JPH079642A - Surface protective film - Google Patents
Surface protective filmInfo
- Publication number
- JPH079642A JPH079642A JP15523693A JP15523693A JPH079642A JP H079642 A JPH079642 A JP H079642A JP 15523693 A JP15523693 A JP 15523693A JP 15523693 A JP15523693 A JP 15523693A JP H079642 A JPH079642 A JP H079642A
- Authority
- JP
- Japan
- Prior art keywords
- film
- filler
- base material
- surface protective
- protective film
- 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
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、合成樹脂板、化粧合
板、金属板等の被着体の表面に仮着し、塵の付着や傷付
き等がないように、その表面を保護するのに使用する表
面保護フイルムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention protects the surface of an adherend such as a synthetic resin plate, a decorative plywood, a metal plate, etc. temporarily so as to prevent dust from adhering or scratching. The present invention relates to a surface protection film used for.
【０００２】[0002]
【従来の技術】従来より、この種の表面保護フイルムと
しては、ポリエチレン、ポリプロピレン等のポリオレフ
ィン系樹脂等の熱可塑性樹脂のみからなる基材フイルム
と、基材フイルムの片面に形成された粘着層とよりなる
ものが知られている。2. Description of the Related Art Conventionally, as a surface protective film of this type, a base film made of only a thermoplastic resin such as a polyolefin resin such as polyethylene or polypropylene, and an adhesive layer formed on one side of the base film. It is known that
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
表面保護フイルムは、縦方向（巻き長さ方向）に延伸さ
れながら成形されるため、横方向（巻き長さ方向と垂直
方向）の引裂き強度が強く、５０ｍｍ幅程度のフイルム
を手貼り又は機械貼りの用途に使用し、巻き長１００ｍ
のフイルムを長さ１ｍの被着体に貼付け、フイルムを１
ｍ毎に手で切る作業において、フイルムの手切れ性が悪
いので無駄な手間を要し、且つ貼付けた後の外観も悪い
という問題がある。However, since the conventional surface protective film is formed while being stretched in the longitudinal direction (winding length direction), the tear strength in the transverse direction (winding length direction and vertical direction) is high. A strong film with a width of about 50 mm is used for manual or machine application, and the winding length is 100 m.
Affix the film to the adherend with a length of 1 m, and
In the work of cutting by hand every m, there is a problem that the film is poor in hand-cutting property, so that unnecessary work is required and the appearance after pasting is also bad.
【０００４】本発明は、上記従来の問題点を解消し、フ
イルムの横方向に手で容易に切れて作業性のよい表面保
護フイルムを提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above conventional problems and to provide a surface protective film which can be easily cut in the lateral direction of the film by hand and has good workability.
【０００５】[0005]
【課題を解決するための手段】本発明表面保護フイルム
は、熱可塑性樹脂からなる基材フイルムと基材フイルム
の片面に形成された粘着層とよりなる表面保護フイルム
において、基材フイルムが密度０．９２０〜０．９３５
ｇ／ｃｍ3 であるポリオレフィン系樹脂１００重量部に
対してフィラー５０〜７０重量部を含有せしめた配合物
で形成され、且つ基材の厚さが３０〜５０μｍであるこ
とを特徴とするものである。The surface protective film of the present invention is a surface protective film comprising a base film made of a thermoplastic resin and an adhesive layer formed on one side of the base film, wherein the base film has a density of 0. .920-0.935
It is characterized in that it is formed of a composition in which 50 to 70 parts by weight of a filler is added to 100 parts by weight of a polyolefin resin of g / cm 3 , and the thickness of the base material is 30 to 50 μm. is there.
【０００６】本発で使用できる基材フイルムのポリオレ
フィン系樹脂の密度は０．９２０〜０．９３５ｇ／ｃｍ
3 である。密度が０．９２０ｇ／ｃｍ3 未満の場合には
強度不足で伸び易く、貼付作業性が悪くなり、０．９３
５ｇ／ｃｍ3 を超えると強度が高すぎてて切れ性が悪く
なる。The density of the polyolefin resin of the base film which can be used in the present invention is 0.920 to 0.935 g / cm.
Is 3 . When the density is less than 0.920 g / cm 3 , the strength is insufficient and the composition is easily stretched, and the workability of application becomes poor.
When it exceeds 5 g / cm 3 , the strength is too high and the cutting property is deteriorated.
【０００７】フィラーとしては、例えばＣａＣＯ3 、タ
ルク、ＭｇＯ、Ａｌ（ＯＨ）3 等が用いられる。フィラ
ーの粒径は０．１〜１０μｍであることが好ましい。粒
径が１０μｍを超えると、それが核となって成膜される
フイルムに孔があいたり、製膜中に切れたりするおそれ
がある。As the filler, for example, CaCO 3 , talc, MgO, Al (OH) 3 or the like is used. The particle size of the filler is preferably 0.1 to 10 μm. If the particle size exceeds 10 μm, the film may serve as nuclei to form holes in the film, or the film may be cut during film formation.
【０００８】配合物におけるフィラーの含有量を上記の
ように限定した理由は、５０重量部未満であれば手切れ
性が不充分であり、７０重量部を超えるとフィッシュア
イの発生が著しくなるとともに、例えば共押出成形法に
より表面保護フイルムを製造する際に、押出機とダイと
の間に配置されたスクリーンに目詰まりが発生し成膜が
困難となる。The reason why the content of the filler in the composition is limited as described above is that if the content is less than 50 parts by weight, the hand-cutting property is insufficient, and if it exceeds 70 parts by weight, the generation of fish eyes becomes remarkable and For example, when the surface protection film is produced by the coextrusion molding method, the screen disposed between the extruder and the die is clogged and film formation becomes difficult.
【０００９】基材フイルムの厚みを３０〜５０μｍと限
定した理由は、３０μｍ未満であれば強度不足で伸び易
くて貼付時の作業性が悪くなり、５０μｍを超えると強
度が高すぎて手切れ性が悪くなるからである。The reason why the thickness of the substrate film is limited to 30 to 50 μm is that if it is less than 30 μm, it is easily stretched due to insufficient strength and the workability at the time of sticking is deteriorated, and if it exceeds 50 μm, the strength is too high and it is easily cut by hand. Is worse.
【００１０】本発明の表面保護フイルムに使用される粘
着剤層としては、従来の表面保護フイルムに用いられて
いるような、例えばエチレン−酢酸ビニル共重合体、エ
チレン−エチルアクリレート共重合体、ポリスチレン、
ポリイソプレン、ポリスチレンブロック共重合体等種々
のポリマーに粘着付与樹脂、展開油軟化剤等が混練され
たものなどが挙げられる。The pressure-sensitive adhesive layer used in the surface protective film of the present invention includes, for example, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, polystyrene as used in conventional surface protective films. ,
Examples thereof include those obtained by kneading various polymers such as polyisoprene and polystyrene block copolymer with a tackifying resin, a developing oil softening agent and the like.
【００１１】[0011]
【作用】基材フイルムが、密度０．９２０〜０．９３５
ｇ／ｃｍ3 であるポリオレフィン系樹脂１００重量部に
対し、フィラーが５０〜７０重量部含有され、且つ基材
フイルムの厚さが３０〜５０μｍであるから、延伸によ
る樹脂の分子配向を乱して横方向の引裂き強度が低下
し、手切れ性がよくなる。又、伸びが抑制されて貼付作
業し易くなる。Function: The base film has a density of 0.920 to 0.935.
Since the filler is contained in an amount of 50 to 70 parts by weight and the base film has a thickness of 30 to 50 μm with respect to 100 parts by weight of the polyolefin-based resin of g / cm 3 , the molecular orientation of the resin due to stretching is disturbed. The tear strength in the lateral direction is reduced and the hand tearability is improved. Further, the elongation is suppressed, and the sticking work becomes easy.
【００１２】[0012]
【実施例】次に本発明表面保護フイルムの実施例を説明
する。 （実施例１〜８）中密度ポリエチレン樹脂（ＭＤＰＥ）
として「ハイゼックス３５１０Ｆ（三井石油化学社
製）、低密度ポリエチレン樹脂（ＬＤＰＥ）として「Ｃ
Ｙ４４３」（住友化学社製）、フィラーとしてＣａＣＯ
3 を使用し、ＨＤＰＥ、ＭＤＰＥ、ＬＤＰＥそれぞれ１
００重量部に対してフィラーを表１に示すような比率で
含有せしめてなる８種類の配合物を用意した。EXAMPLES Examples of the surface protective film of the present invention will be described below. (Examples 1 to 8) Medium density polyethylene resin (MDPE)
"Hi-Zex 3510F (manufactured by Mitsui Petrochemical Co., Ltd.), low density polyethylene resin (LDPE)" C
Y443 "(Sumitomo Chemical Co., Ltd.), CaCO as a filler
3 using, HDPE, MDPE, LDPE, respectively 1
Eight types of formulations were prepared in which the filler was contained in an amount of 100 parts by weight as shown in Table 1.
【００１３】（比較例１〜６）上記実施例で用いた樹脂
に加えて高密度ポリエチレン樹脂（ＨＤＰＥ）「ハイゼ
ックス３３００Ｆ」（三井石油化学社製）、低密度ポリ
エチレン樹脂「ＬＫ−３０」（三菱油化社製）も使用
し、表１に示すような比率でフィラーを含有せしめてな
る６種類の配合物を用意した。Comparative Examples 1 to 6 In addition to the resins used in the above examples, high density polyethylene resin (HDPE) "Hi-Zex 3300F" (manufactured by Mitsui Petrochemical Co., Ltd.), low density polyethylene resin "LK-30" (Mitsubishi 6 types of formulations were prepared by using fillers manufactured by Yuka Co., Ltd. and containing fillers in the ratios shown in Table 1.
【００１４】上記実施例と比較例のそれぞれの配合物
と、エチレン−酢酸ビニル共重合体からなる粘着剤とを
使用し、低温でのインフレーション法による共押出成形
により表面保護フイルムを製造した。又、各表面保護フ
イルムの基材フイルムの樹脂密度、及び基材フイルムの
厚みと粘着剤層の厚みは表１に示すとおりとした。A surface protective film was produced by co-extrusion molding by an inflation method at a low temperature using the respective blends of the above Examples and Comparative Examples and a pressure sensitive adhesive comprising an ethylene-vinyl acetate copolymer. The resin density of the base film of each surface protection film, the thickness of the base film, and the thickness of the pressure-sensitive adhesive layer were as shown in Table 1.
【００１５】上記実施例１〜８及び比較例１〜６の各表
面保護フイルムを５０ｍｍ幅にして以下の方法で評価し
た。 評価試験 （１）貼付性： 表面の平滑なステンレス板に各フイル
ムを手で貼り付ける際にフイルムが伸びる状態等を観察
した。 （２）手切れ性： 表面の平滑なステンレス板に各フイ
ルムを手で貼り付け、残りのフイルムを手で千切って手
切れ性を見た。The surface protection films of Examples 1 to 8 and Comparative Examples 1 to 6 each having a width of 50 mm were evaluated by the following methods. Evaluation test (1) Adhesiveness: When each film was manually attached to a stainless steel plate having a smooth surface, the state in which the film stretched was observed. (2) Hand tearability: Each film was attached to a stainless steel plate with a smooth surface by hand, and the remaining films were cut by hand to see the hand tearability.
【００１６】[0016]
【表１】 [Table 1]
【００１７】表１から明らかなように、実施例１〜８の
ものはいずれも良好な貼付性、手切れ性を示した。これ
に対し、比較例１のものは貼付性、手切れ性のいずれか
が悪く、又、製膜できないものもあった。As is clear from Table 1, all of Examples 1 to 8 showed good stickability and hand tearability. On the other hand, in Comparative Example 1, either the sticking property or the hand-cutting property was poor, and there were some films which could not be formed into a film.
【００１８】[0018]
【発明の効果】本発明粘着テープは上記の構成であり、
基材フイルムが、ポリオレフィン系樹脂１００重量部に
対し、フィラーが５０〜７０重量部含有され、且つ基材
フイルムの厚さが３０〜５０μｍであるから、横方向の
引裂き強度が低下し、フイルムの横方向における手切れ
性にすぐれ、伸びが少ないので貼り付け作業性もよい。The adhesive tape of the present invention has the above-mentioned constitution,
The base film contains 50 to 70 parts by weight of the filler with respect to 100 parts by weight of the polyolefin resin, and the thickness of the base film is 30 to 50 μm, so that the tear strength in the lateral direction is reduced and It has excellent hand-cutability in the lateral direction and little stretch, so it is easy to work with.
Claims (1)
材フイルムの片面に形成された粘着層とよりなる表面保
護フイルムにおいて、基材フイルムが密度０．９２０〜
０．９３５ｇ／ｃｍ3 であるポリオレフィン系樹脂１０
０重量部に対してフィラー５０〜７０重量部を含有せし
めた配合物で形成され、且つ基材の厚さが３０〜５０μ
ｍであることを特徴とする表面保護フイルム。1. A surface protection film comprising a base film made of a thermoplastic resin and an adhesive layer formed on one side of the base film, wherein the base film has a density of 0.920 to.
Polyolefin resin 10 having 0.935 g / cm 3
It is formed of a composition containing 50 to 70 parts by weight of filler with respect to 0 parts by weight, and the thickness of the base material is 30 to 50 μm.
m is a surface protection film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15523693A JPH079642A (en) | 1993-06-25 | 1993-06-25 | Surface protective film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15523693A JPH079642A (en) | 1993-06-25 | 1993-06-25 | Surface protective film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH079642A true JPH079642A (en) | 1995-01-13 |
Family
ID=15601516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15523693A Pending JPH079642A (en) | 1993-06-25 | 1993-06-25 | Surface protective film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079642A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009522400A (en) * | 2005-12-29 | 2009-06-11 | オミヤ、ディベロップメント、アクチェンゲゼルシャフト | Calcium carbonate barrier film and use thereof |
| JP2012072224A (en) * | 2010-09-28 | 2012-04-12 | Toppan Printing Co Ltd | Surface protective film |
| WO2022202856A1 (en) * | 2021-03-25 | 2022-09-29 | リンテック株式会社 | Multilayer label |
| WO2022202857A1 (en) * | 2021-03-25 | 2022-09-29 | リンテック株式会社 | Multilayer label |
-
1993
- 1993-06-25 JP JP15523693A patent/JPH079642A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009522400A (en) * | 2005-12-29 | 2009-06-11 | オミヤ、ディベロップメント、アクチェンゲゼルシャフト | Calcium carbonate barrier film and use thereof |
| US9321249B2 (en) | 2005-12-29 | 2016-04-26 | Omya International Ag | Calcium carbonate barrier films and uses thereof |
| US11117357B2 (en) | 2005-12-29 | 2021-09-14 | Omya International Ag | Calcium carbonate barrier films and uses thereof |
| JP2012072224A (en) * | 2010-09-28 | 2012-04-12 | Toppan Printing Co Ltd | Surface protective film |
| WO2022202856A1 (en) * | 2021-03-25 | 2022-09-29 | リンテック株式会社 | Multilayer label |
| WO2022202857A1 (en) * | 2021-03-25 | 2022-09-29 | リンテック株式会社 | Multilayer label |
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