Method for producing glass containers with reduced strain

Details Method for producing glass containers with reduced strain Method for producing glass containers with reduced strain

1984-06-22

1985-11-19

Kellogg, Arthur

Glass manufacturing

Processes

Forming product or preform from molten glass

65104, 65117, 65119, 65348, C03B 2500

Patent

active

045539987

ABSTRACT:
A method is provided for the manufacture of glass containers (10) of the type having a sidewall (12) and having a bottom (16) that is thicker than the sidewall (12). The method comprises a step in which a centered portion (44) of the bottom (16) is cooled subsequent to the molding step. Cooling the centered portion (44) is effective to develop a reverse strain in the transition portion (42a) of the sidewall (12) that is proximal to the bottom (16). This reverse strain corrects the strain that is induced by unequal cooling of a relatively thin sidewall (12) and a relatively thick bottom (16) and results in a reduction of annealing time.

REFERENCES:
patent: 3235353 (1966-02-01), Rupli
patent: 3388899 (1968-06-01), Fuller

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