Method for the stretch-blowing of a container, comprising a retraction of the stretch rod during a boxing operation
US9688013B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2012 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Sep 10, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2267/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a container from a blank in a stretch blowing assembly equipped with a mold provided with a wall and a mold bottom axially movable between an extended position and a retracted position and a stretch unit having a rod axially movable with respect to the wall and a device for controlling the movement of the rod. The method involves a stretch blowing phase; a boxing phase during which the mold bottom, initially in the extended position, is moved towards its retracted position, the boxing phase having a retraction operation including controlling a movement of the rod in synchronization with the movement of the mold bottom, or releasing the rod to allow the free axial movement thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.