Coating apparatus
US5766356A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Jul 5, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C11/1023
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A coating apparatus including a slit die 4 for applying a liquid to a surface of a resin film. The slit die 4 ha a die body which is rotatable between an operating position whereat an injection nozzle 13a of the slit die 13 faces a back-up roller 2 for feeding the resin film 50 and a rest position where the nozzle 13a is spaced from the resin film or foil 50. A cleaning device is provided having a roll 40 of a cleaning sheet 41, a take-up roller 23 for taking up the cleaning sheet, and a cleaning roller 24, on which the cleaning sheet moves. The cleaning sheet 41 on the cleaning roller 24 faces the injection nozzle 13a of the slit die when the latter is in its rest position for executing a cleaning operation. After an application of the liquid to a front surface of the resin film, the liquid is also applied to a rear surface of the film, so that the applied layers 50a on the front surface are registered with the applied layers 50b on the rear surface. Sensors 38 and 39 are provided for detecting ends of the layers 50a and 50b, so that a positional deviation, measured between the layers 50a and 50b, is used for correction of the timing of an application and interruption of the feed …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.