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Title:
HEAT-SHRINKABLE POLYESTER FILM HAVING VOIDS AND PROCESS FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2010/143318
Kind Code:
A1
Abstract:
A heat-shrinkable polyester film having voids is provided which is composed of at least two layers, at least one of which is a polyester resin layer containing a polycycloolefin resin and having voids.  The film has an apparent specific gravity less than 1.00 and has specific thermal contraction properties and specific mechanical properties.  Alternatively, the film imparts specific suitability for opening along a perforation.  Also provided is a process for producing the heat-shrinkable polyester film having voids.

Inventors:
YAMAMOTO Shigetomo (344 aza-Maehata, oaza-Kotsu, Inuyama-sh, Aichi 08, 〒4848508, JP)
山本 茂知 (〒08 愛知県犬山市大字木津字前畑344番地 東洋紡績株式会社 内 Aichi, 〒4848508, JP)
HARUTA Masayuki (10-24 Toyo-cho, Tsuruga-sh, Fukui 50, 〒9148550, JP)
春田 雅幸 (〒50 福井県敦賀市東洋町10番24号 東洋紡績株式会社 内 Fukui, 〒9148550, JP)
Application Number:
JP2009/064827
Publication Date:
December 16, 2010
Filing Date:
August 26, 2009
Export Citation:
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Assignee:
TOYO BOSEKI KABUSHIKI KAISHA (2-8 Dojima Hama 2-chome, Kita-ku Osaka-sh, Osaka 30, 〒5308230, JP)
東洋紡績株式会社 (〒30 大阪府大阪市北区堂島浜二丁目2番8号 Osaka, 〒5308230, JP)
YAMAMOTO Shigetomo (344 aza-Maehata, oaza-Kotsu, Inuyama-sh, Aichi 08, 〒4848508, JP)
山本 茂知 (〒08 愛知県犬山市大字木津字前畑344番地 東洋紡績株式会社 内 Aichi, 〒4848508, JP)
HARUTA Masayuki (10-24 Toyo-cho, Tsuruga-sh, Fukui 50, 〒9148550, JP)
International Classes:
B32B27/36; B29C55/14; B32B5/18; C08J9/00; C08L67/02
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