JPS6226828B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for double-sided processing of a base material, and more specifically, the present invention relates to a method and apparatus for processing both sides of a long base material such as cloth, paper, film, etc. through a single rotary screen unit. The present invention relates to a method and apparatus for processing such as printing, coating, etc.

Conventionally, for various long sheets or rolls such as fabric, paper, film, metal foil, laminate, etc.
Plain dyeing by applying liquid, paste, powder, foam, etc.
2. Description of the Related Art Various devices are used for various processing purposes such as pattern printing, resin processing, etc., and rotary screen devices are increasingly being used as such processing devices.

All rotary screen devices for processing are intended for processing only one side of the substrate, and in order to process both the front and back sides of the substrate, it is generally necessary to pass the substrate through the same device twice. This was necessary and resulted in an unavoidable increase in processing costs.

On the other hand, in the field of processing, there is a strong desire to simultaneously perform the same or different types of processing or printing on both sides of the base material, or a combination of coating and printing. There is a strong desire for simultaneous pattern coating and adhesive application to the backside.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method and apparatus that can simultaneously perform processing such as printing and coating on both sides of a long base material such as cloth, paper, or film through a single rotary screen. be.

Another object of the present invention is to provide a method and apparatus capable of simultaneously applying the same or different types of coatings or prints or a combination of coatings and prints to both sides of a substrate.

Still another object of the present invention is to provide a double-sided processing method and apparatus in which the processed surface of one side is transported without coming into contact with other objects until it undergoes post-processing such as heat treatment or cold treatment.

According to the present invention, one surface of the base material is attached to the nip position of a single rotary screen unit having a first mesh screen and a second mesh screen along the axial direction. After feeding the substrate in contact with a mesh screen and processing it through the mesh screen, and changing the direction of the substrate that has been processed on one side, the other side of the substrate is connected to a second mesh screen. Provided is a double-sided processing method for a substrate, characterized in that the substrate is fed to a nip position so as to be in contact with each other, and the other side is also processed.

According to the present invention, there is further provided a rotary screen including a first circumferential mesh screen and a second circumferential mesh screen along the axial direction, and a substrate is nipped between the rotary screen and the rotary screen. a main roller, a squeegee disposed within the rotary screen, feeding the substrate to a nip position between the first mesh screen of the rotary screen and the main roller so that one side of the substrate is in contact with the mesh screen; A first conveying system that pulls out the base material processed on one side from the nip position, and a second mesh screen of the rotary screen that pulls out the base material from the nip position; a second conveying system for feeding the substrate into contact with the screen and pulling the substrate processed on the other side from the nip position; and a second conveying system provided between the first conveying system and the second conveying system; There is provided a double-sided processing device characterized by comprising a turn roller for reversing the transport direction of a base material and the front and back sides of the base material.

The present invention will be described in detail based on specific examples shown in the accompanying drawings.

FIG. 1 is a side cross-sectional view of the device of the present invention, and FIG. 2 is a plan view of the same, in which the front surface of the base material 5 is the A side, and the back surface is the B side, and the thickness is exaggerated to represent this. (Of course, the front and back surfaces and the A and B sides are not necessarily limited to this relationship.) In FIG. 1, a main roller 2 is rotatably supported on a frame 1 provided on both sides of the device,
It is rotated in the direction of the arrow by a known method (not shown). The main roller 2 has a length spanning the entire width of the device as shown in the plan view of FIG. A synchronous rotational drive is provided.

A base material 5 such as cloth or paper is unwound from the roll 5a along the first conveyance path C1, passes through guide rollers 6 and 7, and a widening roller 8, and then is pressed and conveyed to the main roller 2 by a nip roller 9. During this time, coating or printing is applied to the A side of the base material 5 by a rotary screen 3 provided on the side of the main roller and a squeegee 4 mounted inside the rotary screen so that the pressure can be adjusted.

The base material 5 that has passed through the rotary screen section is lifted diagonally upward away from the main roller 2, passes through the guide roller 10, and becomes horizontal.
The direction is changed by the two turn rollers 11 and 12, and the sheet moves horizontally along the second conveyance path C2 in the direction of the arrow. Furthermore, it is directed downward from above by guide rollers 13 and 14, reaches widening roller 8, and reaches the same surface as conveyance path C1. Thereafter, it is conveyed from the nip roller 9 by the main roller 2, and the B side is subjected to the necessary processing and processing again by the rotary screen 3 and squeegee 4, and then transported to the rear. Book turn roller 1
1 and 12, the front and back sides, that is, the A side and the B side, are reversed and processed in the first conveyance path C1, and processed into the processed side, that is, the B side, which is the back side of the A side. , processing will be performed.

The base material 5 processed and processed into the A side in the first conveyance path C1 is moved to the second conveyance path C2 by the above-mentioned conveyance path, and is dried by the drying device 15 while being conveyed above the apparatus. Furthermore, if necessary, the material is cooled by a cooling device 16 between the guide rollers 13 and 14 so as not to interfere with subsequent processing using a rotary screen.

As mentioned above, after the base material 5 is subjected to processing such as coating or printing on the A side in the first conveyance path C1, the direction and front and back are reversed, and the same or different type is applied to the B side in the second conveyance path C2. This processing is performed by a single rotary screen device 3.

As described above, the rotary screen 3 has a length extending from the first conveyance path C1 to the second conveyance path C2, and has an opening W1 for the first conveyance path C1 and an opening W2 for the second conveyance path C2. (circumferential mesh screen), and other parts are shielded by a known method such as a photosensitive coating. Further, by providing a partition 17 in the center of the rotary screen 3 and the squeegee 4, the front and back sides can be processed with completely different types, or with the partition 17 removed, they can be processed with the same quality.

Furthermore, after the A side is processed in the first transport path C1, the route described above is transferred to the second transport path C2, and the B side is processed.
During this time, drying is performed above the second conveyance path C2. During this time, the unprocessed surface B is the guide roller 10, the turn roller pair 11, 12,
Immediately after the processing, the processed A side is conveyed, changed direction, and reversed by contacting the guide rollers 13, 14 and the width expanding roller 8.
There is nothing that comes into contact with the surface B until just before it is processed in the second conveyance path C2, and only after it has been sufficiently dried and cooled does it come into contact with the main roller 2. Even if the surfaces are completely different, it is possible to sufficiently apply the characteristics of each.

A cleaning device 18 is provided on the main roller 2 to avoid the conveyance path of the substrate 5, and a brush 19 cleans the main roller surface.
It is possible to drain the water by using 0, and it is also possible to wash and dehydrate the processing liquid that has adhered to the base material in excess of the width of the base material or that has penetrated through the base material.

[Brief explanation of the drawing]

FIG. 1 is a side sectional layout view of the double-sided processing apparatus of the present invention, and FIG. 2 is a plan layout diagram of the apparatus shown in FIG. 1... Frame, 2... Main roller, 3... Rotary screen, 4... Squeegee, 5... Base material,
6...Guide roller, 7...Guide roller, 8...
Widening roller, 9... Nip roller, 10... Guide roller, 11... Turn roller, 12... Turn roller, 13... Guide roller, 14... Guide roller, 15... Drying device, 16... Cooling device,
17... Partition, 18... Cleaning device, 19... Brush,
20...Mangle roller, W1...Mesh screen for A side, W2...Mesh screen for B side,
C1...first conveyance path, C2...second conveyance path.

Claims (1)

[Claims] 1. At the nip position of a single rotary screen unit having a first mesh screen and a second mesh screen along the axial direction, one surface of the base material The substrate is fed so as to be in contact with a mesh screen and processed through the mesh screen, and after the substrate which has been processed on one side is turned around and turned over, the other side of the substrate is transferred to the second side. A method for processing both sides of a base material, characterized in that the material is supplied to a nip position so as to be in contact with a mesh screen, and the other side is also processed. 2. A patent for transporting a base material that has been processed on one side while supporting the side opposite to the processed side, changing the direction and reversing the front and back sides, and supplying it to the position of a second mesh screen. The method according to claim 1. 3. The method according to claim 1, in which the same or different types of coating or printing or a combination of coating and printing are performed simultaneously through the first mesh screen and the second mesh screen. 4. A rotary screen including a first circumferential mesh screen and a second circumferential mesh screen along the axial direction, a main roller that nips the substrate between the rotary screen, and the rotary screen. A squeegee disposed within the rotary screen feeds the base material to the nip position between the first mesh screen and the main roller so that one side of the base material is in contact with the mesh screen, and processes one side of the base material. a first conveying system that pulls out the processed substrate from the nip position, a nip position between the second mesh screen of the rotary screen and the main roller so that the other surface of the substrate is in contact with the mesh screen; a second conveying system for feeding and pulling out the substrate processed on the other side from the nip position; and a second conveying system provided between the first conveying system and the second conveying system and configured to A double-sided processing device characterized by comprising a turn roller for reversing the front and back sides.