Method of improving coating uniformity
US6813820B2 · kind B2 · utility
5Cited by
27References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2001 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Jan 21, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49986
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention is a method of forming extrudate having substantially uniform thickness. A shim is formed which has a thickness variation of less than or equal to about 0.5 mil (13 microns) total indicated runout. This shim is disposed between a first die portion having a first surface and a second die portion having a second surface. A slot is formed between the first surface and the second surface. The slot has a height dimension substantially the same as the shim thickness. Flowable material is extruded through the slot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.