JP2016221939A - Laminating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminating apparatus which has remarkably high work efficiency by using a conventional inexpensive film sheet for a print laminate to remove the protrusion, coating failure, etc. of the film sheet.SOLUTION: A laminating apparatus includes: a drawing step of drawing, one by one, single sheets printed with at least a mark read by a sensor of a cutting device; a coating step of coating a film sheet on at least one surface of the drawn single sheets continuously without stopping; a retention step of slacking the single sheet continuously coated with the film sheet to retain the single sheet; a cutting step of pulling out and temporarily stopping the retained single sheet to cut the single sheet with a cutting device comprising a cutting blade and a fixed blade and linked to the sensor; and a loading step of sequentially loading the cut single sheets on a stocker.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a laminating apparatus for coating a surface of a printed material or the like with a glossy or matte film sheet to improve appearance or improve durability.

  A conventional laminator is disclosed in, for example, Japanese Patent Application Laid-Open No. 2007-320304. In this case, the front and back end portions of the sequentially fed sheet are overlapped, and the laminate film is continuously coated in that state, and then a cut is made in the end portion of the laminate film of the overlap portion, and the tension is applied to the cut portion. The individual laminated paper is manufactured by tearing the laminated film by applying.

JP 2007-320304 A

  In the above-mentioned patent document invention, the property of easily tearing a coated film sheet such as biaxially stretched polypropylene usually used in the print laminating industry is used for cutting the coated film sheet. That is, if the film sheet is scratched at the end of the cutter and applied with tension, the film sheet is cracked in a direction perpendicular to the direction in which the tension is applied, and is broken.

  However, the breaking means only uses the characteristics of the film to be used, and frequently occurs when it does not work as expected. For example, the tearing and breaking film sheet has an irregular break shape and direction, and part of the film sheet breaks out from the end of the sheet. The protruding film sheet becomes an obstacle to aligning products, and adversely affects operations such as the subsequent cutting process. In severe cases, accurate cutting is impossible and it is necessary to start again.

  Contrary to the above example, the film sheet tears and breaks at an unintended portion, and a defective coating phenomenon occurs in which a printed portion (plate surface) requiring coating inside the sheet is not covered. Such trouble remarkably impairs work efficiency and has a large economic loss.

  Further, the breaking means for scratching the film sheet end portion of the sheet with which the front and rear ends overlap with each other at the tip of the cutter may damage both of the film sheets coated on both surfaces in a laminator that covers both surfaces simultaneously. It cannot be used because it is impossible in principle.

  The present invention uses a conventional inexpensive film sheet for print laminating and eliminates the protrusion of the film sheet, coating defects, etc., so that the working efficiency is extremely high and the end portions of the sheet sheets are complicated. It is an object of the present invention to provide a laminating apparatus that can be applied to a laminator that does not require a mechanism and that simultaneously coats film sheets on both sides.

  In order to solve the above-described problems, the laminating apparatus of the present invention is provided with a feeding step of feeding one sheet at a time at least one mark read by a sensor of the cutting apparatus, and at least one of the fed sheet. A coating step for continuously coating the film sheet on the surface without stopping, a holding step for loosening and holding the single-wafer sheet continuously covered with the film sheet, and drawing the stopped single-wafer sheet When the sensor reads the cutting process, the flow of the sheet is temporarily stopped, and the cutting process of cutting with a cutting device composed of a cutting blade and a fixed blade interlocked with the sensor, the stacking process of sequentially loading the cut sheet into the stocker, and It is characterized by consisting of.

  The at least one pair of heat rollers used in the coating apparatus of the present invention may be a combination of, for example, a metal heat roller and the other a backup rubber roller, or both of them are heated inside a rubber roller such as silicon rubber. It may be composed of a heat roller incorporating the. Two or more pairs of the heat rollers may be arranged.

  The single sheet passing through the coating apparatus passes while keeping a certain distance or controlling the front and back by controlling the feeding device. For this reason, there is no need for a mechanism for superimposing complicated sheet edges. In addition, since the flow of the sheet passing through the coating device does not stop, no spots are generated in the finished coating.

  The sheet sheet continuously covered with the film sheet is in a state where a certain amount is loosened by the holding device. The slack may be left as it is depending on the weight of the sheet, but for example, a dancer roller or the like may be used to apply an appropriate tension to the front and back processes.

  In the cutting device, a sensor for reading a mark written on the surface of the sheet is disposed on the upstream side of the pair of nip rollers, and a so-called guillotine cutting device including a cutting blade and a fixed blade is disposed on the downstream side. When a mark on the sheet passing through the sensor is read, a cutting action is started at a predetermined position, and the sheet and the covering film sheet are cut together.

  The conventional laminator was intended to cover the single sheet one by one. However, the laminating apparatus of the present invention cuts the mark on the single sheet at the position where the mark is scheduled to be read. By describing the mark and the printing plate, it becomes possible to produce a plurality of individually printed products in which a film sheet is coated from a single sheet.

According to the laminating apparatus of the present invention, it is only necessary to feed out the single sheet at equal intervals or butting, so that a complicated apparatus for overlapping the front and rear ends of the single sheet, such as a conventional laminator, is not required.
In addition, since the sheet and the coated film sheet are cut together at the same time, there is no accident such as coating failure such as the protrusion of the film sheet or the plate surface not being coated.
In addition to simply covering a single sheet with a film sheet, a laminating device can be used to cut a plurality of printed materials on a single sheet and cut them into pieces or make cuts. This saves time and effort in subsequent downstream processing steps.
Furthermore, with a conventional laminator, the film sheet can be cut only in the case of single-sided coating. However, if the laminating apparatus of the present invention is used, it can be accurately cut without causing any trouble even when both sides are simultaneously coated. can do.

It is a surface view of the sheet | seat sheet S1 used for the Example of this invention. It is a principal part schematic diagram which shows the process of the lamination apparatus of this invention. It is a top view which shows the state of the sheet | seat sheet | seat S1 drawn | fed out from a feeding apparatus at equal intervals. It is a top view which shows a mode that the film sheet F is continuously coat | covered with a coating | coated apparatus. It is a top view of the sheet | seat sheet S1 for demonstrating the operation | movement which cuts the sheet | seat sheet S1 of a continuous state with the cutting apparatus to the single-piece laminate sheet RS1. It is a surface view of single laminated sheet RS1. (A) is a surface view of a single sheet S2 on which a plurality of plates are printed, and (B) is a surface view of a single laminate sheet RS2 cut out from the sheet S2. (A) is a surface view of the laminate sheet RS1 ′ in a state in which makeup cutting in the vertical direction of the plate surface 1 is completed, and (B) is a surface view of the laminate sheet RS2 ′ in a state in which makeup cutting in the vertical direction of the plate surface 2 is completed. is there. 2 is a partially enlarged cross-sectional view of a film sheet F. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a surface view of a sheet S1 used in this embodiment. For example, a printing plate 1 such as a poster or a flyer indicated by a diagonal line in a square frame is printed in a cutting mark (register mark) at the four corners. A sensor reading mark M, which will be described later, is written in the upper right part. The sheet S1 is coated with a cut-off mark (register mark) at the four corners after the film sheet F is coated, and finally completed as a poster or flyer having a square frame size.

  The sheet S1 configured as described above is stacked on the leftmost paper platform 11 at the most upstream stage of the laminating apparatus shown in FIG. Then, for example, by a sheet feeding device such as a suction pad 12 (which may be a feed roller or the like), a pair of sheets are sequentially fed from the uppermost sheet S1 one by one to the right transport table at equal intervals and arranged on the right side. The nip rollers 13a and 13b are sequentially fed in a state shown in FIG. 3 to a coating apparatus including a pair of heat rollers 14a and 14b arranged on the right side.

  In the coating apparatus, the film sheet F is fed out from a roll waiting upward, and aligned with the planned coating surface on the surface of the sheet S1 that passes by the pair of heat rollers 14a and 14b. As shown in FIG. 9, the film sheet F has a known heat-sensitive adhesive layer 31 formed on one surface of a base material 30 made of, for example, biaxially oriented polypropylene, and the heating and heating of the heat rollers 14a and 14b. As shown in FIG. 4, the heat-sensitive adhesive layer 31 exhibiting adhesiveness by the pressure treatment firmly bonds them together. Then, the sheet S1 is made continuous by the film sheet F and fed from the support roller 15 on the right side to a stopping device having a dancer roller 16 disposed on the right side.

  As shown in FIG. 4, since the space between the front and back sheet sheets S1 is wide, the heat-sensitive adhesive layer 31 of the film sheet F is exposed in this gap, but the surfaces of the heat rollers 14a and 14b are exposed. If the film is subjected to fluorine processing, the heat rollers 14a and 14b are not bonded and wound.

  In the stopping device, for example, the continuous sheet S1 is loosened between the support rollers 15 and 19 (both of which may be a pair of nip rollers) to adjust the amount of delivery to the downstream process. Although it is possible to leave it to its own weight as it is, it is preferable that tension is positively applied to the front and rear processes by the dancer roller 16 or the like. In addition, although the sheet S1 is continuously coated and sent out from the coating device upstream of the stopping device, the downstream cutting device temporarily stops at the time of the cutting operation, so that there is a difference in the conveyance speed. . The difference is adjusted by the dancer roll 16 of the stopping device moving up and down.

  For example, if the speed of the sheet S1 sent out from the coating apparatus is set slower than the speed of the cutting apparatus, the dancer roller 16 rises. When the height of the sheet S1 rises to a certain level, the sensor 18 reads the lack of looseness of the sheet S1, slows down or stops the cutting device, and the sheet S1 fed from the coating device descends to the height of the sensor 17. Wait until enough slack is secured. That is, the dancer roller 16 moves up and down between the heights of the sensors 17 and 18 to adjust the amount of slack. In this way, since the coating apparatus is always operating at a constant speed, the finished state when the film sheet is coated is free from spots. The cutting device is not affected even if it is stopped. And the sheet S1 which passed through the stop apparatus is sent to the cutting apparatus arrange | positioned on the right side.

  The cutting device includes a sensor 20, a pair of nip rollers 21a and 21b, a cutting blade 22a, and a fixed blade 22b. When the sensor 20 reads the mark M of the passing sheet S1 as shown in FIG. 5, the distance is counted and the flow is temporarily stopped at the first cutting position L1 indicated by a two-dot chain line, and the cutting position L1 is set. Cut. The counting of the distance is further continued, and then the cutting is performed by once stopping the flow at the cutting position L2 indicated by a two-dot chain line in the same manner as described above. Then, the cutting operation is continued for the subsequent sheet S1, and each sheet S1 is finished into a single laminate sheet RS1 shown in FIG.

  The laminated sheet RS1 finished in this way is discharged to the right stocker 24 by, for example, a pair of nip rollers 23a and 23b and sequentially stacked. If the present laminating apparatus is used as described above, the film sheet F does not protrude from the top and bottom of the sheet S1 or is not covered, and the cutting operation is performed once stopped. Since the position of the printing plate is accurately aligned, there will be no trouble in various subsequent processing steps.

The present invention is not limited to the above embodiment.
For example, as shown in FIG. 7A, when two plate surfaces 2 are printed on a single sheet S2, if the cutting mark M for each plate surface 2 is described, two plates 2 in the figure are displayed. By cutting at L1 to L4 indicated by dotted lines, as shown in FIG. 7B, a laminate sheet RS2 having the same size and the same position of the plate surface 2 can be cut out from one sheet S2.

  Further, if the cutting lines L1 to L4 are set at the same positions as the cutting marks (register marks) on the top and bottom of the printing plates 1 and 2, as shown in FIGS. 8A and 8B, Since the top and bottom make-up trimming has been completed, the subsequent trimming is completed only in the vertical direction. Therefore, the labor of cutting can be saved and it is convenient.

  Further, in this embodiment, the film sheet F is coated on one side of the sheet S1, but even when both sides are coated, it is possible to carry out the same process. In that case, as shown by a broken line in FIG. 2, if the film sheet F is fed out from the roll waiting downward and aligned with the planned coating surface of the back surface of the sheet S1 passing through the pair of heat rollers 14a and 14b, Good. As described above, even in the case of simultaneous double-sided lamination which is impossible with the conventional laminator breaking means, it is possible to cut the film sheet accurately without causing any protrusion or unsticking.

S1, S2 Sheet-fed sheets RS1, RS2 RS1 ′, RS2 ′ Laminate sheet F Film sheet M Marks L1, L2, L3, L4 Planned cutting lines 1, 2 Plate surface 11 Paper mount 12 Adsorption pads 13a, 13b, 21a, 21b, 23a, 23b Nip rollers 14a, 14b Heat rollers 15, 19 Support rollers 16, Dancer rollers 17, 18, 20 Sensor 22a Cutting blade 22b Fixed blade 24 Stocker 30 Base material 31 Heat sensitive adhesive layer

Claims (1)

  At least a sheet feeding process in which one or more marks read by a sensor of the cutting device are written one by one, and at least one surface of the fed sheet is coated without stopping the film sheet continuously Covering process, stopping process of loosening and holding a sheet sheet continuously covered with a film sheet, drawing out the stopped sheet sheet and stopping the flow of the sheet when the sensor reads the mark And a laminating apparatus comprising a cutting step of cutting with a cutting device including a cutting blade and a fixed blade interlocked with the sensor, and a stacking step of sequentially stacking the cut sheet sheets on a stocker.

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