JPH0640188A - Laminated plastic card - Google Patents

Laminated plastic card

Info

Publication number
JPH0640188A
JPH0640188A JP4189247A JP18924792A JPH0640188A JP H0640188 A JPH0640188 A JP H0640188A JP 4189247 A JP4189247 A JP 4189247A JP 18924792 A JP18924792 A JP 18924792A JP H0640188 A JPH0640188 A JP H0640188A
Authority
JP
Japan
Prior art keywords
thickness
substrate
plastic card
thermoplastic resin
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4189247A
Other languages
Japanese (ja)
Other versions
JPH0822632B2 (en
Inventor
Shigekazu Takeda
重和 竹田
Hideyuki Takeda
秀之 竹田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FUJIPURA KK
Fujipla Inc
Original Assignee
FUJIPURA KK
Fujipla Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FUJIPURA KK, Fujipla Inc filed Critical FUJIPURA KK
Priority to JP4189247A priority Critical patent/JPH0822632B2/en
Priority to DE4314948A priority patent/DE4314948C2/en
Publication of JPH0640188A publication Critical patent/JPH0640188A/en
Publication of JPH0822632B2 publication Critical patent/JPH0822632B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/405Marking
    • B42D25/425Marking by deformation, e.g. embossing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/45Associating two or more layers
    • B42D25/455Associating two or more layers using heat
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/02Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the selection of materials, e.g. to avoid wear during transport through the machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/08Dimensions, e.g. volume
    • B32B2309/10Dimensions, e.g. volume linear, e.g. length, distance, width
    • B32B2309/105Thickness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2425/00Cards, e.g. identity cards, credit cards
    • B42D2033/30
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/324Reliefs

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)

Abstract

PURPOSE:To obtain an Improved marking card for easily distinctly forming surface uneven (emboss) patterns by composing, on a foundation plate, each layer of a plurality of plastic films with a laminated body being heat-welded with thermoplastic resin films inserted in respective layers, and between the lowermost layer and the foundation plate. CONSTITUTION:The marking card is made up of a laminated body wherein, on a foundation plate 3, two to five layers of plastic films 1 having a thickness of 10-40mum is heat-welded with thermoplastic resin films 2 having a thickness of 25-350mum being inserted in respective layers and the lowermost layer and the foundation plate 3. This card is heat-pressed between the heat pressing rollers 5, 6, and immediately after that, it is passed through rollers 7, 8 with surface uneven (emboss) patterns, so as to be given surface uneven (emboss) patterns. Consequently, a plastic card can be obtained which is improved to easily distinctly be formed with surface uneven (emboss) patterns.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、表面凹凸(エンボス)
模様を鮮明に形成しやすいようにする貼り合わせプラス
チックカードの改良に関する。
BACKGROUND OF THE INVENTION The present invention relates to surface irregularities (embossing).
The present invention relates to an improvement of a laminated plastic card that makes it easy to form a pattern clearly.

【0002】[0002]

【従来の技術】国民証・IDカード・パスポート・運転
免許証等に、従来から、貼り合わせプラスチックカード
が使用されていることは周知である。氏名等をはじめ所
要の事項を記載した記録紙と写真等との組み合わせの上
面または両面に、プラスチックフィルムを貼着したもの
である。
2. Description of the Related Art It is well known that laminated plastic cards have been conventionally used for national certificates, ID cards, passports, driver's licenses and the like. A plastic film is adhered to the upper surface or both surfaces of a combination of a recording paper on which necessary items such as name and the like are described and a photograph.

【0003】具体的には、氏名等をはじめ所要の事項を
記載した記録紙と写真等との組み合わせの上面または両
面に、厚さ150〜200μmのポリエチレンテレフタ
レート等のプラスチックフィルムを、厚さ10〜50μ
mの熱可塑性樹脂の膜をもって加熱融着したものであ
る。
More specifically, a plastic film such as polyethylene terephthalate having a thickness of 150 to 200 μm and a thickness of 10 to 10 μm is formed on the upper surface or both surfaces of a combination of a recording paper on which necessary items such as a name and the like are combined with a photograph. 50μ
The thermoplastic resin film of m is heated and fused.

【0004】このような証明書類は偽造の対象になりや
すいので、偽造を困難にする工夫が種々となされてい
る。
Since such certificates are easily subject to forgery, various measures have been taken to make forgery difficult.

【0005】[0005]

【発明が解決しようとする課題】上記のように証明書類
として利用された貼り合わせプラスチックカードの偽造
を困難にする手段として、表面凹凸(エンボス)模様を
付すと云う着想を得たが、従来技術に係る貼り合わせプ
ラスチックカードの表面に鮮明に表面凹凸(エンボス)
模様を付すことは困難であることが明らかになった。
As described above, the idea of attaching a surface embossed pattern as a means for making it difficult to forge a laminated plastic card used as a certificate has been proposed. Clear surface irregularities (emboss) on the surface of the laminated plastic card related to
It turned out that it was difficult to print.

【0006】本発明の目的はこの要請に応えることにあ
り、表面に鮮明に表面凹凸(エンボス)模様を付すこと
が可能な貼り合わせプラスチックカードを提供すること
にある。
An object of the present invention is to meet this demand, and it is an object of the present invention to provide a laminated plastic card which is capable of clearly forming a surface embossing pattern on its surface.

【0007】[0007]

【課題を解決するための手段】上記の目的は、基板上に
厚さ10μm以上40μm以下のプラスチックフィルム
の2乃至5層が、各層間及び最下層と前記の基板との間
に入れられた厚さ25μm以上350μm以下の熱可塑
性樹脂の膜をもって加熱融着されている積層体よりなる
貼り合わせプラスチックカードによって達成される。
Means for Solving the Problems The above-mentioned object is to provide a substrate in which 2 to 5 layers of a plastic film having a thickness of 10 μm or more and 40 μm or less are inserted between each substrate and between the bottom layer and the substrate. This is achieved by a laminated plastic card composed of a laminate which is heat-fused with a thermoplastic resin film having a thickness of 25 μm or more and 350 μm or less.

【0008】上記の構成において、厚さ10μm以上4
0μm以下のプラスチックフィルムの2〜5層が、相互
に背中合わせにして、熱可塑性樹脂をもって加熱融着さ
れていてもよい。この場合は、記録は、最上層と最下層
とを除く任意のプラスチックフィルムに書き込めばよ
い。
In the above structure, a thickness of 10 μm or more 4
Two to five layers of a plastic film having a thickness of 0 μm or less may be back-to-back with each other and heat-sealed with a thermoplastic resin. In this case, the recording may be written on any plastic film except the uppermost layer and the lowermost layer.

【0009】さらに、上記の構成において、厚さ10μ
m以上40μm以下のプラスチックフィルムの2〜5層
を相互に背中合わせに融着することゝし、その間に、記
録紙と写真との組み合わせを挟み込むようにしてもよ
い。
Further, in the above structure, the thickness is 10 μm.
It is also possible to fuse 2 to 5 layers of a plastic film of m or more and 40 μm or less back to back, and sandwich a recording paper and photograph combination therebetween.

【0010】[0010]

【作用】本発明は、本来すぐれて実験的な発明であり、
無数の実験を繰り返し、その結果にもとづいて完成した
ものであり、その作用は必ずしも明らかではないが、プ
ラスチック各層の厚さが10μm〜40μmと薄いこと
が表面凹凸(エンボス)模様を付するには好都合であ
る。そして、表面凹凸(エンボス)模様の成形は、加熱
融着の直後になされるので、加熱融着樹脂膜の厚さが2
5〜350μmと厚いことが好都合である。しかし、一
方、貼り合わせプラスチックカードの取り扱い上は、自
ずと適切な厚さがあるが、あまり厚くなると表面凹凸
(エンボス)模様を付するに不便である。これらの要素
が相互に関係して、プラスチックフィルムの層数は2〜
5層が最適層と云う結果が実験的に得られたものと思わ
れる。
The present invention is originally an excellent and experimental invention,
It was completed based on the results of countless experiments, and its function is not always clear. However, it is necessary to make the thickness of each plastic layer as thin as 10 μm to 40 μm in order to give the surface unevenness (emboss) pattern. It is convenient. Since the surface unevenness (embossing) pattern is formed immediately after the heat fusion, the thickness of the heat fusion resin film is 2
Conveniently, it is as thick as 5-350 μm. On the other hand, in terms of handling of the bonded plastic card, on the other hand, it has a proper thickness by itself, but if it is too thick, it is inconvenient to give a surface irregularity (emboss) pattern. The number of layers of plastic film is 2
It is considered that the result that the five layers are the optimum layers was obtained experimentally.

【0011】[0011]

【実施例】以下、図面を参照して、本発明の一実施例に
係る貼り合わせプラスチックカードについて説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A laminated plastic card according to an embodiment of the present invention will be described below with reference to the drawings.

【0012】図2参照 厚さ25μmのポリエチレンテレフタレートの薄膜1を
3枚用意し、各薄膜1間に、オレフィン系熱可塑性樹脂
2を、厚さ150μmに挟み、これを2組用意した。
Referring to FIG. 2, three thin films 1 of polyethylene terephthalate having a thickness of 25 μm were prepared, and an olefinic thermoplastic resin 2 was sandwiched between the thin films 1 to a thickness of 150 μm to prepare two sets.

【0013】図3参照 厚さ0.7mm程度の厚紙3の一部領域に写真4を添付
した。 図4参照 上記のポリエチレンテレフタレートの薄膜1とオレフィ
ン系熱可塑性樹脂2との積層体の間に厚紙3を挟み、加
熱圧着ローラ5・6間にて加熱圧着をなし、その直後
に、表面凹凸(エンボス)模様付けローラ7・8を通過
させて表面凹凸(エンボス)模様付けをなした。
Referring to FIG. 3, a photograph 4 is attached to a partial area of the cardboard 3 having a thickness of about 0.7 mm. See FIG. 4. The cardboard 3 is sandwiched between the laminate of the polyethylene terephthalate thin film 1 and the olefinic thermoplastic resin 2 described above, and thermocompression bonding is performed between the thermocompression bonding rollers 5 and 6, and immediately after that, the surface unevenness ( The embossed pattern-forming rollers 7 and 8 were passed to make surface irregularity (embossed) patterning.

【0014】図1参照 その結果、貼り合わせプラスチックカードの表面には高
さ約0.4mm幅約0.5mm程度の明瞭な表面凹凸
(エンボス)模様9が形成された。
As a result, a clear surface embossing pattern 9 having a height of about 0.4 mm and a width of about 0.5 mm was formed on the surface of the laminated plastic card.

【0015】[0015]

【発明の効果】以上説明したとおり、本発明に係る貼り
合わせプラスチックカードには、基板上に厚さ10μm
以上40μm以下のプラスチックフィルムの2乃至5層
が、各層間及び最下層と前記の基板との間に入れられた
厚さ25μm以上350μm以下の熱可塑性樹脂の膜を
もって加熱融着されている積層体よりなる貼り合わせプ
ラスチックカードであるので、表面凹凸(エンボス)模
様が明瞭に形成できる。
As described above, the laminated plastic card according to the present invention has a thickness of 10 μm on the substrate.
A laminate in which 2 to 5 layers of a plastic film having a thickness of 40 μm or less are heat-fused with a film of a thermoplastic resin having a thickness of 25 μm or more and 350 μm or less that is inserted between each layer and the bottom layer and the substrate. Since it is a laminated plastic card consisting of, the surface unevenness (embossing) pattern can be clearly formed.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例に係る貼り合わせプラスチッ
クカードの平面図である。
FIG. 1 is a plan view of a laminated plastic card according to an embodiment of the present invention.

【図2】本発明の一実施例に係る貼り合わせプラスチッ
クカードの製造工程図である。
FIG. 2 is a manufacturing process diagram of a laminated plastic card according to an embodiment of the present invention.

【図3】本発明の一実施例に係る貼り合わせプラスチッ
クカードの製造工程図である。
FIG. 3 is a manufacturing process diagram of a laminated plastic card according to an embodiment of the present invention.

【図4】本発明の一実施例に係る貼り合わせプラスチッ
クカードの製造工程図である。
FIG. 4 is a manufacturing process diagram of a laminated plastic card according to an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 ポリエチレンテレフタレートの薄膜 2 オレフィン系熱可塑性樹脂 3 厚紙 4 写真 5・6 加熱圧着ローラ 7・8 表面凹凸模様付けローラ 9 表面凹凸模様 1 Polyethylene terephthalate thin film 2 Olefinic thermoplastic resin 3 Thick paper 4 Photo 5.6 Thermocompression bonding roller 7.8 Surface uneven patterning roller 9 Surface uneven pattern

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 基板上に、厚さ10μm以上40μm以
下のプラスチックフィルムの2乃至5層が、各層間及び
最下層と前記基板との間に入れられた厚さ25μm以上
350μm以下の熱可塑性樹脂の膜をもって加熱融着さ
れてなる積層体よりなることを特徴とする貼り合わせプ
ラスチックカード。
1. A thermoplastic resin having a thickness of 25 μm or more and 350 μm or less, in which two to five layers of a plastic film having a thickness of 10 μm or more and 40 μm or less are placed on each substrate and between each substrate and the bottom layer and the substrate. A laminated plastic card comprising a laminated body obtained by heating and fusing the film of FIG.
【請求項2】 前記基板は、厚さ10μm以上40μm
以下のプラスチックフィルムの2乃至5層が、各層間及
び上層積層体最下層との間に入れられた厚さ25μm以
上350μm以下の熱可塑性樹脂の膜をもって加熱融着
されてなる積層体であることを特徴とする請求項1記載
の貼り合わせプラスチックカード。
2. The substrate has a thickness of 10 μm or more and 40 μm or more.
2 to 5 layers of the following plastic film are laminated by heating and fusion with a thermoplastic resin film having a thickness of 25 μm or more and 350 μm or less inserted between each layer and the lowermost layer of the upper layer laminate The laminated plastic card according to claim 1, wherein:
【請求項3】 前記基板は記録・写真混合板状体であ
り、該基板の下面に、厚さ10μm以上40μm以下の
プラスチックフィルムの2乃至5層が、各層間及び最上
層と前記基板との間に入れられた厚さ25μm以上35
0μm以下の熱可塑性樹脂の膜をもって加熱融着されて
なる積層体が加熱融着されてなることを特徴とする請求
項1記載の貼り合わせプラスチックカード。
3. The substrate is a recording / photographic mixed plate-like body, and 2 to 5 layers of a plastic film having a thickness of 10 μm or more and 40 μm or less are provided on the lower surface of the substrate and each layer and the uppermost layer and the substrate. Thickness of 25μm or more put between 35
2. The laminated plastic card according to claim 1, wherein a laminate formed by heating and fusing a thermoplastic resin film having a thickness of 0 μm or less is formed by heating and fusing.
JP4189247A 1992-07-16 1992-07-16 Laminated plastic card Expired - Fee Related JPH0822632B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP4189247A JPH0822632B2 (en) 1992-07-16 1992-07-16 Laminated plastic card
DE4314948A DE4314948C2 (en) 1992-07-16 1993-05-06 Material for a laminated plastic card and laminated plastic card

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4189247A JPH0822632B2 (en) 1992-07-16 1992-07-16 Laminated plastic card

Publications (2)

Publication Number Publication Date
JPH0640188A true JPH0640188A (en) 1994-02-15
JPH0822632B2 JPH0822632B2 (en) 1996-03-06

Family

ID=16238095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4189247A Expired - Fee Related JPH0822632B2 (en) 1992-07-16 1992-07-16 Laminated plastic card

Country Status (2)

Country Link
JP (1) JPH0822632B2 (en)
DE (1) DE4314948C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5474828A (en) * 1988-11-12 1995-12-12 Kureha Kagaku Kogyo K.K. Electronic device sealing resin compositions and sealed electronic devices
JPH0858274A (en) * 1994-08-25 1996-03-05 Toppan Printing Co Ltd Information carrying sheet
JP2012022381A (en) * 2010-07-12 2012-02-02 Nhk Spring Co Ltd Identification medium, data reading method, identification apparatus, and manufacturing method of identification medium

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5988510A (en) * 1997-02-13 1999-11-23 Micron Communications, Inc. Tamper resistant smart card and method of protecting data in a smart card
DE10013410B4 (en) * 2000-03-17 2011-05-05 Ovd Kinegram Ag Laminate, in particular in the form of cards, and process for its production
JP2007219575A (en) 2006-02-14 2007-08-30 Checkpoint Manufacturing Japan Kk Resonance tag

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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JPS6387290A (en) * 1986-09-30 1988-04-18 株式会社東芝 Portable medium
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JPS6387290A (en) * 1986-09-30 1988-04-18 株式会社東芝 Portable medium
JPH0381198A (en) * 1989-08-24 1991-04-05 Taisei Houzai Kk Film laminated structure and preparation thereof
JP3087281U (en) * 2002-01-15 2002-07-26 ブロンドール株式会社 Product package that can store hanging pieces inside

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Also Published As

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JPH0822632B2 (en) 1996-03-06
DE4314948A1 (en) 1994-01-20
DE4314948C2 (en) 2000-05-18

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