Apparatus for stretch blow molding hollow heat-resistant container
US5182122A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Sep 25, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2035/165
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides an apparatus for stretch blow molding a preform into a hollow container having a heat-resistant property, including a heatable blow mold for forming the preform located therein into a hollow container by a biaxial stretching and blow molding process, and a heat setting mold for heat setting the hollow container. The apparatus includes a stretching rod for longitudinally stretching the preform when the stretching rod is forwardly moved in engagement with the inner bottom of the preform. The stretching rod has a cooling medium introducing tube centrally located therein with an outlet port adapted to introduce cooling medium into the interior of the hollow container. The cooling medium introducing tube is surrounded by thermal insulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.