Gravure kiss coater

Patent metadata

Field	Value
Publication number	US-2016250658-A1
Application number	US-201414389449-A
Country	US
Kind code	A1
Filing date	Mar 12, 2014
Priority date	May 24, 2013
Publication date	Sep 1, 2016
Grant date	—

Abstract

A gravure kiss coater 1 includes a paint feeder 30 placed along a small-diameter gravure roll 10 having an outside diameter D in a range of 45-150 mm. The paint feeder 30 includes a doctor blade 32, a case 31, and a coating feed path 34,35. A distal end 32 a of the doctor blade 32 is directed in a direction opposite to a direction of rotation of the small-diameter gravure roll 10, and the small-diameter gravure roll 10 is capable of contacting the substrate S within a range of rotation angles equal to or less than 90° from the distal end 32 a of the doctor blade 32.

First claim

1 . A gravure kiss coater comprising:
a cylindrical small-diameter gravure roll having an outside diameter in a range of 45-150 mm, and having an outer circumferential surface including a coating portion; and a paint feeder extending along the small-diameter gravure roll and feeding paint to the coating portion, wherein while rotation of the small-diameter gravure roll is controlled, a sheet-like substrate is coated with paint by pressing the coating portion against the substrate traveling while being stretched linearly, the paint feeder includes
a doctor blade extending along the small-diameter gravure roll and having a distal end contacting the coating portion moving toward a location at which the coating portion contacts the substrate,
a case supporting the doctor blade and forming a storage space that stores paint, and
a paint feed path through which paint is fed to the storage space,
the distal end of the doctor blade is located so as to contact the coating portion from a direction opposite to a direction of rotation of the small-diameter gravure roll, and the small-diameter gravure roll is capable of contacting the substrate within a range of rotation angles equal to or less than 90° from the distal end of the doctor blade.

2 . The gravure kiss coater of claim 1 , wherein the case supports a seal blade extending along the small-diameter gravure roll and having a distal end contacting the coating portion moving away from the location at which the coating portion contacts the substrate,
the storage space is sealed such that the paint feeder is capable of being horizontally oriented to allow vertical arrangement of the doctor blade and the seal blade, and if the paint feeder is horizontally oriented, at least any one of uppermost and lowermost ends of the paint feeder is located between a pair of tangent lines being each tangent to a corresponding one of upper and lower ends of the small-diameter gravure roll when viewed along a rotation axis of the small-diameter gravure roll.

3 . The gravure kiss coater of claim 2 , wherein
the case includes
a downstream wall portion being continuous with the doctor blade and defining the storage space, and
an upstream wall portion facing the downstream wall portion, being continuous with the seal blade, and defining the storage space,
the paint feed path includes
a liquid feed pipe which has a connection port having one end close to the upstream wall portion, and through which paint is fed to the storage space, and
at least one liquid return pipe which has a connection port having one end close to the downstream wall portion, and through which paint is returned from the storage space, and
an inside diameter of each of the liquid feed pipe and the at least one liquid return pipe is set at a value greater than or equal to ½ of an interval between the downstream wall portion and the upstream wall portion.

4 . The gravure kiss coater of claim 3 , wherein
the at least one liquid return pipe includes two liquid return pipes, the two liquid return pipes are placed at locations corresponding to both end portions of the small-diameter gravure roll, and the single liquid feed pipe is placed midway between the two liquid return pipes.

Assignees

• Fuji Kikai Kogyo Kk
• Toyota Motor Co Ltd

Inventors

• Miura Hidenobu
• Umehara Masakazu

Classifications

• B41F9/10

  Doctors, scrapers, or like devices · CPC title

• B41F31/027

  Ink rail devices for inking ink rollers · CPC title

• B05C1/0808

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

• B05C1/0817

  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

• B05C1/0839

  the work being unsupported at the line of contact between the coating roller and the work · CPC title