TRANSPARENT FILM FOR LAMINATION COATING OF METALLIC CAN

Title:

TRANSPARENT FILM FOR LAMINATION COATING OF METALLIC CAN

Document Type and Number:

WIPO Patent Application WO/1995/015993

Kind Code:

A1

Abstract:

A transparent polyester film for use in the lamination coating of metallic cans, substantially formed from a polyester composition prepared by homogeneously mixing: (A) 70-40 wt.% of a polyethylene terephthalate based on repeating ethylene terephthalate units and having a melting point of 250-262 �C, and (B) 30-60 wt.% of a polybutylene terephthalate based on repeating butylene therephthalate units and having a melting point of 215-225 �C. The film is characterized by: (i) having a crystallization temperature of 65-120 �C, (ii) having a secondary transition point of 40 �C or above, (iii) having a plane orientation coefficient of 2.12 to 0.19 and (iv) being substantially free from the occurrence of white spots even when treated with steam at 130 �C for 30 minutes after being laminated with a metallic sheet. This film does not form any white spot after retorting when used for the lamination coating of metallic cans.

Inventors:

MINAMIHIRA YUKIHIKO
IZUMI YUZURU
KUBO KOUJI
MURAKAMI YOJI
ONO TADASHI

Application Number:

PCT/JP1993/001792

Publication Date:

June 15, 1995

Filing Date:

December 10, 1993

Export Citation:

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Assignee:

TEIJIN LTD (JP)

International Classes:

B32B15/08; C08J5/18; (IPC1-7): C08J5/18; B32B15/08

Foreign References:

JPH05186612A

1993-07-27

Other References: