JP2008163155A - Adhesive agent transfer sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive agent transfer sheet which can be desirably stored and transported while it keeps a state not adversely affecting another sheet. <P>SOLUTION: The adhesive agent transfer sheet A essentially consists of at least a release substrate 1, an adhesive agent layer 2 having an adhesive applied region 21 prepared by spottily coating an adhesive agent g on the release substrate 1 with adhesive blocks 25 each of which is circular in a plan view and an adhesive agent refuge region 22 formed around the circumferential periphery of the release substrate 1, and a releasable covering material 3 which covers the adhesive agent layer 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an adhesive transfer sheet capable of suitably transferring an adhesive.

  Conventionally, in daily life and office use, in order to fix the adherend to an arbitrary location, the adhesive is applied to any one surface of the adherend, and is fixed by pressure bonding to any target surface. Instead of the embodiment, the adherend is fixed using various adhesive products such as a double-sided tape and a transfer tool. Also, mainly for office use, a mode of transferring an adhesive, a colorant, and a masking material is widely performed.

  Here, the adhesive and double-sided tape as described above and the transfer tool for transferring the masking tape are collectively referred to as a transfer auxiliary product.

  On the other hand, for industrial use, for example, as disclosed in Patent Document 1, a sheet for positioning an electronic component or the like using an adhesive has been proposed. The one described in this document transfers an adhesive that has been previously supported on a peeling substrate to a printed circuit board, and further places the electronic component on the printed circuit board where the adhesive has been transferred. Can be suitably positioned.

In recent years, a pressure-sensitive adhesive transfer sheet having a pressure-sensitive adhesive coated on a release substrate is placed on a stage, and the pressure-sensitive adhesive transfer sheet can be used for, for example, mechanical parts for industrial use or photographic sheets or newspapers for office use. A technique is disclosed in which a pressure-sensitive adhesive is transferred to an adherend according to its shape by adhering an adherend such as scrap such as a cutout, and can be suitably applied to a desired position (Japanese Patent Application No. 2006-2006). No. 170692).
JP-A-5-154438

  However, in the case of the sheet as described above, the release substrate is used in a state of being cut and formed into a predetermined shape, and when the sheet is stored and transported, the cut and formed sheet is laminated or wound. In other words, it must be held in a state of being stacked on a plurality of layers.

  In such a case, as described above, as shown in FIGS. 8 and 9, the adhesive g applied on the peeling substrate 100 protrudes from the side surface where the peeling substrate 100 is cut and turns around. As a result, the adhesive g may adhere to the side surface of the multilayered release substrate 100 or the side surface of the release coating material 300 that sandwiches the adhesive g together with the release substrate 100. If it becomes so, each sheet | seat B which laminated | stacked will mutually adhere, and it may occur that the trouble in the handling at the time of use is caused.

  Furthermore, when the adhesive g is in a block shape as shown in the drawing when the adhesive g is applied, depending on the shape of each adhesive unit, when the release coating material 300 is peeled off, the adhesive g may be mistaken. There is a possibility that the adhesive g is transferred to the peeling coating material 300 side.

  These situations can occur more prominently when the sheet B is stored for a long period of time or laminated in a large amount.

  The present invention focuses on such problems and provides an adhesive transfer sheet that can be suitably stored and transported while maintaining a state in which the adhesive does not affect other sheets.

  In order to achieve such an object, the present invention takes the following measures. That is, the pressure-sensitive adhesive transfer sheet according to the present invention is composed only of a peeling base material and a straight line or a curve in which the pressure-sensitive adhesive is intermittently applied on the peeling base material and has an obtuse angle at the peripheral edge. A pressure-sensitive adhesive layer having a pressure-sensitive adhesive arrangement region composed of a plurality of pressure-sensitive adhesive blocks formed in a bulging shape bulged toward the surface, and a pressure-sensitive adhesive retraction region formed at the peripheral edge of the release substrate, and the pressure-sensitive adhesive layer And a release coating material that can be coated.

  Here, “the bulging shape in which the peripheral edge portion is formed of a straight line or a curved line and bulges outward from the center” means, for example, a bulging shape at the peripheral edge portion as represented by a circular shape or a regular polygon. It is an expression indicating a shape that does not include a diagonal line of the protruding shape or an edge that divides the shape. In other words, it can be said that the peripheral portion is always bulged from the center of the shape by a straight line or a curve.

  If it is such, by providing a pressure-sensitive adhesive retreat area at the peripheral edge where the pressure-sensitive adhesive transfer sheet is cut and formed, the edge of the peeling substrate or peeling coating material at the cut side It is possible to effectively avoid the problem that the pressure-sensitive adhesive bulges to the side by protruding to the side, and then the peeling base materials or the peeling base material and the peeling coating material are erroneously fixed. In addition, due to the shape of the pressure-sensitive adhesive block, the pressure-sensitive adhesive block is transferred to the side of the peeling coating layer when peeling the peeling coating layer in use as a configuration that does not include the diagonal line and the edge to be divided. It has become possible to effectively solve the problem.

  In order to effectively avoid the formation of wrinkles and bubbles between the release base material layer, the release coating material and the adhesive layer when using such an adhesive transfer sheet, a void portion is used. It is desirable that the pressure-sensitive adhesive layer is open to the side surface of the pressure-sensitive adhesive layer over substantially the entire surface of the pressure-sensitive adhesive layer.

  In order to make the thickness of the pressure-sensitive adhesive layer uniform and to concentrate the stress when pressing the pressure-sensitive adhesive layer against paper or other members, and to fix it properly, the pressure-sensitive adhesive portions are arranged at equal intervals. What is necessary is just to have a some adhesive block made.

  Examples of the shape of the dot, that is, the pressure-sensitive adhesive block, which does not easily follow the release substrate and is easily held on the release substrate side when the release coating material is peeled off, include those formed in a circular shape in plan view.

  Here, in the adhesive block, for example, as described above, for example, the dot shape is chipped, and it is actually accidentally peeled off from the stripping base material by accidentally following the stripping coating material from the portion lacking the acute angle shape. Although it may occur, the above situation can be effectively avoided if the pressure-sensitive adhesive block is constituted only by a plurality of dot-shaped pressure-sensitive adhesives each having a circular shape in plan view.

  On the other hand, it is desirable that the pressure-sensitive adhesive contains a dye that can be sensitive to the sensor as a mode that can avoid a situation in which the peeling base material is cut by mistake at the position of the pressure-sensitive adhesive portion when the peeling substrate is cut in the manufacturing process. In such a case, the existing various dyes can be adopted as long as the type of the dye used is a dye that can be sensitive to various existing sensors.

  As a preferred embodiment in which the pressure-sensitive adhesive transfer sheet can be preferably manufactured, stored and used, a release substrate is formed into a rectangular shape in plan view, and the pressure-sensitive adhesive retracting area is provided on the four sides around the rectangle. Can be mentioned.

  According to the present invention, by providing a pressure-sensitive adhesive retracting region at the peripheral edge where the pressure-sensitive adhesive transfer sheet is cut and formed, the pressure-sensitive adhesive is applied from the edge of the release substrate or the release coating material to the side at the cut location. It is possible to effectively avoid the problem that the agent protrudes and wraps around and the peeling base materials or the peeling base material and the peeling coating material are erroneously fixed. By doing so, even in a state where a large number of such pressure-sensitive adhesive transfer sheets are laminated for a long period of time, a pressure-sensitive adhesive that can be suitably stored and transported while maintaining a state in which the pressure-sensitive adhesive transfer sheet can be suitably used. An agent transfer sheet can be provided.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The pressure-sensitive adhesive transfer sheet A according to the present embodiment transfers a dot-shaped pressure-sensitive adhesive 26, which will be described later, applied on the peeling substrate 1 to a machine part such as a nut or a washer, and positions these machine parts at a desired location. Is to do. As described above, by temporarily positioning the mechanical component, it is possible to effectively reduce the operation of the finger for the operator to position the component. Therefore, by adopting such an adhesive transfer sheet A, it is possible to reduce the work effort by the worker and improve the work efficiency.

  Here, the pressure-sensitive adhesive transfer sheet A according to the present embodiment is composed of a peeling base material 1 and an adhesive g intermittently applied on the peeling base material 1 and constituted by a peripheral edge straight line or a curve, and from the center to the outside. A pressure-sensitive adhesive having a pressure-sensitive adhesive arrangement region 21 composed of a plurality of pressure-sensitive adhesive blocks formed in a circular shape in plan view, which is a bulging shape bulged toward the surface, and a pressure-sensitive adhesive retracting region 22 formed at the peripheral edge of the peeling substrate 1. The adhesive layer 2 and the release coating material 3 covering the pressure-sensitive adhesive layer 2 are at least provided.

  Hereinafter, the configuration of the pressure-sensitive adhesive transfer sheet A according to this embodiment will be described.

  As described above, the pressure-sensitive adhesive transfer sheet A mainly has the peeling base material layer 1, the pressure-sensitive adhesive layer 2, and the peeling coating material 3.

  As shown in FIG. 1, FIG. 2, etc., the release substrate layer 1 is provided with a release layer made of silicon resin, fluororesin, or the like in order to give a release effect to the surface of paper that does not have a release effect, for example It is formed into a rectangular shape in plan view using a base material. In addition, in order to be detachable from the pressure-sensitive adhesive layer 2, as a base material, for example, a plastic film such as polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polyvinyl chloride (PVC), Examples thereof include papers such as glassine paper, and those employing metal foils.

  As shown in FIG. 1, the release coating material 3 covers the pressure-sensitive adhesive layer 2 from the upper side of the release substrate 1. In the present embodiment, the release coating material 3 is mainly formed of a paper material having a thickness and color different from those of the release base material 1, and the surface of the paper material is subjected to the same release treatment as described above.

  As shown in FIG. 1, the pressure-sensitive adhesive layer 2 includes a pressure-sensitive adhesive placement region 21 where the pressure-sensitive adhesive g is placed, and a pressure-sensitive adhesive retreat region 22 where the pressure-sensitive adhesive g is retreated around the pressure-sensitive adhesive placement region 21. It is what has.

  The pressure-sensitive adhesive arrangement area 21 has a pressure-sensitive adhesive part 23 and a gap part 24. Here, the pressure-sensitive adhesive part 23 is specifically composed of a plurality of pressure-sensitive adhesive blocks 25 separated by a gap 24. In the present embodiment, the pressure-sensitive adhesive block 25 is coated with only a dot-shaped pressure-sensitive adhesive 26 having a circular shape in plan view on the peeling substrate 1, for example, with a diameter of 0.2 mm to 3.0 mm and a coating thickness of 10 μm to 200 μm. It is configured by applying work. And in this embodiment, the adhesive g contains the adhesive composition which is not shown in figure which is the main body of the adhesive g, and the pigment | dye b for coloring the adhesive g. As the adhesive g, various materials such as acrylic, rubber, silicon, rosin and urethane can be used. In addition, the dye b that can be employed in the present embodiment is not particularly limited, and various kinds of existing dyes that can be detected by a sensor can be used. In addition, as a method of applying pattern coating on the surface of the peeling substrate 1, existing printing methods such as screen printing, gravure printing, offset printing, flexographic printing, and gravure printing can be used. On the other hand, the gap 24 shows a space interposed between the plurality of adhesive blocks 25 as shown in the figure, and is open to the side surface of the adhesive layer 2 over substantially the entire surface of the adhesive layer 2. It is configured to do. In other words, the substantially entire surface of the pressure-sensitive adhesive layer 2 is configured to communicate with the side surface.

  Therefore, in the present embodiment, as described above, the pressure-sensitive adhesive layer 2 has the pressure-sensitive adhesive retreat area 22. As shown in the drawing, the pressure-sensitive adhesive retracting region 22 indicates a region where the fixed-size pressure-sensitive adhesive g is not applied at the peripheral edge portion, that is, the four sides of the peeling substrate 1. Specifically, it is configured by retreating in a frame shape about 3 mm or more from the periphery of the peeling substrate 1. Specifically, as shown particularly in FIG. 1, the adhesive retracting region 22 is retracted 3 mm from the long side edge of the release substrate 1 and 10 mm from the short side edge. It is said. Furthermore, in this embodiment, the release coating material 3 is such that the edge on the short side is positioned 5 mm outside the edge of the adhesive placement region 21 on the long side.

  In the case of the pressure-sensitive adhesive transfer sheet A having such a configuration, as shown in FIGS. 4 and 5, when the release coating material 3 is peeled from the release base material 1 and the pressure-sensitive adhesive layer 2, the pressure-sensitive adhesive retraction area 22 is formed. Since the adhesive g is not attached to the side surface of the peeling base material 1 or the peeling coating material 3 because it is provided, the peeling coating material 3 can be peeled well. Further, the shape of the adhesive block 25 is formed by only a straight line or a curved line having an obtuse angle at the peripheral edge, and has a circular shape in plan view, which is a bulging shape bulging outward from the center. It is also effectively avoided that the adhesive block is suddenly transferred to the material 3 at the time of peeling. Specifically, the point that the pressure-sensitive adhesive part 23 applies only the dot-shaped pressure-sensitive adhesive 26 having a circular shape in plan view onto the peeling substrate 1 also contributes to a suitable peeling operation. Here, in the conventional case, as shown in FIG. 8 and FIG. 9, there is a problem that the adhesive g adheres to the side of the peeling coating material 300, or there is an illustration other than a circular shape in plan view as shown in FIG. 8. In this case, when the half-moon-shaped thing peels off the peeling coating material 300, it will cause the malfunction that it will adhere to the peeling coating material 300 accidentally. On the other hand, the pressure-sensitive adhesive transfer sheet A according to the present embodiment effectively uses the pressure-sensitive adhesive block 25 without causing the pressure-sensitive adhesive block 25 to adhere to the release coating material 3 as shown in FIGS. It is what you get.

  Subsequently, a manufacturing process ST for manufacturing such an adhesive transfer sheet A by employing, for example, gravure printing will be schematically shown in FIG. 6 and described. In addition, the said manufacturing process ST does not limit the structure of the above-mentioned adhesive transfer sheet A at all, It is possible to employ | adopt various manufacturing methods besides the said manufacturing process ST.

  Such a production process ST includes an adhesive application step ST1 for applying the adhesive g to the release substrate base paper 1p before cutting the release substrate 1 using the drum D, and a release substrate on which the adhesive g has been applied. A multi-layer process ST2 for layering the release coating material base paper 3p before cutting the release coating material 3 on the base paper 1p, and a cutting process ST3 for cutting the laminated release base material paper 1p and the release coating material base paper 3p with the cutter C And laminating step ST4 for laminating and storing the adhesive transfer sheet A after cutting.

  Hereinafter, each step will be described.

  The pressure-sensitive adhesive application step ST1 is a step of printing on the strip-shaped release base paper 1p by performing processing that can apply the dot-shaped pressure-sensitive adhesive 26 having a circular shape in plan view on the surface of the drum D as described above. Specifically, by providing a coating area D21 and a non-coating area D22 on the surface of the drum D, the adhesive placement portion 21p corresponding to the adhesive placement area 21 is intermittently provided on the release base paper 1p. It is provided. A region between the adhesive placement portions 21p is defined as an adhesive retracting portion 22p.

  The multi-layer process ST2 is a process in which the strip-shaped release coating base paper 3p is similarly layered on the release base material paper 1p coated with the adhesive g.

  The cutting step ST3 is a step in which the position of the adhesive retracting portion 22p is grasped by the sensor S at the stage where the peeling covering base paper 3p is overlaid and then cut by the cutter C. Specifically, as described above, the adhesive g contains the pigment b, and the sensor S senses the pigment b so that the cutter C accurately cuts the predetermined position in the adhesive retracting portion 22p. It has become.

  The lamination step ST4 is a step of appropriately laminating the pressure-sensitive adhesive transfer sheet A that is accurately cut and manufactured by the cutter C.

  Thus, according to such a manufacturing method, the adhesive transfer sheet A which concerns on this embodiment can be manufactured suitably.

  By setting it as the above structures, the adhesive transfer sheet A which concerns on this embodiment provides the adhesive evacuation area | region 22, and is from the edge part of the peeling base material 1 or the peeling coating material 3 in the cut location. The adhesive g protrudes to the side and wraps around, so that it is possible to effectively avoid the problem that the peeling base materials 1 or the peeling base material 1 and the peeling coating material 3 are erroneously fixed. Yes. The shape of the pressure-sensitive adhesive block 25 has a circular shape in plan view, which is a bulging shape in which the peripheral edge portion is formed by a straight line or a curved line and bulges outward from the center of the shape. It is also effectively avoided that the adhesive block is suddenly transferred to the covering material 3 at the time of peeling.

  And the adhesive transfer sheet A which concerns on this embodiment avoids that a wrinkle and a bubble will be shape | molded between the peeling base material layer 1, the peeling coating material 3, and the adhesive layer 2 in the case of use. Therefore, the gap 24 is open to the side surface of the pressure-sensitive adhesive layer 2 over substantially the entire surface of the pressure-sensitive adhesive layer 2.

  And the adhesive part 23 shall have the some adhesive block 25 arrange | positioned at equal intervals, and it is the above-mentioned target object with respect to the adhesive layer 2 which makes the thickness of the adhesive layer 2 uniform. The stress at the time of pressing a machine part or the like is concentrated, and the machine part or the like is suitably fixed to another location.

  Further, in the present embodiment, a circular shape in plan view is adopted as the shape of the dot-like adhesive 26 that does not easily follow the release substrate 1 and is easily held on the release substrate 1 side when the release coating material 3 is peeled off. ing.

  In particular, in the present embodiment, by forming only the plurality of dot-shaped adhesives 26 each having a circular shape in plan view, the adhesive block 25 has, for example, a dot shape that is missing and formed from an acute-angled portion. It can be effectively avoided that the release coating material 3 is mistakenly followed and the release base material 1 is accidentally peeled off.

  On the other hand, in order to avoid a situation in which the release substrate 1 is cut by mistake at the place of the pressure-sensitive adhesive portion 23 when the release substrate 1 is cut in the manufacturing process, the pressure-sensitive adhesive g includes a dye b that can be sensitive to the sensor. Yes.

  As a preferable aspect in which the pressure-sensitive adhesive transfer sheet A can be suitably manufactured, stored and used, the release substrate 1 is formed into a rectangular shape in plan view.

  Although the embodiment of the present invention has been described above, the specific configuration of each unit is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the above-described embodiment, only the release substrate and the release coating material that are rectangular are disclosed, but the shape is not limited to a rectangle. As a modified example, as shown in FIG. 7, the peeling substrate 1 and the peeling coating material 3 may be circular in plan view. In the figure, components corresponding to the above-described embodiment are denoted by the same reference numerals, and detailed description of each part is omitted.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

The external view which concerns on one Embodiment of this invention. FIG. FIG. FIG. Same as above. The typical explanatory view concerning the embodiment. The external view which concerns on the modification of the embodiment. Explanatory drawing which concerns on the background art of this invention. Same as above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Release substrate 2 ... Adhesive layer 3 ... Release coating material 21 ... Adhesive arrangement | positioning area | region 22 ... Adhesive retraction area | region 23 ... Adhesive part 24 ... Gap part 25 ... Adhesive block 26 ... Dot-shaped adhesive A ... Adhesion Agent transfer sheet b ... Dye g ... Adhesive

Claims (7)

A plurality of pressure-sensitive adhesives that are formed into a bulging shape in which an adhesive is intermittently applied on the peeling substrate and the peripheral edge is formed by a straight line or a curve, and is bulged outward from the center. It is characterized by comprising at least a pressure-sensitive adhesive layer having a pressure-sensitive adhesive arrangement region composed of a block and a pressure-sensitive adhesive retraction region formed at the peripheral edge of the release substrate, and a release coating material capable of covering the pressure-sensitive adhesive layer. Adhesive transfer sheet. The pressure-sensitive adhesive placement region has a pressure-sensitive adhesive portion and a gap portion interposed between the pressure-sensitive adhesive portions, and opens to the side surface of the pressure-sensitive adhesive placement region over substantially the entire surface of the pressure-sensitive adhesive placement region. The pressure-sensitive adhesive transfer sheet according to claim 1, which is configured as follows.   The pressure-sensitive adhesive transfer sheet according to claim 2, wherein the pressure-sensitive adhesive part has a plurality of pressure-sensitive adhesive blocks arranged at equal intervals. The pressure-sensitive adhesive transfer sheet according to claim 3, wherein the pressure-sensitive adhesive block is formed in a circular shape in plan view. The pressure-sensitive adhesive transfer sheet according to claim 3 or 4, wherein the pressure-sensitive adhesive block is constituted only by a plurality of dot-shaped pressure-sensitive adhesives each having a circular shape in plan view. The pressure-sensitive adhesive transfer sheet according to claim 1, 2, 3, 4, or 5, wherein the pressure-sensitive adhesive contains a dye that can be sensitive to a sensor. The pressure-sensitive adhesive transfer sheet according to claim 1, 2, 3, 4, 5 or 6, wherein the release substrate is formed in a rectangular shape in plan view, and the pressure-sensitive adhesive retreat area is provided on four sides around the rectangle.

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