Coating method, optical film and antireflective film
AssigneeFuji Photo Film Co., Ltd.
InventorTomonari Ogawa
Life of this patent
Estimating the term…
Abstract
A coating method includes the steps of: providing a pressure reducing chamber and a slot die adjacent to each other from an upstream side in a moving direction of a base material, providing a backup roller so as to face the slot die, and coating a coating liquid on the base material using the slot die, the base material being subjected to tension by the pressure reducing chamber, wound around the backup roller and continuously moved, wherein when A=η×V×h×L×1/D3, the coating liquid is coated under 2 N/m2≦A≦700 N/m2, where η is coating liquid viscosity, V is a coating speed, h is a coating film thickness in a wet state, L is a slot length, and D is a slot width.
Claims6
A coating method comprising the steps of:
- providing a pressure reducing chamber and a slot die adjacent to each other from an upstream side in a moving direction of a base material;
- providing a backup roller so as to face said slot die;
- and
- coating a coating liquid on said base material using said slot die, said base material being subjected to tension by said pressure reducing chamber, wound around said backup roller and continuously moved,
- wherein when
- A=η×V×h×L×1/D3,
- the coating liquid is coated under
- 2N/m2≦A≦700 N/m2,
- where η is coating liquid viscosity, V is a coating speed, h is a coating film thickness in a wet state, L is a slot length, and D is a slot width.
Dependencies are inferred from the claim text.