JPH04265176A - Coating machine - Google Patents

Abstract

PURPOSE:To produce good coated products without coating defect by providing an in-line wet spray cleaning device between a releasing device and a roll coater so that dust particles and contamination depositing with water, oil, etc., on the surface of a film are removed by the in-line wet cleaning means. CONSTITUTION:The coating machine includes a releasing device 2 which releases a resin film 13, a roll coater 4 to apply a coating material on the resin film 13, a drying device 5 to dry the coating material on the film 13, and a winding device 6 to wind up the coated resin film 13. Further, an in-line wet spray cleaning device 3 is provided between the unwinding device 2 and the roll coater 4. Thereby, dust particles and contamination depositing with water, oil, etc., on the film surface can be removed by in-line wet cleaning, and thus, good coated products without coating defect can be obtd.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] In order to prevent the occurrence of coating defects due to dirt on the resin film surface and adhering dust, the resin film is This relates to a coating machine that performs in-line wet cleaning and then coating.

0002

[Prior Art] When coating a resin film, methods are known to remove dust from the film surface, such as removing static electricity using ionized air or a static eliminating bar, and using a combination of ultrasonic air and vacuum. The particles are water,
There is a drawback that dust cannot be removed if it adheres to the film surface via oil or the like. It is also possible to wet-clean the resin film off-line and then apply the coating, but there is a risk of contamination from the outside when the resin film is stored after cleaning until coating.

0003

[Problems to be Solved by the Invention] The present invention was developed in view of the current situation, and is a method for removing dust particles and dirt adhering to the film surface through water, oil, etc. by in-line wet cleaning. It is an object of the present invention to provide a coating machine that can produce a good coated product without coating defects.

0004

[Means for Solving the Problems] The present invention provides an unrolling device for unrolling a resin film, a roll coater for applying a coating agent to the resin film, and a drying method for drying the coating agent applied to the resin film. A coating machine equipped with a drying device and a winding device for winding up a coated resin film, characterized in that it has an in-line wet cleaning device between the winding device and the roll coater. The wet cleaning device used in the present invention is a spray cleaning device.

[0005] The spray cleaning device used in the present invention includes:
It consists of at least three tanks: a spray cleaning tank using a solvent to remove oils attached to the resin film, a spray cleaning tank using pure water to remove residual dust particles, and a strength drying tank to dry moisture. Depending on the type of dust particles and dirt attached to the film surface, a spray cleaning tank using a weak alkaline solution to remove organic matter, a spray cleaning tank using a weak acid solution to remove inorganic matter, or a spray cleaning tank using a weak acid solution to remove inorganic matter, It is also possible to put it in front of a spray cleaning tank using

[0006] As the solvent used in the present invention, any solvent that can be tolerated by the resin film to be coated can be used, but it is particularly preferable to select it from isopropyl alcohol and acetone. Since the pure water used in the present invention is used to remove residual dust particles in the final spray cleaning tank, it is necessary to control particles to the extent that coating defects do not occur in the coated product.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings. The drawings show an embodiment of a resin film coating machine to which the present invention is applied; FIG. 1 is a schematic side view thereof, and FIG. 2 is a side view of its essential parts.

As is clear from FIG. 1, the coating machine 1 includes an unwinding device 2 for unrolling a resin film, a cleaning device 3 for cleaning the resin film, and a roll coater for applying a coating agent to the resin film. 4, a drying device 5 that dries the coating agent applied to the resin film, and a winding device 6 that winds up the applied resin film. The resin film 13 unrolled from the unrolling device 2 is transferred to the cleaning device 3.
After the oil is removed by the solvent ejected from the spray nozzle 8 in the spray cleaning tank 7 using a solvent, the spray nozzle 1 is removed in the spray cleaning tank 9 using pure water.
After removing residual dust particles with pure water spouted from 0 and drying the moisture with clean heated air blown from air nozzle 12 in forced drying tank 11, roll coater 4
A coating agent is applied, and after the coating agent is dried and cured in a drying device 5, the resin film is rolled up in a winding device 6.

[0009]

Effects of the Invention As is clear from the above description, according to the present invention, before coating the resin film with a coating agent using a roll coater, the resin film is wet-cleaned in-line, thereby improving the coating properties. It becomes possible to manufacture coating films without defects.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an outline of a coating machine of the present invention.

FIG. 2 is a side view showing the main parts of a cleaning device for a coating machine according to the present invention.

Claims (1)

[Claims] Claim 1: A rolling device for rolling out a resin film; a roll coater for applying a coating agent to the resin film; a drying device for drying the coating agent applied to the resin film; 1. A resin film coating machine comprising a winding device for winding up a resin film, the machine comprising an in-line wet spray cleaning device between the winding device and the roll coater.