JPH04139286A - Production of hiding sheet - Google Patents
Production of hiding sheetInfo
- Publication number
- JPH04139286A JPH04139286A JP2261681A JP26168190A JPH04139286A JP H04139286 A JPH04139286 A JP H04139286A JP 2261681 A JP2261681 A JP 2261681A JP 26168190 A JP26168190 A JP 26168190A JP H04139286 A JPH04139286 A JP H04139286A
- Authority
- JP
- Japan
- Prior art keywords
- concealing
- film
- layer
- laminate
- manufacturing
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims abstract description 8
- 239000002985 plastic film Substances 0.000 claims abstract description 8
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 7
- 229920006255 plastic film Polymers 0.000 claims abstract description 4
- 229920000728 polyester Polymers 0.000 claims abstract description 3
- -1 polyethylene Polymers 0.000 claims description 15
- 239000004698 Polyethylene Substances 0.000 claims description 13
- 229920000573 polyethylene Polymers 0.000 claims description 13
- 238000003475 lamination Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 229910001111 Fine metal Inorganic materials 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000010030 laminating Methods 0.000 abstract 2
- 239000004033 plastic Substances 0.000 abstract 2
- 239000002650 laminated plastic Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 22
- 239000000123 paper Substances 0.000 description 19
- 229920006267 polyester film Polymers 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- FBOUIAKEJMZPQG-AWNIVKPZSA-N (1E)-1-(2,4-dichlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)pent-1-en-3-ol Chemical compound C1=NC=NN1/C(C(O)C(C)(C)C)=C/C1=CC=C(Cl)C=C1Cl FBOUIAKEJMZPQG-AWNIVKPZSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- 239000001055 blue pigment Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000011086 glassine Substances 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002335 surface treatment layer Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、隠蔽シートの製造方法に関し、特に秘密葉書
素材等に適用して、加工工程数が少なく、隠蔽性にもす
ぐれた素材を形成できる新規な製法に関するものである
。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for manufacturing a concealing sheet, and is particularly applicable to materials for secret postcards, etc., to form a material with a small number of processing steps and excellent concealment properties. This relates to a new manufacturing method that can be used.
（従来の技術）
近年、金融関係、流通関係、教育関係その他の個人或い
は法人の機密性を要する文書等の通信手段として２機密
性を有しかつ簡便迅速な処理が可能な、封書と葉書のそ
れぞれの長所を兼ね備えた通信手段として、情報の隠蔽
シートが普及しつつある。従来情報隠蔽用材料として、
非可逆的剥離性粘着紙を用いることは知られているが、
この情報隠蔽シートの構造は複雑で、６層程度の多層構
造を有するのが普通であり、その製造工程は、数工程に
及ぶものである。(Prior art) In recent years, enveloped letters and postcards, which have confidentiality and can be processed simply and quickly, have been used as communication means for financial, distribution, educational, and other documents that require confidentiality for individuals or corporations. Information concealment sheets are becoming popular as a means of communication that combines the advantages of each. Traditionally, as a material for concealing information,
It is known to use irreversibly removable adhesive paper, but
The structure of this information hiding sheet is complex, and usually has a multilayer structure of about six layers, and its manufacturing process involves several steps.
例えば、実開昭６３−６８７０号では、隠蔽シートの素
材の作成に、１）カバーシートの不透明化、２）熱可塑
性フィルムの加工、３）保護フィルムの加工、４）接着
剤加工の少なくとも４工程を要している。詳述すると
１）カバーシートの作成
上質紙にアルミ蒸着により不透明化処理を施す。For example, in Japanese Utility Model Application Publication No. 63-6870, in order to prepare the material for the concealing sheet, at least four steps are taken: 1) making the cover sheet opaque, 2) processing the thermoplastic film, 3) processing the protective film, and 4) processing the adhesive. It requires a process. In detail, 1) Creation of the cover sheet High-quality paper is made opaque by aluminum vapor deposition.
２）この上質紙の裏面に密度の比較的小さなポリエチレ
ンによる表面処理層をラミネート法により形成し、カバ
ーシートとする。2) A surface treatment layer made of relatively low-density polyethylene is formed on the back side of this high-quality paper by a lamination method to form a cover sheet.
３）密度の比較的大きな透明なポリエチレンフィルムと
上記カバーシートとの間にラミネト層と同種のポリエチ
レンよりなる熱可塑性樹脂を熱押出しして固化させ結合
層を形成する。この結合層は、同形の熱処理層とは強固
に結合し一体化しているが、透明な保護フィルムは疑似
接着のみを形成している。3) A thermoplastic resin made of the same type of polyethylene as the laminate layer is hot extruded and solidified to form a bonding layer between the relatively high density transparent polyethylene film and the cover sheet. This bonding layer is strongly bonded and integrated with the heat-treated layer of the same shape, but the transparent protective film forms only a pseudo-adhesion.
４）上記により得られたシール体に対して、感圧性接着
剤を施し、剥離紙を貼り合わせる。4) A pressure-sensitive adhesive is applied to the seal body obtained above, and a release paper is attached.
以上のように隠蔽シートの素材に対して、従来数工程を
要しており、隠蔽シートは相当高価なものにならざるを
得なかった。As described above, conventionally, several steps were required to prepare the material for the concealing sheet, and the concealing sheet had to be quite expensive.
（発明が解決しようとする課題）
本発明は、すぐれた隠蔽性を保持しつつ加工工程数の少
ない簡便な隠蔽シートの製造方法を提供しようとするも
のである。(Problems to be Solved by the Invention) The present invention aims to provide a simple method for manufacturing a concealing sheet that requires a small number of processing steps while maintaining excellent concealing properties.
（課題を解決するための手段）
本発明は、押出ラミネート法により、５２％以上の比率
透明度を持つ１紙とプラスチックフィルムとの積層体隠
蔽層を作り、これを感圧粘着加工することにより１個別
素材より出発して２工程で隠蔽性シート素材を形成する
。(Means for Solving the Problems) The present invention uses an extrusion lamination method to create a laminate hiding layer of paper and plastic film having a relative transparency of 52% or more, and processes this with a pressure-sensitive adhesive. A concealing sheet material is formed in two steps starting from individual materials.
また隠蔽性と選択剥離性を、プラス千ツク積層体で同時
に形成することにより、秘密葉書等に構成された際に容
易に選択剥離ができる使い易い素材を提供する。In addition, by simultaneously forming the concealing property and the selectively removable property with the plus-seal laminate, an easy-to-use material that can be easily selectively peeled off when configured into a secret postcard or the like is provided.
ここで述べる比率透明度とは以下の通り定義する。The ratio transparency described here is defined as follows.
一般に紙の隠蔽力もハンター不透明度で定義させると、
実用の米坪範囲内で
ハンター不透明度（％） ＝Ａｌｏｇ ＋。（米坪量）
の関係式で近位できる。In general, if the hiding power of paper is also defined by Hunter opacity,
Hunter opacity (%) within the practical tsubo range = Alog +. (Basic weight)
It can be approximated by the relational expression.
ここで、Ａは比率透明度であり１例えば上質紙の場合、
４１−４６の範囲にある。この値が大きいものは薄い（
軽い）紙でありながら同時に、不透明度が高いことを゛
意味し、＠蔽性にすぐれている。（表１参照）。Here, A is the ratio transparency, 1For example, in the case of high-quality paper,
In the range of 41-46. Items with large values are thin (
Although it is a light paper, it is also highly opaque, meaning it has excellent shielding properties. (See Table 1).
上質紙の場合の比率透明度、ハンター不透明度の一例を
次に挙げる。An example of the ratio transparency and hunter opacity for high-quality paper is given below.
表１
ΣＡ
Ａ ＝ ＝４４．５６ −・
・・−（２）ここで、Ａ：不透明度の平均、Ｎ：サンプ
ル数本発明は、上記隠蔽層の目標を、たとえば米坪６４
ｇ／ｍ”にて不透明度９５％以上とした。Table 1 ΣA A = =44.56 −・
...-(2) Here, A: average opacity, N: number of samples The present invention sets the target of the above-mentioned concealing layer to, for example, 64 sq. m.
The opacity was 95% or more in g/m''.
これに相当する比率透明度は１次式により５２．５とな
る。The corresponding ratio transparency is 52.5 according to the linear equation.
Ａｉ ≧
−５２，５・−（３）
ｌｏｇ、。６４
（作用）
隠蔽性と選択剥離性とを併せ持つ紙への加工は、所謂「
ポリマーサンドインチ」と言われる押出しラミネート方
式により実現される。Ai ≧ −52,5・−(3) log. 64 (Function) Processing into paper that has both hiding properties and selective release properties is the so-called "
This is achieved using an extrusion lamination method called "Polymer Sand Inch."
即ち紙とポリエステルフィルムの間に隠蔽性を持つポリ
エチレン層を押出機でフィルム状に熔融押出し、加圧冷
却して一体化することにより得られる。ここで隠蔽性を
持つポリエチレン層はアルミ等の金属微粉末又はカーボ
ンブラ・７りを混練するか、２軸押比機を用いて赤着色
フィルムと青着色フィルムを共押出しして赤青複層フィ
ルムを作ることにより達成される。赤・青複層フィルム
は、黒い保護層として作用する。That is, it is obtained by melt-extruding a polyethylene layer having concealing properties between paper and a polyester film into a film using an extruder, and then integrating the film by cooling under pressure. Here, the polyethylene layer with hiding properties is made by kneading fine metal powder such as aluminum or carbon bra 7, or by coextruding red colored film and blue colored film using a twin-screw extruder. This is achieved by making a film. The red/blue multilayer film acts as a black protective layer.
なお赤着色フィルム、青着色フィルムの代わりに金属微
粉末又はカーボンブラックを混練したポリエチレン自体
を用いて２軸押比機によるポリマーサンドインチ法によ
り１紙、ポリエステルフィルムとの積層体を形成しても
よい。Furthermore, instead of the red colored film or the blue colored film, a laminate with one paper and a polyester film may be formed using polyethylene itself kneaded with fine metal powder or carbon black by the polymer sandwich method using a twin-screw press ratio machine. good.
−力選択剥離性は、公知の異種ポリマー層相互間の親和
性を利用して行われる。即ち押出加工されたポリエチレ
ン層は紙とは強固に接着するが。- Force-selective peelability is achieved by utilizing the known affinity between different polymer layers. That is, the extruded polyethylene layer adheres strongly to the paper.
ポリエステルフィルムとの間の接着力は前者よりも小さ
いので、以後の葉書化する加工段階及び受取人に配達さ
れる段階では支障なく接合しているが１葉書を開披する
段階では１人手で剥離することができる。Since the adhesive force between the polyester film and the polyester film is smaller than the former, it is bonded without any problem during the subsequent processing stages of postcard processing and delivery to recipients, but when opening a single postcard, one person must peel it off. can do.
ここに述べる選択剥離性を実現するポリマーの組み合わ
せはポリエチレンとポリエステルに限定するものではな
く、ポリエチレン、エチレン酢酸ビニル共重合体、ポリ
塩化ビニル、ポリビニルアルコール、ポリ （メタ）ア
クリレートポリアミド９ポリプロピレン、ポリスチレン
等の高分子重合体のそれぞれから選ばれた２つの組み合
わせにより実現される。The combination of polymers that achieve the selective releasability described here is not limited to polyethylene and polyester, but includes polyethylene, ethylene vinyl acetate copolymer, polyvinyl chloride, polyvinyl alcohol, poly(meth)acrylate polyamide 9 polypropylene, polystyrene, etc. This is realized by a combination of two selected from each of the high molecular weight polymers.
第１図は本発明の隠蔽シートの製造工程の１実施例図で
あり、 （ａ）は第一の工程で製造されるシートを示し
ており２表面基材としての上質紙（１）と透明プラスチ
ックフィルム（２）との間に、透過する光の波長が充分
隔たった。好ましくは、はぼ補色関係（例えば赤と青）
の２層のポリエチレンフィルム層（３）、 （４）を
共押出し法により溶融押出しし、これを加圧冷却して、
積層形成する。FIG. 1 is a diagram showing one embodiment of the manufacturing process of the concealing sheet of the present invention, in which (a) shows the sheet manufactured in the first step, 2 high-quality paper (1) as the surface base material and transparent The wavelength of transmitted light was sufficiently separated from the plastic film (2). Preferably, complementary colors (e.g. red and blue)
The two polyethylene film layers (3) and (4) are melt-extruded by a coextrusion method, and this is cooled under pressure.
Laminated.
上ｆ紙（１）とフィルム（３）との間、フィルム（３）
とフィルム（４）との間は強固に接着し、透明プラスチ
ックフィルム（２）とフィルム（４）との間は擬似接着
状態で容易にシート（２）をフィルム（４）から剥離で
きるように、各材料を選択する。Between top f paper (1) and film (3), film (3)
and the film (4) are strongly adhered, and the transparent plastic film (2) and the film (4) are in a pseudo-adhesive state so that the sheet (2) can be easily peeled off from the film (4). Select each material.
次に第一の工程で作成した積層体隠蔽層（１）（３）、
（４）、 （２）の透明プラスチックフィルム（
２）側の表面に離型紙（５）を悪玉接着剤（６）により
重層して、隠蔽シート素材を形成する（第１図（ｂ））
。Next, the laminate hiding layers (1) (3) created in the first step,
(4), (2) transparent plastic film (
2) Layer release paper (5) on the side surface with bad adhesive (6) to form a concealing sheet material (Figure 1 (b))
.
〔実施例１〕
米坪量 ５２．０８７ｍ”、ハンター不透明度７６％の
上質紙にポリエチレン（スミ力セン Ｍｌ＝５．０）に
赤色顔料・・・カドミュウムレッド２２重量％を配合し
たもの及び青色顔料・・・ウルトラマリン１８重量％を
配合したものを二輪共押出機によりそれぞれ厚さ６μｍ
の複層サンドインチ層がポリエステルフィルム（東し、
ルミラー；厚さ６μｍ）との間に形成される如く押出加
工し、比率透明度５７の隠蔽層を得た。このものを更に
アクリル系エマルジョン感圧糊剤（厚さ１５μｍ）を塗
布し、グラシン紙タイプ離型紙と重層して上記２工程で
感圧接着型隠蔽シートを作成した。[Example 1] High-quality paper with a basis weight of 52.087 m'' and a Hunter opacity of 76%, mixed with polyethylene (Sumi Rikisen Ml=5.0) and red pigment...22% by weight of cadmium red. and blue pigment...mixed with 18% by weight of ultramarine, each to a thickness of 6 μm using a two-wheel co-extruder.
The multi-layer sandwich layer is made of polyester film (east,
A concealing layer with a transparency ratio of 57 was obtained by extrusion processing to form a masking layer between the transparent layer and the transparent layer (lumirror; thickness: 6 μm). This material was further coated with an acrylic emulsion pressure-sensitive adhesive (thickness: 15 μm) and layered with glassine paper type release paper to produce a pressure-sensitive adhesive concealing sheet using the above two steps.
このものは印刷加工して予め隠蔽されるべき情報がプリ
ントされた葉書に貼付けられたが、充分な強度で密着し
ており、郵便葉書としての取扱い適性は良好であった。This product was attached to a postcard on which information that should have been hidden in advance was printed, but it adhered with sufficient strength and was suitable for handling as a postcard.
また隠蔽部の端面より人により引剥しが可能であるが、
剥がされた後は人手では接着し得ないものである。In addition, it is possible to peel off the end surface of the concealing part by a person, but
Once removed, it cannot be glued back together manually.
（発明の効果）
以上から明らかなように０本発明により主として次の効
果が得られる。(Effects of the Invention) As is clear from the above, the present invention mainly provides the following effects.
１）製造工程が２工程に簡易化され、製造コストを大幅
に低減することができる。1) The manufacturing process is simplified to two steps, and manufacturing costs can be significantly reduced.
２）隠蔽性に優れたシートを提供することができ、また
薄いシートで充分な隠蔽性を確保することが可能である
。2) It is possible to provide a sheet with excellent hiding properties, and it is possible to ensure sufficient hiding properties with a thin sheet.
３）１ｇ！蔽性シート層の表面基材対する接着性および
透明プラスチック層に対する擬似接着性を任意に制御す
ることができる。3) 1g! The adhesion of the shielding sheet layer to the surface substrate and the pseudo-adhesion to the transparent plastic layer can be controlled as desired.
第１図は１本発明の情報隠蔽性シートの製造工程図であ
る。
（１）上紙、（２）透明ポリエステルフィルム（３）、
（４）ポリエチレンフィルム（５）剥離紙、（６）
悪圧接着剤層FIG. 1 is a manufacturing process diagram of an information hiding sheet according to the present invention. (1) Upper paper, (2) transparent polyester film (3),
(4) Polyethylene film (5) Release paper, (6)
bad pressure adhesive layer
Claims (7)
クフィルムとの選択剥離性積層体隠蔽層を作り、これを
感圧接着糊加工することを特徴とする隠蔽シート製造方
法。(1) A method for producing a concealing sheet, which comprises making a selectively releasable laminate concealing layer of a surface base material and a plastic film by an extrusion lamination method, and processing this with a pressure-sensitive adhesive.
することを特徴とする請求項（１）記載の隠蔽シート製
造方法。(2) The method for manufacturing a concealing sheet according to claim (1), wherein the laminate concealing layer has a relative opacity of about 52% or more.
との間にほぼ補色関係にある異なる色の２種の半透明高
分子重合体を押出ラミネート法によりフィルム状に溶融
押出して、積層形成されることを特徴とする請求項（１
）または（２）記載の隠蔽シート製造方法。(3) The laminate concealing layer is formed by melt-extruding two types of translucent polymers of different colors that are almost complementary between paper and transparent plastic film into a film form using an extrusion lamination method. Claim (1) characterized in that
) or the concealing sheet manufacturing method described in (2).
高分子重合体がポリエチレンであることを特徴とする請
求項（３）記載の隠蔽シート製造方法。(4) The method for manufacturing a concealing sheet according to claim (3), wherein the transparent plastic is polyester and the translucent polymer is polyethylene.
請求項（３）記載の隠蔽シート製造方法。(5) The method for manufacturing a concealing sheet according to claim (3), wherein the two complementary colors are red and blue.
との間に、金属微粉末またはカーボンブラックを混練し
たポリエチレンを押出ラミネート法によりフィルム状に
溶融押出して、積層形成されることを特徴とする請求項
（１）または（２）記載の隠蔽シート製造方法。(6) The laminate concealing layer is formed by melting and extruding polyethylene kneaded with fine metal powder or carbon black into a film between paper and a transparent plastic film using an extrusion lamination method. The method for manufacturing a concealing sheet according to claim (1) or (2).
により２層に形成されることを特徴とする請求項（６）
記載の隠蔽シート製造方法。(7) Claim (6) characterized in that the polyethylene film to be melt-extruded is formed into two layers by twin-screw extrusion.
The concealing sheet manufacturing method described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2261681A JPH04139286A (en) | 1990-09-28 | 1990-09-28 | Production of hiding sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2261681A JPH04139286A (en) | 1990-09-28 | 1990-09-28 | Production of hiding sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04139286A true JPH04139286A (en) | 1992-05-13 |
Family
ID=17365252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2261681A Pending JPH04139286A (en) | 1990-09-28 | 1990-09-28 | Production of hiding sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04139286A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH689487A5 (en) * | 1995-03-08 | 1999-05-14 | Tetra Pak Suisse Sa | Plastic sheet blocking visible light from product in packaging and containers |
| JP2007284551A (en) * | 2006-04-17 | 2007-11-01 | Nitto Denko Corp | Substrate for adhesive tape or sheet, adhesive tape or sheet having reflectivity and/or light screening property and liquid crystal display |
| CN103148664A (en) * | 2013-01-30 | 2013-06-12 | 合肥美的荣事达电冰箱有限公司 | Plastic product as well as preparation method and refrigeration equipment thereof |
| JP2014145010A (en) * | 2013-01-28 | 2014-08-14 | Osaka Sealing Printing Co Ltd | Pseudo-adhesive sheet |
-
1990
- 1990-09-28 JP JP2261681A patent/JPH04139286A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH689487A5 (en) * | 1995-03-08 | 1999-05-14 | Tetra Pak Suisse Sa | Plastic sheet blocking visible light from product in packaging and containers |
| JP2007284551A (en) * | 2006-04-17 | 2007-11-01 | Nitto Denko Corp | Substrate for adhesive tape or sheet, adhesive tape or sheet having reflectivity and/or light screening property and liquid crystal display |
| JP2014145010A (en) * | 2013-01-28 | 2014-08-14 | Osaka Sealing Printing Co Ltd | Pseudo-adhesive sheet |
| CN103148664A (en) * | 2013-01-30 | 2013-06-12 | 合肥美的荣事达电冰箱有限公司 | Plastic product as well as preparation method and refrigeration equipment thereof |
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