Glass manufacturing – Processes – Glass preform treating
Patent
1981-08-03
1983-02-01
Kellogg, Arthur D.
Glass manufacturing
Processes
Glass preform treating
65 601, 65119, 65227, 65260, C03B 3512
Patent
active
043713874
ABSTRACT:
The present invention was developed to provide an improved process for retaining the substantially pristine state of glass articles, particularly thin-walled, lightweight glass containers. In particular, this invention relates to a process of maintaining the strength of glass containers formed from molten glass gobs as encountered especially in conventional press-and-blow or blow-and-blow equipment of individual section glass machines, the process comprising initially forming a formed portion from each of said gobs, fully forming the remaining portions of the containers from said gobs, grasping the thus-formed containers only at the initially formed portion and transferring them to a cradle device whereby said containers are held in spaced relationship to each other and held free of contacting any solid or unsmooth surface including stoplates, bearing surfaces, conveying belts and the like, partially cooling immediately following the formation of said containers, moving said cradle device with the accompanying containers to an annealing zone whereby the containers including the bottom walls thereof are subjected to a controlled rate of cooling therein, and finally rapidly cooling said containers to ambient temperature while still being gripped only at the initially formed portions thereof.
REFERENCES:
patent: 3498819 (1970-03-01), Lyle et al.
patent: 3764284 (1973-10-01), Rowe
patent: 3787197 (1974-01-01), Snyder et al.
patent: 4325725 (1982-04-01), Fujimoto
Alberding Gilbert E.
Ball Corporation
Kellogg Arthur D.
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