JP2008168598A - Device for preventing generation of wrinkles in laminate film in laminating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for preventing generation of wrinkles of a laminate film upon inserting a medium. <P>SOLUTION: In a laminate device for forming a laminated material by pasting a laminate film A to a surface of a printed material or a medium M by pressing with transporting roller 1 and a pressing roller 2, a guide material 8 composed of a rod like roller or a crown shaped roller which is curved in an arch shape from the central position to the right and left directions symmetrically is arranged in an inlet side of a pressing roller 2 for a laminate film A supplied to the pressing roller 2 at a lower position than a line connecting a point where the wound laminate film A is loosen from the part of winding the laminate film 5, to a point on an outer peripheral circle of the pressing roller 2 to which outer surface the laminate film contacts. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, a transparent or translucent laminate film coated with an adhesive material on one side is attached to the surface of a printed matter such as a poster or an advertisement or an output medium of a computer (hereinafter referred to as a medium). In the laminating apparatus used for laminating a laminate that improves the water resistance and weather resistance of the media by protecting it, the wrinkle generation preventing apparatus for laminating film in the laminating apparatus that prevents the laminating film from wrinkling About.

  Laminate film is made by applying an adhesive material to one side of a transparent or translucent film such as polyester or vinyl chloride, and a long laminate with a release paper attached to the surface of this adhesive side. Paper tube).

  As shown in FIG. 8, a conventional laminating apparatus for covering such a laminating film in close contact with the surface of the media has side plates 10 fixed in parallel on the left and right sides of the underframe. Separated from the laminate film A, the shaft 1a of the transport roller 1, the shaft 5a that supports the core of the laminate film A, the shaft 3a that supports the core of the raw film 3 of the transport film C, A shaft 6a that supports a winding core for winding the release paper B that has been wound, and a shaft of an idle roller 9a are suspended. Further, a table 4 a for feeding the medium M, a discharge table 4 b, and an idle roller 7 shaft are installed between the side plates 10.

  The conveyance roller 1 supported between the left and right side plates 10 is driven by a motor 11, and a pressure roller 2 is provided so as to make a pair with the conveyance roller 1 in the vertical direction. The outer peripheral portions of the transport roller 1 and the pressure roller 2 are generally made by applying rubber lining to the outer periphery of a metal core.

  The operator places the medium M on the transport film C fed to the table 4a, steps on the foot switch, rotates the motor 11, and winds the transport roller 1 and the release paper B. The shaft 6a is rotated. Due to the rotation of the transport roller 1, the medium M is drawn between the transport roller 1 and the pressure roller 2 together with the transport film C. At this time, the medium M is supplied along the surface of the pressure roller 2, and the adhesive surface is The exposed laminate film A is affixed to the surface of the medium M and is discharged onto the rear inclined table 4b. The release paper B that has been peeled off is wound around the core 6 supported by the shaft 6a. (See Patent Document 1)

  In the conventional laminating apparatus shown in FIG. 8, the original film 5 of the laminated film A is set through the shaft 5a, and the laminated film A unwound from the original film 5 passes under the idle roller 9a. The sheet is inserted between the pressure roller 2 and the conveying roller 1 and discharged to the rear of the laminating apparatus, but when passing under the idle roller 9a, the release paper B is peeled off from the laminating film A and above the laminating apparatus. It is wound up on a paper tube set on a shaft 6a provided on the front side. The laminate film A is discharged to the rear of the laminating apparatus with the adhesive surface facing outward so that the surface of the laminate film A wraps around the outer periphery of the pressure roller 2.

  The raw material of the laminate film A includes those with the surface wound in an outer winding and those with the surface wound in an inner winding, and the winding direction of the release paper B is also from the back of the laminating apparatus. There are a method of winding to the back and a method of winding from the front to the back.

  The two-dot chain line in FIG. 9 shows the film path in the case of the method of setting the original film of the laminate film A whose surface is wound inwardly and winding the release paper B from the front to the rear.

In front of the lower side of the laminating apparatus, an original film 3 of a conveying film C for conveying a medium M to be laminated is set, and the conveying film C drawn out from the original film 3 is a table 4a. To the rear of the laminating apparatus together with the laminating film A. The transport film C is not coated with an adhesive.

  Usually, the width of the transport film C is the widest, the width of the laminate film A is next wide, and the width of the medium M is the narrowest. Therefore, the medium M is the laminate film A and the transport film C. Then, the laminated film is processed in a sandwiched state and discharged to the rear of the laminating apparatus. After being discharged, the transport film C is peeled off from the medium M, and the unnecessary portions of the laminated film A and the medium M are removed. Cut with a cutter knife.

  In general, the shaft 1a of the conveying roller 1 is driven by a motor 11, and the pressure roller 2 rotates in conjunction with friction when the conveying film C and the medium M pass. As the pressure roller 2 rotates, the laminate film A wound around the outer peripheral surface of the pressure roller 2 is drawn out from the original fabric 5 and conveyed.

  On the other hand, the shaft 6a on which the paper tube for winding the release paper B is set is driven by a chain (not shown) from a motor 11 that drives the shaft 1a of the transport roller 1, and the release paper B is taken up. Yes. On the other hand, the shaft 5a for setting the original film of the laminate film A is not driven by a motor.

  The shaft 5a on which the laminate 5 of the laminate film A is set has a mechanism (not shown) for manually adjusting the shaft torque by a frictional force, and a paper tube for winding the release paper B is set. Similarly, the shaft 6a has a mechanism (not shown) for adjusting the shaft torque.

   This is because when the laminate film A is continuously laminated, the outer diameter of the laminate film A becomes gradually thinner and the outer diameter of the release paper B is gradually increased. In addition, the laminate film A is provided to prevent it from sagging or being too tight.

  Further, the torque of a mechanism (not shown) for adjusting the shaft torque is adjusted so as to pull strongly when using the laminate film A to which the release paper B is stuck with a strong adhesive force. The balance between the mechanism for adjusting the shaft torque of the shaft 5a for setting the original fabric 5 and the shaft 6a for setting the paper tube for winding the release paper B is adjusted.

  Further, when using a thin laminate film A having a thin waist, the laminate film A is adjusted to be weak and adjusted to an appropriate torque according to the characteristics of the laminate film A.

  Laminate film A generally has a width of 980 mm, 1090 mm, 1250 mm, 1350 mm, etc., and a thickness of 50 μ, 80 μ, 190 μ, or the like. As the release paper B, paper or film is used.

Media M includes widths: 610 mm, 914 mm, 1067 mm, 1270 mm, materials: matte paper, photo glossy paper, and the like, with thicknesses ranging from 0.1 mm to those with a reverse side of about 1 mm. Moreover, although the panel in which a polystyrene foam is contained has thickness 5mm-10mm, in this case, it laminates without pressurizing.
JP 2002-254515 A

  As described above, in the laminating apparatus shown in FIG. 8, the laminate film A is peeled off from the laminate film A after passing through the idle roller 9a and before coming into contact with the conveying roller 2 until the release paper B is peeled off. The released release paper B is taken up by the winding core 6 supported by the support shaft 6a. At this time, the position where the release paper B is separated from the laminate film A changes from the T1 position shown in FIG. 10 (the tangent position of the release paper B (laminate film A)) along the running line of the laminate film A. (S position) or, alternatively, it changes from the T2 position (tangential position of the laminate film A) shown in FIG. 11 along the travel line of the release paper B (T3 position). This change is caused by the magnitude of the tension resistance (tension) applied to the laminate film A via the shaft 5a and the magnitude of the resistance value when the laminate film A and the release paper B are separated.

  In addition, the types of materials for laminate film A and ink for ink jet printers are increasing, and the adhesive surface of laminate film A is completely adhered to the surface of media M when pressed with light pressure. It may be difficult. In particular, when the surface of the vinyl-based medium M is printed with solvent-based ink, the adhesive surface of the laminate film A is difficult to adhere.

  The state of “difficult to adhere” is not so much as “laminate film A is peeled off from media M”, but there are a large number of media between the surface of media M and laminate film A, although they are adhered. A state where small bubbles (diameter of about 0.1 mm) are formed. This is due to the roughness of the surface of the medium M.

  Recently, the purpose of applying the laminate film A to the surface of the printed medium M is not only to protect the surface, but also by applying the laminate film A to the surface of the medium M, the same black color becomes blacker and the same blue color. However, it is more blue, the same red color is also reddish, and even the posters with the same pattern appear more clearly and beautifully. In this case, it is strong so that there are no air bubbles between the surface of the media M and the laminate film A. There has been a demand for the ability to press the laminating film A against the surface of the medium M and apply it to the medium M with pressure.

  When the laminating film A is pasted on the surface of a relatively long medium M by increasing the pressure applied by the pressure roller 2, if the width of the medium M is slightly narrower than the width of the laminating film A, Even if it is laminated about 5m continuously, it can be laminated without difficulty.

  However, as shown in FIG. 12A, when the width of the medium M is considerably narrower than the width of the laminate film A, the medium M is inserted into the laminate film A from which the release paper B has been peeled off. Small wrinkles occur at the left and right ends. The laminated film A shown in FIG. 12A shows a state in which about 50 cm of lamination has been performed after the medium M has started to be inserted. At this time, the wrinkles are small (the peaks and valleys are shallow), and no wrinkles are generated in the laminate film A wound around the surface of the medium M. On the surface of the medium M discharged to the substrate, the laminate film A is uniformly wrinkled without wrinkles.

  However, this wrinkle becomes large when laminating continuously, and the peaks and valleys become deeper. As shown in FIG. 12 (b), the laminate film A wound around the surface of the medium M is wound. Wrinkles will occur. However, the wrinkles of the laminate film A wound around the surface of the medium M are small and the mountains and valleys are shallow.

  Such wrinkles can be corrected when they are pressed by the pressure roller 2 and the conveying roller 1, so that the laminating film is applied to the surface of the medium M which is laminated and discharged to the back of the laminating apparatus. A has no wrinkles and is applied uniformly and cleanly.

  However, if the laminating process is continued further, as shown in FIG. 12 (c), the wrinkles of the laminate film A wound around the surface of the medium M are large, and the peaks and valleys become deeper. Even if pressure is applied by the pressure roller 2 and the conveying roller 1, the wrinkles cannot be corrected, and the laminating film A is wrinkled on the surface of the medium M which has been laminated and discharged to the back of the laminating apparatus. It is pasted in.

  On the other hand, even after the laminating process of the medium M is finished, if the laminating apparatus is continuously operated and the laminating film A and the conveying film C are bonded together without inserting the medium M, the wrinkles are gradually reduced. Keep going for a few meters and the wrinkles will disappear. The wrinkles are generated and accumulated while the medium M is being inserted and gradually increase. However, the wrinkles disappear gradually as the laminating film A and the conveying film C are bonded together. If the media M is not a continuous long one but cut into A0 size or A1 size, after inserting the first sheet, insert the second sheet with an interval of about 50 cm. If the laminating process is continued while leaving a gap of about 50 cm, it can be processed without wrinkles, but it is not desirable because the laminating film A is wasted.

  As shown in FIG. 12A, the pressure contact surface to which a strong pressure is applied between the pressure roller 2 and the conveying roller 1 has a certain thickness (about 0.2 mm to 1.0 mm). ) When the medium M is inserted and transported by the frictional force of the surface rubber of the transport roller 1, the portion where the media M at the center of the pressure roller 2 and the transport roller 1 is inserted, and the medium M are inserted There is a difference in frictional force between the pressure roller 2 and the left and right end portions of the conveying roller 1 that are not conveyed.

  At this time, the portion of the laminate film A that is wound around the outer periphery of the rubber of the pressure roller 2 is located at the center portion where the media M is inserted than the portion located at the left and right ends where the media M is not inserted. However, since the medium M is wound around the outer periphery of the pressure roller 2, the wrinkle is formed from the boundary surface between the upper part where the medium M is inserted and the part where the medium M is not inserted. If wrinkles occur and the laminating process continues, the wrinkles expand to the center.

  That is, when the laminate film A is conveyed under pressure, since the friction of the central portion is larger than that of the left and right portions of the laminate film A, wrinkles are generated because the central portion tends to advance beyond the left and right portions.

  Further, at the position where the idle roller 9a of the conventional laminating apparatus is attached, as shown in FIGS. 10 and 11, when the release paper B is pulled away from the laminate film A, it is wound around the outer periphery of the pressure roller 2 of the laminate film A. Since the force acts in the direction in which the portion is pulled away from the pressure roller 2, that is, in the vertical direction, the winding becomes sweet. That is, wrinkles are generated because the laminate film A is peeled off at a position close to the position where the laminate film A starts to be wound around the pressure roller 2.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and a laminate is obtained by attaching a laminate film supplied from an original fabric to a surface of a printed matter or an output medium of a computer by applying pressure between a conveying roller and a pressure roller. An apparatus for preventing wrinkling in a laminating apparatus for forming
To the pressure roller entrance side of the laminate film supplied to the pressure roller,
Between the shaft that holds the laminate film original fabric and the roller shaft of the pressure roller, the laminate film is unwound from the laminate film original fabric held on the shaft, and the laminate film becomes the pressure roller. A guide member made of a rod-shaped body or a crown-shaped roller that is curved in a bow shape symmetrically from the central portion is arranged below a straight line connecting points on the outer circumference of the pressure roller that is circumscribed. .

  Further, an idle roller for peeling the release paper from the laminate film is provided at a position away from the pressure roller on the outlet side of the pressure roller.

  Further, an idle roller for peeling the release paper from the laminate film is provided at a position away from the pressure roller on the inlet side of the pressure roller.

  According to the present invention, the laminate film original film held on the shaft is disposed between the shaft of the laminate film and the roller shaft of the pressure roller on the pressure roller inlet side of the laminate film supplied to the pressure roller. Curved in a bow shape symmetrically from the center below the straight line connecting the point where the laminate film is unwound and the point on the outer circumference of the pressure roller where the laminate film circumscribes the pressure roller Since the guide member consisting of a rod-shaped body or a crown-shaped roller is arranged, when the laminate film comes into contact with the guide member composed of a rod-shaped body or a crown-shaped roller curved in an arcuate shape, the center portion is more than the left and right sides of the laminate film. Therefore, the laminate film is pressed against the pressure roller by the tension generated by the frictional resistance against the guide member. Since the vignetting state, to counteract the force of the central portion of the laminate film is going Susumo before the left and right sides, it is possible to prevent the generation of wrinkles generated in the laminate film.

  In addition, an idle roller for peeling the release paper from the laminate film is provided at a position away from the pressure roller on the outlet side of the pressure roller or a position away from the pressure roller on the inlet side of the pressure roller. By preventing the release paper from peeling off at the position where the film starts to wind around the pressure roller, it is possible to prevent the generation of a vertical force that tries to separate the part of the laminate film wound around the pressure roller from the pressure roller. It is possible to prevent the generation of wrinkles in the laminate film.

  Embodiments of the present invention will be described below. About the same structure as a prior art example, the same code | symbol is used and description is abbreviate | omitted.

  As shown in FIG. 1, the laminating apparatus of the present invention includes a side plate 10 fixed in parallel to the left and right sides of a frame, and the side plate 10 has a shaft 1 a of a transport roller 1 and an original film of a transport film C. A shaft 3a for supporting the core 3 of the film, a shaft 5a for supporting the core of the laminate film A, and a shaft 6a for supporting the core for winding the release paper B peeled off from the laminate film A are pivoted. ing.

  The conveyance roller 1 supported between the left and right side plates 10 is driven by a motor 11, and a pressure roller 2 is provided so as to make a pair with the conveyance roller 1 in the vertical direction. In the present invention, the conveying roller 1 has a tapered outer peripheral shape with an outer diameter that gradually decreases from the center toward both ends, and the pressure roller 2 has an outer diameter at the center and both ends. It has a straight outer shape that does not change.

  In the present embodiment, the laminating film A supplied to the pressure roller 2 is held by the shaft 5a between the laminating film A shaft 5a and the pressure roller 2 roller shaft 2a. Below the straight line connecting the point where the laminate film A is unwound from the original film 5 of the laminate film A and the point on the outer circumference of the pressure roller 2 where the laminate film A circumscribes the pressure roller 2 In addition, a rod-like body 8a that is curved in a bow shape symmetrically from the center portion shown in FIG. 5A, or a guide member 8 that is composed of a crown-shaped roller 8b shown in FIG. 5B is disposed.

  The laminate film A contacting the pressure roller 2 through the guide member 8 was subjected to the vertical tension generated by the frictional resistance with the guide member 8 and the lateral tension generated from the curved shape in the width direction. In this state, the pressure roller 2 is contacted at a point T shown in FIG.

  The laminate film A that has come into contact with the pressure roller 2 separates the release paper B at the contact point S between the front idle roller 9 and the tangent line of the pressure roller 2, and the separated release paper B is supported by the shaft 6a. It is wound around the wound core 6. The separation position of the release paper B changes in the vicinity of the contact point S due to variations in the adhesive force between the laminate film A and the release paper B and changes in the tension applied to the laminate film A. The laminate film A is shown in FIG. In order to peel the release paper B in the tangential direction at the point S, and to be pressed against the pressure roller 2 by the tension generated from the guide member 8 between T and S, the inlet side of the pressure roller 2 of the present invention In addition, a guide member 8 having a round bar-like shape 8a having a circular cross-section that is slightly bent in an arcuate shape on the lower side symmetrically from the central portion, or a guide member 8 comprising a crown-shaped roller 8b is separated to the outlet side. By providing an idle roller 9 for peeling the pattern paper B and having the laminate film A contact the pressure roller between the guide member 8 and the idle roller 9, When the film A comes into contact with the guide member 8 formed of the arcuately curved rod-shaped body 8a or the crown-shaped roller 8b, as shown in FIG. 3, the medium of the laminated film A wound around the pressure roller 2 A large tension acts on a portion where M is present and a small tension acts on a portion where the medium M does not exist. However, when the guide member 8 is disposed in the film path, the portion in contact with the pressure roller 2 Since the tension at the center is maximum and gradually decreases toward the left and right ends, both tensions (downward arrow and upward arrow) cancel each other, and the tension works almost evenly over the entire width of the laminate film A. Wrinkles do not occur in the laminate film A.

  2 and 4, an idle roller 9 for peeling the release paper B from the laminate film A is provided at a position away from the pressure roller 2 on the outlet side of the pressure roller 2, and the laminate film A By preventing the release paper B from being peeled off at the position where the winding roller 2 starts to wind around the pressure roller 2, the vertical force of the laminate film A that tries to separate the portion wound around the pressure roller 2 from the pressure roller 2 is reduced. Generation | occurrence | production can be prevented and generation | occurrence | production of the wrinkle which arises in the laminate film A can be prevented. 2 shows a form in which a rod-like body 8a is provided as the guide member 8, and FIG. 4 shows a form in which a crown-shaped roller 8b is provided.

  FIG. 6 shows another embodiment, in which the guide member 8 is placed on the inlet side of the laminate film A supplied to the pressure roller 2 between the shaft 5a of the laminate film A and the roller shaft 2a of the pressure roller 2. The laminate film A is unwound from the original film 5 of the laminate film A held on the shaft 5a, and on the outer circumference of the pressure roller 2 where the laminate film A circumscribes the pressure roller 2. Below the straight line connecting the points, only the guide member 8 composed of the rod-shaped body 8a or the crown-shaped roller 8b curved symmetrically from the center to the left and right is arranged, and the guide roller 8 has no idle roller 9, and the guide The release paper B is peeled off by the roller 8. Also in this embodiment, as shown in FIG. 3, a large tension is applied to the central portion of the laminate film A where the medium M is present, and the portion where the medium M is not present. Although a small tension works, a tension that works at a maximum at the central portion and gradually decreases toward the left and right ends in the contact portion when the guide member 8 is placed in the film path. Since the tensions (downward arrow and upward arrow) cancel each other and almost uniform tension is applied over the entire width of the laminate film A, the laminate film A is not wrinkled.

  FIG. 7 shows still another embodiment, in which the shaft 5a is disposed between the shaft 5a of the laminate film A and the roller shaft 2a of the pressure roller 2 on the inlet side of the laminate film A supplied to the pressure roller 2. The point where the laminate film A is unwound from the original film 5 of the laminate film A held on the sheet is connected to the point on the outer circumference of the pressure roller 2 where the laminate film A circumscribes the pressure roller 2. Below the straight line, a guide member 8 made of a rod-shaped body or a crown-shaped roller that is curved in a symmetrical manner from the center is arranged at a position separated from the pressure roller 2 on the inlet side of the pressure roller 2. An idle roller 9 for peeling the release paper B from the laminate film A is provided, and the release paper B is peeled before the laminate film A is supplied to the pressure roller 2. Also in this embodiment, the laminate film A does not wrinkle, and good lamination is possible.

  Furthermore, in each of the embodiments described above, on the inlet side of the laminate film A supplied to the pressure roller 2, between the shaft 5a of the laminate film A and the roller shaft 2a of the pressure roller 2, The point where the laminate film A is unwound from the original film 5 of the laminate film A held on the shaft 5a and the point on the outer circumference of the pressure roller 2 where the laminate film A circumscribes the pressure roller 2 A rod-shaped body or crown that is curved in a bow shape symmetrically from the center to a position below the straight line connecting the guide members 8 and at a position where the lowermost position of the guide member 8 is below the top of the pressure roller 2 More preferably, the guide member 8 made of a roller having a shape is arranged.

  Although the embodiment has been described with reference to the illustrated example, the present invention is not limited to this and can be implemented in various modes.

It is sectional drawing which shows the positional relationship with the flow of each film of a laminating device of this invention, a roller, a guide member, and a table. It is a partial expanded sectional view of the lamination apparatus of this invention. It is explanatory drawing which shows the tension distribution state which generate | occur | produces in a laminate film. It is a partial expanded sectional view of the lamination apparatus of this invention. It is an external view which shows the guide member of this invention. It is a partial expanded sectional view which shows other embodiment of this invention. It is a partial expanded sectional view which shows other embodiment of this invention. It is sectional drawing which shows the conventional laminating apparatus. It is explanatory drawing which shows the operation | movement of a conventional laminating apparatus, and a wrinkle generation state. It is explanatory drawing which shows the operation | movement of a conventional laminating apparatus, and a wrinkle generation state. It is explanatory drawing which shows the operation | movement of a conventional laminating apparatus, and a wrinkle generation state. It is explanatory drawing which shows the operation | movement of a conventional laminating apparatus, and a wrinkle generation state. It is explanatory drawing which shows the operation | movement of a conventional laminating apparatus, and a wrinkle generation state. It is explanatory drawing which shows the operation | movement of a conventional laminating apparatus, and a wrinkle generation state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveyance roller 2 Pressure roller 3 Conveyance film original fabric 4a, 4b Table 3a The axis | shaft which supports the original core of the conveyance film 5 Laminate film A original fabric 5a Supports the lamination film core Shaft 6 winding core 6a shaft 7 supporting the winding core for winding the release paper idle roller 8 guide member 9 idle roller 10 side plate 11 motor

Claims (3)

This is a wrinkle generation prevention device in a laminating machine that forms a laminate by attaching a laminate film supplied from the original fabric to the surface of printed matter or computer output media by applying pressure between the conveying roller and the pressure roller. There,
To the pressure roller entrance side of the laminate film supplied to the pressure roller,
Between the shaft that holds the laminate film original fabric and the roller shaft of the pressure roller, the laminate film is unwound from the laminate film original fabric held on the shaft, and the laminate film becomes the pressure roller. A guide member made of a rod-shaped body or a crown-shaped roller that is curved in a bow shape symmetrically from the central portion is arranged below a straight line connecting points on the outer circumference of the pressure roller that is circumscribed. Wrinkle prevention device for laminating equipment. 2. An apparatus for preventing wrinkle generation in a laminating apparatus according to claim 1, wherein an idle roller for peeling the release paper from the laminate film is provided at a position away from the pressure roller on the outlet side of the pressure roller. 2. An apparatus for preventing wrinkle generation in a laminating apparatus according to claim 1, wherein an idle roller for peeling the release paper from the laminate film is provided at a position away from the pressure roller on the inlet side of the pressure roller.

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