JP2007120795A - Refrigerator - Google Patents

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Publication number
JP2007120795A
JP2007120795A JP2005310515A JP2005310515A JP2007120795A JP 2007120795 A JP2007120795 A JP 2007120795A JP 2005310515 A JP2005310515 A JP 2005310515A JP 2005310515 A JP2005310515 A JP 2005310515A JP 2007120795 A JP2007120795 A JP 2007120795A
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Prior art keywords
sheet
decorative
layer
transparent
resin
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JP2005310515A
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Japanese (ja)
Inventor
Toru Kubota
亨 久保田
Masami Endo
正実 遠藤
Shigeo Tada
茂雄 多田
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Toshiba Corp
Toshiba Consumer Marketing Corp
Toshiba Lifestyle Products and Services Corp
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Toshiba Corp
Toshiba Consumer Marketing Corp
Toshiba Home Appliances Corp
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Application filed by Toshiba Corp, Toshiba Consumer Marketing Corp, Toshiba Home Appliances Corp filed Critical Toshiba Corp
Priority to JP2005310515A priority Critical patent/JP2007120795A/en
Priority to PCT/JP2006/319861 priority patent/WO2007049439A1/en
Priority to TW095138240A priority patent/TW200726950A/en
Publication of JP2007120795A publication Critical patent/JP2007120795A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00General constructional features
    • F25D23/02Doors; Covers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/18Aesthetic features

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Refrigerator Housings (AREA)
  • Laminated Bodies (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator easily provided with a design composition having a sense of high quality by decorating various patterns, characters, and design on an outline forming member such as a door. <P>SOLUTION: This refrigerator is characterized by that a box like outer plate 6 is formed by carrying out heating formation of a lamination sheet 20 wherein a decorative sheet 17 is adhered to one face of a transparent sheet 10 comprised of thermoplastic resin, and a body outline is formed by carrying out foam filling of hard heat insulation material 9 comprised of polyurethane in a decorative sheet side of the outer plate. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、冷蔵庫に係り、特に本体外郭を形成する扉などの意匠構成を向上させた冷蔵庫に関する。   The present invention relates to a refrigerator, and more particularly to a refrigerator having an improved design configuration such as a door that forms a main body outline.

一般に、家庭用冷蔵庫の開口部を開閉自在に閉塞する扉は、冷蔵庫表面に設けるものであり意匠的に重要な部品であることから、外観デザインを考慮した美麗なものであることが条件となる。そして近年では、アクリル樹脂などの透明樹脂からなる射出成形体の内側に凹凸成形や塗装による意匠模様を施し、これにキャップや内板を組み込み、断熱材を充填して形成した冷蔵庫扉が商品化されている(例えば、特許文献1参照)。また、透明樹脂製のパネルで外表面を覆われる鋼板製の外箱と前記パネルとの間に色彩、模様の樹脂フィルムを配置する構成が提案されている(特許文献2参照)。
特開2004−232887号公報 特開2004−278891号公報
Generally, a door that can be opened and closed to open the opening of a household refrigerator is provided on the refrigerator surface and is an important part of the design. Therefore, the door must be beautiful considering the external design. . In recent years, refrigerator doors have been commercialized, which have a design pattern by concavo-convex molding or painting on the inside of an injection-molded body made of transparent resin such as acrylic resin, and a cap and inner plate incorporated into it and filled with heat insulating material. (For example, refer to Patent Document 1). In addition, a configuration has been proposed in which a resin film having a color and a pattern is disposed between a steel plate outer box whose outer surface is covered with a transparent resin panel and the panel (see Patent Document 2).
Japanese Patent Application Laid-Open No. 2004-232828 JP 2004-278891 A

しかしながら、上記による透明アクリル樹脂などの射出成形体の内側に凹凸成形のほか塗装などによって着色する構成では、微細な模様とすることはできないことから意匠の自由度は少なく、また、多色模様とするためには、マスキングを施すなどの煩雑さの面から実質的に実施は困難であり、従来方法では充分な高級感を持った意匠構成を得ることはできなかった。   However, in the structure in which the inside of the injection molded body such as transparent acrylic resin is colored by unevenness molding or painting, the design can be made into a fine pattern, so the degree of freedom of the design is small, and the multicolor pattern In order to achieve this, it is practically difficult to carry out masking and other complicated processes, and the conventional method cannot provide a design structure with a sufficiently high-class feeling.

本発明は上記点を考慮してなされたもので、扉などの外郭形成部材に様々なパターンや文字、模様を加飾することができ、高級感を持った意匠構成が容易に得られる冷蔵庫を提供することを目的とする。   The present invention has been made in consideration of the above points, and a refrigerator that can decorate various patterns, characters, and patterns on an outer forming member such as a door and can easily obtain a high-quality design structure. The purpose is to provide.

上記課題を解決するため本発明による冷蔵庫は、熱可塑性樹脂からなる透明シートの一面に加飾シートを接着した積層シートを加熱成形して箱状の外板を形成し、前記外板の加飾シート側にポリウレタンからなる硬質断熱材を発泡充填して本体外郭を形成したことを特徴とするものである。   In order to solve the above-mentioned problems, a refrigerator according to the present invention forms a box-shaped outer plate by thermoforming a laminated sheet obtained by bonding a decorative sheet to one surface of a transparent sheet made of a thermoplastic resin, and decorates the outer plate. The main body outline is formed by foaming and filling a hard insulating material made of polyurethane on the sheet side.

本発明によれば、外郭表面に透明樹脂を介して模様や文字を自由に施すことができるので、意匠バリエーションの幅を格段に広げて高級感を持った冷蔵庫を容易に得ることができる。   According to the present invention, since a pattern and characters can be freely applied to the outer surface via a transparent resin, it is possible to easily obtain a high-quality refrigerator by greatly expanding the range of design variations.

以下、図面に基づき本発明の1実施形態について説明する。図1にその外観正面図を示す冷蔵庫(1)は、断熱された貯蔵庫内を冷蔵室や野菜室、冷凍室や製氷室など多数の貯蔵室に区分し、それぞれの室の開口部には開閉自在に枢支した観音開き方式の冷蔵室扉(2)や引出し式の製氷室扉(3)や野菜室扉(4)、冷凍室扉(5)などを設けている。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The refrigerator (1), whose front view is shown in FIG. 1, is divided into a large number of storage rooms such as a refrigerator room, a vegetable room, a freezer room and an ice making room, and the opening of each room is opened and closed. The door-opening type refrigerator compartment door (2), the drawer-type ice making compartment door (3), the vegetable compartment door (4), the freezer compartment door (5), etc. which are pivotally supported are provided.

図2は、その中のひとつである冷蔵室扉(2)のA−A線に沿った横断面図であり、扉の外郭を形成する箱状の外板(6)と、シールガスケットの装着部(8)を形成した内板(7)とを結合し、それらの内面の空間部に発泡断熱材(9)を充填して一体化したものである。   FIG. 2 is a cross-sectional view taken along the line AA of the refrigerator compartment door (2), which is one of them, and a box-like outer plate (6) that forms the outer shell of the door, and mounting of a seal gasket The inner plate (7) on which the portion (8) is formed is joined, and the space portion of the inner surface is filled with the foam heat insulating material (9) and integrated.

しかして、前記外板(6)は、その外表面に透明体からなる外面シート(10)を配しており、下層部に位置するフィルムシート(12)に印刷された加飾印刷層(11)が視認できるように一体に形成されている。   Thus, the outer plate (6) has an outer surface sheet (10) made of a transparent body on its outer surface, and a decorative print layer (11) printed on the film sheet (12) located in the lower layer portion. ) Is formed integrally so that it can be visually recognized.

図3に外板(6)部分の詳細断面を示すように、前記外面シート(10)は、1〜3mm厚の透明アクリル樹脂シートで形成されており、フィルムシート(12)は200μm厚のポリプロピレン樹脂フィルムで形成され、その表面に絵柄や模様、あるいは文字などの加飾印刷(11)を施し、これをバインダー(13)を介して外面シート(10)に接着して一体化している。   As shown in the detailed cross section of the outer plate (6) in FIG. 3, the outer sheet (10) is formed of a transparent acrylic resin sheet having a thickness of 1 to 3 mm, and the film sheet (12) is a polypropylene having a thickness of 200 μm. It is formed of a resin film, and decorative printing (11) such as a pattern, pattern, or character is applied to the surface, and this is bonded and integrated with the outer sheet (10) via a binder (13).

前記加飾印刷された層(11)のフィルムシート(12)側には、不透明層(14)を設けており、さらに、フィルムシート(12)の下面には発泡断熱材(9)との密着性を大きくするためにバインダー層(15)を設け、これらを一体化して積層体としたシートを真空成形することで外板(6)を形成している。   An opaque layer (14) is provided on the film sheet (12) side of the decorative printed layer (11), and the lower surface of the film sheet (12) is in close contact with the foam insulation (9). In order to increase the properties, a binder layer (15) is provided, and the outer plate (6) is formed by vacuum forming a sheet obtained by integrating the binder layer (15).

外面シート(10)は、前記説明においては、アクリル樹脂としたが、これに限らず透明性を有する熱可塑性樹脂であればよく、例えば、ポリカーボネート(PC)樹脂、ポリスチレン(PS)樹脂、ポリプロピレン樹脂やAS樹脂、ABS樹脂などでもよい。この他、ポリ乳酸(PLA)ベースの樹脂を用いることも可能であり、特に、PLA樹脂とアクリル樹脂とを混合(アロイ)した樹脂シートを用いてもよい。   In the above description, the outer sheet (10) is an acrylic resin. However, the outer sheet (10) is not limited to this and may be any thermoplastic resin having transparency, for example, a polycarbonate (PC) resin, a polystyrene (PS) resin, a polypropylene resin. Or AS resin, ABS resin or the like. In addition, it is also possible to use a polylactic acid (PLA) -based resin, and in particular, a resin sheet obtained by mixing (alloying) a PLA resin and an acrylic resin may be used.

このように、アクリルとのアロイ樹脂を用いることで、より透明度が向上し、また、一般的に60℃程度で熱変形するPLA樹脂でも耐熱温度が高くなり、加熱時の剛性が増大して真空成形し易くなる効果が得られる。そしてまた、PLA樹脂を用いることで、自然界における炭酸ガスの生成量を抑制することができるため、環境汚染の少ない製品を提供することができる。   As described above, by using an alloy resin with acrylic, the transparency is further improved. In addition, a PLA resin that is generally thermally deformed at about 60 ° C. has a high heat resistance temperature, and the rigidity during heating is increased to increase the vacuum. The effect of facilitating molding is obtained. In addition, since the amount of carbon dioxide generated in nature can be suppressed by using PLA resin, a product with less environmental pollution can be provided.

また、外面シート(10)については、上記の他、表面側に透明アクリル樹脂、裏面側に透明ABS樹脂を設けてこれらを張り合わせたシートを用いてもよく、このように構成することで、耐衝撃性にやや劣るアクリル樹脂シートと、表面性がやや劣り、屈折率の関係から高級感にやや欠けるABS樹脂シートのそれぞれの欠点を補い、双方の長所を併せ持つシートを得ることができる。また、シート表面にハードコート処理を施せば、傷つきを抑制することができ、高級感を長期に亙って保持することができる。さらに裏面のフィルムシート(12)側にあらかじめシボ加工のような凹凸成形による装飾処理を施しておけば加飾による意匠効果を一層向上させることができる。   Further, for the outer sheet (10), in addition to the above, a sheet in which a transparent acrylic resin is provided on the front side and a transparent ABS resin is provided on the back side and these are bonded together may be used. It is possible to obtain a sheet having both advantages by making up for the disadvantages of the acrylic resin sheet that is slightly inferior in impact and the ABS resin sheet that is slightly inferior in surface property and slightly lacking in high-class feeling due to the refractive index. Moreover, if a hard coat process is performed on the sheet surface, scratching can be suppressed, and a high-class feeling can be maintained over a long period of time. Furthermore, if the back surface film sheet (12) side is preliminarily subjected to a decorative process such as concavo-convex forming, the design effect by decoration can be further improved.

前記外面シート(10)の下層に位置するフィルムシート(12)の表面には、外面シート(10)とフィルムシート(12)とを接着するバインダー(13)の層を設けている。このバインダー(13)は透明性を有しスクリーン印刷によって塗布される公知の接着剤であり、熱可塑性ウレタン樹脂や酢酸ビニル樹脂、塩化ビニル−酢酸ビニル共重合体、熱可塑性ポリエステル樹脂、ポリアミド樹脂、アイオノマー樹脂、塩素化ポリオレフィンなどの加熱によって融解し、樹脂シート同士を接着させる機能を有していればよいものである。なお、バインダー(13)の塗布方式は、前記樹脂を含むインクを生成して、スクリーン印刷やグラビア印刷などの印刷方法やロールコーターなどの塗装方法でおこなってもよい。   On the surface of the film sheet (12) located under the outer sheet (10), a layer of a binder (13) for bonding the outer sheet (10) and the film sheet (12) is provided. This binder (13) is a known adhesive that is transparent and is applied by screen printing. Thermoplastic urethane resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer, thermoplastic polyester resin, polyamide resin, It only needs to have a function of melting resin sheets by heating such as ionomer resin and chlorinated polyolefin and bonding the resin sheets together. The binder (13) may be applied by generating an ink containing the resin and using a printing method such as screen printing or gravure printing or a coating method such as a roll coater.

また、このバインダー(13)は、加熱硬化型の樹脂を用いてもよい。この場合、2液硬化型のバインダーを印刷によって塗布するものであるが、低分子量であることから溶剤に溶けやすく塗布しやすい長所があり、その後、加熱乾燥させてバインダーの樹脂を硬化させることで、バインダー自体の融点が高くなり、真空成形時やウレタンフォーム断熱材の発泡時の熱によってもバインダー層が再融解することがないので、剥がれる問題をなくすることができる。   The binder (13) may be a thermosetting resin. In this case, a two-component curable binder is applied by printing, but since it has a low molecular weight, it has the advantage of being easily dissolved in a solvent and easy to apply, and then heated and dried to cure the binder resin. The melting point of the binder itself is increased, and the binder layer is not remelted by heat at the time of vacuum forming or foaming of the urethane foam heat insulating material, so that the problem of peeling can be eliminated.

前記バインダー(13)の下層に施されている加飾印刷(11)は、前述のように、フィルムシート(12)の表面に絵柄や模様、文字など印刷して装飾効果を高めるものであり、絵柄は木目調や石目調、タイル調だけでなく、風景写真や絵画、あるいは幾何学模様などのグラビア印刷やスクリーン印刷、オフセット印刷やインクジェット印刷などあらゆる印刷技術によるものが適用でき、また、ロールコーターによる塗布も可能である。   The decorative printing (11) applied to the lower layer of the binder (13) is to enhance the decorative effect by printing a pattern, pattern, character, etc. on the surface of the film sheet (12) as described above. Patterns can be applied not only in woodgrain, stone, and tile, but also by landscape printing, painting, or any printing technology such as gravure printing, screen printing, offset printing, inkjet printing such as geometric patterns, and rolls Application by a coater is also possible.

不透明層(14)は、前記加飾印刷層(11)の下層の発泡断熱材(9)を表面側から見えなくするために設けられており、上層の加飾層(11)の発色と色再現性を良好にするために通常白色で不透明な印刷層としている。   The opaque layer (14) is provided to hide the foam insulation (9) below the decorative print layer (11) from the surface side, and the color and color of the upper decorative layer (11) In order to improve reproducibility, a white and opaque printed layer is usually used.

フィルムシート(12)は、真空成形によって自由に変形する柔軟性を有しておればよく、前記説明のようにポリプロピレン(PP)に限るものではなく、PETやPCなどの樹脂であってもよいものである。また実施例では、200μm厚程度のフィルムシートを用いたが、0.5〜2mm厚程度の樹脂シートであってもよく、この場合についても、樹脂シート上に加飾印刷(11)を施して外面シート(10)に接着し、これを真空成形するようにする。   The film sheet (12) only needs to have flexibility to be freely deformed by vacuum forming, and is not limited to polypropylene (PP) as described above, and may be a resin such as PET or PC. Is. In the examples, a film sheet having a thickness of about 200 μm was used, but a resin sheet having a thickness of about 0.5 to 2 mm may be used. In this case, decorative printing (11) is performed on the resin sheet. Adhere to the outer sheet (10) and vacuum form it.

なお、上記のように、フィルムシート(12)にPP樹脂を用いた場合には、PPが他の樹脂と比較して安価であるとともに、製造時における炭酸ガスの発生量が少ないことから、環境に対する負荷が小さく、また有害な触媒を使用していないことから、より環境保護に適した構成となる。   In addition, as mentioned above, when PP resin is used for the film sheet (12), PP is less expensive than other resins and the amount of carbon dioxide generated during production is small. Since the load on the battery is small and no harmful catalyst is used, the structure is more suitable for environmental protection.

また、水分透過性のきわめて低いPPのようなポリオレフィン系樹脂が、硬質ウレタンフォーム断熱材(9)の層と透明の外面シート(10)との間に介在していることから、外面シート(10)を介して外部から侵入する水や洗剤がフィルムシート(12)で阻止されるため、断熱材(9)内に侵入してウレタンフォームを加水分解させることによる劣化や亀裂の発生を抑制することができ、断熱性能の低下を防ぐことができる。   Further, since a polyolefin-based resin such as PP having a very low water permeability is interposed between the layer of the hard urethane foam heat insulating material (9) and the transparent outer sheet (10), the outer sheet (10 ) Water and detergent that enters from the outside through the film sheet (12) is blocked by the film sheet (12), so that the deterioration and cracking caused by intruding into the heat insulating material (9) and hydrolyzing the urethane foam are suppressed. It is possible to prevent deterioration of the heat insulation performance.

さらに、フィルムシート(12)をポリオレフィン系樹脂にすることで、ポリウレタンの発泡体内部から発生する有機ガスによる前記透明の外面シート(10)へのソルベントクラックを低減でき、品質信頼性を向上させることができる。   Furthermore, by making the film sheet (12) a polyolefin-based resin, it is possible to reduce solvent cracks to the transparent outer sheet (10) due to organic gas generated from the inside of the polyurethane foam, and to improve quality reliability. Can do.

フィルムシート(12)とウレタンフォーム断熱材(9)との間に設けたバインダー層(15)は、前述のバインダー(13)と同様、熱可塑性ウレタン樹脂や酢酸ビニル樹脂、塩化ビニル−酢酸ビニル共重合体、熱可塑性ポリエステル樹脂、ポリアミド樹脂、アイオノマー樹脂、塩素化ポリオレフィンなどの樹脂で形成すればよく、このバインダー層(15)によって、発泡断熱材(9)がフィルムシート(12)に強固に接着することから、断熱箱、例えば、断熱扉(2)として構造体の形状が保持されるとともに、大きな剛性強度を保有することができるものである。   The binder layer (15) provided between the film sheet (12) and the urethane foam heat insulating material (9) is made of thermoplastic urethane resin, vinyl acetate resin, vinyl chloride-vinyl acetate, as in the case of the binder (13). What is necessary is just to form with resin, such as a polymer, a thermoplastic polyester resin, a polyamide resin, an ionomer resin, and chlorinated polyolefin, and a foam heat insulating material (9) adheres firmly to a film sheet (12) by this binder layer (15). Therefore, the shape of the structure is maintained as a heat insulating box, for example, a heat insulating door (2), and a large rigidity can be retained.

また、この実施例におけるバインダー層(15)は、フィルムシート(12)面に施した火炎による表面処理で粗表面化したり、後述するように、発泡断熱材(9)側に不透明層(14)を配置させることによるウレタンフォームとの密着性を向上させた構成を採用することで不要とすることができる。   Further, the binder layer (15) in this example is roughened by a surface treatment with a flame applied to the surface of the film sheet (12), or an opaque layer (14) on the side of the foam heat insulating material (9) as described later. It can be made unnecessary by adopting a configuration in which the adhesiveness with the urethane foam is improved by arranging.

上記実施例においては、加飾印刷(11)を施す箇所を、フィルムシート(12)の表面に配置したが、図4に示すように、フィルムシート(12′)を透明体としてその下層に配置するようにしてもよく、下層に配置した場合は、前記バインダー(13′)はフィルムシート(12′)の上層に位置することから、バインダー(13′)を印刷する前に加飾印刷(11′)の層を乾燥処理する必要がなく、製造工程を簡素化することができる。   In the above embodiment, the place where the decorative printing (11) is applied is arranged on the surface of the film sheet (12). As shown in FIG. 4, the film sheet (12 ') is arranged as a transparent body in the lower layer. When arranged in the lower layer, the binder (13 ′) is positioned in the upper layer of the film sheet (12 ′), so that the decorative printing (11) is performed before the binder (13 ′) is printed. It is not necessary to dry the layer ′), and the manufacturing process can be simplified.

なお、不透明層(14)は、印刷のみでなくローラーコートで形成してもよいものであり、また、前記フィルムシート(12′)の発泡断熱材(9′)側の面に施してもよい。このように設けることで、フィルムシート(12′)が一般に断熱材である硬質ウレタンフォームと接着しにくいポリプロピレンフィルムであっても、不透明層(14′)に含まれる樹脂成分によってウレタンフォームとの密着性が向上し、より強固に断熱材(9′)と接着させることができるものであり、この場合、図5に示すように、発泡断熱材(9″)との間にバインダー層(15)を設ける必要がないため、コスト的に低減できる効果を奏する。   The opaque layer (14) may be formed not only by printing but also by roller coating, and may be applied to the surface of the film sheet (12 ′) on the side of the foam insulation (9 ′). . By providing in this way, even if the film sheet (12 ') is a polypropylene film that is difficult to adhere to the hard urethane foam, which is generally a heat insulating material, the film component (12') adheres to the urethane foam due to the resin component contained in the opaque layer (14 '). In this case, as shown in FIG. 5, the binder layer (15) is interposed between the foamed heat insulating material (9 ″) and the heat insulating material (9 ′). Since there is no need to provide the device, the cost can be reduced.

以下、図6により、前記1実施例の冷蔵庫扉(2)における外板(6)の1製造工程について詳細に説明する。まず、(a)に示すように、PP樹脂からなるフィルムシート(12)の上面に白色の不透明インクの層(14)を設ける。これは前述のように、スクリーン印刷でもローラーコートでもよい。次に、(b)で、前記不透明層(14)の上面にグラビア印刷などで加飾印刷(11)を施す。また、多色にするために複数回印刷をおこなうようにしてもよい。   Hereinafter, one manufacturing process of the outer plate (6) in the refrigerator door (2) of the first embodiment will be described in detail with reference to FIG. First, as shown in (a), a layer (14) of white opaque ink is provided on the upper surface of a film sheet (12) made of PP resin. As described above, this may be screen printing or roller coating. Next, in (b), decorative printing (11) is performed on the upper surface of the opaque layer (14) by gravure printing or the like. Further, printing may be performed a plurality of times to obtain multiple colors.

次いで、(c)で、加飾印刷層の表面に透明のバインダー(13)を塗布する。このとき(d)として、次工程までの間の埃の付着や傷付きを防ぐために、一時的に表面を保護フィルム(16)で覆うようにし、次に(e)として、扉形成時にウレタンフォーム断熱材(9)と接触する面に、前記バインダー(13)と基本的に同仕様のバインダー層(15)を配設して積層された加飾シート(17)を形成する。   Next, in (c), a transparent binder (13) is applied to the surface of the decorative printing layer. At this time, as (d), the surface is temporarily covered with a protective film (16) in order to prevent dust from being attached or scratched until the next process, and then (e), urethane foam when forming the door On the surface in contact with the heat insulating material (9), a decorative sheet (17) is formed by laminating a binder layer (15) having basically the same specifications as the binder (13).

次ステップにおいては、(f)に示すように、この加飾シート(17)における前記バインダー(13)の保護フィルム(16)を除去し、その上面にアクリル樹脂からなる外面シート(10)を加熱装置(18)を有するプレス機(19)によって加熱圧着する。このときのプレス圧力は約10kg/cmであり、密着させる温度は150℃、加圧時間は30秒間に設定する。これにより、バインダー(13)が融解し、加飾シート(17)と外面シート(10)とが密着状態に接着され、(g)に示す積層シート(20)が形成される。 In the next step, as shown in (f), the protective film (16) of the binder (13) in the decorative sheet (17) is removed, and the outer sheet (10) made of acrylic resin is heated on the upper surface. Heat pressing is performed by a press machine (19) having a device (18). The pressing pressure at this time is about 10 kg / cm 2 , the temperature for contact is set to 150 ° C., and the pressing time is set to 30 seconds. Thereby, a binder (13) melt | dissolves, a decorating sheet (17) and an outer surface sheet (10) are adhere | attached in the contact | adhered state, and the lamination sheet (20) shown to (g) is formed.

次に、予備加熱して軟化させた前記積層シート(20)を、(h)に概略的に示す成形型(21)に設置し、(i)のように真空ポンプ(22)で型内の空気を吸引することで積層シート(20)を所定形状に真空成形し、冷蔵庫扉(2)の外板(6)を得るものである。   Next, the laminated sheet (20) softened by preheating is placed in a molding die (21) schematically shown in (h), and the inside of the die is evacuated by a vacuum pump (22) as shown in (i). The laminated sheet (20) is vacuum formed into a predetermined shape by sucking air to obtain the outer plate (6) of the refrigerator door (2).

なお、積層シート(20)を外板(6)に成形する方法は、前記真空成形法に限るものではなく、シート状の被成形体の成形方法である圧空成形やプレス成形によっても同様に得ることができる。   The method for forming the laminated sheet (20) into the outer plate (6) is not limited to the vacuum forming method, and is similarly obtained by pressure forming or press forming, which is a method for forming a sheet-like object. be able to.

上記により所定形状に形成された外板(6)は、前述の図2に示すように、冷蔵室の内面側を形成する内板(7)と結合し、図示しない発泡成形型内に設置してその内部空間に硬質ウレタンフォーム断熱材(9)の原液を注入して発泡させ、充填固化することで内板(7)や外板(6)の前記バインダー層(15)、あるいは不透明印刷層(14″)と強固に接着した断熱材層(9)を有する断熱扉(2)を構成するものである。   As shown in FIG. 2, the outer plate (6) formed in the predetermined shape is combined with the inner plate (7) that forms the inner surface side of the refrigerator compartment, and is placed in a foaming mold (not shown). The stock solution of the rigid urethane foam heat insulating material (9) is injected into the inner space, foamed, and solidified by filling and solidifying the binder layer (15) of the inner plate (7) and outer plate (6), or an opaque printing layer. The heat insulating door (2) having the heat insulating material layer (9) firmly bonded to (14 ″) is formed.

なお、上記実施例においては、冷蔵庫の冷蔵室扉を例として説明したが、これに限ることなく野菜室や製氷室など他の扉に適用できることは言うまでもなく、さらに、扉に限らず、本体上部のテーブル板や外側板に適用して意匠効果を向上し高級感を持った外郭面を形成することも可能である。   In addition, in the said Example, although the refrigerator compartment door of the refrigerator was demonstrated as an example, it cannot be overemphasized that it is applicable not only to this but other doors, such as a vegetable room and an ice-making room, Furthermore, not only a door but main part upper part. It is also possible to improve the design effect and to form a high-grade outer surface by applying to the table plate and the outer plate.

本発明は、扉など本体外郭の意匠構成を向上させた冷蔵庫に利用することができる。   INDUSTRIAL APPLICATION This invention can be utilized for the refrigerator which improved the design structure of main body outer shells, such as a door.

本発明の1実施形態を示す冷蔵庫の外観正面図である。It is an external appearance front view of the refrigerator which shows one Embodiment of this invention. 図1の冷蔵室扉のA−A線に沿う断面図である。It is sectional drawing which follows the AA line of the refrigerator compartment door of FIG. 図2における扉外板の積層状態を示すの断面図である。It is sectional drawing which shows the lamination | stacking state of the door outer plate | plate in FIG. 図3に示す扉外板の他の実施例の断面図である。It is sectional drawing of the other Example of the door outer plate | board shown in FIG. 図3に示す扉外板のさらに他の実施例の断面図である。It is sectional drawing of the further another Example of the door outer plate | board shown in FIG. 図2に示す扉外板の製造過程を示す工程図である。It is process drawing which shows the manufacturing process of the door outer plate | board shown in FIG.

符号の説明Explanation of symbols

1 冷蔵庫本体 2 冷蔵室扉 6 扉外板
7 内板 9 断熱材 10 外面シート
11 加飾印刷層 12 フィルムシート 13 バインダー
14 不透明層 15 バインダー層 16 保護フィルム
17 加飾シート 19 プレス機 20 積層シート
21 成形型 22 真空ポンプ
DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Refrigeration room door 6 Door outer plate 7 Inner plate 9 Heat insulating material 10 Outer sheet
11 Decorative printing layer 12 Film sheet 13 Binder
14 Opaque layer 15 Binder layer 16 Protective film
17 Decorative sheet 19 Press machine 20 Laminated sheet
21 Mold 22 Vacuum pump

Claims (6)

熱可塑性樹脂からなる透明シートの一面に加飾シートを接着した積層シートを加熱成形して箱状の外板を形成し、前記外板の加飾シート側にポリウレタンからなる硬質断熱材を発泡充填して本体外郭を形成したことを特徴とする冷蔵庫。   A laminated sheet in which a decorative sheet is bonded to one side of a transparent sheet made of a thermoplastic resin is thermoformed to form a box-like outer plate, and a hard heat insulating material made of polyurethane is foam-filled on the decorative sheet side of the outer plate. A refrigerator characterized by forming a main body outline. 透明シートと加飾シートとを加熱接着して形成した積層シートを真空あるいは圧空成形、若しくはプレス成形により箱状に形成したことを特徴とする請求項1記載の冷蔵庫。   The refrigerator according to claim 1, wherein a laminated sheet formed by heat-bonding a transparent sheet and a decorative sheet is formed into a box shape by vacuum, pressure forming, or press forming. フィルムシートに模様や色彩を印刷あるいは塗装した加飾シートの印刷あるいは塗装を施した層の発泡断熱材側に透光性の低い印刷層を設けたことを特徴とする請求項1記載の冷蔵庫。   2. The refrigerator according to claim 1, wherein a printed layer having low translucency is provided on the foamed heat insulating material side of a layer on which a decorative sheet obtained by printing or painting a pattern or color on a film sheet is applied or coated. 透明シートに加熱接着させた加飾された熱可塑性樹脂シートをポリオレフィン系樹脂で形成したことを特徴とする請求項1記載の冷蔵庫。   The refrigerator according to claim 1, wherein the decorated thermoplastic resin sheet heat-bonded to the transparent sheet is formed of a polyolefin resin. 加飾シートと透明シートとを接着するバインダー層は加熱硬化型樹脂からなることを特徴とする請求項1記載の冷蔵庫。   The refrigerator according to claim 1, wherein the binder layer for bonding the decorative sheet and the transparent sheet is made of a thermosetting resin. フィルムシートの上面に不透明層を設け、この不透明層の上面に加飾印刷を施し、次いで前記加飾印刷層の表面に透明のバインダーを塗布するとともに前記フィルムシートの下面側にバインダー層を設けて加飾シートを形成し、この加飾シートにおける前記透明バインダーの上面に透明の外面シートを圧着して積層シートを形成し、この積層シートを成形型に設置して所定形状に成形することで外板を得るとともに、この外板を室内側を形成する内板と結合し、その内部空間に硬質ウレタンフォーム断熱材発泡充填させることで断熱体を形成したことを特徴とする冷蔵庫。
An opaque layer is provided on the upper surface of the film sheet, decorative printing is performed on the upper surface of the opaque layer, a transparent binder is then applied to the surface of the decorative printing layer, and a binder layer is provided on the lower surface side of the film sheet. A decorative sheet is formed, a laminated sheet is formed by pressing a transparent outer sheet on the upper surface of the transparent binder in the decorative sheet, and the laminated sheet is placed in a mold and molded into a predetermined shape. A refrigerator characterized in that a heat insulator is formed by obtaining a plate, combining the outer plate with an inner plate forming the indoor side, and filling the internal space with a foamed hard urethane foam heat insulating material.
JP2005310515A 2005-10-25 2005-10-25 Refrigerator Pending JP2007120795A (en)

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PCT/JP2006/319861 WO2007049439A1 (en) 2005-10-25 2006-10-04 Refrigerator
TW095138240A TW200726950A (en) 2005-10-25 2006-10-17 Refrigerator

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JP2013250048A (en) * 2012-06-01 2013-12-12 Lg Electronics Inc Refrigerator door, method for manufacturing the same, decorative panel, and method and device for molding transparent synthetic resin-made panel
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KR20130135485A (en) * 2012-06-01 2013-12-11 엘지전자 주식회사 Door for a refrigerator and method for manufacturing the same, decoration panel, method and apparatus for processing a transparent synthetic resine panel
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