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Patent Searching and Data


Title:
FILM FOR LID MATERIAL AND CONTAINER USING THE SAME
Document Type and Number:
Japanese Patent JPH1134258
Kind Code:
A
Abstract:

To obtain the subject film satisfying pinhole resistance and excellent in tension or curling in post-treatment such as boiling or retorting by forming a polyurethane resin layer to the single surface of a biaxially stretched polyamide film specified in hot water shrinkage factor.

A base material film 1 may be composed only of one biaxially stretched polyamide film 1a having a shrinkage factor range but a laminated film obtained by laminating a second biaxially stretched polyamide film 1b having a shrinkage factor lower than that of this film to a first biaxially stretched polyamide film 1a having a hot water shrinkage factor range of 1.0-5.0% is also used. A polyurethane resin layer 2 is formed on at least the single surface of the base material film 1 in a coating amt. of 0.01-0.5 g/m2 as easy adhesive coating treatment. Even when the polyurethane resin layers are formed on both surfaces of the base material film 1, this coating amt. is a value only of the single surface.


Inventors:
KOSAKA YUKITOSHI
ONISHI MASAHARU
TATSUI MIYUKI
Application Number:
JP18991297A
Publication Date:
February 09, 1999
Filing Date:
July 15, 1997
Export Citation:
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Assignee:
UNITIKA LTD
International Classes:
B32B7/02; B29D22/00; B32B7/10; B32B27/34; B32B27/40; B29K77/00; (IPC1-7): B32B27/34; B29D22/00; B32B7/02; B32B7/10; B32B27/40
Attorney, Agent or Firm:
Takehiko Matsumoto