Apparatus for blow-molding hollow articles, in particular bottles
US4072456A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1976 |
| Grant date | Feb 7, 1978 |
| Priority date | — |
| Expiry date | Oct 1, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C49/6835
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A blow mold structure for the blowing of containers, bottles or the like rein a coolant fluid is circulated through the mold. The blow mold includes a pair of openable and closable mold blocks, each carrying a mold insert. The changeable inserts cooperably define the mold cavity, and coolant fluid is circulated between each insert and the adjacent mold block to cool the cavity-defining inserts. A series of grooves is formed in the exterior surface of the mold insert, the insert is sealed to its mold block and coolant fluid is introduced into and removed from the grooves through supply passages in the mold block. A chamfered abutment at one end of each insert and a mounting flange at the other end insures quick changing of inserts while maintaining structural rigidity during use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.