Blow molding extrusion die with rectangular slots
US5486333A · kind A · utility
5Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1993 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Sep 16, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C49/04116
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A die for a blow molding machine has at least one circumferential rectangular cutout section contiguous with the die exit in at least the die ring or the mandrel. The rectangular cutout section expands the material flow channel between the die ring and the mandrel to increase the volume flow of material passing through the die exit at the rectangular cutout section. However, the constant length of the rectangular cutout section in a longitudinal direction maintains a constant linear velocity of material flowing through the die exit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.