Inverted blade metering unit and method for blade-coating a material web
US5104697A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Jan 8, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/36
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a blade coater and a method for coating a web backed by a rotatable backing roll. The blade coater unit includes a support structure, a feeder mounted to the support structure and capable of feeding the coating mix onto the web when brought close to the web in running conditions, and a smoothing device arranged to the immediate vicinity of the web for the application of the fed coating mix. The blade coater unit is essentially placed below the backing roll, the smoothing device is a flexible blade having a tip inclination angle .alpha. less than 20.degree., and the feeder has a narrow exit opening arranged to the stem of the flexible blade without any essential steps in order to facilitate a fast, laminar flow of the coating mix. The approach in accordance with the invention achieves a coat of high quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.