Injection blow molding
US4615667A · kind A · utility
Inventor
Key dates
| Filing date | Jun 3, 1985 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Jun 3, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/716
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a multiple platen-multiple position press or injection blow molding apparatus for use in the blow molding of containers in which a preform is molded onto a core and is moved relative to the core to space a body portion of the preform from the core when the core is in the blowing station to facilitate the temperature conditioning of the preform to achieve a desired biorientation of the thermoplastic material from which the preform is made when the preform is blow molded to form a container. The temperature conditioning may be achieved by allowing stabilization of the temperature gradient through the material of the preform with or without the assistance of a supply of gas to the preform at a desired temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.