SURFACE PROTECTIVE FILM

PROBLEM TO BE SOLVED: To provide a surface protective film having excellent adhesion characteristics, little contamination on an adherend, and easy releasing property when released from a roll state.SOLUTION: The surface protective film is obtained by co-extrusion molding and includes at least two l...

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Bibliographische Detailangaben
Hauptverfasser: TAKEISHI KAZUMICHI, INOUE NORIHIDE, WAKAGI HIROYUKI, OKODA HISAYUKI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a surface protective film having excellent adhesion characteristics, little contamination on an adherend, and easy releasing property when released from a roll state.SOLUTION: The surface protective film is obtained by co-extrusion molding and includes at least two layers of a surface layer (A) and an adhesive layer (X). The surface layer (A) is formed from a composition comprising 0 to 97 wt.% of a polyolefin resin (a-1) and 3 to 100 wt.% of an olefin copolymer (a-2) having a melting point of 200°C or lower and essentially comprising α-olefin having 4 or more carbon atoms (where the total of (a-1) and (a-2) is set to 100 wt.%). 【課題】粘着特性に優れ、被着体等への汚染が少なく、ロール状から繰出す際の繰出し性が容易である表面保護フィルムを提供する。【解決手段】共押出成形により得られ、表面層(A)及び粘着層(X)の少なくとも2層からなる表面保護フィルムであり、表面層(A)がポリオレフィン樹脂(a−1)0〜97重量%及び、融点が200℃以下である、炭素数4以上のα−オレフィンを主成分とするオレフィン共重合体(a−2)3〜100重量%((a−1)及び(a−2)の合計を100重量%とする。)からなる組成物から形成されることを特徴とする表面保護フィルム。【選択図】なし