Coating rod and producing method therefor
US7470327B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2004 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Sep 30, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B37/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A peripheral surface of a coating rod has an area where grooves (convex portions) are formed. This area is ground by a grinding apparatus by which a maximum height Ry of the rod surface is adjusted to 15 μm or less. Further, a ratio of D/W is adjusted to 0.01 or more, wherein D is a total distance of the convex portions of the rod actually abutting on a web in an axial direction of the rod, and W is a coating width of the web. Furthermore, straightness of the rod is adjusted to 30 μm or less per 1 m, and roundness of the rod is adjusted to 10 μm or less. Micro-projections are removed by grinding so that scratches of a coating surface are prevented from occurring. Coating unevenness is prevented by improving the straightness and the roundness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.