Method and machine for producing containers by injecting a liquid inside successive preforms
US10357915B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 18, 2015 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Jan 17, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7158
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of analyzing preforms for potential bursting during forming and filling by injecting an incompressible liquid to shape the successive heating preforms into containers and fill the containers. The method defines at least one stress parameter correlated to the internal stress of the thermoplastic material of the preform and defines a range of acceptable values for the stress parameter. The method includes analyzing each successive initial preform and each successive heated preform, determining a value of the stress parameter, comparing the determined value to a range of acceptable values, and emitting an output signal when the determined value is outside the acceptable range of values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.