Coinjection of hollow articles and preforms
US4717324A · kind A · utility
107Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | May 12, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/1656
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for coinjecting a plurality of thermoplastic materials to mold an article having a layered wall structure using thermoplastic material having different optimum processing temperatures including the maintenance of the optimum temperatures in flow paths individual to each material from its source to a mold cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.