Vented injection molding machine and method

Details Vented injection molding machine and method Vented injection molding machine and method

1976-07-08

1978-09-05

Taylor, Billy S.

Agitating

Stirrer within stationary mixing chamber

Pump type

366323, 366348, 425 73, 425203, 425812, B29B 108, B29B 504

Patent

active

041125193

ABSTRACT:
Injection molding apparatus is disclosed for molding degradable synthetic resinous materials such as nylons. A vented injection molding machine includes a barrel, a rotatable reciprocable screw and means for preventing ingestion of a deleterious atmospheric gas such as oxygen. The particular apparatus whereby exclusion of the atmospheric gas may be effected includes a conduit having a terminal end thereof positioned at the vent opening of the injection molding machine barrel. The conduit communicates with a source of inert gas and directs a pressurized current of inert gas into the vent opening during the transient time interval between the end of the injection portion of the molding machine cycle and the plasticization portion of the machine cycle. If desired, the inert gas may flood the vent opening continuously. Both nitrogen and carbon dioxide are suitable inert gases for use with nylon materials.

REFERENCES:
patent: 2252689 (1941-08-01), Bradshaw
patent: 2692405 (1954-10-01), Gayler
patent: 3263276 (1966-08-01), Maier
patent: 3712594 (1973-01-01), Schippers et al.
patent: 3737151 (1973-06-01), Schaeffer et al.
patent: 3826477 (1974-07-01), Kunogi et al.
patent: 3879155 (1975-04-01), Hendru
patent: 3963558 (1976-06-01), Skidmore
patent: 3992500 (1976-11-01), Kruder et al.

Affiliated with

Also associated with

Rating

Vented injection molding machine and 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 Vented injection molding machine and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vented injection molding machine and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2100508