Injection molding nozzle
US6234783A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 5, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Apr 5, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/2858
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved injection molding nozzle shows a high hardness and is chemically stable so that the inner surface thereof is not corroded nor the gas or the fluid forced to penetrate into the gap between the injection molding nozzle and the valve pin seize the valve pin regardless of the temperature and the pressure of the material to be injected. Additionally, the valve pin is not pliable and does not give rise to a collapse on the part of the valve pin. The injection molding nozzle to be used for resin and molten metal is characterized in that it is made of a ceramic material and at least part of the outer periphery is covered with metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.