Mold for injection molding a thermoplastic part free from sink m

Details Mold for injection molding a thermoplastic part free from sink m Mold for injection molding a thermoplastic part free from sink m

1995-05-24

1996-07-30

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to evacuate mold or provide controlled environment

26432812, 264572, 425130, 425555, B29C 4500

Patent

active

055405819

ABSTRACT:
When injection-molding a molten thermoplastic resin into a molding having different thicknesses, a void inducing member is set in a cavity corresponding to heavy sections. Then gas pressure is applied passing through a gas passageway to a tip end of the void inducing member, thus forming a void nucleus in the resin adjacent to the tip end of the void inducing member. The void nucleus develops to a void by shrinking force of the resin as the molten resin cools.

REFERENCES:
patent: 4474717 (1984-10-01), Hendry
patent: 4685881 (1987-08-01), Sasaki
patent: 4923666 (1990-05-01), Yamazaki et al.
patent: 5044924 (1991-09-01), Loren
patent: 5069858 (1991-12-01), Hendry
patent: 5080570 (1992-01-01), Baxi et al.
patent: 5090886 (1992-02-01), Jaroschek
patent: 5127814 (1992-07-01), Johnson et al.
patent: 5137680 (1992-08-01), Hendry
patent: 5162092 (1992-11-01), Klobucar et al.

Affiliated with

Also associated with

Rating

Mold for injection molding a thermoplastic part free from sink m does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mold for injection molding a thermoplastic part free from sink m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mold for injection molding a thermoplastic part free from sink m will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1654459