Coinjection molding cooled shooting pot cylinder
US7291304B2 · kind B2 · utility
2Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2004 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Apr 21, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/7331
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Coinjection molding shooting pot cooling apparatus and method are configured to cool a shooting pot cylinder which, in combination with a shooting pot piston, injects a melt through a coinjection nozzle having at least two melt channels ending at the same gate. Preferably, a heat sink sleeve is disposed to contact an outer surface of a rear portion of the shooting pot cylinder. The heat sink sleeve is configured to remove sufficient heat from the shooting pot cylinder to increase the viscosity of the melt therein, thus reducing melt leakage between the shooting pot piston and the shooting pot cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.