Title:
POLYESTER MULTILAYERED FILM OR SHEET
Document Type and Number:
Japanese Patent JP3166914
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a film or sheet which has improved gas-barrier properties, mechanical strength, transparency, molding characteristics and can be used effectively in the industry.
SOLUTION: The polyester multilayered film or sheet contains at least one layer of polyethylene terephthalate resin A and at least one layer of a copolymerized resin B of ethylene-2,6-naphthalate unit of 40-90 mole % and ethylene isophthalate unit of 60-10 mole %, wherein the ratio of the resin A to the resin B is 10-90 wt.%:10-90 wt.%.
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Inventors:
Hironobu Kitagawa
Tsuyoshi Matsunaga
Fujio Hirasawa
Takuma Kobayashi
Tsuyoshi Matsunaga
Fujio Hirasawa
Takuma Kobayashi
Application Number:
JP3826499A
Publication Date:
May 14, 2001
Filing Date:
February 17, 1999
Export Citation:
Assignee:
TOYO BOSEKI KABUSHIKI KAISHA
International Classes:
B65D1/00; B32B7/02; B32B27/36; B65D1/09; C08L67/02; (IPC1-7): B32B27/36
Domestic Patent References:
| JP2266938A | ||||
| JP2172738A | ||||
| JP5066578A |