Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1978-09-21
1981-03-10
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
26432818, 26432819, 264DIG83, 425145, 425162, 425558, B29D 2700
Patent
active
042553679
ABSTRACT:
A method for injection molding an article wherein additives are selectively introduced into the polymer melt downstream of an accumulation device and upstream of a static mixer just prior to its introduction into the mold cavity. The additives include U.V. stabilizers, flame retardant materials, colorants and blowing agents. The method produces injection molded articles with selective amounts of additives in either the skin or core portions of the articles.
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Rubin, Irving I., "Injection Molding Theory and Practice", New York, John Wiley and Sons, .COPYRGT.1972, pp. 2-7.
Koenig Howard A.
Wallace Clarence W.
Anderson Philip
Boone David E.
Magidson William H.
McClain William T.
Standard Oil Company (Indiana)
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