JPS61263754A - Method for peeling ballard plating on gravure roll - Google Patents

Abstract

PURPOSE:To enable a plating to be easily removed with use of a knife or the like without imparting a flaw, deformation or interior strain to a substrate plating or a roll substrate, by a method wherein Ballard plating is conducted after adhesion of a non-conductive member having a curved trimming portion, and the reversely shaped Ballard plated part to the curved trimming portion in shape is peeled, and the peeling ranges the whole plating. CONSTITUTION:A non-conductive adhesive tape 4 of an appropriate form having a radially directed curved trimming portion 4a is adhered on the portion on a roll end surface 1 to be applied Ballard plating. Ballard plating (copper plating) 5 is conducted; while a chuck hole is chucked by an energized base material C on the plating device side to ensure the prevention of infiltration of intensifier into the inside, and the roll is rotated with being immersed in the intensifier. After completion of printing, the peeling of the Ballard plating is started from a plated portion 5a of peninsular-shape which is higher than the adhesive tape 4 to obtain a peeled pieced. The peeled piece is divided into two by a notch 6. The peeling ranges over the whole plating by a method in which the each piece is pinched by a pench and the tear is so enlarged as to open the notch 6 and further as to peel the each piece continuously.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for removing Ballard plating from a gravure plate-making roll.

<Conventional technology> Conventionally, the peeling of the Ballard plating on the gravure plate-making roll after printing was done by applying a chisel to the edge of the Ballard plating on the end of the roll and hitting it with a chisel to create a peeling on the edge of the Ballard plating. I grab it on the bench and widen the tear so that it doesn't break off.

In this case, if you make one strip and try to tear it apart, the strip will be interrupted and you will have to make another strip at the edge of the Ballard plating on the end face of the roll. Therefore, if you make two strips of strips next to each other and open them at the same time so that there is a tear in between, you can successfully peel them off.

However, when removing Ballard plating using this method, the chisel causes scratches, deformation, and internal distortion to the base plating and roll base material of Ballard plating, which leads to a decrease in the number of times the roll can be used. Ta. Also,
Removing Ballard plating required skill.

<Object of the Invention> The present invention has been devised in view of the above-mentioned points, and it is possible to easily peel off the edges of Ballard plating without using a chisel and without any skill, and to use the base plating and roll base material of Ballard plating. To provide a method for removing Ballard plating from a gravure plate-making roll without causing scratches, deformation, or internal distortion.

<Structure of the Invention> The method for peeling off Ballard plating on a gravure plate-making roll of the present invention includes: attaching a non-conductive member of an appropriately shaped shape having a radially oriented convex edge to a portion of the end face of the roll where Ballard plating is to be performed. Ballard plating is performed after the printing is completed, and after printing is completed, the Ballard plating is peeled off from the edge bay part to form a peeled piece, and this is used as a starting point to spread the tear and apply peeling to the entire surface. It is something.

FIRST EMBODIMENT> FIG. 1 is a front view of the end surface of a gravure plate-making roll for explaining a method for peeling off Tuberado plating on a gravure plate-making roll according to a first embodiment of the present invention, and FIG. It is a sectional view taken along ■-■ in FIG.

Reference numeral R indicates a gravure plate-making roll at the stage where the base copper plating is coated with acelenic acid or silver, that is, at the stage immediately before Ballard plating is applied. In detail, a base plating (copper plating) of about 70 to 80 microns is applied to a roll base material made of iron or aluminum, cylindrical polishing is performed, puff polishing is performed, and then acelenic acid or silver is coated. It is something.

Reference numeral 1 is the end face of the roll, and reference numeral 2 is the chuck hole in the end face of the roll. As shown in FIG. 2, when the roll R is subjected to Ballard plating, the chuck hole 2 on the end face of the roll R is chucked by the current-carrying support C on the plating equipment side, and the end face of the roll H is chucked. The seal ring is in contact with the seal cylinder to prevent the plating liquid from penetrating inside, and in this state Ballard plating (copper plating) is performed while being immersed in the plating liquid and rotated. In FIG. 1, an annular portion 3 indicated by hatching between two chain lines indicates a portion where the seal cylinder contacts and seals the end and surface of the roll H. Therefore, the area outside the annular portion 3 of the roll end face 1 is the part to which Ballard plating is applied, and the peeling of the Ballard plating is performed from the roll end face.

To remove the Ballard plating, a non-conductive adhesive tape 4 of an appropriate shape having a radially oriented rim portion 4a is applied to the portion of the roll end face 1 where the Ballard plating is to be performed. Then, as mentioned above, the chuck hole is chucked by the special energization support C on the plating equipment side, and the seal ring of the seal cylinder is in contact with the end face of the roll R, so that the plating solution does not infiltrate inside. Ballard plating (copper plating) while being immersed in plating solution and rotating.
When this is done, Ballard plating is not applied to the upper surface of the adhesive tape 4, and the edged bay part 4a has a plated part 5a having the opposite shape, that is, a peninsular shape, and the periphery of the plated part 5a is where the plating current is concentrated. This results in thick plating. This adhesive tape 4 is left on at least until the plate is finished with chrome plating to improve printing durability.For this reason, the adhesive tape 4 is selected to be resistant not only to plating solutions but also to etching solutions. There is a need. Then, when peeling off the Ballard layer 5 after printing, the Ballard plating is peeled off from the peninsula-shaped plated portion 5a that is higher than the adhesive tape 4 to form a peel-off piece, and the ballard plating is peeled off as shown by the dotted line. Cut a cut 6 into two pieces, grasp each piece with pliers, open the cut 6, and widen the tear so that each piece is peeled off uninterrupted to apply peeling to the entire piece. Note that if the adhesive tape 4 has sufficient adhesion, it may be replaced after plate making and printing have been performed several times.

In addition, in the above case, if two adjacent edging bay parts 4a are provided and two adjacent peninsula-shaped raised Ballard plated parts are formed, which are opposite to these, the above-mentioned cuts 6 can be made. This is more preferable because it saves the effort of making two pieces.Furthermore, a large number of edging bay parts 4a may be arranged in an annular manner on the roll end surface l.

Second Embodiment FIGS. 3(a) and 3(b) show portions of the end surface of a gravure plate-making roll at different stages for explaining a method for removing Ballard plating on a gravure plate-making roll according to a second embodiment of the present invention. It is a front view.

FIG. 3(a) shows an appropriately shaped adhesive tape 4 having a edging bay part 4a with an opening lower a facing in the radial direction as in the first embodiment, on the part of the roll end surface 1 where Ballard plating 5 is to be performed.
A mask 7 having the same shape as shown in FIG. FIG. 3(b) shows the state in which Ballard plating was applied after the mask was peeled off. The hatching is the area where the Ballard plating 5 is applied, and as in the first embodiment, the peninsula-shaped plated part 5a is raised and formed, so when the Ballard plating 5 is to be peeled off, it must be peeled off from here. .

Third Embodiment FIGS. 4(a) and 4(b) show portions of the end surface of a gravure plate-making roll at different stages for explaining a method for removing Ballard plating on a gravure plate-making roll according to a third embodiment of the present invention. They are a front view and a partial sectional view.

FIG. 4(a) shows a suitably shaped part of the roll end surface l to be subjected to Ballard plating, which has two adjacent edging bays 9, 9 oriented in the radial direction, which are formed in advance at the stage of manufacturing the base roll. An extremely shallow recess 8 is provided. Figure 4 (
b) shows a state in which Ballard plating 5 is applied after a non-conductive paint film, printed film or powder plasma spray film 10 has been applied to the recess 8. Two peninsula-shaped Ballard plated portions 5a are formed which are larger than the recessed portion 8 and are opposite in shape to the above-mentioned bay portion.

Therefore, when the Ballard plating 5 is to be peeled off, it is to be peeled off from this point.

<Effects of the Invention> According to the method for peeling off Ballard plating on a gravure plate-making roll of the present invention as described above, a suitably shaped non-contact having a radially oriented edged portion is formed on the portion of the end face of the roll where Ballard plating is performed. Ballard plating is performed after applying a conductive material, and after printing is completed, the Ballard plating part that is raised in the shape of a peninsula, which is the opposite of the shape of the edging bay part, is peeled off, and this is used as a starting point to spread the tear. Since the plating current is concentrated on the periphery of the peninsular shape, thick plating can be obtained, so it can be easily peeled off with a knife or the like without using a chisel.
For this reason.

The edges of Ballard plating can be easily peeled off without any skill, and there is no damage, deformation, or internal distortion to the base plating or roll base material of Ballard plating, and it is possible to remove the edges of Ballard plating from conventional gravure plate rolls. Superior to peeling methods.

[Brief explanation of drawings]

FIG. 1 is a front view of the end surface of the gravure plate-making roll for explaining the method for peeling off Ballard plating on the gravure plate-making roll of the first embodiment of the present invention, and FIG. FIG. FIGS. 3(a) and 3(b) are partial front views of the end face of the gravure plate-making roll at different stages for explaining a method for removing Ballard plating on the gravure plate-making roll according to the second embodiment of the present invention. FIGS. 4(a) and 4(b) are partial front views and partially enlarged views of the end face of the gravure plate-making roll at different stages for explaining a method for peeling off the Ballard plating of the gravure plate-making roll according to the third embodiment of the present invention. FIG. R... Gravure plate-making roll at the stage immediately before Ballard plating, 1... Roll end surface, 2... Chuck hole on hot roll end surface, 4φ... Adhesive tape, 4a-- Edging bay, 5... Ballad plating. 5aI1110 Ballard plated peninsular plated part on the end face. 7... mask, 7a... opening, 8-... recessed part. 911・Shell edging bay, lO・・Shell non-conductive paint film, printed film or powder plasma spray film. Patent applicant Think Laboratory Co., Ltd. - Figure 1 Figure 2

Claims (5)

[Claims] (1) On the part of the roll end face where Ballard plating is performed,
Ballard plating is applied to a non-conductive member having an appropriately shaped border facing in the radial direction, and after printing is finished, the ballad is raised in the shape of a peninsula, which is the opposite of the shape of the border bay. A method for removing Ballard plating from a gravure printing roll, which is characterized by peeling off the plated part and using it as a starting point to spread the tear and cause the peeling to occur over the entire surface. (2) On the part of the roll end face where Ballard plating is performed,
As the non-conductive member, a suitably shaped non-conductive adhesive tape having a radially oriented edging bay is used, and after printing is completed, the ballad is raised in the shape of a peninsula, which is the reverse of the shape of the edging bay. A method for removing Ballard plating from a gravure plate-making roll according to claim 1, wherein the plated portion is removed. (3) On the part of the roll end face where Ballard plating is performed,
After applying a mask having an appropriately shaped aperture having the above-mentioned radially oriented edged concave portion and applying or printing a non-conductive paint as the above-mentioned non-conductive member to the aperture of the mask, Ballard of the gravure plate-making roll according to claim 1, wherein Ballard plating is applied after peeling off the mask, and after printing is completed, the paint is peeled from the Ballard plated part of the peninsular shape which is the opposite of the shape of the above-mentioned bay part. How to remove plating. (4) On the part of the roll end face where Ballard plating is performed,
An extremely shallow recess of an appropriate shape having a radially oriented convex edge is provided in advance, and the recess is coated with a non-conductive paint film, a printed film, or a powder plasma spray film as the non-conductive member. 2. A method for removing Ballard plating from a gravure plate-making roll according to claim 1, wherein the Ballard plating is removed from a peninsula-shaped Ballard plating portion which is raised above the concave portion and is opposite to the shape of the bay portion. (5) A method for removing Ballard plating from a gravure plate-making roll according to any one of claims 1 to 4, in which a plurality of Ballard plated portions are provided in a peninsular shape that is reversed from the shape of the edging bay. .