Method of making a dual durometer self-locking and sealing plug

Details Method of making a dual durometer self-locking and sealing plug Method of making a dual durometer self-locking and sealing plug

1988-06-22

1989-12-05

Thurlow, Jeffery

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

264246, 2642973, 2643288, 425116, 4251291, 425130, 425134, B29C 4516, B32B 2708

Patent

active

048851213

ABSTRACT:
A continuous method of making a dual durometer self-locking, self-sealing plug for filling and sealing holes in panels. The plug is made from two different, chemically compatible thermoplastic materials by coinjection of the two molten components sequentially into a mold and cooling them concurrently to form the unitary plug.

REFERENCES:
patent: 3807920 (1974-04-01), Aoki
patent: 3878282 (1975-04-01), Bonis et al.
patent: 4444711 (1984-04-01), Schad
patent: 4734023 (1988-03-01), Nesch et al.

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