JPH07224255A - Surface-protective film - Google Patents
Surface-protective filmInfo
- Publication number
- JPH07224255A JPH07224255A JP6202027A JP20202794A JPH07224255A JP H07224255 A JPH07224255 A JP H07224255A JP 6202027 A JP6202027 A JP 6202027A JP 20202794 A JP20202794 A JP 20202794A JP H07224255 A JPH07224255 A JP H07224255A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- weight
- parts
- protective film
- surface protective
- 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
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- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (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、塗装鋼板などの表面に仮着して、塵の付着
や傷つきがないように、その表面を保護するために使用
される表面保護フイルムに関し、更に詳しくは、金属
板、ポリエステル系塗装鋼板、アクリル系塗装鋼板に対
して優れた特性を示す表面保護フイルムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for temporarily adhering to surfaces of synthetic resin plates, decorative plywood, metal plates, painted steel plates, etc. to protect the surfaces thereof so that dust is not attached or scratched. More specifically, the present invention relates to a surface protective film that exhibits excellent properties with respect to metal plates, polyester-based coated steel sheets, and acrylic-based coated steel sheets.
【０００２】[0002]
【従来の技術】合成樹脂板、化粧合板、金属板、塗装鋼
板などの表面を加工時や搬送時に傷付きや汚れを防止す
るために表面保護フイルムが賞用されている。表面保護
フイルムは、熱可塑性樹脂や紙からなる基材層の片面に
粘着層が形成された構造であり、適度の粘着力（仮着
性）を有するとともに、使用後に各種被着体の表面を粘
着剤で汚染することなく容易に剥がすことができなけれ
ばならない。2. Description of the Related Art Surface protective films have been widely used to prevent scratches and stains on the surfaces of synthetic resin plates, decorative plywood, metal plates, painted steel plates, etc. during processing and transportation. The surface protection film has a structure in which an adhesive layer is formed on one side of a base material layer made of a thermoplastic resin or paper, has an appropriate adhesive force (temporary adhesion), and protects the surface of various adherends after use. It should be easy to remove without contamination with adhesive.
【０００３】表面保護フイルムとして、例えば、特公昭
５８−３０９１１号公報、特開昭６１−１０３９７５号
公報などにより、ポリオレフィン系樹脂などの熱可塑性
樹脂からなる基材層の片面に、一般式Ａ−Ｂ−Ａ（但
し、Ａはスチレン重合体ブロック、Ｂはブタジエン重合
体ブロック、イソプレン重合体ブロックまたはエチレン
−ブチレン重合体ブロック）で表されるブロック共重合
体エラストマー単独或いはこれに粘着付与樹脂とを混和
してなる粘着剤層が形成された表面保護フイルムが開示
されている。As the surface protective film, for example, Japanese Patent Publication No. 58-30911 and Japanese Patent Laid-Open No. 61-103975 disclose that a general formula A- is formed on one surface of a base material layer made of a thermoplastic resin such as a polyolefin resin. B-A (where A is a styrene polymer block, B is a butadiene polymer block, an isoprene polymer block or an ethylene-butylene polymer block), a block copolymer elastomer alone or a tackifier resin A surface protective film having a pressure-sensitive adhesive layer formed by mixing is disclosed.
【０００４】又、特開平１−１２９０８５号公報には一
般式Ａ−Ｂ−Ａのブロック共重合体（但し、Ａはポリス
チレン重合体ブロック、Ｂはポリブタジエンもしくはポ
リイソプレンあるいはそれらの水添加物からなるポリマ
ーブロック）、粘着付与樹脂、高級アルキル基の導入さ
れたポリエチレンイミンからなる粘着剤を用いた表面保
護フイルムが開示されている。Further, Japanese Patent Laid-Open No. 1-129085 discloses a block copolymer of the general formula A-B-A (where A is a polystyrene polymer block, B is polybutadiene or polyisoprene or a water additive thereof). A surface protection film using a pressure-sensitive adhesive comprising a polymer block), a tackifying resin, and a polyethyleneimine having a higher alkyl group introduced therein is disclosed.
【０００５】[0005]
【発明が解決しようとする課題】上記特開昭５８−３０
９１１号公報及び特開昭６１−１０３９７５号公報に記
載の表面保護フイルムは、金属板（ステンレス板、アル
ミニウム板等）、アクリル系塗装鋼板に貼り付けた後の
接着力亢進が激しく、剥離速度を速くすることができな
い。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The surface protection films described in JP-A No. 911 and JP-A-61-103975 show a marked increase in adhesive strength after being adhered to a metal plate (stainless steel plate, aluminum plate, etc.) or acrylic coated steel plate, and have a peeling speed. I can't be fast.
【０００６】特開平１−１２９０８５号公報記載の表面
保護フイルムは、金属板に貼り付けた場合は接着力亢進
することなく容易に剥がせるが、アクリル系塗装鋼板に
貼り付けると加圧後に接着亢進し、高速で剥離すること
が困難である。The surface protective film described in Japanese Patent Laid-Open No. 1-129085 can be easily peeled off without adhering to the adhesive force when it is attached to a metal plate. However, it is difficult to peel at high speed.
【０００７】本発明は上記従来の問題点を解消し、金属
板、塗装鋼板等の被着体に貼り付けて使用後に高速剥離
することができ、且つ、剥離後の被着体表面を汚すこと
のない表面保護フイルムを提供することを目的とする。The present invention solves the above-mentioned problems of the prior art, can be attached to an adherend such as a metal plate or a coated steel plate and can be peeled off at high speed after use, and the surface of the adherend after peeling can be soiled. The purpose of the present invention is to provide a surface protection film which does not have any surface.
【０００８】[0008]
【課題を解決するための手段】請求項１記載の本発明表
面保護フイルムは、ポリオレフィン樹脂からなる基材フ
イルムの片面に粘着剤層が設けられてなる表面保護フイ
ルムにおいて、上記粘着剤層が一般式Ａ−Ｂ−Ａで表さ
れるブロック共重合体及び一般式Ａ−Ｂで表されるブロ
ック共重合体（但し、Ａはスチレン系重合体ブロック、
Ｂはブタジエン重合体ブロック、イソプレン重合体ブロ
ック、またはそれらを水素添加して得られるオレフィン
重合体ブロックである）１００重量部に対し、脂肪族系
石油樹脂、脂環族系水添石油樹脂、芳香族系石油樹脂、
Ｃ5 系石油樹脂、テルペン樹脂、テルペン・フェノール
樹脂、クマロン・インデン樹脂、ロジン樹脂から選ばれ
た少なくとも１種類の樹脂０〜１２０重量部の他に、α
メチルスチレン樹脂５〜１２０重量部及び／又は脂肪酸
アミド０．０５〜５重量部を含有する組成物からなるこ
とを特徴とするものである。The surface protective film of the present invention according to claim 1 is a surface protective film in which a pressure-sensitive adhesive layer is provided on one side of a base film made of a polyolefin resin, and the above-mentioned pressure-sensitive adhesive layer is generally used. The block copolymer represented by the formula A-B-A and the block copolymer represented by the general formula A-B (where A is a styrene-based polymer block,
(B is a butadiene polymer block, an isoprene polymer block, or an olefin polymer block obtained by hydrogenating them) 100 parts by weight of aliphatic petroleum resin, alicyclic hydrogenated petroleum resin, aromatic Group petroleum resin,
In addition to 0 to 120 parts by weight of at least one resin selected from C 5 petroleum resin, terpene resin, terpene-phenol resin, coumarone-indene resin and rosin resin, α
It is characterized by comprising a composition containing 5 to 120 parts by weight of a methylstyrene resin and / or 0.05 to 5 parts by weight of a fatty acid amide.
【０００９】又、請求項２記載の本発明表面保護フイル
ムは、請求項１記載の表面保護フイルムの粘着剤層に、
更に高級アルキル基の導入されたポリエチレンイミンが
０．０５〜５重量部添加された組成物からなることを特
徴とするものである。The surface protective film of the present invention according to claim 2 is the pressure-sensitive adhesive layer of the surface protective film according to claim 1,
Furthermore, the composition is characterized in that it comprises a composition to which 0.05 to 5 parts by weight of polyethyleneimine having a higher alkyl group introduced is added.
【００１０】本発明で使用できるポリオレフィン系樹脂
の樹脂としては、低密度ポリエチレン、中密度ポリエチ
レン、高密度ポリエチレン、線状低密度ポリエチレン、
エチレン−αオレフィン共重合体、プロピレン−αオレ
フィン共重合体、エチレン−エチルアクリレート共重合
体、エチレン−酢酸ビニル共重合体、エチレン−メチル
メタクリレート共重合体、エチレン−ｎブチルアクリレ
ート共重合体、ポリプロピレン（ホモポリマー、ランダ
ムコポリマー、ブロックコポリマー）等が挙げられる。
又、上記のものの任意の組合せによる混合物も使用でき
る。The polyolefin resin which can be used in the present invention includes low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene,
Ethylene-α-olefin copolymer, propylene-α-olefin copolymer, ethylene-ethyl acrylate copolymer, ethylene-vinyl acetate copolymer, ethylene-methyl methacrylate copolymer, ethylene-n-butyl acrylate copolymer, polypropylene (Homopolymer, random copolymer, block copolymer) and the like.
It is also possible to use mixtures of any of the above.
【００１１】粘着剤の主成分である一般式Ａ−Ｂ−Ａで
表されるブロック共重合体及び一般式Ａ−Ｂで表される
ブロック共重合体（但し、Ａはスチレン系重合体ブロッ
ク、Ｂはブタジエン重合体ブロック、イソプレン重合体
ブロック、またはそれらを水素添加して得られるオレフ
ィン重合体ブロックである）（以下「スチレン系熱可塑
性エラストマー」という）は、スチレン系重合体ブロッ
クＡは平均分子量が４０００〜１１５０００程度のもの
が好ましく、更に８０００〜６００００程度のものがよ
り好ましい。そのガラス転移温度は２０℃以上のものが
好ましい。The block copolymer represented by the general formula A-B-A and the block copolymer represented by the general formula A-B which are the main components of the pressure-sensitive adhesive (where A is a styrene polymer block, B is a butadiene polymer block, an isoprene polymer block, or an olefin polymer block obtained by hydrogenating them) (hereinafter referred to as "styrene-based thermoplastic elastomer") is a styrene-based polymer block A having an average molecular weight. Is preferably about 4000 to 115000, more preferably about 8000 to 60,000. The glass transition temperature is preferably 20 ° C. or higher.
【００１２】又、ブタジエン重合体ブロック、イソプレ
ン重合体ブロックまたはこれらを水素添加して得られる
オレフィン重合体ブロックＢは、平均分子量が２０００
０〜４５００００程度のものが好ましく、更に５０００
０〜３０００００程度のものがより好ましい。そのガラ
ス転移温度は−２０℃以下のものが好ましい。Further, the butadiene polymer block, the isoprene polymer block or the olefin polymer block B obtained by hydrogenating them has an average molecular weight of 2000.
0 to 450,000 is preferable, and further 5000
It is more preferably about 0 to 300,000. The glass transition temperature is preferably −20 ° C. or lower.
【００１３】上記Ａ成分とＢ成分との好ましい重量比は
Ａ／Ｂ＝２／９８〜５０／５０であり、さらに好ましく
はＡ／Ｂ＝５／９５〜３０／７０である。又、一般式Ａ
−Ｂ−Ａブロック共重合体と一般式Ａ−Ｂブロック共重
合体との好ましい重量比はＡ−Ｂ−Ａ／Ａ−Ｂ＝１００
／０〜２０／８０であり、さらに好ましくはＡ−Ｂ−Ａ
／Ａ−Ｂ＝１００／０〜５０／５０である。The preferred weight ratio of the A component and the B component is A / B = 2/98 to 50/50, and more preferably A / B = 5/95 to 30/70. Also, the general formula A
The preferable weight ratio of the -BA block copolymer and the general formula AB block copolymer is ABAA / AB = 100.
/ 0 to 20/80, more preferably ABA.
/ AB = 100/0 to 50/50.
【００１４】請求項１記載の表面保護フイルムに使用さ
れる粘着付与樹脂は、Ａ−Ｂ−Ａブロック共重合体及び
Ａ−Ｂブロック共重合体のＢ成分と選択的に相溶するも
のであり、脂肪族系石油樹脂、脂環族系石油樹脂、脂環
族系水添石油樹脂、芳香族系石油樹脂、Ｃ5 系石油樹
脂、テルペン樹脂、テルペン・フェノール樹脂クマロン
・インデン樹脂、ロジン樹脂等の少なくとも１種類が選
ばれる（以下「相溶性樹脂」という）。上記相溶性樹脂
はスチレン系熱可塑性エラストマーに単独で混合しても
よく、又、複数種類混合してもよい。The tackifying resin used in the surface protective film according to claim 1 is a resin which is selectively compatible with the A-B-A block copolymer and the B component of the A-B block copolymer. , Aliphatic petroleum resin, alicyclic petroleum resin, alicyclic hydrogenated petroleum resin, aromatic petroleum resin, C 5 petroleum resin, terpene resin, terpene / phenolic resin, coumarone / indene resin, rosin resin, etc. At least one of these is selected (hereinafter referred to as "compatible resin"). The above-mentioned compatible resins may be mixed alone in the styrene-based thermoplastic elastomer, or may be mixed in plural kinds.
【００１５】上記相溶性樹脂の添加量が０重量部に近く
なると接着性が非常に弱くなり、１２０重量部を超える
と粘着剤層の凝集力がなくなって被着体に糊残りを生ず
るので、好ましい範囲は５〜１２０重量部、より好まし
くは１０〜１００重量部、さらに好ましくは１０〜６０
重量部である。When the amount of the compatible resin added is close to 0 parts by weight, the adhesiveness becomes very weak, and when it exceeds 120 parts by weight, the cohesive force of the pressure-sensitive adhesive layer is lost and adhesive residue is left on the adherend. The preferred range is 5 to 120 parts by weight, more preferably 10 to 100 parts by weight, still more preferably 10 to 60 parts by weight.
Parts by weight.
【００１６】本発明では粘着剤に適度の剥離性を付与す
るため、上記相溶性樹脂の他に、αメチルスチレン樹脂
５〜１２０重量部、又は脂肪酸アミド０．０５〜５重量
部のいずれか、又は両方を添加する。In the present invention, in order to impart an appropriate releasability to the pressure-sensitive adhesive, in addition to the above compatible resin, either 5 to 120 parts by weight of α-methylstyrene resin or 0.05 to 5 parts by weight of fatty acid amide, Or add both.
【００１７】αメチルスチレン樹脂はスチレン系熱可塑
性エラストマーのＢ成分と相溶しないので、この添加量
が増えると接着性は低下し、粘着剤層と被着体表面との
結合力は弱まり、加圧状態で経時後の接着力は大きくな
らない。それにより糊残りすることなく被着体から高速
剥離することができる。αメチルスチレン樹脂の添加量
は５重量部よりも少ないと接着力が小さくならず、１２
０重量部を超えると接着性が消失する。Since the α-methylstyrene resin is not compatible with the B component of the styrene-based thermoplastic elastomer, if the amount of addition is increased, the adhesiveness is lowered and the bonding force between the pressure-sensitive adhesive layer and the surface of the adherend is weakened. The adhesive strength does not increase after lapse of time under pressure. This allows high-speed peeling from the adherend without leaving an adhesive residue. If the amount of α-methylstyrene resin added is less than 5 parts by weight, the adhesive strength will not decrease, and
When it exceeds 0 parts by weight, the adhesiveness is lost.
【００１８】脂肪酸アミドとしては、エチレンビスステ
アリン酸アミド、ステアリン酸アミド、Ｎ，Ｎ′−メチ
レンビスステアリン酸アミド、オレイン酸アミド、ラウ
リル酸アミド等が挙げられる。脂肪酸アミドを０．０５
〜５重量部添加すると、粘着剤層の適度の初期接着力を
維持しながらαメチルスチレン樹脂の存在により被着体
からの経時後の剥離力がさらに低下し、すぐれた高速剥
離性が得られる。この添加量は０．０５重量部よりも少
ないと剥離力の上昇を抑えることができず、５重量部を
超えると初期接着性がなくなり被着体に接着できない。
上記の範囲において脂肪酸アミドの添加量が増えるに従
って初期接着力が下がり、経時後の剥離に際してすぐれ
た高速剥離性が得られる。Examples of the fatty acid amides include ethylenebisstearic acid amide, stearic acid amide, N, N'-methylenebisstearic acid amide, oleic acid amide, and lauric acid amide. Fatty acid amide 0.05
When it is added in an amount of up to 5 parts by weight, the peel strength from the adherend after aging is further reduced due to the presence of the α-methylstyrene resin while maintaining an appropriate initial adhesive strength of the pressure-sensitive adhesive layer, and excellent high-speed peelability is obtained. . If the amount added is less than 0.05 parts by weight, the increase in the peeling force cannot be suppressed, and if it exceeds 5 parts by weight, the initial adhesiveness is lost and the adherend cannot be adhered.
In the above range, the initial adhesive strength decreases as the amount of fatty acid amide added increases, and excellent high-speed peelability can be obtained when peeling after aging.
【００１９】本発明で高速剥離性にすぐれるとは、高速
で剥離する際の剥離力が低速の場合よりも低いことをい
う。高速とは例えば被着体から通常手作業で剥離すると
きの速度を指し２０〜４０ｍ／分である。一方、ＪＩＳ
Ｚ０２３７−８に規定される剥離力の測定方法である
３００ｍｍ／分は低速である。The term "excellent high-speed peelability" as used in the present invention means that the peeling force when peeling at high speed is lower than that at low speed. The high speed means, for example, a speed at which the adherend is usually manually peeled off, and is 20 to 40 m / min. On the other hand, JIS
300 mm / min, which is a method for measuring the peeling force specified in Z0237-8, is a low speed.
【００２０】又、基材フイルムに粘着剤層を積層する方
法は特に限定しないが、共押出成形による方法が製造装
置及び製造工程が簡単であり、積層強度が高く、製造能
率もよいので好ましい。The method of laminating the pressure-sensitive adhesive layer on the substrate film is not particularly limited, but the method of coextrusion molding is preferable because the production apparatus and the production process are simple, the lamination strength is high, and the production efficiency is good.
【００２１】請求項２記載の表面保護フイルムは、請求
項１記載の表面保護フイルムの粘着剤層に、更に高級ア
ルキル基の導入されたポリエチレンイミンが０．０５〜
５重量部添加される。初期接着力及び加圧経時後の接着
力亢進を避けることができ、更にすぐれた高速剥離性が
得られる。In the surface protective film according to claim 2, the adhesive layer of the surface protective film according to claim 1 further comprises a polyethyleneimine having a higher alkyl group introduced in an amount of 0.05 to 0.05.
5 parts by weight are added. It is possible to avoid an increase in initial adhesive force and an increase in adhesive force after a lapse of pressure, and further excellent high-speed peelability can be obtained.
【００２２】請求項１〜２記載の表面保護フイルムの粘
着剤層には必要に応じて酸化防止剤等の安定剤を添加し
てもよく、例えばチバガイギー社製の商品名「イルガノ
クス１０１０」等を添加すると熱劣化に対して効果的で
ある。If desired, a stabilizer such as an antioxidant may be added to the pressure-sensitive adhesive layer of the surface protective film according to claims 1 and 2. For example, a trade name "Irganox 1010" manufactured by Ciba-Geigy Co., Ltd. may be added. Addition is effective against heat deterioration.
【００２３】[0023]
【作用】請求項１記載の表面保護フイルムは、粘着剤層
が一般式Ａ−Ｂ−Ａで表されるブロック共重合体及び一
般式Ａ−Ｂで表されるブロック共重合体（但し、Ａはス
チレン系重合体ブロック、Ｂはブタジエン重合体ブロッ
ク、イソプレン重合体ブロック、またはそれらを水素添
加して得られるオレフィン重合体ブロックである）１０
０重量部に対して、上記Ｂ成分と選択的に相溶する相溶
性樹脂０〜１２０重量部の他に、α−メチルスチレン樹
脂５〜１２０重量部及び／又は脂肪酸アミド０．０５〜
５重量部を含有する組成物からなるので、経時後におい
ても高速剥離性にすぐれ、又、粘着剤層の適度の初期接
着力を維持しながら被着体表面との結合力は弱まり、加
圧状態でも経時後の接着力は亢進せず、それにより被着
体に糊残りすることなく高速剥離できる。In the surface protective film according to claim 1, the pressure-sensitive adhesive layer has a block copolymer represented by the general formula A-B-A and a block copolymer represented by the general formula A-B (provided that A Is a styrene polymer block, B is a butadiene polymer block, an isoprene polymer block, or an olefin polymer block obtained by hydrogenating them.) 10
In addition to 0 to 120 parts by weight of a compatible resin that is selectively compatible with the component B, 0 to 120 parts by weight, an α-methylstyrene resin of 5 to 120 parts by weight and / or a fatty acid amide of 0.05 to
Since it is composed of a composition containing 5 parts by weight, it has excellent high-speed peelability even after a lapse of time, and the adhesive strength to the adherend surface is weakened while maintaining an appropriate initial adhesive strength of the pressure-sensitive adhesive layer. Even in the state, the adhesive strength after aging does not increase, which allows high-speed peeling without leaving an adhesive residue on the adherend.
【００２４】更に、請求項２記載の表面保護フイルムで
は、請求項１記載の表面保護フイルムの粘着剤層に、更
に高級アルキル基の導入されたポリエチレンイミンが
０．０５〜５重量部添加されることにより、初期接着力
及び加圧経時後の接着力亢進を避けることができるとと
もに更にすぐれた高速剥離性が得られる。Further, in the surface protective film according to claim 2, 0.05 to 5 parts by weight of polyethyleneimine having a higher alkyl group introduced is further added to the pressure-sensitive adhesive layer of the surface protective film according to claim 1. As a result, it is possible to avoid the initial adhesive force and the increase in the adhesive force after the lapse of time under pressure and to obtain more excellent high-speed peelability.
【００２５】[0025]
【実施例】以下に本発明の実施例を挙げて具体的に説明
する。 （実施例１）スチレン−ブタジエン−スチレンブロック
共重合体の水素添加物（ＳＥＢＳ）（シェルジャパン社
製 商品名：クレイトンＧ１６５７）、粘着付与樹脂
（トーネックス社製 商品名：エスコレッツ５３０
０）、αメチルスチレン樹脂（ハーキュレス社製 商品
名：エンデックス１５５）、酸化防止剤（チバガイギー
社製商品名：イルガノクス１０１０）とからなる表１に
示す配合の粘着剤を線状低密度ポリエチレン（三菱油化
社製，商品名：ＵＦ８４０）と２層共押出し法により押
出して、厚み６０μｍの線状低密度ポリエチレンに厚み
１０μｍの粘着剤層が積層されてなる表面保護フイルム
を得た。EXAMPLES The present invention will be specifically described below with reference to examples. (Example 1) Hydrogenated product of styrene-butadiene-styrene block copolymer (SEBS) (manufactured by Shell Japan Co., Ltd .: trade name: Kraton G1657), tackifying resin (manufactured by Tonex Co., trade name: Escoletz 530)
0), α-methyl styrene resin (trade name: Endex 155 manufactured by Hercules Co., Ltd.), and an antioxidant (trade name: Irganox 1010 manufactured by Ciba-Geigy Co., Ltd.). Mitsubishi Yuka Co., Ltd., trade name: UF840) was extruded by a two-layer coextrusion method to obtain a surface protective film in which a linear low density polyethylene having a thickness of 60 μm and an adhesive layer having a thickness of 10 μm were laminated.
【００２６】（実施例２）粘着付与樹脂を脂環族系水添
石油樹脂（荒川化学工業社製 商品名：アルコンＰ１０
０）とし、その添加量を１０重量部、又、αメチルスチ
レン樹脂の配合量を１０重量部とし、基材フイルムとし
て線状低密度ポリエチレンの代わりに低密度ポリエチレ
ンを用いた以外は実施例１と同様の表面保護フイルムを
得た。(Example 2) An alicyclic hydrogenated petroleum resin (trade name: Alcon P10 manufactured by Arakawa Chemical Industry Co., Ltd.) was used as the tackifying resin.
No. 0), the addition amount was 10 parts by weight, the blending amount of the α-methylstyrene resin was 10 parts by weight, and low density polyethylene was used instead of the linear low density polyethylene as the base film. A surface protective film similar to the above was obtained.
【００２７】（実施例３）αメチルスチレン樹脂の配合
量を１００重量部とし、基材フイルムとして線状低密度
ポリエチレンの代わりに低密度ポリエチレンを用いた以
外は実施例１と同様の表面保護フイルムを得た。(Example 3) The same surface protection film as in Example 1 except that the blending amount of α-methylstyrene resin was 100 parts by weight and low density polyethylene was used instead of linear low density polyethylene as the base film. Got
【００２８】（実施例４）粘着付与樹脂の配合量を１０
重量部、αメチルスチレン樹脂の代わりにエチレンビス
ステアリン酸アミド１重量部を用いた以外は実施例１と
同様の表面保護フイルムを得た。(Example 4) The compounding amount of the tackifying resin was 10
A surface protective film similar to that of Example 1 was obtained except that 1 part by weight of ethylenebisstearic acid amide was used instead of 1 part by weight of the α-methylstyrene resin.
【００２９】（実施例５）エチレンビスステアリン酸ア
ミドの代わりにステアリン酸アミド３重量部を用いた以
外は実施例４と同様の表面保護フイルムを得た。Example 5 A surface protective film similar to that of Example 4 was obtained except that 3 parts by weight of stearic acid amide was used instead of ethylenebisstearic acid amide.
【００３０】（実施例６）エチレンビスステアリン酸ア
ミドの代わりにオレイン酸アミド０．５重量部を用いた
以外は実施例４と同様の表面保護フイルムを得た。Example 6 A surface protective film similar to that of Example 4 was obtained except that 0.5 part by weight of oleic acid amide was used instead of ethylenebisstearic acid amide.
【００３１】（実施例７）エチレンビスステアリン酸ア
ミドの代わりにラウリル酸アミド４重量部を用いた以外
は実施例４と同様の表面保護フイルムを得た。Example 7 A surface protective film similar to that of Example 4 was obtained except that 4 parts by weight of lauric acid amide was used instead of ethylenebisstearic acid amide.
【００３２】（実施例８）αメチルスチレン樹脂の配合
量を３０重量部とし、更にエチレンビスステアリン酸ア
ミド１重量部を更に添加した以外は実施例３と同様の表
面保護フイルムを得た。Example 8 A surface protective film similar to that of Example 3 was obtained except that the amount of α-methylstyrene resin was 30 parts by weight and 1 part by weight of ethylenebisstearic acid amide was further added.
【００３３】（実施例９）エチレンビスステアリン酸ア
ミド１重量部を更に添加した以外は実施例２と同様の表
面保護フイルムを得た。Example 9 A surface protective film similar to that of Example 2 was obtained except that 1 part by weight of ethylenebisstearic acid amide was further added.
【００３４】（実施例１０）エチレンビスステアリン酸
アミドの代わりにポリエチレンイミン（オクタデシルイ
ソシアネートを０．８ｍｏｌ付加反応させた数平均分子
量１００００のもの）１重量部を更に添加した以外は実
施例８と同様の表面保護フイルムを得た。(Example 10) The same as Example 8 except that 1 part by weight of polyethyleneimine (having a number average molecular weight of 10,000 obtained by addition reaction of octadecyl isocyanate of 0.8 mol) was further added instead of ethylenebisstearic acid amide. The surface protection film of was obtained.
【００３５】（実施例１１）実施例１０で用いたものと
同じポリエチレンイミン２重量部を更に添加した以外は
実施例２と同様の表面保護フイルムを得た。Example 11 A surface protective film similar to that of Example 2 was obtained except that 2 parts by weight of the same polyethyleneimine as used in Example 10 was further added.
【００３６】（実施例１２）ポリエチレンイミンを０．
５重量部更に添加した以外は実施例４と同様の表面保護
フイルムを得た。(Example 12) Polyethyleneimine was added to 0.
A surface protective film similar to that in Example 4 was obtained except that 5 parts by weight was further added.
【００３７】（実施例１３）エチレンビスステアリン酸
アミドの配合量を０．５重量部とし、上記ポリエチレン
イミンを０．１重量部更に添加した以外は実施例８と同
様の表面保護フイルムを得た。(Example 13) A surface protective film similar to that of Example 8 was obtained except that the amount of ethylenebisstearic acid amide was 0.5 part by weight and 0.1 part by weight of the polyethyleneimine was further added. .
【００３８】（実施例１４）エチレンビスステアリン酸
アミドを０．５重量部、ポリエチレンイミンを４重量部
添加した以外は実施例２と同様の表面保護フイルムを得
た。Example 14 A surface protective film similar to that of Example 2 was obtained except that 0.5 parts by weight of ethylenebisstearic acid amide and 4 parts by weight of polyethyleneimine were added.
【００３９】（比較例１）粘着剤にエチレンビスステア
リン酸アミドを添加しなかった以外は実施例４と同様の
表面保護フイルムを得た。Comparative Example 1 A surface protective film similar to that of Example 4 was obtained except that ethylenebisstearic acid amide was not added to the pressure-sensitive adhesive.
【００４０】（比較例２）エチレンビスステアリン酸ア
ミドの代わりにαメチルスチレン樹脂３重量部を添加し
た以外は実施例４と同様の表面保護フイルムを得た。Comparative Example 2 A surface protective film similar to that of Example 4 was obtained except that 3 parts by weight of α-methylstyrene resin was added instead of ethylenebisstearic acid amide.
【００４１】（比較例３）αメチルスチレン樹脂の添加
量を１４０重量部とした以外は実施例３と同様の表面保
護フイルムを得た。(Comparative Example 3) A surface protective film similar to that of Example 3 was obtained except that the addition amount of the α-methylstyrene resin was 140 parts by weight.
【００４２】（比較例４）αメチルスチレン樹脂の代わ
りにエチレンビスステアリン酸アミドを０．０３重量部
添加した以外は実施例２と同様の表面保護フイルムを得
た。Comparative Example 4 A surface protective film similar to that of Example 2 was obtained except that 0.03 parts by weight of ethylenebisstearic acid amide was added instead of the α-methylstyrene resin.
【００４３】（比較例５）エチレンビスステアリン酸ア
ミドの添加量を８重量部とした以外は実施例４と同様の
表面保護フイルムを得た。Comparative Example 5 A surface protective film similar to that of Example 4 was obtained except that the amount of ethylenebisstearic acid amide added was 8 parts by weight.
【００４４】（比較例６）エチレンビスステアリン酸ア
ミドを８重量部更に添加した以外は比較例２と同様の表
面保護フイルムを得た。Comparative Example 6 A surface protective film similar to Comparative Example 2 was obtained except that 8 parts by weight of ethylenebisstearic acid amide was further added.
【００４５】（比較例７）エチレンビスステアリン酸ア
ミドの添加量を８重量部とし、ポリエチレンイミンを
０．０３重量部更に添加した以外は比較例４と同様の表
面保護フイルムを得た。(Comparative Example 7) A surface protective film similar to that of Comparative Example 4 was obtained except that the amount of ethylenebisstearic acid amide added was 8 parts by weight and 0.03 part by weight of polyethyleneimine was further added.
【００４６】（比較例８）エチレンビスステアリン酸ア
ミドの添加量を８重量部とし、ポリエチレンイミンの添
加量を４重量部とした以外は実施例１２と同様の表面保
護フイルムを得た。Comparative Example 8 A surface protective film similar to that of Example 12 was obtained except that the amount of ethylenebisstearic acid amide added was 8 parts by weight and the amount of polyethyleneimine added was 4 parts by weight.
【００４７】（比較例９）エチレンビスステアリン酸ア
ミドを８重量部、ポリエチレンイミンを３重量部更に添
加した以外は比較例２と同様の表面保護フイルムを得
た。Comparative Example 9 A surface protective film similar to Comparative Example 2 was obtained except that 8 parts by weight of ethylenebisstearic acid amide and 3 parts by weight of polyethyleneimine were further added.
【００４８】（比較例１０）ポリエチレンイミンを０．
５重量部添加した以外は比較例１と同様の表面保護フイ
ルムを得た。(Comparative Example 10) Polyethyleneimine was added to 0.
A surface protective film similar to that of Comparative Example 1 was obtained except that 5 parts by weight was added.
【００４９】[0049]
【表１】 [Table 1]
【００５０】[0050]
【表２】 [Table 2]
【００５１】上記各実施例及び各比較例の表面保護フイ
ルムについて、ステンレス板に貼り付けて２３℃で３０
分後と６０℃で３日経過後の接着力を測定した。又、ア
クリル樹脂塗装鋼板に対する接着力を、２３℃で３０分
経過後と、５００ｔｏｎ／ｍ2 で加圧した状態で７日後
の接着力を測定した。尚、上記接着力は、ＪＩＳ Ｚ０
２３７−８に準じて測定した。以上の結果を表３、表４
に示す。The surface protective film of each of the above-mentioned Examples and Comparative Examples was attached to a stainless steel plate, and it was heated at 23 ° C. for 30 minutes.
The adhesive strength was measured after a lapse of minutes and after 3 days at 60 ° C. Further, the adhesive strength to the acrylic resin-coated steel sheet was measured after a lapse of 30 minutes at 23 ° C. and after 7 days under a pressure of 500 ton / m 2 . In addition, the above-mentioned adhesive force is JIS Z0.
It measured according to 237-8. The above results are shown in Table 3 and Table 4.
Shown in.
【００５２】[0052]
【表３】 [Table 3]
【００５３】[0053]
【表４】 [Table 4]
【００５４】表３から判るように、各実施例のものは適
度な粘着力を備えている一方、経時後に２０ｍ／分とい
う高速で剥離することができるので、使用後の剥離が非
常に容易である。これに対して表４から明らかなよう
に、比較例１，２，４，１０のものは適度の粘着力を有
するが、いずれも経時後において高速剥離力が非常に大
きく、使用後の剥離が容易でなく、場合によってはフイ
ルムが切れたりする。又、比較例３，５〜９のものは、
剥離性を与える物質を大量に含むので粘着力が極めて低
く、表面保護フイルムとして実用に供することはできな
い。As can be seen from Table 3, each of the examples has an appropriate adhesive force, but can be peeled off at a high speed of 20 m / min after aging, so that peeling after use is very easy. is there. On the other hand, as is clear from Table 4, Comparative Examples 1, 2, 4 and 10 have an appropriate adhesive force, but all have a very high high-speed peeling force after aging and peeling after use It is not easy, and sometimes the film is cut off. Further, in Comparative Examples 3 and 5 to 9,
Since it contains a large amount of a substance that imparts releasability, the adhesive strength is extremely low, and it cannot be put to practical use as a surface protective film.
【００５５】[0055]
【発明の効果】本発明表面保護フイルムは以上の構成で
あり、これにより金属板、アクリル塗装鋼板に対する表
面保護フイルムとしてすぐれた接着性、剥離性、特に高
速剥離性を示すものである。EFFECTS OF THE INVENTION The surface protective film of the present invention has the above-mentioned constitution, and by virtue of this, it exhibits excellent adhesiveness, releasability, and particularly high speed releasability as a surface protective film to a metal plate or an acrylic coated steel plate.
【００５６】請求項１記載の表面保護フイルムは、粘着
剤層の適度の初期接着力を維持しながら剥離性を付与
し、加圧状態でも経時後の接着力亢進が小さいので被着
体に糊残りなく剥離でき、且つ、高速剥離性にすぐれ
る。The surface protective film according to claim 1 imparts releasability while maintaining an appropriate initial adhesive force of the pressure-sensitive adhesive layer, and the adhesive force does not easily increase after lapse of time even in a pressurized state, so that it can be adhered to an adherend. Can be peeled without leaving any residue and has excellent high-speed peelability.
【００５７】更に、請求項２記載の表面保護フイルムに
よると、請求項１記載の表面保護フイルムの粘着剤層
に、更に高級アルキル基の導入されたポリエチレンイミ
ンが０．０５〜５重量部添加されるので初期接着力及び
加圧状態で経時後の接着力亢進は殆どなく、被着体を粘
着剤で汚すことなく剥離することができ、且つ、一層す
ぐれた高速剥離性が得られる。Further, according to the surface protective film of claim 2, 0.05 to 5 parts by weight of polyethyleneimine having a higher alkyl group introduced is added to the pressure-sensitive adhesive layer of the surface protective film of claim 1. Therefore, there is almost no increase in the initial adhesive force and the adhesive force after lapse of time in the pressurized state, the adherend can be peeled without being soiled with an adhesive, and further excellent high-speed peelability can be obtained.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｊ 7/02 ＪＬＦ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location C09J 7/02 JLF
Claims (2)
ムの片面に粘着剤層が設けられてなる表面保護フイルム
において、上記粘着剤層が一般式Ａ−Ｂ−Ａで表される
ブロック共重合体及び一般式Ａ−Ｂで表されるブロック
共重合体（但し、Ａはスチレン系重合体ブロック、Ｂは
ブタジエン重合体ブロック、イソプレン重合体ブロッ
ク、またはそれらを水素添加して得られるオレフィン重
合体ブロックである）１００重量部に対し、脂肪族系石
油樹脂、脂環族系水添石油樹脂、芳香族系石油樹脂、Ｃ
5 系石油樹脂、テルペン樹脂、テルペン・フェノール樹
脂、クマロン・インデン樹脂、ロジン樹脂から選ばれた
少なくとも１種類の樹脂０〜１２０重量部の他に、αメ
チルスチレン樹脂５〜１２０重量部及び／又は脂肪酸ア
ミド０．０５〜５重量部を含有する組成物からなること
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 polyolefin resin and a pressure-sensitive adhesive layer provided on one side thereof, wherein the pressure-sensitive adhesive layer is a block copolymer represented by the general formula A-B-A. A block copolymer represented by Formula AB (where A is a styrene polymer block, B is a butadiene polymer block, an isoprene polymer block, or an olefin polymer block obtained by hydrogenating them. ) 100 parts by weight of aliphatic petroleum resin, alicyclic hydrogenated petroleum resin, aromatic petroleum resin, C
In addition to 0 to 120 parts by weight of at least one resin selected from 5 petroleum resin, terpene resin, terpene / phenol resin, coumarone / indene resin, and rosin resin, α-methylstyrene resin 5 to 120 parts by weight and / or A surface protective film comprising a composition containing 0.05 to 5 parts by weight of a fatty acid amide.
剤層に、更に高級アルキル基の導入されたポリエチレン
イミンが０．０５〜５重量部添加された組成物からなる
ことを特徴とする表面保護フイルム。2. A surface comprising a pressure-sensitive adhesive layer of the surface protective film according to claim 1, which further contains 0.05 to 5 parts by weight of polyethyleneimine having a higher alkyl group introduced therein. Protective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6202027A JPH07224255A (en) | 1993-12-17 | 1994-08-26 | Surface-protective film |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5-317914 | 1993-12-17 | ||
| JP31791493 | 1993-12-17 | ||
| JP6202027A JPH07224255A (en) | 1993-12-17 | 1994-08-26 | Surface-protective film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07224255A true JPH07224255A (en) | 1995-08-22 |
Family
ID=26513147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6202027A Pending JPH07224255A (en) | 1993-12-17 | 1994-08-26 | Surface-protective film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07224255A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006052346A (en) * | 2004-08-13 | 2006-02-23 | Asahi Kasei Chemicals Corp | Heat-resistant styrene-based resin composition |
| WO2010084783A1 (en) * | 2009-01-26 | 2010-07-29 | 積水化学工業株式会社 | Surface protection film for prism sheet, and process for production thereof, and prism sheet with the film put thereon |
| JP2013121989A (en) * | 2011-06-15 | 2013-06-20 | Sekisui Chem Co Ltd | Pressure-sensitive adhesive composition and surface protecting film |
| JP2015028130A (en) * | 2013-01-31 | 2015-02-12 | 日東電工株式会社 | Adhesive composition and adhesive sheet |
-
1994
- 1994-08-26 JP JP6202027A patent/JPH07224255A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006052346A (en) * | 2004-08-13 | 2006-02-23 | Asahi Kasei Chemicals Corp | Heat-resistant styrene-based resin composition |
| WO2010084783A1 (en) * | 2009-01-26 | 2010-07-29 | 積水化学工業株式会社 | Surface protection film for prism sheet, and process for production thereof, and prism sheet with the film put thereon |
| JP4565058B2 (en) * | 2009-01-26 | 2010-10-20 | 積水化学工業株式会社 | SURFACE PROTECTIVE FILM FOR PRISM SHEET, MANUFACTURING METHOD THEREOF, AND PRISM SHEET Attached To It |
| CN102292655A (en) * | 2009-01-26 | 2011-12-21 | 积水化学工业株式会社 | Surface protection film for prism sheet, and process for production thereof, and prism sheet with the film put thereon |
| JPWO2010084783A1 (en) * | 2009-01-26 | 2012-07-19 | 積水化学工業株式会社 | SURFACE PROTECTIVE FILM FOR PRISM SHEET, MANUFACTURING METHOD THEREOF, AND PRISM SHEET Attached To It |
| JP2013121989A (en) * | 2011-06-15 | 2013-06-20 | Sekisui Chem Co Ltd | Pressure-sensitive adhesive composition and surface protecting film |
| JP2015028130A (en) * | 2013-01-31 | 2015-02-12 | 日東電工株式会社 | Adhesive composition and adhesive sheet |
| JP2018053269A (en) * | 2013-01-31 | 2018-04-05 | 日東電工株式会社 | Adhesive composition and adhesive sheet |
| JP2020073703A (en) * | 2013-01-31 | 2020-05-14 | 日東電工株式会社 | Adhesive composition and adhesive sheet |
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