JP2006022181A - Adhesive tape or sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive tape or sheet excellent in reworkability and in adhesion position-correcting workability. <P>SOLUTION: This adhesive tape or sheet in which an adhesive layer is formed on at least one side of a support is characterized by partially having a fiber-projecting structure portion at at least one end side site among both end portions in the lateral direction or in the longitudinal direction on the surface of the adhesive layer on at least one side of the support. This fiber-projecting structure portion is suitably a fiber-raised portion of structure in which fibers are raised from the surface of the adhesive layer. The end side site where the fiber-projecting structure portion is formed may be a site from either one of both the end portions of the surface of the adhesive layer in the lateral direction or in the longitudinal direction to a position corresponding to 5 to 50 % of the total lateral length of the adhesive tape or sheet. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pressure-sensitive adhesive tape or sheet, and more particularly, to a pressure-sensitive adhesive tape or sheet excellent in reworkability and adhesion position correction workability when an adherend is bonded using the pressure-sensitive adhesive tape or sheet.

  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 this purpose, the flooring material must be moved along the floor by a considerable distance after the flooring material is inserted. . 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 viewpoint of adhesion reliability.

  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.

Therefore, the objective of this invention is providing the adhesive tape or sheet | seat which is excellent in rework property and sticking position correction workability | operativity.
Another object of the present invention is to provide 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-mentioned object, the present inventors have found that when a specific structure portion made of fibers is provided only at the end portion side in the width direction on the pressure-sensitive adhesive layer surface of the pressure-sensitive adhesive tape or sheet. It has been found that when the tape or sheet is adhered to a predetermined position of the adherend, temporary fixing and reattachment can be easily performed, and the attachment position can be easily corrected. The present invention has been completed based on these findings.

  That is, the present invention is a pressure-sensitive adhesive tape or sheet in which a pressure-sensitive adhesive layer is formed on at least one surface of a support, and is in the width direction or longitudinal direction on the surface of the pressure-sensitive adhesive layer on at least one surface of the support. A pressure-sensitive adhesive tape or sheet characterized in that a fiber convex structure part is partially provided at a part on one end side of both end parts.

  In the pressure-sensitive adhesive tape or sheet, the fiber convex structure portion is preferably a fiber raised portion having a structure in which fibers stand up from the surface of the pressure-sensitive adhesive layer.

  Moreover, as a site | part by the side of the edge part in which the fiber convex structure part is formed, from either one edge part of the width direction in the surface of an adhesive layer or the both ends of a longitudinal direction, in an adhesive tape or a sheet | seat The site | part to the position corresponded to 5-50% of length with respect to the full length of the width direction may be sufficient. As a site | part by the side of the edge part in which the fiber convex-shaped structure part is formed, it is 5 to 30% with respect to the full length of the width direction from any one edge part of the width direction both ends in an adhesive tape or a sheet | seat. It is preferable that it is a site | part of length.

  The pressure-sensitive adhesive tape or sheet of the present invention is excellent in reworkability and pasting position correction workability. Therefore, the adhesive tape or sheet of the present invention is useful as an adhesive tape or sheet for attaching a flooring material.

  In the pressure-sensitive adhesive tape or sheet of the present invention, as shown in FIG. 1, at the end of one of the widthwise or longitudinal ends of the surface of the pressure-sensitive adhesive layer on at least one side of the support. A fiber convex structure part is partially formed in the part.

FIG. 1 is a schematic view partially showing an example of the pressure-sensitive adhesive tape or sheet of the present invention, (a) is a schematic plan view seen from the top surface of the pressure-sensitive adhesive tape or sheet, and (b) is an XY in (a). It is a schematic sectional drawing of a line. In FIG. 1, 1 is a pressure-sensitive adhesive tape or sheet, 2 is a pressure-sensitive adhesive layer for a pressure-sensitive adhesive tape or sheet (sometimes simply referred to as “pressure-sensitive adhesive layer”), 2a is the surface of the pressure-sensitive adhesive layer 2, and 2a1 is a pressure-sensitive adhesive layer 2. 2a2 is the other end of the surface 2a of the pressure-sensitive adhesive layer 2, 3 is a pressure-sensitive adhesive tape or sheet base material (sometimes simply referred to as "base material"), and 4a is a perforated portion. 4a1 is a perforated part of the perforated part-containing release liner 4a, 4b is a pressure-sensitive adhesive tape or sheet release liner ("perforated part non-perforated part"). 5) is a fiber raising part. The pressure-sensitive adhesive tape or sheet 1 has a pressure-sensitive adhesive layer 2 formed on one side of a substrate 3 as a support, and the pressure-sensitive adhesive layer 2 is protected by a perforated portion-containing release liner 4a at one end 2a1 side. The other end 2a2 side portion is protected by the perforated portion-free release liner 4b, and the surface 2a of the pressure-sensitive adhesive layer 2 has a portion corresponding to the perforated portion 4a1 of the release liner 4a. Further, a fiber raised portion 5 is provided as a fiber convex structure portion. In addition, in FIG. 1, the said fiber raising part 5 is provided in the shape which forms a some line as a whole, and the space | interval (space | interval of the center part of each line) is 5 mm. The interval between the fiber raised portions included in one line (the interval between the center portions of the fiber raised portions) is 5 mm. Further, the shape of one fiber raising portion on the surface of the pressure-sensitive adhesive layer is a substantially circular shape having an radius of about 0.4 mm (area is about 0.5 mm ² ). 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.

  Such a fiber raising part 5 is formed in the shape of the line in the form extended in the longitudinal direction of the adhesive tape or the sheet | seat 1 in the site | part of the one end part 2a1 side of the width direction in the surface 2a of the adhesive layer 2. And the width | variety of the site | part by the side of the edge part in which the fiber raising part 5 is formed is 15 mm.

  As described above, in the pressure-sensitive adhesive tape or sheet of the present invention, the surface of the pressure-sensitive adhesive layer on at least one surface of the support is either one of the end portions in the width direction or the lengthwise direction of the pressure-sensitive adhesive tape or sheet. Since the fiber convex structure portion is partially formed in the side portion, the adhesive tape or the surface of the adhesive layer in the end portion portion where the fiber convex structure portion is formed, The sheet can be temporarily adhered to the adherend, and then the pressure-sensitive adhesive tape or sheet can be firmly adhered to the adherend by pressure bonding using the entire surface of the pressure-sensitive adhesive layer. Therefore, when the pressure-sensitive adhesive tape or sheet of the present invention is used, the pressure-sensitive adhesive tape or sheet can be attached with excellent reworkability and sticking position correction workability.

  As the site | part of the edge part side where the fiber convex structure part is formed (it may be called "a fiber convex structure part formation edge part side part"), Of the both ends of the width direction in an adhesive tape or a sheet | seat Either one of the end-side portions, either one of the end portions in the longitudinal direction of the adhesive tape or sheet, or both ends in the width direction of the adhesive tape or sheet It is preferable that it is the site | part by the side of either one of the parts.

  In addition, as the fiber convex structure forming end portion side portion, the width and the like are particularly limited as long as it is a portion on the end portion side of either one of the both ends in the width direction or the longitudinal direction of the adhesive tape or sheet. Not. The width of the fiber convex structure forming end side portion is 5 to 50% (preferably 5 to 40%, more preferably 5 to 30%) of the entire length in the width direction of the adhesive tape or sheet. A corresponding width is preferred. That is, as the fiber convex structure forming end portion side portion, the end portion (the width direction or both end portions of the longitudinal direction is the end portion side portion of the both ends in the width direction and the longitudinal direction). Position corresponding to a length of 5 to 50% (preferably 5 to 40%, more preferably 5 to 30%) of the entire length in the width direction of the pressure-sensitive adhesive tape or sheet. It is preferable that the region is up to.

  Therefore, in this invention, as a fiber convex structure part formation edge part side site | part, it is 5-30 with respect to the full length of the width direction from either one edge part of the width direction both ends in an adhesive tape or a sheet | seat. It is preferable that it is a site | part of length%.

  The width of the fiber convex structure forming end portion side portion is desirably 5 mm or more (preferably 8 mm or more, more preferably 10 mm or more) in order to effectively exert its action or effect.

  In the present invention, the fiber convex structure forming end side portion is usually (particularly, the surface of the pressure-sensitive adhesive layer on which the fiber convex structure is formed has a cavity at a position corresponding to the fiber convex structure. A portion between the end portion on the side where the fiber convex structure portion is formed and the fiber convex structure portion positioned most on the other end side; and To do. The pressure-sensitive adhesive layer surface on which the fiber convex structure portion is formed is protected by a release liner having a cavity portion at a position corresponding to the fiber convex structure portion and a release liner not having the cavity portion. A portion between the end on the side where the fiber convex structure portion is formed and the position corresponding to the boundary between the release liner having the cavity and the release liner not having the cavity, can do. Examples of the release liner having the cavity include a release substrate having a cavity as shown below, and a fiber convex structure transfer forming sheet. Therefore, in the present invention, the fiber convex structure portion forming end side portion may have a slightly different width depending on the presence or absence of a release liner having a hollow portion. It can be made suitable with the site | part from the edge part of the formed side to the fiber convex structure part most located in the other edge part side.

(Fiber convex structure)
In the pressure-sensitive adhesive tape or sheet of the present invention, as shown in FIG. 1, either the width direction or the lengthwise end portion is formed on the surface of the pressure-sensitive adhesive layer formed on at least one surface of the support. A fiber convex structure portion is partially formed at a site on one end side. As the fiber convex structure part, the surface of the pressure-sensitive adhesive layer at the end portion side where the fiber convex structure part is formed can be temporarily bonded to the adherend, and thereafter, by pressure bonding, It is important to have a configuration that can be firmly adhered to the body. The fiber convex structure part is not particularly limited as long as it is a structure part that is convexly formed by fibers. For example, a fiber raised part having a structure in which fibers stand up from the surface of the pressure-sensitive adhesive layer. 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 portion are not particularly limited, and can be appropriately selected according to the intended reworkability, pasting position correction 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 stands up from the surface of the adhesive layer 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 FIG. 1), (2) the central portion of one fiber is on the surface of 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), and (3) both ends of one fiber Is 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, 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, , Including these structures are 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 linearly from the surface of the pressure-sensitive adhesive tape or the adhesive layer for the sheet, such as an I-shape, and is in the form of a jagged shape, a wavy shape, a loop shape, etc. It may be in a state of standing up as a whole.

  The fiber convex structure portion is partially provided on the surface of the pressure-sensitive adhesive layer at a portion on one end side of both end portions in the width direction or longitudinal direction of the pressure-sensitive adhesive tape or sheet. In this way, in the fiber convex structure part that is partially provided in the part on the one end side of either the width direction or the longitudinal direction end part on the surface of the pressure-sensitive adhesive layer, The shape is not particularly limited and can be appropriately selected according to the intended reworkability, sticking position correction workability, the type of adherend, and the like, and may have a predetermined pattern shape.

  The fiber convex structure is formed in any form as long as it is partially formed at either one of the width direction or longitudinal direction end portions on the pressure-sensitive adhesive layer surface. For example, it may be formed in a form that forms a pattern shape as a whole. In the present invention, the fiber convex structure portion is preferably formed in a form in which a plurality of fiber convex structure portions are arranged at predetermined intervals so as to form a plurality of lines as a whole. . In this case, one line may be formed by a fiber convex structure part (sometimes referred to as “line fiber convex structure part”) formed in a single line, and a plurality of fibers The convex structure portion may be formed by being arranged in a line shape with a predetermined interval. That is, one line (each line in a plurality of lines) may be composed of a single (or one) fiber convex structure portion, and may be composed of a plurality (or two or more) fiber convex structure portions. It may be configured.

  In addition, when the fiber convex structure part is formed in a form that forms a plurality of lines as a whole, the direction of each line (line direction) is not particularly limited, for example, the length of an adhesive tape or sheet Any of a direction, a width direction, and other directions (an oblique direction etc.) may be sufficient, but the longitudinal direction and the width direction of an adhesive tape or a sheet are preferable. In addition, when the fiber convex structure part is formed at any one of the ends in the width direction on the pressure-sensitive adhesive layer surface, the longitudinal direction of the pressure-sensitive adhesive tape or sheet is preferable, In the case where the fiber convex structure is formed at any one of the longitudinal ends of the pressure-sensitive adhesive layer surface, the width direction of the pressure-sensitive adhesive tape or sheet is preferred.

  In addition, as the plurality of lines formed by the fiber convex structure portion, all may be non-parallel to each other, or some may be non-parallel to each other (that is, some may be parallel), but all may be parallel to each other. It is preferable that That is, it is preferable that a plurality of lines formed by the fiber convex structure portion have only one line direction. As described above, it is preferable that the plurality of lines formed by the fiber convex structure portion are formed in a mutually parallel positional relationship as a whole. In addition, when the several line formed of the fiber convex structure part is formed in the non-parallel positional relationship mutually entirely or partially, lines may cross | intersect.

  Furthermore, when the plurality of lines formed by the fiber convex structure portion are formed in a positional relationship parallel to each other, the interval between adjacent lines may not be constant (all or part of It may be formed in different forms) but is preferably constant. That is, it is preferable that the plurality of lines formed by the fiber convex structure portions are formed in a form that is parallel to each other and that the intervals between adjacent lines are all the same. In addition, as a space | interval (namely, width | variety of the adhesive layer surface to expose) which adjoins, it does not restrict | limit in particular, The width | variety of an adhesive tape or a sheet | seat, the width | variety of a fiber convex structure part formation edge part side part, fiber convex The number or density of multiple lines formed by the structure, the width of each line, the adhesive strength of the adhesive tape or sheet to the adherend, the desired reworkability and workability for correcting the pasting position, the type of adherend, etc. It can be selected as appropriate according to the conditions. Specifically, for example, when a plurality of lines formed by the fiber convex structure portion are formed at a constant interval in a parallel positional relationship, the interval between adjacent lines is, for example, 1 to 100 mm ( Preferably, it can select from the range of 2-30 mm, More preferably, it is 3-10 mm.

  In addition, the plurality of lines formed by the fiber convex structure portion are formed at either one of the end portions in the width direction of the adhesive tape or sheet, and the longitudinal direction of the adhesive tape or sheet As the line direction (in a linear form in the longitudinal direction), the distance between the line formed on the end side and the end of the adhesive layer surface is , Not particularly limited, width of adhesive tape or sheet, width of fiber convex structure forming end portion side, number or density of a plurality of lines formed by fiber convex structure, width of each line, adhesive tape Or it can select suitably according to the adhesive force to the adherend of a sheet | seat, the target rework property, sticking position correction workability | operativity, the kind of adherend, etc. Specifically, the distance between the line formed on the end side and the end of the pressure-sensitive adhesive layer surface is, for example, 0 to 100 mm (preferably 0 to 30 mm, more preferably 0 to 10 mm). You can choose from a range. In addition, when the distance between the line formed on the end side and the end of the pressure-sensitive adhesive layer surface is 0 m, the line formed on the end side is formed on the end of the pressure-sensitive adhesive layer surface. It means that

  Furthermore, in the plurality of lines formed by the fiber convex structure portion, the width of each line may not be constant (although it may be different in all or part), It is preferably constant. That is, it is preferable that all the lines have the same width. The width of each line is not particularly limited, and is the width of the adhesive tape or sheet, the width of the fiber convex structure forming end portion, the number or density of the plurality of lines formed by the fiber convex structure. The distance between adjacent lines, the adhesive strength of the adhesive tape or sheet to the adherend, the desired reworkability and the workability for correcting the applied position, the type of adherend, and the like can be selected as appropriate. Specifically, for example, when a plurality of lines formed by the fiber convex structure portion are formed with a constant width, the width of each line is, for example, 10 μm to 10 mm (preferably 30 μm to 5 mm, further Preferably, it can select from the range of 50 micrometers-3 mm).

  Accordingly, in the present invention, as the plurality of lines formed by the fiber convex structure portion, a certain width (same as the same) is provided at either one of the end portions in the width direction of the adhesive tape or the sheet. It is preferable that a plurality of (width) lines are formed in parallel and at constant intervals (same intervals) with the longitudinal direction of the adhesive tape or sheet as the line direction (in the form of a straight line in the longitudinal direction).

  In addition, in the plurality of lines formed by the fiber convex structure portion, the length of each line in the line direction (longitudinal direction of the line) is not particularly limited, and can be appropriately selected according to the line direction and the like. . For example, when the line is formed with the longitudinal direction of the pressure-sensitive adhesive tape or sheet as the line direction at either one of the ends in the width direction of the pressure-sensitive adhesive tape or sheet, the line direction of the line The length can be the maximum length in the longitudinal direction of the adhesive tape or sheet.

  In addition, in the plurality of lines formed by the fiber convex structure part, the number or density of the lines is not particularly limited, and the width of the adhesive tape or sheet, the width of the fiber convex structure part forming end side part, the adhesive It can be appropriately selected according to the adhesive strength of the tape or sheet to the adherend, the intended reworkability and workability for correcting the applied position, the type of adherend, and the like.

  In addition, when each line in the plurality of lines formed by the fiber convex structure portion is formed by arranging the plurality of fiber convex structure portions at a predetermined interval, each line (one line) The space | interval between each fiber convex-shaped structure part contained in can be selected from the range of about 1-100 mm (preferably 2-30 mm, more preferably 3-10 mm), for example. 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 each line in the plurality of lines formed by the fiber convex structure portion is formed by arranging the plurality of fiber convex structure portions at a predetermined interval, one fiber convex structure portion The shape on the surface of the pressure-sensitive adhesive layer is not particularly limited, and may be, for example, a substantially circular shape, a substantially polygonal shape, or an indefinite shape. Moreover, the number of the fiber convex structure part currently formed in the surface of an adhesive layer is not restrict | limited. The area of each fiber convex structure is not particularly limited, and is selected from a range of, for example, about 0.1 to 10 mm ² (preferably 0.2 to ⁵ mm ² , more preferably 0.3 to ³ mm ² ). However, it may be less than 0.1 mm ² or may exceed 10 mm ² .

Furthermore, each line in the plurality of lines formed by the fiber convex structure portions is formed with a plurality of fiber convex structure portions arranged at predetermined intervals, and each fiber convex structure portion When it is provided so that the area is 0.1 to 10 mm ² , the shortest distance between the fiber convex structures is, for example, 1 to 100 mm (preferably 2 to 30 mm, more preferably 3 to 10 mm). ) Degree.

  In addition, the total area of the portion where the fiber convex structure portion is provided on the surface of the pressure-sensitive adhesive layer (the area of the total fiber convex structure portion) is not particularly limited. For example, the fiber convex structure portion forming end portion The area is preferably 0.001 to 20% (preferably 0.005 to 15%, more preferably 0.01 to 10%) with respect to the total surface area of the side portion. When the area on the pressure-sensitive adhesive layer surface of the entire fiber convex structure portion is less than 0.001% with respect to the total surface area of the fiber convex structure forming end portion side portion, the effect of reducing the initial adhesive force is reduced, Reworkability and pasting position correction workability deteriorate. On the other hand, when the area on the pressure-sensitive adhesive layer surface of the all-fiber convex structure part exceeds 20% with respect to the total surface area of the fiber-convex structure part forming end side part, the rework property and the pasting position correction workability are improved. However, the adhesive force to the adherend of the pressure-sensitive adhesive tape or sheet in the fiber convex structure forming end side portion is reduced.

  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, polyolefin fiber, silicone fiber, fluorine fiber (fluorine resin) Fiber). As the fiber, cotton fiber, rayon fiber, polyamide fiber, and polyester fiber are suitable.

  Only 1 type of fiber may be used and 2 or more types may be used in combination.

  As such a fiber, a short fiber can be suitably used. When the length of the fiber is increased, the adhesive force of the pressure-sensitive adhesive tape or sheet to the adherend at the fiber convex structure forming end side portion is not preferable. 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, the pressure applied when the pressure-sensitive adhesive layer in the fiber convex structure forming end side portion is adhered to the adherend may be low. This is not preferable because the correction workability is lowered. Further, 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.

  The thickness of the fiber is not particularly limited, and can be selected from a range of about 0.1 to 20 denier (preferably 0.5 to 15 denier, more preferably 1 to 6 denier). If the thickness of the fiber is too large, the pressure applied when the pressure-sensitive adhesive layer in the fiber convex structure forming end portion side is adhered to the adherend increases 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 force is lowered, and the reworkability and the workability for correcting the attachment position are lowered.

  The method for forming the fiber convex structure portion (particularly, the fiber raising portion) at a predetermined site on the surface of the pressure-sensitive adhesive layer is not particularly limited, but as shown below, a flocking processing method (particularly electrostatic flocking) The processing 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. In addition, the hair transplantation processing method is a fiber convex structure transfer forming sheet capable of transferring and forming a fiber convex structure portion on a predetermined part of the pressure sensitive adhesive layer surface of the pressure sensitive adhesive tape or sheet or on the surface of the pressure sensitive adhesive layer. It can be applied to a predetermined part of a predetermined surface. Thus, when applying the flocking method to a predetermined part of the surface of the pressure-sensitive adhesive layer in the pressure-sensitive adhesive tape or sheet or a predetermined part of the predetermined surface of the fiber convex structure transfer forming sheet, A release substrate having a hollow portion at a position corresponding to a predetermined portion for forming the fiber convex structure portion on the surface of the pressure-sensitive adhesive layer in the sheet or on a predetermined surface of the fiber convex structure transfer forming sheet ( In particular, it is preferable to use a plurality of release substrates (particularly, release films) having a shape corresponding to a portion where a fiber convex structure portion is not formed.

(Adhesive layer for adhesive tape or sheet)
In the pressure-sensitive adhesive tape or sheet, the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer (pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer) is not particularly limited, and examples thereof include rubber-based pressure-sensitive adhesives, acrylic pressure-sensitive adhesives, polyester-based pressure-sensitive adhesives, and urethanes. Known pressure-sensitive adhesives such as a pressure-sensitive adhesive, polyamide-based pressure-sensitive adhesive, epoxy-based pressure-sensitive adhesive, vinyl alkyl ether-based pressure-sensitive adhesive, silicone-based pressure-sensitive adhesive, and fluorine-based pressure-sensitive adhesive 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 layer is cross-linked when forming the pressure-sensitive adhesive layer, 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), room temperature, etc. Any of the natural curing methods of curing naturally with

  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.) as a base polymer; an 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 methylglycidyl (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 layer, a known or conventional forming method can be employed. For example, in the case of a pressure-sensitive adhesive tape or sheet having a pressure-sensitive adhesive tape or a base material for sheet, A method of applying an adhesive on a base material (adhesive tape or base material for sheet) (application method), an adhesive is applied on a release film such as a release liner, and an adhesive layer is formed. Examples thereof include a method (transfer method) of transferring the agent layer onto the substrate. 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, the pressure-sensitive adhesive layer is formed by applying a pressure-sensitive adhesive on the release surface of a release liner as a support. Examples thereof include a method (application method).

  It does not restrict | limit especially as thickness of an adhesive layer, For example, it can select from the range of about 1-1000 micrometers (preferably 10-500 micrometers).

(Support)
As the support for supporting the pressure-sensitive adhesive layer, the pressure-sensitive adhesive tape or sheet is a base material (the pressure-sensitive adhesive tape or the base material for the sheet) when the pressure-sensitive adhesive tape or sheet is a pressure-sensitive adhesive tape or sheet having a pressure-sensitive adhesive layer on one or both sides. On the other hand, in the case of a double-sided pressure-sensitive adhesive tape or sheet of a base material-less type, a release liner (pressure-sensitive adhesive tape or sheet release liner; separator) can be used. In the case where the pressure-sensitive adhesive tape or sheet is a pressure-sensitive adhesive tape or sheet having a base material type on one or both surfaces, the pressure-sensitive adhesive layer is formed on one or both surfaces of the base material as a support. In addition, on the surface of the pressure-sensitive adhesive layer formed on one side or both sides of the base material, the fiber convex structure part is partially in a part on either one end side of both ends in the width direction or the longitudinal direction. The surface of the pressure-sensitive adhesive layer that is formed may be protected by a release surface on the back side of the substrate or a release liner (adhesive tape or sheet release liner). On the other hand, when the pressure-sensitive adhesive tape or sheet is a substrate-less double-sided pressure-sensitive adhesive tape or sheet, a release liner (adhesive tape or sheet release liner) serves as a support for the pressure-sensitive adhesive layer, and one side of the pressure-sensitive adhesive layer Or the fiber convex structure part is partially formed in the site | part by the side of either one of the both ends of the width direction or a longitudinal direction on both surfaces. Note that the release liner as the support supports the pressure-sensitive adhesive layer and protects the surface of the pressure-sensitive adhesive layer until the pressure-sensitive adhesive tape or sheet is used.

(Adhesive tape or sheet substrate)
Examples of the base material (adhesive tape or base material for sheet) 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, craft paper) Paper base materials such as glassine paper, synthetic paper, top coat paper, etc .; fiber base materials such as cloth, nonwoven fabric, and net; rubber base materials such as rubber sheets; foams such as foam sheets, etc. Thin leaves can be used. The substrate may have a single layer form or may have a laminated form. For example, as the base material, a plastic base material and another base material (paper base material, etc.) are laminated (2-3 layers composite) by lamination or coextrusion. Also good.

  The substrate is preferably a plastic film or sheet. 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), wholly aromatic polyamide (aramid); polyimide resins; polyether ether ketone (PEEK); fluorine resins such as polytetrafluoroethylene; rayon. 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, for the base material, if necessary, 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, a hydroquinone-based anti-aging agent, Phenolic antioxidants, phosphorus antioxidants, phosphite antioxidants, antioxidants, UV absorbers (eg salicylic acid derivatives, benzophenone UV absorbers, benzotriazole UV absorbers, hindered amines) And other additives such as lubricants, plasticizers, and colorants (for example, pigments, dyes, etc.).

  One or both sides of the base material are subjected to appropriate surface treatments such as physical treatment such as corona treatment and plasma treatment, and chemical treatment such as primer for the purpose of improving adhesion to the adhesive layer. It may be.

  As thickness of a base material, it can select from the range of about 10-300 micrometers, for example, Preferably about 30-200 micrometers.

(Peeling tape or sheet release liner)
Examples of the release liner (adhesive tape or release liner for sheet) include, in addition to a substrate having a release treatment layer with a release treatment agent on at least one surface, a fluorine-based polymer (eg, polytetrafluoroethylene, polychlorotriethylene). Low adhesive substrates made of fluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, tetrafluoroethylene / hexafluoropropylene copolymer, chlorofluoroethylene / vinylidene fluoride copolymer, etc.) and nonpolar polymers (eg, polyethylene) And a low-adhesive substrate made of an olefin resin such as polypropylene).

  As the release liner, for example, a release liner in which a release treatment layer is formed on at least one surface of the release liner substrate can be suitably used. Such release liner substrates include polyester films (polyethylene terephthalate film, etc.), olefin resin films (polyethylene film, polypropylene film, etc.), polyvinyl chloride films, polyimide films, polyamide films (nylon film), fluorine-based materials. In addition to films (polytetrafluoroethylene film, etc.), plastic base films (synthetic resin film) such as rayon film, and papers (quality paper, Japanese paper, kraft paper, glassine paper, synthetic paper, top coat paper, etc.) These may be laminated (co-extruded) or the like (2 to 3 layer composite).

  On the other hand, the release treatment agent constituting the release treatment layer is not particularly limited, and for example, a silicone release treatment agent, a fluorine release treatment agent, a long-chain alkyl release treatment agent, or 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) containing 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 release treatment agent is cured by addition reaction type cross-linking (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, the polysiloxane polymer forming the main chain or the skeleton includes, for example, polydimethylsiloxane polymer, polydiethylsiloxane polymer, polymethyl In addition to polyalkylalkylsiloxane polymers such as ethylsiloxane polymers, polyalkylarylsiloxane polymers, and copolymers containing a plurality of silicon atom-containing monomer components [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 among them, a polydimethylhydrogensiloxane polymer [for example, poly (dimethylsiloxane-methylsiloxane) and the like] is 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 number of moles (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 present invention, the polysiloxane release treatment agent includes a polydimethylsiloxane polymer having two or more vinyl groups as alkenyl groups in the molecule, and “—Si (R) (H) as a monomer unit in the molecule. A polydimethylsiloxane-based release agent based on a polydimethylhydrogensiloxane-based polymer having two or more “O—” (R is a hydrocarbon group) can be suitably used.

  The polysiloxane release treatment agent has the above-described constituent components (for example, a polydimethylsiloxane 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.

  Examples of such a polysiloxane release treatment agent include a trade name “TPR6600” (manufactured by GE Toshiba Silicone), a trade name “KS-778” (manufactured by Shin-Etsu Chemical), and a trade name “KS-837” (Shin-Etsu). Chemical Co., Ltd.) are commercially available.

  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 substrate and then performing a heating step for drying, curing reaction, or the like. In the heating step for drying or curing reaction, 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 a release liner substrate, and then subjected to an addition reaction type curing reaction in a drying process or a curing reaction process to form a release film. By forming, excellent peeling 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 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 about 0.2 to 1 g / m ² ).

  The thickness of the release liner, the thickness of the release liner substrate, the thickness of the release treatment layer, and the like are not particularly limited, and can be appropriately selected according to the shape of the fiber convex structure.

  In particular, the release liner is used to protect the surface having the fiber convex structure portion of the pressure-sensitive adhesive layer. At this time, when the fiber convex structure portion is not a line-like fiber convex structure portion, as the release liner, Since the fiber convex structure portion is formed on the surface of the pressure-sensitive adhesive layer, peeling having a concave portion (a hole portion, a depressed portion, or the like) in a portion corresponding to the fiber convex structure portion on the surface of the pressure-sensitive adhesive layer A liner can be preferably used, and in particular, as shown in FIG. 1, peeling having a hole (particularly a perforated part) at a portion corresponding to the fiber convex structure on the surface of the pressure-sensitive adhesive layer A liner is preferred. As a release liner having such a hole portion, in order to protect the fibers of the fiber convex structure portion from falling down, at least the thickness of the outer peripheral region of the hole portion (particularly the perforated portion) is the thickness of the fiber convex structure portion. It is preferable that the height is equal to or higher than the height.

  Further, the release liner is used for protecting the surface having the fiber convex structure portion of the pressure-sensitive adhesive layer. At this time, when the fiber convex structure portion is a line-like fiber convex structure portion, as the release liner, Since the surface of the pressure-sensitive adhesive layer has a line-shaped fiber convex structure portion, it may have a shape that can protect only the surface on which the fiber convex structure portion is not formed. Preferably, for example, a plurality of release liners having a shape corresponding to the shape of the pressure-sensitive adhesive layer surface on which the line-shaped fiber convex structure portion is not formed, or a line-shaped fiber convex structure on the surface of the pressure-sensitive adhesive layer A release liner having a line-shaped concave portion (such as a hollow portion or a depressed portion) at a portion corresponding to the portion can be suitably used.

  In addition, as a method of forming the concave portion (particularly, the hole portion or the hollow portion) of the release liner, for example, a well-known or commonly used concave portion forming machine [among others, a convex structure (protruded structure) of various shapes and the convex A method using a punching machine having a concave structure opposite to a part structure], a method using heat or light (for example, a method using a thermal head, a halogen lamp, a xenon lamp, a flash lamp, a laser beam, etc.), a mold (particularly And a method using a molding process using a mold having a convex portion.

(Adhesive tape or sheet)
As the pressure-sensitive adhesive tape or sheet, (1) the pressure-sensitive adhesive layer is formed on both surfaces of the base material as a support, and the width direction on the surface of the pressure-sensitive adhesive layer formed on at least one surface of the base material or A double-sided pressure-sensitive adhesive tape or sheet with a base material partially having a fiber convex structure part at either one of the longitudinal ends, (2) an adhesive layer , Formed on one side of the base material as a support, and partially convex in the part of either one of the width direction or longitudinal direction end portions on the surface of the pressure-sensitive adhesive layer Adhesive tape or sheet with a substrate having a structure (single-sided adhesive tape or sheet), (3) the adhesive layer is at least one of the widthwise or longitudinal ends of one surface Partially fiber-convex structure on one end side The has, and double-sided pressure-sensitive adhesive layer can be exemplified such as one or two double-sided pressure-sensitive adhesive tape or sheet of base material-less type that is protected by a release liner.

  Thus, the pressure-sensitive adhesive tape or sheet may have a form of a pressure-sensitive adhesive tape or sheet in which only one surface is a pressure-sensitive adhesive surface, and has a form of a pressure-sensitive adhesive tape or sheet in which both surfaces are pressure-sensitive adhesive surfaces. It may be. In the case of a double-sided pressure-sensitive adhesive tape or sheet, a fiber convex structure portion may be formed at a predetermined portion of only one side of the pressure-sensitive adhesive surface, and a fiber convex structure portion is formed at a predetermined portion of the double-sided pressure-sensitive adhesive surface. May be.

  Furthermore, as shown in FIG. 2, the pressure-sensitive adhesive tape or sheet may be a pressure-sensitive adhesive tape (rolled body or wound body) wound in a roll shape, and is a single layer or a stacked layer of sheets. It may be an adhesive sheet. FIG. 2 shows a pressure-sensitive adhesive in the form of a roll wound partly having a fiber raised portion at a part on one end side in the width direction on the surface of one pressure-sensitive adhesive layer. It is the schematic which shows a tape (winding body). In FIG. 2, 1a is the adhesive tape of the form wound by the roll shape, 2, 3, 4a, 4b, and 5 are the same as the above. In addition, in FIG. 2, the figure in the circle of a dotted line is a principal part expansion schematic sectional drawing about the adhesive tape 1a.

  In this way, the pressure-sensitive adhesive tape or sheet is located on the surface of the pressure-sensitive adhesive layer on at least one surface of the support, on either side of the widthwise or longitudinal direction of the pressure-sensitive adhesive tape or sheet. In addition, since it has a fiber convex structure partly, among the surfaces on the pressure-sensitive adhesive layer side having the fiber convex structure part on the surface, the fiber convex structure forming end side part (fiber convex structure When the surface of the pressure-sensitive adhesive layer at the part where the part is formed) is bonded to the adherend under a small load, temporary bonding can be performed, and re-sticking or sticking position After correcting the above, it can be firmly bonded by applying a large load. Under the present circumstances, the surface of the adhesive layer in the site | part by the side of the edge part in which the fiber convex structure part is not formed (it may be called "a fiber convex structure part non-formation end part side part") is a fiber convex structure. When the surface of the pressure-sensitive adhesive layer at the part forming end side part is temporarily attached to the adherend, the state is protected with a release liner, and the surface of the pressure-sensitive adhesive layer at the fiber convex structure forming part side part is covered. When strongly adhering to the adherend, the surface of the pressure-sensitive adhesive layer at the fiber convex structure non-formation end side portion is exposed, together with the surface of the pressure-sensitive adhesive layer at the fiber convex structure formation end side portion It is preferable to adhere to the adherend. Of course, after adhering the surface of the pressure-sensitive adhesive layer in the fiber convex structure part forming end side part to the adherend, exposing the surface of the pressure-sensitive adhesive layer in the fiber convex structure part non-forming end part part, It may be adhered to the adherend. The size of the load applied during temporary bonding is not particularly limited, and can be controlled by the height of the fiber convex structure, the thickness of the fiber of the fiber convex structure, the type of material, and the like. 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.

(Manufacturing method of adhesive tape or sheet)
The pressure-sensitive adhesive tape or sheet of the present invention can be produced by forming a fiber convex structure portion at a predetermined site on the surface of the pressure-sensitive adhesive layer on at least one side of the support. For example, by using a flocking method, flocking is performed on the surface of the pressure-sensitive adhesive layer on at least one side of the support, and either one of both ends in the width direction or the longitudinal direction on the surface of the pressure-sensitive adhesive layer. A method for forming a fiber convex structure part in a part on the end side of the fiber or a fiber convex structure transfer forming sheet capable of transferring and forming the fiber convex structure part on the surface of the adhesive layer The fiber convex structure portion is partially transferred to a portion on one end side of either the width direction or the longitudinal direction end portion on the surface of the pressure-sensitive adhesive layer so as to overlap the surface of the pressure-sensitive adhesive layer. Manufacturing a pressure-sensitive adhesive tape or sheet partially having a fiber convex structure part at either one of the width-direction or longitudinal-direction end portions on the surface of the pressure-sensitive adhesive layer by a method or the like. Can do.

More specifically, as a method for producing the pressure-sensitive adhesive tape or sheet of the present invention, the pressure-sensitive adhesive tape or sheet is formed by forming a fiber convex structure portion by any of the following methods (A) or (B). The manufacturing method etc. are mentioned.
(A) A pressure-sensitive adhesive comprising a peeling substrate (sometimes referred to as a “cavity-containing peeling substrate”) having at least one surface as a peeling surface and having a cavity (a hole or a line-like cavity). By applying a flocking process (particularly electrostatic flocking process) to the surface of the pressure-sensitive adhesive layer exposed in the cavity part of the cavity-containing release substrate in a superimposed state on a predetermined part of the surface of the layer, A fiber convex structure is formed on the surface of the pressure-sensitive adhesive layer corresponding to the cavity of the release substrate containing the cavity. (B) The fiber convex structure can be transferred and formed on the surface of the pressure-sensitive adhesive layer. The fiber convex structure transfer forming sheet is superimposed on a predetermined part of the surface of the pressure-sensitive adhesive layer, and the fiber convex structure part is partially transferred to the predetermined part of the surface of the pressure-sensitive adhesive layer, thereby Form a convex structure

In addition, when manufacturing the adhesive tape or sheet | seat which has a line-like fiber convex structure part as an adhesive tape or a sheet | seat, it is adhesive by forming a line-like fiber convex structure part by the method of the following (C). A method of manufacturing a tape or a sheet can also be adopted.
(C) In a state where a plurality of release substrates are overlapped on a predetermined portion of the surface of the pressure-sensitive adhesive layer with a linear interval, between adjacent release substrates or between adjacent release substrates and a release group A line-like fiber convex structure is formed by performing flocking on the surface of the pressure-sensitive adhesive layer exposed in a line between the material and the edge of the pressure-sensitive adhesive layer surface

  As a fiber convex structure transfer forming sheet used in the production method (B) (that 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). Has a function as a release surface for the pressure-sensitive adhesive layer on which the fiber convex structure portion is transferred and formed, and the fiber convex structure portion is provided on the surface of the pressure-sensitive adhesive layer on the release surface side. Examples thereof include a fiber convex structure transfer-forming sheet having a transfer-forming fiber convex structure portion (sometimes referred to as “transfer-forming fiber convex structure portion”) for transfer formation.

  In the said manufacturing method (A) and (C), the fiber convex structure part is directly formed in the predetermined site | part of the adhesive layer in an adhesive tape or a sheet | seat, and the fiber convex structure part is formed. In the method (B), the pressure-sensitive adhesive layer in the pressure-sensitive adhesive tape or sheet is not directly subjected to flocking, but the fiber convex structure portion is transferred to the surface of the pressure-sensitive adhesive layer in the pressure-sensitive adhesive tape or sheet. The fiber convex structure portion is formed on the pressure-sensitive adhesive tape or the adhesive layer in the sheet using the fiber convex structure transfer formation sheet on which the transfer convex fiber convex structure portion is formed.

  In addition, as a fiber convex structure transfer formation sheet used in the manufacturing method (B), a fiber convex structure is transferred to a predetermined portion of the surface of the pressure-sensitive adhesive layer by performing flocking on a predetermined surface. It can be produced by forming a transfer-forming fiber convex structure that can be transferred.

  In the said manufacturing method (A) and (C), the fiber convex structure transfer formation sheet used in the flocking processing method at the time of performing flocking processing to the adhesive layer in an adhesive tape or a sheet, and the said manufacturing method (B) An electrostatic flocking method is particularly suitable as a flocking method such as a flocking method when performing flocking when producing. 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. A processing method that performs 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 planted object (such as the surface of the adhesive layer). Is 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 the above.

  In such production methods (A) to (C) of the pressure-sensitive adhesive tape or sheet, the fiber convex structure portion is formed only at the end side portion of the pressure-sensitive adhesive layer surface on which the fiber convex structure portion is to be formed. As described above, it is important to use a release substrate such as a cavity-containing release substrate or a fiber convex structure transfer forming sheet. For example, in the manufacturing method (A), the cavity-containing release substrate has a width similar to that of the pressure-sensitive adhesive tape or sheet, and a part on the end side of the pressure-sensitive adhesive layer surface on which the fiber convex structure portion is to be formed. A cavity-containing release base material having a cavity at a predetermined position in the above, and a width similar to that of a part on the end side of the pressure-sensitive adhesive layer surface on which a fiber convex structure part is to be formed and A cavity-containing release substrate having a cavity at a location can be used. When using a cavity-containing release substrate having a width similar to that of the end-side portion of the pressure-sensitive adhesive layer surface on which the fiber convex structure portion is to be formed, as the cavity-containing release substrate, FIG. As shown by 1, the site | part of the edge part side of the adhesive layer surface which does not form a fiber convex structure part can be protected using the peeling base material which does not have a cavity part.

  In this way, when a cavity-containing release substrate is used, a fiber convex structure is formed at a site corresponding to a cavity (such as a hole or a line-like cavity) formed in the cavity-containing release substrate. can do. Specifically, the cavity of the cavity-containing release substrate with the release surface of the cavity-containing release substrate having a predetermined width superimposed on a predetermined site on the surface of the pressure-sensitive adhesive layer of the adhesive tape or sheet Forming a fiber convex structure by applying flocking (especially electrostatic flocking) to the surface portion of the pressure-sensitive adhesive layer exposed at the part (hole, line-shaped cavity, etc.) Can do. Therefore, as the cavity-containing release substrate, a release substrate having a cavity at a position corresponding to a portion where the fiber convex structure portion is formed on the surface of the adhesive layer of the adhesive tape or sheet is used. is important.

  Moreover, in the said manufacturing method (C), the peeling base material which can be piled up on the surface of an adhesive layer at intervals of a line form is used. As the release substrate, for example, a plurality of release substrates having at least one surface as a release surface and having a predetermined shape (sometimes referred to as “space-part forming release substrate”) can be used. . As the peeling base material for forming the space portion, the portion on the end side of the pressure-sensitive adhesive layer surface on which the fiber convex structure portion is to be formed has the same shape as the portion where the fiber convex structure portion is not formed. A release substrate can be used. At this time, the part on the end side of the pressure-sensitive adhesive layer surface that does not form the fiber convex structure part can be protected by using a release substrate having the same shape as the part.

  As described above, when a plurality of space part forming release base materials are used, between the adjacent space part forming base materials among the plurality of space part forming base materials or between the peeling base material and the pressure-sensitive adhesive layer surface. A line-shaped fiber convex structure part can be formed in the line-shaped space part between the parts. Specifically, in the state where a plurality of space forming release base materials are overlapped on the surface of the pressure-sensitive adhesive layer in the pressure-sensitive adhesive tape or sheet with a plurality of line-shaped predetermined intervals, the adjacent space portion forming release bases are overlapped. Applying a flocking process (especially electrostatic flocking process) to the part of the surface of the pressure-sensitive adhesive layer that is exposed in a line between the materials and between the peeling substrate for forming the space and the edge of the pressure-sensitive adhesive layer surface By applying, a line-like fiber convex structure part can be formed. Therefore, it is important to use a plurality of release substrates having a shape corresponding to a portion where the line-like fiber convex structure portion is not formed on the surface of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape or sheet as the space portion-forming release substrate. .

(Peeling substrate)
Thus, in the said manufacturing method (A) and (C), the peeling base material (cavity part containing peeling base material and peeling part for space part formation) used when performing a flocking process directly to the adhesive layer surface is used. It is important that at least one surface (one surface or both surfaces) is a release surface with respect to the adhesive surface. In addition, in the said peeling base material, in the case of a cavity part containing peeling base material, it is important to have a cavity part (a hole part, a line-shaped cavity part, etc.) further. On the other hand, in the case of the peeling base material for forming a space part, it is important to further have a shape that can be superimposed on the surface of the pressure-sensitive adhesive layer with a linear interval. In addition, as a peeling base material, it is important to use so that a peeling surface may contact the adhesive layer which flocks. Therefore, as a peeling base material, the surface on the side not in contact with the pressure-sensitive adhesive layer may be either a peeling surface or a non-peeling surface.

  Examples of such a release substrate include, in addition to a substrate having a release treatment layer with a release treatment agent on at least one surface, a fluorine-based polymer (eg, polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinyl fluoride). , Low-adhesive substrates made of polyvinylidene fluoride, tetrafluoroethylene / hexafluoropropylene copolymer, chlorofluoroethylene / vinylidene fluoride copolymer, etc., and nonpolar polymers (eg, olefins such as polyethylene and polypropylene) And a low-adhesive substrate made of a resin or the like.

  As a peeling base material, it is preferable that it is comprised with the peeling base material in which the peeling process layer is formed in the at least one surface of a base material, for example. Examples of such base materials include polyester films (polyethylene terephthalate films, etc.), olefin resin films (polyethylene films, polypropylene films, etc.), polyvinyl chloride films, polyimide films, polyamide films (nylon films), fluorine films (polyethylene films). In addition to plastic base materials (synthetic resin base materials) such as tetrafluoroethylene film) and rayon film, and papers (quality paper, Japanese paper, kraft paper, glassine paper, synthetic paper, top coat paper, etc.) , Laminated layers or coextruded layers (2 to 3 layer composites).

  On the other hand, the release treatment agent constituting the release treatment layer is not particularly limited, and for example, a silicone release treatment agent, a fluorine release treatment agent, a long-chain alkyl release treatment agent, or 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) containing 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 release treatment agent is cured by addition reaction type cross-linking (curing reaction) to form a peelable film, and can exhibit useful release characteristics. Examples of the addition reaction type polysiloxane release treatment agent include addition reaction type polysiloxane release treatment agents exemplified as silicone release treatment agents in the pressure-sensitive adhesive tape or sheet release liner [that is, an alkenyl group in the molecule. A polysiloxane polymer having two or more (groups reactive to a group having a Si-H bond) and two or more hydrogen atoms bonded to silicon atoms in the molecule; The same as the polysiloxane-based release treatment composition containing a polysiloxane-based polymer (in particular, a polysiloxane-based polymer having two or more silicon atoms having Si—H bonds in the molecule) Is mentioned.

  The amount of polysiloxane polymer having two or more Si-H bonded silicon atoms in the molecule is not particularly limited, but may be selected from the same range as in the case of the pressure-sensitive adhesive tape or sheet release liner. . Also, a polysiloxane polymer having two or more alkenyl groups in the molecule is cured by a polysiloxane polymer (crosslinking agent) having two or more silicon atoms having Si-H bonds in the molecule. When performing, a catalyst can be used as in the case of the pressure-sensitive adhesive tape or sheet release liner, and the amount used is not particularly limited and is the same as in the case of the pressure-sensitive adhesive tape or sheet release liner. It can be selected from the range of usage.

  In addition, as the polysiloxane release treatment agent, as in the case of the pressure-sensitive adhesive tape or release liner for sheets, a polydimethylsiloxane polymer having two or more vinyl groups as alkenyl groups in the molecule, A polydimethylsiloxane release agent comprising a polydimethylhydrogensiloxane polymer having two or more “—Si (R) (H) O—” (R is a hydrocarbon group) as a monomer unit is preferably used. be able to.

  The polysiloxane release treatment agent can be prepared in the same manner as in the case of the pressure-sensitive adhesive tape or sheet release liner. 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 treatment agent, a commercially available product similar to the case of the pressure-sensitive adhesive tape or the release liner for sheets can be used.

  The release treatment layer in the release substrate (such as the cavity-containing release substrate or the space-forming release substrate) can be formed in the same manner as in the case of the pressure-sensitive adhesive tape or sheet release liner, As in the case of the pressure-sensitive adhesive tape or sheet release liner, a known or conventional heating method (for example, a method using a hot air dryer) can be used. Moreover, it is important that the release treatment agent is applied in an appropriate application amount, and the application amount is the same as in the case of the pressure-sensitive adhesive tape or the release liner for sheets. If the coating amount of the release treatment agent is too small, the peeling force (force required for peeling) becomes large, causing a problem in practical use. On the other hand, if it is too much, the cost increases and it becomes economically disadvantageous.

  In addition, the thickness of a peeling base material, the thickness of a base material, the thickness of a peeling process layer, etc. are not restrict | limited in particular, According to the shape of a fiber convex structure part, etc., it can select suitably.

  Among the release substrates, the cavity-containing release substrate has a cavity such as a hole or a line-shaped cavity. Since such a cavity is used when partially forming the fiber convex structure on the surface of the pressure-sensitive adhesive layer, it is provided at a site corresponding to the fiber convex structure formed on the surface of the pressure-sensitive adhesive layer. It is important that Therefore, depending on the position at which the cavity portion of the cavity-containing release substrate is formed, the size and number of the cavity portions, the position at which the fiber convex structure portion is formed on the pressure-sensitive adhesive layer surface, the size of the fiber convex structure portion, You can control the number.

  As a method of forming the cavity of the release substrate containing the cavity, a formation method similar to that of the concave portion in the pressure-sensitive adhesive tape or release liner for sheets, for example, a known or conventional hole forming machine [in particular, various shapes A perforating process using a convex structure (protruding structure) and a concave structure opposite to the convex structure], a perforating process using heat or light (for example, a thermal head, a halogen lamp, For example, a method of drilling with a xenon lamp, a flash lamp, a laser beam, or the like) and a molding method using a mold (for example, a mold having a convex portion). In the perforation processing method (perforation processing method using a hole forming machine, perforation processing method using heat or light, etc.), a cavity is obtained by perforating a release substrate that does not have a cavity. A release substrate such as a known release liner as described above can be used as the release substrate that has produced the part-containing release substrate and does not have a cavity.

  On the other hand, among the release substrates, the release portion forming space part is used with a linear interval. The line-shaped space between the adjacent peeling base materials for forming the space part or between the peeling base material and the end of the pressure-sensitive adhesive layer surface has a linear fiber convex structure on the surface of the pressure-sensitive adhesive layer. Therefore, it is necessary to use a plurality of space-parting release substrates so that the part corresponding to the line-shaped fiber convex structure part formed on the surface of the pressure-sensitive adhesive layer becomes a space part. is important. Therefore, the position of the linear space between the adjacent release parts for forming the space part on the surface of the pressure-sensitive adhesive layer, the edge of the surface of the pressure-sensitive adhesive layer and the surface of the pressure-sensitive adhesive layer, and the size of the line-shaped space part. The position and the number of the line-shaped fiber convex structure portions on the surface of the pressure-sensitive adhesive layer and the size and number of the line-shaped fiber convex structure portions can be controlled by the thickness and the number.

  Such a release substrate (such as a cavity-containing release substrate or a space-forming release substrate) may be peeled off after forming the fiber convex structure, but as it is, a release liner (adhesive) It is preferably used as a tape or sheet release liner. Therefore, as the release substrate, a release liner, particularly a release liner (release film) in which the release liner substrate is a plastic substrate is suitable.

  Furthermore, in the manufacturing method (B), a fiber convex structure transfer forming sheet is used. The fiber convex structure transfer sheet has the same width as that of the pressure-sensitive adhesive tape or sheet, and is located on either side of the pressure-sensitive adhesive layer surface (both ends in the width direction or longitudinal direction on the surface of the pressure-sensitive adhesive layer). The fiber convex structure for transfer formation so that the fiber convex structure portion can be formed at a predetermined position where the fiber convex structure portion is to be formed in the end portion of any one of the portions). The fiber convex structure transfer forming sheet having a portion and the same width as the end portion side portion of the pressure-sensitive adhesive layer surface on which the fiber convex structure portion is to be formed, and the fiber convex structure portion A fiber convex structure transfer forming sheet having a transfer convex fiber convex structure portion or the like can be used so that the fiber convex structure portion can be formed at a predetermined place where the fiber is to be formed. . In addition, as the fiber convex structure transfer forming sheet, a fiber convex structure transfer forming sheet having the same width as the end side portion of the pressure-sensitive adhesive layer surface on which the fiber convex structure portion is to be formed. When using, the site | part by the side of the edge part of the adhesive layer surface which does not form a fiber convex structure part can be protected using the peeling base material which has the same shape as this site | part.

  Such a fiber convex structure transfer forming sheet is not particularly limited as long as it has a configuration in which the fiber convex structure portion is transferred by being bonded to the surface of the pressure-sensitive adhesive layer. This surface has a function as a release surface for the pressure-sensitive adhesive layer to which the fiber convex structure portion is transferred and formed, and the fiber convex structure portion is transferred and formed on the surface of the pressure-sensitive adhesive layer on the release surface side. A fiber convex structure transfer forming sheet having a structure having the transfer convex fiber convex structure portion can be used. In this way, when the fiber convex structure transfer forming sheet is used, the fiber convex structure portion is formed at a site corresponding to the transfer convex fiber convex structure portion formed on the fiber convex structure transfer forming sheet. Can do. Specifically, as shown in FIG. 3, the fiber convex shape for transfer formation is formed by pressure bonding or the like by superposing the release surface of the fiber convex structure transfer forming sheet on the surface of the adhesive layer of the adhesive tape or sheet. By transferring the structure part, a fiber convex structure part can be formed. Accordingly, the fiber convex structure transfer forming sheet has a transfer convex fiber convex structure portion at a position corresponding to a portion where the fiber convex structure portion is formed on the surface of the pressure-sensitive adhesive tape or the adhesive layer of the sheet. It is important to use the fiber convex structure transfer forming sheet.

  FIG. 3 partially shows an example of a state where the fiber convex structure transfer sheet in the present invention is bonded to the surface of the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer of the sheet to transfer and form the fiber convex structure portion. FIG. 3A is a schematic cross-sectional view, and FIG. 3A shows a state where a fiber convex structure transfer forming sheet is bonded to the surface of an adhesive tape or an adhesive layer of the sheet, and FIG. 3B shows a fiber convex structure. It shows a state in which the transfer-forming sheet is peeled off after being bonded and the fiber convex structure is transferred and formed on the surface of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape or sheet. In FIG. 3, 6 is a fiber convex structure transfer forming sheet, 6a is a release liner (fiber convex structure transfer forming sheet release liner) in the fiber convex structure transfer forming sheet 6, and 6a1 is a fiber convex structure transfer. Holes in the release liner 6a for forming sheet, 6b is the pressure-sensitive adhesive layer (fiber-convex structure transfer holding pressure-sensitive adhesive layer) in the fiber convex structure transfer forming sheet 6, and 6c is the fiber convex structure transfer forming sheet 6. (A substrate for a fiber convex structure transfer forming sheet), 7 is a release liner, 8 is a fiber raised portion for transfer formation to an adhesive tape or an adhesive layer for a sheet, 9 is an adhesive tape or sheet, 9a Is an adhesive layer (adhesive tape or adhesive layer for sheet) in the adhesive tape or sheet 9, 9a1 is the surface of the adhesive layer 9a for adhesive tape or sheet, and 9b is an adhesive tape or sheet A; (simply referred to as "substrate" pressure-sensitive adhesive tape or sheet substrate) substrate in.

  The fiber convex structure transfer forming sheet 6 has a fiber convex structure-holding adhesive layer 6b for transfer formation formed on one side of a fiber convex structure transfer forming sheet substrate 6c, and the transfer convex fiber convex structure. The release liner 6a for the fiber convex structure transfer forming sheet having the hole 6a1 is laminated on the part holding adhesive layer 6b, and the transfer in the hole 6a1 in the release liner 6a for the fiber convex structure transfer forming sheet is laminated. On the surface of the forming fiber convex structure holding pressure-sensitive adhesive layer 6b, there are formed fiber raised portions 8 for transfer formation to the pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer 9a. On the other hand, the pressure-sensitive adhesive tape or sheet 9 has a pressure-sensitive adhesive tape or sheet adhesive layer 9a formed on one side of a pressure-sensitive adhesive tape or sheet substrate 9b as a support. Then, as shown in FIG. 3A, the fiber convex structure transfer forming sheet 6 is formed on the pressure-sensitive adhesive layer surface on the end side of the pressure-sensitive adhesive layer in the pressure-sensitive adhesive tape or sheet 9. The fiber raised portion 8 is transferred to the surface 9a1 of the portion on either side of the surface of the pressure-sensitive adhesive tape 9a or the surface of the pressure-sensitive adhesive layer 9a for the sheet. Can do.

(Fiber convex structure transfer sheet)
Thus, in the said manufacturing method (B), as a fiber convex structure transfer formation sheet used when transferring a fiber convex structure part, at least one surface is a peeling surface with respect to an adhesion surface. Furthermore, it is important that the release surface side has a transfer-forming fiber convex structure portion for transferring and forming the fiber convex structure portion on the pressure-sensitive adhesive layer surface. 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, the method for forming the fiber-formed convex structure portion for transfer formation (particularly the fiber raising portion for transfer formation) on the fiber-convex structure transfer forming sheet is not particularly limited, but as described above, flocking processing A method (particularly, electrostatic flocking method) can be preferably used. As the electrostatic flocking processing method, any of an up method, a down method, and a side method may be used.

  Examples of the fiber convex structure transfer forming sheet include a fiber convex structure transfer forming sheet having a structure having a transfer convex fiber convex structure portion on one surface side. As the fiber convex structure transfer forming sheet, (1) both surfaces of a base material as a support are release surfaces, and at least one release surface side has a transfer convex fiber convex structure portion. (2) A structure in which one side of a base material as a support is a release surface, and a transfer-formed fiber convex structure portion is provided on the release surface side. Examples of the fiber convex structure transfer forming sheet can be exemplified. 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 (1) is fiber convex shape for transfer formation on both sides or one side. The surface on which the transfer-forming fiber convex structure portion can be formed has a peeling surface partially exposed, and the surface on which the transfer-forming fiber convex structure portion is not formed is The entire surface is a release surface. Further, the fiber convex structure transfer forming sheet having the constitution (2) has a fiber convex structure for transfer formation only on one side, and the other side is the surface of the substrate or another layer (adhesive) Layer). When the fiber convex structure transfer sheet having the structure of (1) or (2) has the same width as that of the pressure-sensitive adhesive tape or sheet, a part on either end side of the pressure-sensitive adhesive layer surface In order to be able to form the fiber convex structure portion at a predetermined location where the fiber convex structure portion is to be formed, the fiber convex structure portion for transfer formation is provided. The fiber convex structure portion may be formed at a predetermined position where the fiber convex structure portion is to be formed, when having the same width as the end portion side portion of the pressure-sensitive adhesive layer surface. In order to be able to, it has the convex structure part for transfer formation. In the present invention, as the fiber convex structure transfer forming sheet, the fiber convex structure transfer formation having the same width as the end side portion of the pressure-sensitive adhesive layer surface on which the fiber convex structure portion is to be formed. Sheets are preferably used. In addition, the fiber convex structure transfer forming sheet having the above-described configuration (1) or (2) has the same width as the pressure-sensitive adhesive tape or sheet, or the pressure-sensitive adhesive layer surface on which the fiber convex structure portion is to be formed. Cut the fiber convex structure transfer forming sheet having a width wider than the same width as the end side portion of the sheet, so as to have a predetermined width, the same width as the pressure-sensitive adhesive tape or sheet, or the fiber convex shape It may be a fiber convex structure transfer forming sheet whose width is adjusted so as to have the same width as the end portion side portion of the pressure-sensitive adhesive layer surface on which the structure portion is to be formed.

  As such a fiber convex structure transfer forming sheet, in particular, a concave portion is formed on the release surface side, and the convex portion of the structure having a convex convex fiber structure portion in the concave portion. In particular, a sheet for forming a structure-like transfer is suitable, and in particular, it has a lower adhesiveness than the pressure-sensitive adhesive layer for transferring and forming a fiber-like structure at the bottom of the recess on the release surface side, and a fiber-like structure for transfer forming A fiber-convex structure transfer forming sheet having a structure having a transfer-forming fiber-convex structure holding adhesive layer that holds the portion can be suitably used. Thus, by using an adhesive layer having lower adhesiveness than the adhesive layer for transferring and forming the fiber convex structure portion as the adhesive layer for holding the fiber convex structure portion for transfer formation, the fiber for transfer formation is used. The convex structure portion can be easily transferred to various pressure-sensitive adhesive layers. Note that the transfer forming fiber convex structure holding adhesive layer is not formed on the bottom of the concave portion on the peeling surface side, and a peeling treatment layer may be formed.

  Specifically, as the fiber convex structure transfer forming sheet, (a) as shown in FIG. 4, the substrate and the transfer convex fiber convex structure provided on the substrate are held. The adhesive layer and the release substrate having a cavity provided on the transfer-forming fiber convex structure holding adhesive layer, and the transfer-forming fiber convex structure portion of the release substrate A fiber convex structure transfer forming sheet (“fiber convex structure transfer forming sheet (a)”) having a configuration formed in the cavity (concave portion) and on the surface of the transfer forming fiber convex structure holding adhesive layer (B) As shown in FIG. 5, a base material having a concavo-convex structure, a release treatment layer formed on the convex portion of the base material, and a bottom surface of the concave portion of the base material The transfer-forming fiber convex structure holding adhesive layer is formed with the transfer-forming fiber. A fiber convex structure transfer forming sheet ("fiber convex structure transfer forming sheet" in which the convex structure portion is formed in the concave portion of the base material and on the surface of the transfer forming fiber convex structure holding adhesive layer. (B) may be referred to).

  In addition, as a sheet | seat for fiber convex structure transcription | transfer formation, when transferring a line-like fiber convex structure part to the adhesive layer of an adhesive tape or a sheet | seat, (c) As shown in FIG. A plurality of transfer-formed fiber convex structure holding adhesive layers provided on the base material, and a plurality of transfer-formed fiber convex structure holding adhesive layers provided on the base material with a linear interval Are formed in a linear space portion (concave portion) between adjacent release substrates and the transfer convex fiber convex structure portion. A fiber convex structure transfer forming sheet having a configuration formed on the surface of the holding adhesive layer (may be referred to as “fiber convex structure transfer forming sheet (c)”) may also be used.

  FIG. 4 is a schematic view partially showing an example of a fiber convex structure transfer forming sheet in the present invention, and FIG. 4 (a) is a schematic plan view seen from the upper surface of the fiber convex structure transfer forming sheet. 4 (b) is a schematic sectional view taken along line XY in FIG. 4 (a). In FIG. 4, 10 is a fiber convex structure transfer forming sheet [fiber convex structure transfer forming sheet (a)], and 10a is a release liner (fiber convex structure transfer forming sheet 10). Sheet release liner), 10b is an adhesive layer in the fiber convex structure transfer forming sheet 10 (transfer convex fiber convex structure holding adhesive layer), and 10c is a substrate (fiber) in the fiber convex structure transfer forming sheet 10 (Base material for convex structure transfer forming sheet) 10d is a cavity in the release liner 10a for fiber convex structure transfer forming sheet, and 11 is a fiber raising portion for transfer forming to the adhesive layer. The fiber convex structure transfer forming sheet 10 includes a transfer convex fiber convex structure holding adhesive layer 10b formed on a fiber convex structure transfer forming sheet base material 10c, and the transfer forming fiber. A release liner 10a for a fiber convex structure transfer forming sheet is bonded to the convex structure holding adhesive layer 10b, and the transfer liner 10a in the cavity 10d of the release liner 10a for fiber convex structure transfer formation is bonded. On the surface of the fiber convex structure holding pressure-sensitive adhesive layer 10b, there are formed fiber raised portions 11 for transfer formation to the pressure-sensitive adhesive layer.

  FIG. 5 is a schematic view partially showing an example of a fiber convex structure transfer forming sheet according to the present invention, and FIG. 5A is a schematic plan view seen from the upper surface of the fiber convex structure transfer forming sheet. FIG. 5B is a schematic cross-sectional view taken along line XY in FIG. In FIG. 5, 12 is a fiber convex structure transfer forming sheet [fiber convex structure transfer forming sheet (b)], and 12a is a substrate having an uneven structure (an uneven portion containing fiber convex structure transfer forming sheet base). Material), 12a1 is a convex portion of the substrate 12a for concave-convex portion-containing fiber convex structure transfer forming sheet, 12a2 is a concave portion of the base material 12a for concave-convex portion-containing fiber convex structure transfer forming sheet, and 12b is a concave-convex portion-containing fiber. The release treatment layer formed on the convex portion 12a1 of the convex structure transfer forming sheet substrate 12a, 12c is the transfer formed on the bottom surface of the concave portion 12a2 of the concave-convex-containing fiber convex structure transfer forming sheet substrate 12a. The forming fiber convex structure holding pressure-sensitive adhesive layer 13 is a fiber raised portion for transferring and forming the pressure-sensitive adhesive layer. The fiber convex structure transfer forming sheet 12 is provided with a peeling treatment layer 12b formed on the convex portion 12a1 of the concave-convex portion-containing fiber convex structure transfer forming sheet base 12a, and on the bottom surface of the concave portion 12a2. A fiber convex structure holding adhesive layer 12c is formed, and a fiber raised portion 13 for transferring and forming the adhesive convex layer is formed on the surface of the transfer forming fiber convex structure holding adhesive layer 12c in the recess 12a2. Has been.

  FIG. 6 is a schematic view partially showing an example of a fiber convex structure transfer forming sheet according to the present invention, and FIG. 6A is a schematic plan view seen from the upper surface of the fiber convex structure transfer forming sheet. 6 (b) is a schematic sectional view taken along line XY in FIG. 6 (a). In FIG. 6, 14 is a fiber convex structure transfer forming sheet [fiber convex structure transfer forming sheet (c)], 14a is a release liner (fiber convex structure transfer forming sheet 14). A release liner for the sheet), 14b is an adhesive layer in the fiber convex structure transfer forming sheet 14 (a fiber convex structure holding adhesive layer for transfer formation), and 14c is a substrate (fiber) in the fiber convex structure transfer forming sheet 14 Convex structure transfer forming sheet substrate), 14d is a line-shaped space between adjacent fiber convex structure transfer forming sheet release liners 14a, and 15 is a line fiber for transfer forming on the adhesive layer. It is a raised part. The fiber convex structure transfer forming sheet 14 includes a transfer convex fiber convex structure holding adhesive layer 14b formed on a fiber convex structure transfer forming sheet substrate 14c, and the transfer forming fiber. On the convex structure holding adhesive layer 14b, a plurality of release liners 14a for the fiber convex structure transfer forming sheet are bonded at intervals of a line, and the release liner 14a for the fiber convex structure transfer forming sheet is bonded. On the surface of the transfer forming fiber convex structure holding pressure-sensitive adhesive layer 14b in the line-shaped space portion 14d therebetween, a line-shaped fiber raised portion 15 for transfer formation to the pressure-sensitive adhesive layer is formed.

  Specifically, the fiber convex structure transfer sheet (a) having the configuration (a) and the fiber convex structure transfer sheet (c) having the configuration (c) are shown in FIGS. 4 and 6. As described above, a base material (a base material for a fiber convex structure transfer forming sheet), a transfer convex fiber convex structure holding adhesive layer provided on the base material, and the transfer convex fiber convex The release liner (release liner for the fiber convex structure transfer forming sheet) provided on the shape-structure-holding adhesive layer, and the adjacent fiber in the recess by the cavity in the release liner for the fiber convex structure transfer forming sheet Convex structure transfer convex fiber formed in the concave part by the line-shaped space between the release liner for convex structure transfer forming sheet and on the surface of the transfer convexity convex fiber structure holding adhesive layer ing. In such a fiber convex structure transfer forming sheet (a) or fiber convex structure transfer forming sheet (c), the fiber convex structure transfer forming sheet base material is a plastic film or sheet plastic. Base materials: Metal base materials such as metal foil and metal plates; Paper base materials such as paper (quality paper, Japanese paper, craft paper, glassine paper, synthetic paper, top coat paper, etc.); cloth, non-woven fabric, net, etc. Appropriate thin leaves such as a fiber base material; a rubber base material such as a rubber sheet; and a foam material such as a foam 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), wholly aromatic polyamide (aramid); polyimide resins; polyether ether ketone (PEEK); fluorine resins such as polytetrafluoroethylene; rayon. 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.

  Physical treatment such as corona treatment or plasma treatment on one or both sides of the fiber convex structure transfer forming sheet substrate for the purpose of improving the adhesion with the fiber convex structure holding adhesive layer for transfer formation, etc. Further, an appropriate surface treatment such as a chemical treatment such as a primer may be performed.

  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) and the said fiber convex structure transfer formation sheet (c), a fiber convex structure part is transcribe | transferred as a fiber convex structure part holding adhesive layer for transfer formation. It is important that the adhesiveness (adhesive strength) is lower than the pressure-sensitive adhesive layer to be formed (such as a pressure-sensitive adhesive tape or a pressure-sensitive adhesive layer for a sheet). Here, the adhesiveness of the fiber convex structure holding adhesive layer for transfer formation is lower than the pressure-sensitive adhesive layer for transferring and forming the fiber convex structure portion. It means that the force is smaller than the adhesive force of the pressure-sensitive adhesive layer. More specifically, the pressure-sensitive adhesive tape or sheet having each pressure-sensitive adhesive layer was adhered to a stainless steel plate by reciprocating once with a 2 kg roller in a 23 ° C. atmosphere, left at 23 ° C. for 30 minutes, and then cooled to 23 ° C. It can be compared by measuring the adhesive force when the adhesive tape or sheet is peeled from the stainless steel plate under the conditions of 180 ° peeling and a tensile speed of 300 mm / min in an atmosphere of × 65% RH. In the present invention, the adhesive force of the transfer convex fiber convex structure holding pressure-sensitive adhesive layer measured under the above-described conditions should be smaller than the adhesive strength of the pressure-sensitive adhesive layer that transfers and forms the convex fiber convex structure portion. From the viewpoint of transferability of the fiber convex structure portion, the difference in adhesive strength between the two is preferably 0.1 N / 20 mm or more (preferably 0.5 N / 20 mm or more). As such a fiber convex structure holding pressure-sensitive adhesive layer for transfer formation, there is no particular limitation as long as it can exhibit lower adhesiveness than the pressure-sensitive adhesive layer for transferring and forming the fiber convex structure portion. The pressure-sensitive adhesive can be appropriately selected from the above, and for example, it may be composed of the same pressure-sensitive adhesive as the pressure-sensitive adhesive that constitutes the pressure-sensitive adhesive layer for transferring and forming the fiber convex structure portion. Therefore, the pressure-sensitive adhesive constituting the transfer-forming fiber convex structure holding pressure-sensitive adhesive layer can be appropriately selected according to the type of pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer such as pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer. .

  Specifically, examples of the pressure-sensitive adhesive constituting the transfer-forming fiber convex structure holding pressure-sensitive adhesive layer include a rubber-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, a polyester-based pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, and a polyamide-based pressure-sensitive adhesive. In addition to epoxy-based adhesives, vinyl alkyl ether-based adhesives, silicone-based adhesives, fluorine-based adhesives, hot-melt adhesives and the like can be mentioned. The pressure-sensitive adhesive may be used alone or in combination of two or more. Further, the pressure-sensitive adhesive may be any form 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 the adhesive component (base polymer), the pressure-sensitive adhesive includes a crosslinking agent (for example, a polyisocyanate-based crosslinking agent, an alkyl etherified melamine compound-based crosslinking agent) depending on the type of the pressure-sensitive adhesive. Etc.), 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.

  It is also important that the transfer-forming fiber convex structure holding adhesive layer is an adhesive layer capable of holding the transfer-forming fiber convex structure.

  As a method for forming the transfer convex fiber convex structure holding pressure-sensitive adhesive layer, a known or conventional pressure-sensitive adhesive layer forming method can be employed.For example, on the fiber convex structure transfer forming sheet base material, A method of applying an adhesive (application method), an adhesive is applied to a release film such as a release liner to form an adhesive layer, and then the adhesive layer is formed into a substrate for a fiber convex structure transfer forming sheet. Examples thereof include a method of transferring upward (transfer method).

  The thickness of the transfer-forming fiber convex structure holding adhesive 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) and the fiber convex structure transfer forming sheet (c), at least one surface is peeled off as the fiber convex structure transfer forming sheet release liner. The peeling base material used as the surface can be used. Thus, it is important that the release liner for a fiber convex structure transfer forming sheet has at least a release surface on the side to be bonded to the pressure-sensitive adhesive layer. Accordingly, as the release liner for the fiber convex structure transfer forming sheet, the surface on the transfer convex fiber convex structure holding adhesive layer side may not be a release surface. In addition, in the release liner for the fiber convex structure transfer forming sheet, when the surface on the fiber convex structure holding adhesive layer side for transfer formation is not a release surface, the fiber convex structure transfer forming sheet (a) or The fiber convex structure transfer sheet (c) itself can be used as a release liner.

  More specifically, as a release liner for a fiber convex structure transfer forming sheet, for example, a substrate (release liner substrate 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 release liner substrate for transfer forming sheet can be suitably used. As such a release liner substrate 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) ), Fluorine film (polytetrafluoroethylene film, etc.), plastic base film (synthetic resin film) such as rayon film, and papers (quality paper, Japanese paper, kraft paper, glassine paper, synthetic paper, top coat paper) Etc.), and those obtained by laminating them by lamination, coextrusion, etc. (2 to 3 layer composites).

  On the other hand, the release treatment agent constituting the release treatment layer is not particularly limited, and for example, a silicone release treatment agent, a fluorine release treatment agent, a long-chain alkyl release treatment agent, or 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) containing 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 release treatment agent is cured by addition reaction type cross-linking (curing reaction) to form a peelable film, and can exhibit useful release characteristics.

  The addition reaction type polysiloxane release treatment agent is an addition reaction type polysiloxane exemplified as a silicone release treatment agent in the pressure-sensitive adhesive tape or release liner for sheets (release liner to be bonded to the pressure-sensitive adhesive layer in the pressure-sensitive adhesive tape or sheet). Siloxane release treatment agent [that is, a polysiloxane polymer having two or more alkenyl groups (groups having reactivity with a group having Si-H bond) in the molecule, and a silicon atom in the molecule And a polysiloxane polymer having two or more hydrogen atoms bonded to (particularly, a polysiloxane polymer having two or more silicon atoms having Si-H bonds in the molecule). And the like as the polysiloxane-based release treatment composition].

  The amount of polysiloxane polymer having two or more Si-H bonded silicon atoms in the molecule is not particularly limited, but may be selected from the same range as in the case of the pressure-sensitive adhesive tape or sheet release liner. . Also, a polysiloxane polymer having two or more alkenyl groups in the molecule is cured by a polysiloxane polymer (crosslinking agent) having two or more silicon atoms having Si-H bonds in the molecule. When performing, a catalyst can be used as in the case of the pressure-sensitive adhesive tape or sheet release liner, and the amount used is not particularly limited and is the same as in the case of the pressure-sensitive adhesive tape or sheet release liner. It can be selected from the range of usage.

  In addition, as the polysiloxane release treatment agent, as in the case of the pressure-sensitive adhesive tape or release liner for sheets, a polydimethylsiloxane polymer having two or more vinyl groups as alkenyl groups in the molecule, A polydimethylsiloxane release agent comprising a polydimethylhydrogensiloxane polymer having two or more “—Si (R) (H) O—” (R is a hydrocarbon group) as a monomer unit is preferably used. be able to.

  The polysiloxane release treatment agent can be prepared in the same manner as in the case of the pressure-sensitive adhesive tape or sheet release liner. 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 treatment agent, a commercially available product similar to the case of the pressure-sensitive adhesive tape or the release liner for sheets can be used.

  The release treatment layer in the release liner for the fiber convex structure transfer forming sheet can be formed in the same manner as in the case of the pressure-sensitive adhesive tape or sheet release liner. In this case, in the case of the pressure-sensitive adhesive tape or sheet release liner Similarly to the above, a known or conventional heating method (for example, a method using a hot air dryer) can be used. Moreover, it is important that the release treatment agent is applied in an appropriate application amount, and the application amount is the same as in the case of the pressure-sensitive adhesive tape or the release liner for sheets. If the coating amount of the release treatment agent is too small, the peeling force (force required for peeling) becomes large, causing a problem in practical use. On the other hand, if it is too much, the cost increases and it becomes economically disadvantageous.

  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 fiber convex structure portion for transfer formation is within the cavity of the release liner for the fiber convex structure transfer forming sheet and the fiber convex structure portion for transfer formation. It is formed on the surface of the holding adhesive layer. Therefore, as the release liner for the fiber convex structure transfer forming sheet, from the viewpoint of transferability of the fiber convex structure for transfer formation, the release portion of the cavity formed in the release liner for the fiber convex structure transfer formation sheet is used. It is preferable that the thickness of the outer peripheral region is approximately the same as or higher than the height of the transfer-forming fiber convex structure.

  In the fiber convex structure transfer forming sheet (a), as a method of forming the cavity of the fiber convex structure transfer forming sheet release liner, the adhesive tape or the recess in the sheet release liner may be used. , A formation method similar to the case of the cavity in the cavity-containing release substrate, for example, a well-known or commonly used hole forming machine [among others, a convex structure (projection structure) of various shapes, and the convex structure Punching method using a punching machine having a concave structure opposite to the above, punching method by heat or light (for example, punching by thermal head, halogen lamp, xenon lamp, flash lamp, laser beam, etc.), gold Examples thereof include a molding method using a mold (for example, a mold having a convex portion). In addition, in the drilling method (a drilling method using a hole forming machine, a punching method using heat or light, etc.), a cavity is formed by performing a drilling process on a release liner that does not have a cavity. A release liner for a fiber convex structure transfer forming sheet is prepared, and a release substrate such as a known release liner as described above can be used as a release liner having no cavity. .

  In the release liner for a fiber convex structure transfer forming sheet, it is important that the part forming the cavity is a part corresponding to the fiber convex structure part to be partially transferred and formed on the surface of the adhesive layer. is there.

  As described above, the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (c) has a fiber convex structure portion for transfer convex formation as described above. It is formed on the surface of the pressure-sensitive adhesive layer holding the fiber convex structure for transfer formation in the cavity in the release liner for sheet, or in the concave portion by the line-shaped space between the release liners for the fiber convex structure transfer forming sheet adjacent to each other. Yes. 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.

  As described above, the transfer convex fiber convex structure portion is formed by using a flocking method, and the concave portion (the concave portion due to the cavity in the release liner for the fiber convex structure transfer forming sheet, or the adjacent fiber convex shape. It can be formed by flocking the surface of the transfer-forming fiber convex structure holding pressure-sensitive adhesive layer in the linear space between the release liners for the structure transfer forming sheet. As such a flocking method, an electrostatic flocking method is particularly suitable.

  As described above, as the electrostatic flocking processing method, for example, an object to be transplanted having an adhesive layer is set to be a counter electrode with respect to one electrode, and a DC high voltage is applied thereto. By supplying flocs (fibers) between these electrodes, the flocs are caused to fly along the lines of electric force by the Coulomb force, and are pushed against the surface of the object to be transplanted (the surface of the adhesive layer). The processing method to perform etc. are 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 the above.

  Specifically, a fiber convex structure transfer forming sheet substrate, a transfer convex fiber convex structure holding adhesive layer provided on the fiber convex structure transfer forming sheet substrate, and the transfer The fiber convex structure transfer forming sheet release liner provided on the forming fiber convex structure transfer holding adhesive layer is laminated in this order on the fiber convex structure transfer forming sheet release liner. On the surface of the transfer forming fiber convex structure holding pressure-sensitive adhesive layer exposed at the concave portion due to the space between the cavity or the adjacent release liner for the fiber convex structure transfer forming sheet. In particular, by performing electrostatic flocking), the transfer-forming fiber convex structure portion can be formed on the surface portion of the transfer-forming fiber convex structure holding adhesive layer corresponding to the concave portion.

  In addition, as the release liner for the fiber convex structure transfer forming sheet, the portion corresponding to the fiber convex structure portion to be transferred and formed on the surface of the pressure-sensitive adhesive layer is a hollow portion in the release liner for the fiber convex structure transfer formation sheet, Or, the fiber convex structure transfer release sheet release liner can be formed into a recess such as a linear space between adjacent fiber convex structure transfer formation sheet release liners. It is important to use it by attaching it to the holding adhesive layer.

  As described above, when the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (c) is used as the fiber convex structure transfer forming sheet, the fiber convex structure transfer forming sheet is used. Control the position and the size and number of the fiber convex structures on the pressure-sensitive adhesive layer surface by the position of the concave portions on the release liner for the sheet and the size and number of the concave portions. Can do.

  On the other hand, as shown in FIG. 5, the fiber convex structure transfer sheet (b) having the above configuration (b) has a concavo-convex structure (for the concavo-convex portion-containing fiber convex structure transfer sheet). Base material), a release treatment layer formed on the convex portion of the base material for the convex-concave portion-containing fiber convex structure transfer forming sheet, and a bottom surface of the concave portion of the base material for the convex-concave portion-containing fiber convex structure transfer-forming sheet. Formed on the surface of the transfer-forming fiber convex structure holding pressure-sensitive adhesive layer and the concave portion of the convex-concave-containing fiber convex structure transfer-forming sheet base material formed on the surface of the transfer-forming fiber convex structure holding pressure-sensitive adhesive layer And a transfer convex fiber convex structure portion.

  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 substrate for the convex-concave portion-containing fiber convex structure transfer forming sheet, the fiber convex structure transfer forming sheet in the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (c) is used. A thin sheet similar to the base material for a sheet (appropriate thin sheet such as a plastic substrate, a metal substrate, a paper substrate, a fiber substrate, a rubber substrate, and a foam). it can. 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, the fiber convexity in the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (c) is used. Similar to the base material for sheet transfer structure, 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, the base material for the convex-concave portion-containing fiber convex structure transfer forming sheet includes a fiber convex structure transfer forming sheet (a) and a fiber convex structure transfer forming sheet (c). Similarly to the sheet base material, various additives such as an inorganic filler, an antioxidant, an antioxidant, an ultraviolet absorber, a lubricant, a plasticizer, and a colorant may be blended as necessary.

  In addition, the base material for the convex-concave portion-containing fiber convex structure transfer forming sheet includes a fiber convex structure transfer forming sheet (a) and a fiber convex structure transfer forming sheet (c). Similar to the sheet substrate, the surface may be subjected to appropriate surface treatment such as physical treatment such as corona treatment or plasma treatment, or chemical treatment such as a primer.

  In the base material for an uneven part-containing fiber convex structure transfer forming sheet, the thickness of the convex part can be selected, for example, from a range of about 10 to 1000 μm, preferably about 30 to 500 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. . From the viewpoint of transferability of the transfer-forming fiber convex structure, the depth of the recess is preferably about the same as or less than the height of the transfer-forming fiber convex structure.

  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 sheet, the base which has an uneven | corrugated part is formed by forming a recessed part in the base material which has a smooth surface which does not have an uneven | corrugated | grooved part. Materials can be used. Therefore, for example, a substrate similar to the substrate for a fiber convex structure transfer forming sheet in the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (c) is publicly known or known. A method of forming a recess using a conventional recess forming machine, a method of forming a recess by heat or light (for example, a method of forming a recess by a thermal head, halogen lamp, xenon lamp, flash lamp, laser beam, etc.), mold A concave / convex portion-containing fiber convex structure transfer forming sheet base material is produced by forming a concave portion at a predetermined portion of the surface by a method using a molding process (for example, a mold having a convex portion). can do.

  In the base material for a convex / concave portion-containing fiber convex structure transfer forming sheet, it is important that the portion forming the concave portion corresponds to the fiber convex structure portion to be transferred and formed on the pressure-sensitive adhesive layer surface. .

  Moreover, in the said fiber convex structure transfer formation sheet (b), as a peeling process layer, the fiber convex in the said fiber convex structure transfer formation sheet (a) or the said fiber convex structure transfer formation sheet (c). Example release treatment agents (for example, silicone release treatment agents, fluorine release treatment agents, long-chain alkyl release treatment agents, etc.) as release treatment agents constituting the release treatment layer of the release liner for sheet-like structure transfer forming sheets 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) and the fiber convex structure transfer formation sheet (c), a silicone release treatment agent is used from the viewpoint of peelability and cost. Among them, the above-described addition reaction type polysiloxane release agent can be preferably used.

  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 fiber convex structure transfer formation sheet (a) and the fiber convex structure transfer formation sheet (c). For example, the release treatment layer can be formed by a method in which a release treatment agent is applied to the protrusions of the concavo-convex portion-containing fiber convex structure transfer forming sheet base material.

  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, the release treatment layer may not be formed.

  Furthermore, in the fiber convex structure transfer forming sheet (b), the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer may be used as the transfer convex fiber convex structure holding adhesive layer. Similar to the transfer-forming fiber convex structure holding adhesive layer in the forming sheet (c), it is more adhesive than an adhesive layer (such as an adhesive tape or a sheet adhesive layer) that transfers and forms the fiber convex structure. Low is important. As the fiber-convex structure transfer-holding adhesive layer for transfer formation in such a fiber-convex structure transfer-forming sheet (b), the fiber-convex structure transfer-forming sheet (a) or the fiber-convex structure transfer-forming sheet ( Adhesives that are the same as the adhesive that constitutes the transfer-forming fiber convex structure holding adhesive layer in c) (for example, rubber adhesives, acrylic adhesives, polyester adhesives, urethane adhesives, polyamide adhesives) Adhesives, epoxy adhesives, vinyl alkyl ether adhesives, silicone adhesives, fluorine adhesives, hot-melt adhesives, and the like.

  In addition, as the fiber-convex structure transfer holding sheet for transfer formation (a) or the fiber-convex structure transfer-forming sheet (c) in the fiber-convex structure transfer-forming sheet (b). As in the case of), it is also important that the pressure-sensitive adhesive layer can hold the transfer-forming fiber convex structure.

  The fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming method, the thickness, etc. of the fiber convex structure transfer holding adhesive layer for transfer formation in the fiber convex structure transfer forming sheet (b) This is the same as in the case of the sheet (c) for use. For example, the transfer-forming fiber-convex structure holding adhesive layer can be formed by a method of applying an adhesive to the recess of the uneven-part-containing fiber-convex structure transfer-forming sheet base material.

  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 adhesive layer. The transfer-forming fiber convex structure portion is similar to the transfer-forming fiber convex structure portion in the fiber convex structure transfer-forming sheet (a) or the fiber convex structure transfer-forming sheet (c). It can form using a processing method (especially electrostatic flocking processing method).

  Specifically, the concavo-convex portion-containing fiber convex shape has a concavo-convex portion, a peeling treatment layer is formed on the convex portion, and a transfer-forming fiber convex structure holding adhesive layer is formed on the bottom surface of the concave portion. By applying flocking (particularly electrostatic flocking) to the surface of the transfer-forming fiber convex structure holding adhesive layer on the structure transfer forming sheet substrate, the concave-convex portion-containing fiber convex structure transfer forming sheet is provided. The transfer forming fiber convex structure portion can be formed in the concave portion of the base material for transfer and on the surface of the transfer forming fiber convex structure holding adhesive layer.

  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, the fiber convex structure transfer forming sheet (a), the fiber convex structure transfer forming sheet (b), and the fiber convex structure transfer forming sheet (c) are used. After forming the fiber convex structure portion on the surface, the fiber convex structure transfer forming sheet (a), the fiber convex structure transfer forming sheet (b) and the fiber convex structure transfer forming sheet (c) are peeled off. However, it can be used as a release liner as it is.

  In the fiber convex structure transfer forming sheet (a), the fiber convex structure transfer forming sheet (b), and the fiber convex structure transfer forming sheet (c), the fiber convex structure is formed in the recess. Since the portion is formed, the fiber raised portion where the fiber is raised can be easily formed as the fiber convex structure portion. Therefore, as the fiber convex structure transfer sheet, the fiber convex structure transfer sheet (a), the fiber convex structure transfer sheet (b), or the fiber convex structure transfer sheet ( When c) is used, it can be easily transferred to the surface of the pressure-sensitive adhesive layer with the fibers raised. 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.

  The pressure-sensitive adhesive tape or sheet of the present invention has a fiber-convex structure partially on the surface of the pressure-sensitive adhesive layer, at either one of the end portions in the width direction or longitudinal direction of the pressure-sensitive adhesive tape or sheet. As described above, the adhesive tape or sheet is laminated on the adherend using the surface of the adhesive layer at the end portion side where the fiber convex structure is formed as described above. After the alignment, by applying a small load, temporary bonding can be performed, and after temporary bonding, re-bonding and correction of the bonding position can be performed sufficiently and easily. That is, the pressure-sensitive adhesive tape or sheet of the present invention is excellent in reworkability and adhesion position correction workability when adhering adherends.

  Therefore, the pressure-sensitive adhesive tape or sheet of the present invention can be suitably used as a pressure-sensitive adhesive tape or sheet for applications in which it is required to re-apply or to correct the attachment position after temporary adhesion.

  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 prepare a release liner (release paper; sometimes referred to as “release liner A”). The coating amount of the treatment agent was 0.05 g / m ² .

The release liner A has a convex structure and a concave structure that is designed so that the area of one perforated part is about 0.5 mm ² and can be perforated at intervals of 5 mm (product) The name “HEM1” manufactured by Yuri Roll Co., Ltd .; 300 W test embossing machine) is used to perform a perforating process, and may be referred to as a release liner A having a perforated portion of a predetermined pattern shape (“release liner A having a perforated portion”). ) Was produced. In the release liner A having this perforated portion, the average perforated area of each perforated portion was about 0.5 mm ² , and the total perforated area of the perforated portion was about 2% with respect to the total surface area of the release liner.

  Moreover, as an adhesive tape, on one side of a polyolefin-based substrate having a thickness of 100 μm as a substrate, a natural rubber-based adhesive layer having a thickness of 60 μm (natural rubber and styrene-butadiene rubber, as an adhesive layer, A pressure-sensitive adhesive tape having a width of 70 mm and a length of 10 m (“adhesive tape A”) is formed by natural rubber / styrene-butadiene rubber = 50/50 (weight ratio). The release liner A having a width of 55 mm and a length of 10 m is bonded to a part on one end side of both ends in the width direction on the adhesive surface of the adhesive tape A. After that, the release liner A having a perforated portion having a width of 15 mm and a length of 10 m is formed so that no gap is generated between the release liner A and the other end portion of the width direction end portion. In Then, using a polyamide fiber (fiber thickness 1.5 denier, fiber length 0.8 mm), electrostatic flocking is performed from the surface of the release liner A side having a perforated portion, and the adhesive layer By implanting the polyamide fiber on the surface of the release liner A having a perforated portion, the surface of one pressure-sensitive adhesive layer as shown in FIGS. 7 (a) and 7 (b) is used. Then, a pressure-sensitive adhesive tape partially having a fiber raised portion (sometimes referred to as “fiber raised portion-forming pressure-sensitive adhesive tape A”) was prepared at a portion on either end side of both end portions in the width direction. In addition, after the flocking process, excess fibers attached to the surface of the release liner A and the release liner A having a perforated portion were removed with a brush.

  In addition, in the said fiber raising part formation adhesive tape A, the release liner A and release liner A which have a perforated part are used as a release liner.

  7A and 7B are schematic views showing the fiber raised portion-forming pressure-sensitive adhesive tape A according to Example 1, wherein FIG. 7A is a top view and FIG. 7B is a perspective view. In FIG. 7, 16a is a release liner A, 16b is a release liner A having a perforated portion, 16b1 is a perforated portion in the release liner A (16b) having a perforated portion, 17 is a fiber raised portion forming adhesive tape A, and 17a is a fiber raised The base material in the part-forming adhesive tape A (17), 17b is the adhesive layer in the fiber-raised part-forming adhesive tape A (17), and 18 is the fiber-raised part.

(Example 2)
As an adhesive tape, instead of the adhesive tape A, an acrylic adhesive layer having a thickness of 60 μm (base polymer is butyl acrylate) as an adhesive layer on one surface of a polyolefin-based substrate having a thickness of 100 μm as a substrate. -One pressure-sensitive adhesive in the same manner as in Example 1 except that a pressure-sensitive adhesive layer made of an acrylic pressure-sensitive adhesive that is an acrylic acid copolymer) was formed and a pressure-sensitive adhesive tape having a width of 70 mm and a length of 10 m was used. On the surface of the layer, a pressure-sensitive adhesive tape having a fiber raised portion partially at a portion on either end side in the widthwise ends (sometimes referred to as “fiber raised portion-forming pressure-sensitive adhesive tape B”). Produced.

Example 3
As a pressure-sensitive adhesive tape, instead of pressure-sensitive adhesive tape A, a butyl-based pressure-sensitive adhesive layer having a thickness of 60 μm (adhesive with a butyl-based pressure-sensitive adhesive layer) is formed on one surface of a polyolefin-based base material having a thickness of 100 μm as a base material. In the same manner as in Example 1, except that an adhesive layer was formed and a pressure-sensitive adhesive tape having a width of 70 mm and a length of 10 m was used, any one of both end portions in the width direction was formed on the surface of one pressure-sensitive adhesive layer. An adhesive tape having a fiber raised portion partially (in some cases, referred to as “fiber raised portion-forming adhesive tape C”) was produced at the end portion side.

Example 4
As a pressure-sensitive adhesive tape, instead of pressure-sensitive adhesive tape A, a butyl-based pressure-sensitive adhesive layer having a thickness of 60 μm (adhesive with a butyl-based pressure-sensitive adhesive layer) is formed on one surface of a polyolefin-based base material having a thickness of 100 μm as a base material. An adhesive layer is formed, and an adhesive tape having a width of 800 mm and a length of 2 m is used, and a release liner A having a width of 750 mm and a length of 2 m is provided on the adhesive surface of the adhesive tape with one of both end portions in the width direction. Then, the release liner A having a perforated portion having a width of 50 mm and a length of 2 m is attached to the other end portion side portion of the widthwise end portions. In the same manner as in Example 1 except that the gaps are bonded so that no gap is formed between them, on the surface of one pressure-sensitive adhesive layer, either one of the end portions in the width direction is provided. A partly sticky fiber raised part An adhesive tape (sometimes referred to as “fiber raised portion-forming adhesive tape D”) was produced.

(Example 5)
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 B”). The coating amount of the treatment agent was 0.05 g / m ² .

The release liner B has a convex structure and a concave structure similar to those in Example 1, which is designed so that the area of one perforated portion is about 0.8 mm ² and can be perforated at intervals of 5 mm. A perforation process was performed using a perforation forming machine having a release liner B having a perforated portion having the same pattern shape as in Example 1 (sometimes referred to as “release liner B having a perforated portion”). In the release liner B having this perforated portion, the average perforated area of each perforated portion was about 0.8 mm ² , and the total perforated area of the perforated portion was about 3.2% with respect to the total surface area of the release liner. It was.

  Instead of the release liner A (width: 55 mm, length: 10 m) and the release liner A having a perforated portion (width: 15 mm, length: 10 m), a release liner B having a width of 55 mm and a length of 10 m, and a width of 15 mm In addition, a release liner B having a perforated portion having a length of 10 m is used, and instead of a polyamide fiber (fiber thickness 1.5 denier, fiber length 0.8 mm), a fiber thickness 3.0 denier, fiber length Except for using a polyamide fiber having a thickness of 1.0 mm, in the same manner as in Example 1, on the surface of one of the pressure-sensitive adhesive layers, on either one of the end portions in the width direction, A pressure-sensitive adhesive tape partially having a fiber raised portion (sometimes referred to as “fiber raised portion-forming pressure-sensitive adhesive tape E”) was produced.

(Example 6)
In the same manner as in Example 5, a release liner B and a release liner B having a perforated portion were produced.
Instead of release liner A (width: 750 mm, length: 2 m) and release liner A having a perforated portion (width: 50 mm, length: 2 m), release liner B having a width of 750 mm and a length of 2 m, and width of 50 mm In addition, a release liner B having a perforated portion having a length of 2 m is used, and instead of polyamide-based fibers (fiber thickness 1.5 denier, fiber length 0.8 mm), fiber thickness 3.0 denier, fiber length Except for using a polyamide fiber having a thickness of 1.0 mm, in the same manner as in Example 4, on the surface of one of the pressure-sensitive adhesive layers, on any one of the ends in the width direction, An adhesive tape having a partially raised fiber portion (sometimes referred to as “fiber raised portion-forming adhesive tape F”) was produced.

(Comparative Example 1)
An adhesive tape (sometimes referred to as “adhesive tape G”) was prepared in the same manner as in Example 1 except that the release liner was not perforated and the flocking process on the adhesive layer was not performed.

(Comparative Example 2)
An adhesive tape (sometimes referred to as “adhesive tape H”) was prepared in the same manner as in Example 2 except that the release liner was not perforated and the flocking process on the adhesive layer was not performed.

(Comparative Example 3)
An adhesive tape (sometimes referred to as “adhesive tape I”) was prepared in the same manner as in Example 3 except that the release liner was not perforated and the flocking process on the adhesive layer was not performed.

(Comparative Example 4)
A pressure-sensitive adhesive tape (sometimes referred to as “pressure-sensitive adhesive tape J”) was produced in the same manner as in Example 4 except that punching in the release liner and flocking processing on the pressure-sensitive adhesive layer were not performed.

(Comparative Example 5)
An adhesive tape (sometimes referred to as “adhesive tape K”) was prepared in the same manner as in Example 5 except that the release liner was not perforated and the flocking process on the adhesive layer was not performed.

(Comparative Example 6)
An adhesive tape (sometimes referred to as “adhesive tape L”) was prepared in the same manner as in Example 6 except that the release liner was not perforated and the flocking process on the adhesive layer was not performed.

(Evaluation)
About fiber raising part formation adhesive tape (fiber raising part formation adhesive tape AF) obtained by Examples 1-6 and adhesive tape (adhesive tapes GL) obtained by comparative examples 1-6 fiber raising part For the formed pressure-sensitive adhesive tapes A to F, the end portion side subjected to flocking processing, and for the pressure-sensitive adhesive tapes G to L, an arbitrary portion is 100 mm (direction parallel to the longitudinal direction of the pressure-sensitive adhesive tape) × 10 mm (pressure-sensitive adhesive) A portion having a size in a direction parallel to the width direction of the tape was cut out. Thereafter, for the fiber raised portion forming adhesive tapes A to F, the release liner having the perforated portion is peeled off, and for the adhesive tapes G to L, the release liner is peeled off, and 25 g from the back side (base material side) is applied to the acrylic plate. After temporary bonding with a load of /22.5 cm ² , move the adhesive tape (fiber raised portion forming adhesive tapes A to F, adhesive tapes G to L) 10 mm from the position where they were affixed, and then press firmly. Then, the pasting position correction workability was evaluated depending on whether the movement at this time was easy.

  Moreover, after pasting, after leaving it to stand at room temperature (23 ° C.) for 24 hours, using a Tensilon tensile tester, the adhesive strength to the acrylic plate was measured, and for the fiber raised portion forming adhesive tapes A to F, respectively. The adhesive strength of the pressure-sensitive adhesive layer having a fiber raised portion on the surface was evaluated by the ratio of the adhesive tapes G to L to the adhesive strength. In addition, since it evaluated by the ratio with respect to the adhesive force of adhesive tapes G-L about adhesive tapes G-L, respectively, it is set to 100.

  Furthermore, about the fiber raising part formation adhesive tape (fiber raising part formation adhesive tape AF) obtained by Examples 1-6, and the adhesive tape (adhesion tapes GL) obtained by Comparative Examples 1-6, respectively Sampling a length of 100 mm, and pasting them on a wooden floor so that they can be linearly pasted at a predetermined position. About, the bonding workability | operativity was evaluated.

  Specifically, for the sampled fiber raised portion forming adhesive tapes A to F, first, the release liner having the perforated portion is peeled off, and the adhesive layer at the end portion side portion where the fiber convex structure portion is formed. The surface of the adhesive tape is bonded to the wooden floor in the specified position while correcting the position, and then the other end of the release liner (release liner that does not have a perforated part) is peeled off while the longitudinal end of the adhesive tape By sticking together in order from the part, the sampled fiber raised part forming adhesive tapes A to F are attached to a wooden floor so as to be linearly attached at a predetermined position, and the position correction at that time is easy The bonding workability was evaluated as to whether or not the bonding could be performed in a straight line.

  On the other hand, with respect to the sampled adhesive tapes G to L, first, the release liner having the narrower width is peeled off, and the exposed adhesive layer surface is adjusted to a predetermined position on the wooden floor, and the position is corrected if possible. Then, after pasting together, the sampled adhesive tapes G to L were made of wood by sticking them in order from the end in the longitudinal direction of the adhesive tape while peeling off the other release liner (the wider release liner). Bonding workability was evaluated with respect to the ease of position correction at that time and whether it was possible to cleanly bond together in a straight line.

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

(Example 7)
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) The solution was applied and then dried at 120 ° C. for 2 minutes to prepare a release liner (release paper; sometimes referred to as “release liner M”) as shown in FIG. In this release liner M, the application amount of the silicone release treatment agent was 0.05 g / m ² .

The release liner M has a convex structure and a concave structure that is designed so that the area of one perforated portion is about 0.5 mm ² and can be perforated at intervals of 5 mm (product) Using a name “HEM1” manufactured by Yuri Roll Co., Ltd .; 300W test embossing machine), punching is performed, and a release liner M having a pattern shape of a punched portion as shown in FIG. Liner M ”may be referred to). In the release liner M having the perforated part, the average perforated area of each perforated part was about 0.5 mm ² , and the total perforated area of the perforated part was about 2% with respect to the total surface area of the release liner.

  Next, on one side of a polyethylene film (trade name “SHO” manufactured by Okura Kogyo Co., Ltd .; thickness 50 μm; sometimes referred to as “base material M”), an acrylic pressure-sensitive adhesive (trade name “Leocoat 1020” manufactured by Toray Cortex Co., Ltd.) ) To form a pressure-sensitive adhesive layer (sometimes referred to as “pressure-sensitive adhesive layer M”), and a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer only on one side ( The adhesive liner M may be referred to as a “planting pressure-sensitive adhesive sheet M”, and a release liner M having a perforated portion is formed on the surface of the pressure-sensitive adhesive layer M of the hair-implanting pressure-sensitive adhesive sheet M. As shown in FIG. 8 (c), M and the release liner M having a perforated part are bonded so that the surface on which the release treatment layer is not formed (the release treatment layer non-formation surface) is in contact. , Release liner M with perforated part is bonded The obtained pressure-sensitive adhesive sheet M for flocking (may be referred to as “perforated part-containing release liner-attached pressure-sensitive adhesive sheet M”) was prepared.

  Next, a pressure-sensitive adhesive layer in which a release liner M having a perforated portion is bonded to a perforated portion-containing release liner-attached pressure-sensitive adhesive sheet M using a polyamide-based fiber (fiber thickness 1.5 denier, fiber length 0.8 mm). 8 (d) by performing electrostatic flocking from the surface on the M side and flocking the polyamide fiber onto the surface of the pressure-sensitive adhesive layer M exposed at the perforated portion of the release liner M having the perforated portion. A pressure-sensitive adhesive sheet having a fiber raised portion on the surface of the pressure-sensitive adhesive layer (referred to as “fiber raised portion transfer forming sheet M”) was prepared. After the flocking process, excess fibers attached to the surface of the release liner M side having the perforated portion of the fiber raised portion transfer forming sheet M were removed with a brush.

  FIG. 8 is a schematic cross-sectional view showing various members produced when producing the fiber raised portion-forming pressure-sensitive adhesive tape M according to Example 7. In FIG. 8, (a) shows the release liner M, (b) Represents a release liner M having a perforated portion, (c) represents a perforated portion-containing release liner-attached pressure-sensitive adhesive sheet M, and (d) represents a fiber raised portion transfer forming sheet M. In FIG. 8, 19 is a release liner M, 19a is a base material in the release liner M (19), 19b is a release treatment agent layer in the release liner M (19), 20 is a release liner M having a perforated portion, and 20a is a perforated portion. Perforated part in release liner M (20) having a perforated part, 21 is a pressure-sensitive adhesive sheet M having a perforated part-containing release liner, 21a is a pressure-sensitive adhesive sheet M for flocking, 21a1 is a base material M in a pressure-sensitive adhesive sheet M (21a), and 21a2 is flocked In the pressure-sensitive adhesive sheet M (21a), the pressure-sensitive adhesive layers M and 22 are the fiber raised portion transfer forming sheet M, and 22a is the fiber raised portion in the fiber raised portion transfer forming sheet M (22).

  Moreover, as an adhesive tape, on one side of a polyolefin-based substrate having a thickness of 100 μm as a substrate, a natural rubber-based adhesive layer having a thickness of 60 μm (natural rubber and styrene-butadiene rubber, as an adhesive layer, A pressure-sensitive adhesive tape having a width of 70 mm and a length of 10 m (“adhesive tape M”) is formed by natural rubber / styrene-butadiene rubber = 50/50 (weight ratio). The release liner M having a width of 55 mm and a length of 10 m is pasted on the adhesive surface of the adhesive tape M to a portion on one end side of both ends in the width direction. After that, the fiber raised portion transfer forming sheet M having a width of 15 mm and a length of 10 m is transferred to the other end portion side of the width direction end portion on the adhesive surface of the adhesive tape M and the fiber raised portion transfer. Forming sheet Bonding is performed so that the surface on the side subjected to electrostatic flocking processing in M (the surface on which the fiber raising portion is formed) is in contact with the release liner M and no gap is formed. 9a and 9b, partially on the surface of one of the pressure-sensitive adhesive layers, on either end of the width direction, as shown in FIGS. A pressure-sensitive adhesive tape having a fiber raised portion (sometimes referred to as “fiber raised portion-forming pressure-sensitive adhesive tape M”) was prepared.

  FIG. 9 is a schematic view showing a fiber raised portion-forming adhesive tape M according to Example 7. In FIG. 9, (a) is a top view, and (b) is a perspective view. In FIG. 9, reference numeral 23 denotes a fiber raised portion-forming adhesive tape M, 23a denotes an adhesive tape M, 23a1 denotes a base material in the adhesive tape M (23a), and 23a2 denotes an adhesive layer in the adhesive tape M (23a). 19, 19a, 19b, 20, 20a, 21, 21a, 21a1, 21a2, 22, and 22a are the same as described above.

  In addition, the adhesive force of the adhesive layer in the adhesive tape M is larger than the adhesive layer M in the fiber raised portion transfer forming sheet M.

  In the fiber raising portion-forming pressure-sensitive adhesive tape M, the perforated part-containing release liner-attached pressure-sensitive adhesive sheet M and the release liner M are used as release liners. The fiber raising part formation adhesive tape M as shown in FIG. 10 is obtained. Such a perforated part-containing release liner-attached pressure-sensitive adhesive sheet M corresponds to a release liner in which the fiber raised portion is removed from the fiber raised portion transfer forming sheet M by transfer.

  FIG. 10 is a schematic cross-sectional view showing a fiber raised portion-forming pressure-sensitive adhesive tape M according to Example 7. In FIG. 10, each symbol is the same as described above.

(Example 8)
As an adhesive tape, instead of the adhesive tape M, an acrylic adhesive layer having a thickness of 60 μm (base polymer is butyl acrylate) as an adhesive layer on one surface of a polyolefin-based substrate having a thickness of 100 μm as a substrate. -One pressure-sensitive adhesive in the same manner as in Example 1 except that a pressure-sensitive adhesive layer made of an acrylic pressure-sensitive adhesive that is an acrylic acid copolymer) was formed and a pressure-sensitive adhesive tape having a width of 70 mm and a length of 10 m was used. On the surface of the layer, a pressure-sensitive adhesive tape having a fiber raised portion partially at any one of the end portions in the width direction (sometimes referred to as “fiber raised portion-forming pressure-sensitive adhesive tape N”). Produced.

Example 9
As an adhesive tape, instead of the adhesive tape M, on one side of a polyolefin substrate having a thickness of 100 μm as a substrate, a butyl adhesive layer having a thickness of 60 μm as an adhesive layer (adhesion with a butyl adhesive) In the same manner as in Example 1, except that an adhesive layer was formed and a pressure-sensitive adhesive tape having a width of 70 mm and a length of 10 m was used, any one of both end portions in the width direction was formed on the surface of one pressure-sensitive adhesive layer. A pressure-sensitive adhesive tape partially having a fiber raised portion (sometimes referred to as “fiber raised portion-forming pressure-sensitive adhesive tape O”) was produced at the end portion side.

(Example 10)
As an adhesive tape, instead of the adhesive tape M, on one side of a polyolefin substrate having a thickness of 100 μm as a substrate, a butyl adhesive layer having a thickness of 60 μm as an adhesive layer (adhesion with a butyl adhesive) The adhesive layer is formed, and an adhesive tape having a width of 800 mm and a length of 2 m (sometimes referred to as “adhesive tape P”) is used, and the adhesive surface of the adhesive tape P is peeled off with a width of 750 mm and a length of 2 m. After the liner M is bonded to a part on one end side in both end portions in the width direction, the fiber raised portion transfer forming sheet M having a width of 50 mm and a length of 2 m is attached to the end portions in the width direction. In the other end side portion of the adhesive tape P, the adhesive surface of the adhesive tape P and the surface on the side where the electrostatic flocking processing is performed in the fiber raised portion transfer forming sheet M (the surface on which the fiber raised portion is formed) And the peeling roller Laminate the inner M in such a way that there is no gap between them, and pressure-bond them, partially on the surface of one of the pressure-sensitive adhesive layers, at any one of the end portions in the width direction. A pressure-sensitive adhesive tape having a fiber raised portion (sometimes referred to as “fiber raised portion-forming pressure-sensitive adhesive tape P”) was prepared.

(Example 11)
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 N”). The coating amount of the treatment agent was 0.05 g / m ² .

The release liner N has an area of one perforated portion of about 0.8 mm ² and is designed so that it can be perforated at intervals of 5 mm. A perforating process was performed using a perforation forming machine having the above, and a release liner N having a perforated portion having the same pattern shape as in Example 7 (sometimes referred to as “release liner N having a perforated portion”) was produced. In the release liner N having this perforated portion, the average perforated area of each perforated portion was about 0.8 mm ² , and the total perforated area of the perforated portion was about 3.2% with respect to the total surface area of the release liner. It was.

  Instead of the release liner M (width: 55 mm, length: 10 m) and the release liner M (width: 15 mm, length: 10 m) having a perforated portion, a release liner N having a width of 55 mm and a length of 10 m, and a width of 15 mm In addition, a release liner N having a perforated portion having a length of 10 m is used, and instead of polyamide-based fibers (fiber thickness 1.5 denier, fiber length 0.8 mm), fiber thickness 3.0 denier, fiber length Except for using a 1.0 mm thick polyamide-based fiber, in the same manner as in Example 7, on the surface of one pressure-sensitive adhesive layer, either one of the end portions in the width direction, A pressure-sensitive adhesive tape partially having a fiber raised portion (sometimes referred to as “fiber raised portion-formed pressure-sensitive adhesive tape Q”) was produced.

(Example 12)
In the same manner as in Example 11, a release liner N and a release liner N having a perforated portion were produced.
Instead of the release liner M (width: 750 mm, length: 2 m) and the release liner M (width: 50 mm, length: 2 m) having a perforated portion, a release liner N having a width of 750 mm and a length of 2 m, and a width of 50 mm In addition, a release liner N having a perforated portion having a length of 2 m is used, and instead of a polyamide fiber (fiber thickness 1.5 denier, fiber length 0.8 mm), a fiber thickness 3.0 denier, a fiber length Except for using a 1.0 mm thick polyamide-based fiber, in the same manner as in Example 10, on the surface of one pressure-sensitive adhesive layer, at any one of the end portions in the width direction, A pressure-sensitive adhesive tape partially having a fiber raised portion (sometimes referred to as “fiber raised portion-forming pressure-sensitive adhesive tape R”) was produced.

  In Examples 8 to 12, the adhesive force of the pressure-sensitive adhesive layer in the fiber raised portion-forming pressure-sensitive adhesive tape (fiber raised portion-forming pressure-sensitive adhesive tapes N to R) is greater than that of the pressure-sensitive adhesive layer in the fiber raised portion transfer-forming sheet. large.

(Comparative Example 7)
An adhesive tape (sometimes referred to as “adhesive tape S”) was produced in the same manner as in Example 7 except that the release liner was not perforated and the flocking process on the adhesive layer was not performed.

(Comparative Example 8)
A pressure-sensitive adhesive tape (sometimes referred to as “pressure-sensitive adhesive tape T”) was produced in the same manner as in Example 8 except that the punching in the release liner and the flocking process on the pressure-sensitive adhesive layer were not performed.

(Comparative Example 9)
An adhesive tape (sometimes referred to as “adhesive tape U”) was produced in the same manner as in Example 9 except that the perforation to the release liner and the flocking process to the adhesive layer were not performed.

(Comparative Example 10)
An adhesive tape (sometimes referred to as “adhesive tape V”) was prepared in the same manner as in Example 10 except that the release liner was not perforated and the flocking process on the adhesive layer was not performed.

(Comparative Example 11)
An adhesive tape (sometimes referred to as “adhesive tape W”) was produced in the same manner as in Example 11 except that the release liner was not perforated and the flocking process on the adhesive layer was not performed.

(Comparative Example 12)
An adhesive tape (sometimes referred to as “adhesive tape X”) was produced in the same manner as in Example 12 except that the release liner was not perforated and the flocking process on the adhesive layer was not performed.

(Evaluation)
About the fiber raising part formation adhesive tape (fiber raising part formation adhesive tape MR) obtained by Examples 7-12, the fiber raising part about the adhesive tape (adhesion tape S-X) obtained by Comparative Examples 7-12 For the formed pressure-sensitive adhesive tapes M to R, an end portion side subjected to flocking processing, and for the pressure-sensitive adhesive tapes S to X, an arbitrary portion is 100 mm (direction parallel to the longitudinal direction of the pressure-sensitive adhesive tape) × 10 mm (pressure-sensitive adhesive) A portion having a size in a direction parallel to the width direction of the tape was cut out. Thereafter, for the fiber raised portion-forming pressure-sensitive adhesive tapes M to R, the release liner having the perforated portion is peeled off, and for the pressure-sensitive adhesive tapes S to X, the release liner is peeled off, and 25 g from the back side (base material side) is applied to the acrylic plate. After temporary bonding with a load of /22.5 cm ² , move the adhesive tape (fiber raised portion forming adhesive tapes MR to adhesive tapes S to X) 10 mm from the position where they were pasted, and then press firmly. Then, the pasting position correction workability was evaluated depending on whether the movement at this time was easy.

  Moreover, after pasting, it was left to stand at room temperature (23 ° C.) for 24 hours, and then, using a Tensilon tensile tester, the adhesive strength to the acrylic plate was measured. The adhesive strength of the pressure-sensitive adhesive layer having a fiber raised portion on the surface was evaluated by the ratio of the adhesive tapes S to X to the adhesive strength. In addition, since it evaluated by the ratio with respect to the adhesive force of adhesive tape S-X, respectively about adhesive tape S-X, it is set to 100 in all.

  Furthermore, about the fiber raising part formation adhesive tape (fiber raising part formation adhesive tape MR) obtained by Examples 7-12, about the adhesive tape (adhesive tape SX) obtained by Comparative Examples 7-12, respectively Sampling a length of 100 mm, and pasting them on a wooden floor so that they can be linearly pasted at a predetermined position. About, the bonding workability | operativity was evaluated.

  Specifically, for the sampled fiber raised portion forming adhesive tapes M to R, first, the release liner having the perforated portion is peeled off, and the adhesive layer at the end portion side portion where the fiber convex structure portion is formed. The surface of the adhesive tape is bonded to the wooden floor in the specified position while correcting the position, and then the other end of the release liner (release liner that does not have a perforated part) is peeled off while the longitudinal end of the adhesive tape By sticking together in order from the part, the sampled fiber raised portion forming adhesive tapes M to R are attached to a wooden floor so as to be linearly attached at a predetermined position, and the position correction at that time is easy The bonding workability was evaluated as to whether or not the bonding could be performed in a straight line.

  On the other hand, with respect to the sampled adhesive tapes S to X, first, the release liner having the narrower width is peeled off, and the exposed adhesive layer surface is adjusted to a predetermined position on the wooden floor, and the position is corrected if possible. Then, after pasting together, the sampled adhesive tapes S to X were made by sticking together in order from the end in the longitudinal direction of the adhesive tape while peeling off the other release liner (the wider release liner). Bonding workability was evaluated with respect to the ease of position correction at that time and whether it was possible to cleanly bond together in a straight line.

  These evaluation results are shown in the columns of “Attachment position correction workability”, “Adhesive strength recovery rate (%)”, and “Lamination workability” in Table 2, respectively.

  As is clear from Tables 1 and 2, the pressure-sensitive adhesive sheet according to the example (on the surface of the pressure-sensitive adhesive layer, partially raised fiber at the part on either end side in the width direction or the longitudinal direction) It was confirmed that the pressure-sensitive adhesive sheet having a portion was easy to correct the position after the initial attachment, and the adhesive strength after strong attachment was good.

It is the schematic which shows partially an example of the adhesive tape or sheet | seat of this invention, (a) is the schematic plan view seen from the upper surface of the adhesive tape or sheet, (b) is the outline of the XY line in (a). It is sectional drawing. A pressure-sensitive adhesive tape (rolled) which has a fiber raised portion and is rolled in a part at either one of the end portions in the width direction on the surface of one pressure-sensitive adhesive layer FIG. It is a schematic sectional drawing which shows partially an example of the state which pastes together the sheet | seat for fiber convex structure transcription | transfer formation in this invention on the surface of an adhesive tape or the adhesive layer of a sheet | seat, and transcribe | transfers and forms a fiber convex structure part. FIG. 4 is a schematic view partially showing an example of a fiber convex structure transfer forming sheet in the present invention, and FIG. 4A is a schematic plan view seen from the upper surface of the fiber convex structure transfer forming sheet, FIG. ) Is a schematic cross-sectional view taken along line XY in FIG. FIG. 5A is a schematic view partially showing an example of a fiber convex structure transfer forming sheet in the present invention, and FIG. 5A is a schematic plan view seen from the upper surface of the fiber convex structure transfer forming sheet, FIG. ) Is a schematic cross-sectional view taken along line XY in FIG. FIG. 6 is a schematic view partially showing an example of a fiber convex structure transfer forming sheet in the present invention, and FIG. 6A is a schematic plan view seen from the upper surface of the fiber convex structure transfer forming sheet, FIG. ) Is a schematic cross-sectional view taken along line XY in FIG. It is the schematic which shows the fiber raising part formation adhesive tape A which concerns on Example 1, (a) is a top view, (b) is a perspective view. It is a schematic sectional drawing which shows the various members produced when manufacturing the fiber raising part formation adhesive tape M which concerns on Example 7. FIG. It is the schematic which shows the fiber raising part formation adhesive tape M which concerns on Example 7, In FIG. 9, (a) is a top view, (b) is a perspective view. It is a schematic sectional drawing which shows the fiber raising part formation adhesive tape M which concerns on Example 7. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adhesive tape or sheet 1a Adhesive tape of the form wound by roll shape 2 Adhesive layer for adhesive tapes or sheets 2a The surface of the adhesive layer 2 2a1 One end part of the surface 2a of the adhesive layer 2 2a2 Adhesive layer The other end of the surface 2a of 3 2 Adhesive tape or sheet base material 4a Adhesive tape or sheet release liner having a perforated part 4a1 Perforated part of perforated part-containing release liner 4a 4b Adhesive tape or sheet release liner 5 Fiber raising Part 6 Fiber convex structure transfer forming sheet 6a Release liner 6a1 in fiber convex structure transfer forming sheet 6 Hole 1 in fiber convex structure transfer forming sheet release liner 6a Fiber convex structure transfer forming sheet 6 Adhesive layer 6c Substrate in fiber convex structure transfer sheet 6 7 Release liner 8 Adhesive tape or sheet viscosity Fiber napping section for transferring formed on adhesive layer 9 adhesive tape or sheet 9a adhesive tape or the substrate on the surface 9b pressure-sensitive adhesive tape or sheet 9 of the pressure-sensitive adhesive layer 9a1 pressure-sensitive adhesive tape or sheet for the adhesive layer 9a in the sheet 9

Claims (4)

A pressure-sensitive adhesive tape or sheet in which a pressure-sensitive adhesive layer is formed on at least one surface of the support, and any of both end portions in the width direction or longitudinal direction on the surface of the pressure-sensitive adhesive layer on at least one surface of the support A pressure-sensitive adhesive tape or sheet characterized by partially having a fiber convex structure portion at a site on the one end side. The pressure-sensitive adhesive tape or sheet according to claim 1, 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 part on the side of the end where the fiber convex structure is formed is in the width direction of the pressure-sensitive adhesive tape or sheet from either one of the width direction or both ends of the longitudinal direction on the surface of the pressure-sensitive adhesive layer. The pressure-sensitive adhesive tape or sheet according to claim 1 or 2, which is a site up to a position corresponding to a length of 5 to 50% of the total length. The portion on the end side where the fiber convex structure portion is formed is 5 to 30% of the total length in the width direction from either one of the both ends in the width direction of the adhesive tape or sheet. It is a site | part of length, The adhesive tape or sheet | seat of any one of Claims 1-3.

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