Method for production of functional film, substrate conveyance apparatus, and functional film produced with the method
First Claim
1. A method for producing a functional film comprising the steps of:
- (a) forming a coated layer by coating with a coating solution onto a substrate being belt-like and continuously conveyed, and the coating solution containing solid components dissolved or dispersed in a solvent, and (b) drying the coated layer while the substrate with the coated layer is conveyed by supporting in a floating state by blowing a gas to an uncoated surface of the substrate from a conveyance apparatus having a plurality of blowing outlets arranged along the direction of the conveyance of the substrate in a drying process for producing a functional film by removing by evaporation of the solvent from the coated layer, wherein the conveyance apparatus features alternately squared notches and raised portions having the blowing outlets, and in a plurality of the adjacent raised portions and the squared notches, the gas is blown from the blowing outlets in order to make a difference between (1) and (2) to be not less than 10 Pa and not more than 1,000 Pa;
wherein (1) is the back pressure generated between the raised portion and the uncoated surface of the substrate, and (2) is the back pressure generated between the squared notch adjacent to the raised portion and the uncoated surface of the substrate.
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Accused Products
Abstract
A method for producing a functional film having the steps of: (a) forming a coated layer with a coating solution onto a substrate, and (b) drying the coated layer while the substrate is conveyed in a floating state by blowing a gas to an uncoated surface of the substrate from a plurality of blowing outlets arranged along the direction of the conveyance of the substrate, wherein the conveyance apparatus features alternately squared notches and raised portions having the blowing outlets, and in a plurality of the adjacent raised portion and the squared notch, the gas is blown from the blowing outlets to make a difference of back pressure between the raised portion and the uncoated surface of the substrate and the back pressure between the squared notch adjacent to the raised portion and the uncoated surface of the substrate to be between 10-1,000 Pa.
17 Citations
22 Claims
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1. A method for producing a functional film comprising the steps of:
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(a) forming a coated layer by coating with a coating solution onto a substrate being belt-like and continuously conveyed, and the coating solution containing solid components dissolved or dispersed in a solvent, and (b) drying the coated layer while the substrate with the coated layer is conveyed by supporting in a floating state by blowing a gas to an uncoated surface of the substrate from a conveyance apparatus having a plurality of blowing outlets arranged along the direction of the conveyance of the substrate in a drying process for producing a functional film by removing by evaporation of the solvent from the coated layer, wherein the conveyance apparatus features alternately squared notches and raised portions having the blowing outlets, and in a plurality of the adjacent raised portions and the squared notches, the gas is blown from the blowing outlets in order to make a difference between (1) and (2) to be not less than 10 Pa and not more than 1,000 Pa;
wherein (1) is the back pressure generated between the raised portion and the uncoated surface of the substrate, and (2) is the back pressure generated between the squared notch adjacent to the raised portion and the uncoated surface of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 21, 22)
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13. A conveyance apparatus conveying a belt-like and continuously conveyed substrate onto which (a) a coated layer is formed by coating with a coating solution, and the coating solution containing solid components dissolved or dispersed in a solvent, and (b) the coated layer is dried while the substrate with the coated layer is conveyed by supporting it in a floating state by blowing a gas against an uncoated surface of the substrate from a conveyance apparatus featuring a plurality of blowing outlets arranged along the direction of the conveyance of the substrate in a drying process to produce a functional film by evaporation of the solvent from the coated layer,
wherein the squared notches and raised portions having the blowing outlets are alternately provided, and in a plurality of the adjacent raised portions and the squared notches, the gas is blown from the blowing outlets in order to produce a difference between back pressure (1) and back pressure (2) to be not less than 10 Pa and not more than 1,000 Pa; - wherein (1) is the back pressure generated between the raised portion and the uncoated surface of the substrate, and (2) is the back pressure generated between the squared notch, adjacent to the raised portion, and the uncoated surface of the substrate.
- View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
Specification