JP2008264629A - Ultraviolet mirror coating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultraviolet mirror coating apparatus in which the displacement of a printing paper does not occur during the transportation in the ultraviolet mirror coating apparatus and the printing paper after mirror coating is easily peeled off from a film. <P>SOLUTION: The printing paper coated with an ultraviolet curing type resin coating material, clamped at the tip by a holding claw 12 of a holding bar 11 attached to a transportation conveyer 7 and laminated with a film on the upper surface is transported in the ultraviolet mirror coating apparatus. The ultraviolet curing type resin coating material on the printing paper is cured by the irradiation with the ultraviolet light from an ultraviolet light irradiation apparatus 4 to carry out the gloss finish or the gloss finish and the transfer of a pattern. The printing paper does not cause the displacement during being passed through the ultraviolet mirror coating apparatus because the printing paper is clamped by the holding claw 12 of the holding bar 11. When the film 1 is separated from the transporting conveyer 7, the printing paper clamped by the holding claw 12 continues to move with the transporting conveyer 7 and is surely peeled off from the closely laminated film. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention applies an ultraviolet curable resin coating to a printed paper surface, superimposes a film on the coated surface, and irradiates the ultraviolet curable resin paint on the printed paper surface with ultraviolet rays through the film to form an ultraviolet ray. The present invention relates to an ultraviolet mirror coating apparatus for applying a mirror coating for polishing, which comprises peeling a film after curing a cured resin coating.

  The above-described ultraviolet mirror coating treatment may be applied to the printed paper surface for glazing, and an ultraviolet mirror coating apparatus for performing this ultraviolet mirror coating treatment is well known (for example, Patent Documents 1 to 3). The configuration of a conventional ultraviolet mirror coating apparatus will be described with reference to FIG. 2. In FIG. 2, reference numeral 21 denotes an endless film that runs around a plurality of guide rollers 22 in the direction of the arrow. Reference numeral 23 denotes a pressure roller between the guide roller 22 arranged above the traveling film 21 superimposed on the printing paper that has been sent with the UV curable resin coating coated on the printing surface. Crimp with pinching. Reference numeral 24 denotes an ultraviolet lamp. Reference numeral 25 denotes a belt conveyor, which can hold and convey printing paper by vacuum. The ultraviolet curable resin paint applied to the printing paper which is pressure-bonded to the film 21 by the pressure roller 23 and conveyed by the belt conveyor 25 is irradiated with ultraviolet rays from the ultraviolet lamp 24 through the film 21 to cure the ultraviolet curable resin paint. .

The printing paper on which the ultraviolet curable resin coating applied on the surface is cured by the irradiation of ultraviolet rays is sent by a belt conveyor 25 to a paper discharge device (not shown). In addition, before the illustrated UV mirror coating apparatus, a UV curable resin coating is applied to a paper feeding apparatus that supplies printing paper to be subjected to UV mirror coating processing, and a printing surface of the printing paper that is sent from the paper feeding apparatus. Although a coater device is arranged, the illustration is omitted.
In addition to using a smooth film 21, an embossed film may be used, and the embossed shape may be transferred to an ultraviolet curable resin paint on a printing paper surface to give a pattern. Various apparatuses for applying the ultraviolet mirror coating have been proposed as disclosed in, for example, Patent Documents 1 to 3.
JP 56-37398 A JP-A-6-166170 Japanese Examined Patent Publication No. 7-106627

  In the mirror coating apparatus, as described above, the film 21 is superposed on the printing paper coated with the ultraviolet curable resin coating so as to perform the ultraviolet mirror coating treatment, and is conveyed by the belt conveyor 25 and subjected to ultraviolet irradiation. However, in the conventional apparatus that transports the printing paper with the printing paper placed on the belt conveyor 25 as described above, the position of the printing paper on the belt conveyor 25 cannot be regulated, and the printing paper is not applied to the belt conveyor 25. Happens to be displaced. In UV mirror coating, when transferring an image onto printing paper using an embossed film, the position of the pattern is shifted from the printing paper and the transfer position of the pattern to the printing paper is misaligned. Is a major obstacle. In order to avoid such misalignment of the printing paper, one that transports the printing paper while being held on a belt conveyor by vacuum is used, but displacement may be unavoidable depending on the quality of the paper.

  After performing the UV mirror coating treatment as described above, the printing paper needs to be peeled off from the film. For this reason, printing is performed by blowing compressed air on the overlapping surface of the printing paper and film at the discharge end of the UV mirror coating device. It is practiced to peel the paper from the film. However, it is difficult to reliably peel off printing paper that has been subjected to UV mirror coating at high speed and is conveyed at high speed with air pressure, especially for thin paper with no waist. It becomes even more difficult. In this way, in the UV mirror coating apparatus in which UV paper is subjected to UV mirror coating treatment and placed on a belt conveyor for UV irradiation, the film on the printing paper coated with UV curable resin coating is applied. When transferring a pattern, the position of the printing paper is shifted and the pattern transfer position with respect to the printing paper is likely to shift, and the printed paper after curing with the UV curable resin paint is surely removed from the film superimposed on it. There was a problem that it was difficult to peel off and lacked certainty.

  In view of the fact that the conventional ultraviolet mirror coating apparatus has the above-described problems, the present invention does not cause misalignment of the printing paper while being superimposed and conveyed on the belt conveyor and the film, In addition, an object of the present invention is to provide an ultraviolet mirror coating apparatus capable of reliably peeling off the printing paper that is in close contact with the film after the ultraviolet curable resin coating is cured.

  In order to solve the above-described problems, the present invention applies an ultraviolet curable resin coating on a printing paper surface, and superimposes the film on the printing paper surface coated with the ultraviolet curable resin coating, and conveys it on a conveyance conveyor through the film. An ultraviolet mirror coating apparatus for glazing the surface of a printing paper for peeling the film after irradiating the ultraviolet curable resin coating on the surface of the printing paper with ultraviolet rays and curing the ultraviolet curable resin coating, Provided is an ultraviolet mirror coating apparatus in which a conveying conveyor has a gripping bar provided with a gripping claw for picking up and transporting the printing paper coated with the ultraviolet curable paint.

In the ultraviolet mirror coating apparatus according to the present invention, a conveyance conveyor having a gripping bar provided with a gripping claw for grasping and conveying the front end of the printing paper coated with an ultraviolet curable paint is used, and the printing paper is irradiated with ultraviolet rays. While the machine is being transported, the tip of the conveyor is gripped by the gripping claw and the UV mirror coater is transported, so the printing paper on the conveyor is firmly positioned on the conveyor and misaligned. High-speed operation is possible without causing the image to be transferred, and the pattern can be transferred to the printing paper as predetermined using a film on which the pattern has been embossed.
As the barb for use in the ultraviolet mirror coating apparatus according to the present invention and the barb provided with the barb, appropriate ones including those already known in various configurations can be adopted.

  Hereinafter, the ultraviolet mirror coating apparatus according to the present invention will be described in detail with reference to the embodiment shown in FIG. In FIG. 1, reference numeral 1 denotes a resin film, which is configured to run endlessly around a guide roller 2 and a driving roller 3 and run in the direction of an arrow. An ultraviolet irradiation device 4 includes an ultraviolet lamp 5 and a cooling device 6. Reference numeral 7 denotes a conveyer that conveys printing paper to which an ultraviolet mirror coating is applied. In this conveyor 7, two chains 10 configured to run endlessly around the sprockets 8 and 9 are arranged in parallel with each other in a direction perpendicular to the paper surface. The chain conveyor has a structure in which the bar 11 is attached to the two chains at a predetermined interval. A gripping claw 12 that holds the gripping end of the printing paper to be conveyed is attached to the gripping bar 11. The barb 12 and the bar 11 to which the barb is attached are known in various structures, and appropriate ones including them may be adopted, so that the description of the specific structure is omitted.

A pressure cylinder 13 with a gap 14 is urged against the driving roller 3 on which the film 1 is stretched, and a printing paper coated with an ultraviolet curable resin paint on its upper surface is applied to the ultraviolet curable resin paint coating surface. In a state where the film 1 is stacked, the film 1 is pressure-bonded to the driving roller 3. The pressure cylinder 13 has a structure in which the surface is covered with a blanket or a rubber sheet so as to exert a pressure-bonding function with the driving roller 3. A gap 14 of the pressure cylinder 13 is attached to a chain conveyor. The bar 11 is passed.
In addition, before the illustrated UV mirror coating apparatus, a UV curable resin coating is applied to a paper feeding apparatus that supplies printing paper to be subjected to UV mirror coating processing, and a printing surface of the printing paper that is sent from the paper feeding apparatus. Although a coater device is arranged, the illustration is omitted.

  The ultraviolet mirror coating apparatus shown in FIG. 1 has the above-described configuration, and its operation will be described below. A printing paper whose upper surface is coated with an ultraviolet curable resin paint by a coater (not shown) and is discharged from the coater is grasped at the leading end by the gripping claws 12 of the bar 11 constituting the conveyor 7. 1 is sent from the right side of 1 by the conveyor 7 with the coating layer facing up. The printing paper is sandwiched between the pressure cylinder 13 and the driving roller 3 while the film 1 is overlaid on the upper surface, and the film 1 is pressure-bonded onto the ultraviolet curable resin coating coated on the printing paper, and the printed paper 1 The ultraviolet curable resin coating is cured by being irradiated with ultraviolet rays from the ultraviolet irradiation device 4 through the film 1 and is subjected to glazing or glazing and pattern transfer to the printing surface.

While the printing paper passes through the UV mirror coater, it is picked up and transported by the gripping claws 12 to which the gripping bar 11 of the conveyor 7 is attached, so that the positional error does not occur. Even when the pattern is transferred from the film by the coating apparatus, a situation in which the transfer position of the pattern is shifted is prevented.
In the UV mirror coater shown in FIG. 1, when the film 1 and the conveyor 7 are separated from each other, the printing paper continues to move with the conveyor 7 while being held by the gripping claws 12 of the conveyor 7. The printing paper that has been in close contact with the film 1 is reliably peeled off from the film 1. After that, the gripping claw 12 of the bar 11 releases the grip on the printing paper by contact with a cam or the like, and the printing paper on which the ultraviolet mirror coat is formed is discharged from the mirror coating apparatus.

The mirror coating apparatus according to the present invention has been specifically described above based on the illustrated embodiment. However, the present invention is not limited to the structure shown in this embodiment, and various modifications may be made. Needless to say.
For example, in the above-described embodiment, the ultraviolet irradiation device 4 including the three ultraviolet lamps 5 and the cooling device 6 is shown, but it goes without saying that other ultraviolet irradiation devices may be appropriately employed. In the illustrated example, the pressurizing cylinder 13 in which a blanket or a rubber sheet is attached to the gap is employed. However, the present invention is not limited to this, and a pressurizing cylinder having an appropriate structure may be employed.

Explanatory drawing which shows the structure of the ultraviolet mirror coating device by one Example of this invention. Explanatory drawing which shows the structure of the conventional ultraviolet mirror coating device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Film 2 Guide roller 3 Drive roller 4 Ultraviolet irradiation device 5 Ultraviolet lamp 6 Cooling device 7 Conveyor (chain conveyor)
8 sprocket 9 sprocket 10 chain 11 gripping rod 12 gripping claw 13 pressure cylinder 14 gap 21 film 22 guide roller 23 pressure roller 24 ultraviolet lamp 25 belt conveyor

Claims (2)

  An ultraviolet curable resin coating is applied on the surface of the printing paper, and the film is superimposed on the surface of the printing paper coated with the ultraviolet curable resin coating and conveyed on the conveyor while passing through the film to the ultraviolet curable resin coating on the printing paper surface. An ultraviolet mirror coater for glazing the surface of the printing paper on which the film is peeled after irradiating ultraviolet rays to cure the ultraviolet curable resin paint, and the conveyor is coated with the ultraviolet curable paint. An ultraviolet mirror coater comprising a gripper having a gripper for picking up and transporting printed paper.   2. The ultraviolet mirror coating apparatus according to claim 1, further comprising a pressure cylinder with a gap for pressing the superposed printing paper and the film.

Images