Plastic and nonmetallic article shaping or treating: processes – Reactive gas or vapor treatment of work – Work is organic material
Patent
1983-11-14
1986-06-17
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Reactive gas or vapor treatment of work
Work is organic material
264174, 264236, 264347, 264349, 425 71, 425113, 425206, 425207, 425208, 425376B, 523324, 523326, 523348, 525106, 528901, B29C 4750
Patent
active
045955468
ABSTRACT:
A method for the manufacture of a cross-linked extruded elongated product from polyethylene or other suitable polymer. The polymer is fed into the hopper of a screw extrusion machine. The polymer is heated and melted while being conveyed through the barrel of the screw extruder. A liquid silane compound which comprises a modified vinyl functional silane, a free-radical generator, and a condensation catalyst is carefully metered and injected into the melted polymer. The melted polymer and the liquid silane compound are then mixed and blended to obtain a uniform blended mixture thereof. The blended mixture is then extruded through an extrusion die to form an elongated product of a required final shape and the elongated product is then subjected to the action of moisture and heat until the polymer in the elongated product is cross-linked.
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Crompton & Knowles Corporation
Thurlow Jeffery
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