SURFACE PROTECTION FILM - SEKISUI CHEMICAL CO LTD

Title:

SURFACE PROTECTION FILM

Document Type and Number:

WIPO Patent Application WO/2006/132183

Kind Code:

A1

Abstract:

Disclosed is a surface protection film which has excellent initial adhesion and can be easily removed from an object to which it is adhered. The adhesive force of this surface protection film does not undesirably increase as time passes. Specifically disclosed is a surface protection film wherein a rubber adhesive layer is arranged on a polyolefin base. The rubber resin component is composed of a styrene elastomer which has a block copolymer of a styrene polymer block (A) and an olefin elastomer component (B), a block copolymer of a styrene polymer block (A) and a random copolymer block (B') of styrene and an elastomer component, or a hydrogenated product of either of the block copolymers as a main backbone. The rubber adhesive layer has a tensile storage modulus at a frequency of 10 Hz of not less than 2.5 × 10⁹ Pa at -100&ring C, and a shear storage modulus at a frequency of 10 Hz of from 5 × 10⁴ to 5 × 10⁶ Pa at 23&ring C.

Inventors:

TOYOSHIMA KATSUNORI (JP)
NOSETANI HAJIME (JP)
SHIMOURA YOSHIO (JP)

Application Number:

PCT/JP2006/311229

Publication Date:

December 14, 2006

Filing Date:

June 05, 2006

Export Citation:

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Assignee:

SEKISUI CHEMICAL CO LTD (JP)
TOYOSHIMA KATSUNORI (JP)
NOSETANI HAJIME (JP)
SHIMOURA YOSHIO (JP)

International Classes:

C09J7/22; C09J7/38; C09J153/02

Foreign References:

JP2000096019A	2000-04-04
JP2000144087A	2000-05-26
JP2000033671A	2000-02-02
JP2000204330A	2000-07-25

Other References: