Back to results
US 8,273,283 B2Granted
Method of making molded articles
AssigneePolyOne Corporation
InventorsSaleem Shakir, Sang Lee
Life of this patent
Estimating the term…
Abstract
A method of making a finely textured molded article is disclosed. The method utilizes properties of the compound being molded, such as impact toughness and melt flow index. Poly(vinyl halide), particularly polyvinyl chloride), articles can be custom-injection-molded using the method, in order to simulate the appearance of original metal, glass, or wood articles. Consumer, transportation, building construction, and other industries can benefit from durable plastic articles that simulate the more fragile articles.
Claims20
A method of making a custom-injection-molded panel, comprising the steps of:
- (a) selecting a high flow custom-injection-molded polyvinyl halide compound having a minor amount of alkyl-aryl phosphite stabilizer, a Notched Izod Impact strength according to ASTM D256 at 23° C. and 0.32 cm thick test samples of at least about 640 J/m, and a melt flow index according to ASTM D1238 of at least about 80 grams/10 minutes;
- (b) injecting the compound into a mold cavity for a panel having a temperature ranging from about 180 to about 220° C., and
- (c) cooling the compound in the form of the compound-injection molded panel.
Dependencies are inferred from the claim text.