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Title:
SELF-ADHESIVE SURFACE-PROTECTING FILM
Document Type and Number:
WIPO Patent Application WO/2014/168069
Kind Code:
A1
Abstract:
A self-adhesive surface-protecting film characterized by being produced by laminating an adhesive layer on one surface of a base layer comprising a polypropylene resin and also laminating a release layer on the opposite surface of the base layer by co-extrusion, wherein the adhesive layer comprises a styrene elastomer (A) that is a hydrogenated product of a block copolymer of a styrene polymer block and a butadiene polymer block and has a styrene content of 5 to 40 wt% and a styrene elastomer (B) that is a hydrogenated product of a random copolymer of styrene and butadiene and has a styrene content of 40 to 70 wt%, the ratio of the weight of the styrene elastomer (A) to the total weight of the two styrene elastomers is 5 to 80 wt% inclusive, an adhesiveness-imparting resin is contained in an amount of 5 to 25 parts by weight relative to the sum total, i.e., 100 parts by weight, of the two styrene elastomers.

Inventors:
YAMAMOTO, Shigetomo (344, aza-Maehata, oaza-Kotsu, Inuyama-sh, Aichi 08, 〒4848508, JP)
OGI, Hirokazu (344, aza-Maehata, oaza-Kotsu, Inuyama-sh, Aichi 08, 〒4848508, JP)
MATSUDA, Akira (344, aza-Maehata, oaza-Kotsu, Inuyama-sh, Aichi 08, 〒4848508, JP)
Application Number:
JP2014/059821
Publication Date:
October 16, 2014
Filing Date:
April 03, 2014
Export Citation:
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Assignee:
TOYOBO CO., LTD. (2-8 Dojima Hama 2-chome, Kita-ku Osaka-sh, Osaka 30, 〒5308230, JP)
International Classes:
C09J7/02; B32B25/14; B32B27/00; B32B27/32; C09J109/06; C09J125/10; C09J153/02
Foreign References:
JP2008265307A2008-11-06
JPH10176148A1998-06-30
JP2003064337A2003-03-05
JP2012255071A2012-12-27
JP2013234321A2013-11-21
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