Two-piece injection molding nozzle seal
US5299928A · kind A · utility
57Cited by
4References
6Claims
0Family size
Inventor
Key dates
| Filing date | Jul 26, 1993 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Jul 26, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/2785
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A two-piece injection molding nozzle seal. The inner piece through which the melt duct extends is formed of a highly thermally conductive material to enhance heat transfer during the thermodynamic cycle. The surrounding outer retaining piece which extends from the heated nozzle into contact with the cooled mold to provide the necessary seal is formed of a substantially less conductive material to avoid undue heat loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.