Dual charge compression molding method

Details Dual charge compression molding method Dual charge compression molding method

1990-05-18

1992-02-18

Woo, Jay H.

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

264258, 264259, 156 622, 156242, 156296, B29C 4314

Patent

active

050892061

ABSTRACT:
A dual charge compression molding method in which a first charge of a plastic material that will at least constitute the reinforcing means, i.e., the ribs and/or bosses, is first placed in the mold and compressed, the mold is then opened and a second charge of the plastic material is placed in the mold to constitute the flat or panel portion of the panel part after compression. A plastic part having a perfect appearance surface without sink mark defects can be produced.

REFERENCES:
patent: 3449482 (1969-06-01), Mitchell et al.
patent: 3903343 (1975-09-01), Pfaff
patent: 4051290 (1977-09-01), Jutte et al.
patent: 4353857 (1982-10-01), Ray et al.
patent: 4385955 (1983-05-01), Doerfling et al.
patent: 4636422 (1987-01-01), Harris et al.
patent: 4937032 (1990-06-01), Krone et al.

Affiliated with

Also associated with

Rating

Dual charge compression molding method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual charge compression molding method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual charge compression molding method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1821435