Injection molding apparatus
US5143733A · kind A · utility
52Cited by
15References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Apr 19, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/26
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for forming multilayered articles including a nozzle communicating with the mold cavity. The nozzle includes a first nozzle channel for feeding a first thermoplastic material to the mold cavity and a second nozzle channel communicating with the first nozzle channel for feeding a second thermoplastic material to the mold cavity. A metered amount of second material is fed from the second nozzle channel to the first nozzle channel and subsequently to the mold cavity by the first material from the first nozzle channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.