Multiple-layer films

Details Multiple-layer films Multiple-layer films

1979-01-31

1981-02-24

Kendell, Lorraine T.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428334, 428347, 428349, 428500, 428516, B32B 2700, B32B 2708

Patent

active

042528518

ABSTRACT:
A multiple-layer film having a substrate layer of high density polyethylene or a propylene homo- or co-polymer, and, on at least one surface of the substrate, a heat-sealable layer of a propylene co-polymer containing from 80 to 95% of propylene, the balance being a C.sub.4 to C.sub.10 olefin. The substrate and surface layers exhibit a monoclinic crystalline structure.

REFERENCES:
patent: 2918457 (1959-12-01), Jezl
patent: 3112300 (1963-11-01), Natta et al.
patent: 3112301 (1963-11-01), Natta et al.
patent: 3246061 (1966-04-01), Blatz
patent: 3508944 (1970-04-01), Henderson et al.
patent: 3540979 (1970-11-01), Hughes
patent: 3620825 (1971-11-01), Lohmann
J. Polymer Science, 4, 2563-2582, (1966), "Costereosymmetric d-Olefin Copolymers".
"Polymer", 17, No. 1, 30-33, (1966).
"Manual of Plastics Packaging Materials", 3rd Edition, 1968, pp. 377-379.
"Modern Plastics International", Jun. 1971, pp. 52, 53.
JPI-Journal, 6, Aug. 1968, pp. 51-56.
"Modern Plastics", 78-80, Jun. 1968.
Supplement to Kagaku Kogyo 11, 4, (1967).

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