JPH10249259A - Silicon coating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform coating with silicon without using spraying. SOLUTION: In this coating apparatus, a coating roller 6a immersed in liquid silicon is provided on the way of a running passage feeding a sheet (m) from a supply port 11 to a taking-up port 12 through a roller and the sheet (m) is passed on the coating roller 6a. At this time, the route allowing the sheet to pass the coating roller 6a to run in one direction from the upstream side thereof to the downstream side is set to a reference route and a secondary route is provided along with the reference route and this second route passes the sheet (m) from the downstream side of the coating roller 6a in the reference route to the upstream side and the sheet (m) passes the coating roller 6a to be again guided to the downstream side by direction converting rollers 8, 9, 10. By passing the sheet (m) through the secondary route, the surface opposite to the surface coated in the reference route can be coated without reversing the sheet (m) in the reference route.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a silicon coating apparatus.

[0002]

2. Description of the Related Art Conventionally, a silicone resin (hereinafter simply referred to as silicon) is applied to a base material (sheet) by a spraying method. Liquid silicon is sprayed from a pressure nozzle, and sprayed silicon is sprayed on the sheet. Is going.

[0003]

However, in the case of application by spraying, if the liquid droplets emitted from the nozzle are not uniform, the application state becomes uneven, and the releasability when the application surfaces are overlapped is reduced. bad.

[0004] Further, since the sprayed silicon flies in the air, the coating efficiency is poor, and the silicon that cannot be recovered in the recovery zone is not only wasted, but also if the worker sucks it in, the working environment in terms of sanitation deteriorates. I do.

Accordingly, an object of the present invention is to provide a coating surface which is free from unevenness and has good releasability in the application of silicon, so that the coating operation can be performed in a good sanitary environment for the worker. It is to be.

[0006]

In order to solve the above-mentioned problems, the present invention provides a method in which a substrate is immersed in a liquid silicone resin in the middle of a traveling path for passing a substrate through a roller and transporting the substrate from a supply port to a winding port. A coating roller is provided, and the base material is applied by passing the base material through the roller (claim 1).

In this manner, silicon is uniformly distributed on the surface of the coating roller, and the pressure of the roller is evenly applied to the sheet at any position on the roller surface. Fine particles are evenly spread evenly on the applied silicon, and the thickness of the coating layer is also uniform. Therefore, the releasability at the time of peeling the superposed surface after folding and superimposing the sheets is also good.

In the above arrangement, a path in which the coating roller travels in one direction from the upstream side to the downstream side from the supply port to the winding port is set as a reference path, and a secondary path is provided together with the reference path. The secondary path passes the substrate from the downstream side to the upstream side of the application roller in the reference path, and after the substrate passes through the application roller, is guided downstream by at least one direction change roller. In this case, the base material is caused to travel along the secondary path, so that the front and back sides of the base material in the reference path are inverted with respect to the application roller. Even if it is not provided, the back surface of the surface to be applied in the reference path is in contact with the surface of the application roller, so that the surface can be applied.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, the base material to be applied is a synthetic resin sheet (hereinafter simply referred to as a sheet), and silicon is applied not by spraying but by an apparatus as shown in FIGS.

In this apparatus, as shown in FIG. 1, a plurality of rollers 2, 3a, 3b, 4, 5, and 6a, 6b are provided on a gantry 1 made of steel, and a sheet m is passed through each roller. While running by roller driving, paper is passed through the application roller 6a immersed in the silicon S on the way to apply. As shown in FIG. 2, each roller is provided in parallel and horizontally on one side of the gantry 1.

In FIG. 1, a position of an inlet roller 2 provided diagonally on the upper left side of the gantry 1 is a supply port 11 for the sheet m, and a supply reel (not shown) is provided in front of the supply port 11. A drive roller 3a and a driven roller 3b that rotates in a pair in contact with the drive roller 3a are provided diagonally on the upper right, and this position is the winding port 12 for the sheet m. The drive roller 3a is driven by a belt 3c by a motor M installed on the top plate 1a of the gantry 1. Also, 4 and 5 provided on the left and right side columns in the figure are both direction changing rollers.

A coating roller 6a is provided at the center of the gantry 1 in the height direction.
As shown in FIG. 3, the portion below the rotation axis is immersed in a container 7 storing silicon S. A pressing roller 6 presses the coating roller 6a under the action of a pressing mechanism (not shown) on the upper peripheral surface of the coating roller 6a.
b is provided with its axis parallel to the axis of the application roller 6a.

In order to apply the coating to the sheet m by such an apparatus, first, the entrance roller 2 of the supply port 11 at the upper left of FIG.
, The sheet m is lowered from the entrance roller 2 along the side pillars, and the sheet m is moved in the horizontal direction via the direction changing roller 4 provided near the center of the gantry 1 in the height direction. Is passed between the application roller 6a and the pressing roller 6b.

Then, the sheet m taken out on the downstream side of the application roller 6a is hung on the right-hand direction changing roller shown in FIG.
It is pulled up and brought to the winding opening 12 on the upper right of the figure. At this position, the paper is passed between the driving roller 3a and the driven roller 3b, and is further wound by a winding roller (not shown).

If the sheet m is hung on the rollers in the above-described path and the driving roller 3a shown in the drawing is operated, the sheet m travels from the supply port 11 to the take-up port 12. The application of the silicon S is performed at the position of the application roller 6a. When the silicon S is applied, the sheet m comes into contact with the peripheral surface of the application roller 6a that rotates as the sheet m travels, and is pressed by the roller 6b.
The coating is performed when the silicon S, which wets the peripheral surface of a, comes into contact with the sheet m.

According to such a coating method, unlike the case of spraying, the silicon S wetting the surface of the coating roller 6a is evenly spread on the surface of the sheet m by the pressure of the roller 6b. Since the thickness of the coating layer is also uniform,
When the sheets m are folded and superimposed after the application, the releasability at the time of peeling off the superimposed surface is further improved in the case of spraying. As a matter of course, the worker does not suck the spray-like silicon.

When the sheet m is coated with the above-described apparatus, and the coated surface of the sheet m needs to be changed, the reel on the supply side is turned upside down and set again. Need to be fixed,
Turning over the heavy reel on which the sheet m is wound is extremely labor intensive and time-consuming.

Therefore, in the second embodiment, a configuration is considered in which coating can be performed on the surface opposite to the coating surface in the first embodiment without turning over the reel on the supply side.

As a device for this, as shown in FIG. 4, in the device of the first embodiment, 8, 9 and 10 direction changing rollers are added to the left and right side columns of the gantry 1, respectively. The apparatus is provided with a secondary path through which the direction change rollers 8, 9, and 10 pass. The additional rollers 8, 9, 10 are also provided parallel to and horizontal to one side of the gantry 1, like the rollers 2-5 and 6a, 6b. In FIG. 4, the sheet m traveling on the secondary route is indicated by a dashed line.

In the secondary path, when the above-described path in FIG. 1 is set as a reference path, the sheet m is passed from the downstream side of the reference path to the application roller 6a (6b). Then, the sheet m which has passed through the application rollers 6a (6b) and is taken out on the upstream side of the reference path is used for the direction change rollers 4 of the reference path and the direction change rollers 8 of the secondary path provided thereunder. The paper is passed between the rollers, descends along the side pillar from that position, changes the running direction in the horizontal direction with the lowest direction changing roller 9, and changes the running direction again upward with the direction changing roller 10 on the right side column. Change the winding path 12 of the reference path
The paper is passed through the driving roller 3a and the pair of driven rollers 3b, and is wound by a winding roller (not shown).

When the coating is performed by running the sheet m along the secondary path, the coating roller 6a can be applied to the coating path 6a without turning over the supply side reel when using the reference path. Since the surface opposite to the application surface comes into contact, the surface can be applied. Therefore, since the upper and lower postures of the reel on the supply side can always be kept constant, when applying the surface opposite to the surface to be applied in the reference path,
There is no need to turn over heavy reels.

[0022]

As described above, in the apparatus of the present invention, the coating roller dipped in the liquid silicone resin is provided in the middle of the traveling path for passing the base material through the roller and transporting it from the supply port to the winding port. The roller is applied to the substrate by passing the substrate through the roller.Since the silicon is evenly distributed on the surface of the application roller, the pressure of the roller also applies to the sheet. Since it is applied even at a place, the silicon applied to the surface of the sheet also has fine particles spread uniformly and uniformly, and the thickness of the applied layer becomes uniform. Therefore, the releasability at the time of peeling the superposed surface after folding and superimposing the sheets is also good.

Further, the base material is passed from the downstream side of the coating roller to the upstream side in the reference path of the base material of the conventional coating apparatus, and the base material coming out of the upstream side is again turned to the downstream side by the direction changing roller. Is provided, so that if the paper is passed through this secondary path, the back surface of the substrate to be applied in the reference path is not turned over, that is, the upside-down posture of the supply reel is not turned over. Can be applied.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing a first embodiment.

FIG. 2 is a longitudinal side view showing the first embodiment.

FIG. 3 is a perspective view of a main part showing the first embodiment.

FIG. 4 is a longitudinal sectional front view showing a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stand 2 Inlet roller 3a Driving roller 4,5,8,9,10 Direction changing roller 6a Coating roller 6b Pressure contact roller 7 Container 11 Supply port 12 Winding port m Sheet (base material) S Silicon

Claims (2)

[Claims] 1. A coating roller immersed in a liquid silicone resin is provided in the middle of a traveling path for feeding a substrate through a roller and transporting the substrate from a supply port to a winding port. A silicon coating device that applies paper to a substrate by passing the paper through. 2. The silicon coating apparatus according to claim 1, wherein a path in which the coating roller travels in one direction from an upstream side to a downstream side from the supply port to the winding port is a reference path, A secondary path is provided together with the reference path, and the secondary path passes the substrate from the downstream side to the upstream side of the application roller in the reference path, and after the substrate passes through the application roller, At least one direction change roller is configured to be guided to the downstream again, and by passing the base material through this secondary path, the base path in the reference path is not reversed, and the reference path is not reversed. Wherein the surface opposite to the surface to be coated is applied.