Polyester film, laminated metal sheet and metal container

Details Polyester film, laminated metal sheet and metal container Polyester film, laminated metal sheet and metal container

1994-08-10

1996-03-12

Sluby, P. C.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428327, 428328, 428331, 428458, 428480, 428483, B29D 2200, B32B 1508

Patent

active

054984548

ABSTRACT:
A polyester film having a coefficient of dynamic friction between the film and a metal at 80.degree. C. of not more than 0.45, a polyester film composed of a polyester comprising an ethylene terephthalate unit in a proportion of 70% or more by mole, the polyester film comprising a cyclic ethylene terephthalate trimer in a proportion of 0.7% or less by weight, laminated metal sheets and metal containers manufactured from said laminated metal sheet. According to the present invention, the polyester film shows superior sliding property and superior scratch resistance during can production, as well as the elution of oligomer from the film can be suppressed, so that when the film is used for metal containers for food, the change in taste and smell of the food contained therein and degraded appearance of the surface of the film caused by the deposition of oligomer are avoided.

REFERENCES:
patent: 5132391 (1992-07-01), White et al.
patent: 5240779 (1993-08-01), Ono et al.
patent: 5252404 (1993-10-01), Ishihara et al.
patent: 5262513 (1992-07-01), Tanaka et al.
patent: 5302686 (1993-07-01), Tanaka et al.
EPO Search Report (including Derwert abstracts), Nov. 18, 1994.

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