Polyamide film laminate with entrapped liquid

Details Polyamide film laminate with entrapped liquid Polyamide film laminate with entrapped liquid

1974-05-24

1976-05-04

Van Balen, William J.

Stock material or miscellaneous articles

Composite

Of polyamide

428538, 428520, 428516, 428411, 428414, 428518, 428507, 426127, 426129, B32B 2734

Patent

active

039550400

ABSTRACT:
In coextruded or extrusion coated, laminated, polymeric films which have been stretched by the inflated bubble technique, liquid can be entrapped between the collapsed bubble walls and can migrate to an interior layer of the laminate to treat same when the layer adjacent to the entrapped liquid is liquid permeable. For example, in a polyethylene
ylon/ethylene vinyl acetate/entrapped water/ethylene vinyl acetate
ylon/polyethylene laminated film the entrapped water will diffuse through the ethylene vinyl acetate layers to keep the nylon layers plasticized and impact resisitant.

REFERENCES:
patent: 3340091 (1967-09-01), Zweig
patent: 3397263 (1968-08-01), Werner
patent: 3558330 (1971-01-01), Widiger et al.
patent: 3595735 (1971-07-01), Tyrrell
patent: 3600267 (1971-08-01), McFedries, Jr. et al.
patent: 3651200 (1972-03-01), Kuga et al.
patent: 3661695 (1972-05-01), Berliner
patent: 3705659 (1972-12-01), Mackie
patent: 3799167 (1974-03-01), Miller

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