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:
-
- Chatham Township, Morris County, NJ
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 865469
- Patent Number(s):
- 4521359
- Application Number:
- 06/327,274
- Assignee:
- Exxon Research & Engineering Co. (Florham Park, NJ)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- 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}
}
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