Melt flow compensation in an extrusion apparatus
US6547995B1 · kind B1 · utility
172Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2001 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Oct 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2948/92904
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed are a method and apparatus for matching the extrusion rate of a liquifier which extrudes a flow of material to a predetermined target output rate. The present invention adjusts the volumetric rate of material going in to the liquifier to account for a predicted melt flow component of material being extruded from the liquifier. Compensating for the predicted melt flow results in reduced error in an extrusion profile produced by material deposited along a toolpath followed by the liquifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.