JP2005350596A - Adhesive tape or sheet, method for producing the same and sheet for transferring and forming fiber projected structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an adhesive tape or sheet having excellent reworkability and correcting workability of attached position and method for producing the same. <P>SOLUTION: The adhesive tape or sheet is an adhesive tape or sheet having an adhesive layer formed on at least one side of a substrate and has a plurality of line-like fiber projected structural parts on the surface of the adhesive layer on at least one side of the substrate. The fiber projected structural parts are preferably fiber-napped parts of structure that fibers stand from the surface of the adhesive layer. Preferably a plurality of the line-like fiber projected structural parts is formed mutually in parallel and a plurality of the line-like fiber projected structural parts may be formed in the length direction of the adhesive tape or sheet as a line direction. The gap between the adjacent line-like fiber projected structural parts is 1-100 mm and the width of each of the line-like fiber projected structural parts is preferably 10 μm-10 mm. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pressure-sensitive adhesive tape or sheet, a method for producing the same, and a fiber convex structure transfer forming sheet. The present invention relates to a pressure-sensitive adhesive tape or sheet excellent in workability, a method for producing the same, and a fiber convex structure transfer forming sheet used as a sheet for producing the pressure-sensitive adhesive tape or sheet.

  When adhering an adhesive tape or sheet to various adherends, it is required that the adhesive tape or sheet be easily and firmly adhered to a predetermined position on the adherend. In addition, it is required to have a characteristic that allows re-sticking (so-called “reworkability”) 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. For this purpose, after the flooring material is inserted, the flooring material must be moved along the floor a considerable distance. . 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 (see Patent Document 2) using an adhesive tape or sheet having an uneven structure on the surface of the pressure-sensitive adhesive layer, There has been proposed 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 (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 attaching 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, and its manufacturing method.
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, and a method for producing the same.

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

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

  That is, the present invention is a pressure-sensitive adhesive tape or sheet in which a pressure-sensitive adhesive layer is formed on at least one surface of a support, and the line-like fiber convexity is formed on the surface of the pressure-sensitive adhesive layer on at least one surface of the support. It is an adhesive tape or sheet characterized by having a plurality of shaped structure 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. In addition, it is preferable that a plurality of line-like fiber convex structure portions are formed in parallel with each other, and it is preferable that a plurality of line-shaped fiber convex structures are formed with the longitudinal direction of the adhesive tape or sheet as the line direction. In the line-like fiber convex structure part, the interval between adjacent line-like fiber convex structure parts may be 1 to 100 mm, and the width of each line-like fiber convex structure part is: It may be 10 μm to 10 mm.

  The pressure-sensitive adhesive tape or sheet of the present invention is a double-sided pressure-sensitive adhesive tape or sheet, and a plurality of linear fiber convex structures are formed on the surface of the pressure-sensitive adhesive layer on at least one surface of the support. Is preferred.

  As the pressure-sensitive adhesive tape or sheet, a line-shaped fiber convex structure portion is formed by a fiber convex structure transfer forming sheet capable of transferring and forming a line-shaped fiber convex structure portion on the surface of the pressure-sensitive adhesive layer. A plurality of pressure-sensitive adhesive layers may be transferred and formed on the surface of the pressure-sensitive adhesive layer, and at least one surface of the pressure-sensitive adhesive layer is formed by transferring a line-shaped fiber-shaped convex structure portion. A plurality of line-shaped transfer convex fiber convex structure portions for transferring and forming line-shaped fiber convex structure portions on the pressure-sensitive adhesive layer surface. It is preferable to have.

The present invention is also a method for producing the pressure-sensitive adhesive tape or sheet, wherein the line-shaped fiber convex structure is formed by any one of the following methods (A) to (C). A method for producing an adhesive tape or sheet is provided.
(A) In a state where a plurality of release substrates are overlapped on the surface of the pressure-sensitive adhesive layer with a plurality of line intervals, between adjacent release substrates or between adjacent release substrates and between the release substrate and the pressure-sensitive adhesive The surface of the pressure-sensitive adhesive layer that is exposed in a line shape between the ends of the surface of the layer is subjected to flocking to form a line-shaped fiber convex structure portion. (B) A line-shaped cavity portion is formed. In a state where the release substrate having the surface of the pressure-sensitive adhesive layer is superposed on the surface of the pressure-sensitive adhesive layer exposed in a line at the line-shaped cavity of the release substrate, Forming the fiber convex structure part (C) A fiber convex structure transfer forming sheet capable of transferring and forming the line-shaped fiber convex structure part on the surface of the pressure-sensitive adhesive layer is stacked on the surface of the pressure-sensitive adhesive layer. In addition, to transfer the line-shaped fiber convex structure to the surface of the adhesive layer Ri to form a line-shaped fiber convex structure section

  In the method for producing the pressure-sensitive adhesive tape or sheet of the present invention, the fiber convex structure transfer forming sheet capable of transferring and forming a line-shaped fiber convex structure portion on the surface of the pressure-sensitive adhesive layer has at least one surface. The line-shaped fiber convex structure has a function as a peeling surface for the pressure-sensitive adhesive layer to be transferred and the line-shaped fiber convex structure is transferred to the surface of the pressure-sensitive adhesive layer. It is preferable to have a plurality of line-shaped transfer convex fiber convex structures for formation.

  The present invention is also a fiber convex structure transfer forming sheet capable of transferring and forming a line-shaped fiber convex structure portion on the surface of the pressure-sensitive adhesive layer, at least one surface of which is a line shape In order to transfer and form a line-shaped fiber convex structure portion on the surface of the pressure-sensitive adhesive layer on the surface of the pressure-sensitive adhesive layer. There is provided a fiber convex structure transfer forming sheet comprising a plurality of line-shaped transfer convex fiber convex structures.

  As the fiber convex structure transfer forming sheet of the present invention, a concave portion is formed in a line shape on the release surface side, and a linear convex fiber convex structure portion for transfer formation is provided in the concave portion. Is preferred.

  In the present invention, the transfer forming fiber that has lower adhesiveness than the pressure-sensitive adhesive layer for transferring and forming the fiber convex structure portion at the bottom of the line-shaped concave portion on the release surface side and holds the fiber forming structure portion for transfer formation. It is preferable to have a convex structure holding adhesive layer. Such a fiber convex structure transfer forming sheet includes a base material, a transfer forming fiber convex structure holding adhesive layer provided on the base material, and the transfer forming fiber convex structure holding adhesive. It is formed with a plurality of release substrates provided on the layer with a line interval, and the line-shaped transfer convex fiber convex structure is between adjacent release substrates or adjacent release It is formed in the line-shaped recess between the base material and between the peeling substrate and the end of the surface of the transfer-forming fiber convex structure holding adhesive layer and on the surface of the transfer-forming fiber convex structure holding adhesive layer. In addition, a base material having a line-shaped uneven structure, a release treatment layer formed on the convex portion of the base material, and a fiber forming structure for transfer formation formed on the bottom surface of the concave portion of the base material And a line-shaped transfer forming fiber. Convex structure section may be formed on and transfer forming fiber convex structure section holding the adhesive layer surface in the recess linear base material.

  Moreover, in this invention, it has the peeling process layer which hold | maintains the line-shaped transfer formation fiber convex structure part in the bottom part of the line-shaped recessed part by the side of a peeling surface, and the line-shaped transfer formation fiber convex shape It is preferable that the structure portion is formed directly on the surface of the release treatment layer in the line-shaped recess.

  The fiber convex structure transfer forming sheet may have a form wound in a roll shape with the release surface inside, and an adhesive layer for forming a line-shaped fiber convex structure portion. However, it may be a pressure-sensitive adhesive layer made of at least one pressure-sensitive adhesive selected from rubber-based pressure-sensitive adhesives, acrylic pressure-sensitive adhesives, and hot-melt pressure-sensitive adhesives.

  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.

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

(Fiber convex structure)
In the pressure-sensitive adhesive tape or sheet of the present invention, on the surface of the pressure-sensitive adhesive layer formed on at least one surface of the support, a line-like (stripe-like) fiber convex structure portion (“line-like fiber convex structure portion” and Are formed). That is, the pressure-sensitive adhesive tape or sheet has a form or configuration that is partially formed on the surface of the pressure-sensitive adhesive layer so that the fiber convex structure portion is in a line shape, and is adjacent to the line-shaped fiber convex structure. The surface of the pressure-sensitive adhesive layer is exposed between the portions or between the line-shaped fiber convex structure portion and the end of the surface of the pressure-sensitive adhesive layer. Such a line-shaped fiber convex structure has a configuration in which an adhesive tape or a sheet can be temporarily bonded to an adherend and then firmly bonded to the adherend by pressure bonding. It is important that The line-like fiber convex structure part is not particularly limited as long as it is a structure part that is convexly formed by fibers and is formed in a line shape. For example, a structure in which fibers stand up from the surface of the pressure-sensitive adhesive layer. And a line-like fiber raised portion having a structure (line-like fiber raised portion), and a line-like fiber convex structure having a structure in which a lump of fibers is provided on the surface of the pressure-sensitive adhesive layer. The line-shaped 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 line-like fiber convex structure part is normally comprised by the some fiber. The number and density of the fibers constituting one line-shaped 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. it can.

  As the line-shaped fiber convex structure portion, a line-shaped fiber raised portion having a structure in which fibers stand up from the surface of the pressure-sensitive adhesive layer is preferable.

  FIG. 1 is a schematic view partially showing an example of the pressure-sensitive adhesive tape or sheet of the present invention. 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. One end of the surface 2a of the adhesive 2a2 is the other end of the surface 2a of the pressure-sensitive adhesive layer 2, 3 is an adhesive tape or sheet substrate (sometimes simply referred to as "substrate"), 4a to 4d are Release liner for pressure-sensitive adhesive tape or sheet (sometimes simply referred to as “release liner”), 5a is a linear portion between the release liner 4a and the end 2a1 of the surface 2a of the pressure-sensitive adhesive layer 2, 5b to 5d Is a line-shaped portion between adjacent release liners 4a to 4d, 5e is a line-shaped portion between the release liner 4d and the end 2a2 of the surface 2a of the pressure-sensitive adhesive layer 2, and 6a to 6e are respectively It is a line-like fiber raising partThe pressure-sensitive adhesive tape or sheet 1 has a configuration in which a pressure-sensitive adhesive layer 2 is formed on one side of a base material 3 as a support and the pressure-sensitive adhesive layer 2 is partially protected in a line shape by release liners 4a to 4d. The surface 2a of the pressure-sensitive adhesive layer 2 is provided with a line-like fiber raised portion 6a at a line-shaped portion 5a between the release liner 4a and the end 2a1 on the surface 2a of the pressure-sensitive adhesive layer 2. The line-shaped portions 5b to 5d between the adjacent release liners 4a to 4d are respectively provided with line-shaped fiber raised portions 6b to 6d. The release liner 4d and the end 2a2 on the surface 2a of the pressure-sensitive adhesive layer 2 are provided. The line-shaped fiber raising part 6e is provided in the line-shaped site | part 5e between. Such line-like fiber raised portions 6a to 6e (sometimes collectively referred to as "line-like fiber raised portions 6") are provided as line-like fiber convex structure portions.

  In addition, in FIG. 1, the said line-like fiber raising part 6 forms the several line extended in the longitudinal direction of the adhesive tape or the sheet | seat 1 as a whole, Therefore, each line-like fiber raising part 6 is parallel. It has become. The interval between adjacent line-shaped fiber raised portions 6 (distance between the opposite ends of adjacent line-shaped fiber raised portions 6; corresponding to the width of each release liner 4a to 4d) is 10 mm. It has become. Moreover, all the line-shaped fiber raising parts 6 are formed with the same width (constant width), and the width is 1 mm.

  In addition, in FIGS. 2-3, the photograph regarding the shape of the line-like fiber raising part currently formed in the surface of an adhesive layer is shown. FIG. 2 is a view showing a photograph relating to the shape of the line-like fiber raised portion formed on the surface of the pressure-sensitive adhesive layer, as viewed from the top surface of the pressure-sensitive adhesive layer. FIG. 3 is a view showing a photograph relating to the shape of the line-like fiber raised portion formed on the surface of the pressure-sensitive adhesive layer, and is an enlarged view of a main part showing the line-like fiber raised portion according to FIG. The photographs shown in FIGS. 2 to 3 are photographs taken using a trade name “VH-6200” (manufactured by KEYENCE) as a digital microscope under a magnification ratio of 50 to 175 times.

  In such a line-shaped fiber raised portion, as a structure as the fiber raised portion, for example, (1) one end of one fiber is bonded and fixed to the surface of the adhesive layer, and the other end is A structure in which fibers stand up in a substantially I-shape from the surface of the pressure-sensitive adhesive layer in a non-fixed (free) state (structure shown in FIG. 1), (2) one fiber A structure in which the fiber is erected in a substantially V shape from the surface of the pressure-sensitive adhesive layer in a state where the central portion is bonded to the surface of the pressure-sensitive adhesive layer and both ends of the fiber are not fixed (free), (3 ) In the state where both ends of one fiber are bonded and fixed to the surface of the pressure-sensitive adhesive layer, and the central portion of the fiber is not fixed (free), the fiber is reversely approximately U-shaped from the surface of the pressure-sensitive adhesive layer. In addition to the structure standing on the mold, the fibers from the surface of the adhesive layer are substantially W-shaped, substantially M-shaped, substantially N-shaped, and generally O-shaped. What shape is standing structure, further, such as these structures are combined structure. As the structure of the fiber raising portion, the structure (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 pressure-sensitive 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.

  A plurality of fiber convex structures are provided in a line on the surface of the pressure-sensitive adhesive layer. Thus, in the line-shaped fiber convex structure portion provided in plurality on the surface of the pressure-sensitive adhesive layer, the overall shape thereof is not particularly limited, and the intended rework property, pasting position correction workability, It can be selected as appropriate according to the type of the kimono, and may have a predetermined pattern shape.

  The direction of the line (line direction) in the line-shaped fiber convex structure is not particularly limited, and may be, for example, any of the longitudinal direction, the width direction, and other directions (diagonal direction) of the adhesive tape or sheet. Although the longitudinal direction and the width direction of the pressure-sensitive adhesive tape or sheet are preferable, the lengthwise direction of the pressure-sensitive adhesive tape or sheet is particularly preferable.

  In addition, the line-shaped fiber convex structure portions may be all non-parallel to each other or partly non-parallel to each other (that is, partly parallel), but all are parallel to each other. Is preferred. That is, it is preferable that the direction of the line in the plurality of line-shaped fiber convex structures is only one direction. Thus, it is preferable that the plurality of line-shaped fiber convex structures are formed in a positional relationship that is generally parallel to each other. In addition, when the some line-shaped fiber convex structure part is formed in the non-parallel positional relationship in whole or part, the line-shaped fiber convex structure parts may cross | intersect.

  Furthermore, when the plurality of line-like fiber convex structures are formed in a parallel positional relationship, the interval between adjacent line-like fiber convex structures may not be constant (all or It may be formed in some different forms) but is preferably constant. That is, it is preferable that the line-shaped fiber convex structure portions are formed in parallel to each other and in a form in which the intervals between adjacent line-shaped fiber convex structure portions are all the same.

  In addition, it does not restrict | limit especially as the space | interval (namely, the width | variety of the adhesive layer surface to expose) of the adjacent linear fiber convex structure part, The number of the width | variety of an adhesive tape or a sheet | seat, or a linear fiber convex structure part or Select appropriately according to the density, the width of each line-like fiber convex structure, 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. be able to. Specifically, for example, when a plurality of line-shaped fiber convex structures are formed at a constant interval in parallel with each other (when formed in a shape as shown in FIG. 1), they are adjacent to each other. As a space | interval of a linear fiber convex-shaped structure part, it can select from the range of 1-100 mm (preferably 3-50 mm, More preferably, it is 5-40 mm), for example.

  Moreover, when the line-shaped fiber convex structure part is formed in parallel with each other 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), the line-shaped fiber convex structure part, The distance between the end of the pressure-sensitive adhesive layer surface is not particularly limited, and the width of the pressure-sensitive adhesive tape or sheet, the number or density of the line-shaped fiber convex structures, the width of each line-shaped fiber convex structure, the pressure-sensitive 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. Specifically, for example, the distance between the line-shaped fiber convex structure and the end of the pressure-sensitive adhesive layer surface is in the range of 0 to 100 mm (preferably 0 to 50 mm, more preferably 0 to 40 mm). You can choose from. In addition, when the distance between a line-like fiber convex structure part and the edge part of the adhesive layer surface is 0 m, the line-like fiber convex structure part is formed in the edge part of the adhesive layer surface Means.

  Furthermore, the width of each line-like fiber convex structure portion may not be constant (although it may be different in all or in part), it is preferably constant. . That is, it is preferable that all the line-shaped fiber convex structures have the same width.

  The width of each line-shaped fiber convex structure is not particularly limited, and the width of the adhesive tape or sheet, the number or density of the line-shaped fiber convex structures, and the interval between adjacent line-shaped fiber convex structures. The pressure-sensitive adhesive tape or sheet can be appropriately selected according to the adhesive force to the adherend, the intended reworkability, the pasting position correction workability, the kind of the adherend, and the like. Specifically, for example, when a plurality of line-shaped fiber convex structures are formed with a certain width (when formed in a shape as shown in FIG. 1), each line-shaped fiber convex structure is The width can be selected from the range of, for example, 10 μm to 10 mm (preferably 30 μm to 5 mm, more preferably 50 μm to 3 mm).

  Therefore, in the present invention, as the line-shaped fiber convex structure portion, the line-shaped fiber convex structure portion having a constant width (same width) is formed with the longitudinal direction of the adhesive tape or sheet as the line direction (linear in the longitudinal direction). It is preferable that a plurality of the electrodes are formed in parallel and at a constant interval (the same interval).

  In addition, the length in the line direction (longitudinal direction of the line) of each line-shaped fiber convex structure portion is not particularly limited, and can be appropriately selected according to the line direction and the like. For example, when the line-shaped fiber convex structure portion is formed with the longitudinal direction of the pressure-sensitive adhesive tape or sheet as the line direction, the maximum length of the line-shaped fiber convex structure portion in the line direction is the pressure-sensitive adhesive tape or sheet. It can be set as the length of the longitudinal direction.

  In addition, the number or density of the line-shaped fiber convex structures is not particularly limited, and the width of the pressure-sensitive adhesive tape or sheet, the pressure-sensitive adhesive strength of the pressure-sensitive adhesive tape or sheet to the adherend, the target rework property and the correction of the attachment position It can be appropriately selected according to workability, the type of adherend, and the like.

  In addition, as the total area (area of all fiber convex structure part) of the site | part in which the linear fiber convex structure part is provided in the adhesive layer surface, it does not restrict | limit in particular, For example, the total surface area of an adhesive layer The area is preferably 0.001 to 20% (preferably 0.005 to 15%, more preferably 0.01 to 10%). If the area of all fiber convex structures on the surface of the pressure-sensitive adhesive layer is less than 0.001% with respect to the total surface area of the pressure-sensitive adhesive layer, the effect of reducing the initial adhesive strength is reduced, and reworkability and pasting position correction work are reduced. Sexuality decreases. On the other hand, when the area of the total fiber convex structure on the surface of the pressure-sensitive adhesive layer exceeds 20% with respect to the total surface area of the pressure-sensitive adhesive layer, the reworkability and workability for correcting the attachment position are improved. Adhesive strength to the adherend 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. If the length of the fiber is increased, the adhesive force of the adhesive tape or sheet to the adherend is reduced, which 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 is adhered to the adherend may be low, which is not preferable because reworkability and workability for correcting the attachment position are reduced. 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 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 strength is lowered, and the reworkability and the workability for correcting the attachment position are lowered.

  The method for forming the line-shaped fiber convex structure portion (particularly, the line-shaped fiber raised portion) 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. The flocking processing method is a fiber convex structure transfer that can transfer and form a line-shaped fiber convex structure portion on a predetermined portion of the pressure-sensitive adhesive layer surface of the pressure-sensitive adhesive tape or sheet or the surface of the pressure-sensitive adhesive layer. The present invention can be applied to a predetermined portion of a predetermined surface in the forming sheet. 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, 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, a plurality of release substrates (particularly release films) having a shape corresponding to a portion not forming the line-like fiber convex structure portion, It is preferable to use a peeling base material (particularly a peeling film) having a hollow portion at a position corresponding to a predetermined portion forming the line-shaped fiber convex structure portion.

(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 PSA-based pressure-sensitive adhesive, a polyamide-based pressure-sensitive adhesive, an epoxy-based pressure-sensitive adhesive, a vinyl alkyl ether-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, and a 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 the adhesive component (base polymer), the pressure-sensitive 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 pressure-sensitive 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 other monomer (copolymerizable monomer) copolymerizable with the said (meth) acrylic-acid alkylester is used together with the (meth) acrylic-acid alkylester as needed. Good. Examples of such a copolymerizable monomer include carboxyl group-containing monomers such as (meth) acrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, and isocrotonic acid, or anhydrides thereof; sodium vinyl sulfonate, and the like. 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, 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, a line-like fiber convex structure is formed on the surface of the pressure-sensitive adhesive layer formed on one or both sides of the base material, and the surface of the pressure-sensitive adhesive layer is a release surface on the back side of the base material or a release liner. It may be protected by (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 line-like fiber convex structure part is formed in 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 with 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) having a polysiloxane polymer as a main component. As the silicone release treatment agent, among them, an addition reaction type polysiloxane release treatment agent can be suitably used. The addition reaction type polysiloxane-based release treatment agent can be cured by addition reaction type crosslinking (curing reaction) to form a peelable film, and can exhibit useful release characteristics.

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

  In addition, in the polysiloxane polymer having two or more alkenyl groups, 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. It may be any atom, 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 bonded silicon atoms (silicon atoms to which hydrogen atoms are bonded) is not particularly limited as long as it is two or more.

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

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

  The amount of the polysiloxane polymer having two or more Si-H bonded silicon atoms in the molecule is not particularly limited. For example, the polysiloxane polymer having two or more Si-H bonded silicon atoms in the molecule is used. The number of moles of silicon atoms of the Si—H bond in the polymer (sometimes referred to as “number of moles (X)”) and the number of moles of alkenyl groups in the polysiloxane polymer having two or more alkenyl groups (“number of moles ( Y) ”may be referred to as“ the 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-based release treating agent has the above-described constituent components (for example, a polydimethylsiloxane-based polymer having two or more alkenyl groups in the molecule, and two or more silicon atoms having Si—H bonds in the molecule). Can be prepared by mixing an organic solvent as required. The polysiloxane release treatment agent can be used in a state where a polymer component such as a polysiloxane polymer is dissolved in an organic solvent. The polysiloxane release treatment agent contains known or conventional additives (for example, fillers, antistatic agents, antioxidants, ultraviolet absorbers, plasticizers, colorants (dyes, pigments, etc.)). May be.

  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, when the release liner is used to protect the surface having the line-like fiber convex structure portion of the pressure-sensitive adhesive layer, the release liner has a line-like fiber convex structure portion on the surface of the pressure-sensitive adhesive layer. Since it is formed, it is preferable to have a shape that can protect only the surface where the line-shaped fiber convex structure portion is not formed. For example, the line-shaped fiber convex structure portion is formed. A plurality of release liners having a shape corresponding to the shape of the pressure-sensitive adhesive layer surface, and a line-shaped concave portion (cavity portion or A release liner having a depression or the like can be preferably used.

  In addition, as a method of forming the concave portion of the release liner (particularly, the concave portion due to the hollow portion), for example, a well-known or conventional concave portion forming machine [in particular, various convex structures (protruding structures) and the convex portions A method using a perforation forming machine having a concave structure opposite to the 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 by molding 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 line-like fiber convexity is formed on the surface of the pressure-sensitive adhesive layer on at least one surface of the base material. A double-sided pressure-sensitive adhesive tape or sheet with a base material having a plurality of shaped structures, (2) the pressure-sensitive adhesive layer is formed on one side of the base material as a support, and on the surface of the pressure-sensitive adhesive layer, Adhesive tape or sheet with substrate (single-sided adhesive tape or sheet) having a plurality of line-like fiber convex structures, (3) the adhesive layer has a line-like fiber convex on at least one surface Examples include a substrate-less type double-sided pressure-sensitive adhesive tape or sheet having a plurality of shaped structures and having both sides of the pressure-sensitive adhesive layer protected by one or two release liners.

  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. Moreover, in the case of a double-sided pressure-sensitive adhesive tape or sheet, the line-shaped fiber convex structure portion may be formed only on one surface of the pressure-sensitive adhesive surface, or the line-shaped fiber convex structure portion may be formed on both surfaces of the pressure-sensitive adhesive surface. .

  Furthermore, the pressure-sensitive adhesive tape or sheet may be a pressure-sensitive adhesive tape (rolled body or wound body) wound in a roll shape, as shown in FIG. It may be an adhesive sheet. FIG. 4 is a schematic view showing a pressure-sensitive adhesive tape (rolled body) in the form of a roll having a line-like fiber raised portion on the surface of one pressure-sensitive adhesive layer. In FIG. 4, 1a is the adhesive tape of the form wound by roll shape, 2, 3, 4a-4d, and 6b-6d are the same as the above. In addition, in FIG. 4, the figure in the dotted-line circle is the principal part expansion schematic sectional drawing about the adhesive tape 1a.

  Thus, since the adhesive tape or sheet has a plurality of line-like fiber convex structures on the surface of the pressure-sensitive adhesive layer on at least one side of the support, the line-like fiber convex structures are on the surface. When the surface of the pressure-sensitive adhesive layer side is pasted to the adherend with a small load, it can be temporarily bonded, and after applying a large load after reapplying or correcting the pasting position, Can be firmly bonded. The size of the load applied during temporary bonding is not particularly limited, and is controlled by the height of the line-like fiber convex structure, the fiber thickness of the line-like fiber convex structure, the type of material, and the like. be able to. That is, the adhesive force immediately after the adhesive tape or sheet is attached can be controlled to a desired size by the line-shaped fiber convex structure portion.

(Manufacturing method of adhesive tape or sheet)
The pressure-sensitive adhesive tape or sheet of the present invention can be produced by forming a line-shaped 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, using a flocking method, a method of flocking the surface of the pressure-sensitive adhesive layer on at least one side of the support to form a line-shaped fiber convex structure on the surface of the pressure-sensitive adhesive layer, A fiber convex structure transfer forming sheet capable of transferring and forming a line-shaped fiber convex structure portion on the surface of the pressure-sensitive adhesive layer is superimposed on the surface of the pressure-sensitive adhesive layer, and the surface of the pressure-sensitive adhesive layer is line-shaped. A pressure-sensitive adhesive tape or sheet having a plurality of line-shaped fiber convex structure portions on the surface of the pressure-sensitive adhesive layer can be produced by a method of transferring the fiber convex structure portions.

More specifically, as a method for producing the pressure-sensitive adhesive tape or sheet of the present invention, the pressure-sensitive adhesive tape is formed by forming a line-shaped fiber convex structure portion by any of the following methods (A) to (C). Or the method of manufacturing a sheet | seat etc. are mentioned.
(A) In a state where a plurality of release substrates are overlapped on the surface of the pressure-sensitive adhesive layer with a plurality of line intervals, between adjacent release substrates or between adjacent release substrates and between the release substrate and the pressure-sensitive adhesive The surface of the pressure-sensitive adhesive layer that is exposed in a line shape between the ends of the surface of the layer is subjected to flocking to form a line-shaped fiber convex structure portion. (B) A line-shaped cavity portion is formed. In a state where the release substrate having the surface of the pressure-sensitive adhesive layer is superposed on the surface of the pressure-sensitive adhesive layer exposed in a line at the line-shaped cavity of the release substrate, Forming the fiber convex structure part (C) A fiber convex structure transfer forming sheet capable of transferring and forming the line-shaped fiber convex structure part on the surface of the pressure-sensitive adhesive layer is stacked on the surface of the pressure-sensitive adhesive layer. In addition, to transfer the line-shaped fiber convex structure to the surface of the adhesive layer Ri to form a line-shaped fiber convex structure section

  In addition, the fiber convex structure transfer sheet used in the manufacturing method (C) (that is, the fiber convex structure transfer capable of transferring and forming the line-shaped fiber convex structure portion on the surface of the pressure-sensitive adhesive layer) As the sheet for forming), at least one surface has a function as a peeling surface for the pressure-sensitive adhesive layer on which the line-shaped fiber convex structure is transferred, and the pressure-sensitive adhesive layer is provided on the peeling surface side. It has a plurality of line-shaped transfer-forming fiber convex structures (sometimes referred to as “line-shaped transfer-forming fiber convex structures”) to transfer and form line-shaped fiber convex structures on the surface. Examples thereof include a fiber convex structure transfer sheet.

  In the said manufacturing method (A) and (B), flocking process is directly given to the adhesive layer in an adhesive tape or a sheet | seat, and the line-shaped fiber convex-shaped structure part is formed, on the other hand, the said manufacturing method ( In C), the flocked adhesive layer in the pressure-sensitive adhesive tape or sheet is not directly subjected to flocking, but is used to transfer and form a line-shaped fiber convex structure on the pressure-sensitive adhesive layer surface in the pressure-sensitive adhesive tape or sheet. The line-shaped fiber convex structure portion is formed on the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer of the sheet using the fiber convex structure transfer-forming sheet in which a plurality of line-shaped transfer-forming fiber convex structure portions are formed.

  In addition, as a sheet | seat for fiber convex structure transcription | transfer formation used in the said manufacturing method (C), a flocking process is given to a predetermined surface and a line-like fiber convex structure part is transcribe | transferred and formed on the surface of an adhesive layer. Can be produced by forming a line-shaped transfer-forming fiber convex structure that can be used.

  In the said manufacturing method (A) and (B), the flocking method at the time of performing flocking processing to the adhesive layer in an adhesive tape or a sheet | seat, and the sheet | seat for fiber convex structure transfer formation used in the said manufacturing method (C) 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 object to be transplanted (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 "."

  In the manufacturing method (A), a plurality of release substrates that can be superimposed on the surface of the pressure-sensitive adhesive layer with a linear interval are 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 described above, when a plurality of release parts for forming a space part are used, between the adjacent release parts for forming a space part among the plurality of release parts for forming a space part, or between the surfaces of the release substrate and the pressure-sensitive adhesive layer. A line-shaped fiber convex structure portion can be formed in a line-shaped space between the end portions. 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. Flocking process (especially electrostatic flocking process) between the materials or on the surface of the adhesive layer exposed in a line between the peeling substrate for forming the space and the edge of the surface of the adhesive layer By applying the above, it is possible to form a line-shaped fiber convex structure portion. 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. .

  Moreover, in the said manufacturing method (B), the peeling base material which has a line-shaped cavity part is used. As the release substrate, for example, a release substrate having at least one surface as a release surface and having a line-shaped cavity (sometimes referred to as “cavity-containing release substrate”) can be used. As described above, when the cavity-containing release substrate is used, the line-shaped fiber convex structure can be formed at a site corresponding to the line-shaped cavity formed in the cavity-containing release substrate. Specifically, the release surface of the cavity-containing release substrate is exposed in a line at the cavity of the cavity-containing release substrate in a state where the release surface is superimposed on the surface of the pressure-sensitive adhesive layer of the adhesive tape or sheet. By performing flocking processing (particularly electrostatic flocking processing) on the surface portion of the pressure-sensitive adhesive layer, it is possible to form a line-shaped fiber convex structure portion. Therefore, as the cavity-containing release substrate, a release substrate having a cavity at a position corresponding to a site forming the line-shaped fiber convex structure on the surface of the adhesive layer of the adhesive tape or sheet. It is important to use.

(Peeling substrate)
Thus, in the said manufacturing method (A) and (B), the peeling base material used when performing a flocking process directly on the adhesive layer surface (the peeling base material for space part formation, a cavity part containing peeling group) 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 case of the release substrate for forming a space part, it is important that the release substrate has a shape that can be superimposed on the surface of the pressure-sensitive adhesive layer with a linear interval. It is. On the other hand, in the case of a cavity-containing release substrate, it is important to further have a linear cavity. 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 (for example, 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 by 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 film, etc.), olefin resin films (polyethylene film, polypropylene film, etc.), polyvinyl chloride films, polyimide films, polyamide films (nylon film), fluorine films (polyethylene). 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 co-extruded 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) having a polysiloxane polymer as a main component. As the silicone release treatment agent, among them, an addition reaction type polysiloxane release treatment agent can be suitably used. The addition reaction type polysiloxane-based release treatment agent can be cured by addition reaction type crosslinking (curing reaction) to form a peelable film, and can exhibit useful release characteristics. 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 agent, a commercial product similar to the case of the pressure-sensitive adhesive tape or release liner for sheets can be used.

  A release treatment layer in a release substrate (such as a release substrate for forming a space part or a cavity-containing release substrate) can be formed in the same manner as in the case of the pressure-sensitive adhesive tape or the release liner for a sheet, 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 line-like fiber convex structure part, etc., it can select suitably.

  Among the release substrates, the space forming release substrate is used with a linear interval. The linear space between the adjacent release bases for forming the space part and between the release base and the end of the surface of the pressure-sensitive adhesive layer has a linear fiber convex structure on the surface of the pressure-sensitive adhesive layer. Since a part is used when forming a part, a plurality of release parts for forming a space part should be used so that a 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 line-shaped 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 surface of the pressure-sensitive adhesive layer and the pressure-sensitive adhesive layer, Depending on the size and number, the position of the line-shaped fiber convex structure portion on the pressure-sensitive adhesive layer surface and the size and number of the line-shaped fiber convex structure portion can be controlled.

  On the other hand, among the release substrates, the cavity-containing release substrate has a line-shaped cavity. Since such a line-shaped cavity is used when forming a line-shaped fiber convex structure on the surface of the pressure-sensitive adhesive layer, it corresponds to a line-shaped fiber-shaped convex structure formed on the surface of the pressure-sensitive adhesive layer. It is important that it is provided at the site to be. Therefore, the position to form the line-shaped cavity of the cavity-containing release substrate, the position to form the line-shaped fiber convex structure on the pressure-sensitive adhesive layer surface, depending on the size and number of the line-shaped cavity, The size and number of the line-shaped fiber convex structure portions can be controlled.

  As a method for forming the line-shaped cavity of the release substrate containing the cavity, a formation method similar to the case of the concave portion in the pressure-sensitive adhesive tape or sheet release liner, for example, a known or conventional hole forming machine [among others, , A perforation processing method using a convex structure (projection-shaped structure) of various shapes and a concave structure opposite to the convex structure], a perforation processing method using heat or light (for example, a thermal head, And a method of punching with a halogen lamp, a xenon lamp, a flash lamp, a laser beam, etc.) and a molding method using a mold (for example, a mold having a convex portion). In addition, in the perforation processing method (perforation processing method using a hole forming machine, perforation processing method using heat or light, etc.), a perforating process is performed on a release substrate that does not have a line-shaped cavity. As described above, a release substrate such as a known release liner as described above can be used as the release substrate that does not have a line-shaped cavity. .

  Such a release substrate (such as a space-forming release substrate or a cavity-containing release substrate) may be peeled off after forming the line-shaped fiber convex structure, but as it is, a release liner. It is preferably used as (adhesive tape or release liner for sheet). 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.

  When using the release substrate for forming a space part as a release liner, when using the adhesive tape or sheet on which the line-shaped fiber convex structure is formed, when peeling the release substrate for forming a space part, Adhesive tape or sheet having an adhesive strength lower than that of the adhesive tape or adhesive layer of the adhesive tape or sheet on which the fiber-like convex structure is formed (sometimes referred to as "peeling adhesive tape") ) Can be used. Under the present circumstances, it is important to use what has only one surface as a peeling surface (surface which has peelability with respect to an adhesive layer) as a peeling base material for space part formation. In other words, when a space part forming release substrate having a release surface on only one side is used, the space part forming release substrate is bonded and a line-shaped fiber convex structure part is formed. In the tape or sheet, the surface on which the line-shaped fiber convex structure portion is formed (which may be referred to as “line-shaped fiber convex structure-side surface”) is the non-peeling of the space-forming release substrate. It has a surface (surface that does not have releasability to the adhesive layer) and a line-shaped fiber convex structure part, and a pressure-sensitive adhesive tape for peeling is applied to the surface of the line-shaped fiber convex structure part. When peeled off, the line-like fiber convex structure part is stuck more strongly to the adhesive tape or sheet formed by flocking than the peeling adhesive tape, so the release substrate for forming the space part was stuck. The peeling adhesive tape can be peeled off . Accordingly, even if a plurality of space portion forming release base materials are used, the space portion forming release base material can be peeled at a time by using the peeling pressure-sensitive adhesive tape. A part of the line-shaped fiber convex structure may be attached to the peeling adhesive tape and peeled off together with the peeling adhesive tape, but most of the line-shaped fiber convex structure is the original pressure-sensitive adhesive layer. Therefore, the function of the pressure-sensitive adhesive tape or sheet having the line-shaped fiber convex structure is not lost.

  Furthermore, in the manufacturing method (C), a fiber convex structure transfer forming sheet is used. The fiber convex structure transfer forming sheet is not particularly limited as long as it has a configuration in which the line-shaped fiber convex structure portion is transferred by being bonded to the surface of the pressure-sensitive adhesive layer. The surface has a function as a release surface for the pressure-sensitive adhesive layer on which the line-shaped fiber convex structure portion is transferred, and the line-shaped fiber convex structure portion is provided on the pressure-sensitive adhesive layer surface on the release surface side. A fiber convex structure transfer forming sheet having a configuration having a line-shaped transfer convex fiber convex structure portion (line-shaped transfer forming fiber convex structure portion) for transfer formation can be used. In this way, when the fiber convex structure transfer forming sheet is used, the line-like fiber convex structure is formed at the site corresponding to the line-shaped transfer forming fiber convex structure portion formed on the fiber convex structure transfer forming sheet. The part can be formed. Specifically, as shown in FIG. 5, the release surface of the fiber convex structure transfer forming sheet is superimposed on the surface of the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer of the sheet, and the line-shaped transfer forming fiber is bonded by pressure bonding or the like. By transferring the convex structure portion, the line-shaped fiber convex structure portion can be formed. Therefore, as the fiber convex structure transfer forming sheet, a line convex structure for line transfer formation is formed at a position corresponding to a portion where the line-shaped fiber convex structure portion is formed on the surface of the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer of the sheet. It is important to use a fiber convex structure transfer forming sheet having a portion.

  FIG. 5 shows a partial example of a state in which the line-shaped fiber convex structure portion is transferred and formed by laminating the fiber convex structure transfer forming sheet of the present invention on the surface of the pressure-sensitive adhesive tape or the adhesive layer of the sheet. FIG. 5A shows a state in which the fiber convex structure transfer forming sheet is bonded to the surface of the pressure-sensitive adhesive tape or the pressure-sensitive adhesive layer of the sheet, and FIG. It shows a state in which the sheet-like structure transfer forming sheet is peeled off after being bonded, and the line-like fiber convex structure portion is transferred and formed on the surface of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape or sheet. In FIG. 5, 7 is a fiber convex structure transfer forming sheet, 7 a is a release liner (fiber convex structure transfer forming sheet release liner) in the fiber convex structure transfer forming sheet 7, and 7 b is a fiber convex structure transfer. Pressure-sensitive adhesive layer in the forming sheet 7 (transfer convex fiber convex structure holding adhesive layer), 7c is a substrate in the fiber convex structure transfer forming sheet 7 (fiber convex structure transfer forming sheet base material), 7d Is a line-shaped space between the release liners 7a for adjacent fiber convex structure transfer forming sheets, 8 is a line-shaped fiber raised portion for transferring and forming the pressure-sensitive adhesive layer, 9 adhesive tape or sheet, and 9a is an adhesive tape Alternatively, the pressure-sensitive adhesive layer in the sheet 9 (pressure-sensitive adhesive tape or pressure-sensitive adhesive layer for sheet), 9a1 is the surface of the pressure-sensitive adhesive tape or pressure-sensitive adhesive layer 9a, and 9b is the base material in the pressure-sensitive adhesive tape or sheet 9 -Loop or sheet substrate; a simply referred to as "substrate").

  The fiber convex structure transfer forming sheet 7 has a fiber convex structure-holding adhesive layer 7b for transfer formation formed on one surface of a fiber convex structure transfer forming sheet substrate 7c, and the fiber convex structure for transfer forming is formed. A release liner 7a for a fiber convex structure transfer forming sheet is laminated on the part holding adhesive layer 7b with a line-shaped space 7d therebetween, and is adjacent to the release liner 7a for a fiber convex structure transfer forming sheet. On the surface of the transfer forming fiber convex structure holding pressure-sensitive adhesive layer 7b in the line-shaped space portion 7d, a line-like fiber raised portion 8 for transfer formation to the pressure-sensitive adhesive tape or sheet adhesive layer 9a is formed. ing. 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. 5 (a), the fiber-like structure transfer forming sheet 7 is bonded to the adhesive tape or the sheet 9 (particularly, by bonding after bonding), the line-like fiber. The raised portions 8 can be transferred to the surface 9a1 of the pressure-sensitive adhesive tape or sheet pressure-sensitive adhesive layer 9a.

(Fiber convex structure transfer sheet)
Thus, in the said manufacturing method (C), as a fiber convex structure transfer formation sheet used when transferring a line-shaped fiber convex structure part, at least one surface turns into a peeling surface with respect to an adhesion surface. Furthermore, it is important to have a line-shaped transfer convex fiber convex structure for transferring and forming a line-shaped fiber convex structure on the surface of the pressure-sensitive adhesive layer on the release surface side. The line-shaped transfer-forming fiber convex structure has a structure corresponding to the line-shaped fiber convex structure. Of course, the fiber type, length, thickness, etc. in the line-shaped transfer forming fiber convex structure are the same as those of the line-shaped fiber convex structure. In addition, the method for forming the line-shaped transfer forming fiber convex structure portion (particularly, the line-shaped transfer forming fiber raised portion) on the line-shaped fiber convex structure transfer forming sheet is not particularly limited, As described above, a flocking method (particularly, an electrostatic flocking method) can be suitably used. As the electrostatic flocking processing method, any of an up method, a down method, and a side method may be used.

  Examples of the fiber convex structure transfer forming sheet include a fiber convex structure transfer forming sheet having a structure having a line-shaped transfer forming 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 fiber convex structure portion for line transfer formation. (2) One side of the base material as a support is a release surface, and the release surface has a fiber-like structure for line transfer formation. The sheet | seat for fiber convex structure transcription | transfer formation of the structure currently performed can be illustrated. 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 a fiber for line transfer formation on both sides or one side. The surface on which the line-shaped transfer forming fiber convex structure portion can be formed has a peeled surface partially exposed, and the line-shaped transfer forming fiber convex structure portion is The surface that is not formed is entirely a peeled surface. In addition, the fiber convex structure transfer forming sheet having the configuration (2) has the fiber convex structure portion for line transfer formation only on one side, and the other side is the surface of the substrate or another layer ( Pressure-sensitive adhesive layer).

  As such a fiber convex structure transfer forming sheet, in particular, a line-shaped concave portion is formed on the peeling surface side, and the transfer-forming fiber convex structure portion is provided in the line-shaped concave portion. A fiber convex structure transfer forming sheet having a structure is suitable, and in particular, the adhesive layer is more adhesive than the adhesive layer that transfers and forms the fiber convex structure portion at the bottom of the line-shaped concave portion on the release surface side. A fiber convex structure transfer forming sheet that is low and has a transfer-forming fiber convex structure holding adhesive layer that holds the transfer-forming fiber convex structure 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. The transfer forming fiber convex structure holding adhesive layer may not be formed at the bottom of the line-shaped 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. 6, the base material and the transfer convex fiber convex structure portion provided on the base material are retained. It is formed by an adhesive layer and a plurality of release substrates provided on the transfer-forming fiber convex structure holding adhesive layer with line intervals, and the line-shaped transfer forming fiber convex The structure has a linear space (recessed portion) between adjacent release substrates, or between adjacent release substrates and between the release substrate and the end of the surface of the transfer-forming fiber convex structure holding adhesive layer. ) And a fiber convex structure transfer forming sheet having a configuration formed on the surface of the transfer forming fiber convex structure holding adhesive layer (sometimes referred to as “fiber convex structure transfer forming sheet (a)”). ), (B) As shown in FIG. 7, provided on the base material and the base material It is formed by a copy-forming fiber convex structure holding adhesive layer and a release substrate having a line-shaped cavity provided on the transfer-forming fiber convex structure holding adhesive layer. Fiber convex structure transfer formation in which the transfer convex fiber convex structure is formed in the line-shaped cavity (concave) of the release substrate and on the surface of the transfer convex fiber convex structure holding adhesive layer Sheet (sometimes referred to as “fiber convex structure transfer forming sheet (b)”), (c) a substrate having a line-shaped uneven structure as shown in FIG. 8, and the substrate The line-shaped transfer is formed by a peeling treatment layer formed on the line-shaped convex portion of the substrate and a fiber-forming structure holding adhesive layer for transfer formation formed on the bottom surface of the line-shaped concave portion of the substrate. The forming fiber convex structure portion is formed in the line-shaped concave portion of the substrate and rolled. Examples include a fiber convex structure transfer forming sheet having a configuration formed on the surface of the forming fiber convex structure holding adhesive layer (sometimes referred to as “fiber convex structure transfer forming sheet (c)”). .

  FIG. 6 is a schematic view partially showing an example of the fiber convex structure transfer forming sheet of 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, 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 Convex structure transfer forming sheet base material), 10d is a linear space between adjacent fiber convex structure transfer forming sheet release liners 10a, and 11 is a line fiber for transfer forming on the adhesive layer. It is a raised part. 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 plurality of release liners for fiber convex structure transfer forming sheet 10a are laminated on the convex structure holding adhesive layer 10b at intervals of a line, and the release liner 10a for fiber convex structure transfer forming sheet is bonded. Or the convexity of the fiber for transfer formation in the linear space portion 10d between the release liner 10a for the convexity structure transfer forming sheet and the end of the surface of the convex convex structure holding adhesive layer 10b for transfer formation. A line-shaped fiber raised portion 11 for transferring and forming on the pressure-sensitive adhesive layer is formed on the surface of the shaped structure holding pressure-sensitive adhesive layer 10b.

  FIG. 7 is a schematic view partially showing an example of the fiber convex structure transfer forming sheet of the present invention, and FIG. 7A is a schematic plan view seen from the upper surface of the fiber convex structure transfer forming sheet, FIG. 7 (b) is a schematic sectional view taken along line XY in FIG. 7 (a). In FIG. 7, 12 is a fiber convex structure transfer forming sheet [fiber convex structure transfer forming sheet (b)], and 12a is a release liner (fiber convex structure transfer forming sheet 12). A release liner for the sheet), 12b is an adhesive layer in the fiber convex structure transfer forming sheet 12, and a base material (fiber) in the fiber convex structure transfer forming sheet 12c. Convex structure transfer forming sheet base material), 12d is a line-shaped cavity portion in the fiber convex structure transfer forming sheet release liner 12a, and 13 is a line-shaped fiber raised portion for transfer formation to the adhesive layer. is there. The fiber-convex structure transfer forming sheet 12 has a fiber-forming structure-holding adhesive layer 12b for transfer formation formed on a substrate 12c for fiber-convex structure transfer forming, and the transfer-forming fiber. On the convex structure holding adhesive layer 12b, a fiber convex structure transfer forming sheet release liner 12a is bonded, and the fiber convex structure transfer forming sheet release liner 12a has a linear cavity 12d. On the surface of the transfer forming fiber convex structure holding pressure-sensitive adhesive layer 12b, a line-shaped fiber raised portion 13 for transferring and forming the pressure-sensitive adhesive layer is formed.

  FIG. 8 is a schematic view partially showing an example of the fiber convex structure transfer forming sheet of the present invention, and FIG. 8A is a schematic plan view seen from the upper surface of the fiber convex structure transfer forming sheet. FIG.8 (b) is a schematic sectional drawing of the XY line in Fig.8 (a). In FIG. 8, 14 is a fiber convex structure transfer forming sheet [fiber convex structure transfer forming sheet (c)], and 14a is a substrate having a line-shaped uneven structure (for forming an uneven part-containing fiber convex structure transfer). Sheet base material), 14a1 is a line-shaped convex part of the sheet-like base material 14a for concavo-convex part-containing fiber convex structure transfer formation, and 14a2 is a line shape of the sheet-like base material 14a for concavo-convex part-containing fiber convex structure transfer forming 14b is a release treatment layer formed on the line-shaped convex part 14a1 of the substrate 14a for concave-convex part-containing fiber convex structure transfer forming sheet, and 14c is a base for the convex-concave part-containing fiber convex structure transfer forming sheet. The transfer-forming fiber convex structure holding adhesive layer 15 formed on the bottom surface of the line-shaped recess 14a2 of the material 14a, 15 is a line-like fiber raised portion for transferring and forming the adhesive layer. In the fiber convex structure transfer forming sheet 14, the peeling treatment layer 14b is formed on the line-shaped convex portion 14a1 of the concave-convex portion-containing fiber convex structure transfer forming sheet substrate 14a, and the line-shaped concave portion 14a2. Is formed on the surface of the transfer-formed fiber convex structure holding adhesive layer 14c in the line-shaped recess 14a2, and is transferred to the adhesive layer. The line-like fiber raising part 15 for doing is formed.

  Specifically, the fiber convex structure transfer sheet (a) having the configuration (a) and the fiber convex structure transfer sheet (b) having the configuration (b) are shown in FIGS. 6 and 7. 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 Between the release liner (the release liner for the fiber convex structure transfer forming sheet) provided on the shape structure holding adhesive layer and the adjacent release liner for the fiber convex structure transfer forming sheet, or between the adjacent release substrates. And a line-shaped space between the release liner for the fiber convex structure transfer forming sheet and the end of the surface of the fiber convex structure holding adhesive layer for transfer formation, or the fiber convex structure transfer sheet release In a line-shaped recess due to a line-shaped cavity in the liner One and a transfer forming fiber convex structure section held formed on the adhesive layer surface a line-like transfer-forming fiber convex structure section. In such a fiber convex structure transfer forming sheet (a) or fiber convex structure transfer forming sheet (b), as a fiber convex structure transfer forming sheet substrate, a plastic such as a plastic film or sheet is used. 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).

  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 sheet base material for the purpose of improving the adhesion with the fiber convex structure holding adhesive layer for transfer formation, etc. In addition, 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.

  Further, in the fiber convex structure transfer forming sheet (a) and the fiber convex structure transfer forming sheet (b), as the fiber convex structure holding retaining adhesive layer for transfer formation, a linear fiber convex structure portion is used. It is important that the adhesiveness (adhesive strength) is lower than that of the pressure-sensitive adhesive layer (such as a pressure-sensitive adhesive tape or a pressure-sensitive adhesive layer for a sheet) on which the film is transferred. Here, the fiber convex structure holding adhesive layer for transfer formation is lower in adhesiveness than the pressure-sensitive adhesive layer for transferring and forming the line fiber convex structure portion. This means that the adhesive strength of is smaller than the adhesive strength of the 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 pressure-sensitive 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-forming fiber convex structure holding adhesive layer measured under the above-described conditions should be smaller than the adhesive force of the pressure-sensitive adhesive layer that transfers and forms the line-like fiber convex structure portion. However, from the viewpoint of transferability of the line-shaped fiber convex structure portion, the difference in adhesive strength between the two is desirably 0.1 N / 20 mm or more (preferably 0.5 N / 20 mm or more). Such a transfer-formed fiber convex structure holding adhesive layer is not particularly limited as long as it can exhibit lower adhesiveness than the pressure-sensitive adhesive layer for transferring and forming the line-shaped fiber convex structure, and is known in the art. For example, the adhesive may be composed of the same adhesive as the adhesive constituting the adhesive layer for transferring and forming the line-shaped fiber convex structure. Accordingly, 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. 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.

  In addition, it is also important that the fiber convex structure holding adhesive layer for transfer formation is an adhesive layer capable of holding the fiber convex structure for line transfer formation.

  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, Method of applying pressure-sensitive adhesive (application method), applying pressure-sensitive adhesive on a release film such as a release liner to form a pressure-sensitive adhesive layer, and then forming the pressure-sensitive adhesive layer on a substrate for a fiber convex structure transfer forming sheet Examples thereof include a method of transferring to the top (transfer method).

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

  Furthermore, in the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (b), 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 (b) 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 transfer liner forming release liner substrate can be suitably used. As such a release liner base material for transfer forming sheet, polyester film (polyethylene terephthalate film, etc.), olefin resin film (polyethylene film, polypropylene film, etc.), polyvinyl chloride film, polyimide film, polyamide film (nylon film) ), 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 or coextrusion (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) having a polysiloxane polymer as a main component. As the silicone release treatment agent, among them, an addition reaction type polysiloxane release treatment agent can be suitably used. The addition reaction type polysiloxane-based release treatment agent can be cured by addition reaction type crosslinking (curing reaction) to form a peelable film, and can exhibit useful release characteristics.

  The addition reaction type polysiloxane 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 agent, a commercial product similar to the case of the pressure-sensitive adhesive tape or 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, 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.

  In particular, in the fiber convex structure transfer forming sheet (b), the line-shaped transfer forming fiber convex structure portion is formed in the line-shaped cavity of the fiber convex structure transfer forming sheet release liner. The fiber convex structure holding adhesive layer is formed on the surface. Therefore, as the release liner for the fiber convex structure transfer forming sheet, the release liner for the fiber convex structure transfer forming sheet was formed from the point of transferability of the fiber convex structure portion for line transfer formation. It is preferable that the thickness of the outer peripheral region of the line-shaped cavity is equal to or greater than the height of the line-shaped transfer-forming fiber convex structure.

  In the fiber convex structure transfer forming sheet (b), as a method of forming a line-shaped cavity of the fiber convex structure transfer forming sheet release liner, a concave portion in the pressure-sensitive adhesive tape or sheet release liner is used. And the same formation method as the case of the line-shaped cavity in the cavity-containing release substrate, for example, a known or conventional hole forming machine [in particular, various convex structures (protruding structures) And a punching method using a heat or light beam (for example, a thermal head, a halogen lamp, a xenon lamp, a flash lamp, a laser beam, etc.). A method of drilling), and a molding method using a mold (for example, a mold having a convex portion). In the perforating method (perforating method using a hole forming machine, perforating method using heat or light, etc.), a perforating process is performed on a release liner that does not have a line-shaped cavity. A release liner for a fiber convex structure transfer forming sheet having a line-shaped cavity is produced, and a release liner having no line-shaped cavity is a known release liner as described above A peeling substrate such as can be used.

  In the release liner for the fiber convex structure transfer forming sheet, the part that forms the line-shaped cavity is the part corresponding to the line-shaped fiber convex structure part that is partially transferred to the pressure-sensitive adhesive layer surface. It is important to be.

  As described above, the fiber convex structure transfer forming sheet (a) and the fiber convex structure transfer forming sheet (b) have the fiber convex structures adjacent to each other. Between the release liners for structural transfer forming sheets, or between adjacent release substrates, and between the release liner for fiber convex structure transfer forming sheets and the end of the surface of the fiber convex structure holding adhesive layer for transfer forming It is formed in the line-shaped recessed part by the line-shaped cavity part in the line-shaped space part or the release liner for fiber-convex structure transfer-forming sheet, and on the surface of the transfer-forming fiber-convex structure part holding adhesive layer. As described above, the line-shaped transfer convex fiber convex structure portion has a structure corresponding to the line-shaped fiber convex structure portion, and its composition (fiber type, length, thickness, etc.). ) Is the same as the line-shaped fiber convex structure.

  As described above, the line-shaped transfer forming fiber convex structure portion is formed by using the flocking method, and the line-shaped concave portion (between adjacent or adjacent release liners for the fiber convex structure transfer forming sheet). Line-shaped recesses or fibers between the release substrates and between the release liner for the fiber convex structure transfer forming sheet and the end of the surface of the fiber convex structure holding adhesive layer for transfer formation It can be formed by flocking the surface of the transfer-forming fiber convex structure holding adhesive layer in the line-shaped cavity in the release liner for the convex 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 "."

  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 For a fiber convex structure transfer forming sheet adjacent to a laminate in which a fiber convex structure transfer forming sheet release liner provided on the forming fiber convex structure holding adhesive layer is laminated in this order. Between release liners, between adjacent release liners for fiber convex structure transfer forming sheets, and between release liners for fiber convex structure transfer forming sheets and the end of the surface of the fiber convex structure holding adhesive layer for transfer formation On the surface of the adhesive layer holding the convex fiber structure for transfer formation exposed in the linear concave part due to the linear cavity in the release liner for fiber convex structure transfer forming sheet , Flocking (especially By applying electrostatic flocking processing, a line-shaped transfer forming fiber convex structure portion may be formed on the surface portion of the transfer-forming fiber convex structure holding adhesive layer corresponding to the line-shaped concave portion. it can.

  In addition, as a release liner for sheet | seats for fiber convex structure transfer formation, the site | part corresponding to the line-shaped fiber convex structure part transcribe | transfer-formed on the adhesive layer surface is adjacent to the release liner for sheet | seats for fiber convex structure transfer formation. Or between adjacent release liners for the fiber convex structure transfer forming sheet and between the release liner for the fiber convex structure transfer forming sheet and the end of the surface of the fiber convex structure holding adhesive layer for transfer forming Transfer forming the release liner for the fiber convex structure transfer forming sheet so that it becomes a line-shaped recess such as a line-shaped cavity in the release liner for the fiber convex structure transfer forming sheet. It is important to bond and use it on the fiber convex structure holding adhesive layer.

  As described above, when the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (b) is used as the fiber convex structure transfer forming sheet, the fiber convex structure transfer forming sheet is used. The position for forming the line-shaped concave portion on the surface of the pressure-sensitive adhesive layer, the position for forming the line-shaped concave portion on the release liner for the sheet, the size and the number of the line-shaped concave portions, and the line-shaped fiber convex shape The size and number of structures can be controlled.

  On the other hand, the fiber convex structure transfer forming sheet (c) having the above-described configuration (c) is a substrate having a line-shaped uneven structure (uneven portion-containing fiber convex structure transfer formation, as shown in FIG. 8). Sheet base material), a release treatment layer formed on the line-shaped convex portion of the uneven portion-containing fiber convex structure transfer forming sheet base material, and an uneven portion-containing fiber convex structure transfer forming sheet. The transfer convex fiber convex structure holding pressure-sensitive adhesive layer formed on the bottom surface of the line-shaped concave portion of the base material, and the transfer formation within the line concave portion of the concave-convex-containing fiber convex structure transfer base sheet. Fiber convex structure portion for forming a line-shaped transfer formed on the surface of the fiber convex structure portion holding adhesive layer.

  In such a fiber convex structure transfer forming sheet (c), the substrate for an uneven portion-containing fiber convex structure transfer forming sheet is particularly a substrate having a line-like uneven structure (uneven portion). Not limited. As the base material for the convex-concave portion-containing fiber convex structure transfer forming sheet, the fiber convex structure transfer formation in the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (b) 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 (b) 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 (b). 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 (b). 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 line-shaped convex part can be selected from a range of, for example, about 10 to 1000 μm, preferably about 30 to 500 μm.

  Moreover, in the uneven | corrugated | grooved part containing fiber convex structure transcription | transfer sheet | seat base material, it does not restrict | limit especially as a depth of a line-shaped recessed part, According to the shape of the fiber convex structure part for line-shaped transfer formation, etc. It can be selected appropriately. From the viewpoint of transferability of the line-shaped transfer forming fiber convex structure, the depth of the line-shaped recess is approximately equal to or less than the height of the line transfer forming fiber convex structure. It is preferable.

  The method for forming the line-shaped uneven portion of the substrate for an uneven-part-containing fiber convex structure transfer forming sheet is not particularly limited. In addition, as a base material for a sheet | seat for uneven | corrugated | grooved part containing fiber convex structure transfer formation, by forming a line-shaped recessed part in the base material which has a smooth surface which does not have a line-shaped uneven | corrugated | grooved part, a line shape The base material which has the uneven | corrugated | grooved part can be used. Therefore, for example, a substrate similar to the fiber convex structure transfer forming sheet base in the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (b) is publicly known or known. A method of forming a line-shaped recess using a conventional recess forming machine, a method of forming a line-shaped recess using heat or light (for example, a line formed by a thermal head, a halogen lamp, a xenon lamp, a flash lamp, a laser beam, etc. By forming a line-shaped concave portion at a predetermined portion of the surface by a method using a molding process using a mold (for example, a mold having a line-shaped convex portion). The base material for sheet | seats for a part containing fiber convex structure transcription | transfer formation can be produced.

  In addition, in the base material for uneven | corrugated | grooved part containing fiber convex structure transfer formation sheet, as a site | part which forms a line-shaped recessed part, it is a site | part corresponding to the line-shaped fiber convex structure part made to transfer-form on the adhesive layer surface. This is very important.

  Moreover, in the said fiber convex structure transfer formation sheet (c), 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 (b). 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 forming sheet (b), 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 (b). For example, the release treatment layer can be formed by a method in which a release treatment agent is applied to the line-like protrusions of the uneven-part-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.

  Further, in the fiber convex structure transfer forming sheet (c), 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. In the same way as the transfer forming fiber convex structure holding adhesive layer in the forming sheet (b), it is more adhesive than the pressure sensitive adhesive layer (adhesive tape or pressure sensitive adhesive layer for sheet, etc.) for transferring and forming the line fiber convex structure. It is important that the property is low. As the fiber-convex structure transfer-holding adhesive layer for transfer formation in the fiber-convex structure transfer-forming sheet (c), the fiber-convex structure transfer-forming sheet (a) or the fiber-convex structure transfer-forming sheet ( The adhesive which is the same as the adhesive that constitutes the transfer-forming fiber convex structure holding adhesive layer in b) (for example, rubber adhesive, acrylic adhesive, polyester adhesive, urethane adhesive, polyamide adhesive) 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 adhesive layer for transfer formation in the fiber-convex structure transfer-forming sheet (c), the fiber-convex structure transfer-forming sheet (a) or 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 line-shaped transfer forming fiber convex structure.

  The fiber convex structure transfer forming sheet (a) and the fiber convex structure transfer forming method are as follows. The same as in the case of the sheet (b) for use. For example, the transfer-forming fiber convex structure holding adhesive layer can be formed by a method of applying a pressure-sensitive adhesive to the line-shaped concave portion of the concavo-convex-containing fiber convex structure transfer forming sheet substrate.

  As described above, in the fiber convex structure transfer forming sheet (c), the line convex structure for forming a line-shaped transfer has a line-like shape of the substrate for a convex-concave-containing fiber convex structure-transfer forming sheet. It is formed in the concave portion and on the surface of the transfer-forming fiber convex structure holding adhesive layer. The line-shaped transfer forming fiber convex structure portion is similar to the line-shaped transfer forming fiber convex structure portion in the fiber convex structure transfer forming sheet (a) or the fiber convex structure transfer forming sheet (b). For example, it can be formed using a flocking method (particularly an electrostatic flocking method).

  Specifically, it has a line-shaped concavo-convex part, a release treatment layer is formed on the line-shaped convex part, and a transfer-forming fiber convex structure holding adhesive layer is formed on the bottom surface of the line-shaped concave part By applying flocking (particularly electrostatic flocking) to the surface of the transfer-forming fiber convex structure holding adhesive layer, the uneven portion-containing fiber convex structure transfer forming sheet substrate A fiber-like convex structure for line-shaped transfer formation is formed in a portion of the surface of the adhesive layer for holding the convex-shaped fiber structure for transfer formation in the line-shaped concave portion of the base material for the fiber-shaped structural transfer-forming sheet. be able to.

  As described above, when the fiber convex structure transfer forming sheet (c) is used as the fiber convex structure transfer forming sheet, the line-shaped concave portion of the base material for the fiber convex structure transfer forming sheet is provided. Depending on the position to be formed and the size and number of the line-shaped concave portions, the position and the size and number of the line-shaped fiber convex structures on the pressure-sensitive adhesive layer surface can be controlled. it can.

  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 line-like 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). May be peeled off, but can also be used as it is as a release liner.

  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), a line is formed in a line-shaped recess. Since the fiber-like convex structure portion is formed, the fiber raised portion in which the fibers are 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.

  In the pressure-sensitive adhesive tape or sheet of the present invention, a plurality of line-shaped fiber convex structures are formed on the surface of the pressure-sensitive adhesive layer. As described above, after overlapping the adherend, a small load is temporarily applied. 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 that require re-bonding or correction of the attachment position after temporary bonding. It is useful as an adhesive tape or sheet (adhesive tape or sheet for attaching a flooring material) used for bonding to a floor. In addition, when using as an adhesive tape or sheet for flooring material sticking, as an adhesive tape or sheet, it has an adhesive layer on both surfaces of a base material, and a line-like fiber on the surface of the adhesive layer of one side of a base material Double-sided pressure-sensitive adhesive tape or sheet with a substrate having a convex structure [that is, an adhesive layer having a line-like fiber convex structure on the surface of one side of the substrate (line-like fiber convex) (Structure part forming pressure-sensitive adhesive layer) was formed, and a pressure-sensitive adhesive layer having no fiber convex structure part on the surface (fiber convex structure non-forming pressure-sensitive adhesive layer) was formed on the other surface of the substrate. A double-coated pressure-sensitive adhesive tape or sheet with a base material] can be suitably used.

The method of bonding the flooring material to the floor using the pressure-sensitive adhesive tape or sheet of the present invention is not particularly limited as long as it is a method of bonding the flooring material to the floor via the pressure-sensitive adhesive tape or sheet. A suitable laminating method is suitable.
[Method of bonding flooring material to the floor]
As an adhesive tape or sheet, for example, a linear fiber convex structure-forming pressure-sensitive adhesive layer is provided on one surface of a base material, and a fiber convex structure non-forming pressure-sensitive adhesive layer is provided on the other surface of the base material. Using a double-sided pressure-sensitive adhesive tape or sheet with a base material, and sticking the adhesive surface of the pressure-sensitive adhesive layer side of the pressure-sensitive adhesive tape or sheet to the flooring material; Insert into the place, stick the adhesive surface of the line-like fiber convex structure forming adhesive layer to the floor and temporarily bond it, and after moving the flooring material to a predetermined location along the floor, by strong pressure bonding, The flooring material is firmly bonded to the floor via an adhesive tape or sheet.

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

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

  The release liner A1 was cut into a width of 20 mm to produce a strip-shaped release liner (sometimes referred to as “strip-shaped release liner A1”).

  In addition, a 1% by weight heptane solution of a polydimethylsiloxane-based silicone release treatment agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) is coated on a kraft paper laminated with polyethylene to release a release liner (“ After that, an acrylic pressure-sensitive adhesive (an acrylic pressure-sensitive adhesive whose base polymer is a butyl acrylate-acrylic acid copolymer) is applied to the release-treated surface of the release liner A2. Then, coating was performed so that the thickness after drying was 80 μm to form an adhesive layer (sometimes referred to as “adhesive layer A1”). After bonding a polyester nonwoven fabric (sometimes referred to as “base material A1”) to the surface of the pressure-sensitive adhesive layer A1, an acrylic pressure-sensitive adhesive (base polymer) is applied to the surface of the base material A1 (polyester nonwoven fabric). Acrylic pressure-sensitive adhesive having a butyl acrylate-acrylic acid copolymer) is applied so that the thickness after drying is 80 μm, and a pressure-sensitive adhesive layer (sometimes referred to as “pressure-sensitive adhesive layer A2”). Was further cut into a width of 85 mm to prepare a double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet A”).

  Four strip-like release liners A1 (width: 20 mm) are placed on the surface (width: 85 mm) of the pressure-sensitive adhesive layer A2 of the double-sided pressure-sensitive adhesive sheet A in the width direction on the surfaces of the strip-like release liner A1 and the pressure-sensitive adhesive layer A2. Bonding was performed so that the surface of the pressure-sensitive adhesive layer was exposed with a width of 1 mm at the portion between the end portions and between the adjacent strip-shaped release liners A1. Next, using an polyamide fiber (fiber thickness: 3 denier, fiber length: 0.3 mm), electrostatic flocking is performed from the surface on the adhesive layer A2 side to which the strip-shaped release liner A1 is bonded, and the adhesive layer A double-sided pressure-sensitive adhesive sheet (“Line”) having a line-like fiber raised portion on the surface of one pressure-sensitive adhesive layer as shown in FIG. 9 is obtained by planting the polyamide-based fibers on the exposed surface of A2. In some cases, it may be referred to as a double-sided pressure-sensitive adhesive sheet A ”.

  FIG. 9 is a schematic cross-sectional view of the line-shaped fiber raised portion-forming double-sided pressure-sensitive adhesive sheet A according to Example 1 cut in the width direction. In FIG. 9, 16 is a double-sided pressure-sensitive adhesive sheet A with a line-shaped fiber raised portion, 16a is a strip-shaped release liner A1, 16b is a line-shaped fiber raised portion, and 16c is a pressure-sensitive adhesive with a line-shaped fiber raised portion formed on the surface. Layers A2 and 16d are base materials A1 and 16e, and adhesive layers A1 and 16f are release liners A2.

(Example 2)
A 1% by weight heptane solution of a polydimethylsiloxane silicone release agent (trade name “KS-778” (Shin-Etsu Chemical Co., Ltd.)) on one side of a polyethylene film (trade name “NSO” manufactured by Okura Kogyo Co., Ltd .; thickness 60 μm) After being coated, the film was dried at 120 ° C. for 2 minutes to produce a release liner (release paper; sometimes referred to as “release liner B1”). The coating amount of the agent was 0.05 g / m ² .

  The release liner B1 was cut into a width of 30 mm to produce a strip-shaped release liner (sometimes referred to as “strip-shaped release liner B1”).

  In addition, a 1% by weight heptane solution of a polydimethylsiloxane-based silicone release treatment agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) is coated on a kraft paper laminated with polyethylene to release a release liner (“ After that, an acrylic pressure-sensitive adhesive (an acrylic pressure-sensitive adhesive whose base polymer is a butyl acrylate-acrylic acid copolymer) is applied to the release-treated surface of the release liner B2. Then, coating was performed so that the thickness after drying was 80 μm to form an adhesive layer (sometimes referred to as “adhesive layer B1”). After bonding a polyester nonwoven fabric (sometimes referred to as “base material B1”) to the surface of this pressure-sensitive adhesive layer B1, an acrylic pressure-sensitive adhesive (base polymer) is applied to the surface of the base material B1 (polyester nonwoven fabric). Acrylic pressure-sensitive adhesive in which butyl acrylate-acrylic acid copolymer is coated) so that the thickness after drying is 80 μm, and pressure-sensitive adhesive layer (sometimes referred to as “pressure-sensitive adhesive layer B2”) Was further cut into a width of 125 mm to prepare a double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet B”).

  Four strip-shaped release liners B1 (width: 30 mm) are placed on the surface (width: 125 mm) of the pressure-sensitive adhesive layer B2 of the double-sided pressure-sensitive adhesive sheet B in the width direction on the surfaces of the strip-shaped release liner B1 and the pressure-sensitive adhesive layer B2. Bonding was performed so that the surface of the pressure-sensitive adhesive layer was exposed with a width of 1 mm at the portion between the ends and between the adjacent strip-shaped release liners B1. Next, using an polyamide fiber (fiber thickness 3 denier, fiber length 1 mm), electrostatic flocking is applied from the surface of the adhesive layer B2 side to which the strip-shaped release liner B1 is bonded, and the adhesive layer B2 A double-sided pressure-sensitive adhesive sheet having a line-like fiber raised portion on the surface of one pressure-sensitive adhesive layer ("line-like fiber raised portion-forming double-sided pressure-sensitive adhesive sheet B") by flocking the polyamide-based fibers on the exposed surface In some cases).

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

  The release liner C1 was cut into a width of 40 mm to produce a strip-shaped release liner (sometimes referred to as “strip-shaped release liner C”).

  On one side of a polyethylene film (trade name “SHO” manufactured by Okura Kogyo Co., Ltd .; thickness 50 μm), an acrylic pressure-sensitive adhesive (trade name “Leocoat 1020” manufactured by Toray Cortex Co., Ltd.) is applied so that the thickness after drying becomes 10 μm. To form a pressure-sensitive adhesive layer (sometimes referred to as “pressure-sensitive adhesive layer C”), further cut into a width of 165 mm, and double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet C”). Was made.

  Four strip-shaped release liners C (width: 40 mm) are provided on the surface of the pressure-sensitive adhesive layer C (width: 165 mm) of the double-sided pressure-sensitive adhesive sheet C, and the widthwise direction on the surfaces of the strip-shaped release liner C and the pressure-sensitive adhesive layer C is measured. Bonding was performed so that the surface of the pressure-sensitive adhesive layer was exposed with a width of 1 mm at the portion between the ends and between the adjacent strip-shaped release liners C. Next, using an polyamide fiber (fiber thickness: 3 denier, fiber length: 0.3 mm), electrostatic flocking is performed from the surface of the adhesive layer C side to which the strip-shaped release liner C is bonded, and the adhesive layer A double-sided pressure-sensitive adhesive sheet having a line-like fiber raised portion on the surface of one pressure-sensitive adhesive layer ("line-like fiber-raised portion-formed double-sided pressure-sensitive adhesive sheet" is obtained by flocking the polyamide-based fibers on the exposed surface of C. C ”).

(Comparative Example 1)
1% by weight heptane of a polydimethylsiloxane-based silicone release agent (trade name “KS-778” (manufactured by 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 coated, dried at 120 ° C. for 2 minutes, and further cut into a width of 85 mm to prepare a release liner (release paper; sometimes referred to as “release liner D1”). In this release liner D1, the coating amount of the silicone release treatment agent was 0.05 g / m ² .

  On a kraft paper laminated with polyethylene, a 1% by weight heptane solution of a polydimethylsiloxane silicone release agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) was applied to the release liner (“release liner”). D2 ”is prepared), and then an acrylic pressure-sensitive adhesive (an acrylic pressure-sensitive adhesive whose base polymer is a butyl acrylate-acrylic acid copolymer) is dried on the release-treated surface of the release liner D2. Coating was performed so that the subsequent thickness was 80 μm, thereby forming an adhesive layer (sometimes referred to as “adhesive layer D1”). After a polyester nonwoven fabric (sometimes referred to as “base material D1”) is bonded to the surface of the pressure-sensitive adhesive layer D1, an acrylic pressure-sensitive adhesive (base polymer) is applied to the surface of the base material D1 (polyester nonwoven fabric). Acrylic pressure-sensitive adhesive having a butyl acrylate-acrylic acid copolymer) is applied so that the thickness after drying is 80 μm, and a pressure-sensitive adhesive layer (sometimes referred to as “pressure-sensitive adhesive layer D2”). Was further cut into a width of 85 mm, and then a release liner D1 was bonded to the surface of the pressure-sensitive adhesive layer D2 to prepare a double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet D”).

  Therefore, the double-sided pressure-sensitive adhesive sheet D according to Comparative Example 1 is a double-sided pressure-sensitive adhesive sheet having the same configuration as the double-sided pressure-sensitive adhesive sheet A according to Example 1.

(Evaluation)
From the line-shaped fiber raising part formation double-sided adhesive sheet (line-shaped fiber raising part formation double-sided adhesive sheet AC) obtained by Examples 1-3, and the double-sided adhesive sheet D obtained by the comparative example 1, respectively, a strip The strip-shaped release liner A1 (Example 1), the strip-shaped release liner B1 (Example 2), the strip-shaped release liner C (Example 3), and the release liner D1 (Comparative Example 1) are peeled off, and the other is applied to the acrylic plate. From the release liner side, after applying a load of 25 g / 22.5 cm ² and temporarily adhering, it is moved 6 mm from the position where the double-sided pressure-sensitive adhesive sheet is pasted, and then it is strongly pressure-bonded. Depending on whether or not, the pasting position correction workability was evaluated.

  Moreover, after pasting, after leaving at room temperature (23 ° C.) for 24 hours, the other release liner was peeled off, and a polyester film (trade name “Lumirror # 38” manufactured by Toray Industries, Inc .; thickness 38 μm) was lined up, Using a Tensilon tensile tester, the adhesive strength to the acrylic plate was measured, and the adhesive strength of the pressure-sensitive adhesive layer having line-like fiber raised portions on the surface was evaluated based on the ratio to the adhesive strength of the double-sided pressure-sensitive adhesive sheet D of Comparative Example 1. did.

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

Example 4
A 1% by weight heptane of a polydimethylsiloxane-based silicone release agent (trade name “KS-774” (manufactured by 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 coating the solution, drying was performed at 120 ° C. for 2 minutes to prepare a release liner (release paper; may be referred to as “release liner E1”). The coating amount of the treatment agent was 0.05 g / m ² .

  The release liner E1 was cut into a width of 20 mm to produce a strip-shaped release liner (sometimes referred to as “strip-shaped release liner E1”).

  On one side of a polyethylene film (trade name “SHO” manufactured by Okura Kogyo Co., Ltd .; thickness 50 μm; sometimes referred to as “base E1”), a polydimethylsiloxane-based silicone release treatment agent (trade name “KS-778” ( 1 wt% heptane solution (manufactured by Shin-Etsu Chemical Co., Ltd.) is applied, dried at 120 ° C. for 2 minutes to form a release treatment layer (sometimes referred to as “release treatment layer E1”), On the other side of the polyethylene film, an acrylic pressure-sensitive adhesive (trade name “Leocoat 1020” manufactured by Toray Cortex Co., Ltd.) was applied so that the thickness after drying was 10 μm, and the pressure-sensitive adhesive layer (“pressure-sensitive adhesive layer” In some cases, it was cut into a width of 85 mm, and a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer only on one side (sometimes referred to as “pressure-sensitive adhesive sheet E1”) was produced.

  Thereafter, four strip-shaped release liners E1 (width: 20 mm) are placed on the surface (width: 85 mm) of the pressure-sensitive adhesive layer E1 of the pressure-sensitive adhesive sheet E1, and the width direction on the surfaces of the strip-shaped release liner E1 and the pressure-sensitive adhesive layer E1. The adhesive layer E1 of the pressure-sensitive adhesive sheet E1 and the strip-shaped release so that the surface of the pressure-sensitive adhesive layer is exposed with a width of 1 mm in the portion between the end of the adhesive and the portion between the adjacent strip-shaped release liners E1. The liner E1 was bonded so that the surface on which the release treatment layer was not formed (the release treatment layer non-formation surface) was in contact. Next, using an polyamide fiber (fiber thickness: 3 denier, fiber length: 0.3 mm), electrostatic flocking is performed from the surface of the adhesive layer E1 side to which the strip-shaped release liner E1 is bonded, and the adhesive layer By flocking the polyamide-based fibers on the exposed surface of E1, the pressure-sensitive adhesive sheet ("line-shaped fiber napping" having a line-shaped fiber napping portion on the surface of the pressure-sensitive adhesive layer as shown in FIG. A part transfer forming sheet E ”in some cases.

  FIG. 10 is a schematic cross-sectional view when the line-shaped fiber raised portion transfer forming sheet E according to Example 4 is cut in the width direction. In FIG. 10, 17 is a line-shaped fiber raised portion transfer forming sheet E, 17a is a strip-shaped release liner E1, 17b is a line-shaped fiber raised portion, and 17c is a pressure-sensitive adhesive having a line-shaped fiber raised portion formed on the surface. Layers E1 and 17d indicate the base material E1 and 16e, and the release treatment layer E1.

  On the other hand, on a kraft paper laminated with polyethylene, a 1% by weight heptane solution of a polydimethylsiloxane silicone release agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) was applied to a release liner (“ After that, an acrylic pressure-sensitive adhesive (an acrylic pressure-sensitive adhesive whose base polymer is a butyl acrylate-acrylic acid copolymer) is applied to the release-treated surface of the release liner E2. Then, coating was performed so that the thickness after drying was 80 μm to form an adhesive layer (sometimes referred to as “adhesive layer E2”). After bonding a polyester-based nonwoven fabric (sometimes referred to as “base material E2”) to the surface of the pressure-sensitive adhesive layer E2, an acrylic pressure-sensitive adhesive (base polymer) is applied to the surface of the base material E2 (polyester-based nonwoven fabric). (Acrylic pressure-sensitive adhesive in which butyl acrylate-acrylic acid copolymer) is applied so that the thickness after drying is 80 μm, and a pressure-sensitive adhesive layer (may be referred to as “pressure-sensitive adhesive layer E3”) Was further cut into a width of 85 mm to prepare a double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet E”).

  In addition, the adhesive force of the adhesive layer E3 is larger than the adhesive layer E1. Specifically, the adhesive strength of the adhesive layer E3 (23 ° C. × 65% RH, 180 ° peeling, tensile speed 300 mm / min) is 8 N / 20 mm, and the adhesive strength of the adhesive layer E1 (23 ° C. × 65% RH, 180 ° peeling, tensile speed 300 mm / min) was 3 N / 20 mm. In the case of the pressure-sensitive adhesive layer E3, the pressure-sensitive adhesive strength is 23 on the surface of the pressure-sensitive adhesive layer E3 of the double-sided pressure-sensitive adhesive sheet E, and on the surface of the pressure-sensitive adhesive layer E1 of the pressure-sensitive adhesive sheet E1 in the case of the pressure-sensitive adhesive layer E1. Double-sided PSA sheet with 1kg reciprocating with 2kg roller in an atmosphere of ℃, left at 23 ℃ for 30 minutes, then peeled off at 180 ℃ and tensile speed of 300mm / min in an atmosphere of 23 ℃ x 65% RH E or the adhesive sheet E1 was peeled off and measured.

  Thereafter, the line-shaped fiber raised portion transfer forming sheet E is applied to the surface of the pressure-sensitive adhesive layer E3 of the double-sided pressure-sensitive adhesive sheet E, and the pressure-sensitive adhesive layer E3 of the double-sided pressure-sensitive adhesive sheet E and the line-shaped fiber raised portion transfer forming sheet E They were bonded together and pressure-bonded so that the surface on which the electro-flocking process was performed (the surface on which the line-like fiber raised portion was formed) was in contact. Next, after peeling off the release liner E2 from the double-sided pressure-sensitive adhesive sheet E, the release liner E2 is wound with the surface on the release-treated layer E1 side of the line-like fiber raised portion transfer forming sheet E inside, and is wound on the surface of one pressure-sensitive adhesive layer. A double-sided pressure-sensitive adhesive sheet formed by transfer and having a line-like fiber raised portion (sometimes referred to as “line-like fiber raised portion-formed double-sided pressure-sensitive adhesive sheet E”) was produced in the form of a wound body.

  Accordingly, in the line-like fiber raised portion-formed double-sided pressure-sensitive adhesive sheet E, the line-like fiber raised portion transfer forming sheet E is used as a release liner after the line-like fiber raised portion is transferred to the adhesive layer E3. Can do. That is, in the double-sided pressure-sensitive adhesive sheet E with line-shaped fiber raised portions, the surface of the pressure-sensitive adhesive layer E3 on which the line-shaped fiber raised portions are formed by transfer is transferred from the line-shaped fiber raised portion transfer forming sheet E by transfer. It can be protected by a release liner in which the fiber raised portion is removed (sometimes referred to as “release liner E3”).

(Example 5)
A 1% by weight heptane solution of a polydimethylsiloxane silicone release agent (trade name “KS-774” (manufactured by Shin-Etsu Chemical Co., Ltd.)) on one side of a polyethylene film (trade name “NSO” manufactured by Okura Kogyo Co., Ltd .; thickness 60 μm) After being coated, the film was dried at 120 ° C. for 2 minutes to produce a release liner (release paper; sometimes referred to as “release liner F1”). The coating amount of the agent was 0.05 g / m ² .

  The release liner F1 was cut into a width of 30 mm to produce a strip-shaped release liner (sometimes referred to as “strip-shaped release liner F1”).

  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 F1”), an acrylic pressure-sensitive adhesive (trade name “Leocoat 1020” manufactured by Toraycoatx Co., Ltd.) The thickness after drying is applied to be 10 μm to form an adhesive layer (sometimes referred to as “adhesive layer F1”), and further cut to a width of 125 mm to provide an adhesive only on one side. A pressure-sensitive adhesive sheet having a layer (sometimes referred to as “pressure-sensitive adhesive sheet F1”) was produced.

  Thereafter, four strip-shaped release liners F1 (width: 30 mm) on the surface (width: 125 mm) of the pressure-sensitive adhesive layer F1 of the pressure-sensitive adhesive sheet F1, and the width direction on the surfaces of the strip-shaped release liner F1 and the pressure-sensitive adhesive layer F1. The adhesive layer F1 of the pressure-sensitive adhesive sheet F1 and the strip-shaped release so that the surface of the pressure-sensitive adhesive layer is exposed with a width of 1 mm in the portion between the end of the adhesive and the portion between the adjacent strip-shaped release liners F1. The liner F1 was bonded so that the surface on which the release treatment layer F1 was not formed (the release treatment layer non-formation surface) was in contact. Next, electrostatic flocking is performed from the surface of the adhesive layer F1 side to which the strip-shaped release liner F1 is bonded using a polyamide fiber (fiber thickness: 3 denier, fiber length: 1 mm). A pressure-sensitive adhesive sheet having a line-shaped fiber raised portion on the surface of the pressure-sensitive adhesive layer by implanting the polyamide-based fibers on the exposed surface (when referred to as “line-shaped fiber raised portion transfer forming sheet F”) There is).

  On the other hand, on a kraft paper laminated with polyethylene, a 1% by weight heptane solution of a polydimethylsiloxane silicone release agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) was applied to a release liner (“ After preparing a release liner F2 ”, a rubber adhesive (natural rubber and styrene-butadiene rubber is natural rubber / styrene-butadiene rubber = 50 / A rubber-based pressure-sensitive adhesive compounded at a ratio of 50 (weight ratio) is applied so that the thickness after drying becomes 80 μm, and a pressure-sensitive adhesive layer (sometimes referred to as “pressure-sensitive adhesive layer F2”) Formed. A polyester-based non-woven fabric (sometimes referred to as “base material F2”) is bonded to the surface of the pressure-sensitive adhesive layer F2, and then a rubber-based pressure-sensitive adhesive (natural rubber) is applied to the surface of the base material F2 (polyester-based non-woven fabric). And a styrene-butadiene rubber, a rubber-based pressure-sensitive adhesive in which a ratio of natural rubber / styrene-butadiene rubber = 50/50 (weight ratio) is applied so that the thickness after drying is 80 μm. Then, a pressure-sensitive adhesive layer (sometimes referred to as “pressure-sensitive adhesive layer F3”) is formed, and further cut into a width of 125 mm to produce a double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet F”). did.

  In addition, the adhesive force of the adhesive layer F3 is larger than the adhesive layer F1. Specifically, the adhesive strength of the adhesive layer F3 (23 ° C. × 65% RH, 180 ° peeling, tensile speed 300 mm / min) is 11 N / 20 mm, and the adhesive strength of the adhesive layer F1 (23 ° C. × 65% RH, 180 ° peeling, tensile speed 300 mm / min) was 3 N / 20 mm. In the case of the pressure-sensitive adhesive layer F3, the pressure-sensitive adhesive force is 23 on the surface of the pressure-sensitive adhesive layer F3 of the double-sided pressure-sensitive adhesive sheet F, and in the case of the pressure-sensitive adhesive layer F1, the surface of the pressure-sensitive adhesive layer F1 of the pressure-sensitive adhesive sheet F1 on the stainless steel plate. Double-sided PSA sheet with 1kg reciprocating with 2kg roller in an atmosphere of ℃, left at 23 ℃ for 30 minutes, then peeled off at 180 ℃ and tensile speed of 300mm / min in an atmosphere of 23 ℃ x 65% RH F or the pressure sensitive adhesive sheet F1 was peeled off and measured.

  Thereafter, the line-shaped fiber raised portion transfer forming sheet F is applied to the surface of the pressure-sensitive adhesive layer F3 of the double-sided pressure-sensitive adhesive sheet F. The pressure-sensitive adhesive layer F3 of the double-sided pressure-sensitive adhesive sheet F and the line-shaped fiber raised portion transfer forming sheet F They were bonded together and pressure-bonded so that the surface on which the electro-flocking process was performed (the surface on which the line-like fiber raised portion was formed) was in contact. Next, after peeling off the release liner F2 from the double-sided pressure-sensitive adhesive sheet F, the release liner F2 is wound with the surface on the release treatment layer F1 side of the line-like fiber raised portion transfer forming sheet F inside, and is wound on the surface of one pressure-sensitive adhesive layer. A double-sided pressure-sensitive adhesive sheet having a line-like fiber raised portion (sometimes referred to as “line-like fiber raised portion-formed double-sided pressure-sensitive adhesive sheet F”) formed by transfer was produced in the form of a wound body.

  Therefore, in the line-like fiber raised portion forming double-sided pressure-sensitive adhesive sheet F, the line-like fiber raised portion transfer forming sheet F is used as a release liner after the line-like fiber raised portion is transferred to the adhesive layer F3. Can do. That is, in the double-sided pressure-sensitive adhesive sheet F with line-shaped fiber raised portions, the surface of the pressure-sensitive adhesive layer F3 on which the line-shaped fiber raised portions are formed by transfer is transferred from the line-shaped fiber raised portion transfer forming sheet F by line transfer. It can be protected by a release liner in which the fiber raised portion is removed (sometimes referred to as “release liner F3”).

(Example 6)
1% by weight heptane of a polydimethylsiloxane-based silicone release treatment (trade name “KS-774” (manufactured by Shin-Etsu Chemical Co., Ltd.) on both sides of a polyester film (trade name “Lumirror # 38” manufactured by Toray Industries, Inc .; thickness 38 μm) After the solution was applied, it was dried at 120 ° C. for 2 minutes to produce a release liner (release paper; sometimes referred to as “release liner G1”). The coating amount of the treatment agent was 0.05 g / m ² .

  The release liner G1 was cut into a width of 40 mm to produce a strip-shaped release liner (sometimes referred to as “strip-shaped release liner G1”).

  On one side of a polyethylene film (trade name “SHO” manufactured by Okura Kogyo Co., Ltd .; thickness 50 μm; sometimes referred to as “base G1”), an acrylic pressure-sensitive adhesive (trade name “Leocoat 1020” manufactured by Toraycoatx Co., Ltd.) The thickness after drying is applied to be 10 μm to form an adhesive layer (sometimes referred to as “adhesive layer G1”), and further cut into a width of 165 mm to provide an adhesive only on one side. A pressure-sensitive adhesive sheet having a layer (sometimes referred to as “pressure-sensitive adhesive sheet G1”) was produced.

  Thereafter, four strip-shaped release liners G1 (width: 40 mm) are placed on the surface (width: 165 mm) of the pressure-sensitive adhesive layer G1 of the pressure-sensitive adhesive sheet G1, and the width direction on the surfaces of the strip-shaped release liner G1 and the pressure-sensitive adhesive layer G1. The adhesive layer G1 of the pressure-sensitive adhesive sheet G1 and the strip-shaped release so that the surface of the pressure-sensitive adhesive layer is exposed with a width of 1 mm in the portion between the end of the adhesive and the portion between the adjacent strip-shaped release liners G1. The liner G1 was bonded so that the surface on which the release treatment layer G1 was not formed (the release treatment layer non-formation surface) was in contact. Next, using an polyamide fiber (fiber thickness: 3 denier, fiber length: 0.3 mm), electrostatic flocking is performed from the surface on the adhesive layer G1 side to which the strip-shaped release liner G1 is bonded, and the adhesive layer A pressure-sensitive adhesive sheet having a line-shaped fiber raised portion on the surface of the pressure-sensitive adhesive layer (referred to as “line-shaped fiber raised portion transfer forming sheet G”) by flocking the polyamide-based fiber onto the exposed surface of G1. In some cases).

  On the other hand, on a kraft paper laminated with polyethylene, a 1% by weight heptane solution of a polydimethylsiloxane silicone release agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) was applied to a release liner (“ After that, an acrylic pressure-sensitive adhesive (an acrylic pressure-sensitive adhesive whose base polymer is a butyl acrylate-acrylic acid copolymer) is applied to the release-treated surface of the release liner G2. Then, coating was performed so that the thickness after drying was 80 μm to form an adhesive layer (sometimes referred to as “adhesive layer G2”). After bonding a polyester-based nonwoven fabric (sometimes referred to as “base material G2”) to the surface of the pressure-sensitive adhesive layer G2, an acrylic pressure-sensitive adhesive (base polymer) is applied to the surface of the base material G2 (polyester-based nonwoven fabric). Acrylic pressure-sensitive adhesive in which butyl acrylate-acrylic acid copolymer is applied) so that the thickness after drying is 80 μm, and pressure-sensitive adhesive layer (sometimes referred to as “pressure-sensitive adhesive layer G3”) Was further cut into a width of 165 mm to prepare a double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet G”).

  Note that the adhesive strength of the adhesive layer G3 is greater than that of the adhesive layer G1. Specifically, the adhesive strength of the adhesive layer G3 (23 ° C. × 65% RH, 180 ° peeling, tensile speed 300 mm / min) is 8 N / 20 mm, and the adhesive strength of the adhesive layer G1 (23 ° C. × 65% RH, 180 ° peeling, tensile speed 300 mm / min) was 3 N / 20 mm. In the case of the pressure-sensitive adhesive layer G3, the pressure-sensitive adhesive force is 23 on the surface of the pressure-sensitive adhesive layer G3 of the double-sided pressure-sensitive adhesive sheet G, and on the surface of the pressure-sensitive adhesive layer G1 of the pressure-sensitive adhesive sheet G1 on the stainless steel plate. Double-sided PSA sheet with 1kg reciprocating with 2kg roller in an atmosphere of ℃, left at 23 ℃ for 30 minutes, then peeled off at 180 ℃ and tensile speed of 300mm / min in an atmosphere of 23 ℃ x 65% RH G or adhesive sheet G1 was peeled off and measured.

  Thereafter, the line-shaped fiber raised portion transfer forming sheet G is applied to the surface of the pressure-sensitive adhesive layer G3 of the double-sided pressure-sensitive adhesive sheet G. The pressure-sensitive adhesive layer G3 of the double-sided pressure-sensitive adhesive sheet G and the line-shaped fiber raised portion transfer forming sheet G They were bonded together and pressure-bonded so that the surface on which the electro-flocking process was performed (the surface on which the line-like fiber raised portion was formed) was in contact. Next, after peeling the release liner G2 from the double-sided pressure-sensitive adhesive sheet G, the release liner G2 is wound with the surface on the side of the release treatment layer G1 of the line-like fiber raised portion transfer forming sheet G wound on the surface of one pressure-sensitive adhesive layer. A double-sided pressure-sensitive adhesive sheet formed by transfer and having a line-like fiber raised portion (sometimes referred to as “line-like fiber raised portion-formed double-sided pressure-sensitive adhesive sheet G”) was produced in the form of a wound body.

  Therefore, in the line-like fiber raised portion forming double-sided pressure-sensitive adhesive sheet G, the line-like fiber raised portion transfer forming sheet G should be used as a release liner after the line-like fiber raised portion is transferred to the adhesive layer G3. Can do. That is, in the line-like fiber raised portion double-sided pressure-sensitive adhesive sheet G, the surface of the pressure-sensitive adhesive layer G3 on which the line-like fiber raised portion is formed by transfer is transferred from the line-like fiber raised portion transfer forming sheet G by transfer. It can be protected by a release liner in which the fiber raised portion is removed (sometimes referred to as “release liner G3”).

(Comparative Example 2)
A 1% by weight heptane of a polydimethylsiloxane-based silicone release agent (trade name “KS-774” (manufactured by 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 coated, dried at 120 ° C. for 2 minutes, and further cut to a width of 85 mm to prepare a release liner (release paper; sometimes referred to as “release liner H1”). In this release liner H1, the coating amount of the silicone release treatment agent was 0.05 g / m ² .

  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 H1”), a polydimethylsiloxane-based silicone release treatment agent (trade name “KS-778” ( 1 wt% heptane solution (manufactured by Shin-Etsu Chemical Co., Ltd.) was applied, dried at 120 ° C. for 2 minutes to form a release treatment layer (sometimes referred to as “release treatment layer H1”), On the other side of the polyethylene film, an acrylic pressure-sensitive adhesive (trade name “Leocoat 1020” manufactured by Toray Cortex Co., Ltd.) was applied so that the thickness after drying was 10 μm, and the pressure-sensitive adhesive layer (“pressure-sensitive adhesive layer” H1 ”may be formed, and further cut into a width of 85 mm to produce a pressure-sensitive adhesive sheet (sometimes referred to as“ pressure-sensitive adhesive sheet E1 ”) having a pressure-sensitive adhesive layer only on one side.

  Thereafter, the release liner H1 (width: 85 mm) is applied to the surface (width: 85 mm) of the pressure-sensitive adhesive layer H1 of the pressure-sensitive adhesive sheet H1, and the pressure-sensitive adhesive layer H1 of the pressure-sensitive adhesive sheet H1 and the release treatment layer H1 of the strip-shaped release liner H1. The release liner (sometimes referred to as “release liner H2”) was produced by bonding so that the surface on which the surface was not formed (release treatment layer non-formation surface) was in contact.

  On a kraft paper laminated with polyethylene, a 1% by weight heptane solution of a polydimethylsiloxane silicone release agent (trade name “TPR6600” manufactured by GE Toshiba Silicone Co., Ltd.) was applied to the release liner (“release liner”). H3 ”is prepared), and then an acrylic pressure-sensitive adhesive (an acrylic pressure-sensitive adhesive whose base polymer is a butyl acrylate-acrylic acid copolymer) is dried on the release-treated surface of the release liner H3. Coating was performed so that the subsequent thickness was 80 μm, thereby forming an adhesive layer (sometimes referred to as “adhesive layer H1”). After bonding a polyester nonwoven fabric (sometimes referred to as “base material H1”) to the surface of this pressure-sensitive adhesive layer H1, an acrylic pressure-sensitive adhesive (base polymer) is applied to the surface of the base material H1 (polyester nonwoven fabric). Acrylic pressure-sensitive adhesive having a butyl acrylate-acrylic acid copolymer) is applied so that the thickness after drying is 80 μm, and a pressure-sensitive adhesive layer (sometimes referred to as “pressure-sensitive adhesive layer H2”). After further cutting to a width of 85 mm, the release liner H2 was bonded to the surface of the pressure-sensitive adhesive layer H2, and then the release liner H3 was peeled from the double-sided pressure-sensitive adhesive sheet H, and then the release liner H2 was peeled off A double-sided pressure-sensitive adhesive sheet (sometimes referred to as “double-sided pressure-sensitive adhesive sheet H”) was produced by winding the surface of the treatment layer H1 side inward.

  Therefore, the double-sided pressure-sensitive adhesive sheet H according to Comparative Example 2 is a double-sided pressure-sensitive adhesive sheet having the same configuration as the double-sided pressure-sensitive adhesive sheet E according to Example 4.

(Evaluation)
The line-shaped fiber raising part formation double-sided adhesive sheet (line-like fiber raising part formation double-sided adhesive sheet EG) obtained by Examples 4-6 and the double-sided adhesive sheet H obtained by the comparative example 2 were each wound. After returning, each exposed adhesive surface (adhesive layer E2 in Example 4, adhesive layer F2 in Example 5, adhesive layer G2 in Example 6, and adhesive layer H1 in Comparative Example 2) is wound around The release liner that was peeled off during rotation (release liner E2 in Example 4, release liner F2 in Example 5, release liner G2 in Example 6, release liner H3 in Comparative Example 2), and the other adhesive The release liner on the surface side (release liner E3 in Example 4, release liner F3 in Example 5, release liner G3 in Example 6, release liner H2 in Comparative Example 2) is peeled off ( In Example 4, the line-like fiber raised portion is transferred to the adhesive layer E3, in Example 5, the line-like fiber raised portion is transferred to the adhesive layer F3, and in Example 6, the line-like fiber raised portion is adhered. Transferred to the adhesive layer G3), and temporarily bonded to the acrylic plate with a load of 25 g / 22.5 cm ² from the other release liner side, and then moved 6 mm from the position where the double-sided PSA sheet was attached. After that, the bonding position correction workability was evaluated based on whether or not the movement at this time was easy.

  Moreover, after pasting, after leaving at room temperature (23 ° C.) for 24 hours, the other release liner was peeled off, and a polyester film (trade name “Lumirror # 38” manufactured by Toray Industries, Inc .; thickness 38 μm) was lined up, Using a Tensilon tensile tester, the adhesive strength to the acrylic plate was measured, and the adhesive strength of the pressure-sensitive adhesive layer having line-like fiber raised portions on the surface was evaluated by the ratio to the adhesive strength of the double-sided pressure-sensitive adhesive sheet H of Comparative Example 2. did.

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

  As is clear from Tables 1 and 2, the pressure-sensitive adhesive sheet according to the example (the pressure-sensitive adhesive sheet having a line-like fiber raised portion on the surface of the pressure-sensitive adhesive layer) is easy to correct the position after the initial application and is strongly applied. It was confirmed that the adhesive strength after application 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. It is a figure which shows the photograph regarding the shape of the line-like fiber raising part currently formed in the surface of an adhesive layer, and is the figure seen from the upper surface of the adhesive layer. It is a figure which shows the photograph regarding the shape of the line-like fiber raising part currently formed in the surface of an adhesive layer, and is a principal part enlarged view which shows the line-like fiber raising part which concerns on FIG. It is the schematic which shows the adhesive tape (winding body) of the form wound in the shape of a roll which has a line-like fiber raising part on the surface of one adhesive layer. FIG. 2 is a schematic perspective view partially showing an example of a state in which a line-like fiber convex structure portion is transferred and formed by laminating the fiber convex structure transfer forming sheet in the present invention on the surface of an adhesive tape or an adhesive layer of the sheet. is there. FIG. 6A is a schematic view partially showing an example of the fiber convex structure transfer forming sheet of 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 partially the example of the fiber convex structure transfer formation sheet of this invention, FIG.7 (a) is the schematic plan view seen from the upper surface of the fiber convex structure transfer formation sheet, FIG.7 (b) ) Is a schematic cross-sectional view taken along line XY in FIG. FIG. 8 is a schematic view partially showing an example of the fiber convex structure transfer forming sheet of the present invention, and FIG. 8A 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 a schematic sectional drawing at the time of cut | disconnecting the linear fiber raising part formation double-sided adhesive sheet A which concerns on Example 1 in the width direction. It is a schematic sectional drawing at the time of cut | disconnecting the linear fiber raising part transcription | transfer sheet | seat E which concerns on Example 4 in the width direction.

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 2 3 Adhesive tape or sheet base material
4a to 4d Adhesive tape or release liner for sheet 5a Line-shaped portion between release liner 4a and end 2a1 of surface 2a of adhesive layer 2
5b to 5d Line-shaped portion between adjacent release liners 4a to 4d 5e Line-shaped portion between the release liner 4d and the end 2a2 on the surface 2a of the pressure-sensitive adhesive layer 2
6a to 6e Line-shaped fiber raised portion 7 Fiber convex structure transfer forming sheet 7a Release liner in fiber convex structure transfer forming sheet 7b Adhesive layer 7b in fiber convex structure transfer forming sheet 7c Fiber convex structure transfer forming Substrate 7d for sheet 7 7d Line-shaped space between adjacent fiber convex structure transfer-forming sheet release liner 7a 8 Line-shaped fiber raised portion for transfer formation on adhesive layer 9 Adhesive tape or sheet 9a Adhesive Adhesive layer in tape or sheet 9 9a1 Surface of adhesive tape or sheet adhesive layer 9a 9b Substrate in adhesive tape or sheet 9 Fiber convex structure transfer forming sheet [Fiber convex structure transfer forming sheet (a) ]
10a Release liner in fiber convex structure transfer forming sheet 10b Adhesive layer in fiber convex structure transfer forming sheet 10c Substrate in fiber convex structure transfer forming sheet 10d Adjacent fiber convex structure transfer forming sheet Line-shaped space portion between release liners 10a for use 11 In a line-shaped fiber raised portion for transfer formation to the pressure-sensitive adhesive layer 12 Fiber convex structure transfer forming sheet [Fiber convex structure transfer forming sheet (b)]
12a Release liner 12 in the fiber convex structure transfer forming sheet 12b Adhesive layer in the fiber convex structure transfer forming sheet 12 12c Base material in the fiber convex structure transfer forming sheet 12 12d Release for the fiber convex structure transfer forming sheet Line-shaped hollow portion 13 in liner 12a 13 Line-shaped fiber raised portion for transfer formation to pressure-sensitive adhesive layer 14 Fiber convex structure transfer forming sheet [fiber convex structure transfer forming sheet (c)]
14a Substrate having a line-shaped uneven structure
14a1 Line-shaped convex portions of the substrate 14a for the convex-concave portion-containing fiber convex structure transfer forming sheet
14a2 Line-shaped concave portion 14b of the convex-concave portion-containing fiber convex structure transfer forming sheet base 14a Peeling treatment layer formed on the line-shaped convex portion 14a1 14c Transfer forming formed on the bottom surface of the line-shaped concave portion 14a2 Fiber convex structure holding pressure-sensitive adhesive layer 15 Line-shaped fiber raised portion for transfer formation to the pressure-sensitive adhesive layer

Claims (19)

A pressure-sensitive adhesive tape or sheet having a pressure-sensitive adhesive layer formed on at least one surface of a support, wherein the surface of the pressure-sensitive adhesive layer on at least one surface of the support has a plurality of line-shaped fiber convex structures. A pressure-sensitive adhesive tape or sheet. 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 pressure-sensitive adhesive tape or sheet according to claim 1, wherein a plurality of line-like fiber convex structures are formed in parallel to each other. The pressure-sensitive adhesive tape or sheet according to any one of claims 1 to 3, wherein a plurality of line-like fiber convex structures are formed with the longitudinal direction of the pressure-sensitive adhesive tape or sheet as the line direction. The pressure-sensitive adhesive tape or sheet according to claim 4, wherein an interval between adjacent line-shaped fiber convex structures is 1 to 100 mm. The pressure-sensitive adhesive tape or sheet according to any one of claims 1 to 5, wherein the width of each line-like fiber convex structure portion is 10 µm to 10 mm. It is a double-sided pressure-sensitive adhesive tape or sheet, and a plurality of line-like fiber convex structures are formed on the surface of the pressure-sensitive adhesive layer on at least one surface of the support. Adhesive tape or sheet. With the fiber convex structure transfer sheet that can transfer and form a line-shaped fiber convex structure on the surface of the pressure-sensitive adhesive layer, a plurality of line-shaped fiber convex structures are formed on the surface of the pressure-sensitive adhesive layer. The pressure-sensitive adhesive tape or sheet according to any one of claims 1 to 7, which is transferred and formed. The fiber convex structure transfer forming sheet has at least one surface functioning as a release surface for the pressure-sensitive adhesive layer on which the line-shaped fiber convex structure portion is transferred and formed on the release surface side. The pressure-sensitive adhesive tape or sheet according to claim 8, comprising a plurality of line-shaped transfer convex fiber convex structures for transferring and forming line-shaped fiber convex structures on the surface of the pressure-sensitive adhesive layer. A method for producing the pressure-sensitive adhesive tape or sheet according to any one of claims 1 to 9, wherein a linear fiber convex structure is formed by any one of the following methods (A) to (C): A method for producing a pressure-sensitive adhesive tape or sheet.
(A) In a state where a plurality of release substrates are overlapped on the surface of the pressure-sensitive adhesive layer with a plurality of line intervals, between adjacent release substrates or between adjacent release substrates and between the release substrate and the pressure-sensitive adhesive The surface of the pressure-sensitive adhesive layer that is exposed in a line shape between the ends of the surface of the layer is subjected to flocking to form a line-shaped fiber convex structure portion. (B) A line-shaped cavity portion is formed. In a state where the release substrate having the surface overlapped with the surface of the pressure-sensitive adhesive layer, the surface of the pressure-sensitive adhesive layer exposed in a line shape in the line-shaped cavity of the release substrate is subjected to flocking processing, whereby Forming the fiber convex structure part (C) The fiber convex structure transfer forming sheet capable of transferring and forming the line-shaped fiber convex structure part on the surface of the pressure-sensitive adhesive layer is superimposed on the surface of the pressure-sensitive adhesive layer. In addition, to transfer the line-shaped fiber convex structure to the surface of the adhesive layer Ri to form a line-shaped fiber convex structure section On the surface of the pressure-sensitive adhesive layer, a fiber convex structure transfer forming sheet capable of transferring and forming a line-shaped fiber convex structure portion is transferred and formed on at least one surface of the line-shaped fiber convex structure portion. A line-shaped transfer-forming fiber projection for transferring and forming a line-shaped fiber-convex structure on the surface of the pressure-sensitive adhesive layer on the surface of the pressure-sensitive adhesive layer. The manufacturing method of the adhesive tape or sheet | seat of Claim 10 which has multiple shape structure parts. A fiber convex structure transfer forming sheet capable of transferring and forming a line-shaped fiber convex structure portion on the surface of the pressure-sensitive adhesive layer, wherein at least one surface has a line-shaped fiber convex structure portion It has a function as a release surface for the pressure-sensitive adhesive layer to be transferred, and is used for line-shaped transfer formation to transfer and form a line-shaped fiber convex structure on the surface of the pressure-sensitive adhesive layer on the release surface side. A fiber convex structure transfer forming sheet, comprising a plurality of fiber convex structure portions. The fiber convex structure transfer forming sheet according to claim 12, wherein a concave portion is formed in a line shape on the peeling surface side, and a linear convex fiber forming structure portion for transfer formation is provided in the concave portion. At the bottom of the line-shaped concave portion on the peeling surface side, the transfer-forming fiber convex structure portion has lower adhesiveness than the pressure-sensitive adhesive layer for transferring and forming the fiber convex structure portion, and holds the transfer-forming fiber convex structure portion. The sheet | seat for fiber convex structure transfer formation of Claim 13 which has a holding | maintenance adhesion layer. A base material, a transfer-forming fiber convex structure holding adhesive layer provided on the base material, and a plurality of the transfer-forming fiber convex structure holding adhesive layer provided with a line interval The line-shaped transfer convex fiber convex structure is formed between the adjacent release bases, or between the adjacent release bases and between the release base and the transfer form fiber convex. The fiber convex structure transfer formation according to claim 14, which is formed in a line-shaped concave portion between the end of the surface of the structure holding adhesive layer and on the surface of the fiber convex structure holding adhesive layer for transfer formation. Sheet. Formed by a base material having a line-shaped uneven structure, a release treatment layer formed on the convex portion of the base material, and a fiber convex structure holding adhesive layer for transfer formation formed on the bottom surface of the concave portion of the base material The line-shaped transfer convex fiber convex structure portion is formed in the line-shaped concave portion of the base material and on the surface of the transfer-forming fiber convex structure portion holding adhesive layer. Fiber convex structure transfer forming sheet. At the bottom of the line-shaped concave portion on the peeling surface side, there is a peeling treatment layer that holds the line-shaped transfer forming fiber convex structure, and the line-shaped transfer convex fiber convex structure is The fiber convex structure transfer forming sheet according to claim 13, which is formed directly on the surface of the release treatment layer in the concave portion. The fiber convex structure transfer forming sheet according to any one of claims 12 to 17, wherein the fiber convex structure transfer forming sheet has a form wound in a roll shape with the release surface inside. . The pressure-sensitive adhesive layer for forming the line-shaped fiber convex structure is a pressure-sensitive adhesive layer made of at least one pressure-sensitive adhesive selected from a rubber-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, and a hot-melt pressure-sensitive adhesive. The sheet | seat for fiber convex structure transfer formation of any one of 12-18.

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