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

Patent metadata

Field	Value
Publication number	US-11969693-B2
Application number	US-202117235455-A
Country	US
Kind code	B2
Filing date	Apr 20, 2021
Priority date	Jun 21, 2016
Publication date	Apr 30, 2024
Grant date	Apr 30, 2024

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 coating solution; and
a coating solution supplier supplying the coating solution to the housing,
wherein the transfer roller has multiple coating rollers that connect via at least one connector to form the transfer roller, and
wherein
a first diameter of the transfer roller, that corresponds to a first coating roller of the multiple coating rollers, is larger at an exterior-most axial length of the first coating roller than a thickness of the transfer roller that corresponds to at least one connection point of the at least one connector, and
a second diameter of the transfer roller, that corresponds to a second coating roller of the multiple coating rollers, is larger than the thickness of the transfer roller at the at least one connection point of the at least one connector.

2. The coating device of claim 1 , wherein a central axis of the at least one connector is on an extension of a rotary shaft of the transfer roller formed from the multiple coating rollers.

3. The coating device of claim 1 , wherein the multiple coating rollers are selected from the group consisting of a gravure roll, a wire bar, a micro gravure roll, a Meyer bar, a nano coater and a direct metering coater.

4. 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 polytetrafluoroethylene and ultra high molecular weight polyethylene.

5. The coating device of claim 1 , wherein a length of the transfer roller is larger than 2,000 mm, and
wherein the at least one connector has a length of 2 to 5% with respect to a length of the transfer roller.

Assignees

• Sk Innovation Co Ltd
• Sk Ie Tech Co Ltd

Inventors

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

Classifications

• B01D71/261

  Polyethylene · CPC title

• B01D67/0088 Primary

  Physical treatment with compounds, e.g. swelling, coating or impregnation · CPC title

• B05C1/0808

  Details thereof, e.g. surface characteristics · CPC title

• B05C1/0813 Primary

  characterised by means for supplying liquid or other fluent material to the roller · CPC title

• B05C1/0826

  the work being a web or sheets (B05C1/0804, B05C1/0808, B05C1/0813, B05C1/0817, B05C1/0821, B05C1/10, B05C1/12 take precedence) · CPC title