Coinjection molding of multi-layered articles

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6129536
SERIAL NO

09305616

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Abstract

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A multi-cavity coinjection mold having a relatively large plurality of cavities for simultaneously molding a relatively large plurality of multi-layered articles including a) a plurality of cavity groups each defining a relatively small plurality of said cavities, a single balanced hot runner for supplying said relatively small plurality of cavities with contiguous different plastics materials, and a valve for sequentially supplying desired contiguous quantities of the plastics materials from plastics material sources, common to all of said groups, to the balanced hot runner; and b) a hot runner manifold system connected to the plastic material sources to supply the plastic materials to all of the valves; and related methods.

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Patent Owner(s)

Patent OwnerAddress
DTL TECHNOLOGY LIMITED PARTNERSHIPAMHERST NH

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Beck, Martin H Amherst, NH 51 1199
Rollend, George F Amherst, NH 23 256

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