Method of moulding containers from at least two different plastic materials, machine for carrying out this method and containers obtained thereby
US4335068A · kind A · utility
38Cited by
14References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1978 |
| Grant date | Jun 15, 1982 |
| Priority date | — |
| Expiry date | Dec 18, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/1668
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of moulding containers consisting of two plastic materials compatible with and sealable to each other, of differing nature and/or color, wherein the material is injected into a space provided between the walls of a mould and a counter-mould, and comprising defining within said space by means of removable separators a first and a second sub-space; injecting into said first sub-space a first one of said materials to fill it fully, injecting into the second sub-space the second material, removing said separators and continuing the injection under pressure of said second material until local interpenetration thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.