Coating device and coating method

Patent metadata

Field	Value
Publication number	US-9968957-B2
Application number	US-201414772702-A
Country	US
Kind code	B2
Filing date	Mar 4, 2014
Priority date	Mar 11, 2013
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A coating device includes: a first roll including a roll surface on which an application liquid is deposited; a first scratch off member configured to scratch off the application liquid from the roll surface of the first roll; a second roll including a roll surface configured to contact with the roll surface of the first roll, wherein the second roll is configured to rotate in a rotation direction opposite to a rotation direction of the first roll, the application liquid is transferred from the roll surface of the first roll to the roll surface of the second roll, and the second roll is configured to transfer the transferred application liquid to a steel strip; and a second scratch off member configured to scratch off the application liquid from the roll surface of the second roll.

First claim

The invention claimed is:

1. A coating device comprising:
a first roll including a roll surface on which an application liquid reserved in a pan dish is deposited;
a first scratch off member configured to scratch off the application liquid from the roll surface of the first roll;
a second roll including a roll surface configured to contact with the roll surface of the first roll, wherein the second roll is configured to rotate in a rotation direction opposite to a rotation direction of the first roll, the application liquid is transferred from the roll surface of the first roll to the roll surface of the second roll, and the second roll is configured to transfer the transferred application liquid to a steel strip;
a second scratch off member configured to scratch off the application liquid from the roll surface of the second roll; and
a third roll configured to partially wind the steel strip, cooperate with the second roll to pinch the steel strip, and rotate in a rotation direction opposite to the rotation direction of the second roll,
wherein the first roll is a gravure roll,
the first scratch off member is located between a more upstream side than an uppermost part of the first roll along the rotation direction of the first roll and more upstream side than a position where the first roll contacts with the second roll along the rotation direction of the first roll,
the second scratch off member is located between a more downstream side than an uppermost part of the second roll along the rotation direction of the second roll and more upstream side than a position where the second roll contacts with the first roll along the rotation direction of the second roll, and
the first roll, the second roll and the third roll are arranged such that a part of the steel strip, which is upstream side from a position where the second roll applies the application liquid to the steel strip along a direction that the steel strip proceed, passes not below the second roll in a gravity direction.

2. The coating device according to claim 1 , further comprising a controller configured to control a proceeding speed of the steel strip to be not slower than 30 m/min.

Assignees

• Jfe Steel Corp

Inventors

• Kobayashi Hirokazu
• Ueno Masayasu
• Toriu Junichi

Classifications

• B05C1/0808

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

• B05D2252/02

  of indefinite length · CPC title

• B05D2202/10

  based on Fe · CPC title

• B05C1/0817 Primary

  characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers (coating roller co-operating with dosing rollers B05C1/0834) · CPC title

• C21D8/1277

  involving a particular surface treatment (C21D8/1294 takes precedence) · CPC title