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Title: Method of coextruding plastics to form a composite sheet

Abstract

This invention pertains to a method of producing a composite sheet of plastic materials by means of coextrusion. Two plastic materials are matched with respect to their melt indices. These matched plastic materials are then coextruded in a side-by-side orientation while hot and soft to form a composite sheet having a substantially uniform demarkation therebetween. The plastic materials are fed at a substantially equal extrusion velocity and generally have substantially equal viscosities. The coextruded plastics can be worked after coextrusion while they are still hot and soft.

Inventors:
 [1]
  1. (Chatham Township, Morris County, NJ)
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
OSTI Identifier:
865469
Patent Number(s):
4521359
Application Number:
06/327,274
Assignee:
Exxon Research & Engineering Co. (Florham Park, NJ) SNL
DOE Contract Number:  
49-2862
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; coextruding; plastics; form; composite; sheet; pertains; producing; plastic; materials; means; coextrusion; matched; respect; melt; indices; coextruded; side-by-side; orientation; hot; soft; substantially; uniform; demarkation; therebetween; fed; equal; extrusion; velocity; viscosities; plastic material; plastic materials; substantially uniform; substantially equal; composite sheet; /264/156/425/

Citation Formats

Tsien, Hsue C. Method of coextruding plastics to form a composite sheet. United States: N. p., 1985. Web.
Tsien, Hsue C. Method of coextruding plastics to form a composite sheet. United States.
Tsien, Hsue C. Tue . "Method of coextruding plastics to form a composite sheet". United States. https://www.osti.gov/servlets/purl/865469.
@article{osti_865469,
title = {Method of coextruding plastics to form a composite sheet},
author = {Tsien, Hsue C.},
abstractNote = {This invention pertains to a method of producing a composite sheet of plastic materials by means of coextrusion. Two plastic materials are matched with respect to their melt indices. These matched plastic materials are then coextruded in a side-by-side orientation while hot and soft to form a composite sheet having a substantially uniform demarkation therebetween. The plastic materials are fed at a substantially equal extrusion velocity and generally have substantially equal viscosities. The coextruded plastics can be worked after coextrusion while they are still hot and soft.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {6}
}

Patent:

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