Method of maintaining an exterior of an operating die system
US6579480B1 · kind B1 · utility
0Cited by
34References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 2000 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Oct 3, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/32
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of maintaining 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.