Parison formation in the manufacture of hollow articles of glass

Details Parison formation in the manufacture of hollow articles of glass Parison formation in the manufacture of hollow articles of glass

1986-01-23

1987-07-28

Kellogg, Arthur

Glass manufacturing

Processes

Utilizing parting or lubricating layer

65 76, 65 81, 65169, 651822, 651825, C03B 1106

Patent

active

046829962

ABSTRACT:
A method and plunger arrangement for forming parisons in the manufacture of hollow articles of glassware. The method comprising forming each parison by introducing a gob of molten glass into a mould cavity (10) having the shape desired for the external surface of the parison, and moving a plunger (14,70) into the mould cavity to cause the molten glass to conform to the shape of the cavity. The method also comprises forming a layer of gas (G.98) between a surface portion of the plunger and the molten glass so that, as the plunger moves into the cavity, the glass is pushed into shape by the layer of gas, and rotating or vibrating the plunger while it is in the mould cavity. The plunger arrangement provides means for carrying out the method.

REFERENCES:
patent: 1560062 (1925-11-01), Kucera

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