Ultra large-width and consecutive coating device and method for manufacturing membrane using the same

Patent metadata

Field	Value
Publication number	US-2017361283-A1
Application number	US-201715628221-A
Country	US
Kind code	A1
Filing date	Jun 20, 2017
Priority date	Jun 21, 2016
Publication date	Dec 21, 2017
Grant date	—

Abstract

Provided is an ultra large-width coating device applied to a consecutive process. More particularly, the present invention relates to a coating device capable of maximizing productivity by consecutively manufacturing a large-width film without reducing physical properties of the manufactured film by overcoming a problem in that a coating width is limited during a coating process using the existing contact type coating roller, and a method for manufacturing an ultra large-width membrane using the same.

First claim

What is claimed is:

1 . A coating device, comprising:
a transfer roller coating a base film with a coating solution; a housing including a roller groove that has a part of the transfer roller inserted thereinto to rotate the transfer roller and filled with the supplied coating solution; and a coating solution supplier supplying the coating solution to the housing, wherein the transfer roller has two or more contact type coating rollers integrated by a connector.

2 . The coating device of claim 1 , wherein a central axis of the connector is on an extension of a rotary shaft of the coating roller.

3 . The coating device of claim 1 , wherein a thickness of the connector is smaller than diameter of the coating roller.

4 . The coating device of claim 1 , wherein the coating roller is selected from the group consisting of a gravure roll, a wire bar, a micro gravure roll, a Meyer bar, a nano coater and a DM coater.

5 . The coating device of claim 1 , wherein a surface of the housing is made of at least any one selected from the group consisting of poly tetrafluoro ethylene and ultra high molecular weight polyethylene.

6 . A method for manufacturing an ultra large-width membrane, comprising:
forming a base film by stretching a sheet; coating a coating solution on one side or both sides of the base film; slitting the coated film in a longitudinal direction; and winding the slit films, respectively, wherein the coating uses a transfer roller having two or more contact type coating rollers integrated by a connector.

7 . The method of claim 6 , wherein a thickness of the connector is smaller than diameter of the coating roller.

8 . The method of claim 6 , wherein the connector has a length of 2 to 5% with respect to a length of the transfer roller.

9 . The method of claim 6 , wherein in the slitting of the coated film in the longitudinal direction, the coated film is slit parallel to the longitudinal direction of the film at a part where the coated film abuts the connector.

10 . The method of claim 6 , wherein the coating roller is selected from the group consisting of a gravure roll, a wire bar, a micro gravure roll, a Meyer bar, a nano coater and a DM coater.

Assignees

• Sk Innovation Co Ltd

Inventors

• Joo Dong Jin
• Cho Kyu Young
• Kim Yun Bong
• Lee Su Ji
• Kwack Won Sub
• Kim Hye Jin

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• C08J2433/04

  esters · CPC title

• C08J2323/06

  Polyethene · CPC title

• C08J2429/04

  Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids · CPC title

• B29C55/18

  by squeezing between surfaces, e.g. rollers · CPC title