Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1985-09-03
1986-12-30
Van Balen, William J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
156229, 2642107, 4283179, 428327, 428910, 521 54, 521138, B32B 326, B32B 3116
Patent
active
046328696
ABSTRACT:
A resin combination comprising a thermoplastic polymer matrix having dispersed therein as distinct phases, a multiplicity of small spherical solid particles of polybutylene terephthalate, the resin combination in opaque biaxially oriented polymeric film form and the same oriented film structure having on at least one surface thereof a void-free thermoplastic skin layer. The process for preparing a biaxially oriented opaque film comprising providing said resin combination, forming an unoriented film of said resin combination and biaxially orienting said film to an extent sufficient to opacify the same. The process also provides for the opaque film having a void-free thermoplastic skin layer on at least one surface thereof.
REFERENCES:
patent: 4242398 (1980-12-01), Segawa et al.
patent: 4377616 (1983-03-01), Ashcraft et al.
Fosmire Christopher R.
O'Brien Jeffrey J.
Park Hee C.
Gilman M. G.
McKillop A. J.
Mobil Oil Corporation
O'Sullivan, Sr. J. P.
Van Balen William J.
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