JP2013071346A - Apparatus and method for producing laminated sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and method for producing a laminated sheet, capable of preventing the sticking of a press trace in an adhesive sheet, even when being wound and loaded with winding pressure.SOLUTION: The laminated sheet manufacturing apparatus 1 has a sending-out means 10 for sending out an original fabric R1, a cutting means 20 which forms a cut CU in an original adhesive sheet S0 to form the adhesive sheet S and an unnecessary sheet S3, a take-up means 30 for taking up the unnecessary sheet S3, a lamination means 40 for forming a belt-like contact prevention member CP which is larger than the thickness of the adhesive sheet S and includes the area between the adhesive sheets S, a fixing means 50 for forming the laminated sheet L by fixing the formed contact prevention member CP, and a recovery means 60 for recovering the laminated sheet L.

Description

  The present invention relates to a laminated sheet manufacturing apparatus and a laminated sheet manufacturing method.

When a laminated sheet provided with adhesive sheets at a constant interval is used as a winding body, the winding diameter of the winding body gradually increases. For this reason, the adhesive sheet does not completely overlap with the adhesive sheet that is located before the first roll, that is, the nearest inside, or the adhesive sheet that is located after the first roll, that is, the nearest outside. With a gap. As a result, a winding pressure is applied to the laminated sheet when it is used as a wound body, and the adhesive sheet is stamped by the edge of the adhesive sheet located on the nearest inner side or the nearest outer side.
Therefore, when a laminated sheet is used as a winding body, a laminated sheet is used in which a protective layer is formed to secure a gap between the nearest outer release sheet (hereinafter referred to as the outer release sheet) and the adhesive sheet. (For example, refer to Patent Document 1).

The laminated sheet described in Patent Document 1 includes a release sheet, a sticking sheet as an adhesive sheet provided at a certain interval in the center in the width direction of the release sheet, and a release sheet when the laminated sheet is stacked. And a protective layer for securing a gap between the adhesive sheet and the adhesive sheet. When this laminated sheet is a wound body, a gap corresponding to the thickness of the protective layer is formed between the adhesive sheet and the outer release sheet, so that the adhesive sheet is prevented from being indented due to overlap displacement. be able to.
Patent Document 1 describes an apparatus in which a resin coating apparatus that continuously or intermittently discharges a resin is disposed in a conveyance path of a laminated sheet as an apparatus for manufacturing such a laminated sheet. In this apparatus, by discharging resin from the resin coating device, the resin is applied to the laminated sheet continuously or intermittently along the conveying direction of the laminated sheet, and the applied resin is pressed by a press roller. A protective layer having a uniform thickness is formed.

JP 2008-126518 A

However, in the laminated sheet manufacturing apparatus described in Patent Document 1, since the protective layer is formed by simply discharging resin, the formed protective layer can be provided only on both sides in the width direction of the release sheet. . That is, when a laminated sheet is used as a winding body, in order to prevent the adhesive sheet from being stamped with an overlap shift, the adhesive sheet that supports the outer release sheet over a wide range and includes the space between the adhesive sheets. However, in the apparatus described in Patent Document 1, it is not possible to provide a protective layer in a wide range or to provide details such as between adhesive sheets.

  An object of the present invention is to provide a laminated sheet manufacturing apparatus and a laminated sheet manufacturing method for manufacturing a laminated sheet that can prevent the adhesive sheet from being damaged even when a winding pressure is applied to the wound body. is there.

  In order to achieve the above object, the laminated sheet manufacturing apparatus of the present invention has a plurality of adhesive sheets in which an adhesive layer is laminated on one surface of a base sheet and a predetermined release sheet is formed on the strip-like release sheet via the adhesive layer. A feeding means for feeding out the original fabric temporarily attached at intervals; and a laminating means for laminating a resin layer having a thickness larger than that of the adhesive sheet at a position different from the adhesive sheet of the release sheet to form a contact preventing member. The laminating means has a configuration in which a plate capable of printing the resin layer in a predetermined shape is provided.

  Further, in the laminated sheet manufacturing apparatus of the present invention, a belt-like original adhesive sheet in which an adhesive layer is laminated on one surface of a belt-like base material sheet is temporarily attached to the belt-like release sheet via the adhesive layer. A feeding means for feeding out the original fabric, and a cutting means for forming an adhesive sheet inside the cut and forming an unnecessary sheet outside the cut by forming a closed-loop cut in the original adhesive sheet And a laminating unit that laminates a resin layer on the other surface of the base sheet in the unnecessary sheet to form a contact prevention member, and the laminating unit is a plate capable of printing the resin layer in a predetermined shape. May be provided.

Moreover, it is preferable that the said lamination | stacking means is equipped with the plate cylinder which hold | maintains the said plate, and the impression cylinder arrange | positioned facing this plate cylinder.
Furthermore, the laminated sheet manufacturing apparatus of the present invention is provided with detection means for detecting the position of the adhesive sheet in the previous stage of the lamination means, and the lamination means uses the contact preventing member based on the detection result of the detection means. It is preferable that printing is provided.

On the other hand, in the method for producing a laminated sheet according to the present invention, a plurality of adhesive sheets each having an adhesive layer laminated on one surface of a base sheet are temporarily attached to a strip-like release sheet via the adhesive layer at predetermined intervals. A configuration is adopted in which the contact prevention member is formed by feeding out the original fabric and printing a resin layer having a thickness larger than that of the adhesive sheet in a predetermined shape at a position different from the adhesive sheet of the release sheet. .
Moreover, in the laminated sheet manufacturing method of the present invention, a belt-like original adhesive sheet in which an adhesive layer is laminated on one surface of a belt-like substrate sheet is temporarily attached to the belt-like release sheet via the adhesive layer. By unwinding the original fabric and forming a closed loop-shaped cut in the original adhesive sheet, an adhesive sheet is formed inside the cut, and an unnecessary sheet is formed outside the cut, in the unnecessary sheet You may employ | adopt the structure of printing a resin layer on the other surface of a base material sheet in a defined shape, and forming a contact prevention member.

  According to the present invention as described above, since the contact prevention member is formed by laminating the resin layers by printing, it is possible to form the contact prevention member over a wide range or to have a complicated shape. In addition, when dealing with such a laminated pattern of the contact prevention members, it is only necessary to change the plate used for printing.

  Further, if the laminating means includes a plate cylinder for holding the plate and an impression cylinder disposed opposite to the plate cylinder, the laminating means can be configured by using a conventional printing apparatus, thereby reducing costs. Can do.

  Furthermore, if a detecting means for detecting the position of the adhesive sheet is provided in the previous stage of the laminating means, and the laminating means can be printed based on the detection result of the detecting means, for example, each adhesive sheet on the release sheet can be printed. Even if the mutual intervals are non-uniformly arranged, the contact preventing member can be formed at a position different from each adhesive sheet without being influenced by the interval between the adhesive sheets.

1 is an overall view of a laminated sheet manufacturing apparatus according to an embodiment of the present invention. The perspective view of the lamination sheet manufactured with the lamination sheet manufacturing apparatus of FIG. The fragmentary sectional view when using a laminated sheet as a winding body.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
When the laminated sheet is a winding body, the laminated sheet located on the nearest inner side of the reference laminated sheet portion is called the inner laminated sheet, and the laminated sheet located on the nearest outer side is called the outer laminated sheet. And each layer and member which comprise these inner side laminated sheets or outer side laminated sheets may also be described by giving an inner or outer name.

  In FIG. 1, the laminated sheet manufacturing apparatus 1 includes a band-shaped original adhesive sheet S0 having an adhesive layer AD having a thickness of 20 μm on one surface of a base sheet BS having a thickness of 50 μm, and having a thickness of 38 μm via the adhesive layer AD. The feeding means 10 for feeding the original fabric R1 temporarily attached to the release sheet RL, the cutting means 20 for forming the cut CU in the original adhesive sheet S0, the winding means 30 for winding up the unnecessary sheet S3, and the adhesive sheet S Laminating means 40 for forming a contact prevention member CP having a thickness of 150 μm larger than the thickness and corresponding to the entire outer periphery of the adhesive sheet S; a fixing means 50 for fixing the formed contact prevention member CP to form a laminated sheet L; And a collecting means 60 for collecting the laminated sheet L.

  The feeding means 10 winds and supports the original fabric R1 in a roll shape, and guides and drives the support roller 12 driven by a rotation motor 11 as a driving device, and the original fabric R1 fed from the support roller 12. A driving roller 14 that is driven by a rotation motor 13 as a device, and a pinch roller 15 that sandwiches the original fabric R1 between the driving roller 14 are provided.

  The cutting means 20 is disposed opposite to the die cut roller 22 having a die cutting roller 22 having a cutting blade 21 for forming a closed loop cut CU in the original adhesive sheet S0, and the original adhesive sheet S0 and the release sheet RL. The platen roller 23 is provided. The cutting blade 21 forms a cut CU having a depth that penetrates the adhesive layer AD and does not penetrate the release sheet RL from the base sheet BS side, and forms a circular adhesive sheet S inside the cut CU. At the same time, a strip-shaped unnecessary sheet S3 is formed outside the cut CU. The die-cut roller 22 and the platen roller 23 are provided so as to be rotatable in synchronization with a rotation motor 24 and a rotation motor 25 as drive devices. The cutting blade 21 is preferably subjected to non-adhesion treatment such as a fluororesin coating so that the adhesive of the original adhesive sheet S0 does not adhere.

  The winding means 30 includes a peeling roller 31 that peels the unnecessary sheet S3 from the peeling sheet RL, a pinch roller 32 that is disposed opposite to the peeling roller 31 with the original fabric R1 interposed therebetween, and a rotation motor as a driving device. A take-up roller 33 that is rotatably provided by the take-up roller 34 and winds up the unnecessary sheet S3 peeled off by the peel roller 31.

  The laminating means 40 is a rotary screen printer, and is provided above the adhesive sheet S conveyed in the right direction in FIG. 1 and holds a plate and a plate that are rotatably provided by a rotation motor 41 as a driving device. A rotary screen 42 as a printing cylinder, a squeegee (not shown), and an impression cylinder 44 that is disposed to face the rotary screen 42 with a release sheet RL interposed therebetween and is rotatably provided by a rotation motor 43 as a driving device. ing. The laminating means 40 is configured to push out ink stored in the rotary screen 42 with a squeegee.

  The fixing unit 50 is provided above the adhesive sheet S conveyed in the right direction in FIG. 1 and on the right side of the rotary screen 42, and fixes the contact prevention member CP onto the release sheet RL. It is possible to exemplify the use of those that generate fixing energy such as hot air, ultraviolet rays, infrared rays, microwaves, cold winds, and natural winds according to the characteristics of the ink to be configured.

  The collection means 60 includes a drive roller 62 that is rotatably provided by a rotation motor 61 as a drive device, a pinch roller 63 that is disposed opposite to the drive roller 62 with the laminated sheet L interposed therebetween, and a rotation as a drive device. A collection roller 65 that is rotatably provided by the motor 64 and collects the laminated sheet L is provided.

  In the laminated sheet manufacturing apparatus 1 described above, as a procedure for producing the laminated sheet L, first, as shown in FIG. 1, the raw fabric R1 is set on the support roller 12, and between the drive roller 14 and the pinch roller 15 , Between the die-cutting roller 22 and the platen roller 23 and between the peeling roller 31 and the pinch roller 32. The original adhesive sheet S0 is fixed to the take-up roller 33, and the release sheet RL is passed between the rotary screen 42 and the impression cylinder 44, between the drive roller 62 and the pinch roller 63, and fixed to the collection roller 65. Keep it.

  In this state, the rotation motors 11, 13, 24, 25, 34, 41, 43, 61, 64 are driven synchronously, and the support roller 12, the drive roller 14, the die cut roller 22, the platen roller 23, and the take-up roller are driven. 33, the rotary screen 42, the impression cylinder 44, the drive roller 62, and the collection roller 65 are rotated to feed the original fabric R1 to the right in FIG.

  When the original fabric R1 passes between the die cut roller 22 and the platen roller 23, the cutting blade 21 forms the cut CU in the original adhesive sheet S0, and the adhesive sheet S is formed inside the cut CU. At the same time, an unnecessary sheet S3 is formed outside the cut CU. Thereafter, the unnecessary sheet S3 is guided by the peeling roller 31 and taken up by the take-up roller 33, and the adhesive sheet S is laminated in the longitudinal direction of the peeling sheet RL at a predetermined interval in the original fabric R2. And is conveyed between the rotary screen 42 and the impression cylinder 44.

  When the original fabric R2 passes between the rotary screen 42 and the impression cylinder 44, the contact preventing member CP is printed on the release sheet RL. Then, the fixing unit 50 applies fixing energy such as hot air to the contact prevention member CP, whereby the contact prevention member CP is fixed on the release sheet RL, and the laminated sheet L is formed. The laminated sheet L is collected as a winding body by the collection roller 65 through the drive roller 62 and the pinch roller 63.

As shown in FIG. 2, the laminated sheet L produced in this way is a strip-shaped release sheet RL and a circular adhesive layer laminated at a predetermined interval in the longitudinal direction of one surface of the release sheet RL. The sheet S is provided on one surface of the release sheet RL, and includes a contact prevention member CP laminated at a different position from the adhesive sheet S.
In the present embodiment, the base sheet BS of the adhesive sheet S is made of a resin such as olefin such as polyethylene, and the adhesive layer AD is made of an acrylic pressure-sensitive adhesive.
Further, the release sheet RL is subjected to non-adhesion treatment such as silicone treatment on one surface of a resin such as polyethylene terephthalate.

As shown in FIG. 2, the contact prevention member CP is set to a thickness of 150 μm, is thicker than the adhesive sheet S, does not overlap the adhesive sheet S, and does not overlap the adhesive sheet S. It is laminated in a band shape including two parallel lines connecting the outer edges. Therefore, as shown in FIG. 3, in the laminated sheet L collected by the collection roller 65, there is a difference in thickness between the contact prevention member CP and the adhesive sheet S between the outer release sheet RL <b> 1 overlapping the adhesive sheet S. A gap H having a corresponding height of 80 μm is formed. In addition, FIG. 3 is the figure which looked at the partial cross section from the winding center axis direction of the said winding body about the lamination sheet L used as the winding body, However, in order to make it easy to understand, the lamination sheet L is illustrated flatly. And outer side peeling sheet RL1 receives a winding pressure, and deform | transforms toward the radial inside (lower part of FIG. 3) of a winding body, However Since contact prevention member CP is formed in the strip | belt shape containing the area | region between adhesive sheets. The deformable outer release sheet RL1 can be supported by the contact prevention member CP even in the region between the adhesive sheets. Therefore, it is possible to prevent the outer adhesive sheet S1 from being pressed against the adhesive sheet S via the outer release sheet RL1 and causing damage to the adhesive sheet S.
Further, when the laminated sheet L is a winding body, the contact preventing member CP is formed so that the adhesive sheet S is the inner contact preventing member even if the outer laminated sheet L1 and the inner laminated sheet L2 are overlapped in the arc direction. It is formed in a shape that does not overlap with CP2 and the outer contact prevention member CP1 in plan view. Thereby, even if the winding pressure is applied to the laminated sheet L and the release sheet RL is deformed radially inward, the edges of the inner contact prevention member CP2 and the outer contact prevention member CP1 are not pressed against the adhesive sheet S. It is possible to prevent the adhesive sheet S from being pressed.

  In addition, as a method of printing the ink in a strip shape including the region between the adhesive sheets in this way, the ink does not pass on the adhesive sheet S, and the ink passes only in the strip-shaped laminated portion including the region between the adhesive sheets. The designed rotary screen 42 is manufactured, ink is spread on the rotary screen 42, and the ink is pushed out by a squeegee and printed. By using such a printing method, the contact preventing member CP can be printed and laminated in a predetermined shape.

  According to the embodiment as described above, the contact prevention member CP is formed by laminating the resin layers by printing. Therefore, the contact prevention member CP can be formed over a wide range such as a band shape including the region between the adhesive sheets, It becomes possible to make it into a shape. In addition, when corresponding to such a lamination pattern of the contact prevention member CP, it is only necessary to change the rotary screen 42, so that it can be handled without difficulty.

As described above, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations. In addition, the description of the shape, material, and the like disclosed above is exemplary for ease of understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such restrictions is included in this invention.

For example, in the above-described embodiment, the contact prevention member CP is stacked on the release sheet RL from which the unnecessary sheet S3 is removed. However, the contact prevention member CP may be stacked on the unnecessary sheet S3 without removing the unnecessary sheet S3. Good. Thus, by laminating the contact prevention member CP on the unnecessary sheet S3, for example, the thickness of the contact prevention member CP can be set to 80 μm, and the contact prevention member CP compared to the contact prevention member CP of the embodiment. Wasteful consumption of the material forming the film can be suppressed.
Furthermore, the contact prevention member CP may be formed intermittently without being formed in a band shape.
The feeding means 10 may be configured to separately supply the original adhesive sheet S0 and the release sheet RL. In this case, the original adhesive sheet S0 wound in a roll shape is supported by the support roller 12 of the above-described embodiment, and another similar to the support roller 12 driven by a driving device that supports the release sheet RL wound in a roll shape. What is necessary is just to add a drive roller. The original adhesive sheet S0 and the release sheet RL can be sandwiched between the drive roller 14 and the pinch roller 15.

  Further, in the above embodiment, the cutting means 20 and the winding means 30 are not provided in the laminated sheet manufacturing apparatus 1, and the support roller 12 is an original in which a plurality of adhesive sheets S are temporarily attached to the release sheet RL at predetermined intervals. It is good also as paying out anti-R2.

Furthermore, in the said embodiment, the contact prevention member CP may be connected in the width direction center part of the lamination sheet L. FIG. That is, the contact prevention member CP may include a circular hole surrounding the outer periphery of the adhesive sheet S. The circular hole can have various shapes such as an ellipse, an ellipse, a square, and a polygon other than a circle.
In addition, a detection unit such as an imaging unit or an optical sensor that detects the position of the adhesive sheet S is provided in the previous stage of the stacking unit 40, and the contact preventing member CP is stacked by the stacking unit 40 based on the detection result of the detection unit. It may be configured. In this case, the stacking unit 40 can be configured to partially interrupt printing and perform intermittent printing. According to such a configuration, for example, even when the original fabric R2 in which the interval between the adhesive sheets S on the release sheet RL is formed non-uniformly is targeted, the contact preventing member is surely located at a position different from each adhesive sheet S. CP can be laminated. At this time, the contact prevention member CP may be intermittently formed with respect to the conveyance direction of the raw fabric R2.

In addition, the types and materials of the original adhesive sheet S0 and the adhesive sheet S in the present invention are not particularly limited. For example, those having an intermediate layer between the base sheet BS and the adhesive layer AD, and other layers Three or more layers such as those having Further, the shape of the adhesive sheet S is not limited to a circle, and may be an arbitrary shape. The shape of the contact preventing member CP can be any shape as long as the laminated sheet L is a winding body as long as it does not overlap the outer and inner adhesive sheets S1 and S2 in plan view.
In addition to the rotary screen printer, the laminating means 40 for laminating the contact preventing member CP includes a solvent coating method, gravure printing, screen printing, and any printing such as relief printing, intaglio printing, planographic printing, stencil printing, etc. The method is not limited as long as the ink can be laminated.

  The drive device in the embodiment includes an electric device such as a rotation motor, a linear motion motor, a linear motor, a single axis robot, an articulated robot, an actuator such as an air cylinder, a hydraulic cylinder, a rodless cylinder, and a rotary cylinder. In addition to these, a combination of them directly or indirectly may be employed (some of them overlap with those exemplified in the embodiment).

DESCRIPTION OF SYMBOLS 1 Laminated sheet manufacturing apparatus 10 Feeding means 20 Cutting means 40 Laminating means 42 Rotary screen (plate and plate cylinder)
44 Pressure cylinder AD Adhesive layer BS Base sheet L Laminated sheet RL Release sheet S Adhesive sheet CP Contact prevention member S3 Unnecessary sheet S0 Original adhesive sheet CU Cut SP Gap R1 Original fabric

Claims (6)

A feeding means for feeding out the original fabric temporarily attached to the strip-like release sheet at a predetermined interval by a plurality of adhesive sheets laminated with an adhesive layer on one surface of the base sheet;
Laminating means for forming a contact preventing member by laminating a resin layer having a thickness larger than that of the adhesive sheet at a position different from the adhesive sheet of the release sheet,
The laminated sheet manufacturing apparatus, wherein the laminating means includes a plate capable of printing a resin layer in a predetermined shape. A feeding means for feeding out the original fabric temporarily attached to the strip-shaped release sheet by the strip-shaped original adhesive sheet in which the adhesive layer is laminated on one surface of the strip-shaped base sheet;
By forming a closed-loop cut in the original adhesive sheet, a cutting means for forming an adhesive sheet inside the cut and forming an unnecessary sheet outside the cut,
Laminating means for forming a contact prevention member by laminating a resin layer on the other surface of the base sheet in the unnecessary sheet,
The laminated sheet manufacturing apparatus, wherein the laminating means includes a plate capable of printing a resin layer in a predetermined shape.   3. The laminated sheet manufacturing apparatus according to claim 1, wherein the laminating unit includes a plate cylinder that holds the plate and an impression cylinder that is disposed to face the plate cylinder. 4.   Detection means for detecting the position of the adhesive sheet is provided in front of the lamination means, and the lamination means is provided so that the contact preventing member can be printed based on the detection result of the detection means. The laminated sheet manufacturing apparatus according to any one of claims 1 to 3. A plurality of adhesive sheets in which an adhesive layer is laminated on one surface of the base sheet is fed out the original fabric temporarily attached to the strip-shaped release sheet through the adhesive layer at a predetermined interval,
A method for producing a laminated sheet, wherein a contact prevention member is formed by printing a resin layer having a thickness larger than that of the adhesive sheet in a predetermined shape at a position different from the adhesive sheet of the release sheet. A strip-shaped original adhesive sheet in which an adhesive layer is laminated on one surface of the strip-shaped base sheet is fed out the original fabric temporarily attached to the strip-shaped release sheet via the adhesive layer,
By forming a closed-loop cut in the original adhesive sheet, forming an adhesive sheet inside the cut, and forming an unnecessary sheet outside the cut,
A method for producing a laminated sheet, comprising: forming a contact preventing member by printing a resin layer in a predetermined shape on the other surface of the base sheet in the unnecessary sheet.

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