Method for producing glass containers with reduced strain
US4553998A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1984 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Jun 22, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B25/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.