Vacuum press construction

Details Vacuum press construction Vacuum press construction

1987-01-05

1987-12-22

Kellogg, Arthur

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65106, 65273, 65115, C03B 2302

Patent

active

047144890

ABSTRACT:
A vacuum press construction having holes on the press face corresponding to aperture in the glass sheet to be shaped. The holes are sealed in a manner so as to minimize the amount of heat drawn from the periphery of the glass sheet apertures during the pressing operation and maintain glass edge strength at the aperture.

REFERENCES:
patent: 3469963 (1969-09-01), Beattle
patent: 3819351 (1974-06-01), Shaffer et al.
patent: 4187095 (1980-02-01), Frank
patent: 4319907 (1982-03-01), Pike
patent: 4508556 (1985-04-01), Bennett et al.

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