JP2015108121A - Pressure adhesive type double-sided adhesive sheet capable of positioning - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure adhesive type adhesive sheet capable of positioning a cosmetic material and having the adhesion sufficient to fix the cosmetic material after the positioning, and a pressure adhesive type double-sided adhesive sheet-attached cosmetic material.SOLUTION: In a pressure adhesive type double-sided adhesive sheet 1, a ratio of an area of the portion of an adhesive layer 3 that is covered with a non-adhesive masking member 5 to an area of the whole surface 3a of the adhesive layer 3 is in the range of 5-11%, and (a minimum height from the surface of the adhesive layer to the non-adhesive masking member/foam sheet thickness) is 0.14 or more and 0.5 or less.

Description

  The present invention relates to a pressure-bonding type double-sided pressure-sensitive adhesive sheet and a pressure-bonding type for fixing a decorative material such as a flooring material, a baseboard, a wall material, and a ceiling material to a predetermined position of a base material such as a wall and a floor. It is related with a double-sided adhesive sheet sticking cosmetic material.

  Conventionally, in construction relations, adhesives are widely used for fixing building materials. That is, adhesives have been widely used for fixing building materials such as floor materials, skirting boards, wall materials, and ceiling materials to a frame at a construction site. However, when fixing building materials using an adhesive, after preparing the adhesive, apply the adhesive, paste the building materials together, and wait for the adhesive to harden before the next process can be started. Requires a long time.

  Therefore, in recent years, a method for fixing a building material such as a baseboard to a frame of a building using a double-sided adhesive tape instead of an adhesive has become widespread. In the fixing method using the double-sided pressure-sensitive adhesive tape, by sticking one pressure-sensitive adhesive layer surface of the double-sided pressure-sensitive adhesive tape to the building material, the one pressure-sensitive adhesive layer surface of the double-sided pressure-sensitive adhesive tape is fixed to the building material. The building material is fixed by sticking the pressure-sensitive adhesive layer surface to the sticking position, that is, the surface of the housing. Alternatively, a method of pasting one adhesive layer surface of the double-sided pressure-sensitive adhesive tape in advance to the attachment position of the housing for fixing the building material, and bonding the building material using the other adhesive layer surface of the double-sided adhesive tape is also performed. .

  However, in any of the above methods, there is a problem that it is extremely difficult to correct the pasting position after the building material is once pasted to the housing of the building using the double-sided adhesive tape. In other words, it is very difficult to remove the building material again or shift the building material to the correct position without damaging the frame and the building material after being pasted.

  Therefore, the following two methods have been proposed as methods that can be easily re-peeled after pasting.

  The first method is a method in which the release paper of the double-sided pressure-sensitive adhesive tape is subjected to a back splitting process, and the release paper for temporary fastening and the release paper for permanent fastening are used for pasting. In this method, the temporary release release paper is first peeled off and the building material is temporarily fixed at the pasting position. Adhesive strength of the pressure-sensitive adhesive layer exposed by peeling the release paper for temporary fixing is not sufficient, so if the sticking position deviates from the target position, re-peel or shift the sticking position Can do. Next, after the position adjustment, the release paper for main fastening is peeled off and the building material is finally bonded. However, in the method of performing the back split processing on the release paper, the operation is complicated as described above, and it is difficult to adjust the release paper to have sufficient removability. In addition, depending on the shape and dimensions of the building materials, the release paper had to be split in various forms.

  The second method is a method using an adhesive for a double-sided pressure-sensitive adhesive tape that has low initial adhesive strength, and therefore has removability, and adhesion progresses due to changes over time. And it was difficult to give sufficient removability.

  As a solution to the above problem, Patent Document 1 discloses an adhesive sheet in which a convex portion made of a solid non-adhesive substance is formed on at least one surface of a pressure-sensitive adhesive layer. In this adhesive sheet, due to the presence of the convex portion due to the solid non-adhesive substance, fine adjustment of the adhesive sheet can be easily performed at the time of sticking, and the non-adhesive substance is attached to the surface of the adhesive by the pressure contact force at the time of adhesion. It is said that sufficient adhesive force can be expressed by sinking below. However, in this document, a non-adhesive substance is placed at a uniform height by sticking a rectangular glass cloth as a non-adhesive substance to a sheet-like adhesive or by dispersing glass beads in a sheet-like adhesive. It is only arranged on the adhesive.

JP-A-7-310057

  When fixing decorative materials such as floor materials, baseboards, wall materials, and ceiling materials to a predetermined position of a base material such as a wall and a floor using a pressure-bonding double-sided pressure-sensitive adhesive sheet, the positional deviation occurs. In such a case, the normal pressure-bonding double-sided sheet is not peeled off once attached, or even if it is peeled off, the base material, the decorative material, or the double-sided pressure-sensitive adhesive sheet itself is damaged.

  An object of the present invention is to provide a pressure-sensitive adhesive sheet and a pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet that are capable of positioning a decorative material and have sufficient adhesive strength to fix the decorative material after being strongly pressed after positioning. It is to provide a cosmetic material.

The present invention has been made to achieve the above object, and the following are provided.
[1] The foam sheet, the pressure-sensitive adhesive layer disposed on both surfaces of the foam sheet, and at least one surface of the pressure-sensitive adhesive layer so that the surface of the pressure-sensitive adhesive layer protrudes partially from the surface In a pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet provided with a non-adhesive masking member arranged to cover,
The ratio of the area of the part covered with the non-adhesive masking member in the adhesive layer to the area of the entire surface of the adhesive layer is in the range of 5 to 11%, and (from the surface of the adhesive layer to the non-adhesive The pressure-adhesive double-sided pressure-sensitive adhesive sheet is characterized in that the minimum height to the adhesive masking member / the thickness of the foam sheet is 0.14 or more and 0.5 or less.
[2] The pressure bonding according to [1], wherein the non-adhesive masking member is composed of a synthetic resin filament tape extending in two directions or a synthetic resin filament tape extending in three directions. Mold double-sided adhesive sheet.
[3] [1] or [2] so that the pressure-adhesive double-sided pressure-sensitive adhesive sheet is affixed to the decorative material on the side opposite to the side where the non-adhesive masking member is present A pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet, wherein the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet is laminated on a decorative material.
[4] A step of producing an original sheet made by laminating a pressure-sensitive adhesive layer on both sides of a closed cell foam sheet made of a synthetic resin and a first release layer on one side of the pressure-sensitive adhesive layer, and the pressure-sensitive adhesive A step of stabilizing the gelation of the layer, a step of laminating the non-adhesive masking member and the second release layer in this order on the pressure-sensitive adhesive layer on which the first release layer is not laminated, and the first release layer. The method for producing a pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet according to [1] or [2], comprising a step of peeling and removing the mold layer.

  According to the present invention, when adjusting the application position of the adherend of the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet prior to pressurization, the non-adhesive masking member only abuts the adherend surface, Since contact with the attachment surface is suppressed or prevented, the position of the pressure-adhesive double-sided pressure-sensitive adhesive sheet with respect to the adherend can be freely adjusted, and after the position adjustment is completed, pressure adhesion to the adherend is performed. By pressurizing the mold double-sided pressure-sensitive adhesive sheet, it is possible to maintain good adhesive strength of the pressure-bonding double-sided pressure-sensitive adhesive sheet to the adherend.

  In addition, in a decorative material to which a pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet is attached, the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet is formed on one side of the decorative material. The position can be accurately adjusted, and after that, it can be easily and reliably fixed to the pressurizing position by applying pressure.

The fragmentary sectional view of the pressure adhesion type double-sided pressure-sensitive adhesive sheet of the present invention. The fragmentary sectional view of the deformation | transformation state of an adhesive sheet at the time of pressure-bonding the pressure-adhesion type double-sided adhesive sheet of this invention to a decorative material. Explanatory drawing for demonstrating the non-adhesion masking member which consists of a biaxial synthetic resin filament tape. Explanatory drawing for demonstrating the non-adhesion masking member which consists of a triaxial synthetic resin filament tape. BRIEF DESCRIPTION OF THE DRAWINGS Schematic of the manufacturing apparatus for demonstrating the manufacturing process of the pressure bonding type double-sided adhesive sheet of this invention. Schematic of a test jig for evaluating re-stickability.

  Hereinafter, the configuration and principle of the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet according to the present invention will be described with reference to the drawings.

  FIG. 1 is a partial cross-sectional view showing an example of a pressure-bonding double-sided pressure-sensitive adhesive sheet of the present invention. The pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet 1 includes a foam sheet 2, pressure-sensitive adhesive layers 3 and 4 formed on both surfaces of the foam sheet 2, and non-adhesive masking disposed on the surface of one pressure-sensitive adhesive layer 3. It has a structure in which the member 5 is laminated. The non-adhesive masking member 5 may also be provided on the surface of the other pressure-sensitive adhesive layer 4. A release layer (not shown) may be laminated on at least one surface of the pressure-sensitive adhesive layers 3 and 4 for surface protection before adhering to the adherend or the decorative material.

  The principle of the pressure-bonding double-sided pressure-sensitive adhesive sheet shown in FIG. 1 will be described.

  In the pressure-adhesive double-sided pressure-sensitive adhesive sheet 1, in the illustrated state, the non-adhesive masking member 5 is laminated on the surface 3 a of the pressure-sensitive adhesive layer 3 so as to protrude from the surface 3 a of the pressure-sensitive adhesive layer 3. The member 5 partially covers the surface 3 a of the pressure-sensitive adhesive layer 3 at a portion in contact with the pressure-sensitive adhesive layer 3. Therefore, in the state where the pressure-adhesive double-sided pressure-sensitive adhesive sheet 1 is brought into contact with the surface of the housing as the adherend 20 from the pressure-sensitive adhesive layer 3 side, the masking member 5 first adheres to the surface of the housing, and thus the pressure-sensitive adhesive layer. 3 does not contact the housing surface. When the pressure is applied, the foam sheet 2 is compressed and deformed, and the non-adhesive masking member 5 in contact with the surface of the housing sinks into the foam sheet 2. The non-adhesive masking member 5 protrudes from the surface 3a of the adhesive layer 3 again. Therefore, the position can be freely adjusted in a state where the pressure-adhesive double-sided pressure-sensitive adhesive sheet 1 is in contact with the adherend surface. In this embodiment, the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet 1 has the decorative material 22 bonded to the side opposite to the surface where the non-adhesive masking member 5 exists, that is, the surface on the pressure-sensitive adhesive layer 4 side. In addition, after the adhesive layer 4 of the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet 1 is attached to the surface of the casing, a cosmetic material may be attached to the adhesive layer 3 side.

  The decorative material 22 is not particularly limited. For example, in addition to building materials such as flooring materials, baseboards, wall materials, and ceiling materials, a plate that exhibits decorativeness in various applications such as vehicle materials. A shaped member can be used.

  As described above, since the non-adhesive masking member 5 is present, the pressure-adhesive double-sided pressure-sensitive adhesive sheet 1 can be freely adjusted in position while being in contact with the adherend surface. After the adjustment is completed, the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet 1 can be attached by pressing the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet 1 toward the adherend.

  More specifically, as shown in FIG. 2, the foam sheet 2 is compressed and deformed by pressurization, and the non-adhesive masking member 5 is moved to the same position as the surface 3 a of the adhesive layer 3. It will be. On the other hand, the pressure-sensitive adhesive layer 3 is pressed against the surface of the adherend 20 from the surface of the pressure-sensitive adhesive layer 3 that is in contact with the foam sheet 2 due to the compressive stress generated by the pressurization. Therefore, the part of the pressure-sensitive adhesive layer 3 other than the part where the non-adhesive masking member 5 is laminated is pressed against the surface of the adherend 20 by the compression stress and is firmly bonded.

  Therefore, the pressure-adhesive double-sided pressure-sensitive adhesive sheet 1 can easily adjust the position until the final determination of the sticking position, and after the position adjustment is completed, pressurize to make it correct and strong. Can be adhered to.

  Details of each component will be described.

  The foam sheet 2 is a closed cell foam sheet made of synthetic resin. The material constituting the foam sheet 2 may be any material as long as it fulfills the above-described action, and includes, for example, a polyolefin-based foam. The synthetic resin may be, for example, polyethylene alone, but ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl acrylate copolymer (EMA), ethylene-acrylic acid copolymer. It may be a mixture of a copolymer such as a polymer (EAA) and polyethylene.

  More specifically, Sekisui Chemical Co., Ltd., which is a polyethylene-based closed cell foam sheet, trade name: Softlon, Highsheet, which is a polyethylene closed-cell foam sheet, trade name: High Sheet, ethylene —Sekisui Chemical Co., Ltd., a closed cell foam sheet of vinyl acetate copolymer, trade name: Bollara.

  The thickness of the foam sheet 2 needs to be at least the thickness of the non-adhesive masking member 5 and is preferably 0.3 mm to 1 mm.

  About the adhesive layers 3 and 4, it can comprise using the appropriate adhesive conventionally used to comprise the adhesive layer of a double-sided adhesive tape. Examples of such pressure-sensitive adhesives include suitable pressure-sensitive adhesives such as acrylic acid ester-based, polyether-based, urethane-based, natural or synthetic rubber-based. Among these, acrylic acid esters are preferred from the viewpoint of adhesive strength. It is preferable to use a system adhesive.

  As for the pressure-sensitive adhesives constituting the pressure-sensitive adhesive layers 3 and 4, those having a gel fraction in a range of 10 to 99% by weight after stabilization after curing satisfy both the adhesive force and the cohesive force. It is preferable to obtain. When the non-adhesive masking member 5 is laminated in a state where the gelation of the adhesive layer 3 is not stable, the non-adhesive masking member 5 sinks inside the adhesive layer 3, and the position adjusting device of the present invention. Decreases.

  The pressure-sensitive adhesive constituting the pressure-sensitive adhesive layers 3 and 4 may be cross-linked using an appropriate cross-linking agent. Examples of such cross-linking agents include isocyanate cross-linking agents, epoxy cross-linking agents, aziridine cross-linking agents, A metal complex compound or the like can be used.

  The thickness of the pressure-sensitive adhesive layers 3 and 4 is not particularly limited, and varies depending on the application, non-adhesiveness, or the shape and thickness of the masking member 5, but is usually preferably about 20 to 100 μm.

  Moreover, as an acrylic adhesive of this invention, the adhesive force with respect to a stainless steel plate or a concrete adhesive force is about 5-60N / 25mm, and a glass transition temperature is -60 degreeC--40 degreeC, for example. .

  Although the material which comprises the non-adhesive masking member 5 is not specifically limited, For example, they are any of a woven fabric, a metal mesh, a shaping | molding net | network, and these combination. In the structure shown in FIG. 1, the non-adhesive masking member 5 has a shape that uniformly covers the surface 3 a of the pressure-sensitive adhesive layer 3 and partially covers the surface 3 a of the pressure-sensitive adhesive layer 3. The non-adhesive masking member 5 protrudes from the surface 3a of the pressure-sensitive adhesive layer 3, and may take an appropriate shape as long as the adhesive force of the pressure-sensitive adhesive layer 3 is suppressed by partial coating. That is, it may be a lattice shape, or may be a shape of a net or a porous sheet in which openings having a circular shape or other shapes are dispersedly formed.

For example, as shown in FIG. 3, the non-adhesive masking member 5 may be filament tapes 5a and 5b made of synthetic resin extending in two directions. In this case, the plurality of filament tapes 5a extending in the first direction (vertical direction in FIG. 3) and the plurality of filament tapes 5b extending in the second direction (horizontal direction in FIG. 3) substantially perpendicular to the first direction are rectangular. The openings 6 are partitioned and the filament tapes 5a and 5b constitute a net 7 that is a porous structure in which a plurality of openings 6 are dispersedly formed. P ₁ is a place where there is only one filament tape 5b, and is the lowest height from the adhesive layer 3 of the filament tape. That is, in this embodiment, the minimum height is the length from the upper surface of the adhesive layer to the upper end of the filament tape 5b. P ₂ is a portion where the filament 5 a overlaps the filament tape 5 b and is the highest height from the adhesive layer 3 in the filament tape. That is, in this embodiment, the maximum height is the length from the upper surface of the adhesive layer to the upper end of the filament tape 5a.

Alternatively, for example, as shown in FIG. 4, the non-adhesive masking member 5 may be filament tapes 5a, 5c, 5d made of synthetic resin extending in three directions. In this case, a plurality of filament tapes 5a extending in the first direction (vertical direction in FIG. 4), a plurality of filament tapes 5c extending obliquely at an angle α with respect to the filament tape 5a, and the filament tape 5c with respect to the filament tape 5a And a plurality of filament tapes 5d extending obliquely at an angle β (α = β in this embodiment) on the opposite side to the longitudinal axis of the filament tape 5a are rectangular between the filament tape 5c and the filament tape 5d. A triangular opening 8b is defined between the opening 8a (the rhombus when α = β) and the filament tape 5a, the filament tape 5c, and the filament tape 5d. The formed net 9 is a porous structure. The angles α and β may be larger than 0 ° and smaller than 90 °, usually 10 to 80 °, and more preferably 30 to 60 °. P ₃ is a portion where only one filament tape 5d is present, and is the lowest height from the adhesive layer of the filament tape. P ₄ is a place where the filament tape 5 c overlaps the filament tape 5 d, P ₅ is a place where the filament tape 5 a further overlaps the filament tape 5 c, and the highest point from the adhesive layer of the filament tape. It becomes height. Similar to the embodiment of FIG. 3, the height of the filament is obtained by measuring the length from the upper surface of the adhesive layer 3 to the upper end of the filament tape.

  However, the shape of the opening formed by the non-adhesive masking member 5, that is, the portion where the adhesive layer 3 is exposed to the adherend is not limited to a square or a polygon, but may be any other shape such as a circle. .

  The ratio of the openings 6, 8 a, 8 b to the area of the entire surface of the pressure-sensitive adhesive layer 3, 4, that is, the opening ratio is preferably in the range of 89 to 95%. When the opening ratio exceeds 95%, even if the non-adhesive masking member 5 is laminated, the surfaces of the adhesive layers 3 and 4 tend to adhere to the surface of the adherend 20 before pressurization, Position adjustment before pressurization becomes difficult. On the contrary, if the aperture ratio is less than 89, the position adjustment is easy, but even if the pressure is applied, it becomes difficult to sufficiently adhere the surfaces of the pressure-sensitive adhesive layers 3 and 4 to the adherend 20.

  In the present invention, the material constituting the non-adhesive masking member 5 is not particularly limited as long as it is non-adhesive, and natural fibers such as cotton, olefin resins, particularly polyethylene, polypropylene, polyester, polyethylene terephthalate, etc. Arbitrary materials, such as synthetic fiber comprised from these, synthetic resins, such as the same olefin resin, and a metal, can be used. Non-adhesive masking member 5 made of such material, knitted cotton or synthetic resin fiber, mesh or net made of polyethylene, polypropylene or polyethylene terephthalate, non-woven fabric made of polyester fiber, metal such as brass or stainless steel A porous structure such as a metal mesh can be formed.

  The non-adhesive masking member 5 is required to protrude from the surface of the pressure-sensitive adhesive layer at the time of position adjustment at the time of sticking, but at the time of pressure bonding, it is moved to the same surface as the pressure-sensitive adhesive layer surface, and is no longer It does not fulfill the position adjustment function.

  In addition, when a mesh made of various materials is used as the non-adhesive masking member 5, if the mesh is too fine, the pressure-sensitive adhesive may not sufficiently protrude and a sufficient adhesion area may not be ensured. Those are preferred.

  The pressure-sensitive adhesive layer 3 of the area of the pressure-sensitive adhesive layers 3 and 4 covered with the non-sticky masking member 5 (that is, the area of the non-sticky masking member 5 covering the pressure-sensitive adhesive layers 3 and 4) , 4 with respect to the area of the entire surface, that is, the coverage is in the range of 5 to 11%. When the coverage is less than 5%, even if the non-adhesive masking member 5 is laminated, the surfaces of the pressure-sensitive adhesive layers 3 and 4 tend to adhere to the surface of the adherend 20 before pressing, Position adjustment before pressurization becomes difficult. On the other hand, when the coverage exceeds 11%, the position adjustment is easy, but it becomes difficult to sufficiently adhere the surfaces of the pressure-sensitive adhesive layers 3 and 4 to the adherend 20 even when the pressure is applied.

The thickness of the lowest part of the porous structure composed of the non-adhesive masking member 5, that is, the adhesive layer under the non-adhesive masking member 5 at the lowest part of the porous structure (adhesive in FIG. 1) The minimum height from the surface of the agent layer 3) to the upper end (P _{3 in} FIG. 4) of the non-adhesive masking member 5 is not particularly limited, but is preferably 300 μm or less. In one embodiment, the minimum height is 250 μm or more and 300 or less. When this minimum height is larger than 300 micrometers, adhesion of the adherend surface to the adhesive layer surface becomes difficult.

In the configuration of the present invention, the ratio of the minimum height from the surface of the adhesive layer to the non-adhesive masking member to the thickness of the foam sheet (minimum height from the surface of the adhesive layer to the non-adhesive masking member / The foam sheet thickness) is 0.14 or more and 0.5 or less. Preferably, the lower limit of the ratio is 0.146 or more. Preferably, the upper limit of the ratio is 0.4 or less, more preferably 0.3 or less. If the ratio is less than 0.14, it is difficult to adjust the position, and if the ratio exceeds 0.5, the adhesive strength is lowered. When the ratio is in the range of 0.14 or more and 0.5 or less, the position can be adjusted and high adhesive strength can be maintained.
Moreover, in the structure of this invention, the thickness of the non-adhesive masking member 5 with respect to the thickness of the adhesive layer 3 is very large, and is 2-30 times normally, Preferably it is 4-10 times. For this reason, the position adjustment function is effectively realized.

  The present invention further includes a pressure-sensitive adhesive laminated cosmetic material, wherein the pressure-adhesive double-sided pressure-sensitive adhesive sheet is laminated so that a non-adhesive masking member is exposed on one side of the cosmetic material. In this case, the application position can be accurately adjusted in a state where the decorative material is in contact with the application position, and can be easily and reliably fixed to the application position by applying pressure thereafter. .

  As shown in FIG. 5, the pressure-adhesive double-sided pressure-sensitive adhesive sheet 1 of the present invention has a pressure-sensitive adhesive layer on both sides of a closed cell foam sheet made of synthetic resin and a first release layer on one of the pressure-sensitive adhesive layers. On the pressure-sensitive adhesive layer on which the first release layer 11 of the raw fabric sheet 10 is not laminated, the step of preparing the raw fabric sheet 10 formed by laminating 11 and the step of stabilizing the gelation of the pressure-sensitive adhesive layer The non-adhesive masking member 5 and the second release layer 12 are laminated in this order, and the first release layer 11 is peeled and removed.

  By doing so, the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet can be provided in a state wound on a take-up roll, and even in that case, the performance of the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet 1 is impaired. Nor.

Hereinafter, the present invention will be clarified by describing non-limiting examples and comparative examples of the present invention.
Example 1
First, as a release paper, a release product (product name: SLB-73D, manufactured by Sumika Kogyo Co., Ltd.) prepared by laminating polyethylene on both sides of high-quality paper is prepared, and an adhesive is provided on one side of the release paper. 1 part by weight of an isocyanate-based curing agent, manufactured by the same company, and product name: AL with respect to 100 parts by weight of an acrylic pressure-sensitive adhesive (product name: AT-D45), so that the thickness of the layer is 60 μm. The blended material was applied and dried at 110 ° C. for 3 minutes.
Two release papers having the pressure-sensitive adhesive layer thus obtained were prepared, and a closed-cell polyethylene foam sheet (manufactured by Sekisui Chemical Co., Ltd., trade name: Bora La XL-EE1001, thickness 1.0 mm, appearance) The pressure-sensitive adhesive was transferred to both sides having a density of 100 kg / m ³ ) to prepare a double-sided pressure-sensitive adhesive sheet.
Thereafter, one of the release papers was peeled off, and a polyethylene net having a triaxial cross shape of FIG. 4 (monofilament (MF) diameter 280 μm, warp pitch 15 mm, slant yarn pitch 25 mm, opening ratio 92) as a non-adhesive masking member. 0.5%).
Further, the release paper was laminated thereon in the same manner as above to obtain the pressure-bonding double-sided pressure-sensitive adhesive sheet of Example 1.

Example 2
Pressure adhesive type double-sided as in Example 1 except that a polyethylene net (monofilament diameter 280 μm, warp pitch 20 mm, diagonal thread pitch 25 mm, open area ratio 95%) was used as the non-adhesive masking member. An adhesive sheet was prepared.

Example 3
Pressure adhesive type double-sided as in Example 1 except that a polyethylene net (monofilament diameter 280 μm, warp pitch 10 mm, diagonal thread pitch 25 mm, opening ratio 90%) was used as the non-adhesive masking member. An adhesive sheet was prepared.

Example 4
Pressure adhesive type double-sided as in Example 1 except that a polyethylene net (monofilament diameter 330 μm, warp pitch 10 mm, diagonal thread pitch 25 mm, opening ratio 90%) was used as the non-adhesive masking member. An adhesive sheet was prepared.
Example 5
As the foam sheet, a closed-cell polyethylene foam sheet (manufactured by Sekisui Chemical Co., Ltd., trade name: Bollara XLIM (thickness 0.3 mm)) and a non-adhesive masking member made of polyethylene net (warp) Example 1 except that flat yarn thickness 44 μm, width 0.8 mm, warp pitch 10 mm, and flat yarn thickness 44 μm, width 0.8 mm, diagonal yarn pitch 25 mm, opening ratio 89% are used for the slanted yarn. In the same manner as above, a pressure-bonding double-sided PSA sheet was produced.
Example 6
As the foam sheet, a closed-cell polyethylene foam sheet (manufactured by Sekisui Chemical Co., Ltd., trade name: Bollara XLIM (thickness 0.3 mm)) and a non-adhesive masking member made of polyethylene net (warp) Example 1 except that flat yarn thickness 66 μm, width 0.8 mm, warp pitch 10 mm, and flat yarn thickness 66 μm, width 0.8 mm, diagonal yarn pitch 25 mm, opening ratio 89%) were used for the slanted yarn. In the same manner as above, a pressure-bonding double-sided PSA sheet was produced.

Comparative Example 1
As the non-adhesive masking member, a polyethylene net (monofilament diameter 280 μm, warp pitch 10 mm for warp, flat yarn (FY) thickness 66 μm, width 0.8 mm, slant thread pitch 25 mm, opening ratio 84% for diagonal threads) was used. Except for this, a pressure-bonding double-sided PSA sheet was prepared in the same manner as in Example 1.

Comparative Example 2
Pressure adhesive type double-sided as in Example 1 except that a polyethylene net (monofilament diameter 330 μm, warp pitch 8 mm, diagonal thread pitch 25 mm, open area 87%) was used as the non-adhesive masking member. An adhesive sheet was prepared.
Comparative Example 3
As the foam sheet, a closed-cell polyethylene foam sheet (manufactured by Sekisui Chemical Co., Ltd., trade name: Bollara XLIM (thickness 0.3 mm)) and a non-adhesive masking member made of polyethylene net (warp) Example 1 except that flat yarn thickness 33 μm, width 0.8 mm, warp pitch 10 mm, and flat yarn thickness 33 μm, width 0.8 mm, slant yarn pitch 25 mm, opening ratio 89%) were used for the slanted yarn. In the same manner as above, a pressure-bonding double-sided PSA sheet was produced.
Comparative Example 4
A closed cell polyethylene foam sheet (manufactured by Sekisui Chemical Co., Ltd., trade name: Bollara XLIM (thickness 0.3 mm)) was used as the foam sheet, and a polyethylene net (monofilament as a non-adhesive masking member). A pressure-bonding double-sided pressure-sensitive adhesive sheet was prepared in the same manner as in Example 1 except that a diameter of 330 μm, a warp pitch of 10 mm, an oblique yarn pitch of 25 mm, and an opening ratio of 90% was used.

Evaluation of Examples 1 to 6 and Comparative Examples 1 to 4 (1) Evaluation of Position Adjustment Function First, a smooth float glass plate (JIS R 3202) thickness 6 mm × 300 mm × 300 mm was regarded as a decorative plate. Next, the warp yarns of the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheets of Examples 1 to 6 and Comparative Examples 1 to 4 were taken in the longitudinal direction and cut into a width of 25 mm and a length of 300 mm to obtain a tape shape.
As a building interior base material, a JIS A6901 [Shaging Gypsum Board (GB-S)] “Tiger Waterproof Board” manufactured by Yoshino Gypsum Co., Ltd. having a thickness of 12.5 mm × 400 mm × 400 mm was prepared.
As an evaluation method of the position adjustment function,
[1] Draw a 300mm x 300mm square draft on the above-mentioned squeezed gypsum board placed on a horizontal plane, and pressurize five pressure-adhesive double-sided pressure-sensitive adhesive sheets taped to the width of 25mm within the same 300mm x 300mm at equal intervals The adhesive surfaces without the non-adhesive masking member were arranged and bonded to a shizing gypsum board.
[2] The remaining release paper of the pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet bonded in [1] was peeled off to expose the pressure-sensitive adhesive surface on which the non-adhesive masking member was disposed.
[3] The float glass plate was gently placed on the adhesive surface exposed in [2].
[4] As a judgment of evaluation, the float glass of [3] was judged to be acceptable (possible) if it moved lightly and horizontally by hand, and rejected (impossible) if it did not move.

(2) Evaluation of Adhesive Force Using the test jig 14 made of stainless steel having an area of 40 mm square shown in FIG. 6, pressure bonding of Examples 1 to 6 and Comparative Examples 1 to 4 on the bottom surface 14a of the jig The side where the masking member of the mold double-sided pressure-sensitive adhesive sheet is not laminated is pressure-bonded, and the side where the masking member is laminated is placed on ordinary gypsum board 15 (manufactured by Yoshino Gypsum Co., Ltd., trade name: GB-R thickness 12.5 mm), After 500 g load and 5 kg load were loaded for 1 minute, the gypsum board 15 was fixed, the test jig 14 was peeled off at a speed of 5 mm / min in the direction perpendicular to the bonding surface, and the maximum test force was measured. The maximum test force per centimeter was defined as the adhesive strength (N / cm ² ).
(3) Existence of peeling after 23 ° C. × 1 month After the evaluation of the position adjustment in (1) above, after strongly pressing with a bare hand from the top of the float glass, in a room kept constant at 23 ° C. The resulting test specimen was stood vertically and the presence or absence of peeling of the float glass over time was observed.
The evaluation results are shown in Table 1 below.

In the table, MF is a monofilament, FY is an abbreviation for flat yarn, and the numbers mean diameter μm.

From Table 1, in Examples 1-6, position adjustment was possible and it did not peel off even with high adhesive strength.
In Comparative Examples 1 and 3, the position could not be adjusted. In Comparative Examples 2 and 4, although the position was adjusted, the adhesive strength was low, and it was peeled off by 28 hours after the strong pressure bonding.

DESCRIPTION OF SYMBOLS 1 ... Pressure adhesion type double-sided adhesive sheet, 2 ... Foam sheet, 3, 4 ... Adhesive layer, 5 ... Non-adhesive masking member, 7, 9 ... Porous structure As a net, 10 ... raw fabric sheet, 11 ... first release layer, 12 ... second release layer, 20 ... adherend, 22 ... cosmetic material.

Claims (4)

A foam sheet, an adhesive layer disposed on both surfaces of the foam sheet, and at least one surface of the adhesive layer so as to protrude from the surface and partially cover the surface of the adhesive layer In a pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet provided with a non-adhesive masking member arranged in
The ratio of the area of the part covered with the non-adhesive masking member in the adhesive layer to the area of the entire surface of the adhesive layer is in the range of 5 to 11%, and (from the surface of the adhesive layer to the non-adhesive The pressure-adhesive double-sided pressure-sensitive adhesive sheet is characterized in that the minimum height to the adhesive masking member / the thickness of the foam sheet is 0.14 or more and 0.5 or less.   The pressure-adhesive double-sided pressure-sensitive adhesive according to claim 1, wherein the non-adhesive masking member comprises a synthetic resin filament tape extending in two directions or a synthetic resin filament tape extending in three directions. Sheet.   The additive according to claim 1 or 2, wherein the pressure-adhesive double-sided pressure-sensitive adhesive sheet is affixed to the decorative material on the side opposite to the side where the non-adhesive masking member is present. A pressure-bonding double-sided pressure-sensitive adhesive sheet, wherein the pressure-bonding double-sided pressure-sensitive adhesive sheet is laminated on a decorative material.   A step of producing an original sheet made by laminating a pressure-sensitive adhesive layer on both sides of a closed cell foam sheet made of a synthetic resin and a first release layer on one side of the pressure-sensitive adhesive layer; and a gel of the pressure-sensitive adhesive layer A step of stabilizing the formation, a step of laminating the non-adhesive masking member and the second release layer in this order on the pressure-sensitive adhesive layer on which the first release layer is not laminated, and the first release layer. The method for producing a pressure-sensitive adhesive double-sided pressure-sensitive adhesive sheet according to claim 1 or 2, comprising a step of peeling and removing.