Claims
- 1. A process for biaxially orienting a non-foamed thermoplastic resin article comprising forming said article from an admixture of a thermoplastic resin selected from homopolymers and copolymers of vinyl chloride or acrylonitrile-butadiene-styrene copolymers capable of biaxial orientation and an additive resin having a molecular weight above 10.sup.6 and selected from copolymers of styrene-acrylonitrile, methacrylonitrile-styrene, alpha methylstyrene-styrene-acrylonitrile, methyl acrylate-ethyl acrylate, methyl methacrylate-ethyl acrylate, methyl methacrylate-styrene-alpha methylstyrene, methyl methacrylate-alpha methylstyrene, or methyl methacrylate-styrene-acrylonitrile, said admixture requiring a lower force to stretch during orientation than a thermoplastic resin article absent the additive resin, heating said article to a temperature of from about 5.degree. to 20.degree. C. above the glass transition temperature of said thermoplastic resin, and biaxially orienting said thermoplastic resin composition at said temperature.
- 2. The process of claim 1 wherein said article contains; for every 100 parts by weight of said thermoplastic resin, from about 0.2 to 5 parts by weight of said additive resin.
Priority Claims (1)
Number |
Date |
Country |
Kind |
81 23149 |
Dec 1981 |
FRX |
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Parent Case Info
This is a continuation of application Ser. No. 605,577, filed Apr. 30, 1984, now abandoned, which is a continuation of application Ser. No. 446,457, filed Dec. 3, 1982, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
859217 |
Dec 1970 |
CAX |
921308 |
Mar 1963 |
GBX |
1292864 |
Oct 1972 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Schildknecht--"Vinyl & Related Polymers"--pp. 45-47 (2/52). |
"Polyvinylchloride" Sarnetnick--Apr. 1969, p. 215. |
Continuations (2)
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Number |
Date |
Country |
Parent |
605577 |
Apr 1984 |
|
Parent |
446457 |
Dec 1982 |
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