Extrusion die system with removable insert
US6164948A · kind A · utility
6Cited by
28References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 8, 1998 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | May 8, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/32
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A die system for the extrusion of polymer permits external cleaning and maintenance without shutting down the operation. Removable die inserts are located on one or both sides of the die opening section through which polymer is extruded. The inserts are spaced from the die opening section, by a very small distance, so as to avoid interfering with the opening section. When molten polymer accumulates and burns in areas surrounding the die opening section, the inserts can be removed and replaced without interrupting the extrusion of polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.