JP2005219255A - Fiber protruded structure transferring and forming sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fiber protruded structure transferring and forming sheet used as the sheet for manufacturing a base material having a fiber protruded structure part provided on its surface. <P>SOLUTION: In the fiber protruded structure transferring and forming sheet constituted so as to transfer and form the fiber protruded structure part to the surface of a pressure-sensitive adhesive layer, a peeling treatment layer is formed at least on one side thereof and the transfer forming fiber protruded structure part for transferring and forming the fiber protruded structure part to the surface of the pressure-sensitive adhesive layer is directly provided to the surface of the peeling treatment layer. It is preferable to directly form the transfer forming fiber protruded structure part to the surface of the peeling treatment layer at least partially. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fiber convex structure transfer forming sheet used as a sheet for producing a substrate having a fiber convex structure portion on the surface.

  When adhering an adhesive tape or sheet to various adherends, it is required to easily and firmly adhere to a predetermined position of the adherend. Therefore, the adhesive tape or sheet is temporarily fixed. In addition, it is required to have a characteristic (so-called “reworkability”) that allows re-sticking, and a characteristic that enables correction of the sticking position (sticking position correcting workability). For example, an operation of bonding a flooring material to a floor can be given as an operation for bonding to a predetermined position. In the operation of laminating the flooring material to the floor, the flooring material must be inserted, and for that purpose, after the flooring material is inserted, the flooring material must be moved a considerable distance along the floor. . In such an operation, when a pressure-sensitive adhesive tape or sheet having a pressure-sensitive adhesive layer with a normal pressure-sensitive adhesive is used, the flooring material is inserted along the floor after insertion of the flooring material for tackiness and initial adhesiveness of the pressure-sensitive adhesive. It is impossible to move. Therefore, a method using a pressure-sensitive adhesive tape or sheet whose adhesive strength has been temporarily reduced using water or an organic solvent, a water-swelling granular material of a water-absorbing polymer interposed between the surface of the pressure-sensitive adhesive layer and the adherend A method (see Patent Document 1), a method of reducing an initial adhesion area using a pressure-sensitive adhesive tape or sheet having a concavo-convex structure on the surface of the pressure-sensitive adhesive layer (see Patent Document 2), A method of controlling the initial adhesive force using an adhesive tape or sheet in which a non-adhesive substance having a shape is formed in a convex shape has been proposed (see Patent Document 3).

Japanese Patent No. 3296769 JP 2002-121503 A JP-A-7-310057

  However, for example, as described in Japanese Patent No. 3296769, water is used in a method in which a water-swelling granular material of a water-absorbing polymer is interposed between the surface of the pressure-sensitive adhesive layer and the adherend. In addition, water essentially inhibits adhesion, and it is not desirable to use it from the reliability of adhesion.

  In addition, as described in JP-A No. 2002-121503, in the method of reducing the initial adhesion area using an adhesive tape or sheet having an uneven structure on the surface of the adhesive layer, the adhesive tape or sheet Since the pressure-sensitive adhesive layer is present on the surface, the width of the position that can be corrected from the temporarily placed position is limited, and it cannot be said that the workability for correcting the applied position is sufficient.

  Furthermore, as described in JP-A-7-310057, initial adhesion using a pressure-sensitive adhesive tape or sheet in which a solid non-adhesive substance is formed in a convex shape on the surface of the pressure-sensitive adhesive layer. In the method of controlling the force, the non-adhesive substance is only bonded to the surface of the adhesive layer, and the structure of the non-adhesive substance is not controlled. Inevitably, the amount of non-adhesive substance used is inevitably increased, which is not desirable in terms of adhesive properties.

  In addition, the present inventors form a fiber convex structure portion on the surface of the pressure-sensitive adhesive layer (for example, the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape or sheet), and a base material (for example, a fiber convex structure portion on the surface (for example, A sheet having a fiber convex structure on the surface was developed. In such a base material having a fiber convex structure part, the fiber convex structure part may be partially formed on the surface of the pressure-sensitive adhesive layer, or may be formed entirely. When a substrate having a fiber convex structure portion on the surface is partially formed on the surface, the surface on which the fiber convex structure portion is formed can exhibit adhesiveness. For example, the adhesive tape or the sheet can be used for applications in which reworkability or affixing position correction workability is required, or in applications using a fiber convex structure. In addition, when formed over the entire surface, the surface on which the fiber convex structure portion is formed is an entire fiber convex structure portion, and the fiber convex structure portion formed over the entire surface is It can be used for the purpose of use.

Therefore, the objective of this invention is providing the sheet | seat for fiber convex structure transcription | transfer formation used as a sheet | seat for producing the base material which has a fiber convex structure part on the surface.
Another object of the present invention is to provide a fiber convex structure transfer sheet for use in producing an adhesive tape or sheet having excellent reworkability and sticking position correction workability.
Still another object of the present invention is to provide a fiber convex structure transfer forming sheet used in producing an adhesive tape or sheet useful as an adhesive tape or sheet for attaching a flooring material.

  As a result of intensive studies to achieve the above object, the present inventors have provided a specific structure portion with fibers on the surface of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape or sheet (pressure-sensitive adhesive layer for the pressure-sensitive adhesive tape or sheet). It has been found that when the adhesive tape or sheet is adhered to a predetermined position of the adherend, temporary fixing and reattachment can be performed, and the attachment position can be corrected. Moreover, it discovered that the said adhesive tape or sheet | seat (the adhesive tape or sheet | seat which has the specific structure part by a fiber on the adhesive layer surface) can be easily manufactured by using the sheet | seat which has a specific structure. The present invention has been completed based on these findings.

  That is, the present invention is a fiber convex structure transfer forming sheet capable of transferring and forming a fiber convex structure portion on the surface of an adhesive layer, wherein a release treatment layer is formed on at least one surface side. And a convex fiber structure for transferring and forming the convex fiber structure on the surface of the pressure-sensitive adhesive layer directly on the surface of the release treatment layer. This is a transfer forming sheet.

  The transfer-forming fiber convex structure is preferably formed directly and at least partially on the surface of the release treatment layer. In addition, the transfer-forming fiber convex structure portion is preferably formed on the surface of the release treatment layer without a pressure-sensitive adhesive layer by fiber implantation.

  As the fiber convex structure transfer forming sheet of the present invention, a recess is partially formed on the surface of the release treatment layer side, and a release treatment layer is formed in the recess, and the release treatment in the recess is performed. It is preferable to have a transfer-forming fiber convex structure portion directly on the surface of the layer.

  Moreover, as said fiber convex structure part, it is preferable that the fiber is a fiber raising part of the structure where it has stood up from the surface of the adhesive layer.

  In the present invention, it is possible to transfer and form the fiber convex structure portion on the surface of the pressure-sensitive adhesive layer so as to have a predetermined pattern shape as a whole.

  Further, the pressure-sensitive adhesive layer for forming the fiber convex structure may be a pressure-sensitive adhesive layer formed on at least one surface of the support of the pressure-sensitive adhesive tape or sheet, and the fiber convex structure is formed. The surface of the pressure-sensitive adhesive layer may be the surface of the pressure-sensitive adhesive surface on at least one surface side of the support in the double-sided pressure-sensitive adhesive tape or sheet.

  The present invention is also a method for producing the fiber convex structure transfer forming sheet, wherein a release treatment agent is applied to at least one surface of the substrate in the fiber convex structure transfer forming sheet, After forming the cured release treatment layer, using the flocking method, the surface treatment is performed directly on the surface of the uncured release treatment layer, and further, the uncured release treatment layer is cured to release the release treatment. A method for producing a fiber convex structure transfer forming sheet, comprising forming a fiber convex structure portion for transfer formation for transferring and forming a fiber convex structure portion on the surface of an adhesive layer directly on the surface of the layer. It is. In the method for producing a fiber convex structure transfer forming sheet of the present invention, for example, an uncured release treatment layer in a state where the release surface of a release liner having a hole is superimposed on the surface of an uncured release treatment layer. The fiber convex structure for transfer formation for transferring the fiber convex structure portion on the surface of the pressure-sensitive adhesive layer on the surface of the release treatment layer corresponding to the hole portion of the release liner The part can be formed.

  According to this invention, the sheet | seat for fiber convex structure transcription | transfer formation used as a sheet | seat for producing the base material which has a fiber convex structure part on the surface is obtained. According to the fiber convex structure transfer forming sheet, it is possible to produce an adhesive tape or sheet having excellent reworkability and sticking position correction workability. In particular, an adhesive tape or sheet useful as an adhesive tape or sheet for attaching a flooring material can be produced.

  The fiber convex structure transfer forming sheet of the present invention has a configuration capable of transferring and forming a fiber convex structure portion on the surface of various pressure-sensitive adhesive layers (for example, a pressure-sensitive adhesive tape or a pressure-sensitive adhesive layer of a sheet). The release treatment layer is at least partially formed on at least one surface side, and the transfer is performed to transfer and form the fiber convex structure portion directly on the surface of the release treatment layer. It has a forming fiber convex structure. That is, when the fiber convex structure transfer forming sheet of the present invention is used [specifically, by sticking and transferring the fiber convex structure transfer forming sheet to the surface of the adhesive layer], various adhesives A fiber convex structure portion can be formed on the surface of the layer.

(Fiber convex structure)
Such a fiber convex structure part is not particularly limited as long as it is a structure part that is convexly formed by fibers. For example, the fiber is an adhesive layer (for example, an adhesive tape or an adhesive layer of a sheet). Examples thereof include a fiber raised portion having a structure rising from the surface, and a fiber convex structure having a structure in which a lump of fibers is provided on the surface of the pressure-sensitive adhesive layer. The fiber convex structure portion may be composed of a single structure, or may be composed of a structure in which a plurality of structures are combined.

  In addition, one fiber convex structure part is normally comprised by the some fiber. The number and density of the fibers constituting one fiber convex structure are not particularly limited. For example, when the transfer convex fiber convex structure part is partially transferred and formed on the surface of the pressure-sensitive adhesive layer, the number and density of the fibers constituting one fiber convex structure part are the target rework property and correction of the pasting position. It can be appropriately selected according to workability, the type of adherend, and the like.

  As a fiber convex structure part, the fiber raising part which has the structure where the fiber stood up from the surface of the adhesive layer (especially adhesive layer of an adhesive tape or a sheet | seat) is preferable.

  FIG. 1 is a schematic cross-sectional view partially showing an example of a state in which a fiber convex structure transfer sheet in the present invention is bonded to the surface of an adhesive layer to transfer and form a fiber convex structure portion. 1 (a) shows a state in which the fiber convex structure transfer sheet is bonded to the surface of the adhesive tape or the pressure-sensitive adhesive layer for the sheet, and FIG. 1 (b) bonds the fiber convex structure transfer sheet. It shows a state in which it is peeled off and the fiber convex structure is transferred and formed on the surface of the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer for the sheet. In FIG. 1, 1 is a fiber convex structure transfer forming sheet, 2 is a release liner (fiber release structure transfer forming sheet release liner) in the fiber convex structure transfer forming sheet 1, and 2a is a fiber convex structure transfer. Holes in the release liner for forming sheet 2, 3 is a release treatment layer (release treatment layer for the fiber convex structure transfer forming sheet) in the fiber convex structure transfer forming sheet 1, 4 is for fiber convex structure transfer forming Substrate (sheet base material for fiber convex structure transfer formation) in sheet 1, 5 is a fiber raising portion transferred and formed on an adhesive tape or an adhesive layer for sheet, 6 is an adhesive tape or sheet, and 6 a is an adhesive tape or The pressure-sensitive adhesive layer (pressure-sensitive adhesive tape or pressure-sensitive adhesive layer for sheet) in the sheet 6, 6 a 1 is the surface of the pressure-sensitive adhesive tape or pressure-sensitive adhesive layer 6 a for the sheet, and 6 b is the substrate (pressure-sensitive adhesive tape) in the pressure-sensitive adhesive tape or sheet 6. Or sheet substrate; a simply referred to as "substrate").

  In the fiber convex structure transfer forming sheet 1, the fiber convex structure transfer forming sheet release treatment layer 3 is formed on one side of the fiber convex structure transfer forming sheet base material 4, and the fiber convex structure transfer forming is performed. On the sheet release treatment layer 3, there is laminated a fiber convex structure transfer sheet release liner 2 having a hole 2 a and having both surfaces as release surfaces, for fiber convex structure transfer formation. A fiber raised portion 5 for transferring and forming the adhesive tape or the adhesive layer 6a for the sheet is formed on the surface of the release treatment layer 3 for the fiber convex structure transfer forming sheet in the hole 2a in the release liner 2 for the sheet. ing. On the other hand, the pressure-sensitive adhesive tape or sheet 6 has a pressure-sensitive adhesive tape or sheet adhesive layer 6a formed on one side of a pressure-sensitive adhesive tape or sheet substrate 6b as a support. Then, as shown in FIG. 1 (a), by sticking the fiber convex structure transfer forming sheet 1 to the adhesive tape or the sheet 6 (particularly, by pressing after bonding), the fiber raised portion 5 can be transferred to the surface 6a1 of the pressure-sensitive adhesive tape or pressure-sensitive adhesive layer 6a for the sheet.

  As shown in FIG. 1 (b), when the fiber convex structure transfer forming sheet 1 is peeled from the adhesive tape or sheet 6, the fiber raising portion 5 as shown in FIG. An adhesive tape or sheet transferred to the surface 6a1 of the sheet pressure-sensitive adhesive layer 6a is obtained.

  FIG. 2 is a schematic plan view of the pressure-sensitive adhesive tape or sheet on which the fiber raised portions 5 of FIG. 1 are transferred and viewed from above. In FIG. 2, 5, 6, 6a and 6a1 are the same as described above.

In addition, in FIG. 1, the said fiber raising part 5 is provided in the shape which forms a some line as a whole, as FIG. 2 shows, and the space | interval (center part of each line) of each line is provided. The interval) is 10 mm, and the interval between the fiber raised portions included in one line (the interval between the center portions of the fiber raised portions) is 10 mm. The shape of one fiber raising portion on the surface of the pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer is a substantially circular shape (area is about 0.8 mm ² ) with a radius of about 0.5 mm. Further, the adjacent lines have a configuration in which each fiber raised portion in the other line is formed in a portion located in the central portion between each fiber raised portion in one line.

  FIG. 3 is a schematic cross-sectional view partially showing another example of a state in which the fiber convex structure portion is transferred and formed by laminating the fiber convex structure transfer forming sheet of the present invention on the surface of the pressure-sensitive adhesive layer. FIG. 3 (a) shows a state in which the fiber convex structure transfer forming sheet is bonded to the surface of the adhesive tape or the adhesive layer for the sheet, and FIG. 3 (b) is for fiber convex structure transfer forming. It shows a state where the sheet is peeled off after being bonded and the fiber convex structure is transferred and formed on the surface of the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer for the sheet. In FIG. 3, 11 is a fiber convex structure transfer forming sheet, 31 is a release treatment layer (fiber release structure transfer forming sheet release treatment layer) in the fiber convex structure transfer formation sheet 11, and 41 is a fiber convex shape. Base material (base material for fiber convex structure transfer forming sheet) in the structure transfer forming sheet 11, 51 is a fiber raising portion transferred and formed on the adhesive tape or the adhesive layer for sheet, 61 is an adhesive tape or sheet, 61 a Is an adhesive layer (adhesive tape or sheet adhesive layer) in the adhesive tape or sheet 61, 61a1 is the surface of the adhesive tape or sheet adhesive layer 61a, 61b is a base material (adhesive tape or sheet in the adhesive tape or sheet 61) Base material).

  In the fiber convex structure transfer forming sheet 11, the fiber convex structure transfer forming sheet release treatment layer 31 is formed on one side of the fiber convex structure transfer forming sheet substrate 41, and the fiber convex structure transfer forming sheet 11 is formed. On the entire surface of the sheet release treatment layer 31, a fiber raised portion 51 for transfer formation to the adhesive tape or the sheet adhesive layer 61a is formed. On the other hand, the pressure-sensitive adhesive tape or sheet 61 has a pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer 61a formed on one surface of a pressure-sensitive adhesive tape or sheet substrate 61b as a support. Then, as shown in FIG. 3 (a), the fiber raised structure portion is formed by bonding the fiber convex structure transfer forming sheet 11 to the adhesive tape or the sheet 61 (particularly, by bonding after bonding). 51 can be transferred to the surface 61a1 of the pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer 61a.

  As shown in FIG. 3B, when the fiber convex structure transfer forming sheet 11 is peeled off from the adhesive tape or sheet 61, the fiber raising portion 51 becomes the surface of the adhesive tape or sheet adhesive layer 61a. A pressure-sensitive adhesive tape or sheet that is entirely transferred to 61a1 is obtained.

  As described above, the transfer-forming fiber convex structure portion for transferring and forming the fiber convex structure portion (particularly, the fiber raising portion) on the surface of the pressure-sensitive adhesive layer is entirely formed on the surface of the release treatment layer. Or may be partially formed. In addition, the said peeling process layer is at least partially formed in the at least one surface side. That is, the release treatment layer may be formed entirely or partially on at least one surface side. When the release treatment layer is formed entirely on one surface side, and the transfer-forming fiber convex structure is formed on the entire surface of the release treatment layer, the adhesive layer surface has The fiber convex structure can be transferred and formed on the entire surface. On the other hand, the release treatment layer is formed entirely on one surface side, and the transfer-forming fiber convex structure portion is partially formed on the surface of the release treatment layer, or the release treatment layer Is formed partially on one surface side, and the convex structure for transfer formation is formed on the entire surface or part of the surface of the release treatment layer. Can partially transfer and project the fiber convex structure. When the fiber convex structure is formed on the entire surface of the pressure-sensitive adhesive layer, the surface of the pressure-sensitive adhesive layer is not exposed. In some cases, it is referred to as a “reactive substrate”. In addition, the surface in which the fiber convex structure part in the fiber surface non-adhesive base material is not formed may be an adhesive surface. In this case, the fiber surface non-adhesive property having adhesiveness on the back side. It can be used as a substrate.

  On the other hand, when the fiber convex structure is partially formed on the surface of the pressure-sensitive adhesive layer, the surface of the pressure-sensitive adhesive layer can be partially exposed. (Sometimes referred to as “fiber surface adhesive substrate”). In addition, in FIG. 1, the said fiber raising part 5 is provided in the shape which forms a some line as a whole. Thus, in the fiber surface adhesive base material obtained using the fiber convex structure transfer forming sheet of the present invention, the fiber convex structure parts such as the fiber raised parts form a plurality of lines as a whole. It may be provided in various shapes.

  In the present invention, as the fiber convex structure portion, for example, the pressure-sensitive adhesive layer is a pressure-sensitive adhesive layer for a tape or sheet as shown below, and the fiber convex structure portion is a pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer. When partially formed on the surface of the agent layer, the adhesive tape or sheet can be temporarily adhered to the adherend, and thereafter, it can be firmly adhered to the adherend by pressure bonding. It is preferable.

  As a structure of such a fiber raising part, for example, (1) One end part of one fiber is bonded and fixed to the adhesive layer surface, and the other end part is not fixed (free. In a state where the fibers stand up in a substantially I shape from the surface of the pressure-sensitive adhesive layer (structure shown in FIGS. 1 and 3), and (2) the central portion of one fiber is the pressure-sensitive adhesive layer A structure in which fibers are erected in a substantially V-shape from the surface of the pressure-sensitive adhesive layer in a state where both ends of the fibers are not fixed (free), (3) one fiber Both ends are bonded and fixed to the surface of the pressure-sensitive adhesive layer, and the fiber stands upside down in a substantially U-shape from the surface of the pressure-sensitive adhesive layer in a state where the center portion of the fiber is not fixed (free). In addition to the structure, a structure in which the fibers stand up from the surface of the pressure-sensitive adhesive layer in a shape such as a substantially W shape, a substantially M shape, a substantially N shape, or a substantially O shape, Raniwa, these structures, and the like combined structure. As the structure of the fiber raising portion, the structure of (1) (a structure in which fibers stand up in a substantially I shape from the surface of the pressure-sensitive adhesive layer) is preferable. Of course, the fiber raised portion may be in a state where the fiber is erected in a straight line shape such as I-shaped from the surface of the pressure-sensitive adhesive layer, in a state having a jagged shape, a wavy shape, a loop shape, etc. It may be in an upright state as a whole.

  When the fiber convex structure part is partially provided on the surface of the pressure-sensitive adhesive layer, the overall shape thereof is not particularly limited, and may have a predetermined pattern shape.

  Using the fiber convex structure transfer forming sheet of the present invention, a substrate having a pressure-sensitive adhesive layer having a fiber convex structure portion transferred on the surface thereof, and a pressure-sensitive adhesive layer surface on which the fiber convex structure portion is formed As described above, the fiber convex structure part is partially formed in the pressure-sensitive adhesive layer when using as a base material having adhesiveness (fiber surface adhesive base material). This is very important. In such a case, it is preferable that the fiber convex structure part is partially formed in a pattern shape on the surface of the pressure-sensitive adhesive layer. For example, when the fiber convex structure portion is formed in a pattern shape as shown in FIG. 2 as a whole, that is, the fiber convex structure portion as a whole forms a plurality of lines. When provided, the interval between the lines is not particularly limited, but is selected from a range of, for example, about 1 to 100 mm (preferably 3 to 50 mm, more preferably 5 to 40 mm) from the viewpoint of adhesiveness and the like. Can do. Moreover, although the space | interval in particular between each fiber convex-shaped structure part contained in one line is not restrict | limited, From viewpoints, such as adhesiveness, it is 1-100 mm (preferably 3-50 mm, More preferably, 5-40 mm, for example. ) Can be selected from a range of degrees. Furthermore, the positional relationship between the fiber convex structures in adjacent lines is not particularly limited, and may be a positional relationship that is a lattice shape as a whole, or a positional relationship that is an indefinite shape as a whole. Good.

  In addition, when the fiber convex-shaped structure part is partially formed in the adhesive layer surface, it does not restrict | limit especially as a shape in the adhesive layer surface about one fiber convex-shaped structure part, For example, substantially circular shape Or a substantially polygonal shape or an indefinite shape. In addition, the number of fiber convex structures to be transferred and formed on the surface of the pressure-sensitive adhesive layer is not particularly limited.

  Moreover, when the fiber convex structure part is partially formed on the surface of the pressure-sensitive adhesive layer, the entire area of the portion where the fiber convex structure part is transferred and formed on the pressure-sensitive adhesive layer surface (the area of the whole fiber convex structure part) ) Is not particularly limited, but from the viewpoint of tackiness and the like, for example, 0.001 to 20% (preferably 0.005 to 15%, more preferably 0.01 to 0.1% with respect to the total surface area of the pressure-sensitive adhesive layer) It is desirable that the area has a ratio of 10%). If the area on the pressure-sensitive adhesive layer surface of all fiber convex structures is less than 0.001% with respect to the total surface area of the pressure-sensitive adhesive layer, the effect of reducing the initial adhesive strength is reduced, and reworkability and pasting position correction work are reduced. Sex is reduced. On the other hand, if the area of the entire fiber convex structure portion on the surface of the pressure-sensitive adhesive layer exceeds 20% with respect to the total surface area of the pressure-sensitive adhesive layer, the reworkability and workability for correcting the attachment position are improved. Adhesive strength of the material to the adherend is reduced.

Further, as the area of each fiber convex structure section is not particularly limited, for example, 0.1 to 10 mm ² (preferably 0.3 to 5 mm ^2, more preferably 0.5 to 3 mm ²⁾ within the range of from about Although it is preferable to select, it may be less than 0.1 mm ^2, may exceed 10 mm ^2.

Furthermore, for example, when a plurality of fiber convex structure portions are transferred and formed such that the area of each fiber convex structure portion on the pressure-sensitive adhesive layer surface is 0.1 to 10 mm ² , each fiber convex structure portion The shortest interval between them may be, for example, about 1 to 100 mm (preferably 3 to 50 mm, more preferably 5 to 40 mm).

  In addition, as an area in the adhesive layer surface of a fiber convex structure part, it can be set as the area of the part enclosed by the fiber convex structure part.

  The fiber constituting such a fiber convex structure is not particularly limited, and may be any of natural fiber, semi-synthetic fiber, and synthetic fiber. More specifically, examples of the fiber include cotton fiber, rayon fiber, polyamide fiber [aliphatic polyamide fiber, aromatic polyamide fiber (so-called aramid fiber), etc.], polyester fiber (trade name “Tetron”, etc.). Polyacrylonitrile fiber, carbon fiber (carbon fiber), acrylic fiber, polyvinyl alcohol fiber (so-called vinylon fiber), polyethylene fiber, polyimide fiber, and fluorine resin fiber. As the fiber, cotton fiber, rayon fiber, polyamide fiber, and polyester fiber are suitable.

  Only one type of fiber may be used, or two or more types of fibers may be used in combination.

  As such a fiber, a short fiber can be suitably used. When the length of the fiber becomes long, the surface on which the fiber convex structure portion is formed is preferable because the adhesive force to the adherend of the substrate (fiber surface adhesive substrate) having adhesiveness is reduced. Absent. The length of the fiber is desirably about 0.1 to 5 mm (preferably 0.3 to 5 mm, more preferably 0.3 to 2 mm). If the length of the fiber is too short, it is difficult to manufacture and expensive, which is not preferable from the viewpoint of cost. Also, when used as a fiber surface adhesive base material, if the fiber length is too short, the pressure applied when the adhesive layer is adhered to the adherend may be low, so that the reworkability and sticking position can be reduced. This is not preferable because the correction workability is lowered.

  The thickness of the fiber is not particularly limited, but can be selected, for example, from a range of about 0.1 to 30 denier (preferably 0.5 to 20 denier, more preferably 1 to 16 denier). If the thickness of the fiber is too large, the pressure applied when the pressure-sensitive adhesive layer is adhered to the adherend is increased due to a decrease in flexibility, which is not preferable. On the other hand, if the thickness of the fiber is too thin, the effect of reducing the initial adhesive strength is lowered, and the reworkability and the workability for correcting the attachment position are lowered.

(Fiber convex structure transfer sheet)
The fiber convex structure transfer forming sheet has a structure in which the fiber convex structure portion is transferred by bonding to the surface of the pressure-sensitive adhesive layer, and a release treatment layer is formed on at least one surface side. It has a fiber forming structure for transfer formation for transferring and forming a fiber protruding structure on the surface of the pressure-sensitive adhesive layer directly on the surface of the release treatment layer. That is, in the fiber convex structure transfer-forming sheet of the present invention, it is important that the transfer-forming fiber convex structure portion is formed on the surface of the release treatment layer without an adhesive layer. The release treatment layer can be formed at least partially on at least one surface side. The transfer-forming fiber convex structure can be formed directly and at least partially on the surface of the release treatment layer.

  The transfer-forming fiber convex structure has a structure corresponding to the fiber convex structure. Of course, the type, length, thickness, and the like of the fibers in the transfer-forming fiber convex structure are the same as those of the fiber convex structure. In addition, as a method for forming a fiber convex structure portion for transfer formation (particularly, a fiber raising portion for transfer formation) on the fiber convex structure transfer formation sheet, although not particularly limited, as shown below, A flocking method (particularly an electrostatic flocking method) can be suitably used. As the electrostatic flocking processing method, any of an up method, a down method, and a side method may be used.

  As such a fiber convex structure transfer forming sheet, (i) it has a transfer convex fiber convex structure portion on the entire surface of the release treatment layer formed entirely on one surface side. (Ii) a structure in which the transfer convex fiber convex structure part is partially provided on the surface of the release treatment layer formed entirely on one surface side. (Iii) Fiber convex structure for transfer formation at least partially (entirely or partially) on the surface of the release treatment layer partially formed on one surface side For example, a sheet for forming a fiber convex structure having a portion may be used. As described above, in the present invention, since the transfer-forming fiber convex structure is directly formed on the surface of the release treatment layer, the transfer-forming fiber convex structure is easily transferred to the pressure-sensitive adhesive layer. be able to. In the fiber convex structure transfer forming sheet having the configuration (i), the transfer convex fiber convex structure portion is entirely formed on at least one surface side, and the above (ii) and (iii) In the fiber convex structure transfer forming sheet having the configuration of (), the transfer convex fiber convex structure portion is partially formed on at least one surface side.

  The fiber convex structure transfer forming sheet is transferred entirely to the surface of the fiber convex structure transfer forming sheet having the configuration (i) (that is, the entire surface of the release treatment layer formed on one surface side). In the case of a fiber convex structure transfer forming sheet having a structure having a forming fiber convex structure portion), as the fiber convex structure transfer forming sheet, (1a) a release treatment layer is used as a support. A fiber having a structure in which the entire surface is formed on both surfaces of the base material, and the surface of the release treatment layer on the at least one surface side of the base material has a transfer-forming fiber convex structure portion on the entire surface. A convex structure transfer forming sheet, (1b) a release treatment layer is formed entirely on one side of a base material as a support, and the transfer formation fiber projection is entirely formed on the surface of the release treatment layer. Examples include a fiber convex structure transfer forming sheet having a structure portion.In addition, when the sheet | seat for fiber convex structure transfer formation has such a structure, the sheet | seat for fiber convex structure transcription | transfer formation of the structure of said (1a) is for transfer formation entirely on both surfaces or one side. When it has a fiber convex structure part and has the fiber convex structure part for transfer formation only on one surface, the other surface is a release treatment layer surface (peel surface). Further, the fiber convex structure transfer forming sheet having the configuration (1b) has the fiber convex structure portion for transfer formation entirely on only one side, and the other side is the surface of the substrate or another layer. It can be the surface of (such as an adhesive layer).

  On the other hand, the fiber convex structure transfer forming sheet is partially formed on the surface of the fiber convex structure transfer forming sheet having the structure (ii) (that is, the surface of the release layer formed entirely on one surface side). (2a) The release treatment layer is supported by the fiber convex structure transfer forming sheet as a fiber convex structure transfer forming sheet having a structure having a transfer convex fiber convex structure portion. A structure that is formed entirely on both surfaces of a base material as a body, and that has a partially protruding fiber convex structure for transfer formation on the surface of the release treatment layer on at least one side of the base material (2b) A release treatment layer is formed entirely on one side of a base material as a support, and the transfer formation fiber is partially formed on the surface of the release treatment layer. Example of fiber convex structure transfer forming sheet with a convex structure Kill. In addition, when the sheet | seat for fiber convex structure transfer formation has such a structure, the sheet | seat for fiber convex structure transfer formation of the structure of said (2a) is for transfer formation partially on both surfaces or one side. The surface on which the fiber convex structure portion for transfer formation can be partially formed, and the surface of the release treatment layer is partially exposed on the surface on which the fiber convex structure portion for transfer formation is partially formed. The surface on which no part is formed is the entire surface of the release treatment layer (release surface). Further, the fiber convex structure transfer forming sheet having the configuration (2b) has a transfer convex fiber convex structure partly only on one side, and the other side is the substrate surface or another layer. (Such as an adhesive layer).

  Further, the fiber convex structure transfer forming sheet has at least a portion on the surface of the fiber convex structure transfer forming sheet having the configuration (iii) (that is, the surface of the release layer partially formed on one surface side). In the case of a fiber convex structure transfer forming sheet having a structure having a transfer convex fiber convex structure portion), as the fiber convex structure transfer forming sheet, (3a) The substrate is partially formed on both surfaces of the substrate as a support, and the surface of the release treatment layer on at least one surface side of the substrate has a convex or convex structure for transfer formation on the entire surface or partially. The fiber-convex structure transfer-forming sheet having the structure as described above, (3b) the release treatment layer is partially formed on one side of the substrate as a support, and the surface of the release treatment layer is entirely or Convex convex partly having a convex convex part for transfer formation And which may or may not be structural transfer forming sheet. In addition, when the sheet | seat for fiber convex structure transfer formation has such a structure, the sheet | seat for fiber convex structure transfer formation of the structure of said (3a) is for transfer formation partially on both surfaces or one side. The surface on which the fiber convex structure portion for transfer formation can be partially formed, and the surface of the release treatment layer is partially exposed on the surface on which the fiber convex structure portion for transfer formation is partially formed. The surface on which no part is formed is the entire surface of the release treatment layer (release surface). Further, the fiber convex structure transfer forming sheet having the structure (3b) has a transfer convex fiber convex structure partly only on one side, and the other side is the substrate surface or another layer. (Such as an adhesive layer).

  In the present invention, as the fiber convex structure transfer forming sheet having the constitution (ii) or (iii), a concave portion is partially formed on the surface on the release treatment layer side, and the release treatment layer is formed in the recess. The fiber convex structure transfer forming sheet having a structure having the transfer convex fiber convex structure portion directly on the surface of the release treatment layer in the concave portion can be suitably used. Specifically, (a) as shown in FIG. 4 (a), a base material, a release treatment layer formed at least partially on the base material, and both surfaces are release surfaces and holes. And a fiber convex structure transfer forming sheet having a structure in which the transfer convex fiber convex structure is formed in the hole of the release liner and on the surface of the release treatment layer ("" 4 (b), as shown in FIG. 4 (b), a base material having a concavo-convex structure, and a recess in the base material. It is formed by a release treatment layer formed on the bottom surface and / or wall surface and a release surface (release treatment layer, etc.) formed on the convex portion of the base material, and the transfer-formed fiber convex structure portion is based on Fiber convex structure transfer type with a configuration formed in the concave portion of the material and on the surface of the release treatment layer Use sheet (sometimes referred to as "fiber convex structure transfer sheet for forming (b)"), and the like.

  FIG. 4 is a schematic cross-sectional view showing an example of the fiber convex structure transfer forming sheet of the present invention. In FIG. 4 (a), 7 is a fiber convex structure transfer forming sheet [fiber convex structure transfer forming sheet (a)], 7a is a release liner whose both surfaces are release surfaces and has holes, and 7a1 is a release liner. A hole portion in the liner 7a, 7b is a release treatment layer, 7c is a base material, and 7d is a fiber raising portion for transferring and forming the adhesive layer. The fiber convex structure transfer forming sheet 7 has the same configuration as the fiber convex structure transfer forming sheet 1 shown in FIG. Specifically, the fiber convex structure transfer forming sheet 7 has a release treatment layer 7b entirely formed on one side of a base material 7c, and both sides are release surfaces on the release treatment layer 7b, and a hole portion. A release liner 7a having 2a is laminated, and a fiber raising portion 7d for transfer formation to the pressure-sensitive adhesive layer is formed on the surface of the release treatment layer 7b in the hole 7a1 of the release liner 7a.

  Further, in FIG. 4B, 71 is a fiber convex structure transfer forming sheet [fiber convex structure transfer forming sheet (b)], 71a is a substrate having an uneven structure, and 71a1 is a substrate having an uneven structure. 71a is a convex portion of 71a2, a concave portion of the base material 71a having a concave-convex structure, 71b is a release treatment layer formed on the surface of the convex portion 71a1 of the base material 71a having a concave-convex structure, and 71c is a base material 71a having a concave-convex structure. A release treatment layer 71d formed on the bottom surface of the recess 71a2 is a fiber raising portion for transferring and forming the adhesive layer. In the fiber convex structure transfer forming sheet 71, a peeling treatment layer 71b is formed on the convex portion 71a1 of the base material 71a having a concave-convex structure, and a peeling treatment layer 71c is formed on the bottom surface of the concave portion 71a2. On the surface of the release treatment layer 71c in 71a2, a fiber raised portion 71d for transfer formation to the pressure-sensitive adhesive layer is formed.

  Specifically, the fiber convex structure transfer sheet (a) having the configuration (a) is formed of a base material (for fiber convex structure transfer formation) as shown in FIG. 1 or FIG. 4 (a). Sheet base material), release treatment layer (transfer convex fiber convex structure holding release treatment layer), release liner having a hole (fiber convex structure transfer release sheet release liner), and fiber convex shape And a transfer-forming fiber convex structure portion formed in the hole portion of the structure-transfer forming sheet release liner and on the surface of the transfer-forming fiber convex structure portion holding release treatment layer. In such a fiber convex structure transfer forming sheet (a), the fiber convex structure transfer forming sheet base material is a plastic substrate such as a plastic film or sheet; a metal such as a metal foil or a metal plate. Base materials: paper base materials such as paper (quality paper, Japanese paper, kraft paper, glassine paper, synthetic paper, top coat paper, etc.); fiber base materials such as cloth, non-woven fabric and net; rubber systems such as rubber sheets Substrate: An appropriate thin leaf body such as a foamed body such as a foamed sheet can be used. The fiber convex structure transfer sheet base material may have a single layer form or a laminated form. For example, as a fiber convex structure transfer sheet base material, a plastic base material and another base material (paper base material, etc.) formed into a multilayer by laminating or coextrusion (2-3) Layer composite) or the like.

  As a base material for a fiber convex structure transfer forming sheet, a plastic film or sheet is preferable. Examples of such a plastic film or sheet material (plastic material) include α-polyethylene (PE), polypropylene (PP), ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), and the like. Olefin resins containing olefin as a monomer component; polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT); polyvinyl chloride (PVC); vinyl acetate resin; polyphenylene sulfide ( PPS); amide resins such as polyamide (nylon) and wholly aromatic polyamide (aramid); polyimide resins; polyether ether ketone (PEEK) and the like. The plastic material may be used alone, or may be used in a mixed state in which two or more kinds are combined. The plastic film or sheet may be an unstretched type or a stretched type subjected to a uniaxial or biaxial stretching process.

  In addition, the fiber convex structure transfer forming sheet base material includes an inorganic filler (for example, titanium oxide, zinc oxide, etc.), an anti-aging agent (for example, an amine-based anti-aging agent, a quinoline-based anti-aging agent) as necessary. Antioxidants, hydroquinone-based anti-aging agents, phenol-based anti-aging agents, phosphorus-based anti-aging agents, phosphite-based anti-aging agents, etc.), antioxidants, UV absorbers (eg salicylic acid derivatives, benzophenone UV absorbers) , Benzotriazole ultraviolet absorbers, hindered amine ultraviolet absorbers, etc.), lubricants, plasticizers, colorants (for example, pigments, dyes, etc.), and the like.

  The surface (one side or both sides) of the fiber convex structure transfer forming sheet substrate is subjected to appropriate surface treatment such as physical treatment such as corona treatment or plasma treatment, and chemical treatment such as a primer. Also good.

  As thickness of the base material for fiber convex structure transfer formation sheets, it can select from the range of about 10-300 micrometers, for example, Preferably it is about 30-200 micrometers.

  Moreover, in the said fiber convex structure transfer formation sheet (a), as a fiber convex structure part holding | maintenance peeling process layer for transfer formation, it can comprise with a well-known peeling processing agent. The release treatment agent is not particularly limited, and for example, a silicone release treatment agent, a fluorine release treatment agent, a long chain alkyl release treatment agent, and the like can be used. The release treatment agents can be used alone or in combination of two or more.

  As the release treatment agent, a silicone release treatment agent is suitable from the viewpoint of releasability and cost. The silicone release treatment agent can be appropriately selected from known polysiloxane release treatment agents (silicone release treatment agents) having a polysiloxane polymer as a main component. As the silicone release treatment agent, among them, an addition reaction type polysiloxane release treatment agent can be suitably used. The addition reaction type polysiloxane-based release treatment agent can be cured by addition reaction type crosslinking (curing reaction) to form a peelable film, and can exhibit useful release characteristics.

  The addition reaction type polysiloxane-based release treatment agent includes a group having reactivity with a group having a Si—H bond (specifically, an alkenyl group such as a vinyl group or a hexenyl group). A polysiloxane polymer having two or more “groups having reactivity with a group having a Si—H bond” may be simply referred to as an “alkenyl group”) and a molecule; Polysiloxane polymer having 2 or more hydrogen atoms bonded to silicon atoms (particularly, polysiloxane polymer having 2 or more silicon atoms having Si-H bonds in the molecule) Can be used. The “Si—H bond” means “a bond between a silicon atom (Si) and a hydrogen atom (H)”.

  In addition, in the polysiloxane polymer having two or more alkenyl groups, examples of the polysiloxane polymer forming the main chain or skeleton include polydimethylsiloxane polymer, polydiethylsiloxane polymer, polymethyl Polyalkylalkylsiloxane polymers such as ethylsiloxane-based polymers, polyalkylarylsiloxane-based polymers, and copolymers in which a plurality of silicon atom-containing monomer components are used [for example, poly (dimethylsiloxane-diethylsiloxane), etc. And the like, and polydimethylsiloxane polymers are preferred.

  On the other hand, in a polysiloxane polymer having two or more silicon atoms having Si-H bonds in the molecule, the silicon atoms having Si-H bonds include silicon atoms in the main chain and silicon in the side chain. Any of the atoms may be included, that is, it may be included as a constituent unit of the main chain, or may be included as a constituent unit of the side chain. Note that the number of Si-H bond silicon atoms (silicon atoms to which hydrogen atoms are bonded) is not particularly limited as long as it is two or more.

  As a polysiloxane polymer having two or more silicon atoms having Si—H bonds in the molecule, “—Si (R) (H) O—” (R is a hydrocarbon group) as a monomer unit in the molecule. ) Is preferable, and polydimethylhydrogensiloxane polymers [for example, poly (dimethylsiloxane-methylsiloxane) and the like] are preferable.

  In the polysiloxane release treatment agent, a polysiloxane polymer having two or more silicon atoms having Si—H bonds in the molecule has a function as a crosslinking agent.

  The amount of the polysiloxane polymer having two or more Si-H bonded silicon atoms in the molecule is not particularly limited. For example, the polysiloxane polymer having two or more Si-H bonded silicon atoms in the molecule is used. The number of moles of silicon atoms of the Si—H bond in the polymer (sometimes referred to as “number of moles (X)”) and the number of moles of alkenyl groups in the polysiloxane polymer having two or more alkenyl groups (“number of moles ( Y) ”may be referred to as the ratio of mole number (X)> number of moles (Y), but the number of moles (X) / number of moles (Y) is 0.8 to 3.0 ( You may select from the range of the ratio used as about 1.1-1.8) preferably.

  When curing a polysiloxane polymer having two or more alkenyl groups in the molecule with a polysiloxane polymer (crosslinking agent) having two or more silicon atoms having Si-H bonds in the molecule A catalyst can be used as the catalyst, and as the catalyst, a platinum-based catalyst (for example, platinum-based compounds such as platinum fine particles, chloroplatinic acid, or a derivative thereof) can be preferably used. The amount of the catalyst used is not particularly limited. For example, the catalyst may be selected from a range of 0.1 to 1000 ppm (preferably 1 to 100 ppm) based on a polysiloxane polymer having two or more alkenyl groups in the molecule. it can.

  In the fiber-formed structural part holding release treatment layer for transfer formation in the present invention, as the polysiloxane release agent, a polydimethylsiloxane polymer having two or more vinyl groups as alkenyl groups in the molecule, and molecules A polydimethylsiloxane release agent comprising a polydimethylhydrogensiloxane polymer having at least two “—Si (R) (H) O—” (R is a hydrocarbon group) as a monomer unit therein Can be used.

  The polysiloxane-based release treating agent has the above-described constituent components (for example, a polydimethylsiloxane-based polymer having two or more alkenyl groups in the molecule, and two or more silicon atoms having Si—H bonds in the molecule). Can be prepared by mixing an organic solvent as required. The polysiloxane release treatment agent can be used in a state where a polymer component such as a polysiloxane polymer is dissolved in an organic solvent. The polysiloxane release treatment agent contains known or conventional additives (for example, fillers, antistatic agents, antioxidants, ultraviolet absorbers, plasticizers, colorants (dyes, pigments, etc.)). May be.

  As such a polysiloxane release agent, for example, trade name “TPR6600” (manufactured by GE Toshiba Silicone), trade name “KS-778” (manufactured by Shin-Etsu Chemical Co., Ltd.) and the like are commercially available.

  The transfer-forming fiber convex structure holding release treatment layer is applied to a predetermined surface (at least one surface) of the fiber convex structure transfer-forming sheet base material, followed by drying, curing reaction, etc. It can be formed through the heating step. In the heating step for drying, curing reaction, etc., a known or conventional heating method (for example, a method using a hot air dryer) can be used. The addition reaction type polysiloxane release treatment agent is applied to a predetermined surface of the fiber convex structure transfer sheet base material and then subjected to an addition reaction type curing reaction in a drying step or a curing reaction step. And a peelable film can be formed.

Moreover, it is important to apply the release treatment agent in an appropriate application amount. If the coating amount of the release treatment agent is too small, the peeling force (force required for peeling) may increase, causing problems in practical use, and it may not be possible to hold the fibers to be planted. . On the other hand, if the amount is too large, the cost is increased, which is economically disadvantageous, and the fibers are difficult to migrate to the pressure-sensitive adhesive layer. As the release treatment agent, for example, it is used at a coating amount (solid content) of 0.01 to 5 g / m ² (preferably 0.05 to ³ g / m ² , more preferably 0.2 to 1 g / m ² ). Can do.

  The thickness of the transfer convex fiber convex structure holding release treatment layer is not particularly limited, and can be selected, for example, from a range of about 1 to 100 μm (preferably 10 to 50 μm).

  Furthermore, in the fiber convex structure transfer forming sheet (a), as the release liner for the fiber convex structure transfer forming sheet, in FIGS. In the present invention, it is possible to use a release liner that has a hole and has only one release surface. That is, as the release liner for a fiber convex structure transfer forming sheet, a release liner having a hole and at least one surface being a release surface can be used. As the release liner for the fiber convex structure transfer forming sheet, when only one side is the release surface, the release surface is transferred depending on the method of using the fiber convex structure transfer forming sheet (a). It may be used so as to be on the side of the forming fiber convex structure holding and peeling treatment layer side, or may be used on the side (outside) to be bonded to the pressure-sensitive adhesive layer. In addition, when the release liner for the fiber convex structure transfer forming sheet having both surfaces as release surfaces is used, the transfer convex fiber convex structure portion is provided on the transfer convex fiber convex structure portion holding release treatment layer. After the formation, the release liner for the fiber convex structure transfer forming sheet is peeled off from the transfer forming fiber convex structure holding release treatment layer, and then the transfer convex fiber convex structure is transferred to the adhesive layer. Alternatively, after forming the transfer-forming fiber convex structure portion on the transfer-forming fiber convex structure holding release treatment layer, the transfer-forming fiber convex structure portion is transferred and formed on the adhesive layer. Further, the release liner for the fiber convex structure transfer forming sheet may be peeled off from the fiber convex structure holding release treatment layer for transfer formation, and further, transfer formed on the fiber convex structure holding release treatment layer for transfer formation. After forming the fiber convex structure for The 維凸 like structure transfer sheet for forming itself and fiber convex structure transfer forming a release liner sheet, may be utilized as a release liner for pressure-sensitive adhesive layer. On the other hand, when the release liner for a fiber convex structure transfer forming sheet, one side of which is a release surface, is used so that the side (outside) to be bonded to the adhesive layer is the release surface, After forming the transfer-forming fiber convex structure portion on the shape-structure-holding release treatment layer, the transfer-forming fiber convex structure portion is transferred to the pressure-sensitive adhesive layer, and then the fiber-convex structure transfer forming sheet or fiber The release liner for the convex structure transfer forming sheet may be peeled off from the fiber forming structure holding and peeling treatment layer for transfer forming, and the fiber convex for transfer forming may be formed on the fiber forming structure holding and peeling treatment layer for transfer forming. After forming the shape structure portion, the fiber convex structure transfer forming sheet itself or the fiber convex structure transfer forming sheet release liner may be used as a release liner for the pressure-sensitive adhesive layer. In addition, when the release liner for a fiber convex structure transfer forming sheet, one side of which is a release surface, is used so that the side (outside) to be bonded to the adhesive layer does not become the release surface, After forming the convex fiber structure for transfer formation on the layered structure holding release treatment layer, after peeling the release liner for the fiber convex structure transfer forming sheet from the fiber convex structure holding release treatment layer for transfer The convex structure for transfer formation can be transferred to the pressure-sensitive adhesive layer.

  More specifically, as a release liner for a fiber convex structure transfer forming sheet, for example, a base material (a release liner base material for transfer forming sheet) having a release treatment layer with a release treatment agent on at least one surface. Other fluoropolymers (eg, polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, tetrafluoroethylene / hexafluoropropylene copolymer, chlorofluoroethylene / vinylidene fluoride copolymer, etc.) Or a low-adhesive substrate made of a nonpolar polymer (for example, an olefinic resin such as polyethylene or polypropylene) can be used.

  As the release liner for the fiber convex structure transfer forming sheet, for example, a release liner in which a release treatment layer is formed on at least one surface of the transfer liner forming release liner substrate can be suitably used. As such a release liner base material for transfer forming sheet, polyester film (polyethylene terephthalate film, etc.), olefin resin film (polyethylene film, polypropylene film, etc.), polyvinyl chloride film, polyimide film, polyamide film (nylon film) ) And other plastic-based substrate films (synthetic resin films) and papers (quality paper, Japanese paper, craft paper, glassine paper, synthetic paper, top coat paper, etc.) Multilayered (2-3 layer composite) and the like can be mentioned.

  On the other hand, the release treatment agent constituting the release treatment layer is not particularly limited, and the release treatment agent constituting the transfer convex fiber convex structure holding release treatment layer in the fiber convex structure transfer formation sheet (a). Examples of release treatment agents (for example, silicone release treatment agents, fluorine release treatment agents, long-chain alkyl release treatment agents, etc.) can be used. The release treatment agents can be used alone or in combination of two or more. As the release treatment agent, as in the case of the release treatment agent for the transfer convex fiber convex structure holding release treatment layer in the fiber convex structure transfer formation sheet (a), from the viewpoint of releasability and cost, a silicone type A release treatment agent is preferable, and among them, the above-described addition reaction type polysiloxane release treatment agent can be preferably used.

  The release treatment layer can be formed by applying a release treatment agent to a predetermined surface (at least one surface) of the release liner base material for transfer forming sheet and then performing a heating process for drying, curing reaction, and the like. In the heating step for drying, curing reaction, etc., a known or conventional heating method (for example, a method using a hot air dryer) can be used. The addition reaction type polysiloxane release treatment agent is applied to a predetermined surface of the release liner substrate for transfer forming sheet and then subjected to an addition reaction type curing reaction in a drying step or a curing reaction step. By forming the peelable film, excellent peel characteristics can be exhibited.

Moreover, it is important to apply the release treatment agent in an appropriate application amount. If the coating amount of the release treatment agent is too small, the peeling force (force required for peeling) becomes large and causes a practical problem. On the other hand, if it is too much, the cost becomes high and it is economically disadvantageous. The appropriate coating amount (solid content) of the release treatment agent can be selected as appropriate, and is, for example, 0.01 to 5 g / m ² (preferably 0.05 to ³ g / m ² , more preferably 0.00). 2-1 g / m ² ).

  The thickness of the release liner for the fiber convex structure transfer forming sheet, the thickness of the release liner base material for the transfer forming sheet, the thickness of the release treatment layer, etc. are not particularly limited. It can be appropriately selected depending on the shape and the like.

  Particularly, in the fiber convex structure transfer forming sheet (a), the transfer forming fiber convex structure portion is formed in the hole of the release liner and on the surface of the transfer forming fiber convex structure holding release treatment layer. Therefore, as a release liner for a sheet of fiber convex structure transfer forming sheet, in order to protect the fibers of the fiber convex structure portion for transfer formation from falling down, at least the thickness of the outer peripheral area of the hole is for transfer forming. It is preferable that the height is equal to or higher than the height of the fiber convex structure.

  In addition, as a method of forming the hole of the release liner for the fiber convex structure transfer forming sheet, for example, a well-known or conventional hole forming machine [in particular, various shapes of convex structure (projection structure), Drilling method using a punching machine having a concave structure opposite to the convex structure], and a punching method using heat or light (eg, thermal head, halogen lamp, xenon lamp, flash lamp, laser beam, etc.) Method) and a molding method using a mold (for example, a mold having a convex portion).

  In addition, in the release liner for the fiber convex structure transfer forming sheet, the part for forming the hole is a part corresponding to the fiber convex structure part to be partially transferred to the surface of the adhesive tape or the pressure-sensitive adhesive layer for the sheet. It is important to be.

  As described above, the fiber convex structure transfer forming sheet (a) has the fiber forming structure portion for transfer formation in the hole of the release liner for the fiber convex structure transfer forming sheet and the fiber for transfer forming. It is formed on the surface of the convex structure holding and peeling layer. As described above, the transfer-forming fiber convex structure portion has a structure corresponding to the fiber convex structure portion, and its composition (fiber type, length, thickness, etc.) It is the same as the convex structure portion.

  The transfer convex fiber convex structure portion is formed on the surface of the transfer convex fiber convex structure holding release treatment layer in the hole of the release liner for the convex fiber structure transfer forming sheet by using, for example, a flocking method. Can be formed. In addition, it is desirable to perform the flocking process after applying the release treatment and before curing. That is, it is important to perform flocking on the uncured release layer.

  As such a flocking method, an electrostatic flocking method is particularly suitable. As an electrostatic flocking method, for example, a flocked object having an adhesive layer is set to be a counter electrode with respect to one electrode, a DC high voltage is applied to this, and a gap between the electrodes is applied. There is a processing method for flocking by supplying flocks (fibers), causing the flocks to fly along the lines of electric force by Coulomb force, and hitting the surface of the object to be transplanted (the surface of the adhesive layer). Can be mentioned. Such an electrostatic flocking method is not particularly limited as long as it is a known electrostatic flocking method. For example, in “Fiber” Vol. 34, No. 6 (1982-6) Any of the up method, the down method, and the side method as described in "."

  Specifically, the fiber convex structure transfer forming sheet substrate, the uncured transfer convex fiber convex structure holding release treatment layer, and the fiber convex structure transfer forming sheet release liner (holes) The release liner having an adhesive layer) was subjected to flocking processing (particularly electrostatic flocking processing) on the surface of the uncured transfer convex fiber convex structure holding release treatment layer of the laminate laminated in this order. Thereafter, the uncured transfer convex fiber convex structure holding release treatment layer is dried or cured to be cured, so that the fiber convex structure transfer forming sheet release liner corresponding to the hole portion of the release liner is formed. The transfer-forming fiber convex structure portion can be formed on the surface of the cured transfer-forming fiber convex structure portion holding release treatment layer.

  In addition, as a release liner for a fiber convex structure transfer forming sheet, a part corresponding to a fiber convex structure part to be partially transferred and formed on the surface of an adhesive layer (for example, an adhesive tape or an adhesive layer for a sheet) It is important to use a release liner having holes.

  Thus, when the fiber convex structure transfer forming sheet (a) is used as the fiber convex structure transfer forming sheet, the position of forming the hole of the fiber convex structure transfer forming sheet release liner, Depending on the size and number of the holes, the position of the fiber convex structure portion on the pressure-sensitive adhesive layer surface and the size and number of the fiber convex structure portion can be controlled.

  On the other hand, as shown in FIG. 4 (b), the fiber convex structure transfer sheet (b) having the above configuration (b) has a concavo-convex structure (irregularity-containing fiber convex structure transfer formation). Sheet-forming base material), and the convex-concave portion-containing fiber convex structure transfer-forming sheet base material, the transfer-forming fiber convex structure-holding release layer formed on the bottom surface and / or the wall surface of the concave-convex portion-containing sheet, The peeling surface (such as the surface of the release treatment layer) formed on the convex part of the substrate for a convex-concave portion-containing fiber convex structure transfer forming sheet and the concave portion of the convex-concave part-containing fiber convex-structure transfer sheet base material And a transfer-forming fiber convex structure portion formed on the surface of the transfer-forming fiber convex structure holding release treatment layer.

  In such a fiber convex structure transfer forming sheet (b), the substrate for an uneven portion-containing fiber convex structure transfer forming sheet is not particularly limited as long as it is a substrate having an uneven structure (uneven portion). As the base material for the convex-concave portion-containing fiber convex structure transfer forming sheet, a thin leaf body (plastic type) similar to the convex base-structure transfer sheet base material in the fibrous convex structure transfer-forming sheet (a) Appropriate thin leaf bodies such as a base material, a metal base material, a paper base material, a fiber base material, a rubber base material, and a foamed body) can be used. The substrate for an uneven part-containing fiber convex structure transfer forming sheet may have a single layer form or a laminated form. For example, as a base material for a convex-concave-contained fiber convex structure transfer forming sheet, a plastic base material and other base materials (paper base materials, etc.) are multilayered by lamination or coextrusion ( 2 to 3 layer composites).

  As a base material constituting the base material for a convex-concave portion-containing fiber convex structure transfer forming sheet, similarly to the base material for a fiber convex structure transfer forming sheet in the fiber convex structure transfer forming sheet (a), A plastic film or sheet is preferable, and the same material can be suitably used as a plastic film or sheet material (plastic material).

  In addition, as the base material for convex-concave structure transfer formation sheets in the convex-concave structure transfer formation sheet (a), the concave-convex portion-containing fiber convex-structure transfer sheet base material, if necessary, Various additives such as inorganic fillers, anti-aging agents, antioxidants, ultraviolet absorbers, lubricants, plasticizers, and coloring agents may be blended.

  In addition, in the base material for uneven | corrugated | grooved part containing fiber convex structure transfer formation sheet, on the surface similarly to the base material for fiber convex structure transfer formation sheet in the fiber convex structure transfer formation sheet (a), An appropriate surface treatment such as a physical treatment such as corona treatment or plasma treatment, or a chemical treatment such as a primer may be applied.

  In the base material for a convex-concave portion-containing fiber convex structure transfer forming sheet, the thickness of the convex portion can be selected from a range of, for example, about 10 to 300 μm, preferably about 30 to 200 μm.

  Moreover, in the uneven | corrugated | grooved part containing fiber convex structure transfer formation sheet base material, it does not restrict | limit especially as a depth of a recessed part, According to the shape of the fiber convex structure part for transfer formation, etc., it can select suitably. . The depth of the concave portion is preferably about the same as or higher than the height of the transfer-forming fiber convex structure portion so as to protect the fibers of the transfer-forming fiber convex structure portion from falling down.

  The method for forming the concavo-convex portion of the concavo-convex-containing fiber convex structure transfer forming sheet base material is not particularly limited. In addition, as a base material for uneven | corrugated | grooved part containing fiber convex structure transfer formation sheets, it has the uneven | corrugated | grooved part obtained by forming a recessed part in the base material which has a smooth surface which does not have an uneven | corrugated | grooved part. A substrate can be used. Therefore, for example, a method of forming a recess using a known or conventional recess forming machine on the same substrate as the fiber convex structure transfer forming sheet substrate in the fiber convex structure transfer forming sheet (a). , A method of forming a recess by heat or light (for example, a method of forming a recess by a thermal head, a halogen lamp, a xenon lamp, a flash lamp, a laser beam, etc.) or a mold (for example, a mold having a protrusion). By forming a concave portion in a predetermined part of the surface by a method such as molding processing, an uneven portion-containing fiber convex structure transfer forming sheet base material can be produced.

  In addition, in the base material for an uneven part-containing fiber convex structure transfer forming sheet, the part forming the concave part is a part corresponding to the fiber convex structure part that is partially transferred and formed on the pressure-sensitive adhesive layer surface. is important.

  Moreover, in the said fiber convex structure transfer formation sheet (b), the peeling process layer formed in the bottom face and / or wall surface of the recessed part of the uneven | corrugated part containing fiber convex structure transfer forming sheet base material, or an uneven part containing As a release treatment agent constituting a release treatment layer such as a release treatment layer as a release surface formed on a convex portion of a fiber convex structure transfer forming sheet substrate, the fiber convex structure transfer formation sheet (a The release treatment agent exemplified in the release treatment agent or the like constituting the convex structure holding holding release treatment layer for transfer formation (for example, silicone release treatment agent, fluorine release treatment agent, long chain alkyl release treatment) Agent). The release treatment agents can be used alone or in combination of two or more. As the release treatment agent, the release treatment agent for the transfer convex fiber convex structure portion holding release treatment layer in the fiber convex structure transfer formation sheet (a) or the release treatment of the release liner for the fiber convex structure transfer formation sheet. As in the case of the release treatment agent that constitutes the layer, a silicone release treatment agent is suitable from the viewpoint of releasability and cost, and in particular, the above addition reaction type polysiloxane release treatment agent is used. It can be used suitably.

  In addition, the formation method of a peeling process layer, the application quantity of a peeling process agent, etc. are the same as that of the case of the sheet | seat for fiber convex structure transfer formation (a). For example, the release treatment layer can be formed by a method in which a release treatment agent is applied to the recesses and protrusions of the concavo-convex portion-containing fiber convex structure transfer forming sheet base, or the entire surface.

It is important to apply the release treatment agent in an appropriate amount. If the coating amount of the release treatment agent used in the concave portion of the substrate for a convex-concave portion-containing fiber convex structure transfer forming sheet is too small, the peeling force (the force required for peeling) may increase and cause practical problems. In some cases, the fibers to be planted may not be retained. On the other hand, if the amount is too large, the cost is increased, which is economically disadvantageous, and the fibers are difficult to migrate to the pressure-sensitive adhesive layer. As the release treatment agent, for example, it is used at a coating amount (solid content) of 0.01 to 5 g / m ² (preferably 0.05 to ³ g / m ² , more preferably 0.2 to 1 g / m ² ). Can do.

Further, the appropriate coating amount (solid content) of the release treatment agent used in the convex portions of the base material for the convex-concave portion-containing fiber convex structure transfer forming sheet can be appropriately selected as described above. , 0.01~5g / m ² (preferably 0.05 to 3 g / m ^2, more preferably 0.2~1g / m ²⁾ is. In the case where a material having a peeling treatment function (for example, a material of a low-adhesive base material such as low-density polyethylene) is used for the base material for an uneven part-containing fiber convex structure transfer forming sheet itself. In some cases, it is not necessary to form a release treatment layer on the convex portions of the base material for a convex-concave portion-containing fiber convex structure transfer forming sheet.

  As described above, the fiber convex structure transfer forming sheet (b) has the transfer convex fiber convex structure portion transferred within the concave portion of the concave-convex portion-containing fiber convex structure transfer base sheet. It is formed on the surface of the forming fiber convex structure holding and peeling layer. The transfer-forming fiber convex structure portion uses, for example, a flocking processing method (particularly, electrostatic flocking processing method), similarly to the transfer-forming fiber convex structure portion in the fiber convex structure transfer forming sheet (a). Can be formed. In addition, as in the case of the fiber convex structure transfer forming sheet (a), the flocking process is desirably performed after the release treatment agent is applied and before curing. That is, it is important to perform flocking on the uncured release layer.

  Specifically, for example, it has a concavo-convex part, and has a concavo-convex part in which the uncured transfer convex fiber convex structure part peeling treatment layer is formed on the bottom surface and / or wall surface (particularly the bottom surface) of the concave part. After the fiber convex structure transfer forming sheet base material is subjected to flocking processing (particularly electrostatic flocking processing) on the surface of the uncured transfer convex fiber convex structure holding and peeling treatment layer in the recess, By carrying out drying or curing treatment of the cured convex-form fiber-like structure holding release treatment layer for transfer formation and curing it, the concave-convex-part-containing fiber convex-structure transfer-forming sheet base material is used for transfer formation. The fiber convex structure portion for transfer formation can be formed on the surface portion of the fiber convex structure holding / peeling treatment layer. Under the present circumstances, the convex part in the uneven | corrugated | grooved part containing fiber convex structure transcription | transfer sheet | seat base material may become a peeling surface (hardened peeling process layer) previously, and the uncured peeling process layer is formed. It may be. In addition, when flocking to the surface of the uncured transfer convex fiber convex structure holding release treatment layer in the concave portion, the convex portion of the concave / convex portion-containing fiber convex structure transfer forming sheet base material is in an uncured state. When the release treatment layer is formed, the uneven part-containing fiber convex structure transfer sheet base material is laminated with a release liner having a hole in a portion corresponding to the concave part, and the convex part The uncured release treatment layer formed on the surface may be protected by a release liner.

  Thus, when using the said fiber convex structure transfer formation sheet (b) as a fiber convex structure transfer formation sheet, the position which forms the recessed part of the uneven | corrugated | grooved part containing fiber convex structure transfer sheet base material Alternatively, the position and position of the fiber convex structure portion on the surface of the pressure-sensitive adhesive layer and the size and number of the fiber convex structure portion can be controlled by the size and number of the concave portions.

  In the present invention, after forming the fiber convex structure portion on the pressure-sensitive adhesive layer surface using the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (b), The fiber convex structure transfer forming sheet (a) and the fiber convex structure transfer forming sheet (b) may be peeled off, but as described above, they can be used as they are as a release liner.

  In addition, in the said fiber convex structure transfer formation sheet (a) and the said fiber convex structure transfer formation sheet (b), since the fiber convex structure part is formed in a recessed part, a fiber convex structure part As described above, the fiber raising portion in which the fibers are raised can be easily formed. Accordingly, when the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (b) is used as the fiber convex structure transfer forming sheet, the fibers are easily raised. It can be transferred to the pressure-sensitive adhesive layer surface in a state. Therefore, the raised fibers can be effectively transferred and formed on the surface of the pressure-sensitive adhesive layer, and the adhesive force of the pressure-sensitive adhesive layer can be controlled with a smaller amount of fibers.

(Base material for transferring and forming fiber convex structure)
Such a fiber convex structure transfer forming sheet can transfer and form a fiber convex structure portion on the surface of the pressure-sensitive adhesive layer. The substrate for transferring and forming the fiber convex structure portion by the fiber convex structure transfer forming sheet (sometimes referred to as “transfer forming material of the fiber convex structure portion”) may have an adhesive layer. There is no particular limitation, and for example, it may be a transfer forming material of a fiber convex structure portion constituted only by the pressure-sensitive adhesive layer alone, and the pressure-sensitive adhesive layer is constituted by those formed on various base materials or supports. It may be a transfer forming material for the fiber convex structure. The substrate or support on which the pressure-sensitive adhesive layer in the transfer forming material of the fiber convex structure is formed is not particularly limited, and for example, may have various forms, but has a sheet-like form. It is preferable. That is, an adhesive tape or sheet can be suitably used as the transfer forming material for the fiber convex structure portion. As such an adhesive tape or sheet, an adhesive tape or sheet in which an adhesive layer (adhesive tape or adhesive layer for sheet) is formed on at least one surface of the support can be used. Specifically, as an adhesive tape or sheet, (1) With an adhesive tape or an adhesive layer for sheet formed on both sides of a substrate (adhesive tape or sheet substrate) as a support Type double-sided pressure-sensitive adhesive tape or sheet, (2) pressure-sensitive adhesive tape or sheet with a base material in which a pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer is formed on one side of a base material for pressure-sensitive adhesive tape or sheet as a support (single-sided Adhesive tape or sheet), (3) Double-sided adhesive tape of substrate-less type in which both sides of the adhesive layer for the adhesive tape or sheet are protected by one or two release liners (adhesive tape or release liner for sheet) A sheet etc. can be illustrated. Thus, the pressure-sensitive adhesive tape or sheet may have the form of a pressure-sensitive adhesive tape or sheet in which only one surface is a pressure-sensitive adhesive surface, and has the form of a pressure-sensitive adhesive tape or sheet in which both surfaces are pressure-sensitive adhesive surfaces. It may be. Moreover, in the case of a double-sided pressure-sensitive adhesive tape or sheet, the fiber convex structure portion may be formed only on one side of the pressure-sensitive adhesive surface, or the fiber convex structure portion may be formed on both sides of the pressure-sensitive adhesive surface.

  Furthermore, the pressure-sensitive adhesive tape or sheet may be a pressure-sensitive adhesive tape (rolled body or roll) wound in a roll shape, or may be a pressure-sensitive adhesive sheet in the form of a single layer or a laminated sheet.

(Adhesive layer for adhesive tape or sheet)
The pressure-sensitive adhesive constituting the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer for the sheet is not particularly limited, and examples thereof include rubber-based pressure-sensitive adhesives, acrylic pressure-sensitive adhesives, polyester-based pressure-sensitive adhesives, urethane-based pressure-sensitive adhesives, polyamide-based pressure-sensitive adhesives, and epoxy-based pressure-sensitive adhesives. Known pressure-sensitive adhesives such as pressure-sensitive adhesives, vinyl alkyl ether pressure-sensitive adhesives, silicone pressure-sensitive adhesives, and fluorine-based pressure-sensitive adhesives can be used. Further, the adhesive may be a hot melt adhesive. An adhesive can be used individually or in combination of 2 or more types. The pressure-sensitive adhesive may be any type of pressure-sensitive adhesive such as an emulsion-based pressure-sensitive adhesive, a solvent-based pressure-sensitive adhesive, an oligomer-based pressure-sensitive adhesive, and a solid pressure-sensitive adhesive.

  In addition to the polymer component such as an adhesive component (base polymer), the adhesive is a crosslinking agent (for example, a polyisocyanate-based crosslinking agent, an alkyl etherified melamine compound-based crosslinking agent, etc.) depending on the type of the adhesive. ), Tackifiers (for example, rosin derivative resins, polyterpene resins, petroleum resins, phenol resins, etc.), plasticizers, fillers, anti-aging agents, and other suitable additives may be included. When the pressure-sensitive adhesive is cross-linked when forming the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer for the sheet, a heat-crosslinking method by heating, a UV-crosslinking method by UV irradiation (UV cross-linking method), an electron beam cross-linking method by electron beam irradiation (EB cross-linking) Method) and any of natural curing methods that cure naturally at room temperature or the like.

  Adhesives include natural rubber and various synthetic rubbers (eg polyisoprene rubber, styrene / butadiene rubber, styrene / isoprene / styrene block copolymer rubber, styrene / butadiene / styrene block copolymer rubber, recycled rubber, butyl rubber) , Polyisobutylene, etc.) based rubber-based adhesive; acrylic polymer (homopolymer or copolymer) using one or more (meth) acrylic acid alkyl esters as monomer components An acrylic pressure-sensitive adhesive having a base polymer can be preferably used.

Examples of the (meth) acrylic acid alkyl ester in the acrylic pressure-sensitive adhesive include, for example, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, (meth ) Butyl acrylate, isobutyl (meth) acrylate, s-butyl (meth) acrylate, t-butyl (meth) acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, heptyl (meth) acrylate , Octyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl (meth) acrylate, nonyl (meth) acrylate, isononyl (meth) acrylate, decyl (meth) acrylate, (meth) acrylic acid Isodecyl, undecyl (meth) acrylate, dodecyl (meth) acrylate, (Meth) acrylic acid tridecyl, (meth) acrylic acid tetradecyl, (meth) acrylic acid pentadecyl, (meth) acrylic acid hexadecyl, (meth) acrylic acid heptadecyl, (meth) acrylic acid octadecyl, (meth) acrylic acid nonadecyl, (meta And (meth) acrylic acid C _1-20 alkyl ester such as eicosyl acrylate [preferably (meth) acrylic acid C _4-18 alkyl (linear or branched alkyl) ester]. The (meth) acrylic acid alkyl ester can be appropriately selected according to the intended tackiness and the like. The (meth) acrylic acid alkyl ester can be used alone or in combination of two or more.

  Moreover, in the said acrylic adhesive, even if the (meth) acrylic-acid alkylester and the other monomer (copolymerizable monomer) copolymerizable with the said (meth) acrylic-acid alkylester as needed are used together Good. Examples of such copolymerizable monomers include (meth) acrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, isocrotonic acid and other carboxyl group-containing monomers or anhydrides thereof; sodium vinyl sulfonate, etc. Sulfonic acid group-containing monomers of styrene; aromatic vinyl compounds such as styrene and substituted styrene; cyano group-containing monomers such as acrylonitrile; olefins such as ethylene, propylene and butadiene; vinyl esters such as vinyl acetate; Amide group-containing monomers such as acrylamide, methacrylamide, N-vinylpyrrolidone, N, N-dimethyl (meth) acrylamide; hydroxyl group-containing monomers such as hydroxyalkyl (meth) acrylate and glycerol dimethacrylate; ) Aminoethyl acrylate, (meth) a Amino group-containing monomers such as liloylmorpholine; Imido group-containing monomers such as cyclohexylmaleimide and isopropylmaleimide; Epoxy group-containing monomers such as glycidyl (meth) acrylate and methyl glycidyl (meth) acrylate; 2 -Isocyanate group-containing monomers such as methacryloyloxyethyl isocyanate. Examples of the copolymerizable monomer include triethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, ethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, and neopentyl glycol di Multifunctional such as (meth) acrylate, 1,6-hexanediol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, divinylbenzene And a copolymerizable monomer (polyfunctional monomer). A copolymerizable monomer can be used individually or in combination of 2 or more types.

  As a method for forming the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer for the sheet, a known or conventional forming method can be adopted. For example, in the case of a pressure-sensitive adhesive tape or sheet with a base material having a pressure-sensitive adhesive tape or a base material for the sheet A method of applying an adhesive on a pressure-sensitive adhesive tape or sheet substrate as a support (application method), and applying a pressure-sensitive adhesive on a release film such as a release liner to form an adhesive layer for the pressure-sensitive adhesive tape or sheet Examples thereof include a method (transfer method) of transferring the pressure-sensitive adhesive tape or sheet adhesive layer onto the pressure-sensitive adhesive tape or sheet substrate after the formation. In addition, in the case of a substrate-less pressure-sensitive adhesive tape or sheet that does not have a pressure-sensitive adhesive tape or sheet substrate, as a method for forming the pressure-sensitive adhesive tape or sheet adhesive layer, the pressure-sensitive adhesive tape or sheet release liner as a support is used. Examples include a method (application method) of applying a pressure-sensitive adhesive on the release surface.

  The thickness of the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer for a sheet is not particularly limited, and can be selected, for example, from a range of about 1 to 1000 μm (preferably 10 to 500 μm).

  In the case of the pressure-sensitive adhesive layer for the pressure-sensitive adhesive tape or sheet, in the case of the pressure-sensitive adhesive layer in the double-coated pressure-sensitive adhesive tape or sheet with a base material, at least one pressure-sensitive adhesive layer is a fiber-convex structure transfer forming sheet by the fiber-convex structure transfer forming sheet In the case of the pressure-sensitive adhesive layer in a single-sided pressure-sensitive adhesive tape or sheet with a base material or the pressure-sensitive adhesive layer in a base-less type double-sided pressure-sensitive adhesive tape or sheet, the pressure-sensitive adhesive layer is It is used as an adhesive layer for transferring and forming the fiber convex structure portion by the fiber convex structure transfer forming sheet.

(Adhesive tape or sheet support)
As a support (support that supports the pressure-sensitive adhesive layer) on which the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer for the sheet is formed, the pressure-sensitive adhesive tape or sheet is a pressure-sensitive adhesive in which one side or both sides of the substrate-attached type is a pressure-sensitive adhesive layer. In the case of a tape or a sheet, an adhesive tape or a substrate for a sheet can be used. On the other hand, in the case of a substrate-less type double-sided adhesive tape or a sheet, an adhesive tape or a release liner (separator) for a sheet can be used. In addition, in the case where the adhesive tape or sheet is an adhesive tape or sheet in which one side or both sides of the substrate type is an adhesive tape or an adhesive layer for a sheet, one side of the adhesive tape or the substrate for the sheet as a support or A pressure-sensitive adhesive layer for a pressure-sensitive adhesive tape or sheet is formed on both sides, and the surface of the pressure-sensitive adhesive layer for a pressure-sensitive adhesive tape or sheet is a release surface on the back side of the substrate for pressure-sensitive adhesive tape or sheet, or a pressure-sensitive adhesive tape or sheet. It may be protected by a liner. When such a pressure-sensitive adhesive tape or release liner for sheet is laminated on the surface of the pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer for forming the fiber convex structure, the surface of the pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer is fiber convex. When the structure portion is formed, it can be peeled off and removed.

  On the other hand, when the pressure-sensitive adhesive tape or sheet is a substrate-less double-sided pressure-sensitive adhesive tape or sheet, the pressure-sensitive adhesive tape or sheet release liner serves as a support for the pressure-sensitive adhesive tape or sheet adhesive layer, The pressure-sensitive adhesive tape or sheet release liner supports the pressure-sensitive adhesive layer for the pressure-sensitive adhesive tape or sheet and protects the surface of the pressure-sensitive adhesive layer until the pressure-sensitive adhesive tape or sheet is used. In the case where the pressure-sensitive adhesive tape or sheet release liner is laminated on the surface of the pressure-sensitive adhesive tape or sheet adhesive layer for forming the fiber convex structure, the fiber convex structure is formed on the surface of the pressure-sensitive adhesive tape or sheet adhesive layer. When forming the part, it may be peeled off and removed.

(Adhesive tape or sheet substrate)
Examples of the adhesive tape or sheet base material include plastic base materials such as plastic films and sheets; metal base materials such as metal foils and metal plates; paper (quality paper, Japanese paper, kraft paper, glassine paper, Paper base materials such as synthetic paper, top coat paper, etc .; fiber base materials such as cloth, non-woven fabric, and net; rubber base materials such as rubber sheets; and appropriate thin leaves such as foams such as foam sheets be able to. The pressure-sensitive adhesive tape or sheet substrate may have a single-layer form or a laminated form. For example, as a base material for adhesive tape or sheet, a plastic base material and another base material (paper base material, etc.) formed into a multi-layer by laminating or coextrusion (a composite of 2 to 3 layers) Or the like.

  As the adhesive tape or the substrate for the sheet, a plastic film or sheet is preferable. Examples of such a plastic film or sheet material (plastic material) include α-polyethylene (PE), polypropylene (PP), ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), and the like. Olefin resins containing olefin as a monomer component; polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT); polyvinyl chloride (PVC); vinyl acetate resin; polyphenylene sulfide ( PPS); amide resins such as polyamide (nylon) and wholly aromatic polyamide (aramid); polyimide resins; polyether ether ketone (PEEK) and the like. The plastic material may be used alone, or may be used in a mixed state in which two or more kinds are combined. The plastic film or sheet may be an unstretched type or a stretched type subjected to a uniaxial or biaxial stretching process.

  In addition, the adhesive tape or the base material for the sheet is optionally provided with an inorganic filler (for example, titanium oxide, zinc oxide, etc.), an anti-aging agent (for example, an amine-based anti-aging agent, a quinoline-based anti-aging agent, hydroquinone). Anti-aging agents, phenol-based anti-aging agents, phosphorus-based anti-aging agents, phosphite-based anti-aging agents, etc.), antioxidants, UV absorbers (eg salicylic acid derivatives, benzophenone UV absorbers, benzotriazoles) Various additives such as a UV absorber, a hindered amine UV absorber, etc.), a lubricant, a plasticizer, and a colorant (for example, pigment, dye, etc.) may be blended.

  On one or both sides of the adhesive tape or base material for the sheet, for the purpose of improving the adhesion with the adhesive layer for the adhesive tape or sheet, physical treatment such as corona treatment or plasma treatment, chemicals such as primer An appropriate surface treatment such as a treatment may be performed.

  The thickness of the pressure-sensitive adhesive tape or sheet substrate can be selected, for example, from a range of about 10 to 300 μm, preferably about 30 to 200 μm.

(Peeling tape or sheet release liner)
Examples of the pressure-sensitive adhesive tape or sheet release liner include, in addition to a substrate having a release treatment layer formed on a release treatment agent on at least one surface, a fluorine-based polymer (eg, polytetrafluoroethylene, polychlorotrifluoroethylene, polyfluoride). Low adhesive substrates made of vinyl fluoride, polyvinylidene fluoride, tetrafluoroethylene / hexafluoropropylene copolymer, chlorofluoroethylene / vinylidene fluoride copolymer, etc., and nonpolar polymers (eg, polyethylene, polypropylene, etc.) A low-adhesive base material made of an olefin resin or the like can be used.

  As the pressure-sensitive adhesive tape or sheet release liner, for example, a release liner in which a release treatment layer is formed on at least one surface of the release liner base material can be suitably used. As such a release liner substrate, synthesis of polyester film (polyethylene terephthalate film, etc.), olefin resin film (polyethylene film, polypropylene film, etc.), polyvinyl chloride film, polyimide film, polyamide film (nylon film), etc. In addition to resin films and papers (quality paper, Japanese paper, kraft paper, glassine paper, synthetic paper, topcoat paper, etc.), these are multilayered by laminating or coextrusion (2-3 layers) Complex).

  On the other hand, the release treatment agent constituting the release treatment layer is not particularly limited, and the release treatment agent constituting the transfer convex fiber convex structure holding release treatment layer in the fiber convex structure transfer formation sheet (a). The release treatment agents exemplified in the above (for example, silicone release treatment agents, fluorine release treatment agents, long-chain alkyl release treatment agents, etc.) can be used. The release treatment agents can be used alone or in combination of two or more. As the release treatment agent, as in the case of the fiber convex structure transfer forming sheet (a), the fiber convex structure transfer formation sheet (b), etc., from the viewpoint of peelability and cost, a silicone release treatment agent Among them, the above-described addition reaction type polysiloxane release agent can be preferably used.

It is important to apply the release treatment agent (particularly, the addition reaction type polysiloxane release treatment agent) in an appropriate amount. If the coating amount of the release treatment agent is too small, the peeling force (force required for peeling) becomes large and causes a practical problem. On the other hand, if it is too much, the cost becomes high and it is economically disadvantageous. The appropriate coating amount (solid content) of the release treatment agent can be appropriately selected according to the type of pressure-sensitive adhesive to be used, and is, for example, 0.01 to 5 g / m ² (preferably 0.05 to ³ g). / M ² , more preferably 0.2 to 1 g / m ² ).

  In the pressure-sensitive adhesive tape or sheet release liner, the thickness thereof, the thickness of the release liner substrate, the thickness of the release treatment layer, and the like are not particularly limited.

(Base material having fiber convex structure on the surface)
When the fiber convex structure transfer forming sheet of the present invention is used, at least partially (entirely or partially) on the surface of the adhesive layer of the transfer convex material (for example, an adhesive tape or sheet) of the fiber convex structure portion. In fact) the fiber convex structure can be formed by transfer. The base material having a fiber convex structure part (for example, an adhesive tape or sheet having a fiber convex structure part) obtained by such transfer formation is at least partially fiber convex on the surface of the pressure-sensitive adhesive layer. Since it has a structure part, it can be used for the use using this fiber convex structure part. For example, a base material having a fiber convex structure part in which the fiber convex structure part is entirely formed on the surface of the pressure-sensitive adhesive layer exhibits an adhesive property on the surface on which the fiber convex structure part is formed. Since it cannot be used, it can be used in applications using fiber convex structures regardless of adhesiveness. For example, it can be used as a decorative material for furniture, a cushion material, a protective material, a release material, and the like.

  On the other hand, the base material having the fiber convex structure part in which the fiber convex structure part is partially formed on the surface of the pressure-sensitive adhesive layer exhibits the adhesiveness on the surface on which the fiber convex structure part is formed. Therefore, it can be used in applications using adhesiveness, applications using fiber convex structures, and applications using adhesive and fiber convex structures. For example, in applications using adhesiveness, when the surface on which the fiber convex structure is formed is bonded to the adherend under a small load, temporary bonding can be performed, and re-bonding can be performed. In addition, since it can be firmly bonded by applying a large load after correcting the sticking position, it can be used in applications where reworkability or sticking position correction workability is required for the adhesive tape or sheet.

  In addition, when performing temporary bonding in this way, the magnitude of the load applied during temporary bonding is not particularly limited, and the height of the fiber convex structure portion, the thickness of the fiber of the fiber convex structure portion, and the material It can be controlled by the type of the. That is, the adhesive force immediately after the adhesive tape or sheet is attached can be controlled to a desired size by the fiber convex structure.

  The fiber convex structure transfer forming sheet is formed from the fiber convex structure portion transfer forming material after the fiber convex structure portion is formed on the fiber convex structure portion transfer forming material (particularly, an adhesive tape or sheet). Although it may be peeled off, it is preferably used as it is as a release liner as described above. When the fiber convex structure transfer forming sheet is peeled off after forming the fiber convex structure portion, the surface on which the fiber convex structure portion of the pressure-sensitive adhesive layer is formed is a release having a recess. You may protect by a liner (especially the peeling liner which has a recessed part in the site | part corresponding to the fiber convex-shaped structure part of the surface of an adhesive layer).

  Thus, the base material (particularly, the pressure-sensitive adhesive tape having the fiber convex structure portion or the fiber convex structure portion obtained by transferring and forming the fiber convex structure portion using the fiber convex structure transfer forming sheet) As a sheet), for example, when a fiber convex structure is partially formed on the surface of the pressure-sensitive adhesive layer, as described above, after being superimposed on the adherend, temporary bonding is performed by applying a small load. In addition, after temporary bonding, re-bonding and correction of the bonding position can be performed sufficiently and easily, so that the base material having the fiber convex structure portion (in particular, the fiber convex structure portion is The adhesive tape or sheet) has excellent reworkability and adhesion position correction workability when adhering the adherend.

  Accordingly, as a base material having a fiber convex structure part, for example, an adhesive tape or sheet having a fiber convex structure part is used for adhesives that are required to be re-applied or corrected for a pasting position after temporary adhesion. It can be suitably used as a tape or sheet, and is particularly useful as an adhesive tape or sheet (adhesive tape or sheet for attaching a flooring material) used when a flooring material is bonded to a floor. In addition, when used as a pressure-sensitive adhesive tape or sheet for flooring material sticking, as the pressure-sensitive adhesive tape or sheet having a fiber convex structure, it has a pressure-sensitive adhesive tape or a pressure-sensitive adhesive layer for the sheet on both sides of the pressure-sensitive adhesive tape or sheet base material, And a double-sided pressure-sensitive adhesive tape or sheet with a substrate having a fiber convex structure partly on the surface of the pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer on one side of the pressure-sensitive adhesive tape or sheet substrate [i.e. A pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer (fibre-convex structure-forming pressure-sensitive adhesive layer) partially having a fiber convex structure portion on the surface is formed on one surface of the pressure-sensitive adhesive tape or sheet base material, and the pressure-sensitive adhesive tape Or with the base material on which the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer for sheets (fiber convex structure non-forming pressure-sensitive adhesive layer) that does not have a fiber convex structure portion on the surface is formed on the other surface of the sheet base material Of type It is possible to use a surface adhesive tape or sheet] Preferably, as the pressure-sensitive adhesive tape or sheet for forming the fiber convex structure section can be suitably used a double-sided pressure-sensitive adhesive tape or sheet of base material-containing type.

In addition, as a method of bonding a flooring material to a floor using an adhesive tape or sheet having a fiber convex structure portion, a method of bonding a flooring material to a floor via an adhesive tape or sheet having a fiber convex structure portion If it is, it will not restrict | limit in particular, For example, the following bonding methods are suitable.
[Method of bonding flooring material to the floor]
As an adhesive tape or sheet having a fiber convex structure, for example, it has a fiber convex structure-forming pressure-sensitive adhesive layer on one surface of the adhesive tape or sheet base, and the other of the adhesive tape or sheet base Using a double-sided pressure-sensitive adhesive tape or sheet with a base material having a fiber convex structure non-forming pressure-sensitive adhesive layer on the surface, adhesion on the fiber convex structure non-forming pressure-sensitive adhesive layer side in the pressure-sensitive adhesive tape or sheet After the surfaces are bonded to the flooring material, the flooring material is inserted into a predetermined place, the adhesive surface of the fiber convex structure forming pressure-sensitive adhesive layer is bonded to the floor and temporarily bonded, and the flooring material is further bonded along the floor. After moving to a predetermined location, the flooring material is firmly bonded to the floor via an adhesive tape or sheet having a fiber convex structure portion by strong pressure bonding.

  Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples. In the following examples and comparative examples, the fibers can be sprayed in a state of being charged to a positive charge, and a long belt-like sheet is charged to a negative charge from one side to the other side. Using a box (size: length in the flow direction of the line: 2.5 m x width: 1.3 m x height: 1.4 m) provided with a line that can flow in a state, electrostatic flocking is performed. did. Specifically, in a state where the fibers are sprayed from the upper part (one place) in the box and sprayed at an applied voltage of 30 kV, a long belt-like sheet is placed in the box, and the surface on which the hair is planted is the upper surface. Then, electrostatic flocking was performed by introducing the line at a speed of 5 m / min and moving it on the line.

(Example 1)
1% by weight heptane of a polydimethylsiloxane-based silicone release treatment agent (trade name “KS-778” (Shin-Etsu Chemical Co., Ltd.)) on one side of a polyester film (trade name “Lumirror # 38” manufactured by Toray Industries, Inc .; thickness 38 μm) After the solution was applied, it was dried at 120 ° C. for 2 minutes to produce a release liner (release paper; sometimes referred to as “release liner A1”). The coating amount of the treatment agent was 0.05 g / m ² .

  The release liner A1 was punched using a mold having punches with a diameter of 1.0 mm (1.0 mmφ) at intervals of 12 mm, and punched portions with a diameter of 1 mm were formed at intervals of 12 mm. A release liner A1 having a pattern shape (sometimes referred to as “release liner A1 having a perforated portion”) was produced.

On the other hand, on a kraft paper laminated with polyethylene (sometimes referred to as “baseline A2 for liner”), a polydimethylsiloxane-based silicone release treatment agent (trade name “TPR6600” manufactured by GE Toshiba Silicones Co., Ltd.) When a weight% heptane solution is applied at a coating amount of 0.05 g / m ² , an uncured polydimethylsiloxane-based silicone release treatment layer (referred to as “uncured release treatment layer A2”) Formed). Thereafter, on the uncured release treatment layer A2, the release liner A1 having the perforated portion is a non-release treated surface of the release liner A1 having the perforated portion (the surface on which the silicone-based release treatment agent is not applied). In a form in contact with the uncured release treatment layer A2, the substrates were bonded together. Next, using an acrylic fiber (fiber thickness: 3.0 denier, fiber length: 0.5 mm), electrostatic flocking is applied from the surface on the side of the release liner A1 having a perforated portion, and an uncured release treatment layer After the acrylic fiber is planted on the surface of the release liner A1 having the perforated portion in A2, the acrylic fiber is flocked and then dried at 120 ° C. for 2 minutes to cure the uncured release treatment layer A2. Then, by forming the cured release treatment layer A2, a fiber convex structure transfer forming sheet ("fiber convex structure transfer formation sheet having a fiber raised portion directly on the surface of the cured release treatment layer A2". A1 ”may be referred to). That is, the fiber convex structure transfer forming sheet A1 has a layer structure of “liner base material A2 / release treatment layer A2 / having a fiber raised portion on the surface / release liner A1 having a perforated portion”.

In addition, 0.5 g / m ² of a 1% by weight heptane solution of a polydimethylsiloxane-based silicone release treatment agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) is applied on kraft paper laminated with polyethylene. After coating in an amount, drying is performed at 120 ° C. for 2 minutes to prepare a release liner (sometimes referred to as “release liner A3”), and then an acrylic pressure-sensitive adhesive is applied to the release-treated surface of the release liner A3. (Acrylic adhesive whose base polymer is butyl acrylate-acrylic acid copolymer) is applied so that the thickness after drying is 30 μm, and the adhesive layer (referred to as “adhesive layer A1”) A double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet A1”).

  A fiber convex structure is formed on the double-sided pressure-sensitive adhesive sheet A1 in such a form that the surface on the side of the release liner A1 having a perforated portion of the fiber convex structure transfer forming sheet A1 and the surface of the pressure-sensitive adhesive layer A1 of the double-sided pressure-sensitive adhesive sheet A1 are in contact. The transfer forming sheet A1 was bonded and pressure-bonded. After the lamination, the double-sided pressure-sensitive adhesive sheet A1 (“fiber raised” in which the fiber raised portion is transferred to the surface of the pressure-sensitive adhesive layer A1 of the double-sided pressure-sensitive adhesive sheet A1 by peeling the fiber convex structure transfer forming sheet A1 from the double-sided pressure-sensitive adhesive sheet A1. Part of the double-sided pressure-sensitive adhesive sheet A1 having a part). That is, the double-sided pressure-sensitive adhesive sheet A1 having the fiber raising portion has a layer configuration of “release liner A3 / adhesive layer A1 having the fiber raising portion on the surface”.

(Example 2)
1% by weight heptane of a polydimethylsiloxane-based silicone release treatment agent (trade name “KS-778” (Shin-Etsu Chemical Co., Ltd.)) on one side of a polyester film (trade name “Lumirror # 38” manufactured by Toray Industries, Inc .; thickness 38 μm) After the solution was applied, it was dried at 120 ° C. for 2 minutes to prepare a release liner (release paper; sometimes referred to as “release liner B1”). The coating amount of the treatment agent was 0.05 g / m ² .

  Drilling is performed on the release liner B1 using a die having a punching blade having a diameter of 1.5 mm (1.5 mmφ) at intervals of 6 mm, and a punching portion having a diameter of 1.5 mm is formed at intervals of 6 mm. A release liner B1 having a patterned pattern (sometimes referred to as “release liner B1 having a perforated portion”) was produced.

On the other hand, a polydimethylsiloxane-based silicone release treatment agent (trade name “KNS-320”, Shin-Etsu Chemical Co., Ltd.) is used on one side of a high-quality paper having a basis weight of 70 g / cm ² (sometimes referred to as “baseline B2 for liner”). 1 wt% heptane solution is applied at a coating amount of 0.4 g / m ² , and an uncured polydimethylsiloxane-based silicone release treatment agent layer (“uncured release treatment layer B2”) is applied. May be referred to as “). Thereafter, the release liner B1 having the perforated portion is formed on the uncured release treatment layer B2, and the non-release treatment surface of the release liner B1 having the perforated portion (the surface on which the silicone-based release treatment agent is not applied). In a form in contact with the uncured release treatment layer B2, the substrates were bonded together. Then, using a polyamide fiber (fiber thickness: 3 denier, fiber length: 0.5 mm), electrostatic flocking is performed from the surface of the release liner B1 side having a perforated portion, and in the uncured release treatment layer B2 After planting the polyamide fibers on the surface of the release liner B1 having a perforated part, the polyamide fiber is dried at 120 ° C. for 2 minutes to cure the uncured release treatment layer B2, By forming the cured release treatment layer B2, a fiber convex structure transfer forming sheet (“fiber convex structure transfer formation sheet B1”) having fiber raised portions directly on the surface of the cured release treatment layer B2. In some cases). That is, the fiber convex structure transfer forming sheet B1 has a layer configuration of “liner base material B2 / release treatment layer B2 / having a fiber raised portion on the surface / release liner B1 having a perforated portion”.

In addition, a 1% by weight heptane solution of a polydimethylsiloxane-based silicone release treatment agent (trade name “TPR6600” manufactured by GE Toshiba Silicones Co., Ltd.) is applied to kraft paper laminated with polyethylene at a rate of 0.5 g / m ² . After coating in an amount, drying is performed at 120 ° C. for 2 minutes to prepare a release liner (sometimes referred to as “release liner B3”), and then an acrylic pressure-sensitive adhesive is applied to the release-treated surface of the release liner A3. (Acrylic adhesive whose base polymer is butyl acrylate-acrylic acid copolymer) is applied so that the thickness after drying is 30 μm, and the adhesive layer (referred to as “adhesive layer B1”) A double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet B1”).

  A fiber convex structure is formed on the double-sided pressure-sensitive adhesive sheet B1 in such a form that the surface on the side of the release liner B1 having a perforated portion of the fiber convex structure transfer forming sheet B1 and the surface of the pressure-sensitive adhesive layer B1 of the double-sided pressure-sensitive adhesive sheet B1 are in contact. The transfer forming sheet B1 was bonded and pressure-bonded. After the lamination, the double-sided pressure-sensitive adhesive sheet B1 (“fiber raising) in which the fiber raised portion is transferred to the surface of the pressure-sensitive adhesive layer B1 in the double-sided pressure-sensitive adhesive sheet B1 by peeling the fiber convex structure transfer forming sheet B1 from the double-sided pressure-sensitive adhesive sheet B1. Part of the double-sided pressure-sensitive adhesive sheet B1 having a part). That is, the double-sided pressure-sensitive adhesive sheet B1 having the fiber raising portion has a layer configuration of “release liner B3 / adhesive layer B1 having the fiber raising portion on the surface”.

(Example 3)
1% by weight heptane of a polydimethylsiloxane-based silicone release treatment agent (trade name “KS-778” (Shin-Etsu Chemical Co., Ltd.)) on one side of a polyester film (trade name “Lumirror # 38” manufactured by Toray Industries, Inc .; thickness 38 μm) After the solution was applied, it was dried at 120 ° C. for 2 minutes to produce a release liner (release paper; sometimes referred to as “release liner C1”). The coating amount of the treatment agent was 0.05 g / m ² .

  The release liner C1 is perforated using a mold having punched blades with a diameter of 1.0 mm (1.0 mmφ) at intervals of 15 mm, and punched portions with a diameter of 1.0 mm are formed at intervals of 15 mm. A release liner C1 having a patterned pattern (sometimes referred to as “release liner C1 having a perforated portion”) was produced.

On the other hand, a polydimethylsiloxane-based silicone release treatment agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) is used on one side of a high-quality paper having a basis weight of 70 g / cm ² (sometimes referred to as “baseline C2 for liner”). ) 1 wt% heptane solution is applied at an application amount of 0.5 g / m ² , and an uncured polydimethylsiloxane-based silicone release treatment layer (“uncured release treatment layer C2”). May be called). Thereafter, the release liner C1 having the perforated part is provided on the uncured release treatment layer C2, and the non-release treatment surface (the surface on which the silicone-based release treatment agent is not applied) of the release liner C1 having the perforated part. In a form in contact with the uncured release treatment layer C2, the substrates were bonded together. Next, using a rayon fiber (fiber thickness 3 denier, fiber length 0.5 mm), electrostatic flocking is performed from the surface of the release liner C1 side having a perforated portion, and perforation in the uncured release treatment layer C2 After the rayon fibers are implanted on the surface of the release liner C1 having a part on the perforated part, drying is performed at 120 ° C. for 2 minutes to cure the uncured release treatment layer C2 to obtain a cured state. By forming the release treatment layer C2, a fiber convex structure transfer forming sheet (referred to as "fiber convex structure transfer formation sheet C1") having fiber raised portions directly on the surface of the release treatment layer C2 in a cured state. In some cases). That is, the fiber convex structure transfer forming sheet C1 has a layer structure of “liner base material C2 / release treatment layer C2 / having a fiber raised portion on the surface / release liner C1 having a perforated portion”.

In addition, 0.5 g / m ² of a 1% by weight heptane solution of a polydimethylsiloxane-based silicone release treatment agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) is applied on kraft paper laminated with polyethylene. After coating in an amount, drying is performed at 120 ° C. for 2 minutes to prepare a release liner (sometimes referred to as “release liner C3”), and then an acrylic pressure-sensitive adhesive is applied to the release-treated surface of the release liner C3. (Acrylic adhesive whose base polymer is butyl acrylate-acrylic acid copolymer) is applied so that the thickness after drying is 30 μm, and the adhesive layer (referred to as “adhesive layer C1”) A double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet C1”).

  A fiber convex structure is formed on the double-sided pressure-sensitive adhesive sheet C1 in such a form that the surface on the release liner C1 side having a perforated portion of the fiber convex structure transfer forming sheet C1 is in contact with the surface of the pressure-sensitive adhesive layer C1 of the double-sided pressure-sensitive adhesive sheet C1. The transfer forming sheet C1 was bonded and pressure-bonded. After the lamination, the double-sided pressure-sensitive adhesive sheet C1 (“fiber raising” in which the fiber raised portion is transferred to the surface of the pressure-sensitive adhesive layer C1 in the double-sided pressure-sensitive adhesive sheet C1 by peeling the fiber convex structure transfer forming sheet C1 from the double-sided pressure-sensitive adhesive sheet C1. A double-sided pressure-sensitive adhesive sheet C1 having a part). That is, the double-sided pressure-sensitive adhesive sheet C1 having the fiber raising portion has a layer configuration of “release liner C3 / adhesive layer C1 having the fiber raising portion on the surface”.

(Comparative Example 1)
A 1% by weight heptane solution of a polydimethylsiloxane-based silicone release treatment agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) on a kraft paper laminated with polyethylene is applied at a coating amount of 0.5 g / m ^2. After coating, drying was performed at 120 ° C. for 2 minutes to prepare a release liner (sometimes referred to as “release liner D1”).

  An acrylic pressure-sensitive adhesive (an acrylic pressure-sensitive adhesive whose base polymer is a butyl acrylate-acrylic acid copolymer) is applied to the release-treated surface of the release liner D1 so that the thickness after drying is 30 μm. Then, a pressure-sensitive adhesive layer (sometimes referred to as “pressure-sensitive adhesive layer D1”) was formed to produce a double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet D1”). That is, the double-sided pressure-sensitive adhesive sheet D1 has a layer configuration of “release liner D1 / adhesive layer D1”.

(Evaluation)
Double-sided pressure-sensitive adhesive sheets obtained from Examples and Comparative Examples (double-sided pressure-sensitive adhesive sheet A1 having a fiber raised portion, double-sided pressure-sensitive adhesive sheet C1 having a fiber-raised portion, double-sided pressure-sensitive adhesive sheet D1) The adhesive surface of the pressure-sensitive adhesive layer (the pressure-sensitive adhesive layer A1 having a fiber raised portion on the surface and the pressure-sensitive adhesive layer C1 having a fiber raised portion on the surface), the pressure-sensitive adhesive surface of the pressure-sensitive adhesive layer D1 in Comparative Example 1 on the acrylic plate, Is it easy to move from the release liner side by applying a load of 25 g / 22.5 cm ² and temporarily moving it 6 mm from the position where the double-sided PSA sheet is attached, and then pressing it strongly? The pasting position correction workability was evaluated depending on how.

  Moreover, after pasting, after leaving it to stand at room temperature (23 ° C.) for 24 hours, the adhesive strength to the acrylic plate was measured using a Tensilon tensile tester, and the ratio to the adhesive strength of the double-sided PSA sheet of Comparative Example 1 was determined. The adhesive strength of the pressure-sensitive adhesive layer having a fiber raised portion on the surface was evaluated.

  These evaluation results are shown in the columns of “Attachment position correction workability” and “Adhesive strength recovery rate (%)” in Table 1, respectively.

  As is clear from Table 1, by transferring the fiber convex structure portion using the fiber convex structure transfer forming sheet according to the example, the surface of the pressure-sensitive adhesive layer is entirely or partially fiber raised. It was confirmed that an adhesive sheet having a part can be obtained. Moreover, as a pressure-sensitive adhesive sheet having a fiber raised portion on the surface of the pressure-sensitive adhesive layer, the pressure-sensitive adhesive sheet partially having a fiber raised portion on the surface of the pressure-sensitive adhesive layer is easy to correct the position after the initial application and is strongly applied. After that, it was confirmed that the adhesive strength was good.

FIG. 1A is a schematic cross-sectional view partially showing an example of a state in which a fiber convex structure transfer sheet in the present invention is bonded to the surface of an adhesive layer to transfer and form a fiber convex structure portion. Shows the state where the fiber convex structure transfer forming sheet is bonded to the surface of the pressure-sensitive adhesive tape or the adhesive layer for the sheet, FIG. 1B is peeled off after bonding the fiber convex structure transfer forming sheet, The state which is carrying out transfer formation of the fiber convex structure part on the surface of the adhesive tape or the adhesive layer for sheets is shown. It is the schematic plan view which looked at the adhesive tape or sheet | seat in which the fiber raising part 5 of FIG. 1 was transfer-formed from the upper surface. FIG. 3 is a schematic cross-sectional view partially showing another example of a state in which the fiber convex structure transfer sheet in the present invention is bonded to the surface of the pressure-sensitive adhesive layer to transfer and form the fiber convex structure portion. a) shows a state in which the fiber convex structure transfer forming sheet is bonded to the surface of the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer for the sheet, and FIG. Thus, the fiber convex structure is transferred and formed on the surface of the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer for the sheet. It is a schematic sectional drawing which shows the example of the sheet | seat for fiber convex structure transfer formation of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fiber convex structure transfer sheet 2 Release liner in fiber convex structure transfer sheet 1 2a Hole part in fiber convex structure transfer sheet release liner 3 Separation in fiber convex structure transfer sheet 1 Treatment Layer 4 Substrate in Fiber Convex Structure Transfer Forming Sheet 5 Fiber Raised Part Transfer Formed on Adhesive Tape or Adhesive Layer for Sheet 6 Adhesive Tape or Sheet 6a Adhesive Layer in Adhesive Tape or Sheet 6 6a1 Adhesive Tape Or the surface of the adhesive layer 6a for sheets 6b The base material in the adhesive tape or sheet 11 The sheet | seat for fiber convex structure transfer formation 31 The peeling process layer in the sheet | seat 11 for fiber convex structure transfer formation 41 The sheet for fiber convex structure transfer formation The base material in 11 51 The fiber raising part transferred and formed in the adhesive tape or the adhesive layer for sheets 61 Adhesive tape 61a1 Adhesive layer in adhesive tape or sheet 61a1 Surface of adhesive tape or adhesive layer 61a for sheet 61b Base material in adhesive tape or sheet 61 7 Sheet for fiber convex structure transfer formation 7a Both surfaces are release surfaces Release liner 7a1 Hole in release liner 7a 7b Release treatment layer 7c Substrate 7d Fiber raising portion for transfer formation on pressure-sensitive adhesive layer 71 Fiber convex structure transfer sheet 71a Substrate having an uneven structure 71a1 Convex part of substrate 71a 71a2 Concave part 71b of base material 71a Exfoliation treatment layer formed on the surface of convex part 71a1 of base material 71a 71c Exfoliation treatment layer 71d formed on the bottom surface of concavity 71a2 of base material 71a 71d Adhesive layer Raised fiber for transfer formation

Claims (10)

A fiber convex structure transfer forming sheet capable of transferring and forming a fiber convex structure portion on the surface of an adhesive layer, wherein a release treatment layer is formed on at least one surface side, and the release treatment layer A fiber convex structure transfer forming sheet comprising a transfer convex fiber convex structure part for transferring and forming a fiber convex structure part directly on the surface of the adhesive layer. The fiber convex structure transfer forming sheet according to claim 1, wherein the transfer convex fiber convex structure portion is formed directly and at least partially on the surface of the release treatment layer. The fiber convex structure transfer forming sheet according to claim 1 or 2, wherein the transfer convex fiber convex structure portion is formed on the surface of the release treatment layer without a pressure-sensitive adhesive layer by fiber implantation. A concave portion is partially formed on the surface on the side of the release treatment layer, and a release treatment layer is formed in the recess, and the convex structure of the transfer forming fiber is directly formed on the surface of the release treatment layer in the recess. The sheet | seat for fiber convex structure transcription | transfer formation in any one of Claims 1-3 which has a part. The fiber convex structure transfer forming sheet according to any one of claims 1 to 4, wherein the fiber convex structure portion is a fiber raised portion having a structure in which the fibers are erected from the surface of the pressure-sensitive adhesive layer. The fiber convex structure according to any one of claims 1 to 5, wherein the fiber convex structure portion can be transferred and formed on the surface of the pressure-sensitive adhesive layer so as to have a predetermined pattern shape as a whole. Transfer forming sheet. The fiber convex shape according to any one of claims 1 to 6, wherein the pressure-sensitive adhesive layer for forming the fiber convex structure portion is a pressure-sensitive adhesive layer formed on at least one surface of a pressure-sensitive adhesive tape or sheet support. Structure transfer sheet. The sheet for forming a fiber convex structure transfer according to claim 7, wherein the surface of the pressure-sensitive adhesive layer on which the fiber convex structure portion is formed is a surface of the pressure-sensitive adhesive surface on at least one side of the support in the double-sided pressure-sensitive adhesive tape or sheet. A method for producing the fiber convex structure transfer forming sheet according to any one of claims 1 to 8, wherein the release treatment agent is applied to at least one surface of the substrate in the fiber convex structure transfer forming sheet. Is applied to form an uncured release layer, and then, using a flocking method, the surface of the uncured release layer is directly planted, and the uncured release layer is cured. The fiber convex structure transfer is characterized by forming the fiber convex structure portion for transfer formation for transferring and forming the fiber convex structure portion on the surface of the pressure-sensitive adhesive layer directly on the surface of the release treatment layer. A method for producing a forming sheet. A release treatment layer corresponding to the hole of the release liner is obtained by performing flocking on the surface of the uncured release treatment layer in a state where the release liner having the hole is superimposed on the surface of the uncured release treatment layer. The method for producing a fiber convex structure transfer forming sheet according to claim 9, wherein a fiber forming structure portion for transfer formation for transferring and forming the fiber convex structure portion on the surface of the pressure-sensitive adhesive layer is formed on the surface portion of the adhesive layer.

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