Retractable pin reaction injection molding

Details Retractable pin reaction injection molding Retractable pin reaction injection molding

2006-11-14

2006-11-14

Heitbrink, Jill L. (Department: 1732)

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

C264S278000, C264S279000, C264S279100

Reexamination Certificate

active

07135138

ABSTRACT:
A retractable pin reaction injection molding device and method for forming a layer on an object are disclosed and claimed. The device includes mold plates that cooperate to form a cavity. Retractable pins hold the object within the cavity. Material is inserted into the cavity under pressure to form a layer on the object. The pins are retracted and material fills the voids left by the retracted pins. A system prevents the material from flowing into the clearance between the pins and the mold plates. The system provides a counter pressure of a non-reacting gas to resist the material insertion pressure. The counter pressure may also be used to balance and control the material injection into the mold. Suitable materials for use with the apparatus and method are also disclosed.

REFERENCES:
patent: 2361348 (1944-10-01), Dickson et al.
patent: 3068522 (1962-12-01), Nickerson et al.
patent: 3626051 (1971-12-01), Liautaud
patent: 4318874 (1982-03-01), Lemelson
patent: 5716561 (1998-02-01), Guergov
patent: 5849237 (1998-12-01), Inoue
patent: 5879599 (1999-03-01), Inoue et al.
patent: 6019921 (2000-02-01), Lutz
patent: 6129881 (2000-10-01), Puniello
patent: 6235230 (2001-05-01), Puniello
patent: 6290614 (2001-09-01), Kennedy, III et al.
patent: 6379138 (2002-04-01), Puniello et al.
patent: 6533566 (2003-03-01), Tzivanis et al.
patent: 6776942 (2004-08-01), Kim
patent: 6787091 (2004-09-01), Dalton et al.
patent: 2002/0016435 (2002-02-01), Simonutti et al.
patent: 2002/0173379 (2002-11-01), Wu et al.
patent: 2005/0098925 (2005-05-01), Puniello et al.

Affiliated with

Also associated with

Rating

Retractable pin reaction injection molding does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Retractable pin reaction injection molding, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retractable pin reaction injection molding will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3644244