Coating method and apparatus
US4292349A · kind A · utility
21Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1979 |
| Grant date | Sep 29, 1981 |
| Priority date | — |
| Expiry date | Nov 30, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/7485
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus and method for applying a high volatility liquid to a moving web to form a coating on the web. The coating liquid is applied to the web through an extrusion-type or slide-type hopper covered by a hood which collects evaporated gas from the applied solvent at a region at which a solid-, liquid-, and gas-phase interface of the coating liquid is formed. The collected gas is utilized to suppress further gas evaporation from the three-phase interface thereby preventing the formation of stripe-like defects due to undesirable solidification of the forming liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.