Tool for molding plastic articles

Details Tool for molding plastic articles Tool for molding plastic articles

1989-06-19

1990-09-11

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

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

With means to heat or cool

219421, 26432815, 26432816, 425549, 425552, B29C 4520, B29C 4573

Patent

active

049558048

ABSTRACT:
This mold tooling has a hot drop assembly operatively mounted in a bore formed therein which opens to a mold face. Heated plastic material is fed to a feed tube of the hot drop assembly and this material is heated at a temperature higher than the working temperature of the mold during its transit the face of the tool by electrically energized heater bands encircling the feed tube. The space between the heater bands and bore wall accommodates tubing through which a flow of chilled cooling air is injected. The temperature and amount of the cooling air may be regulated to match the heat energy discharged by the heating bands into the bore and to the body of the tooling. The flow of cooling air transmits heat energy out of the bore so that heat sensitive plastic materials being molded is not degraded by hot drop assembly heat energy that otherwise would be conducted by the tool body to the tool face.

REFERENCES:
patent: 4687613 (1987-08-01), Tsutsumi
Modern Plastics Encyclopedia, 1984-1985, p. 235, "Fluid-Circulating Temperature Control" by J. J. Fitzgerald.

Affiliated with

Also associated with

Rating

Tool for molding plastic articles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tool for molding plastic articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tool for molding plastic articles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1181358