COATING METHOD AND APPARATUS, AND MANUFACTURING METHOD OF OPTICAL FILM AND ANTIREFLECTION FILM

PROBLEM TO BE SOLVED: To provide coating method and apparatus which can prevent wet spreading, wet shrinkage, and turbulence of a coating liquid at the end parts in the width direction of a slot die, especially in coating a low viscosity film, to increase a coatable area, thereby nearly the whole co...

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Bibliographische Detailangaben
Hauptverfasser:	OGAWA TOMONARI, NOUJIYOU KAZUHIKO, IWASE EIJIRO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide coating method and apparatus which can prevent wet spreading, wet shrinkage, and turbulence of a coating liquid at the end parts in the width direction of a slot die, especially in coating a low viscosity film, to increase a coatable area, thereby nearly the whole coating film in the width direction can be manufactured as a product, thus improving the product yield, and to provide manufacturing methods of optical film and antireflection film. SOLUTION: The coating method applies the coating liquid on a web W continuously running while being supported by a backup roller 11 by using a slot die 12. In the method, coating is performed in such a state that the slot die tip 12A is recessed so that a clearance difference L between the center part and both ends in the width direction of the slot die tip 12A with respect to the backup roller 11 becomes 1-10 μm. COPYRIGHT: (C)2007,JPO&INPIT