Method of operating a gas sealing valve and valve equipped plast

Details Method of operating a gas sealing valve and valve equipped plast Method of operating a gas sealing valve and valve equipped plast

1991-10-09

1993-06-29

Michalsky, Gerald A.

Fluid handling

Processes

137493, 13762414, 425563, 425564, F16K 31122

Patent

active

052225143

ABSTRACT:
A method is disclosed for operating a valve needle for plastic processing plants. The needle valve may be controlled by a control valve, which in turn is controlled by a working gas volume in order to prevent formation of internal waviness in injection molded articles even under very high gas pressures and to assure high flexibility in production without refitting delays. During plastic mass injection the valve needle seals tightly. During gas return the valve needle remains open until the gas bubble in the mold cavity is completely emptied.

REFERENCES:
patent: 2016074 (1935-10-01), Continenza
patent: 2480712 (1949-08-01), Carbon
patent: 2836153 (1958-05-01), Dyson
patent: 2940123 (1960-06-01), Beck et al.
patent: 3070126 (1962-12-01), Schneider
patent: 4106887 (1978-08-01), Yasuike et al.
patent: 4781554 (1988-11-01), Hendry
patent: 5080570 (1992-01-01), Baxi et al.
Klamm and Feldmann, "Gasinnendruckverfahren beim Spritzgiessen", Kunststoffe 78 (1988) 9 pp. 767-771.

Affiliated with

Also associated with

Rating

Method of operating a gas sealing valve and valve equipped plast does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of operating a gas sealing valve and valve equipped plast, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of operating a gas sealing valve and valve equipped plast will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1748515