Process and device for bending and tempering by contact

Details Process and device for bending and tempering by contact Process and device for bending and tempering by contact

1990-06-22

1991-10-01

Lindsay, Robert L.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65115, 65288, 65349, C03B 23033

Patent

active

050530690

ABSTRACT:
Glazings are preshaped before putting them through a step of tempering by contact. In a preferred variant, tempering by contact is applied only the central area of the glazing and the marginal zone thereof is tempered by blowing cold air.

REFERENCES:
patent: 4229201 (1980-10-01), Comperatore et al.
patent: 4508556 (1985-04-01), Bennett et al.
patent: 4557745 (1985-12-01), Halberschmidt et al.
patent: 4609391 (1986-09-01), McMaster
patent: 4826522 (1989-05-01), d'lribarne et al.
patent: 4865638 (1989-12-01), Kudo

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