Preform neck crystallization method
US9238341B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2012 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Jan 8, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0041
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A neck crystallization method includes inserting a core into the neck, heating the neck using a heater group disposed along a transfer direction while rotating the preform on its axis, and transferring the preform along the transfer direction in a state in which the core is inserted into the neck, and cooling the neck of the preform in a state in which the core is inserted into the neck. The heating of the neck includes a first step that drives first heaters positioned on the upstream side in the transfer direction at a first power, and a second step that drives second heaters positioned on the downstream side of the first heaters at a second power that is lower than the first power until the temperature of the neck reaches a crystallization temperature zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.