Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1976-05-05
1977-10-04
Kucia, Richard R.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264245, 264328, B29F 103
Patent
active
040524973
ABSTRACT:
The invention relates to a method for the manufacture by injection molding of articles composed of a plurality of layers of at least three distinct materials coated one over the other, the method comprising the steps of successive injection of a measured quantity of a first material adapted to form the skin of the article, a measured quantity of a second material to form the intermediate layer, and a measured quantity of a third material to form the body of the article, the materials being introduced into the mold coaxially so as to give a uniform distribution. The invention is especially applicable to the production of articles in which the external and internal materials are joined together by an intermediate material.
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patent: 3513060 (1970-05-01), Krystof
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patent: 3764642 (1973-10-01), Boutillier
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patent: 3873656 (1975-03-01), Garner
patent: 3894823 (1975-07-01), Hanning
patent: 3906066 (1975-09-01), Barrie
patent: 3947177 (1976-03-01), Eckart
Billion S.A.
Kucia Richard R.
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