JPH09217046A - Surface protecting film - Google Patents
Surface protecting filmInfo
- Publication number
- JPH09217046A JPH09217046A JP2516896A JP2516896A JPH09217046A JP H09217046 A JPH09217046 A JP H09217046A JP 2516896 A JP2516896 A JP 2516896A JP 2516896 A JP2516896 A JP 2516896A JP H09217046 A JPH09217046 A JP H09217046A
- Authority
- JP
- Japan
- Prior art keywords
- polymer block
- block copolymer
- copolymer represented
- layer
- block
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、表面保護フィルム
に関するものである。[0001] The present invention relates to a surface protection film.
【０００２】[0002]
【従来の技術】合成樹脂板、化粧合板、金属板、塗装鋼
板等の表面に仮着し、これら被着体の加工時や搬送、保
管時の傷防止や汚れ防止のために、可塑化塩化ビニル樹
脂やポリオレフィン樹脂からなる基材フィルムの一面に
粘着層が設けられてなる表面保護フィルムが汎用される
ようになってきている。上記表面保護フィルムは、上記
被着体の加工時や搬送、保管時には上記被着体に密着し
ており、不要となったならば、上記被着体の表面に粘着
層の一部を残すことなく容易に剥離することのできる適
度の粘着性が要求される。2. Description of the Related Art Temporarily adhered to surfaces of synthetic resin plates, decorative plywood, metal plates, painted steel plates, etc., to prevent scratches and stains during the processing, transportation and storage of these adherends BACKGROUND ART A surface protective film in which an adhesive layer is provided on one surface of a base film made of a vinyl resin or a polyolefin resin has been widely used. The surface protective film is in close contact with the adherend during processing, transportation, and storage of the adherend, and when it becomes unnecessary, leave a part of the adhesive layer on the surface of the adherend. It is required to have an appropriate tackiness that can be easily peeled off.
【０００３】上記表面保護フィルムとして、例えば、特
公昭５８−３０９１１号公報、特公昭６１−１０３９７
５号公報等に、ポリオレフィン樹脂等の熱可塑性樹脂か
らなる基材層の片面に、一般式Ａ−Ｂ−Ａ（但し、一般
式中、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、又は、こ
れらを水素添加して得られるオレフィン系重合体ブロッ
クを示す）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を混和してなる粘着剤層が
形成された表面保護フィルムが開示されている。Examples of the surface protective film include, for example, Japanese Patent Publication No. 58-30911 and Japanese Patent Publication No. 61-10397.
No. 5, etc., on one surface of a base material layer made of a thermoplastic resin such as a polyolefin resin, a general formula A-B-A (in the general formula, A is a styrene polymer block and B is a butadiene polymer block) is disclosed. , An isoprene polymer block, or an olefinic polymer block obtained by hydrogenating these) shows a block copolymer elastomer alone or a pressure-sensitive adhesive layer formed by admixing a tackifier resin with the block copolymer elastomer. The disclosed surface protection film is disclosed.
【０００４】しかし、上記特公昭５８−３０９１１号公
報や特公昭６１−１０３９７５号公報に開示されている
表面保護フィルムは、ステンレス鋼板、アルミニウム板
等の金属板、ポリエステル系樹脂塗装鋼板、アクリル系
樹脂塗装鋼板等に貼り付けた後の接着昂進が激しく、特
に加熱を伴う用途においては、しばしば剥離不可能とな
ることがある。However, the surface protection film disclosed in Japanese Patent Publication No. 58-30911 and Japanese Patent Publication No. 61-103975 is a metal plate such as a stainless steel plate or an aluminum plate, a polyester resin coated steel plate, an acrylic resin. Adhesion progresses strongly after sticking to a coated steel plate or the like, and sometimes peeling becomes impossible in particular in applications involving heating.
【０００５】又、特開平１−１２９０８５号公報には、
一般式Ａ−Ｂ−Ａ（但し、一般式中、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、又は、これらを水素添加して得ら
れるオレフィン系重合体ブロックを示す）で表されるブ
ロック共重合体、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層が形成され
た表面保護フィルムが開示されている。Further, Japanese Patent Laid-Open No. 1-129085 discloses that
Formula A-B-A (wherein A is a styrene polymer block, B is a butadiene polymer block, an isoprene polymer block, or an olefin polymer block obtained by hydrogenating these). Of the block copolymer, the tackifying resin, and the higher alkyl group-introduced polyethyleneimine are formed on the surface protective film.
【０００６】上記特開平１−１２９０８５号公報に開示
されている表面保護フィルムのステンレス鋼板、アルミ
ニウム板等の金属板等に対する剥離性は、上記特公昭５
８−３０９１１号公報や特公昭６１−１０３９７５号公
報に開示されている表面保護フィルムのそれに比較して
改善されてはいるものの十分ではなく、これは粘着剤層
に添加される高級アルキル基の導入されたポリエチレン
イミンが、本来、ステンレス鋼板、アルミニウム板、各
種塗装鋼板等の被着体に貼付された後、上記被着体と粘
着剤層の界面に必要量がブリードしてきて、該粘着面に
おける接着昂進を抑制することを意図しているが、そも
そも高級アルキル基の導入されたポリエチレンイミン
は、高温でのブリードアウトが顕著なため、例えば、共
押出成形法によって上記表面保護フィルムが成形される
際にブリードしてきて、冷却ロールや各種ガイドにプレ
ーティングアウトしたり、保管中にブリードしてきて、
粘着剤層表面の濃度が高まって表面保護フィルムの初期
粘着力を低下し、使用途上で剥離してきたり、逆に、上
記プレーティングアウトや保管中の自背面に取られてし
まって剥離性機能が低下し、粘着昂進の抑制効果が失わ
れてしまう等、安定性に乏しいものであった。The releasability of the surface protective film disclosed in JP-A No. 1-129085 from a metal plate such as a stainless steel plate or an aluminum plate is described in the above-mentioned JP-B-5.
Although it has been improved as compared with that of the surface protective film disclosed in JP-A-8-30911 and JP-B-61-103975, it is not sufficient, and this is the introduction of a higher alkyl group added to the pressure-sensitive adhesive layer. The polyethyleneimine thus obtained was originally adhered to an adherend such as a stainless steel plate, an aluminum plate, or various coated steel plates, and then a necessary amount of bleeding was observed at the interface between the adherend and the pressure-sensitive adhesive layer. Although it is intended to suppress the progress of adhesion, since the bleed-out at a high temperature is remarkable in the polyethyleneimine in which a higher alkyl group is introduced in the first place, for example, the surface protective film is formed by a coextrusion molding method. When bleeding out, plating out on cooling rolls or various guides, or bleeding during storage,
The concentration of the surface of the pressure-sensitive adhesive layer increases and the initial adhesive strength of the surface protective film decreases, and it peels off during use, or conversely, it is peeled off on the back side during plating out or during storage, resulting in a peeling function. It was poor in stability, for example, the effect of suppressing adhesion promotion was lost.
【０００７】[0007]
【発明が解決しようとする課題】本発明は叙上の事実に
鑑みなされたものであって、その目的とするところは、
表面保護フィルムの接着昂進を効果的に抑制すると共
に、初期粘着力の低下を防止した表面保護フィルムを提
供するにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and its object is to:
Another object of the present invention is to provide a surface protective film which effectively suppresses the adhesion promotion of the surface protective film and prevents the initial adhesive force from decreasing.
【０００８】[0008]
【課題を解決するための手段】本発明は、一般式Ａ−Ｂ
−Ａで表されるブロック共重合体又は一般式Ａ−Ｂ−Ａ
で表されるブロック共重合体と一般式Ａ−Ｂで表される
ブロック共重合体の混合物（但し、一般式中、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、又は、これらを水素添
加して得られるオレフィン系重合体ブロックを示す）を
主成分とする粘着剤層と、ポリオレフィン系樹脂からな
る表面層とを、長鎖アルキル基の付加された高分子量物
質、脂肪酸アミドの群から選ばれるブリード性添加物の
一種以上を含有するポリオレフィン系樹脂からなる内層
を介して相互に積層してなることを特徴とする表面保護
フィルムをその要旨とするものである。The present invention is of general formula AB
A block copolymer represented by -A or the general formula A-B-A
A mixture of the block copolymer represented by the following formula and the block copolymer represented by the general formula AB (wherein A is a styrene polymer block, B is a butadiene polymer block, isoprene polymer block). , Or an olefin-based polymer block obtained by hydrogenating these) as a main component, and a surface layer made of a polyolefin-based resin, a high-molecular-weight substance having a long-chain alkyl group added thereto. The gist of the invention is to provide a surface protective film, which is laminated with an inner layer made of a polyolefin-based resin containing one or more bleeding additives selected from the group of fatty acid amides on each other.
【０００９】本発明に用いられるポリオレフィン系樹脂
は、特に限定されるものではないが、例えば、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、直鎖状低密度ポリエチレン、ポリプロピレン（単独
重合体、ランダム共重合体、ブロック共重合体）、エチ
レン−プロピレン共重合体、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−ｎ−ブ
チルアクリレート共重合体、エチレン−メチルメタクリ
レート共重合体、エチレン−酢酸ビニル共重合体等が挙
げられる。上記ポリオレフィン系樹脂は、表面層と内層
で必ずしも同一でなくてよく、又、２種以上が適宜混合
されて用いられてもよい。The polyolefin resin used in the present invention is not particularly limited, but for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene (homopolymer, random polymer Copolymer, block copolymer), ethylene-propylene copolymer, ethylene-α-olefin copolymer, propylene-α-olefin copolymer, ethylene-ethyl acrylate copolymer, ethylene-n-butyl acrylate copolymer Examples thereof include polymers, ethylene-methyl methacrylate copolymers, ethylene-vinyl acetate copolymers and the like. The above-mentioned polyolefin-based resin does not necessarily have to be the same in the surface layer and the inner layer, and two or more kinds may be appropriately mixed and used.
【００１０】本発明に用いられる一般式Ａ−Ｂ−Ａ（但
し、一般式中、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、
又は、これらを水素添加して得られるオレフィン系重合
体ブロックを示す）で表されるブロック共重合体は、ス
チレン系重合体ブロックＡが平均分子量４０００〜１１
５０００程度のものが好ましく、更に、８０００〜６０
０００程度のものがより好ましい。又、そのガラス転移
温度は、２０℃以上のものが好ましい。General formula A-B-A used in the present invention (wherein A is a styrene polymer block, B is a butadiene polymer block, isoprene polymer block,
Or a block copolymer represented by an olefin polymer block obtained by hydrogenating these), the styrene polymer block A has an average molecular weight of 4000 to 11
5,000 is preferable, and further 8000-60
About 000 is more preferable. The glass transition temperature is preferably 20 ° C. or higher.
【００１１】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、又は、これらを水素添加して得られ
るオレフィン系重合体ブロックＢは、平均分子量２００
００〜４５００００程度のものが好ましく、更に、５０
０００〜３０００００程度のものがより好ましい。又、
そのガラス転移温度は、−２０℃以下のものが好まし
い。The butadiene polymer block, the isoprene polymer block, or the olefin polymer block B obtained by hydrogenating these is an average molecular weight of 200.
It is preferably about 00 to 450,000, and further 50
000-300000 is more preferable. or,
The glass transition temperature is preferably −20 ° C. or lower.
【００１２】上記ブロック共重合体におけるＡ成分とＢ
成分の好ましい比率は、重量比Ａ／Ｂで２／９８〜５０
／５０であり、更に好ましくは５／９５〜３０／７０で
ある。又、一般式Ａ−Ｂ−Ａで表されるブロック共重合
体と一般式Ａ−Ｂで表されるブロック共重合体との好ま
しい比率は、重量比（Ａ−Ｂ−Ａ）／（Ａ−Ｂ）で１０
０／０〜２０／８０であり、更に好ましくは１００／０
〜５０／５０である。A component and B in the above block copolymer
The preferable ratio of the components is 2/98 to 50 by weight ratio A / B.
/ 50, and more preferably 5/95 to 30/70. Further, the preferable ratio of the block copolymer represented by the general formula ABA to the block copolymer represented by the general formula A-B is a weight ratio (ABA) / (A- 10 in B)
0/0 to 20/80, more preferably 100/0
５０50/50.
【００１３】上記粘着剤には、必要に応じて粘着付与樹
脂が添加されてもよいが、該粘着付与樹脂は、例えば、
脂肪族系石油樹脂、テルペン樹脂、クマロン−インデン
樹脂、芳香族系石油樹脂、ロジン樹脂、肪環族系石油樹
脂等が好適に用いられる。If desired, a tackifying resin may be added to the above-mentioned pressure-sensitive adhesive.
Aliphatic petroleum resin, terpene resin, coumarone-indene resin, aromatic petroleum resin, rosin resin, alicyclic petroleum resin and the like are preferably used.
【００１４】又、上記粘着付与樹脂の添加量は、上記ブ
ロック共重合体１００重量部に対して０〜１２０重量部
程度が好ましく、更に好ましくは５〜６０重量部であ
る。上記粘着付与樹脂の添加量が、１２０重量部を超え
るて多くなると、上記粘着剤層の凝集力が低下し、この
ような表面保護フィルムは、これを貼付した被着体から
剥離する際に糊残りを生ずる。The amount of the tackifying resin added is preferably about 0 to 120 parts by weight, more preferably 5 to 60 parts by weight, based on 100 parts by weight of the block copolymer. When the amount of the tackifying resin added exceeds 120 parts by weight, the cohesive force of the pressure-sensitive adhesive layer decreases, and such a surface protective film is a paste when it is peeled from the adherend to which it is attached. Produces the rest.
【００１５】上記長鎖アルキル基の付加された高分子量
物質における長鎖アルキル基とは、炭素数８以上のアル
キル基を意味し、高分子量物質とは、平均分子量が１０
００以上の高分子量物質を意味し、好ましくは平均分子
量１０００〜５００００程度のものをいう。上記長鎖ア
ルキル基の付加された高分子量物質としては、側鎖に上
記長鎖アルキル基の付加されたものであれば特に限定さ
れるものではないが、例えば、ポリエチレンイミンのオ
クタデシルイソシアネート付加物等のポリエチレンイミ
ンの長鎖アルキル付加物、ポリビニルアルコールのオク
タデシルイソシアネート付加物等のポリビニルアルコー
ルの長鎖アルキル付加物、ポリアクリル酸オクタデシル
エステル等のアクリル酸の長鎖アルキルエステルの重合
物等が挙げられる。The long-chain alkyl group in the above-mentioned high-molecular weight substance to which a long-chain alkyl group is added means an alkyl group having 8 or more carbon atoms, and the high-molecular weight substance has an average molecular weight of 10
It means a high molecular weight substance having a molecular weight of 00 or more, and preferably an average molecular weight of about 1,000 to 50,000. The long-chain alkyl group-added high molecular weight substance is not particularly limited as long as the long-chain alkyl group is added to the side chain, for example, polyethyleneimine octadecyl isocyanate adduct and the like. Polyethyleneimine long chain alkyl adducts, polyvinyl alcohol octadecyl isocyanate adducts and other polyvinyl alcohol long chain alkyl adducts, polyacrylic acid octadecyl esters and other acrylic acid long chain alkyl ester polymers, and the like.
【００１６】上記脂肪酸アミドとしては、一般式Ｃn Ｈ
2n+1ＣＯＮＨ2 （ｎ＝１０〜２１）、Ｃn Ｈ2n-1ＣＯＮ
Ｈ2 （ｎ＝１５〜２１）、Ｃn Ｈ2n+1ＣＯＮＨ（Ｃ
Ｈ2 ）mＮＨＣＯＣn Ｈ2n+1（ｎ＝１５〜２１、ｍ＝１
〜８）、Ｃn Ｈ2n-1ＣＯＮＨ（ＣＨ2 ）m ＮＨＣＯＣn
Ｈ2n-1（ｎ＝１５〜２１、ｍ＝１〜８）で表される脂肪
酸アミド類の群から選ばれた少なくとも１種類を示し、
例えば、ステアリルアミド、オレイルアミド、ラウリル
アミド、エチレンビスステアリルアミド、Ｎ，Ｎ’−メ
チレンビスステアロアミド等が挙げられる。The above-mentioned fatty acid amide has the general formula C n H
2n + 1 CONH 2 (n = 10 to 21), C n H 2n-1 CON
H 2 (n = 15 to 21), C n H 2n + 1 CONH (C
H 2 ) m NHCOC n H 2n + 1 (n = 15 to 21, m = 1
~8), C n H 2n- 1 CONH (CH 2) m NHCOC n
At least one selected from the group of fatty acid amides represented by H 2n-1 (n = 15 to 21, m = 1 to 8),
For example, stearyl amide, oleyl amide, lauryl amide, ethylene bis stearyl amide, N, N′-methylene bis stearamide and the like can be mentioned.
【００１７】上記長鎖アルキル基の付加された高分子量
物質、脂肪酸アミドの群から選ばれるブリード性添加物
の添加量は、好ましくは内層に用いられるポリオレフィ
ン系樹脂１００重量部に対し０．０１〜５重量部であ
る。The amount of the bleeding additive selected from the group consisting of the above-mentioned long-chain alkyl group-added high molecular weight substances and fatty acid amides is preferably 0.01 to 100 parts by weight of the polyolefin resin used for the inner layer. 5 parts by weight.
【００１８】本発明の表面保護フィルムにおいて、上記
内層に加えて、粘着剤層にも上記長鎖アルキル基の付加
された高分子量物質、脂肪酸アミドの群から選ばれるブ
リード性添加物の一種以上を添加してよいが、上記粘着
剤層に添加される上記ブリード性添加物の添加量は、好
ましくは粘着剤層形成成分１００重量部に対し５重量部
以下である。上記内層及び粘着剤層への上記ブリード性
添加物の添加量が５重量部を超えると初期粘着力が低く
なり過ぎ、被着体に貼り付け難くなる。In the surface protective film of the present invention, in addition to the above-mentioned inner layer, the pressure-sensitive adhesive layer is also provided with one or more bleeding additives selected from the group of high molecular weight substances having a long-chain alkyl group and fatty acid amide. Although it may be added, the amount of the bleeding additive added to the pressure-sensitive adhesive layer is preferably 5 parts by weight or less based on 100 parts by weight of the pressure-sensitive adhesive layer-forming component. When the amount of the bleeding additive added to the inner layer and the pressure-sensitive adhesive layer exceeds 5 parts by weight, the initial adhesive force becomes too low and it becomes difficult to attach the adherend to an adherend.
【００１９】上記ポリオレフィン系樹脂からなる表面層
と、上記ブリード性添加物の一種以上を含有するポリオ
レフィン系樹脂からなる内層とからなる上記粘着剤層の
基材の厚さは、用いられる被着体の種類、表面保護フィ
ルムを仮着した状態での被着体の打抜き、曲げ、成形等
の加工の有無、上記加工の種類によって適宜設定される
が、一般に、４０〜２００μｍ程度に設定される。上記
基材の表面層と内層の厚さ比率（表面層）／（内層）
は、好ましくは１／２０〜１／１程度である。The thickness of the base material of the pressure-sensitive adhesive layer, which is composed of the surface layer made of the polyolefin resin and the inner layer made of the polyolefin resin containing one or more of the bleeding additives, is the adherend to be used. It is appropriately set depending on the type, the presence or absence of processing such as punching, bending, and molding of the adherend with the surface protection film temporarily attached, and the type of the above processing, but it is generally set to about 40 to 200 μm. Thickness ratio of surface layer to inner layer of the above base material (surface layer) / (inner layer)
Is preferably about 1/20 to 1/1.
【００２０】上記粘着剤層の厚さは、前記基材と同様に
表面保護フィルムの用途によって適宜設定されるが、一
般に、２〜３０μｍ程度に設定される。又、上記基材
（表面層、内層）及び粘着剤層には、上記配合物の他、
本発明の精神を逸脱せざる範囲において、更に必要に応
じて酸化防止剤、紫外線吸収剤、光安定剤、着色剤、充
填剤等が配合されてもよい。The thickness of the pressure-sensitive adhesive layer is appropriately set depending on the use of the surface protective film as in the case of the base material, but is generally set to about 2 to 30 μm. In addition to the above-mentioned composition, the above-mentioned base material (surface layer, inner layer) and pressure-sensitive adhesive layer are
An antioxidant, an ultraviolet absorber, a light stabilizer, a colorant, a filler and the like may be further added, if necessary, within a range not departing from the spirit of the present invention.
【００２１】[0021]
【発明の実施の形態】以下、本発明の実施例を説明す
る。Embodiments of the present invention will be described below.
【００２２】（実施例１）粘着層として、スチレン−ブ
タジエン−スチレンブロック共重合体（ＳＢＳ）の水素
添加物（シェル化学社製、商品名：クレイトンＧ１６５
７）１００重量部に粘着付与樹脂（荒川化学社製、商品
名：アルコンＰ−１００）２０重量部を配合したものを
１０μｍ、表面層として低密度ポリエチレン（三井石油
化学社製、商品名：ミラソン１２）１０μｍ、上記両層
の間の内層として、上記低密度ポリエチレン１００重量
部にポリエチレンイミンのオクタデシルイソシアネート
付加物１重量部を配合したものを４０μｍとなるよう、
Ｔダイによる３層共押出法によって表面保護フィルムを
作製した。(Example 1) As an adhesive layer, a hydrogenated product of styrene-butadiene-styrene block copolymer (SBS) (manufactured by Shell Chemical Co., trade name: Kraton G165.
7) 10 μm of 100 parts by weight of 20 parts by weight of tackifying resin (Arakawa Chemical Co., Ltd., trade name: Alcon P-100), low density polyethylene as a surface layer (Mitsui Petrochemical Co., Ltd., trade name: Mirason 12) 10 μm, and as an inner layer between the both layers, a mixture of 100 parts by weight of the low-density polyethylene with 1 part by weight of an octadecyl isocyanate adduct of polyethyleneimine is adjusted to 40 μm,
A surface protection film was produced by a three-layer coextrusion method using a T-die.
【００２３】（実施例２）実施例１の内層のポリエチレ
ンイミンのオクタデシルイソシアネート付加物に替え
て、ステアリルアミド１重量部を用いたこと以外、実施
例１と同様にして表面保護フィルムを作製した。Example 2 A surface protective film was produced in the same manner as in Example 1 except that 1 part by weight of stearylamide was used in place of the octadecyl isocyanate adduct of polyethyleneimine in the inner layer of Example 1.
【００２４】（実施例３）実施例１の内層のポリエチレ
ンイミンのオクタデシルイソシアネート付加物の配合量
１重量部を０．５重量部に変更し、実施例１の粘着剤層
に上記ポリエチレンイミンのオクタデシルイソシアネー
ト付加物０．５重量部を添加したこと以外、実施例１と
同様にして表面保護フィルムを作製した。Example 3 The content of the octadecyl isocyanate adduct of polyethyleneimine in the inner layer of Example 1 was changed from 1 part by weight to 0.5 part by weight, and the above-mentioned polyethyleneimine octadecyl was added to the pressure-sensitive adhesive layer of Example 1. A surface protective film was produced in the same manner as in Example 1 except that 0.5 part by weight of the isocyanate adduct was added.
【００２５】（比較例１）実施例１の内層を設けず（基
材は表面層のみ）、表面層の厚さを５０μｍとし、その
他実施例１と同構成とし、Ｔダイによる２層共押出法に
よって表面保護フィルムを作製した。(Comparative Example 1) The inner layer of Example 1 was not provided (the surface layer was the only base material), the thickness of the surface layer was 50 μm, the same structure as in Example 1 was used, and two layers were coextruded by a T-die. The surface protection film was produced by the method.
【００２６】（比較例２）実施例３の内層を設けず（基
材は表面層のみ）、表面層の厚さを５０μｍとし、実施
例３の粘着剤層のポリエチレンイミンのオクタデシルイ
ソシアネート付加物の添加量を、０．５重量部から１重
量部に変更し、その他実施例３と同構成とし、比較例１
と同様にＴダイによる２層共押出法によって表面保護フ
ィルムを作製した。(Comparative Example 2) The inner layer of Example 3 was not provided (the substrate was the surface layer only), the thickness of the surface layer was 50 μm, and the polyethyleneimine octadecyl isocyanate adduct of the adhesive layer of Example 3 was used. The amount of addition was changed from 0.5 parts by weight to 1 part by weight, and the same composition as in Example 3 was used, and Comparative Example 1
Similarly to the above, a surface protection film was produced by a two-layer coextrusion method using a T-die.
【００２７】（比較例３）実施例１の内層を設けず（基
材は表面層のみ）、表面層の厚さを５０μｍとし、該表
面層にポリエチレンイミンのオクタデシルイソシアネー
ト付加物１重量部を添加したこと以外、実施例１と同構
成とし、比較例１と同様にＴダイによる２層共押出法に
よって表面保護フィルムを作製した。(Comparative Example 3) The inner layer of Example 1 was not provided (the surface layer was the only base material), the thickness of the surface layer was 50 μm, and 1 part by weight of an octadecyl isocyanate adduct of polyethyleneimine was added to the surface layer. Aside from the above, the same structure as in Example 1 was used, and in the same manner as in Comparative Example 1, a surface protection film was produced by a two-layer coextrusion method using a T-die.
【００２８】上記実施例及び比較例で得られた表面保護
フィルムの製造直後及び加熱保管後（４０℃×２週間）
のサンプルについて、粘着力、経時剥離力及び汚染性を
以下に示す方法で測定、評価した。測定、評価結果は表
１に示した。Immediately after the production of the surface protective films obtained in the above Examples and Comparative Examples and after heat storage (40 ° C. × 2 weeks)
The adhesive strength, time-dependent peeling strength, and stain resistance of the sample (1) were measured and evaluated by the following methods. The measurement and evaluation results are shown in Table 1.
【００２９】１．粘着力：ＪＩＳ Ｚ ０２３７−８
（粘着テープ・粘着シート試験方法）に準じて、ステン
レス鋼板（ＳＵＳ３０４ＢＡ）に対する粘着力を測定し
た。測定値の単位は、ｇ／２５ｍｍ。1. Adhesive strength: JIS Z 0237-8
According to (Adhesive tape / adhesive sheet test method), the adhesive force to a stainless steel plate (SUS304BA) was measured. The unit of measurement value is g / 25 mm.
【００３０】２．経時剥離力：ステンレス鋼板（ＳＵＳ
３０４ＢＡ）に試料表面保護フィルムを貼付け、４０℃
×２週間加熱経時させ、室温にまで冷却し、充分養生し
た後、ＪＩＳ Ｚ ０２３７−８に準じて経時剥離力を
測定した。測定値の単位は、ｇ／２５ｍｍ。2. Peeling force over time: Stainless steel plate (SUS
304BA) with a sample surface protection film attached, 40 ℃
After heating and aging for 2 weeks, cooling to room temperature, and aging sufficiently, the time-dependent peeling force was measured according to JIS Z 0237-8. The unit of measurement value is g / 25 mm.
【００３１】３．汚染性：前項の試験後の被着体ステン
レス鋼板（ＳＵＳ３０４ＢＡ）の試料表面保護フィルム
剥離面を目視により観察し、○：曇りなし、△：僅かに
曇りがあるもの、×：明らかに汚染と判る曇りがあるも
の、の３段階で評価した。3. Contamination: Visually observing the peeled surface of the sample surface protective film of the adherend stainless steel plate (SUS304BA) after the test of the preceding paragraph, ○: no fog, Δ: slightly fog, ×: apparently contaminated It was evaluated on a three-point scale, that is, cloudy.
【００３２】[0032]
【表１】 [Table 1]
【００３３】上記実施例の表面保護フィルムは、製造直
後及び加熱保管後のいずれにおいても、粘着力、経時剥
離力及び汚染性のいずれの項目に就いても、問題となる
ところはなく、優れた性能を示した。比較例１の表面保
護フィルムは、製造直後に既に接着昂進が始まっており
製造直後及び加熱保管後のいずれにおいても、経時剥離
力が実用適正レベル上限の３００ｇ／２５ｍｍを超えて
おり、汚染性評価が悪くなっている。比較例２の表面保
護フィルムは、粘着剤層にブリード性添加物が配合され
てはいるが、やはり加熱保管後の表面保護フィルムは、
接着昂進が進み、経時剥離力が大きくなり、剥離しづら
くなっており、汚染性評価も悪くなっている。比較例３
の表面保護フィルムは、基材にブリード性添加物が配合
されているためか、常態での粘着力が低下しており経時
剥離力も小さい値を示すにも拘らず、糊残り等、汚染性
評価が悪くなっている。The surface protective films of the above-mentioned examples were excellent immediately after production and after heating and storage, no matter in terms of tackiness, peeling strength with time and stain resistance, no problem was found. The performance was shown. In the surface protective film of Comparative Example 1, the adhesion promotion has already started immediately after the production, and the peeling strength with time exceeds the practical proper level upper limit of 300 g / 25 mm both immediately after the production and after heating and storage. Is getting worse. In the surface protective film of Comparative Example 2, although the bleeding additive was blended in the pressure-sensitive adhesive layer, the surface protective film after heat storage was also
Adhesion progressed, the time-dependent peeling strength became large, and it became difficult to peel off, and the contamination evaluation was also poor. Comparative Example 3
Although the surface protective film of No. 1 has a bleeding additive added to the base material, the adhesive strength in the normal state is low and the peeling strength with time shows a small value, but the adhesive residue, stain resistance, etc. are evaluated. Is getting worse.
【００３４】[0034]
【発明の効果】本発明の表面保護フィルムは、叙上の如
く構成されているので、表面保護フィルムの製造条件、
流通・保管条件、在庫期間等の外的条件に余り影響を受
けることなく、被着体に貼付された後、ブリード性添加
物が有効にブリードし、その粘着力に影響することなく
接着昂進の抑制に効果的に作用する。又、基材表面層に
は、ブリード性添加物が成形に必要な極微量しか存在し
ないので流通・保管中に粘着力の低下をきたすことはな
い。Since the surface protective film of the present invention is constructed as described above, the manufacturing conditions of the surface protective film,
After being attached to the adherend, the bleeding additive effectively bleeds without being significantly affected by external conditions such as distribution / storage conditions and inventory period, and adhesion is promoted without affecting its adhesive strength. It works effectively for suppression. Moreover, since the bleeding additive is present in the base material surface layer in an extremely small amount necessary for molding, the adhesive strength does not decrease during distribution and storage.
───────────────────────────────────────────────────── 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 ＪＫＥ Ｃ０９Ｊ 7/02 ＪＫＥ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location C09J 7/02 JKE C09J 7/02 JKE
Claims (1)
重合体又は一般式Ａ−Ｂ−Ａで表されるブロック共重合
体と一般式Ａ−Ｂで表されるブロック共重合体の混合物
（但し、一般式中、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、又は、これらを水素添加して得られるオレフィン系
重合体ブロックを示す）を主成分とする粘着剤層と、ポ
リオレフィン系樹脂からなる表面層とを、長鎖アルキル
基の付加された高分子量物質、脂肪酸アミドの群から選
ばれるブリード性添加物の一種以上を含有するポリオレ
フィン系樹脂からなる内層を介して相互に積層してなる
ことを特徴とする表面保護フィルム。1. A block copolymer represented by the general formula ABA, or a block copolymer represented by the general formula ABA and a block copolymer represented by the general formula A-B. (Where A is a styrenic polymer block and B is a
Is a butadiene polymer block, an isoprene polymer block, or an olefin polymer block obtained by hydrogenating these) as a main component, and a surface layer made of a polyolefin resin. Surface protection characterized by being laminated on each other through an inner layer made of a polyolefin resin containing one or more bleeding additives selected from the group of high molecular weight substances having chain alkyl groups and fatty acid amides the film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2516896A JPH09217046A (en) | 1996-02-13 | 1996-02-13 | Surface protecting film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2516896A JPH09217046A (en) | 1996-02-13 | 1996-02-13 | Surface protecting film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09217046A true JPH09217046A (en) | 1997-08-19 |
Family
ID=12158484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2516896A Pending JPH09217046A (en) | 1996-02-13 | 1996-02-13 | Surface protecting film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09217046A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008056520A1 (en) * | 2006-11-07 | 2008-05-15 | Toyo Boseki Kabushiki Kaisha | Pressure sensitive adhesive film |
| JP2008274212A (en) * | 2007-03-30 | 2008-11-13 | Jsr Corp | Pressure-sensitive adhesive composition and surface-protecting film |
| JP2009191208A (en) * | 2008-02-15 | 2009-08-27 | Sekisui Chem Co Ltd | Manufacturing method of surface-protecting film |
| JP2012072206A (en) * | 2010-09-27 | 2012-04-12 | Nitto Denko Corp | Surface protective sheet |
| US8263713B2 (en) | 2009-10-13 | 2012-09-11 | Kraton Polymers U.S. Llc | Amine neutralized sulfonated block copolymers and method for making same |
| US8377514B2 (en) | 2008-05-09 | 2013-02-19 | Kraton Polymers Us Llc | Sulfonated block copolymer fluid composition for preparing membranes and membrane structures |
| JP2016169264A (en) * | 2015-03-11 | 2016-09-23 | 積水化学工業株式会社 | Surface protective film, and prism sheet with surface protective film |
| US9861941B2 (en) | 2011-07-12 | 2018-01-09 | Kraton Polymers U.S. Llc | Modified sulfonated block copolymers and the preparation thereof |
-
1996
- 1996-02-13 JP JP2516896A patent/JPH09217046A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008056520A1 (en) * | 2006-11-07 | 2008-05-15 | Toyo Boseki Kabushiki Kaisha | Pressure sensitive adhesive film |
| JP2008150581A (en) * | 2006-11-07 | 2008-07-03 | Toyobo Co Ltd | Self-adhesive film |
| JP2008274212A (en) * | 2007-03-30 | 2008-11-13 | Jsr Corp | Pressure-sensitive adhesive composition and surface-protecting film |
| JP2009191208A (en) * | 2008-02-15 | 2009-08-27 | Sekisui Chem Co Ltd | Manufacturing method of surface-protecting film |
| US8377514B2 (en) | 2008-05-09 | 2013-02-19 | Kraton Polymers Us Llc | Sulfonated block copolymer fluid composition for preparing membranes and membrane structures |
| US8377515B2 (en) | 2008-05-09 | 2013-02-19 | Kraton Polymers U.S. Llc | Process for preparing membranes and membrane structures from a sulfonated block copolymer fluid composition |
| US8263713B2 (en) | 2009-10-13 | 2012-09-11 | Kraton Polymers U.S. Llc | Amine neutralized sulfonated block copolymers and method for making same |
| JP2012072206A (en) * | 2010-09-27 | 2012-04-12 | Nitto Denko Corp | Surface protective sheet |
| US9861941B2 (en) | 2011-07-12 | 2018-01-09 | Kraton Polymers U.S. Llc | Modified sulfonated block copolymers and the preparation thereof |
| JP2016169264A (en) * | 2015-03-11 | 2016-09-23 | 積水化学工業株式会社 | Surface protective film, and prism sheet with surface protective film |
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