JPH0241139Y2 - - Google Patents
Info
- Publication number
- JPH0241139Y2 JPH0241139Y2 JP1985044950U JP4495085U JPH0241139Y2 JP H0241139 Y2 JPH0241139 Y2 JP H0241139Y2 JP 1985044950 U JP1985044950 U JP 1985044950U JP 4495085 U JP4495085 U JP 4495085U JP H0241139 Y2 JPH0241139 Y2 JP H0241139Y2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- adhesive
- adhesive sheet
- basis weight
- release
- 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.)
- Expired
Links
- 239000000853 adhesive Substances 0.000 claims description 46
- 230000001070 adhesive effect Effects 0.000 claims description 46
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 239000010410 layer Substances 0.000 claims description 16
- 238000007654 immersion Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims 2
- 239000000123 paper Substances 0.000 description 38
- 239000000463 material Substances 0.000 description 16
- 238000010521 absorption reaction Methods 0.000 description 7
- 229920001296 polysiloxane Polymers 0.000 description 6
- 239000000945 filler Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000012784 inorganic fiber Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は剥離紙を有する感圧接着シート、感熱
接着シート若しくは半硬化接着シートに関するも
のである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pressure-sensitive adhesive sheet, a heat-sensitive adhesive sheet or a semi-cured adhesive sheet having a release paper.
従来、剥離紙を具備している接着シートには第
１図や第２図に示した様な構成のものが知られて
いる。
BACKGROUND ART Conventionally, adhesive sheets having a release paper having a structure as shown in FIGS. 1 and 2 are known.
第１図は表面基材を有する接着シートの断面構
成図であり、第２図は表面基材を有しない接着シ
ートの断面構成図である。 FIG. 1 is a sectional view of an adhesive sheet having a surface base material, and FIG. 2 is a sectional view of an adhesive sheet without a surface base material.
図中１は接着剤、２は表面基材、３は接着シー
ト本体、４は剥離紙基材、５は目止剤、６は剥離
剤、７は剥離紙を示す。 In the figure, 1 is an adhesive, 2 is a surface base material, 3 is an adhesive sheet main body, 4 is a release paper base material, 5 is a filler, 6 is a release agent, and 7 is a release paper.
処で従来の上記した接着シートでは接着シート
が高湿度下に放置された場合に吸湿により剥離紙
が幅（ヨコ）方向に伸びて了い、第３図若しくは
第４図の如く大きなカールを起こして了う。この
カールは接着シートの機能を損なうし、更に取扱
いの上でも大きな問題となつている。 However, in the conventional adhesive sheet described above, when the adhesive sheet is left under high humidity, the release paper stretches in the width (horizontal) direction due to moisture absorption, causing large curls as shown in Figures 3 and 4. It ends. This curl impairs the functionality of the adhesive sheet and also poses a major problem in handling.
本考案者等は上述した従来の接着シートの問題
点である吸湿カールを改良すべく種々の検討を行
なつた。
The inventors of the present invention have conducted various studies in order to improve the moisture absorption curl, which is a problem with the conventional adhesive sheets mentioned above.
その結果、上述の問題点を解消し得る接着シー
トを考案するに至つた。 As a result, we have devised an adhesive sheet that can solve the above-mentioned problems.
即ち接着剤層／剥離層／目止層／紙Ａ／貼合
剤／紙Ｂ／目止層／剥離層の順に配設され、且つ
紙ABの坪量およびヨコ方向の浸水伸度が次の条
件を具備している事を特徴とする接着シートであ
る。 That is, the adhesive layer/release layer/filling layer/paper A/laminating agent/paper B/filling layer/release layer are arranged in this order, and the basis weight and water immersion elongation in the horizontal direction of paper AB are as follows. This adhesive sheet is characterized by meeting certain conditions.
条件ａ： 紙Ａ、紙Ｂ両者の坪量が同等で、ヨコ
方向の浸水伸度がＡよりＢの方が小さいこと、
条件ｂ： 紙Ａ、紙Ｂ両者のヨコ方向の浸水伸度
が同等で、坪量がＡよりＢの方が小さいこと、
条件ｃ： 紙Ａに比べ紙Ｂがヨコ方向の浸水伸
度、坪量共に小さいこと、
更に詳述すると接着剤層を具備した接着シート
本体の接着剤層若しくは接着剤層のみの場合の接
着剤層と、前記接着剤層に剥離が容易な程度に接
合された剥離紙とから成る接着シートにおいて、
剥離紙を異なるヨコ方向の浸水伸度および／また
は異なる坪量の２枚の紙Ａ，Ｂを貼合剤を介して
一体化した基材と該基材の両面に設けられた目止
層および剥離層から構成された接着シートであ
る。Condition a: The basis weight of both paper A and paper B is the same, and the water immersion elongation in the horizontal direction is smaller for B than A. Condition b: The water immersion elongation in the horizontal direction for both paper A and paper B is the same. Then, the basis weight of B is smaller than that of A. Condition c: Compared to paper A, paper B has a smaller water immersion elongation in the horizontal direction and basis weight. More specifically, the adhesive sheet body has an adhesive layer. An adhesive sheet consisting of an adhesive layer or an adhesive layer in the case of only an adhesive layer, and a release paper bonded to the adhesive layer to such an extent that it can be easily peeled off,
A base material in which release paper is integrated with two sheets of paper A and B having different water immersion elongations in the horizontal direction and/or different basis weights via a laminating agent, and a sealing layer provided on both sides of the base material. This is an adhesive sheet composed of a release layer.
以下に本考案を図面を用いて更に詳細に説明す
る。 The present invention will be explained in more detail below using the drawings.
接着剤１としては、感圧接着剤、感熱接着剤、
半硬化接着剤、例えばエポキシプリプレグなどが
使用できる。また接着剤は繊維やその他の充填物
を含んでいてもよい。 As the adhesive 1, pressure-sensitive adhesive, heat-sensitive adhesive,
A semi-cured adhesive such as epoxy prepreg can be used. The adhesive may also contain fibers or other fillers.
表面基材２としては、高分子フイルム、無機繊
維シート、金属箔、布、紙などの単体若しくは複
合系が使用出来る。 As the surface base material 2, single or composite systems such as polymer film, inorganic fiber sheet, metal foil, cloth, and paper can be used.
目止剤５としては従来よく知られているデンプ
ン、ポリビニルアルコール、カルボキシメチルセ
ルロース、クレー・バインダーなどの単独系若し
くは混合系が使用出来る。 As the filler 5, conventionally well-known starch, polyvinyl alcohol, carboxymethyl cellulose, clay binder, and the like can be used alone or in combination.
剥離剤６としては従来より剥離剤として知られ
ているシリコーン、シリコーン／ポリビニルアル
コール混合物、シリコーン・セルロース誘導体混
合物、シリコーン・ポリエステル共重合体、シリ
コーン・アクリル共重合体、長鎖アルキル基含有
アルキドなどが使用出来る。 As the release agent 6, silicones, silicone/polyvinyl alcohol mixtures, silicone/cellulose derivative mixtures, silicone/polyester copolymers, silicone/acrylic copolymers, long-chain alkyl group-containing alkyds, etc., which are conventionally known as release agents, are used. Can be used.
貼合剤８としては、種々の高分子物質が使用出
来るが、エポキシ接着剤、イソシアネート接着
剤、アクリル系接着剤、ポリエチレン、ポリプロ
ピレン、酢酸ビニル系接着剤、デンプン、ポリエ
ステル、４−メチルペンテン−１ポリマーが代表
的である。 Various polymeric substances can be used as the adhesive 8, including epoxy adhesive, isocyanate adhesive, acrylic adhesive, polyethylene, polypropylene, vinyl acetate adhesive, starch, polyester, and 4-methylpentene-1. Polymers are typical.
剥離紙基材の紙９，１０としては通常使われて
いる紙および無機繊維や合成樹脂を含有する紙な
どが挙げられるが、特に浸水伸度が2.5％以下望
ましくは2.0％以下のものが吸湿安定性の点で優
れている。 Papers 9 and 10 for the release paper base include commonly used papers and papers containing inorganic fibers and synthetic resins, but those with a water immersion elongation of 2.5% or less, preferably 2.0% or less, are moisture-absorbing. Excellent in terms of stability.
なお上述構成単位層の厚みは用途に応じて適宜
選択出来るが、代表的には次の如くになる。 Note that the thickness of the above-mentioned structural unit layer can be appropriately selected depending on the application, but is typically as follows.
接着剤層１は10μ以上望ましくは20〜40μ
表面基材２は10μ以上望ましくは20μ〜１ｍ／
ｍ
目止剤５は2μ以上望ましくは５〜10μ
剥離剤６は0.05μ以上望ましくは0.1〜3μ
貼合剤８は3μ以上望ましくは10〜60μ
紙９，１０の坪量は10〜300ｇ／m2のものが使
用出来るが望ましくは20〜150ｇ／m2がよい。 The adhesive layer 1 has a thickness of 10μ or more, preferably 20 to 40μ, and the surface base material 2 has a thickness of 10μ or more, preferably 20μ to 1m/
m Blocking agent 5 is 2μ or more, preferably 5 to 10μ Release agent 6 is 0.05μ or more, preferably 0.1 to 3μ Pasting agent 8 is 3μ or more, preferably 10 to 60μ Papers 9 and 10 have a basis weight of 10 to 300 g/m 2 can be used, but preferably 20 to 150 g/m 2 .
なお本考案の接着シートにおける目止剤および
剥離剤は表裏同じであつても異なつていてもよ
い。 Note that the filler and release agent in the adhesive sheet of the present invention may be the same or different on the front and back sides.
本考案における浸水伸度の測定はJ.TAPPI紙
パルプ試験方法NO.27−78A法に準じた。なお浸
水時間は60分とした。 The measurement of water immersion elongation in this invention was based on J.TAPPI paper pulp test method No. 27-78A method. The immersion time was 60 minutes.
坪量の測定はJIS P8124に準じて行なつた。 The basis weight was measured in accordance with JIS P8124.
第５図および第６図は本考案の代表的な接着シ
ートの断面構成図である。 FIGS. 5 and 6 are cross-sectional configuration diagrams of typical adhesive sheets of the present invention.
図中１は接着剤、２は表面基材、３は接着シー
ト本体、５は目止剤、６は剥離剤、８は貼合剤、
９は紙Ａ、１０は紙Ｂである。 In the figure, 1 is an adhesive, 2 is a surface base material, 3 is an adhesive sheet body, 5 is a filler, 6 is a release agent, 8 is a laminating agent,
9 is paper A, and 10 is paper B.
本考案で必須としている何れか一つの条件を満
足する時に始めて良好な吸湿安定性が、紙Ａ，Ｂ
および接着シート本体或いは接着剤との吸湿変化
のバランスによつて発現されるのである。なお接
着シートにおいて紙Ａと紙Ｂとの位置が逆になる
と、例えば接着シート本体／剥離層／目止層／紙
Ｂ／貼合剤／紙Ａ／目止層／剥離層の如き構造に
なると、良好な吸湿安定性は得られない。 Good moisture absorption stability is achieved only when one of the conditions essential to this invention is satisfied.
This is expressed by the balance of moisture absorption changes with the adhesive sheet itself or the adhesive. In addition, if the positions of paper A and paper B are reversed in the adhesive sheet, for example, the structure becomes adhesive sheet main body / release layer / sealing layer / paper B / pasting agent / paper A / sealing layer / release layer. , good moisture absorption stability cannot be obtained.
紙Ａ、紙Ｂの接着シートにおける配設位置は極
めて重要である。 The placement positions of paper A and paper B on the adhesive sheet are extremely important.
即ち、本考案の接着シートと従来の接着シート
との異なる点は接着シートにおける剥離紙の基材
の紙を貼合剤を介して特定限定した浸水伸度と坪
量との関係を有する２層の紙から構成している点
である。この様な新規な構造を採ることによつて
従来問題となつていた吸湿カールが解消されるの
である。 In other words, the difference between the adhesive sheet of the present invention and conventional adhesive sheets is that the base paper of the release paper in the adhesive sheet has two layers having a specific and limited relationship between water immersion elongation and basis weight through a laminating agent. The point is that it is constructed from paper. By adopting such a new structure, the moisture absorption curl that has been a problem in the past can be solved.
次に実施例により本考案を更に詳しく説明す
る。
Next, the present invention will be explained in more detail with reference to Examples.
実施例 １
表面基材ガラスクロス50μ／接着剤繊維含有エ
ポキシプリプレグ150μ／剥離剤シリコーン／目
止剤ポリビニルアルコール／紙Ａヨコ方向の浸水
伸度1.0％坪量70ｇ／m2の紙／貼合剤ポリプロピ
レン40μ／紙Ｂヨコ方向の浸水伸度1.0％坪量35
ｇ／m2の紙／目止剤ポリビニルアルコール／剥離
剤シリコーンの構成を有する接着シートを作成し
20℃，40％RHから20℃，85％RHの環境下へ
48hr放置した時の吸湿カール状態を調べた。その
結果、吸湿カールは殆んど無く良好であつた。Example 1 Surface base material glass cloth 50 μ / Adhesive fiber-containing epoxy prepreg 150 μ / Release agent silicone / Sealing agent polyvinyl alcohol / Paper A with horizontal water immersion elongation of 1.0%, basis weight 70 g/m 2 / Laminating agent Polypropylene 40μ/Paper B Horizontal water immersion elongation 1.0% Basis weight 35
An adhesive sheet with a composition of g/m 2 paper/polyvinyl alcohol sealant/silicone release agent was prepared.
From 20℃, 40%RH to 20℃, 85%RH environment
The state of moisture-absorbing curls was examined after being left for 48 hours. The results were good, with almost no moisture-absorbing curls.
実施例 ２
実施例１の紙のみを次の様に変えて接着シート
を作成し、実施例１と同じ方法で吸湿カールを調
べた。Example 2 An adhesive sheet was prepared by changing only the paper of Example 1 as follows, and moisture absorption curl was examined in the same manner as in Example 1.
紙Ａ： 坪量35ｇ／m2ヨコ方向の浸水伸度2.0％
の紙
紙Ｂ： 坪量35ｇ／m2ヨコ方向浸水伸度1.0％の
紙
その結果、吸湿安定性は良好であつた。Paper A: Basis weight 35g/m 2 Water immersion elongation in horizontal direction 2.0%
Paper B: Paper with a basis weight of 35 g/ m2 and a water immersion elongation in the horizontal direction of 1.0%.As a result, the moisture absorption stability was good.
実施例 ３
実施例１の紙のみを次の様に変えて接着シート
を作成し、実施例１と同じ方法で吸湿カールを調
べた。Example 3 An adhesive sheet was prepared by using only the paper of Example 1 with the following changes, and moisture absorption curl was examined in the same manner as in Example 1.
紙Ａ： 坪量50ｇ／m2ヨコ方向の浸水伸度1.5％
の紙
紙Ｂ： 坪量35ｇ／m2ヨコ方向の浸水伸度1.0％
の紙
その結果、吸湿安定性は良好であつた。Paper A: Basis weight 50g/m 2 Water immersion elongation in horizontal direction 1.5%
Paper B: Basis weight 35g/m 2Water immersion elongation in horizontal direction 1.0%
As a result, the moisture absorption stability was good.
比較例
表面基材ガラスクロス50μ／接着剤繊維含有エ
ポキシプリプレグ150μ／剥離剤シリコーン／目
止剤ポリビニルアルコール／紙（坪量70ｇ／m2ヨ
コ方向の浸水伸度1.5％）／目止剤ポリビニルア
ルコール／剥離剤シリコーンの構成を有する接着
シートを作成し、実施例１と同じ方法で吸湿カー
ルを調べた。その結果、吸湿カールが大きく吸湿
安定性は悪かつた。Comparative example Surface base material glass cloth 50 μ / Adhesive fiber-containing epoxy prepreg 150 μ / Release agent silicone / Sealing agent polyvinyl alcohol / Paper (basis weight 70 g / m 2 Water immersion elongation in the horizontal direction 1.5%) / Sealing agent polyvinyl alcohol An adhesive sheet having a composition of /release agent silicone was prepared, and moisture absorption curl was examined in the same manner as in Example 1. As a result, moisture absorption curl was large and moisture absorption stability was poor.
第１図は表面基材を有する従来の接着シートの
断面構成図、第２図は同じく表面基材の無い場
合、第３図は第１図のシートが吸湿しカールした
状態を示し、第４図は同じく第２図のシートの場
合を示す。第５図および第６図は本考案の代表的
な接着シートの断面構成図である。第５図は表面
基材を有する接着シートの断面構成図であり、第
６図は表面基材が無い接着シートの断面構成図で
ある。
図中、１……接着剤、２……表面基材、３……
接着シート本体、４……剥離紙基材、５……目止
剤、６……剥離剤、７……剥離紙、８……貼合
剤、９……紙Ａ、１０……紙Ｂ。
Figure 1 is a cross-sectional diagram of a conventional adhesive sheet having a surface base material, Figure 2 is a diagram showing the sheet without a surface base material, Figure 3 is a state in which the sheet in Figure 1 has absorbed moisture and curled, and The figure also shows the case of the sheet shown in FIG. FIGS. 5 and 6 are cross-sectional configuration diagrams of typical adhesive sheets of the present invention. FIG. 5 is a sectional view of an adhesive sheet having a surface base material, and FIG. 6 is a sectional view of an adhesive sheet without a surface base material. In the figure, 1... adhesive, 2... surface base material, 3...
Adhesive sheet body, 4... Release paper base material, 5... Sealing agent, 6... Release agent, 7... Release paper, 8... Laminating agent, 9... Paper A, 10... Paper B.
Claims (1)
において、 接着剤層／剥離層／目止層／紙Ａ／貼合剤／紙
Ｂ／目止層／剥離層 の順に配設され、且つ紙Ａ，Ｂの坪量およびヨコ
方向の浸水伸度が次の条件を具備している 条件ａ： 紙Ａ、紙Ｂ両者の坪量が同等で、ヨコ
方向の浸水伸度がＡよりＢの方が小さいこと、 条件ｂ： 紙Ａ、紙Ｂ両者のヨコ方向の浸水伸度
が同等で、坪量がＡよりＢの方が小さいこと、 条件ｃ： 紙Ａに比べ紙Ｂがヨコ方向の浸水伸
度、坪量共に小さいこと、 事を特徴とする接着シート。[Claims for Utility Model Registration] In an adhesive sheet consisting of an adhesive layer and a release paper bonded to each other, the adhesive layer/release layer/blocking layer/paper A/laminating agent/paper B/blocking layer/release layer Condition a: Papers A and B are arranged in this order, and the basis weight and water immersion elongation in the horizontal direction meet the following conditions: Paper A and B have the same basis weight, and the water immersion in the horizontal direction is the same. The elongation of paper B is smaller than that of A. Condition b: The water immersion elongation of both paper A and paper B in the horizontal direction is the same, and the basis weight of paper B is smaller than that of A. Condition c: For paper A In comparison, an adhesive sheet is characterized in that Paper B has a lower water immersion elongation in the horizontal direction and a lower basis weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985044950U JPH0241139Y2 (en) | 1985-03-29 | 1985-03-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985044950U JPH0241139Y2 (en) | 1985-03-29 | 1985-03-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61164238U JPS61164238U (en) | 1986-10-11 |
| JPH0241139Y2 true JPH0241139Y2 (en) | 1990-11-01 |
Family
ID=30558000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985044950U Expired JPH0241139Y2 (en) | 1985-03-29 | 1985-03-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241139Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4480814B2 (en) * | 1999-07-29 | 2010-06-16 | 日東電工株式会社 | Adhesive sheets |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4816059B1 (en) * | 1970-04-03 | 1973-05-19 | Japan Synthetic Rubber Co Ltd | |
| JPS5130860B2 (en) * | 1971-11-29 | 1976-09-03 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4816059U (en) * | 1971-05-27 | 1973-02-23 | ||
| JPS548121Y2 (en) * | 1974-08-28 | 1979-04-14 | ||
| JPS5245763U (en) * | 1975-09-27 | 1977-03-31 | ||
| JPS59141546U (en) * | 1983-03-11 | 1984-09-21 | 山陽国策パルプ株式会社 | release paper |
-
1985
- 1985-03-29 JP JP1985044950U patent/JPH0241139Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4816059B1 (en) * | 1970-04-03 | 1973-05-19 | Japan Synthetic Rubber Co Ltd | |
| JPS5130860B2 (en) * | 1971-11-29 | 1976-09-03 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61164238U (en) | 1986-10-11 |
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