Process and equipment for heat treatment of the body of a preform or of an intermediate-stage container made of a thermoplastic material
US5681521A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1995 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Oct 13, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2501/0081
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to the thermal treatment of the body of a preform (1) or of an intermediate container made of a thermoplastic material during a process for manufacture of the container, such as a flask or bottle, in particular by blowing or stretching-blowing, the entirety of the body of the preform being heated to a temperature greater than the softening temperature of the material, at least one longitudinal portion (13) of the body (2) of the preform in rotation on itself being heated to a temperature greater than that of the rest (14) of the body, thereby making it possible to produce a finished container incorporating a body having a complex shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.