B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 15/08 (2006.01)
Patent
CA 2077811
ABSTRACT A polyester resin film laminated metal sheet comprises a biaxially oriented polyester resin film containing about 40 to about 60 weight % of polybutylene terephthalate and about 40 to about 60 weight % of polyethylene terephthalate, and having a glass transition temperature of about 40 to about 65°C and a minimum time for half crystallization at least below about 20 seconds. The biaxially oriented polyester resin film is heat bonded to one or both sides of a metal sheet covered with a single layer of hydrated chromium oxide or a double layer consisting of a lower layer of metallic chromium and an upper layer of hydrated chromium oxide and thereafter quenching. The polyester resin film laminated metal sheet according to the invention can be used for the outside of can stocks such as the outsides of can ends, can bodies in three piece cans, drawn cans, drawn and redrawn cans and screw caps, all of which are treated with hot steam and hot water in a retort for the sterilization of the packed foods.
Inui Tsuneo
Miyachi Akio
Okamura Takaaki
Tanaka Atsuo
Inui Tsuneo
Miyachi Akio
Okamura Takaaki
Swabey Ogilvy Renault
Tanaka Atsuo
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