US RE38,928 E1 | ||
Biaxially stretched polyester film for forming container and method of producing the film | ||
Masahiro Kimura, Shiga (Japan); Kohzo Takahashi, Shiga (Japan); Hiroji Kojima, Osaka (Japan); and Koichi Abe, Kyoto (Japan) | ||
Assigned to Toray Industries, Inc., (Japan) | ||
Appl. No. 9/870,591 PCT Filed May 15, 1997, PCT No. PCT/JP97/01630 § 371(c)(1), (2), (4) Date Jan. 26, 1998, PCT Pub. No. WO97/43332, PCT Pub. Date Nov. 20, 1997. |
||
Application 09/870591 is a reissue of application No. 08/983054, filed on Jan. 26, 1998, now 5,948,525, filed on Sep. 07, 1999. | ||
Claims priority of application No. 8-121519 (JP), filed on May 16, 1996; application No. 8-229018 (JP), filed on Aug. 29, 1996; and application No. 9-022489 (JP), filed on Feb. 05, 1997. | ||
Int. Cl. B32B 7/12 (2006.01); C08F 20/00 (2006.01); C08G 63/02 (2006.01) |
U.S. Cl. 428—339 | 21 Claims |
1. A biaxially stretched polyester film for forming a container, characterized by being formed of a polyester substantially consisting of an ethylene terephthalate unit and an ethylene naphthalate unit, the refractive index in the direction of thickness of the film being 1.5 or greater. |