Glass manufacturing – Glassworking or preform by or with reheating means – Planar sheet preform
Patent
1984-12-21
1986-04-01
Kellogg, Arthur
Glass manufacturing
Glassworking or preform by or with reheating means
Planar sheet preform
65106, 65287, 294 65, C03B 23035
Patent
active
045795770
ABSTRACT:
A vacuum mold for shaping hot glass sheets having a rigid back plate, a flexible perforated lower shaping wall, adjustable spacers positioned between the back plate and shaping wall and easily removable side wall members that seal the vacuum chamber and allow easy access to the internal adjustable spacers. The peripheral edge portions of a refractory cloth which covers the mold is coated with heat resistant silicone rubber to seal the vacuum chamber of the mold.
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Kellogg Arthur
PPG Industries Inc.
Siminerio Andrew C.
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