Process for making multilayered containers
US4309380A · kind A · utility
18Cited by
10References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1979 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Jul 19, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0069
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for forming a hollow multilayered thermoplastic article utilizing a liner and a core rod formed at least in part of a porous metal and having a blow slot. A vacuum is applied to the liner through the porous metal part of the core rod and optionally the blow slot and blowing pressure is applied through the blow slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.