Method for the hot-working of glass

Details Method for the hot-working of glass Method for the hot-working of glass

1975-11-17

1976-09-07

Kellogg, Arthur D.

Glass manufacturing

Processes

Utilizing parting or lubricating layer

65374R, c03B 1100

Patent

active

039791963

ABSTRACT:
The undulation of hot-moulded glass is avoided when the cooling of the glass edge layers in the first phase of the moulding operation is delayed and is accelerated after completed moulding. This is achieved by using a mould of a glassy carbon having a porous structure. Prior to the moulding, the pores are filled with a gas-forming liquid or a gas. The resulting gas film between the glass and the surface of the mould is removed ater completed moulding. The pores may subsequently be filled with a cooling agent.

REFERENCES:
patent: 2395727 (1946-02-01), Devol
patent: 3186818 (1965-06-01), Havens et al.
patent: 3254981 (1966-06-01), Havens
patent: 3900328 (1975-08-01), Parsons et al.

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