Method of maintaining an angle between a doctor blade and an opposing surface at a predetermined value
US6071550A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1998 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Jul 17, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C11/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A device for the application of a liquid or viscous medium onto a running opposing surface includes a doctor blade that is mounted on a support beam, whereby the relative positions of the support beam and the opposing surface are adjustable by use of a regulating device. A flexible pressure tubing that is adjustable against the doctor blade is also provided on the support beam. In the process of controlling/regulating the device, the operating condition of the coating applicator is recorded, control values are established on the basis of the recorded results, and the regulating device and/or fluid pressure in the flexible pressure tubing is influenced on the basis of the established control values. Control/adjustments are made in such a manner that the angle of attack between the doctor blade and the opposing surface is maintained at a predetermined value. The tension condition of the flexible pressure tubing is recorded as an operating condition value and information regarding the deformation characteristics of the flexible pressure tubing, as well as the bending characteristics of the doctor blade, are considered when establishing the control values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.