Method for manufacturing plastics blanks
US4071532A · kind A · utility
9Cited by
6References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1975 |
| Grant date | Jan 31, 1978 |
| Priority date | — |
| Expiry date | Nov 14, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Method for manufacturing blanks from a synthetic plastics material includes mould cavity defined between a mandrel and an outer mould. A retractable sleeve is slidably mounted on the mandrel and is displaceable within the cavity at a rate which depends on the rate at which the plastics material is injected into the cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.