JP4033469B2 - Surface processing equipment that forms film-forming surface on continuous printing paper surface - Google Patents

Description

The present invention relates to machining apparatus for a printing paper for molding the film-shaped surface on the printing paper of the continuous expression.

As these conventional surface processing methods and apparatuses, there is a “glazing apparatus for sheet-fed printing paper” disclosed in Japanese Patent Publication No. 7-106627, for example. This conventional apparatus relates to a glossing device for a sheet-fed printing paper surface that polishes the printing surface of a sheet or the like, and its main configuration is to send a plurality of ultraviolet transmissive resin films from an unwinding roller. Film transport mechanism for winding onto a take-up roll via a guide roll, a backup roll, a pressure roll, a cooling roll, a paper peeling roll, and a sheet made of paper, metal material or synthetic resin material on the pressure roll Each sheet and a sheet feeding mechanism provided with a registration device for positioning in the flow direction and lateral direction of the sheet, and an ultraviolet curable resin paint on a roll of the resin film being conveyed Resin paint coating mechanism that coats smaller than the surface of the sheet with the attached plate, and the entire circumference of the sheet fed by the sheet feeding mechanism one by one to the coating surface of the resin film being transported The edge of Then, the pressure roll and the receiving roll are bonded to the resin film in an almost oxygen-free state, and the ultraviolet curable resin paint on the coated surface is irradiated with ultraviolet rays through the resin film and cured to form a resin on a sheet of paper. Resin paint curing mechanism that forms a film, and blower air is blown onto the entire peripheral edge of the resin film adhering to the sheet on the paper peeling roll, and the sheet is peeled off from the resin film and discharged. And a sheet-fed paper discharge mechanism, which is characterized by comprising:
Japanese Examined Patent Publication No. 7-106627

  Specifically, as shown in FIGS. 2 (a) and 2 (b), the film transport mechanism (A) is provided with a transparent, ultraviolet-transmissive resin film 21 having flexibility, and the resin film 21 is wound. A guide roll 7, a backup roll 8, a pressure roll 6, a cooling roll 18, and a paper peeling roll 17 are disposed between the unwinding roll 14 and the winding roll 15, and the resin is passed through these rolls. It is comprised so that a film may be conveyed. The pressure roll 6 is a mirror roll and is in contact with the rubber receiving roll 5, and the two cooling rolls 18 are in contact with each other, and a resin film is pressed between the contacted rolls. It is comprised so that it may be conveyed. That is, the unwinding roll 14 is stretched around the pressure roll 6 via the guide rolls 7, and is further rewound while being pulled by the winding roll 15 via the cooling roll 18 and the paper peeling roll 17. Has been. In addition, the resin paint application mechanism (B) arranges the backup roll 8 between the guide rolls 7 and 7 and makes the roll 9 with the plate attached to the backup roll 8 come into contact with the rolls 9 and the doctor roll 11. While the roll 10 is brought into contact, an ultraviolet curable resin paint (not shown) is applied to a contact portion between the application roll 10 and the doctor roll 11 via the application supply pipe 12. That is, the ultraviolet curable resin that is well kneaded with the rotation of the two rolls 11 and 12 by supplying the ultraviolet curable resin paint between the doctor roll 11 and the coating roll 10 through the paint supply pipe 12. The coating material can be applied to the entire surface of the plate attached to the roll 9 or to a desired portion surface smaller than the sheet size of the sheet 2. Further, since the backup roll 8 is arranged so as to be freely movable to the left and right, positioning with respect to the roll 9 is easy and easy. Reference numeral 13 denotes a liquid receiving tank for the ultraviolet curable resin paint applied by the paint supply pipe 12. Further, the sheet feeding mechanism (C) sets the sheet 2 to be coated and feeds the sheets one by one through the supply conveyor 3 and the sheet to the tip of the supply conveyor 3. The registration device 4 is configured to position the paper 2 in the flow direction and the lateral direction. The registration device 4 uses a device that has been widely used in a sheet-fed printing machine, and the sheet 2 that has been supplied via the resin film 21 fed from the unwinding roll 14 and the supply conveyor 3. It was added to ensure complete and reliable bonding. In addition, the resin paint curing mechanism (D) includes the resin film 21 and the sheet 2 sandwiched between the pressure roll 6 and the receiving roll 5 by the ultraviolet curable resin paint and pressed and bonded together. During this period, the resin film 21 to which the sheet 2 is stuck is conveyed after oxygen is released to make it substantially oxygen-free. During this conveyance, the ultraviolet curable resin paint on the coated surface is irradiated with ultraviolet rays by the ultraviolet illumination lamp 20 on the resin film 21 side, and is further conveyed by pressure between the cooling rolls 18 and 18 via the belt 19. Cure the paint. In addition, a cured ultraviolet curable resin coating is formed on the surface of the resin film 21 to which the ultraviolet curable resin coating is applied by the irradiation of the ultraviolet rays, and further, the sheet depends on the degree of wetness between the resin film 21 and the sheet 2. A resin film is formed on the leaf paper 2 side. Further, the sheet discharge mechanism (E) removes the sheet 2 with the resin film 21 conveyed through the cooling rolls 18 and 18 between the sheet 2 and the resin film 21 on the sheet peeling roll 17. Air from the blower 16 is blown onto the non-adhered portion, and the sheet 24 having the resin film formed thereon is peeled off from the resin film 21 and then discharged to the sheet discharge machine 23 via the conveyor 22 to make one sheet. It is configured to be loaded one by one.

  Such a conventional method is a method of glazing exclusively on the surface of a sheet-fed printing paper, and this method has been considered unsuitable for the surface processing method in continuous paper printing as in the present invention. Therefore, conventional continuous printing is not performed at all, and a method such as UV coating or film laminating has been adopted. However, these UV processing and laminating methods can only polish and cannot perform surface processing by the method of the present invention.

The present invention has been developed to solve the above-mentioned problems, and is composed of a mirror-like hard chrome-plated heat roll and a heat-resistant pressure-resistant rubber roll, and is a surface that smoothes printing surface powder, ink, paper unevenness, etc. A smoothing roll, a coating device in which the coating roll is composed of an application width adjusting roll in the width direction by a flexographic plate or a side doctor, and a cooling bonding drum that absorbs the cooling of printing paper heated by the hot roll and the heat of ultraviolet rays. In a surface processing apparatus for forming a film-shaped surface on a continuous printing paper surface comprising an ultraviolet device , the continuous printing paper passes through a tension detector via several guide rolls and is conveyed to a surface smooth heat roll and is printed on the surface. After the surface becomes smooth, UV paint is applied to the surface of the printing paper with a coating roll whose coating width is narrower than the film width by the side doctor. Coated, further UV paint is applied and stuck to the film by irradiating ultraviolet rays after the continuous paper printing, characterized by molding the shape of the film surface to the printing surface by peeling the film after curing of the coating material The object is to provide a surface processing apparatus for forming a film-shaped surface on a continuous printing paper surface.

The present invention consists of a heat roll and a heat-resistant pressure-resistant rubber roll with a mirror surface hard chrome plating, and a surface smooth roll for smoothing printing surface powder, ink standing, paper unevenness, etc., and a coating roll is a width direction by a flexographic plate or a side doctor A film-shaped surface is formed on the continuous printing paper surface consisting of a coating device composed of a coating width adjustment roll, a cooling paper drum heated by a heat roll, a cooling bonding drum that absorbs ultraviolet heat, and an ultraviolet device. In continuous surface processing equipment , continuous printing paper passes through a tension detector via several guide rolls and is transported to a surface smooth heat roll and the printing surface becomes smooth, and then it is coated from the film width by a side doctor. width UV paint is applied to the printing paper surface with a coating roll is narrowed, the UV coating is applied after addition of the continuous paper printing A surface processing apparatus for forming a film-shaped surface on a continuous printing paper surface, characterized in that a film is bonded to the surface and irradiated with ultraviolet rays, and the film is peeled off after the coating is cured to form the shape of the film surface on the printing surface Therefore, it has many effects as follows.
A. Conventional UV processing can only be polished, but according to the present invention, various surface processing can be obtained by changing the film using the same paint to transfer the surface shape of the film. In addition, even with the glazing process, a smooth glazing process that is impossible with the conventional UV process can be performed.
In the present invention, since ultraviolet rays are irradiated through a film, there is almost no decrease in the irradiation efficiency due to oxygen, and the efficiency is increased by 3 to 4 times compared to conventional ultraviolet irradiation in air. The number is only 1/3. Therefore, the apparatus cost and the power cost are reduced.
C. Conventional UV processing cannot be cured completely in the air because it is cured in the air, so that the surface remains slim. However, in the case of curing via the film according to the present invention, Since it hardens completely, there is no slime. Therefore, the smell of UV paint hardly remains compared with the conventional processing.
In addition, according to the present invention, the coating amount can be halved as compared with the conventional UV processing by completely curing and smoothing with a film. As a result, it can be said that it is easy to deink and is suitable for recycling.
Furthermore, the surface condition of the processing by the apparatus of the present invention is almost the same as that of the film, and the surface friction resistance is stronger than that of a generally used film. Since the film can be reused, the film cost will be 1/100 or less (when using OPP).

An embodiment of the present invention includes a surface smooth roll that is composed of a heat roll and a heat-resistant pressure-resistant rubber roll with a mirror surface hard chrome plating process and smoothes printing surface powder, ink stand, paper unevenness, and the like, and a coating roll is a flexographic plate or a side doctor. The film shape on the continuous printing paper surface consisting of a coating device composed of a coating width adjustment roll in the width direction, a cooling bonding drum that absorbs the heat of ultraviolet rays and the cooling of printing paper heated by a heat roll, and an ultraviolet device In a surface processing apparatus that molds the surface , the continuous printing paper passes through the tension detector via several guide rolls and is conveyed to the surface smooth heat roll, and after the printing surface becomes smooth, the film is made by a side doctor. coating width than UV coating is applied to the printing paper surface with a coating roll is narrowed, UV coating further after the continuous paper printing The film-shaped surface is formed on a continuous printing paper surface, characterized in that the film surface is applied by applying UV light, irradiating with ultraviolet rays, and removing the film after the coating is cured to form the film surface shape on the printing surface. Since it is a surface processing apparatus, various surface processing can be obtained simply by changing the film using the same paint to transfer the surface shape of the film.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 forms a film-shaped surface on the continuous printing paper surface of the present invention. The surface processing apparatus is shown. In the figure, 31 is a printing paper immediately after printing, 32 is a printing paper that has been polished, 33 is a film unwinding device, 34 is a film, 35 is a tension detector, 36 is a surface smooth heat roll, and 37 is a heat and pressure resistant rubber roll. , 38 is a coating roll, 39 is a side doctor, 40 is a cooling drum, 41 is a pressure rubber roll for bonding, 42 is an ultraviolet lamp, 43 is a cooling roll, 44 is a tension detector, 45 is a film, 46 is a winding device, 47 is a drawing roll.

  Therefore, the surface smooth roll, the coating device, the cooling and bonding drum, and the ultraviolet light device, which are the main components of the present invention, will be described. First, the surface smooth roll is composed of a heat roll and a heat-resistant pressure-resistant rubber roll with a mirror surface hard chrome plating. It is necessary to smooth the powder on the printing surface, the ink standing, and the unevenness of the paper. In general, the UV paint has a large surface tension, and is easily affected by unevenness of the printed surface or the printed surface, so that a crater is easily formed. As a result, the coating amount can be reduced and the finish can be improved. Further, the temperature of the hot roll is approximately 70 degrees and the pressure is 10 ton / m as a guide. Next, although it is a coating apparatus, the coating roll uses the application width adjustment roll of the width direction by a flexographic plate or a side doctor. The coating width is preferably narrower than the film surface, and it is preferable that the coated surface has as little air as possible after lamination. Furthermore, although it is a cooling bonding drum and an ultraviolet ray measure, the purpose of cooling the drum is to cool the printing paper heated by a heat roll and to absorb the heat of ultraviolet rays. By irradiating ultraviolet rays simultaneously with the bonding of the film on the cooling drum, it becomes difficult for air to enter the gaps between the films. Further, a stable finish can be obtained by winding the film and printing paper around a drum. Further, a specific configuration of the apparatus of the present invention will be described. A continuous printing paper 31 printed on a continuous paper by a printing method such as offset, gravure, flexo, etc. passes through a tension detector 35 through several guide rolls and is surfaced. It is sent to the smooth heat roll 36. Then, after the printing surface becomes smooth, UV paint is applied to the surface of the printing paper by the coating roll 38 whose coating width is narrower than the film width by the side doctor 39. At that time, the printing paper 31 is pasted by the film 34 sent from the unwinding device 33, the cooling drum 40, and the pressure rubber roll 41 for bonding. Then, the UV paint on the printing surface is cured by being irradiated with ultraviolet rays through the film 34 while being wound around the cooling drum. Further, the film 45 after the UV paint is cured is peeled off from the printing paper, cooled by the cooling roll 43, and then wound by the winding device 46 through the tension detector 44. Further, after the film is peeled off, the printing paper 32 is supported by the guide roll through the drawing roll 47 and is carried to the next process. At this time, the shape of the film surface is transferred to the surface of the printing paper 1. Also, if the film is transparent, it will be polished, and if it is matte, it will be matte. Moreover, if it is embossed, embossing can be performed, and if hologram film is used, hologram processing can be performed.

  Since the basic operation of the apparatus of the present invention is the same as that of a conventional sheet-fed printing paper surface glossing apparatus, it has been described in detail in the section of the related art in the related art and will not be described here.

The mechanism schematic diagram of the surface processing apparatus which shape | molds the film-shaped surface of the continuous printing paper surface of this invention. FIG. 6 is a schematic diagram of the mechanism of a conventional glossing device for sheet-fed printing paper.

Explanation of symbols

1 Printing paper (direct printing) 2 Printing paper (after glazing)
DESCRIPTION OF SYMBOLS 3 Film unwinding device 4, 15 Film 5, 14 Tension detector 6 Surface smooth heat roll 7 Heat-resistant pressure-resistant rubber roll 8 Coating roll 9 Side doctor 10 Cooling drum 11 Pressure rubber roll for pasting 12 Ultraviolet lamp 13 Cooling roll 16 Winding device 17 Drawer roll

Claims (1)

Consisting of a heat roll with a mirror surface hard chrome plating and a heat-resistant pressure-resistant rubber roll, the surface smoothing roll that smoothes the printing surface powder, ink stand, paper unevenness, etc., and the coating roll is adjusted in the width direction by flexo plate or side doctor A surface processing device for forming a film-shaped surface on a continuous printing paper surface composed of a coating device composed of a roll, a cooling and bonding drum that absorbs the heat of ultraviolet rays and the cooling of printing paper heated by a heat roll. in, after transported and printed surface through the tension detector via several guide rolls continuous printing paper surface smoothness hot roll becomes smooth, painted width than the film width at the side doctor narrows UV paint on the printing paper surface with a coating roll is applied, by applying a UV coating further after the continuous paper printing and fill the The bonded combined by irradiating ultraviolet radiation, surface machining apparatus for molding a continuous printing paper on the film-shaped surface, characterized by molding the shape of the film surface to the printing surface by peeling the film after curing of the coating material.

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