Method of controlling coating edge thickness in a web process
US7867562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2007 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Oct 24, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D3/042
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
One method for controlling edge thickness includes applying a coating to a moving substrate, thereby forming a film having a cross direction and a machine direction and one or more edges. The method also includes modifying a thickness of a first portion of the coating along one of the edges of the film, thereby forming a film having a substantially predetermined profile in the cross direction. A method of making a polymeric sheet includes applying a polymer to a moving substrate, thereby forming a sheet having a cross direction and a machine direction. This method further includes removing a first portion of the polymer from a first edge of the sheet, thereby the sheet having a substantially predetermined profile in the cross direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.