Papermaking coating station with pressure-sensitive film roll
US8613972B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2009 |
| Grant date | Dec 24, 2013 |
| Priority date | — |
| Expiry date | Oct 16, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A counter roll (26) is positioned to engage a paper or board web (24) in a paper or board making machine along a contact line. A pressure-sensitive EMFi film (28) is disposed on the counter roll to measure the pressure profile of the web along the contact line. A coating apparatus (22) applies a coating to the web passing over the counter roll (26), and a pressure profile of the applied coating is measured by the pressure-sensitive film (28) on the counter roll (26). The pressure-sensitive film (28) may also be disposed to detect details of coating application in a curtain coater (30). Moreover, the film may be driven to provide adjustable vibration for cleaning the coater, or conditioning or controlling the coating flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.