JP2015010661A - Vacuum thermal insulation material - Google Patents

Vacuum thermal insulation material Download PDF

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JP2015010661A
JP2015010661A JP2013136728A JP2013136728A JP2015010661A JP 2015010661 A JP2015010661 A JP 2015010661A JP 2013136728 A JP2013136728 A JP 2013136728A JP 2013136728 A JP2013136728 A JP 2013136728A JP 2015010661 A JP2015010661 A JP 2015010661A
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core material
ear
main body
sheet
heat insulating
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JP6171626B2 (en
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俊徳 森
Toshinori Mori
俊徳 森
直行 竹田
Naoyuki Takeda
直行 竹田
馨 毛利
Kaoru Mori
馨 毛利
季朗 嶋津
Sueo Shimazu
季朗 嶋津
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Lixil Corp
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Lixil Corp
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    • 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

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum thermal insulation material in which a vacuum break is surely prevented.SOLUTION: A thermal insulation material 5 includes a core material 3 covered by outer cover sheets 6, 7. The core material 3 includes a plate-like body part 3b and a lug part 3a projecting from the body part 3b. Circumferential edge portions of the outer cover sheets 6, 7 are sealed. The lug part 3a is folded so that it overlaps the body part 3b and both ends of the lug part 3a in the longitudinal direction have roundness. The lug part 3a is folded back toward a bottom side of a core material receiving part 6a.

Description

本発明は、建物などの断熱に用いられる真空断熱材に係り、特にコア材（芯材）を外皮シートで気密に被包し、内部を真空に減圧したパネル状の真空断熱材に関する。   The present invention relates to a vacuum heat insulating material used for heat insulation of a building or the like, and more particularly to a panel-shaped vacuum heat insulating material in which a core material (core material) is hermetically encapsulated with an outer sheet and the inside is decompressed to a vacuum.

建物などの断熱材として用いられるパネル状の真空断熱材は、コア材（芯材）を外皮シートで気密に被包し、内部を真空に減圧したものである（特許文献１、２）。   A panel-like vacuum heat insulating material used as a heat insulating material for a building or the like is a material in which a core material (core material) is hermetically encapsulated with an outer sheet, and the inside is decompressed to a vacuum (Patent Documents 1 and 2).

特許文献１では、無機質発泡粉末を紙また布等の通気性の中袋に充填し、該中袋の開口部端面をテープ又は接着剤等で封止してコア材とし、このコア材をプレス等により型決めした後に乾燥を施し、その後非通気性の外袋に挿入した後、この内部を減圧すると共に外袋の開口部端面をシールして真空断熱材を構成している。特許文献１の第１図には、外袋の開口部端面をシールするときに、コア材の封止部が外袋の該開口部端面に挟み込まれないようにするために、封止部（耳部）を折り返すことが示されている。   In Patent Document 1, an inorganic foamed powder is filled into a breathable inner bag such as paper or cloth, and the opening end face of the inner bag is sealed with tape or an adhesive to form a core material, and this core material is pressed. After being molded by such means, drying is performed, and after that, after inserting into a non-breathable outer bag, the inside is decompressed and the opening end face of the outer bag is sealed to constitute a vacuum heat insulating material. In FIG. 1 of Patent Document 1, when sealing the opening end surface of the outer bag, the sealing portion (in order to prevent the sealing portion of the core material from being sandwiched between the opening end surfaces of the outer bag) It is shown that the ears are folded back.

特許文献２には、２枚のアルミラミネートフィルムの一方にコア材収容用凹部を設けておき、このコア材収容用凹部にコア材を収容した後、他方の平坦なアルミラミネートフィルムで覆い、減圧雰囲気下で、凹部周囲においてアルミラミネートフィルム同士を接着させて封止し、真空断熱材を製造することが記載されている。   In Patent Document 2, a recess for accommodating a core material is provided in one of two aluminum laminate films, the core material is accommodated in the recess for accommodating a core material, and then covered with the other flat aluminum laminate film. It describes that an aluminum laminate film is adhered and sealed around a recess to produce a vacuum heat insulating material under an atmosphere.

特公平２−３３９１８JP-B-2-33918 特開２０１１−１６３４１５JP2011-163415A

特許文献１のように、コア材の封止部（耳部）を折り返した場合、折り返し縁の両端側に角ばった突角部が生じる。この突角部がアルミラミネートフィルムなどの外袋を突き破ると、真空断熱材の真空がブレークする。第１発明は、このような真空ブレークが確実に防止される真空断熱材を提供することを目的とする。   When the sealing part (ear part) of the core material is folded back as in Patent Document 1, projecting corners are formed at both ends of the folded edge. When this protrusion breaks through an outer bag such as an aluminum laminate film, the vacuum of the vacuum heat insulating material breaks. An object of the first invention is to provide a vacuum heat insulating material in which such a vacuum break is reliably prevented.

また、特許文献１のように耳部を折り返したコア材をアルミラミネートフィルムのコア材収容用凹部に収容する場合、耳部がコア材の上面側に折り返されていると、コア材から手を離したときに耳部が原形状に復元するように開き出し、アルミラミネートフィルム同士の間に挟み込まれ易い。第２発明は、このような耳部の復元が防止され、製造が容易となる真空断熱材を提供することを目的とする。   Further, when the core material with the ears folded back as in Patent Document 1 is housed in the core material housing recess of the aluminum laminate film, if the ears are folded back to the upper surface side of the core material, When released, the ears open so as to restore to the original shape, and are easily sandwiched between aluminum laminate films. The second invention has an object to provide a vacuum heat insulating material that prevents such ears from being restored and is easy to manufacture.

第１発明の真空断熱材は、コア材を外皮シートで被包した真空断熱材であって、該コア材は、盤状の本体部と、該本体部から張り出す耳部とを有し、該耳部が該本体部に重なるように折り返されており、該外皮シートの周縁部が封着されている真空断熱材において、該コア材のコーナー部が、非突角状となるように折り畳まれていることを特徴とする。   The vacuum heat insulating material of the first invention is a vacuum heat insulating material in which a core material is encapsulated with a skin sheet, and the core material has a disk-shaped main body portion and an ear portion protruding from the main body portion, In the vacuum heat insulating material in which the ear portion is folded so as to overlap the main body portion and the peripheral edge portion of the outer skin sheet is sealed, the corner portion of the core material is folded so as to have a non-projection angle shape. It is characterized by being.

第１発明の一態様では、前記耳部の長手方向両端側の少なくとも一部が、耳部と前記本体部との間に折り込まれている。   In one aspect of the first aspect of the present invention, at least a part of both ends of the ear portion in the longitudinal direction is folded between the ear portion and the main body portion.

第１発明の別の一態様では、前記耳部が前記本体部に重なるように折り返された後、耳部の長手方向両端側の少なくとも一部が、該コア材の側辺に対し斜交する折り返し線に沿って折り返されている。   In another aspect of the first invention, after the ear portion is folded back so as to overlap the main body portion, at least a part of both ends in the longitudinal direction of the ear portion obliquely intersect the side of the core material. Wrapped along the wrapping line.

第１発明では、前記外皮シートとして、コア材の前記本体部を収容したコア材収容部と、該コア材収容部から張り出すフランジ部とを有した第１の外皮シートと、該第１の外皮シートに被さる第２の外皮シートとを備えており、前記コア材の耳部は、該コア材収容部の底面側に折り返されていることが好ましい。   In the first invention, as the outer skin sheet, a first outer skin sheet having a core material accommodating portion accommodating the main body portion of the core material, and a flange portion projecting from the core material accommodating portion, And a second skin sheet covering the skin sheet, and the ear portion of the core material is preferably folded back to the bottom surface side of the core material housing portion.

第２発明の真空断熱材は、コア材を外皮シートで被包した真空断熱材であって、該コア材は、盤状の本体部と、該本体部から張り出す耳部とを有し、該耳部が該本体部に重なるように折り返されており、該外皮シートの周縁部が封着されている真空断熱材において、前記外皮シートとして、コア材の前記本体部を収容したコア材収容部と、該コア材収容部から張り出すフランジ部とを有した第１の外皮シートと、該第１の外皮シートに被さる第２の外皮シートとからなり、前記コア材の耳部は、該コア材収容部の底面側に折り返されていることを特徴とする。   The vacuum heat insulating material of the second invention is a vacuum heat insulating material in which a core material is encapsulated with a skin sheet, and the core material has a disk-shaped main body part and an ear part protruding from the main body part, In the vacuum heat insulating material in which the ear portion is folded back so as to overlap the main body portion, and the peripheral portion of the outer skin sheet is sealed, the core material containing the main body portion of the core material as the outer skin sheet And a second skin sheet covering the first skin sheet, and the ear portion of the core material comprises: a first skin sheet having a flange portion projecting from the core material housing portion; and a second skin sheet covering the first skin sheet. It is folded back to the bottom surface side of the core material accommodating portion.

本発明の一態様では、前記コア材は、シート状素材よりなる中袋と、該中袋内に充填された充填物とを備えており、前記耳部において、該シート状素材が重ね合わされ、この重なり合ったシート状素材同士が接合手段により接合されており、該接合手段によるシート状素材同士の接合部分は、該耳部の前記本体部からの張出方向の先端側から該本体部側に離隔して設けられている。   In one aspect of the present invention, the core material includes an inner bag made of a sheet-like material, and a filler filled in the inner bag, and the sheet-like material is overlaid at the ear portion, The overlapping sheet-like materials are joined together by the joining means, and the joining portion of the sheet-like materials by the joining means is from the front end side of the ear portion in the protruding direction from the body portion to the body portion side. They are spaced apart.

本発明では、前記耳部のうち、少なくとも前記本体部からの張出方向の途中部から先端側の部分は、該先端側ほど該耳部の長手方向の両端部が該長手方向の中間側に接近した形状となっていてもよい。   In the present invention, at least a portion of the ear portion on the distal end side from the middle portion in the projecting direction from the main body portion is such that both end portions in the longitudinal direction of the ear portion are closer to the intermediate side in the longitudinal direction toward the distal end side. It may be a close shape.

第１発明の真空断熱材にあっては、耳部を折り畳んだコア材のコーナー部がいずれも非突角状となっており、コア材に角ばった角部は存在せず、この角部によって外皮シートが突き破られることはない。このため、真空断熱材５の真空がブレークすることが防止される。   In the vacuum heat insulating material of the first invention, the corner portions of the core material obtained by folding the ear portion are all non-projecting, and there are no corner portions that are angular to the core material. The skin sheet is not pierced. For this reason, the vacuum of the vacuum heat insulating material 5 is prevented from breaking.

なお、本発明において、非突角状となるように折り畳まれるコア材のコーナー部とは、耳部を本体部側へ折り返してなる折り返し縁の長手方向の両端側の部分をいう。本発明において、コーナー部を非突角状となるように折り畳むとは、耳部の長手方向の両端側の縁部がコア材の本体部の外面に折り重なった状態、又は、耳部の長手方向の両端側の縁部の少なくとも一部が他の部分によって隠蔽された状態となるようにコーナー部を折り畳むことをいう。このように折り畳むことにより、耳部の長手方向の両端側が実質的にコア材の本体部の外方へ突出しないものとなるため、この耳部の両端側が外皮シートに接触することにより該外皮シートが破れることをより確実に防止することができる。   In addition, in this invention, the corner part of the core material folded so that it may become a non-angular shape means the part of the both ends side of the longitudinal direction of the folding | turning edge formed by folding an ear | edge part to the main-body part side. In the present invention, folding the corner portion so as to have a non-angular shape means that the edges on both ends in the longitudinal direction of the ear portion are folded over the outer surface of the main body portion of the core material, or the longitudinal direction of the ear portion The corner portion is folded so that at least a part of the edge portions on both end sides is concealed by other portions. By folding in this way, both end sides in the longitudinal direction of the ear portion do not substantially protrude outward from the main body portion of the core material, so that both end sides of the ear portion come into contact with the outer skin sheet, thereby the outer skin sheet. Can be prevented more reliably.

本発明において、外皮シートの周縁部とは、外皮シートのうち、コア材の本体部及びこの本体部に重なった耳部を被包した部分よりも該本体部の外方に配置された部分をいう。具体的には、後述の図５，６，１１の各実施の形態においては、外皮シート６のフランジ部６ｆ及び外皮シート７のうち該フランジ部６ｆに重なった部分が外皮シートの周縁部に相当する。図１２の実施の形態においては、外皮シート６’，７のうち、真空断熱材５’の外周に近接したコア材３からさらに該真空断熱材５’の外周側へ張り出した部分、及び、隣り合うコア材３，３同士の間に配置された部分が外皮シートの周縁部に相当する。外皮シートの周縁部の外周側とは、この外皮シートの周縁部のうち、コア材の本体部から離隔した領域をいう。なお、図１２の実施の形態のように共通の外皮シート６’上に複数個のコア材３が配列された場合には、便宜上、外皮シート６’，７のうち、隣り合うコア材３，３同士の間に配置された部分の中間付近も、外皮シートの周縁部の外周側と同様に扱うことができるものとする。   In the present invention, the peripheral portion of the outer skin sheet refers to a portion of the outer skin sheet that is disposed on the outer side of the main body portion rather than a portion covering the main body portion of the core material and the ear portion overlapping the main body portion. Say. Specifically, in each of the embodiments shown in FIGS. 5, 6, and 11 to be described later, a portion of the outer skin sheet 6 that overlaps the flange portion 6f of the flange portion 6f and the outer skin sheet 7 corresponds to a peripheral edge portion of the outer skin sheet. To do. In the embodiment of FIG. 12, portions of the skin sheets 6 ′ and 7 that protrude from the core material 3 close to the outer periphery of the vacuum heat insulating material 5 ′ to the outer peripheral side of the vacuum heat insulating material 5 ′, and adjacent to each other. The part arrange | positioned between the core materials 3 and 3 to correspond corresponds to the peripheral part of an outer skin sheet. The outer peripheral side of the peripheral portion of the outer skin sheet refers to a region separated from the main body portion of the core material in the peripheral portion of the outer skin sheet. In the case where a plurality of core materials 3 are arranged on a common skin sheet 6 ′ as in the embodiment of FIG. 12, for convenience, the adjacent core materials 3, 3 of the skin sheets 6 ′ and 7 are arranged. It is assumed that the vicinity of the middle of the portion arranged between the three members can be handled in the same manner as the outer peripheral side of the peripheral edge portion of the skin sheet.

コア材の耳部の長手方向とは、この耳部が連なる本体部の外面に沿う該耳部の延在方向（あるいは、耳部の本体部からの張出方向及び厚み方向の双方と直交する方向）をいう。   The longitudinal direction of the ear part of the core material is orthogonal to both the extending direction of the ear part along the outer surface of the main body part to which the ear part continues (or both the protruding direction from the main body part of the ear part and the thickness direction). Direction).

第２発明の真空断熱材では、耳部をコア材収容部の底面側に折り返すので、耳部がコア材本体部で押えつけられる。そのため、コア材から手を離しても耳部が復元して広がることが防止される。これにより、耳部がヒートシール等の封止部分に入り込むことが防止され、封止作業性が向上すると共に、外皮シートを強固に気密に封着することができる。   In the vacuum heat insulating material of the second invention, the ear portion is folded back to the bottom surface side of the core material housing portion, so that the ear portion is pressed by the core material main body portion. Therefore, it is prevented that the ear part is restored and spread even if the hand is released from the core material. Thereby, it is prevented that an ear | edge part enters into sealing parts, such as heat seal, a sealing workability | operativity improves, and an outer sheet | seat sheet | seat can be sealed firmly airtightly.

コア材の耳部において、該コア材の中袋を構成するシート状素材が重ね合わされ、この重なり合ったシート状素材同士が接合手段により接合されている場合、この接合部分で耳部が硬くなる傾向がある。そのため、この接合手段によるシート状素材同士の接合部分は、耳部のコア材本体部からの張出方向の先端側（以下、単に先端側ということがある。）から該本体部側に離隔して設けられていることが好ましい。即ち、耳部におけるシート状素材同士の接合部分は、耳部の先端部にまで及んでいないことが好ましい。このようにすることにより、外皮シートに耳部の硬い端部が接触することがなくなるため、耳部の端部の接触により外皮シートが破れることをより確実に防止することができる。   When the sheet material constituting the inner bag of the core material is overlapped in the ear part of the core material and the overlapped sheet material is bonded by the bonding means, the ear part tends to be hard at the bonded part. There is. Therefore, the joining portion between the sheet-like materials by this joining means is separated from the leading end side (hereinafter, simply referred to as the leading end side) of the ear portion from the core material main body portion to the main body portion side. Are preferably provided. That is, it is preferable that the joint portion between the sheet-like materials in the ear portion does not reach the tip portion of the ear portion. By doing in this way, since the hard edge part of an ear | edge part does not contact an outer skin sheet, it can prevent more reliably that an outer skin sheet | seat is torn by contact of the edge part of an ear | edge part.

仮に、耳部の長手方向の両端部の先端側の角部が鋭角ないし直角の尖角状となっている場合、この角部が外皮シートに接触したときに、外皮シートが破れやすくなるおそれがあるが、耳部のうち、少なくともコア材本体部からの張出方向の途中部から先端側の部分を、該先端側ほど耳部の長手方向の両端部が該長手方向の中間側に接近した形状とすることにより、耳部の長手方向の両端部の先端側の角部が鈍角状などの外皮シートに負荷を掛けにくい形状となるため、この角部の接触により外皮シートが破れることをより確実に防止することができる。   If the corners on the tip side of both ends in the longitudinal direction of the ear part are acute or right-angled, the skin sheet may be easily torn when this corner comes into contact with the skin sheet. However, at least the part on the tip side from the middle part in the protruding direction from the core material main body part of the ear part, both ends in the longitudinal direction of the ear part approached the intermediate side in the longitudinal direction toward the tip side. By adopting the shape, the corners on the tip side of the both ends in the longitudinal direction of the ear part become a shape that makes it difficult to apply a load to the outer sheet such as an obtuse angle. It can be surely prevented.

実施の形態に係る真空断熱材に用いられるコア材の構成図である。It is a block diagram of the core material used for the vacuum heat insulating material which concerns on embodiment. コア材の耳部の折り畳み方法を示す斜視図である。It is a perspective view which shows the folding method of the ear | edge part of a core material. コア材の耳部の折り畳み方法を示す斜視図である。It is a perspective view which shows the folding method of the ear | edge part of a core material. 耳部が折り畳まれたコア材を示す斜視図である。It is a perspective view which shows the core material by which the ear | edge part was folded. 実施の形態に係る真空断熱材の製造方法を示す断面図である。It is sectional drawing which shows the manufacturing method of the vacuum heat insulating material which concerns on embodiment. 実施の形態に係る真空断熱材の断面図である。It is sectional drawing of the vacuum heat insulating material which concerns on embodiment. 別の実施の形態に係る真空断熱材のコア材耳部の折り畳み方法を示す斜視図と平面図である。It is the perspective view and top view which show the folding method of the core material ear | edge part of the vacuum heat insulating material which concerns on another embodiment. コア材の耳部の折り畳み方法を示す斜視図と平面図である。It is the perspective view and top view which show the folding method of the ear | edge part of a core material. コア材の耳部の折り畳み方法を示す斜視図である。It is a perspective view which shows the folding method of the ear | edge part of a core material. 耳部を折り返したコア材を示す斜視図である。It is a perspective view which shows the core material which turned the ear | edge part. 図１０のコア材を用いた真空断熱材の製造方法を示す斜視図と平面図である。It is the perspective view and top view which show the manufacturing method of the vacuum heat insulating material using the core material of FIG. さらに別の実施の形態に係る真空断熱材の断面図である。It is sectional drawing of the vacuum heat insulating material which concerns on another embodiment. コア材の耳部の他の形状例を示す平面図である。It is a top view which shows the other example of a shape of the ear | edge part of a core material.

図１〜６を参照して第１の実施の形態について説明する。   A first embodiment will be described with reference to FIGS.

図１は第１発明の実施の形態に係る真空断熱材に用いられるコア材の製造方法及びその耳部の折り畳み方法を示すものである。なお、図１（ｃ）は図１（ｂ）のＣ−Ｃ線断面図である。まず、（ａ）図のように、１枚の不織布、紙など通気性を有したシート状素材よりなる素材シート１を筒状に巻き、巻き方向の両端を重ね合わせ、この合わせ部１ａを接着剤やヒートシールなどの接合手段によって接合して筒状体とする。次に、この筒状体の一方の開口部を接着剤やヒートシールなどの接合手段で封じ、袋状とした後、粉状、繊維状などの充填物２を充填し、他方の開口部を接着剤やヒートシールなどの接合手段によって封止する。これにより、開口部が封止された中袋が構成されると共に、該中袋内に充填物２が封入される。次いで、この充填物２が封入された中袋を必要に応じてプレス及び乾燥して、（ｂ）図に示す方形盤状のコア材３とする。   FIG. 1 shows a method for manufacturing a core material used for a vacuum heat insulating material according to an embodiment of the first invention and a method for folding an ear part thereof. Note that FIG. 1C is a cross-sectional view taken along the line CC of FIG. First, as shown in FIG. 1 (a), a material sheet 1 made of a sheet-like material having air permeability such as a single nonwoven fabric or paper is wound in a cylindrical shape, and both ends in the winding direction are overlapped, and this mating portion 1a is bonded. Joined by joining means such as an agent or heat seal to form a cylindrical body. Next, after sealing one opening of this cylindrical body with a bonding means such as an adhesive or heat seal to form a bag, it is filled with a filler 2 such as powder or fiber, and the other opening is filled with Sealing is performed by a bonding means such as an adhesive or heat seal. As a result, an inner bag with the opening sealed is formed, and the filling 2 is enclosed in the inner bag. Next, the inner bag in which the filler 2 is sealed is pressed and dried as necessary to obtain a rectangular disk-shaped core material 3 shown in FIG.

このコア材３は、充填物２が充填された、所定厚みを有した盤状の本体部３ｂと、該本体部３ｂの両辺から耳状に張り出した耳部３ａとを有する。この耳部３ａは、本体部３ｂの辺に沿って延在する細長い長方形状となっている。   The core material 3 includes a disk-shaped main body portion 3b having a predetermined thickness and filled with the filler 2, and ear portions 3a projecting in an ear shape from both sides of the main body portion 3b. The ear portion 3a has an elongated rectangular shape extending along the side of the main body portion 3b.

この実施の形態では、耳部３ａのうち本体部３ｂに沿う部分にヒートシール部３ｅ（素材シート１同士の前記接合手段による接合部分）が形成されている。このヒートシール部３ｅは、耳部３ａの張出方向の先端部から該本体部３ｂ側に離隔して形成されていることが好ましく、特に耳部３ａの張出方向の基端部から途中部にかけて形成されていることが好ましい。耳部３ａの張出方向におけるヒートシール部３ｅの幅（以下、単にヒートシール部３ｅの幅ということがある。）は、完成した真空断熱材の厚み（以下、単に真空断熱材の厚みということがある。）の１／２の寸法〜該真空断熱材の厚みと同寸法であることが好ましい。ヒートシール部３ｅの幅が真空断熱材の厚みの１／２の寸法よりも小さいと、このヒートシール部３ｅによる素材シート１同士の間の封止が不十分となり、該素材シート１同士の間から充填物２が漏れやすくなるおそれがある。ヒートシール部３ｅの幅が真空断熱材の厚みよりも大きいと、耳部３ａを本体部３ｂの上面側又は下面側（この上下方向は、図１（ｃ）における上下方向をいう。以下、同様。）に折り返す場合に、耳部３ａのうち本体部３ｂの上面又は下面に重なる部分までヒートシール部３ｅによって硬くなっているため、耳部３ａが本体部３ｂの上面又は下面から離反しやすく、コア材３を後述の外皮シート６のコア材収容部６ａに挿入する際の作業性が悪化するおそれがある。ただし、本発明は、耳部３ａの全体にヒートシールが施されることを否定するものではない。   In this embodiment, a heat seal portion 3e (joint portion by the joining means between the material sheets 1) is formed in a portion along the main body portion 3b of the ear portion 3a. The heat seal portion 3e is preferably formed so as to be separated from the distal end portion of the ear portion 3a in the protruding direction toward the main body portion 3b, and in particular, the middle portion from the proximal end portion of the ear portion 3a in the protruding direction. It is preferable that it is formed over. The width of the heat seal portion 3e in the protruding direction of the ear portion 3a (hereinafter sometimes simply referred to as the width of the heat seal portion 3e) is the thickness of the completed vacuum heat insulating material (hereinafter simply referred to as the thickness of the vacuum heat insulating material). It is preferable that it is the same dimension as the thickness of the vacuum heat insulating material. If the width of the heat seal portion 3e is smaller than half the dimension of the thickness of the vacuum heat insulating material, sealing between the material sheets 1 by the heat seal portion 3e becomes insufficient, and between the material sheets 1 Therefore, there is a risk that the filling 2 is likely to leak. When the width of the heat seal portion 3e is larger than the thickness of the vacuum heat insulating material, the ear portion 3a is connected to the upper surface side or the lower surface side of the main body portion 3b (this vertical direction refers to the vertical direction in FIG. )), Since the heat seal portion 3e hardens the portion of the ear portion 3a that overlaps the upper surface or the lower surface of the main body portion 3b, the ear portion 3a is easily separated from the upper surface or the lower surface of the main body portion 3b. There is a possibility that workability at the time of inserting the core material 3 into the core material accommodating portion 6a of the outer skin sheet 6 described later may be deteriorated. However, the present invention does not deny that the entire ear portion 3a is heat-sealed.

上記の充填物２としては、シリカ粉などのセラミック粒子や、繊維集合体、発泡樹脂など各種のものを用いることができる。   As said filler 2, various things, such as ceramic particle | grains, such as a silica powder, a fiber assembly, and foamed resin, can be used.

図１（ｂ）のように、耳部３ａは平たく延在しているのに対し、本体部３ｂは充填物２が充填されて膨らんでいるため、耳部３ａの長手方向の長さは本体部３ｂの該方向の長さよりも大きい。そのため、単に耳部３ａを本体部３ｂ側に折り返したのでは後述の図７（ａ），（ｂ）及び図１０のようにコア材３の４個のコーナー部が側方に突出する。そして、このコーナー部は、ヒートシールによる硬いヒートシール部３ｅで構成されるため、外皮フィルムを突き破り易い。   As shown in FIG. 1B, the ear 3a extends flat, whereas the main body 3b is filled with the filler 2 and swells. Therefore, the length of the ear 3a in the longitudinal direction is the main body. It is larger than the length of the part 3b in this direction. Therefore, if the ear portion 3a is simply folded back toward the main body portion 3b, the four corner portions of the core material 3 protrude laterally as shown in FIGS. 7A, 7B and 10 described later. And since this corner part is comprised with the hard heat-sealing part 3e by heat sealing, it is easy to pierce a skin film.

そこで、この実施の形態では、コア材のコーナー部が丸みを帯びるように耳部３ａを折り畳む。すなわち、図１（ｄ）及び図２に示すように、耳部３ａを約９０°折り立てた後、本体部３ｂの側面のうち耳部３ａの近傍を指Ｆや押圧部材によって押さえる。そして、図１（ｅ）及び図３のように、耳部３ａの長手方向両端部３ｓを本体部３ｂの側面に沿うように折る。この状態から耳部３ａの長手方両端部３ｓを矢印ｍ方向にさらに折り返して耳部３ａに重ね、この耳部３ａ及び両端部３ｓを本体部３ｂ上に重ねるように図３の矢印θのように折り重ね、図４の折り畳み完了状態とする。このように耳部３ａを折り畳んだコア材３は、図４の通り、４個のコーナー部がいずれも丸みを帯びたものとなる。   Therefore, in this embodiment, the ear portion 3a is folded so that the corner portion of the core material is rounded. That is, as shown in FIG.1 (d) and FIG.2, after the ear | edge part 3a is bent about 90 degree | times, the vicinity of the ear | edge part 3a is pressed with the finger | toe F or a pressing member among the side surfaces of the main-body part 3b. Then, as shown in FIGS. 1 (e) and 3, the longitudinal ends 3s of the ear 3a are folded along the side surface of the main body 3b. From this state, both ends 3s in the longitudinal direction of the ear 3a are further folded in the direction of the arrow m and overlapped with the ear 3a, and the ear 3a and both ends 3s are overlapped on the main body 3b as shown by an arrow θ in FIG. And the folding completion state of FIG. 4 is obtained. The core material 3 in which the ear 3a is folded in this way has four rounded corners as shown in FIG.

なお、特に本発明を限定するものではないが、コア材３の耳部３ａの張出方向の幅Ｗ（図１（ｃ））は、真空断熱材の厚みの１／２以上の寸法、特に真空断熱材の厚みの１／２〜３倍程度の寸法であることが好ましい。このように構成することにより、コア材３を後述の外皮シート６のコア材収容部６ａに挿入する際に、耳部３ａを本体部３ｂの上面側又は下面側に折り重ねて挿入することができるので、コア材３を容易にコア材収容部６ａに挿入することが可能となる。   Although the present invention is not particularly limited, the width W (FIG. 1 (c)) of the lug 3a of the core material 3 is not less than 1/2 the thickness of the vacuum heat insulating material, in particular The size is preferably about 1/2 to 3 times the thickness of the vacuum heat insulating material. By comprising in this way, when inserting the core material 3 in the core material accommodating part 6a of the outer skin sheet 6 mentioned later, the ear | edge part 3a can be folded and inserted in the upper surface side or lower surface side of the main-body part 3b. Since it can do, it becomes possible to insert the core material 3 in the core material accommodating part 6a easily.

耳部３ａを本体部３ｂに重なるように折り返した後、接着剤等により耳部３ａを本体部３ｂの上面側又は下面側に仮留めすることが好ましい。このようにすることにより、コア材３を一層容易にコア材収容部６ａに挿入することが可能となる。   After the ear portion 3a is folded back so as to overlap the main body portion 3b, the ear portion 3a is preferably temporarily fixed to the upper surface side or the lower surface side of the main body portion 3b with an adhesive or the like. By doing in this way, it becomes possible to insert the core material 3 in the core material accommodating part 6a still more easily.

仮に耳部３ａの長手方向の両端部３ｓの先端側の角部が鋭角ないし直角の尖角状となっている場合、この角部が外皮シート６，７に接触したときに、外皮シート６，７が破れやすくなるおそれがある。そのため、例えば図１３のように、耳部３ａのうち、少なくとも本体部３ｂからの延出方向の途中部から先端側の部分を、該先端側ほど耳部３ａの長手方向の両端部３ｓが該長手方向の中間側に接近した形状とすることが好ましい。図１３では、耳部３ａの長手方向の両端部３ｓを斜めにカットされた形状としている。このように構成することにより、耳部３ａの長手方向の両端部３ｓの先端側の角部が鈍角状などの外皮シート６，７に負荷を掛けにくい形状となるので、この角部の接触により外皮シート６，７が破れることをより確実に防止することができる。なお、図１３では、耳部３ａの長手方向の両端部３ｓは、本体部３ｂの直近部分から斜めにカットされているが、それよりも先端側の部分から斜めにカットされてもよい。また、図１３では、耳部３ａの長手方向の両端部３ｓは直線状にカットされているが、円弧状等の曲線状にカットされてもよい。   If the corners on the tip side of both end portions 3s in the longitudinal direction of the ear 3a are acute or right-angled, when the corners contact the outer sheets 6, 7, the outer sheets 6, 7 may be easily broken. Therefore, for example, as shown in FIG. 13, at least the portion on the distal end side from the middle portion in the extending direction from the main body portion 3 b of the ear portion 3 a, the both end portions 3 s in the longitudinal direction of the ear portion 3 a toward the distal end side It is preferable to make the shape close to the middle side in the longitudinal direction. In FIG. 13, both end portions 3s in the longitudinal direction of the ear portion 3a have a shape cut obliquely. By configuring in this way, the corners on the front end side of both end portions 3s in the longitudinal direction of the ear portion 3a have a shape that is difficult to apply a load to the outer skin sheets 6 and 7 such as obtuse angles. It can prevent more reliably that the skin sheets 6 and 7 are torn. In FIG. 13, both end portions 3 s in the longitudinal direction of the ear portion 3 a are cut obliquely from the nearest portion of the main body portion 3 b, but may be cut obliquely from a portion closer to the tip than that. In FIG. 13, both end portions 3 s in the longitudinal direction of the ear portion 3 a are cut in a straight line shape, but may be cut in a curved shape such as an arc shape.

このコア材３を外皮シートで被包し、減圧下でシールして真空断熱材を製造する。   The core material 3 is encapsulated with a skin sheet and sealed under reduced pressure to produce a vacuum heat insulating material.

図６は、このコア材３を用いた真空断熱材５の断面図、図５は真空断熱材５の製造方法を示す断面図である。   FIG. 6 is a cross-sectional view of a vacuum heat insulating material 5 using the core material 3, and FIG. 5 is a cross-sectional view illustrating a method for manufacturing the vacuum heat insulating material 5.

この真空断熱材５は、方形の浅い凹所形状のコア材収容部６ａ及びフランジ部６ｆを有した外皮シート６と、平たいシート状の外皮シート７とによって減圧雰囲気下でコア材３を被包したものである。   The vacuum heat insulating material 5 encloses the core material 3 under a reduced pressure atmosphere by a skin sheet 6 having a square shallow recess-shaped core material accommodating portion 6a and a flange portion 6f and a flat sheet-like skin sheet 7. It is a thing.

真空断熱材５を製造するには、外皮シート６のコア材収容部６ａにコア材３を収容する。この際、耳部３ａが本体部３ｂの下側となるように（即ち、図４とは天地逆となるように）コア材３をコア材収容部６ａに入れ、耳部３ａが復元することを防止する。次いで、上側外皮シート７を重ね、減圧雰囲気下で外皮シート６，７の合わせ部をヒートシール（融着）、溶接、圧着、接着など（この実施の形態ではヒートシール機８によるヒートシール）によって封止して真空断熱材５を製造する。   In order to manufacture the vacuum heat insulating material 5, the core material 3 is accommodated in the core material accommodating portion 6 a of the outer skin sheet 6. At this time, the core material 3 is put into the core material accommodating portion 6a so that the ear portion 3a is below the main body portion 3b (that is, upside down from FIG. 4), and the ear portion 3a is restored. To prevent. Next, the upper skin sheet 7 is overlapped, and the mating portion of the skin sheets 6 and 7 is subjected to heat sealing (fusion), welding, pressure bonding, adhesion, and the like (heat sealing by the heat sealing machine 8 in this embodiment) in a reduced pressure atmosphere. The vacuum heat insulating material 5 is manufactured by sealing.

外皮シート６としては、樹脂シート、金属ラミネート樹脂シート、アルミなどの金属シートなど各種の非通気性のものを用いることができるが、この実施の形態では、ヒートシール可能な熱可塑性樹脂シート、又は金属ラミネート熱可塑性樹脂シート（好ましくはアルミラミネートフィルム）が用いられている。図６の符号５ａは、このヒートシールによる付着部を示している。   As the outer sheet 6, various non-breathable materials such as a resin sheet, a metal laminate resin sheet, and a metal sheet such as aluminum can be used. In this embodiment, a heat-sealable thermoplastic resin sheet, or A metal laminate thermoplastic resin sheet (preferably an aluminum laminate film) is used. The code | symbol 5a of FIG. 6 has shown the adhesion part by this heat seal.

このように構成された真空断熱材５にあっては、耳部３ａを折り畳んだコア材３の４個のコーナー部がいずれも丸みを帯びており、コア材３に角ばった角部は存在せず、この角部によって外皮シート６，７が突き破られることはない。このため、真空断熱材５の真空がブレークすることが防止される。   In the vacuum heat insulating material 5 configured as described above, the four corner portions of the core material 3 obtained by folding the ear portion 3a are all rounded, and there are no corner portions that are rounded on the core material 3. The outer sheets 6 and 7 are not pierced by these corners. For this reason, the vacuum of the vacuum heat insulating material 5 is prevented from breaking.

この実施の形態では、図５の通り、耳部３ａを本体部３ｂの下側にした状態でコア材３をコア材収容部６ａに収容するので、耳部３ａが本体部３ｂで押えつけられる。そのため、コア材３から手を離しても耳部３ａが復元して広がることが防止される。これにより、耳部３ａがヒートシール部分に入り込むことが防止され、ヒートシールの作業性が向上すると共に、外皮シート６，７を強固に気密に封着することができる。   In this embodiment, as shown in FIG. 5, since the core material 3 is accommodated in the core material accommodating portion 6a with the ear portion 3a on the lower side of the main body portion 3b, the ear portion 3a is pressed by the main body portion 3b. . Therefore, even if the hand is released from the core material 3, the ear portion 3 a is prevented from being restored and spread. Thereby, it is prevented that the ear | edge part 3a penetrates into a heat seal part, and while the workability | operativity of heat seal improves, it can seal the outer skin sheets 6 and 7 firmly airtightly.

［コア材３のコーナー部の折り畳み方法の他の例］
コア材３の４個のコーナー部に丸みがつくように耳部３ａを折り畳む別の方法について図７〜９を参照して説明する。 [Another example of folding method of the corner portion of the core material 3]
Another method for folding the ear 3a so that the four corners of the core material 3 are rounded will be described with reference to FIGS.

［図７のコア材３の折り畳み方法］
まず、図７（ａ），（ｂ）のように、耳部３ａを本体部３ｂ上に重ねるように折り返す。この状態では、前述の通り、耳部３ａの長手方向の両端部３ｓが本体部３ｂから側方に突出している。そこで、この実施の形態では、この耳部３ａの長手方向の両端部３ｓのコーナー側を斜めの折り返し線３ｋに沿って本体部３ｂの盤央側へ折り返す。折り返し線３ｋは耳部３ａの長手方向及び本体部３ｂの側辺方向のいずれに対しても、約３０〜６０°特に４０〜５０°程度の角度で斜交している。この折り返し線３ｋに沿う折り返しは、折り畳みが完了したときに耳部３ａの両端部３ｓが実質的に本体部３ｂの外方へ突出しない状態となるのであれば、該両端部３ｓの全体を本体部３ｂの盤央側へ折り返すものであってもよく、該両端部３ｓの一部を本体部３ｂの盤央側へ折り返すものであってもよい。 [Folding method of core material 3 in FIG. 7]
First, as shown in FIGS. 7A and 7B, the ear portion 3a is folded back so as to overlap the main body portion 3b. In this state, as described above, both end portions 3s of the ear portion 3a in the longitudinal direction protrude sideways from the main body portion 3b. Therefore, in this embodiment, the corner sides of both end portions 3s in the longitudinal direction of the ear portion 3a are folded back toward the center of the main body portion 3b along the oblique folding line 3k. The folding line 3k crosses at an angle of about 30 to 60 °, particularly about 40 to 50 ° with respect to both the longitudinal direction of the ear portion 3a and the side direction of the main body portion 3b. If the folding along the folding line 3k is such that both ends 3s of the ear 3a do not substantially protrude outward from the main body 3b when the folding is completed, the whole of the both ends 3s is removed from the main body 3b. The part 3b may be folded back to the center side, or part of the both end parts 3s may be folded back to the center part of the main body part 3b.

このように耳部３ａの長手方向の両端部３ｓのコーナー側を盤央側へ折り返すことにより、コア材３の４個のコーナー部が丸みを帯びた形状となるので、このコア材３を前記図５のように外皮シート６のコア材収容部６ａに収容し、外皮シート６，７同士を減圧下でヒートシールして真空断熱材を製造する。なお、この場合も、折り返した耳部３ａが本体部３ｂの下側となるようにコア材３をコア材収容部６ａに収容するのが好ましい。   Since the four corners of the core material 3 are rounded by folding the corners of both end portions 3s in the longitudinal direction of the ear 3a to the center of the panel, the core material 3 is As shown in FIG. 5, it accommodates in the core material accommodating part 6a of the outer sheet | seat 6, and the outer sheet | seats 6 and 7 are heat-sealed under pressure reduction, and a vacuum heat insulating material is manufactured. In this case as well, it is preferable to accommodate the core material 3 in the core material accommodating portion 6a so that the folded ear portion 3a is located below the main body portion 3b.

［図８のコア材３の折り畳み方法］
図８（ａ）〜（ｃ）のように、耳部３ａを本体部３ｂ上に重ねる際に、耳部３ａと本体部３ｂとの境界部３ｃの延在方向の両端側の該耳部３ａから本体部３ｂにかけての領域を、部分的に該境界部３ｃの延在方向の中間側へ折り返し、該耳部３ａと本体部３ｂとの間に挟み込む。これにより、コア材３の４個のコーナー部は、それぞれ、斜めに面取りされた如き形状の非突角状となる。なお、この折り畳み方法においても、コア材３の各コーナー部の折り返し線３ｋ’は、耳部３ａの長手方向及び本体部３ｂの側辺方向のいずれに対しても約３０〜６０°特に４０〜５０°程度の角度で斜交していることが好ましい。この折り返し線３ｋ’に沿う折り返しは、折り畳みが完了したときに耳部３ａの両端部３ｓが実質的に本体部３ｂの外方へ突出しない状態となるのであれば、該両端部３ｓの全体を境界部３ｃの延在方向の中間側へ折り返すものであってもよく、該両端部３ｓの一部を境界部３ｃの延在方向の中間側へ折り返すものであってもよい。 [Folding method of core material 3 in FIG. 8]
As shown in FIGS. 8A to 8C, when the ear portion 3a is overlaid on the main body portion 3b, the ear portions 3a on both ends in the extending direction of the boundary portion 3c between the ear portion 3a and the main body portion 3b. The region from the body portion 3b to the body portion 3b is partially folded back to the intermediate side in the extending direction of the boundary portion 3c and sandwiched between the ear portion 3a and the body portion 3b. Thereby, each of the four corner portions of the core material 3 has a non-projecting angle shape that is chamfered obliquely. In this folding method as well, the fold line 3k ′ at each corner of the core material 3 is approximately 30 to 60 °, particularly 40 to 40 ° in both the longitudinal direction of the ear 3a and the side of the main body 3b. It is preferable to cross at an angle of about 50 °. If the folding along the folding line 3k ′ is such that both ends 3s of the ear 3a do not substantially protrude outward from the main body 3b when the folding is completed, the entire both ends 3s are It may be folded back to the intermediate side in the extending direction of the boundary portion 3c, or part of the both end portions 3s may be folded back to the intermediate side in the extending direction of the boundary portion 3c.

［図９のコア材３の折り畳み方法］
まず、図１（ｄ）、図２及び図３で説明した折り方と同様の手順で図９（ａ）のように折る。なお、便宜上、耳部３ａを本体部３ｂの上面側（以下、上下方向は、図９（ａ）〜（ｃ）における上下方向と合致するものとする。）へ約９０°折り立てた後、耳部３ａの長手方向の両端部３ｓを本体部３ｂの側面に沿うように折ったときの折り線を３ｔで示す。 [Folding method of core material 3 in FIG. 9]
First, it is folded as shown in FIG. 9A by the same procedure as the folding method described with reference to FIG. 1D, FIG. 2 and FIG. For the sake of convenience, after folding the ear portion 3a to the upper surface side of the main body portion 3b (hereinafter, the vertical direction is the same as the vertical direction in FIGS. 9A to 9C), A fold line when the both end portions 3s in the longitudinal direction of the ear portion 3a are folded along the side surface of the main body portion 3b is indicated by 3t.

次に、図９（ｂ）のように、耳部３ａの先端側を本体部３ｂの上面に重ね合わせる。その際、本体部３ｂの側面に沿って折り立てられた耳部３ａの両端部３ｓのうち、本体部３ｂの上面と同高さ付近に位置する該耳部３ａの張出方向の途中部分３ｐを、それよりも上方に位置する該張出方向の先端側部分３ｑの下側に折り重ねつつ、折り線３ｔに沿う折りを解くように該先端側部分３ｑを側方へ広げる。途中部分３ｐよりも下方に位置する該張出方向の基端側部分３ｒは本体部３ｂの側面に重なったままとする。このとき、該途中部分３ｐと基端側部分３ｒとの間を折り線３ｍに沿って谷折りすると共に、該途中部分３ｐと先端側部分３ｑとの間を折り線３ｎに沿って山折りする。なお、この山折りとは、折り線３ｔに沿う折りを解く方向に凸に折ることをいい、谷折りとは、これと反対方向に凸に折ることをいう。折り線３ｍと折り線３ｎとは、折り線３ｔから離隔するほど両者の間隔が広くなるように斜めに延在しており、該折り線３ｔ側において、本体部３ｂの上面と略同高さで交わっている。この折り線３ｍと折り線３ｎとのなす角は１５〜７５°特に３０〜６０°であることが好ましい。   Next, as shown in FIG. 9B, the tip end side of the ear portion 3a is overlaid on the upper surface of the main body portion 3b. At that time, of both end portions 3s of the ear portion 3a folded along the side surface of the main body portion 3b, the middle portion 3p in the protruding direction of the ear portion 3a located near the same height as the upper surface of the main body portion 3b. Is folded to the lower side of the tip side portion 3q in the projecting direction located above it, and the tip side portion 3q is spread laterally so as to release the fold along the fold line 3t. The base end side portion 3r in the projecting direction located below the midway portion 3p is kept overlapping the side surface of the main body portion 3b. At this time, a valley fold is formed along the fold line 3m between the intermediate portion 3p and the proximal end portion 3r, and a mountain fold is formed between the intermediate portion 3p and the distal end portion 3q along the fold line 3n. . In addition, this mountain fold means that it folds convexly in the direction of unfolding along the fold line 3t, and valley fold means that it folds convexly in the opposite direction. The fold line 3m and the fold line 3n extend obliquely so that the distance between the fold line 3t and the fold line 3t increases as the distance between the fold line 3t and the fold line 3n increases. We are in a cross. The angle formed by the fold line 3m and the fold line 3n is preferably 15 to 75 °, particularly 30 to 60 °.

その後、図９（ｃ）のように、該先端側部分３ｑを、本体部３ｂの側面に沿う折り線３ｔ’に沿って下方へ折り返し、本体部３ｂの側面に重ねる。このように折り畳むことにより、耳部３ａの長手方向の両端部３ｓは、本体部３ｂの側面に折り重なった状態となるため、該両端部３ｓの硬い部分が本体部３ｂの外方へ突出せず、コア材３の４個のコーナー部がそれぞれ非突角状となる。   Thereafter, as shown in FIG. 9C, the distal end side portion 3q is folded downward along a fold line 3t 'along the side surface of the main body portion 3b and overlapped with the side surface of the main body portion 3b. By folding in this way, both end portions 3s in the longitudinal direction of the ear portion 3a are folded on the side surface of the main body portion 3b, so that hard portions of the both end portions 3s do not protrude outward from the main body portion 3b. The four corners of the core material 3 are each non-angular.

上記第１発明では、コア材３の４個のコーナー部に丸みをつけているが、第２発明は、耳部３ａを単に本体部３ｂの下側に折り返したものである。この実施の形態について図１０を参照して説明する。   In the first invention, the four corners of the core material 3 are rounded. However, in the second invention, the ear 3a is simply folded back to the lower side of the main body 3b. This embodiment will be described with reference to FIG.

図１０のように、コア材３の耳部３ａを本体部３ｂの下側に折り重ねた状態とし、このコア材３を下側外皮シート３のコア材収容部６ａ（図１０では図示略）に収容する。この実施の形態でも、耳部３ａが本体部３ｂの下側となるので、コア材３から手を離しても耳部３ａが広がらない。   As shown in FIG. 10, the ear portion 3 a of the core material 3 is folded to the lower side of the main body portion 3 b, and the core material 3 is a core material accommodation portion 6 a (not shown in FIG. 10) of the lower skin sheet 3. To house. Also in this embodiment, since the ear part 3a is on the lower side of the main body part 3b, the ear part 3a does not spread even if the hand is released from the core material 3.

上記の下側外皮シート６のコア材収容部６ａは、平坦なシート状素材に熱プレス加工を施すことにより形成されることが好ましい。   The core material accommodating portion 6a of the lower skin sheet 6 is preferably formed by subjecting a flat sheet material to hot pressing.

熱プレス加工によってコア材収容部６ａを形成した外皮シート６にあっては、図１１（ａ），（ｂ）のように、コア材収容部６ａの隣接する側壁部６ｗ同士が交わるコーナー部６ｒは、丸みを帯びている。また、前述の図１（ｂ）のように、耳部３ａは平たく延在しているのに対し、本体部３ｂは充填物が充填されて膨らんでいるため、耳部３ａの長手方向の長さは、充填物２が充填された本体部３ｂの該方向の長さよりも若干大きい。そのため、耳部３ａの長手方向の両端は本体部３ｂから少しだけ耳部３ａの長手方向に張り出している。このため、耳部３ａを折り返した図１０のコア材３は、コーナー部が側方に張り出している。そして、この図１０のコア材３の耳部３ａの長手方向両端側には、硬くて角張った突角状部Ｅ（図１１）が生じる。そこで、図１０のコア材３については、図１１のように、この耳部３ａの長手方向両端側を、湾曲したコーナー部６ｒに乗せ、この状態で、上側外皮シート７（図１１では図示略）を被せ、外皮シート６，７をヒートシールし、真空断熱材を製造するのが好ましい。このようにして製造された真空断熱材にあっては、耳部３ａを折り返すことにより形成されたコア材３の硬い突角状部Ｅが外皮シート６，７に挟まれているので、この硬い突角状部Ｅが外皮シート６，７を突き破ることがない。   In the outer sheet 6 in which the core material accommodating portion 6a is formed by hot pressing, as shown in FIGS. 11A and 11B, the corner portion 6r where adjacent side wall portions 6w of the core material accommodating portion 6a intersect each other. Is rounded. In addition, as shown in FIG. 1B, the ear 3a extends flat, whereas the main body 3b is filled with a filler and swells, so that the length of the ear 3a in the longitudinal direction is increased. The length is slightly larger than the length of the main body 3b filled with the filler 2 in this direction. Therefore, both ends of the ear part 3a in the longitudinal direction protrude slightly from the main body part 3b in the longitudinal direction of the ear part 3a. For this reason, as for the core material 3 of FIG. 10 which turned up the ear | edge part 3a, the corner part has protruded to the side. Then, hard and angular protrusions E (FIG. 11) are formed on both ends in the longitudinal direction of the ear 3a of the core material 3 of FIG. Therefore, with respect to the core material 3 in FIG. 10, as shown in FIG. 11, both ends in the longitudinal direction of the ear portion 3a are placed on the curved corner portion 6r, and in this state, the upper skin sheet 7 (not shown in FIG. 11). ), And heat-seal the skin sheets 6 and 7 to produce a vacuum heat insulating material. In the vacuum heat insulating material manufactured in this way, since the hard projecting corner E of the core material 3 formed by folding the ear portion 3a is sandwiched between the outer skin sheets 6 and 7, this hard The projecting corner E does not break through the outer sheets 6 and 7.

上記実施の形態では１枚の下側外皮シート６に１個のコア材収容部６ａが設けられているが、図１２に示す真空断熱材５’のように、１枚の下側外皮シート６’に複数個のコア材収容部６ａが設けられてもよい。   In the above embodiment, one core material accommodating portion 6a is provided in one lower skin sheet 6, but one lower skin sheet 6 as in the vacuum heat insulating material 5 'shown in FIG. A plurality of core material accommodating portions 6a may be provided on '.

図示の実施の形態はいずれも本発明の一例であり、本発明は図示以外の形態とされてもよい。外皮シート６，７は別体であってもよく、一連であってもよい。   The illustrated embodiments are merely examples of the present invention, and the present invention may be configured other than illustrated. The skin sheets 6 and 7 may be separate bodies or a series.

上記実施の形態では、コア材３の中袋は、１枚の素材シート１を筒状に巻き、巻き方向の両端の合わせ部１ａを接合して筒状体とし、次いでこの筒状体の一方の開口部を封止して袋状とした後、充填物２を充填し、他方の開口部を封止したものであり、該巻き方向と直交する方向の両端側にそれぞれ耳部３ａが形成されたものとなっているが、中袋の構成はこれに限定されない。例えば、中袋は、１枚の素材シート１を二つ折りしてその間に充填物２を配置し、該素材シート１の折り目以外の３辺の合わせ部を接合したものであってもよい。この場合、該素材シート１の３辺に沿って耳部３ａが形成される。中袋は、複数枚の素材シート１で充填物２を被包したものであってもよい。具体的には、例えば外皮シート６，７と同様に、２枚の素材シート１，１の間に充填物２を配置し、この素材シート１，１の４辺の合わせ部を接合したものであってもよい。この場合、該素材シート１，１の４辺に沿って耳部３ａが形成される。なお、中袋は、３枚以上の素材シート１で充填物２を被包したものであってもよい。素材シート１は、初めから筒状又は袋状に成形されたものであってもよい。   In the above embodiment, the inner bag of the core material 3 is formed by winding a single sheet of material 1 into a cylindrical shape, joining the mating portions 1a at both ends in the winding direction to form a cylindrical body, and then one of the cylindrical bodies. After sealing the opening of the bag into a bag shape, the filler 2 is filled and the other opening is sealed, and ears 3a are formed on both ends in the direction perpendicular to the winding direction. However, the configuration of the inner bag is not limited to this. For example, the inner bag may be one in which one material sheet 1 is folded in two, the filler 2 is disposed between them, and the mating portions on the three sides other than the folds of the material sheet 1 are joined. In this case, ears 3 a are formed along the three sides of the material sheet 1. The inner bag may be one in which the filling material 2 is encapsulated with a plurality of material sheets 1. Specifically, for example, as in the case of the skin sheets 6 and 7, the filler 2 is disposed between the two material sheets 1 and 1, and the joining portions of the four sides of the material sheets 1 and 1 are joined. There may be. In this case, the ear | edge part 3a is formed along 4 sides of this raw material sheet | seat 1,1. The inner bag may be one in which the filler 2 is encapsulated with three or more material sheets 1. The material sheet 1 may be formed into a cylindrical shape or a bag shape from the beginning.

１ 素材シート
１ａ 合わせ部
２ 充填物
３ コア材
３ａ 耳部
３ｂ 本体部
５，５’ 真空断熱材
５ａ 封着部
６ 下側外皮シート
６ａ コア材収容部
７ 上側外皮シート
８ ヒートシール機 DESCRIPTION OF SYMBOLS 1 Material sheet 1a Matching part 2 Filling material 3 Core material 3a Ear part 3b Main body part 5,5 'Vacuum heat insulating material 5a Sealing part 6 Lower skin sheet 6a Core material accommodating part 7 Upper skin sheet 8 Heat seal machine

Claims (7)

コア材を外皮シートで被包した真空断熱材であって、
該コア材は、盤状の本体部と、該本体部から張り出す耳部とを有し、該耳部が該本体部に重なるように折り返されており、
該外皮シートの周縁部が封着されている真空断熱材において、
該コア材のコーナー部が、非突角状となるように折り畳まれていることを特徴とする真空断熱材。 A vacuum insulation material in which a core material is encapsulated with an outer sheet,
The core material has a disk-shaped main body portion and an ear portion protruding from the main body portion, and the ear portion is folded so as to overlap the main body portion.
In the vacuum heat insulating material in which the peripheral part of the outer skin sheet is sealed,
A vacuum heat insulating material, wherein a corner portion of the core material is folded so as to have a non-projection angle shape. 請求項１において、前記耳部の長手方向両端側の少なくとも一部が、耳部と前記本体部との間に折り込まれていることを特徴とする真空断熱材。   2. The vacuum heat insulating material according to claim 1, wherein at least a part of each end portion in the longitudinal direction of the ear portion is folded between the ear portion and the main body portion. 請求項１において、前記耳部が前記本体部に重なるように折り返された後、耳部の長手方向両端側の少なくとも一部が、該コア材の側辺に対し斜交する折り返し線に沿って折り返されていることを特徴とする真空断熱材。   In Claim 1, After the said ear | edge part is folded back so that it may overlap with the said main-body part, at least one part of the longitudinal direction both ends side of an ear | edge part is along the folding line which crosses with respect to the side edge of this core material. A vacuum heat insulating material characterized by being folded. 請求項１ないし３のいずれか１項において、前記外皮シートとして、コア材の前記本体部を収容したコア材収容部と、該コア材収容部から張り出すフランジ部とを有した第１の外皮シートと、該第１の外皮シートに被さる第２の外皮シートとを備えており、
前記コア材の耳部は、該コア材収容部の底面側に折り返されていることを特徴とする真空断熱材。 The first outer skin according to any one of claims 1 to 3, wherein the outer skin sheet includes a core material accommodating portion that accommodates the main body portion of the core material, and a flange portion that projects from the core material accommodating portion. A sheet and a second skin sheet covering the first skin sheet,
The vacuum heat insulating material, wherein the ear portion of the core material is folded back to the bottom surface side of the core material housing portion. コア材を外皮シートで被包した真空断熱材であって、
該コア材は、盤状の本体部と、該本体部から張り出す耳部とを有し、該耳部が該本体部に重なるように折り返されており、
該外皮シートの周縁部が封着されている真空断熱材において、
前記外皮シートとして、コア材の前記本体部を収容したコア材収容部と、該コア材収容部から張り出すフランジ部とを有した第１の外皮シートと、該第１の外皮シートに被さる第２の外皮シートとを備えており、
前記コア材の耳部は、該コア材収容部の底面側に折り返されていることを特徴とする真空断熱材。 A vacuum insulation material in which a core material is encapsulated with an outer sheet,
The core material has a disk-shaped main body portion and an ear portion protruding from the main body portion, and the ear portion is folded so as to overlap the main body portion.
In the vacuum heat insulating material in which the peripheral part of the outer skin sheet is sealed,
As the outer skin sheet, a first outer skin sheet having a core material accommodating portion accommodating the main body portion of the core material, a flange portion protruding from the core material accommodating portion, and a first covering sheet covering the first outer skin sheet. 2 skin sheets,
The vacuum heat insulating material, wherein the ear portion of the core material is folded back to the bottom surface side of the core material housing portion. 請求項１ないし５のいずれか１項において、前記コア材は、シート状素材よりなる中袋と、該中袋内に充填された充填物とを備えており、
前記耳部において、該シート状素材が重ね合わされ、この重なり合ったシート状素材同士が接合手段により接合されており、
該接合手段によるシート状素材同士の接合部分は、該耳部の前記本体部からの張出方向の先端側から該本体部側に離隔して設けられていることを特徴とする真空断熱材。 In any one of Claims 1 thru | or 5, The said core material is equipped with the inner bag which consists of a sheet-like raw material, and the filling with which it filled in this inner bag,
In the ear portion, the sheet-like material is overlaid, and the overlapping sheet-like materials are joined together by a joining means,
A vacuum heat insulating material characterized in that a joining portion between the sheet-like materials by the joining means is provided to be separated from the distal end side of the ear portion in the protruding direction from the body portion toward the body portion side. 請求項１ないし６のいずれか１項において、前記耳部のうち、少なくとも前記本体部からの張出方向の途中部から先端側の部分は、該先端側ほど該耳部の長手方向の両端部が該長手方向の中間側に接近した形状となっていることを特徴とする真空断熱材。   7. The ear portion according to any one of claims 1 to 6, wherein at least a portion from the middle portion in the protruding direction from the main body portion to the distal end side of the ear portion is closer to the distal end side in the longitudinal direction of the ear portion. Is a shape that is close to the intermediate side in the longitudinal direction.
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CN105443923A (en) * 2014-09-29 2016-03-30 福建赛特新材股份有限公司 Vacuum insulated panel
KR101787281B1 (en) 2016-08-31 2017-10-18 씨제이제일제당 (주) covering material for vacuum insulating panel
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