Parison forming and plungers for use therein

Details Parison forming and plungers for use therein Parison forming and plungers for use therein

1993-11-05

1994-11-22

Jones, W. Gary

Glass manufacturing

Processes

Utilizing parting or lubricating layer

65362, 65 68, 651822, 65319, C03B 1110

Patent

active

053665287

ABSTRACT:
A plunger assembly for a glassware forming machine for use in forming parisons comprises a metal plunger with a small chamber at the nose portion of the plunger into which water is supplied when the plunger is in use, the water passing out through a pattern of small holes in the nose portion to provide a vapour barrier between the plunger and the hot glass. The plunger has an internal recess and is cooled by air supplied into the recess.

REFERENCES:
patent: 3484510 (1969-12-01), Corazza
patent: 3671211 (1972-06-01), Lloyd
patent: 4585467 (1986-04-01), Trahan
patent: 4798617 (1989-01-01), Foster
patent: 5078769 (1992-01-01), Trier
patent: 5236485 (1993-08-01), Leweringhaus

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