Laminated film of biaxially oriented polypropylene and an olefin

Details Laminated film of biaxially oriented polypropylene and an olefin Laminated film of biaxially oriented polypropylene and an olefin

1984-03-19

1985-06-11

Ives, Patricia C.

Stock material or miscellaneous articles

Composite

Of metal

428464, 428516, 428910, 4284258, 4284251, 4284244, 40 2R, 229 87G, 229 87F, 220449, 220450, B32B 1508, B32B 2708, B65D 6500

Patent

active

045228876

ABSTRACT:
This invention provides a laminated film prepared by laminating at least one surface of a biaxially oriented polypropylene film (A) with an olefin polymer film (B) containing from 10 to 50% by weight of an ethylene component and the balance mainly comprising a propylene component, said olefin polymer film (B) having at least three peaks in the melting curve within the range of from 120.degree. to 165.degree. C. and a surface roughness Ra of from 0.2 to 1.5.mu., said laminated film being excellent in delustering quality, light transmittance, retention of delustering quality under heat and pressure, adhesion to metallized layers and to paper.
This invention further provides a laminated film prepared by laminating a polymer film (C) containing from 1 to 40% by weight of an ethylene component and the balance mainly comprising a propylene component and having one or two melting peaks within the range of from 100.degree. to 165.degree. C. and a surface roughness Ra of below 0.15.mu., in the order of arrangement of (B)/(A)/(C), said laminated film being capable of readily providing a film having a mat finish metallic luster or a mirror finish metallic luster.

REFERENCES:
patent: 3508944 (1970-04-01), Henderson et al.
patent: 3671383 (1972-06-01), Sakata et al.
patent: 4283453 (1981-08-01), Siefried et al.
patent: 4297415 (1981-10-01), Ward et al.
patent: 4340638 (1982-07-01), Brugmans

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