Method for cooling plastic injection mold dies
US4151243A · kind A · utility
7Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1978 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Apr 3, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/812
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for forming a continuous cooling liquid passageway through two separable injection mold dies when they are closed with a supply system flowing cooling liquid at a less than atmospheric pressure at least at the junction of the dies through the passageway only when the dies are closed and air when the dies are opened and the passageway is discontinuous.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.