Acrylic polymer capstock with improved adhesion to...

Details Acrylic polymer capstock with improved adhesion to... Acrylic polymer capstock with improved adhesion to...

2005-02-08

2005-02-08

Nakarani, D. S. (Department: 1773)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

C264S173170, C264S173190, C264S174100, C428S516000, C428S517000, C428S519000, C428S520000

Reexamination Certificate

active

06852405

ABSTRACT:
Disclosed is a composite sheeting comprised of polystyrene having a thin protective layer of an acrylic ester polymer and a process for producing the composite sheeting.The process comprises joining a molten stream of each polymeric material in a single extruder discharge conduit such that there is produced a single molten stream having a reasonably well defined interface between the two types of polymeric material, and thereafter, passing the resulting single stream of material through a sheet-form extrusion die having its die lips generally aligned with the foregoing interface.

REFERENCES:
patent: 3793402 (1974-02-01), Owens
patent: 5169903 (1992-12-01), Toritani et al.
patent: 6147162 (2000-11-01), Tadokoro et al.
patent: 6420050 (2002-07-01), Birch et al.
patent: 6444298 (2002-09-01), Tadokoro et al.

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