と真空機器を結ぶ排気口が設けられた金型を用いて、分割金型の前記開口部に芯材を収納した前記膨出部が収まるように、上下２枚の包材のフランジ部を上下の分割金型でフランジ部押圧パッキンを介して挟み込むと共に、上下包材の外周部より外側において上下分割金型を金型シールパッキンによりシールすることで上下包材の外周部に閉じた空間を作り出し、排気溝を経由させて外部に通じる排気口から、上下包材に囲まれた空間の大気を排出して芯材収納部を真空にした後、分割金型内周面と包材の膨出部の外周に囲まれた領域において上下の包材フランジ部を接合して真空封止することを特徴とする。   In order to achieve the object of the method for manufacturing a vacuum heat insulating panel of the present invention, at least one of the upper and lower plate-shaped packaging materials having a bulging portion that houses a core material and the bulging portion of the packaging material. A core material to be stored is prepared and divided into two upper and lower molds, and an opening is provided in the center of at least one of the divided molds to accommodate the bulging portion of the packaging material. Flange portion pressing packings that sandwich the flange portions of the upper and lower packaging materials along the outer periphery are disposed inside the outer periphery of the mold, and between the flange portion pressing packing and the outer periphery, the upper and lower divided molds are disposed along the outer periphery. A mold seal packing that seals between the two molds is disposed between the flange portion pressing packing and the mold seal packing, and at least one of the two split molds is opposed to the split mold. Open to the contact surface Using a mold provided with an air groove and an exhaust port connecting the exhaust groove and the vacuum device, the upper and lower two wrappings are accommodated so that the bulging portion containing the core material is accommodated in the opening of the split mold. The upper and lower packaging materials are sandwiched between the upper and lower split molds via flange pressing gaskets, and the upper and lower split molds are sealed with the mold seal packing outside the upper and lower packaging materials. A closed space is created, and the air in the space surrounded by the upper and lower packaging materials is exhausted from the exhaust port that leads to the outside via the exhaust groove, and the core material storage part is evacuated. In the region surrounded by the outer periphery of the bulging portion of the packaging material, the upper and lower packaging material flange portions are joined and vacuum sealed.

上下２枚の板状包材として、厚さ0.05mm〜0.3mm程度のステンレス鋼、アルミニウム等の金属薄板や金属箔を用い、レーザ溶接、シーム溶接、TIG溶接、プラズマ溶接、電子ビーム溶接等の溶接法や拡散接合等の接合手段により上下の包材フランジ部を接合してもよい。
また、上下２枚の板状包材として、少なくとも互いの当接面側にポリプロピレン等の熱可塑性樹脂を積層したラミネート材を用い、熱融着法により上下の包材フランジ部を接合してもよい。
効率的な真空引きの観点から、２枚の包材の接触面積（接触幅×周長）は狭いほど好ましく、合わせ面の表面粗度は溶接等による接合が可能な範囲で粗い方が好ましい。 As the upper and lower plate-shaped packaging materials, a thin metal plate or metal foil such as stainless steel or aluminum having a thickness of about 0.05 mm to 0.3 mm is used. Laser welding, seam welding, TIG welding, plasma welding, electron beam welding, etc. The upper and lower packaging flange portions may be joined by a joining method such as a welding method or diffusion joining.
Further, as the two upper and lower plate-shaped packaging materials, a laminate material in which a thermoplastic resin such as polypropylene is laminated at least on the contact surface side of each other, and the upper and lower packaging material flange portions may be joined by a thermal fusion method. Good.
From the viewpoint of efficient evacuation, the contact area (contact width × circumferential length) of the two packaging materials is preferably as narrow as possible, and the surface roughness of the mating surfaces is preferably as rough as possible in a range that can be joined by welding or the like.

本発明の真空断熱パネルの製造装置は、上下二つに分割された金型であって、その少なくとも一方の分割金型の中央に前記包材の膨出部が収まる開口部が設けられ、前記二つの分割金型の外周より内側に外周に沿って上下包材のフランジ部を挟み込むフランジ部押圧パッキンがそれぞれ配置されるとともに、前記フランジ部押圧パッキンと外周の間に外周に沿って上下の分割金型の間をシールする金型シールパッキンが配置され、前記フランジ部押圧パッキンと前記金型シールパッキンの間に、前記二つの分割金型の内の少なくとも一方の分割金型の相対する分割金型との当接面に開口する排気溝と当該排気溝と真空機器を結ぶ排気口が設けられた金型を備えていることを特徴とする。   The vacuum heat insulating panel manufacturing apparatus of the present invention is a mold that is divided into upper and lower parts, and an opening is provided in the center of at least one of the divided molds to accommodate the bulging part of the packaging material. A flange portion pressing packing for sandwiching the flange portion of the upper and lower packaging materials is disposed along the outer periphery inside the outer periphery of the two split molds, and the upper and lower portions are divided along the outer periphery between the flange portion pressing packing and the outer periphery. A mold seal packing that seals between the molds is disposed, and a split mold facing at least one split mold of the two split molds is disposed between the flange portion pressing packing and the mold seal packing. It is characterized by comprising a mold provided with an exhaust groove that opens on a contact surface with the mold and an exhaust port that connects the exhaust groove and vacuum equipment.

本発明では、大気中で真空封止を行っている。このため、大型の真空チャンバーは不要であり、設備が簡素であるばかりでなく、効率良く真空断熱パネルを製造することが可能となる。また、包材の外周全体の広い範囲から真空引きする形態となるため、作業が短時間で完了する。
さらに、用いる上下の分割金型を、上下包材の耐熱性繊維製芯材収納膨出部が収まるような開口部を設け、上下包材のフランジ部のみを抑えるような構造としているため、最終製品とほぼ同寸法の包材を使用でき、材料の歩留りが向上する。
さらにまた、上下包材に、真空引きのための口金等の取り付け必要がないので、この点からも材料の歩留りが向上するばかりでなく、作業効率も良くなる。 In the present invention, vacuum sealing is performed in the atmosphere. For this reason, a large-sized vacuum chamber is unnecessary, and not only the equipment is simple, but also a vacuum heat insulation panel can be manufactured efficiently. Moreover, since it becomes a form which evacuates from the wide range of the whole outer periphery of a packaging material, work is completed in a short time.
In addition, the upper and lower split molds used are provided with an opening for accommodating the heat-resistant fiber core material storage bulges of the upper and lower packaging materials, and the structure is such that only the flange portions of the upper and lower packaging materials are suppressed. The packaging material is almost the same size as the product, which improves the material yield.
Furthermore, since there is no need to attach a base for vacuuming to the upper and lower packaging materials, not only the yield of the material is improved but also the working efficiency is improved.

本発明の真空断熱パネルの製造手順を説明する分解図Exploded view explaining the manufacturing procedure of the vacuum insulation panel of the present invention 本発明の真空断熱パネルの製造装置を説明する断面図Sectional drawing explaining the manufacturing apparatus of the vacuum heat insulation panel of this invention 本発明の真空断熱パネルの製造装置を説明する部分断面図Partial sectional drawing explaining the manufacturing apparatus of the vacuum heat insulation panel of this invention

１ａ：上側包材 １ａ：下側包材
２ａ：上金型 ２ｂ：下金型
２ｃ：上側包材フランジ部 ２ｄ：下側包材フランジ部
２ｅ：芯材収納膨出部
３ａ：上包材用フランジ部押圧パッキン ３ｂ：下包材用フランジ部押圧パッキン
４：金型シールパッキン
５ａ：排気溝 ５ｂ：排気口 1a: Upper packaging material 1a: Lower packaging material
2a: Upper mold 2b: Lower mold
2c: Upper packaging material flange 2d: Lower packaging material flange
2e: Core material storage bulge
3a: Flange part pressing packing for upper packaging material 3b: Flange part pressing packing for lower packaging material
4: Mold seal packing
5a: Exhaust groove 5b: Exhaust port

前記した通り、上下の外包材によって被覆された芯材を真空チャンバー内へ挿入して、その内部の真空状態とした後に、両外包材の突き合わせ部をシーム溶接によって封止して製造しようとすると、真空チャンバーでの真空引きを行う必要があるため、装置が大がかりとなるばかりでなく、手間もかかって、結果的に高コストなってしまう。
そこで、本発明者らは、真空チャンバーを用いることなく、外包材の突き合わせ部から簡便に真空引きした後に封止シールすることが可能な方法について鋭意検討し、本発明に到達した。
以下に、その詳細を説明する。 As described above, after the core material covered with the upper and lower outer packaging materials is inserted into the vacuum chamber and the inside of the vacuum chamber is made into a vacuum state, the butt portion of both outer packaging materials is sealed and manufactured by seam welding. Since it is necessary to perform evacuation in a vacuum chamber, not only the apparatus becomes large, but also labor is required, resulting in high costs.
Therefore, the present inventors have earnestly studied a method capable of sealing and sealing after simply evacuating from the butt portion of the outer packaging material without using a vacuum chamber, and have reached the present invention.
The details will be described below.

まず、図に基づいて、本発明方法において用いる装置の構造から説明する。
図１〜３は本発明製造装置の概略構造と操作手順を説明する図である。本発明の真空断熱パネルの製造装置は、基本的には上下二つに分割された金型から構成されている。
上金型２ａ、下金型２ｂは、製造しようとする真空断熱パネルの外形に排気用溝と金型シールパッキンとそれらの間或いは周辺のスペース等を加えた、真空断熱パネルの外形よりも大きい外形を有している。図に示す例は、矩形の真空断熱パネルを製造するための金型であり、外形は矩形とされている。そして、分割金型の中央に、真空断熱パネルを構成する芯材を収納する包材の膨出部が収まるような開口部が設けられている。この開口部は、上金型２ａ、下金型２ｂの両方に設けられていてもよいし、上下二枚の包材の内の一方にのみ膨出部が設けられたような真空断熱パネルを製造する場合には、片方の分割金型にのみ設けられていてもよい。 First, the structure of an apparatus used in the method of the present invention will be described with reference to the drawings.
1-3 is a figure explaining the schematic structure and operation procedure of this invention manufacturing apparatus. The apparatus for manufacturing a vacuum heat insulating panel of the present invention is basically composed of a mold that is divided into upper and lower parts.
The upper mold 2a and the lower mold 2b are larger than the outer shape of the vacuum heat insulating panel, which is obtained by adding an exhaust groove, a mold seal packing, and a space between or around them to the outer shape of the vacuum heat insulating panel to be manufactured. It has an outer shape. The example shown in the figure is a mold for manufacturing a rectangular vacuum heat insulating panel, and the outer shape is rectangular. And the opening part which the swelling part of the packaging material which accommodates the core material which comprises a vacuum heat insulation panel is settled in the center of a division mold is provided. This opening may be provided in both the upper mold 2a and the lower mold 2b, or a vacuum thermal insulation panel in which a bulge is provided only in one of the upper and lower two packaging materials. When manufacturing, it may be provided only in one split mold.

二つの分割金型２ａ、２ｂの相接する当接面には、金型外周より内側に外周に沿って上下包材１ａ，１ｂのフランジ部２ｃ、２ｄを挟み込むフランジ部押圧パッキン３ａ、３ｂがそれぞれ配置されている。なお、図中では、フランジ部押圧パッキン３ａ、３ｂとしてＯリングを用いている。
また、二つの分割金型２ａ、２ｂの相接する当接面には、前記フランジ部押圧パッキン３ａ、３ｂと分割金型の外周の間に分割金型の外周に沿って上下の分割金型の間をシールする金型シールパッキン４が配置されている。なお、図中では、金型シールパッキン４として、下金型２ｂの上金型２ａに相対する面に凹溝を設け、この凹溝にＯリングを配している。
さらに、前記フランジ部押圧パッキン３ａ、３ｂと前記金型シールパッキン４の間に、前記二つの分割金型２ａ、２ｂの内の一方の分割金型の相対する分割金型の当接面に開口する排気溝５ａと当該排気溝５ａと真空機器を結ぶ排気口５ｂが設けられている。なお、図中では、排気溝５ａ、排気口５ｂは下金型２ｂに設けられているが、上金型２ａに設けてもよいし、上金型２ａと下金型２ｂの両方に設けてもよい。 Flange portion pressing packings 3a and 3b sandwiching the flange portions 2c and 2d of the upper and lower wrapping materials 1a and 1b along the outer periphery inside the outer periphery of the mold are provided on the abutting contact surfaces of the two divided molds 2a and 2b. Each is arranged. In the drawing, O-rings are used as the flange portion pressing packings 3a and 3b.
Further, on the abutting contact surface of the two split molds 2a and 2b, the upper and lower split molds are arranged along the outer periphery of the split mold between the flange portion pressing packings 3a and 3b and the outer periphery of the split mold. A mold seal packing 4 is disposed for sealing between the two. In the figure, a concave groove is provided on the surface of the lower mold 2b facing the upper mold 2a as the mold seal packing 4, and an O-ring is disposed in the concave groove.
Furthermore, an opening is made between the flange part pressing packings 3a and 3b and the mold seal packing 4 on the contact surface of the split mold facing one of the two split molds 2a and 2b. And an exhaust port 5b that connects the exhaust groove 5a and the vacuum device. In the figure, the exhaust groove 5a and the exhaust port 5b are provided in the lower mold 2b, but may be provided in the upper mold 2a or provided in both the upper mold 2a and the lower mold 2b. Also good.

次に、上記製造装置を用いて真空断熱パネルを製造する手順について説明する。
別途、少なくとも片方に芯材を収納する膨出部２eを有する上下２枚の板状包材１ａ、１ｂと、この包材の前記膨出部２eに収納する断熱性繊維製の芯材を準備する。
膨出部２eに芯材を収納し、フランジ部２ｃ、２ｄで重ねられた上下２枚の板状包材１ａ、１ｂを、そのフランジ部２ｃ、２ｄがフランジ部押圧パッキン３ａ、３ｂで押されるように、二つの分割金型２ａ、２ｂ間に挟み込む。なお、この時点では、芯材を収納した包材の膨出部２eは、分割金型２ａ、２ｂの開口部に納まった状態となっている。 Next, a procedure for manufacturing a vacuum heat insulation panel using the above manufacturing apparatus will be described.
Separately, two upper and lower plate-shaped packaging materials 1a and 1b each having a bulging portion 2e for accommodating a core material at least on one side, and a core material made of heat insulating fiber to be accommodated in the bulging portion 2e of the packaging material are prepared. To do.
The core material is housed in the bulging portion 2e, and the upper and lower two plate-like packaging materials 1a and 1b overlapped by the flange portions 2c and 2d are pressed by the flange portion pressing packings 3a and 3b. In this way, it is sandwiched between the two divided molds 2a, 2b. At this time, the bulging portion 2e of the packaging material containing the core material is in a state of being accommodated in the openings of the divided molds 2a and 2b.

その後、図示していない真空ポンプを作動させ、排気溝５ａ、排気口５ｂを経由させて芯材収納空間から大気を吸引する。その後、芯材収納空間を真空に維持した状態で、図２，３に示すように、分割金型の内側と膨出部２eとの間の任意位置で、上下２枚の板状包材１ａ、１ｂのフランジ部２ｃ、２ｄをレーザ溶接する。
上下２枚の板状包材１ａ、１ｂのフランジ部２ｃ、２ｄの間には僅かな隙間があるために大気は十分に吸引され、芯材収納空間は真空状態となるが、より真空状態にし易くするためには、フランジ部合わせ面の表面を粗く仕上げていることが好ましい。
また、図示していないが、上下２枚の板状包材１ａ、１ｂの何れかのフランジ部２ｃ、２ｄに、レーザ溶接による溶接封止部より外側に平坦部を挟んで外周に通じる浅い溝を設けて、真空引きを行い易くしてもよい。 Thereafter, a vacuum pump (not shown) is operated, and the atmosphere is sucked from the core material storage space via the exhaust groove 5a and the exhaust port 5b. Thereafter, in a state where the core material storage space is maintained in vacuum, as shown in FIGS. 2 and 3, two upper and lower plate-shaped packaging materials 1a are arranged at arbitrary positions between the inner side of the split mold and the bulging portion 2e. The flange portions 2c and 2d of 1b are laser welded.
Since there is a slight gap between the flange portions 2c and 2d of the upper and lower two plate-like packaging materials 1a and 1b, the atmosphere is sufficiently sucked and the core material storage space is in a vacuum state. In order to facilitate, it is preferable that the surface of the flange portion mating surface is roughened.
Moreover, although not shown in figure, it is a shallow groove | channel which leads to an outer periphery on both sides of the flange part 2c, 2d of the upper and lower plate-shaped packaging materials 1a, 1b on both sides of the flat part outside the welding sealing part by laser welding. May be provided to facilitate evacuation.

ところで、上記の事例では、上下２枚の板状包材１ａ、１ｂとして金属板を用いているのでレーザ溶接したが、レーザ溶接の他に、シーム溶接、ＴＩＧ溶接、プラズマ溶接、電子ビーム溶接、拡散接合等であってもよい。
上下２枚の板状包材として用いられる金属板としては、厚さ0.05mm〜0.3mm程度のステンレス鋼、アルミニウム等の金属薄板や金属箔が好ましいが、めっき鋼板等であってもよい。
また、上下２枚の板状包材として、少なくとも互いの当接面側にポリプロピレン等の熱可塑性樹脂を積層したラミネート材を用い、熱融着法により上下の包材フランジ部を接合してもよい。
板状包材の材質、板厚或いは包材フランジ部の封止方法については、本発明で提供される真空断熱パネルの用途に応じて選択をすればよい。 By the way, in the above example, since metal plates are used as the upper and lower two plate-like packaging materials 1a and 1b, laser welding was performed. In addition to laser welding, seam welding, TIG welding, plasma welding, electron beam welding, Diffusion bonding or the like may be used.
The metal plate used as the upper and lower plate-shaped packaging materials is preferably a thin metal plate or metal foil such as stainless steel or aluminum having a thickness of about 0.05 mm to 0.3 mm, but may be a plated steel plate or the like.
Further, as the two upper and lower plate-shaped packaging materials, a laminate material in which a thermoplastic resin such as polypropylene is laminated at least on the contact surface side of each other, and the upper and lower packaging material flange portions may be joined by a thermal fusion method. Good.
What is necessary is just to select according to the use of the vacuum heat insulation panel provided by this invention about the sealing material of the material, plate | board thickness, or packaging material flange part of a plate-shaped packaging material.

Claims (4)

少なくとも片方に芯材を収納する膨出部を有する上下２枚の板状包材と、当該包材の前記膨出部に収納する芯材を準備し、上下二つに分割された金型であって、その少なくとも一方の分割金型の中央に前記包材の膨出部が収まる開口部が設けられ、それら二つの分割金型の外周より内側に外周に沿って上下包材のフランジ部を挟み込むフランジ部押圧パッキンがそれぞれ配置されるとともに、前記フランジ部押圧パッキンと外周の間に外周に沿って上下の分割金型の間をシールする金型シールパッキンが配置され、前記フランジ部押圧パッキンと前記金型シールパッキンの間に、前記二つの分割金型の内の少なくとも一方の分割金型の相対する分割金型との当接面に開口する排気溝と当該排気溝と真空機器を結ぶ排気口が設けられた金型を用いて、分割金型の前記開口部に芯材を収納した前記膨出部が収まるように、上下２枚の包材のフランジ部を上下の分割金型でフランジ部押圧パッキンを介して挟み込むと共に、上下包材の外周部より外側において上下分割金型を金型シールパッキンによりシールすることで上下包材の外周部に閉じた空間を作り出し、排気溝を経由させて外部に通じる排気口から、上下包材に囲まれた空間の大気を排出して芯材収納部を真空にした後、分割金型内周面と包材の膨出部の外周に囲まれた領域において上下の包材フランジ部を接合して真空封止することを特徴とする真空断熱パネルの製造方法。   At least one plate-like packaging material having a bulging part for accommodating a core material on at least one side and a core material to be accommodated in the bulging part of the packaging material are prepared. An opening for accommodating the bulging portion of the packaging material is provided at the center of at least one of the divided molds, and the flange portions of the upper and lower packaging materials are provided along the outer periphery inside the outer periphery of the two divided molds. Between the flange part pressing packing and the outer periphery, a mold seal packing that seals between the upper and lower divided molds is arranged between the flange part pressing packing and the outer periphery, and the flange part pressing packing and Between the mold seal packing, an exhaust groove that opens on the contact surface of the at least one of the two divided molds with the opposed divided mold, and an exhaust that connects the exhaust groove and the vacuum device Use a mold with a mouth And sandwiching the flanges of the upper and lower two packaging materials with the upper and lower split molds through the flange part pressing packing so that the bulging part containing the core material is accommodated in the opening of the split mold, By sealing the upper and lower split molds with the mold seal packing outside the outer periphery of the upper and lower packaging materials, a closed space is created in the outer peripheral portion of the upper and lower packaging materials, and the upper and lower packaging from the exhaust port leading to the outside via the exhaust groove After exhausting the air in the space surrounded by the packaging material to evacuate the core material storage part, the upper and lower packaging material flanges in the area surrounded by the inner periphery of the split mold and the bulging part of the packaging material A vacuum heat insulation panel manufacturing method, characterized by joining and vacuum-sealing. 上下２枚の板状包材として金属薄板又は金属箔を用い、溶接法により上下の包材フランジ部を接合する請求項１に記載の真空断熱パネルの製造方法。   The manufacturing method of the vacuum heat insulation panel of Claim 1 which joins the upper and lower packaging-material flange parts by a welding method, using a thin metal plate or metal foil as two upper and lower plate-shaped packaging materials. 上下２枚の板状包材として、互いの当接面の少なくとも片方に熱可塑性樹脂を積層したラミネート材を用い、熱融着法により上下の包材フランジ部を接合する請求項１に記載の真空断熱パネルの製造方法。   The upper and lower packaging material flange portions are joined by a thermal fusion method using a laminate material in which a thermoplastic resin is laminated on at least one of the contact surfaces of the upper and lower plate-shaped packaging materials. Manufacturing method of vacuum insulation panel. 上下二つに分割された金型であって、その少なくとも一方の分割金型の中央に前記包材の膨出部が収まる開口部が設けられ、前記二つの分割金型の外周より内側に外周に沿って上下包材のフランジ部を挟み込むフランジ部押圧パッキンがそれぞれ配置されるとともに、前記フランジ部押圧パッキンと外周の間に外周に沿って上下の分割金型の間をシールする金型シールパッキンが配置され、前記フランジ部押圧パッキンと前記金型シールパッキンの間に、前記二つの分割金型の内の少なくとも一方の分割金型の相対する分割金型との当接面に開口する排気溝と当該排気溝と真空機器を結ぶ排気口が設けられた金型を備えていることを特徴とする真空断熱パネルの製造装置。   A mold divided into two upper and lower parts, and an opening is provided in the center of at least one of the divided molds to accommodate the bulging portion of the packaging material. A mold seal packing is disposed between the upper and lower divided molds along the outer periphery between the flange part pressing packing and the outer periphery. Is disposed between the flange pressing gasket and the mold seal packing, and the exhaust groove opens at the contact surface of the at least one of the two divided molds with the opposed divided mold. And a vacuum heat insulating panel manufacturing apparatus comprising a mold provided with an exhaust port connecting the exhaust groove and the vacuum device.
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