JP2003305394A - Gravure coating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gravure coating device provided with a gravure plate cylinder and a furnisher roller brought into contact therewith, in which sideward splash of coating liquid from the contact part of the cylinder and the roller is eliminated, adhesion of the liquid to end faces and shafts is not caused even in a high-speed operation, and there is no spoilage of surroundings and a material to be coated. <P>SOLUTION: In the gravure coating device, the length L<SB>1</SB>of the plate surface of the rotative gravure plate-cylinder 10, and the length L<SB>2</SB>of the surface of the furnisher roller 20 are almost the same, and the ends 11, 21 thereof are almost aligned with each other. Grooves 22 extending in the circumferential direction are provided somewhat inside of both ends 21 of the furnisher roller 20. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravure type coating apparatus, and more particularly, to a gravure provided with a furnisher roller for supplying a coating liquid to a gravure plate cylinder. The present invention relates to a coating device. 2. Description of the Related Art Conventionally, as one type of a gravure type coating apparatus, for example, as shown in a side view of FIG. 3, a rotating gravure plate cylinder (10) and a gravure plate cylinder (10) are covered. An impression cylinder (14) for pressing an application substrate (5), an application liquid pan (12) for containing an application liquid (6), and a furnisher roller (10) for supplying an application liquid to a plate surface of a gravure plate cylinder (10). 20) and a doctor blade (16) that scrapes off the coating liquid other than the cells on the plate surface as required, and is also applied to the application of an adhesive or the like or the gravure printing using a printing ink. I have. [0003] The gravure plate cylinder (10) and the furnisher roller (20) are formed in a cylindrical shape having the same diameter over the entire length, for example, as shown in the front view of FIG. As shown in the front view of FIG. 4 (b), the surface length (H2) of the furnisher roller (20) is longer than the plate surface length (H1) of (10). ), The length (H1) of the plate surface is equal to the length (H2) of the surface of the furnisher roller, and their ends coincide. [0004] However, in the gravure coating apparatus having the above-mentioned conventional configuration, for example, FIG.
As shown in (a), when the surface length (L2) of the furnisher roller (20) is longer than the plate surface length (L1) of the gravure plate cylinder (10), the gravure plate cylinder ( Excess coating liquid scatters in a lateral direction from a contact portion (24) between the 10) and the furnisher roller (20), and furthermore, the end surface (10a) of the gravure plate cylinder (10) and the surface of its shaft (10b). There is a problem that it adheres to the surface and splashes, and also stains its surroundings and coating materials (printed materials and the like). As shown in FIG. 4B, for example, when the length (L1) of the plate surface of the gravure plate cylinder (10) is equal to the length (L2) of the surface of the finisher roller (20). In the same manner, the surplus coating liquid scatters laterally from a contact portion (24) between the gravure plate cylinder (10) and the furnisher roller (20), and furthermore, the gravure plate cylinder (1)
0), the surface of the shaft (10b) and the end surface (20a) of the furnisher roller (20).
There is a problem in that it adheres to the surface of the shaft (20b) and splashes and stains the periphery thereof and the coating material (printed material and the like). As a solution to the above problem, for example, as proposed in Utility Model Registration Publication No. 2576954, a furnisher roller is provided at a position facing the edges of both ends of the plate surface of the plate cylinder in a circumferential direction. It has an annular groove that extends,
There is a rotary printing press in which the edge of the printing plate is located between the edges on both sides of each groove. However, in the rotary printing press having the above structure, the problem that ink is scattered in the horizontal direction from the contact portion between the plate cylinder and the furnisher roller is solved. The problem that the ink is transmitted to the end surface of the plate cylinder and splashes at higher speeds, and contaminates the surrounding area and web-like printed matter, has not been completely solved. As another solution to the above problem, for example, as proposed in JP-A-2001-58394,
A nozzle type ink supply device, which is smaller than the outer diameter of the furnisher roller at both ends of the furnisher roller for supplying ink from the device, facing the edge portions of both ends of the plate surface of the plate cylinder. A cylindrical portion having a diameter is provided, and grooves extending in the circumferential direction are formed, and the edge of the printing plate is positioned between the grooves, that is, the edges on both sides of the cylindrical portion, or the fan of the cylindrical portion is disposed. There is a rotary printing press in which the edge of the printing plate is positioned so as to coincide with the edge which is the end face opposite to the center of the shear roller. However, in the rotary printing press having the above-described structure, since the ink is supplied by the nozzle system, excess ink is reduced, so that there is no problem that the ink scatters in the lateral direction from the contact portion between the plate cylinder and the finisher roller. However, the ink that flows down to the cylindrical part having a diameter smaller than the outer diameter of the furnisher roller is transmitted through the small-diameter cylindrical part by the plate cylinder and the furnisher roller that rotate at high speed, and the ink of the plate cylinder and the furnisher roller is formed. The problem that ink splashing phenomenon occurs on the end faces and their shafts and contaminates the periphery and web-like printed matter has not been completely solved. The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a rotating gravure plate cylinder and a furnisher roller for supplying a coating solution in contact with the cylinder. In a gravure coating machine, the coating liquid does not scatter in the horizontal direction from the contact portion between the gravure plate cylinder and the furnisher roller, and the coating liquid is applied to the end surface and shaft of the gravure plate cylinder, the furnisher roller even at high speed operation. It is an object of the present invention to provide a gravure coating apparatus which does not adhere and does not stain the peripheral and web-like coating materials. In order to achieve the above object, according to the first aspect of the present invention, there is provided a rotating gravure plate cylinder and a furnisher roller for supplying a coating liquid in contact with the cylinder. In the gravure coating apparatus, the gravure plate cylinder and the furnisher roller have substantially the same surface length,
The gravure coating apparatus has a configuration in which the ends thereof substantially coincide with each other, and a groove extending in the circumferential direction is formed slightly inside both ends of the furnisher roller. . According to the first aspect of the present invention, the gravure plate cylinder and the furnisher roller have substantially the same surface length, and their ends substantially coincide with each other. Since a groove extending in the circumferential direction is formed slightly inside, it is easy for excess coating liquid to flow into this groove during operation, and the flowing coating liquid flows over the groove even during high-speed operation. Since it is blocked by a certain gravure plate cylinder and stops splashing of the coating solution, it does not adhere to the end surface of the gravure plate cylinder, its shaft, the end surface of the furnisher roller or its shaft, and therefore, the periphery or web-like It is possible to provide a gravure coating apparatus which does not have a problem of soiling the coating. An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic front view showing an example of the gravure coating apparatus of the present invention, and FIG.
FIG. 3 is an enlarged sectional view showing an example of the main part. According to the present invention, as shown in the schematic side view of FIG. 3, for example, a gravure plate cylinder (10) and a furnisher for supplying a coating liquid (6) from a coating liquid pan (12) to the surface thereof. A roller (20) and an impression cylinder (1) for pressing a web-like substrate (5) such as a running film against the gravure plate cylinder (10) to transfer the coating liquid on the surface thereof.
And 4) a gravure coating apparatus (1). In the present invention, as shown in FIG. 1, for example, the length (L1) of the plate surface of the gravure plate cylinder (10) is used.
And the length of the surface of the furnisher roller (20) (L
2) are identical and their ends (11, 21) coincide, and extend circumferentially slightly inside both ends (21) of the furnisher roller (20). This is a gravure coating apparatus in which a groove (22) is engraved. The groove (22) engraved in the circumferential direction on the surface of the finisher roller (20) will be described in more detail. For example, as shown in an enlarged sectional view of FIG. A width (W) and a depth (D) extending in the circumferential direction at a position of a short length (L3) inside both ends (21) of the furnisher roller (20) made of an elastic material such as rubber. Groove (22) is engraved, and the size of the groove (22) is
For example, the surface length (L2) shown in FIG. 1 is 1300 mm and its outer diameter (φ) is 150
2 mm, the length (L3) shown in FIG. 2 is about 10 mm, the groove width (W) extending in the circumferential direction is about 20 mm, and the groove depth (D) is ,
When the groove (22) is about 10 mm, this is a suitable value as the coating liquid can easily enter the groove (22) and flow in the circumferential direction. According to the gravure coating apparatus having the above configuration, as shown in FIG.
The coating liquid accumulated in the contact portion (24) between the plate surface of (0) and the surface of the furnisher roller (20) is removed from both ends (21).
It goes into the groove (22) that is engraved slightly inside,
Since it flows in the circumferential direction and returns to the coating liquid pan (not shown), the problem of scattering from the contact portion (24) can be obtained as a gravure coating apparatus. Further, as shown in FIG. 1, the coating solution flowing in the groove (22) as described above is blocked by the gravure plate cylinder (10) in contact with the upper part of the groove (22). So that even during high-speed operation,
Therefore, the end surface (10a) of the gravure plate cylinder (10), its shaft (10b), and the furnisher roller (2)
A gravure coating apparatus which does not adhere to the end face (20a) or its shaft (20b) of FIG. 0) and does not have a problem of smearing the periphery thereof or a web-like coating material (not shown). The coating liquid applied to the gravure coating apparatus of the present invention is not particularly limited as long as it is a liquid. For example, for a dry lamination for coating a plastic film on a substrate (5) to be coated. Adhesives, transfer materials for transfer ribbons, sealants applied to the innermost surface of packaging bags, or magnetic materials for prepaid cards, etc., and also applicable to gravure printing ink for rotary printing, etc. It is. As described above, the present invention has the following effects. That is, in a gravure coating apparatus provided with a rotating gravure plate cylinder and a furnisher roller for supplying a coating solution in contact with the gravure plate cylinder, the gravure plate cylinder and the furnisher roller have substantially the same surface length, The parts are substantially coincident with each other, and grooves extending in the circumferential direction are engraved slightly inside both ends of the furnisher roller, so during operation of the gravure coating apparatus, the gravure plate cylinder and Excess coating liquid at the contact portion with the furnisher roller easily flows into this groove, and the flowing coating liquid is blocked by the gravure plate cylinder at the top of this groove even at high speed operation, Since the coating solution is prevented from splashing, it does not adhere to the end surface of the gravure plate cylinder, its shaft, and the end surface of the finisher roller or its shaft, and therefore, does not adhere to the periphery. Possible to provide a gravure coating apparatus having no problem dirty or web-like coating material. Therefore, the present invention exerts an excellent practical effect in a gravure coating apparatus, particularly in a gravure coating apparatus having a furnisher roller for supplying a coating liquid to a gravure plate cylinder.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows one embodiment of a gravure coating apparatus of the present invention, and is a schematic front view of a part thereof. FIG. 2 shows an embodiment of the gravure coating apparatus of the present invention, and is an enlarged cross section of a main part of FIG. FIG. 3 shows an embodiment of the gravure coating apparatus of the present invention, and is a schematic side view of the whole. FIGS. 4A and 4B show an example of a conventional gravure coating apparatus, in which FIG. 4A is a front view showing the configuration of a plate cylinder and a furnisher roller, and FIG. It is another front view which shows the structure of a shear roller. [Description of Signs] 1 {gravure coating device 5} substrate 6 to be coated 6 coating liquid 10} gravure plate cylinder 10a 端 gravure plate cylinder end face 10b ‥‥ gravure plate cylinder shaft 11 ‥‥ gravure plate End 12 of the body ‥‥ Coating liquid pan 14 ‥‥ Impression cylinder 16 ‥‥ Doctor blade 20 ‥‥ Fanisher roller 20a ‥‥ Fanisher roller end face 20b ‥‥ Fanisher roller shaft 21 ‥‥ Fanish Shear roller end 22 ‥‥ groove 24 ‥‥ contact portion D ‥‥ groove depth L1 ‥‥ gravure plate cylinder plate length L2 ‥‥ furnisher roller surface length L3 ‥‥ furnisher roller Length from end to groove W 溝 groove width φ ‥‥ outer diameter of furnisher roller

Claims (1)

Claims: 1. A gravure coating apparatus provided with a rotating gravure plate cylinder and a furnisher roller for supplying a coating liquid in contact with the gravure plate cylinder. A gravure coating characterized in that it has substantially the same surface length and their ends substantially coincide with each other, and a groove extending in the circumferential direction is engraved slightly inside both ends of the finisher roller. apparatus.