Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1994-04-18
1995-05-02
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428174, 428332, 428336, 428337, 428338, 428339, 428345, 428349, 4284248, B32B 700
Patent
active
054117887
ABSTRACT:
A heat-sealable oriented film or layer of a semi-crystalline thermoplastic polymer. The film has a thin, heat-sealable layer of the same thermoplastic polymer having a different heat-seal temperature, which layer is heat-sealable without requiring fusion of the entire film. There is also provided a method for producing the claimed heat-sealable film.
REFERENCES:
patent: T927010 (1973-11-01), Whitfield
patent: 2632921 (1949-01-01), Kreidl
patent: 2746084 (1953-03-01), Kreidl
Hyde Patrick D.
Ouderkirk Andrew J.
Bond William J.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Co.
Ryan Patrick J.
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