JP7000312B2 - Adhesive sheet for non-slip construction - Google Patents

Description

The present invention relates to an adhesive sheet for non-slip construction.

Conventionally, natural stones such as marble and tile materials made of various resins have been used as flooring materials for buildings. However, although such a flooring material is excellent in strength and weather resistance, it has a drawback that it becomes slippery when the surface is covered with water. For this reason, attempts have been made to impart anti-slip properties to the surface of the flooring material. As a method of imparting anti-slip property to the surface of the floor material, a method of applying a paint resin containing particles or the like to the surface of the floor material to form a non-slip layer, or a method of forming an uneven shape on the surface of the floor material. Etc. are known.

For example, Patent Document 1 discloses a floor cover containing particles as a non-slip element. Here, the particles of the non-slip element project to the surface to exert the non-slip function. Further, Patent Document 2 discloses a non-slip flooring material formed by partially applying an adhesive on a film and adhering particles having a predetermined particle size on the film and crimping the film. Further, the prior art of Patent Document 3 discloses a method of partially applying a non-slip treatment to the surface of a floor material. FIG. 3 of Patent Document 3 discloses a method in which a masking sheet is placed on the surface of a floor material and a resin material or the like is applied to the opening of the masking sheet to form an anti-slip layer. Here, a one-layer resin sheet is used as the masking sheet.

Japanese Unexamined Patent Publication No. 57-143508 Utility Model Registration No. 2545700 Japanese Unexamined Patent Publication No. 2-199081

When a floor cover that covers the entire floor as in Patent Documents 1 and 2 is used, there is a problem that the original design of the floor material such as texture and pattern is impaired. Further, when such a floor cover is used, the walkability and the passability of the trolley may be deteriorated, which has been a problem.

On the other hand, when a method of partially forming an anti-slip layer on the surface of the floor material is adopted, the design of the floor material is not impaired, but the construction often requires technology, and such a construction method. The current situation is that the adoption of is not progressing. Further, when the anti-slip layer is formed by using the conventional masking sheet, there is a problem that the shape of the anti-slip layer is not stable and sufficient anti-slip performance cannot be exhibited.

Therefore, in order to solve the problems of the prior art, the present inventors provide an adhesive sheet for forming an anti-slip layer capable of imparting excellent anti-slip properties without impairing the design of the floor material. We proceeded with the study for the purpose.

As a result of diligent studies to solve the above problems, the present inventors have formed an adhesive sheet for non-slip construction with a predetermined layer structure, and formed a plurality of through holes in the adhesive sheet for non-slip construction. It has been found that the anti-slip layer can be formed to exhibit excellent anti-slip properties.
Specifically, the present invention has the following configurations.

[1] A non-slip adhesive sheet having a surface layer and an adhesive layer, and having a plurality of through holes penetrating the surface layer and the adhesive layer.
[2] The non-slip adhesive sheet according to [1], wherein the number of through holes is 3 to 1000 per 100 cm ² of the non-slip adhesive sheet.
[3] The non-slip adhesive sheet according to [1] or [2], wherein the area per through hole is 0.01 to 20.0 cm ² .
[4] The non-slip adhesive sheet according to any one of [1] to [3], wherein the total area of the through holes is 2 to 60% of the total area of the non-slip adhesive sheet.
[5] The non-slip adhesive sheet according to any one of [1] to [4], which has a thickness of 0.05 to 1 mm.
[6] The non-slip adhesive sheet according to any one of [1] to [5], wherein the surface layer has a thickness of 100 to 500 μm.
[7] The non-slip adhesive sheet according to any one of [1] to [6], wherein the adhesive layer has removability.
[8] The non-slip adhesive sheet according to any one of [1] to [7], wherein the adhesive strength of the adhesive layer is 0.5 to 10.0 N / 50 mm.
[9] The non-slip adhesive sheet according to any one of [1] to [8], wherein the surface layer is a plastic film.
[10] The non-slip adhesive sheet according to any one of [1] to [9], wherein at least the exposed surface of the surface layer is embossed.
[11] Further on one surface side of the pressure-sensitive adhesive layer of the non-slip construction adhesive sheet according to any one of [1] to [10], and on the surface side opposite to the surface on which the surface layers are laminated. Adhesive sheet for non-slip construction with a release agent layer having a release agent layer.
[12] A pressure-sensitive adhesive sheet for forming through holes having a surface layer and a pressure-sensitive adhesive layer.
[13] The pressure-sensitive adhesive sheet for forming a through hole according to [12], wherein the pressure-sensitive adhesive force of the pressure-sensitive adhesive layer is 0.3 to 8.0 N / 25 mm.

According to the present invention, the anti-slip layer can be formed by a simple method by performing the non-slip construction using the non-slip construction adhesive sheet having a predetermined layer structure and structure.
Further, by using the non-slip adhesive sheet of the present invention, it is possible to form an anti-slip layer having a desired shape, so that it is possible to impart excellent anti-slip properties to an adherend such as a flooring material.

FIG. 1 is a plan view and a cross-sectional view illustrating the configuration of the non-slip adhesive sheet of the present invention. FIG. 2 is a diagram illustrating a state in which anti-slip construction is performed using the non-slip construction adhesive sheet of the present invention.

Hereinafter, the present invention will be described in detail. The description of the constituent elements described below may be based on typical embodiments and specific examples, but the present invention is not limited to such embodiments. In addition, the numerical range represented by using "-" in this specification means the range including the numerical values before and after "-" as the lower limit value and the upper limit value.

(Adhesive sheet for non-slip construction)
The present invention relates to a non-slip adhesive sheet having a surface layer and an adhesive layer. The non-slip adhesive sheet of the present invention has a plurality of through holes penetrating the surface layer and the adhesive layer. Here, the pressure-sensitive adhesive layer in the non-slip construction pressure-sensitive adhesive sheet of the present invention is a pressure-sensitive pressure-sensitive adhesive layer.
Since the non-slip adhesive sheet of the present invention has the above-mentioned structure, it is possible to easily form an anti-slip layer having a desired shape, and it is possible to impart excellent anti-slip properties to an adherend such as a flooring material.

Further, when the adhesive sheet for non-slip construction of the present invention is used, the handling property at the time of non-slip construction is improved. In the present specification, the good handling property at the time of non-slip construction is that (1) the adhesive sheet for non-slip construction can be easily attached to the surface of the object, and (2) after the filler is cured. The non-slip adhesive sheet for non-slip construction can be easily peeled off from the object, (3) when the non-slip adhesive sheet for non-slip construction is peeled off from the object, it can be peeled off without adhesive residue, and (4) the filler is placed in the through hole. It means that it is easy to fill reliably.

FIG. 1 is a diagram illustrating a configuration of an adhesive sheet for non-slip construction of the present invention. FIG. 1A is a plan view of the non-slip construction adhesive sheet 100 of the present invention, and the non-slip construction adhesive sheet 100 is provided with a plurality of through holes 30. The plan view of FIG. 1A is a plan view seen from the surface layer side, but the plan view also has the same configuration even if it is a plan view seen from the pressure-sensitive adhesive layer side. FIG. 1B is a cross-sectional view of the non-slip adhesive sheet 100 of the present invention. The cross-sectional view of FIG. 1 (b) is a cross-sectional view of FIG. 1 (a) when the non-slip construction adhesive sheet 100 is cut along the AA'line. The non-slip construction adhesive sheet 100 has a surface layer 10 and an adhesive layer 20, and the through holes 30 penetrate the surface layer and the adhesive layer.

When performing anti-slip construction, first, the adhesive sheet for non-slip construction of the present invention is attached to an adherend such as a flooring material. After that, the through hole of the non-slip adhesive sheet is filled with a filler that forms an anti-slip layer. Then, after the filler is cured, the anti-slip adhesive sheet of the present invention is peeled off from the adherend to partially form an anti-slip layer.

FIG. 2 shows how the non-slip adhesive sheet of the present invention is peeled off from the adherend after the filler is cured. In FIG. 2, in order to explain the construction method in an easy-to-understand manner, the through holes are shown in a large size and visualized. Further, in FIG. 2, the target to which the anti-slip construction is applied is the floor surface P, but the anti-slip construction can be applied to other than the floor surface. Further, in the present specification, the anti-slip layer means an anti-slip protrusion (anti-slip layer 50) as shown in FIG. 2 or an aggregate of anti-slip protrusions.

The thickness of the non-slip adhesive sheet of the present invention is preferably 0.05 to 1 mm, more preferably 0.1 to 0.8 mm, and further preferably 0.15 to 0.6 mm. It is preferably 0.2 to 0.5 mm, and particularly preferably 0.2 to 0.5 mm. By setting the thickness of the non-slip adhesive sheet within the above range, the thickness (height) of the anti-slip layer to be formed can be set within a preferable range. As a result, the anti-slip layer can promote drainage and can exhibit excellent anti-slip properties. Further, by setting the thickness of the non-slip adhesive sheet within the above range, it is possible to suppress stumbling during walking and to suppress deterioration of walking performance due to the anti-slip layer. Further, by setting the thickness of the non-slip adhesive sheet within the above range, it is possible to prevent the anti-slip layer from coming off from the adherend due to an impact applied during walking or the like.

The adhesive sheet for non-slip construction of the present invention can be applied to other than the floor material as described later, but it is preferably used for applying the non-slip construction to the floor material (floor surface). Therefore, the non-slip construction adhesive sheet of the present invention is preferably a floor non-slip construction adhesive sheet.

(Through hole)
The non-slip adhesive sheet of the present invention has a plurality of through holes. The number of through holes provided per 100 cm ² of the non-slip adhesive sheet is preferably 3 to 1000, more preferably 10 to 800, and even more preferably 30 to 500.
The area per through hole is preferably 0.01 to 20.0 cm ² , more preferably 0.02 to 10.0 cm ² , and 0.03 to 8.0 cm ² . Is even more preferable. By setting the area per through hole to the above lower limit value or more, an anti-slip layer having excellent anti-slip performance can be constructed. In addition, when filling the adhesive sheet for non-slip construction with the filler, it is possible to easily visually recognize that the filler has been filled in the through holes, and the construction can be performed efficiently, and construction mistakes due to poor filling can be detected. Can be prevented.

The total area of the through holes is preferably 2 to 60%, more preferably 3 to 60%, and even more preferably 5 to 50% of the total area of the non-slip adhesive sheet. By forming the through holes so as to meet the above conditions, it is possible to form an anti-slip layer having a desired size and shape. Further, the flexibility and strength of the non-slip adhesive sheet can be set in an appropriate range, and the handleability at the time of non-slip construction can be improved.

The area per through hole is preferably within the above range, and the shape of the through hole is not particularly limited as long as the through hole has such an area. The shape of the through hole may be, for example, a circle, an ellipse, a quadrangle, a triangle, a star, a heart, an animal or plant type, or the like. When the shape of the through hole is a quadrangle, the through hole may be formed in a striped shape as a rectangle at regular intervals. Above all, the shape of the through hole is preferably circular, and by forming the circular through hole so as to have a uniform pattern (dot shape), an anti-slip layer having excellent drainage property can be easily formed.

The shapes of the through holes do not have to be the same, and the through holes do not have to be formed so as to have a uniform pattern. For example, by using the shape of the through hole as a character shape and arranging various characters, the company name can be displayed or displayed as an advertisement. By filling such through holes with a filler to form an anti-slip layer, a company name or an advertisement logo can be displayed on an adherend such as a flooring material by using the anti-slip layer. In this case, the filler may contain a dye or the like to form a colored anti-slip layer. As described above, the through hole can have various shapes and properties, and the anti-slip layer can not only exhibit anti-slip properties but also exhibit an advertisement display function and design.

The through hole is preferably formed by subjecting a through hole forming pressure-sensitive adhesive sheet having a surface layer and an adhesive layer to a punching process, a laser process, or the like. The processing method can be appropriately selected according to the shape of the through hole and the like.

(Surface layer)
The non-slip adhesive sheet of the present invention has a surface layer. The material of the surface layer is not particularly limited. For example, a plastic film, a paper base material typified by synthetic paper, or the like can be used for the surface layer. Examples of the plastic film (resin base material) include PVC (polyvinyl chloride) film, PET (polyethylene / terephthalate) film, PE (polyethylene) film, PP (polypropylene) film, PO (polyethylene) film, PS (polystyrene) film, and the like. EVA (polyethylene / vinyl acetate copolymer) film, silicone film and the like can be mentioned. Further, as the synthetic paper, for example, Yupo Coat (registered trademark) manufactured by Yupo Corporation can be mentioned. The surface layer may have a single-layer structure, or may have a structure in which two or more of the above-mentioned base materials are laminated.

Above all, the surface layer is preferably a transparent base material, and it is more preferable to use a transparent resin base material. As the transparent resin base material, it is more preferable to use a PVC (polyvinyl chloride) film, PET (polyethylene / terephthalate) film, PE (polyethylene) film or PO (polyethylene) film, and a polyvinyl chloride film, a polyolefin film or polyethylene. It is more preferable to use a film, and it is further preferable to use a polyvinyl chloride film or a polyolefin film. Polyvinyl chloride film, polyolefin film, and polyethylene film have excellent flexibility as a base material, and when these films are used for the surface layer, the slipperiness of the spatula when the filler is leveled with a metal spatula is good. Therefore, it is preferably used.

When a polyvinyl chloride film is used as the surface layer, it is preferable that the film contains a plasticizer. Examples of such a plasticizer include a monomeric plasticizer and a polypeptide-based plasticizer, but in the present invention, it is preferable that the surface layer contains the polypeptide-based plasticizer. By using a polypeptide-based plasticizer, it is possible to suppress bleeding out to the pressure-sensitive adhesive layer laminated on the surface layer, and it is possible to suppress a decrease in the adhesive strength of the pressure-sensitive adhesive layer, even after a lapse of time. The adhesive strength of the pressure-sensitive adhesive layer can be within a desired range.

Polymeric plasticizers are preferably used because they have a complex structure that is superior in flexibility, weather resistance and stability to monomeric plasticizers. Polymeric plasticizers have long molecular chains and are complicated, so that the molecules are entangled with each other and have high stability. Therefore, bleed-out to the film surface is unlikely to occur, and the weather resistance is long.

As general plasticizers, for example, phthalate ester type (DEHP, DBP, BBP, DINP, DIDP, DNOP, DOTP), adipate type, phosphoric acid ester type, trimellitic acid, citric acid ester type. , Ester-based, polyester-based and other plasticizers can be mentioned.

It is preferable to emboss at least one surface of the surface layer. In particular, it is preferable to emboss the exposed surface of the surface layer (the surface opposite to the surface on which the adhesive layer is laminated). By performing such embossing, a fine uneven shape is formed on the surface layer, and the surface layer becomes translucent. The surface layer is preferably a transparent base material, but such an embossed translucent base material is also preferably used.

When the surface layer is embossed, the surface roughness (arithmetic mean roughness (Ra)) of the embossed surface is preferably 1 to 10, and more preferably 2 to 7. It is preferably 2 to 5, and more preferably 2 to 5. For the arithmetic mean roughness (Ra), only the reference length is extracted from the roughness curve in the direction of the average line, the X axis is taken in the direction of the average line of the extracted portion, and the Y axis is taken in the direction of the vertical magnification. , When the roughness curve is expressed by y = f (x), the value obtained by the following equation is expressed in micrometer (μm). In the following formula, l represents the reference length.

When the surface layer is a translucent base material, it is preferable to use a transparent filler. Examples of the transparent filler include silicone resin, acrylic resin, urethane resin, epoxy resin and the like. When the surface layer is translucent, the chromaticity and transparency are different from those of the transparent filler, so that it is easy to distinguish between the filler and the surface layer. Therefore, it becomes easy to confirm that the through hole of the non-slip adhesive sheet is filled with the filler, and it is possible to prevent the filler from leaking (filling omission). As described above, the chromaticity and transparency of the surface layer are preferably different from the chromaticity and transparency of the filler.
In addition, in order to make the chromaticity of the surface layer different from that of the filler, the surface layer may contain a dye. By coloring the surface layer, it is possible to make it easier to confirm the filling of the filler.

It is preferable that at least one surface of the surface layer is embossed. In this case, the total light transmittance of the surface layer is preferably 70 to 98%, more preferably 75 to 95%. The haze of the surface layer is preferably 10 to 98%, preferably 15 to 95%. In the specification of the present application, the total light transmittance and the haze are values measured by a method based on JIS K 7136.

Further, by embossing as described above, it is possible to improve the slipperiness of the spatula when filling the filler at the time of anti-slip construction. It is considered that this is because the frictional resistance when moving the spatula is reduced by the embossing formed on the surface exposed surface of the surface layer. By embossing in this way, workability during non-slip construction can be further improved.

The thickness of the surface layer is preferably 30 to 900 μm, more preferably larger than 50 μm and 900 μm or less, further preferably 100 to 500 μm, and even more preferably 150 to 400 μm. By setting the thickness of the surface layer within the above range, the thickness (height) of the anti-slip layer to be formed can be set within a preferable range. As a result, the anti-slip layer can exhibit excellent anti-slip properties and can suppress deterioration of walking performance caused by the anti-slip layer. Further, by setting the thickness of the surface layer within the above range, it is possible to prevent the anti-slip layer from being separated from the adherend due to an impact applied during walking or the like. Furthermore, by setting the thickness of the surface layer within the above range, the flexibility of the non-slip construction adhesive sheet can be maintained, and the handleability when the non-slip construction adhesive sheet is attached to the adherend during construction is improved. be able to.

The tensile strength of the surface layer is preferably 10 N / 10 mm or more, and more preferably 20 N / 10 mm or more. Further, the upper limit of the tensile strength of the surface layer is preferably 150 N / 10 mm or less. The tensile strength is a geometric mean value of the tensile strength in the length direction and the width direction of the surface layer.

(Adhesive layer)
The non-slip adhesive sheet of the present invention has an adhesive layer. In the present invention, the pressure-sensitive adhesive layer preferably has removability. Here, the removability means a property that the adhesive layer can be peeled off from the adherend without adhesive residue. Further, the removability can be adjusted by setting the adhesive strength of the non-slip adhesive sheet within a predetermined range or the like.

Examples of the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer include a solvent-type pressure-sensitive adhesive, an emulsion-type pressure-sensitive adhesive, and a hot-melt type pressure-sensitive adhesive. Of these, a solvent-based pressure-sensitive adhesive is preferably used from the viewpoint of ease of processing through holes.

The solvent type pressure-sensitive adhesive contains a pressure-sensitive adhesive (adhesive component) in an organic solvent. The adhesives that make up the solvent-based adhesives include acrylic adhesives, polyester adhesives, urethane adhesives, polyether adhesives, rubber adhesives, silicone adhesives, polyamide adhesives, and fluorine adhesives. Various known pressure-sensitive adhesives such as pressure-sensitive adhesives can be mentioned. Above all, in the present invention, it is preferable to use an acrylic pressure-sensitive adhesive or a urethane-based pressure-sensitive adhesive, and it is more preferable to use an acrylic-based pressure-sensitive adhesive.

The acrylic polymer, which is the base polymer of the acrylic pressure-sensitive adhesive, is obtained by polymerizing a (meth) acrylic monomer. As the acrylic polymer, a known polymer can be used. For example, a polymerizable monomer having a carboxyl group such as (meth) acrylic acid, itaconic acid, (anhydrous) maleic acid, (anhydrous) fumaric acid, and crotonic acid or an anhydride group thereof, an alkyl (meth) acrylate [methyl (meth)). Acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl (meth) acrylate, lauryl (meth) acrylate, etc.], 2-hydroxyethyl (meth) acrylate, etc. Di (meth) acrylates such as acrylates, diethylene glycol di (meth) acrylates and hexanediol di (meth) acrylates, tri (meth) acrylates such as pentaerythritol tri (meth) acrylates, (meth) acrylamides, N, N-dimethyl ( Examples thereof include a homopolymer of a monomer selected from a (meth) acrylic monomer such as (meth) acrylamide such as meta) acrylamide, a copolymer of a monomer selected from the above two or more kinds, and a polymorphic polymer such as a tarpolymer. Further, the acrylic polymer may be copolymerized with a monomer (other monomer) other than the above as long as the effect of the present invention is not significantly impaired.

Above all, in the present invention, it is preferable to use an acrylic solvent type pressure-sensitive adhesive. Acrylic solvent-based adhesives easily form through holes and are excellent in processing suitability. In addition, it is also excellent in stability after forming a through hole, and has an advantage that an anti-slip layer having a desired shape is easily formed.

As the acrylic polymer which is the base polymer of the acrylic solvent type pressure-sensitive adhesive, alkyl (meth) acrylate [methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl ( Meta) acrylate, lauryl (meth) acrylate, etc.], 2-hydroxyethyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-ethylhexyl (meth) acrylate and other homopolymers. And polymers.

The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer may be blended with a tackifier for the purpose of improving the tackiness, or may be blended with a softening agent in consideration of device compatibility.
Examples of the tackifier include rosin, ester gum, ester gum H, polyterpene resin, C5 petroleum resin, C9 petroleum resin, DCPD petroleum resin, styrene resin, alkylphenol resin, terpenephenol resin, and water thereof. Esters and the like can be mentioned. Of these, a polyterpene resin, a hydrogenated product of C5 petroleum resin, and a hydrogenated product of C9 petroleum resin are preferably used.
Examples of the softening agent include various plasticizers, polybutenes, liquid tackifier resins, polyisobutylene low polymers, polyvinylisobutyl ether low polymers, lanolin, depolymerized rubbers, process oils, naphthenic oils, paraffin oils, and additions. Examples include vulcanized oil.
In addition, if necessary, a thickener, a pH adjuster, an antifoaming agent, an antiseptic / antifungal agent, a pigment, an inorganic filler, a stabilizer, a wetting agent, a wetting agent and the like can be blended.

The adhesive strength of the pressure-sensitive adhesive layer in an environment of 23 ° C. is preferably 0.5 to 10.0 N / 50 mm, more preferably 0.7 to 9.0 N / 50 mm, and 0.9 to 8. It is more preferably 0N / 50mm, and particularly preferably 1.0 to 7.0N / 50mm. Here, the adhesive force is an adhesive force in a state of having a through hole, and is a value measured according to JIS Z 0237. By keeping the adhesive strength of the adhesive layer within the above range, the adhesion between the adhesive sheet for non-slip construction and the adherend can be improved, and the filler can be prevented from seeping out to an unintended place during non-slip construction. be able to. Further, by setting the adhesive strength of the adhesive layer within the above range, it is possible to improve the re-peelability when the adhesive sheet is peeled off from the adherend after the non-slip construction, and the adhesive sheet can be made without adhesive residue from the adherend. Can be peeled off.

The storage elastic modulus of the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer in the range of 0 to 60 ° C. and a frequency of 1 Hz is preferably 5 × 10 ³ to 5 × 10 ⁶ Pa, and is preferably 1 × 10 ⁴ to 5. It is more preferably × 10 ⁵ Pa. The storage elastic modulus is preferably within the above range as long as the frequency is within the range of 1 Hz and 0 to 60 ° C., regardless of the temperature conditions. When the storage elastic modulus is at least the above lower limit value, the removability can be improved while improving the adhesion to the adherend.

The thickness of the pressure-sensitive adhesive layer is preferably 5 to 100 μm, more preferably 8 to 80 μm, and even more preferably 10 to 50 μm. By setting the thickness of the pressure-sensitive adhesive layer within the above range, the thickness (height) of the anti-slip layer to be formed can be set within a preferable range. Further, by setting the thickness of the pressure-sensitive adhesive layer within the above range, the stability of the pressure-sensitive adhesive layer after forming the through holes can be enhanced, and the anti-slip layer having a desired shape can be formed. The thickness of the pressure-sensitive adhesive layer can be appropriately adjusted depending on the surface texture of the adherend. For example, when the surface of the adherend has an uneven shape, it is also preferable to increase the thickness of the pressure-sensitive adhesive layer in order to improve the unevenness-following property.

(Release layer)
The present invention is a non-slip construction with a release agent layer which is one surface side of the pressure-sensitive adhesive layer of the adhesive sheet for non-slip construction and further has a release agent layer on the surface side opposite to the surface on which the surface layers are laminated. It may be related to an adhesive sheet for use. By providing such a release agent layer, it is possible to prevent deposits such as dust and dirt from adhering to the surface of the pressure-sensitive adhesive layer. This makes it possible to prevent a decrease in the adhesion between the pressure-sensitive adhesive layer and the adherend.
As the release agent layer, for example, a well-known release sheet is used. As a well-known release sheet, for example, cast coated paper, art paper, coated paper, high-quality paper, kraft paper, glassin paper, polyethylene terephthalate (PET) film, polypropylene (PP) film and the like are required on the surface of a support. A release sheet or the like, which is formed by forming a sealing layer and then coated with a release agent such as a silicone type, may be mentioned.

The non-slip adhesive sheet of the present invention may be an adhesive sheet having a two-layer structure of a surface layer and an adhesive layer without having a release agent layer, and in this case, it is wound into a roll. It may be a tape. Further, a non-slip adhesive sheet with a release agent layer having a release agent layer may also be stored in a rolled state.

(Manufacturing method of adhesive sheet for non-slip construction)
The manufacturing process of the non-slip adhesive sheet of the present invention is a step of applying an adhesive coating liquid constituting the adhesive layer on the release agent layer and a step of applying the adhesive coating liquid constituting the adhesive layer on one surface side of the adhesive layer. It is preferable to include a step of laminating the surface layer on the surface side opposite to the surface on which the agent layer is laminated and a step of forming a through hole.
After the step of applying the pressure-sensitive adhesive coating liquid, it is preferable to include a step of curing the pressure-sensitive adhesive layer, and when the pressure-sensitive adhesive layer is formed from a solvent-type pressure-sensitive adhesive, it is preferable to include a drying step.

Further, as a pre-step of the step of laminating the surface layer, it is preferable to provide a step of embossing at least one surface of the surface layer.

The step of forming the through hole is a step of punching, laser processing, or the like on the adhesive sheet for forming the through hole with the release agent layer in which the release agent layer, the pressure-sensitive adhesive layer, and the surface layer are laminated in this order. The processing method can be appropriately selected according to the shape of the through hole and the like.

(Adhesive sheet for forming through holes)
The present invention also relates to an adhesive sheet for forming a through hole before forming the through hole. The pressure-sensitive adhesive sheet for forming through-holes has a surface layer and an adhesive layer, and is a pressure-sensitive adhesive sheet for forming through-holes as described above.

The adhesive strength of the adhesive sheet for forming a through hole in an environment of 23 ° C. is preferably 0.3 to 8.0 N / 25 mm, more preferably 0.5 to 7.7 N / 25 mm, and 0.8. It is more preferably to 7.5 N / 25 mm, and particularly preferably 1.0 to 7.0 N / 25 mm. Here, the adhesive force is the adhesive force in the state before forming the through hole, and is a value measured according to JIS Z 0237. By setting the adhesive strength of the pressure-sensitive adhesive layer within the above range, the formation of through holes can be facilitated, and the adhesiveness between the non-slip adhesive sheet for anti-slip construction and the adherend after forming the through holes can be improved.

(Non-slip construction method)
The non-slip adhesive sheet of the present invention is used in the non-slip construction method. Specifically, the non-slip construction adhesive sheet is attached to an adherend such as a floor surface, and then the through hole of the non-slip construction adhesive sheet is filled with a filler forming an anti-slip layer and cured. As a result, an anti-slip layer is formed. The non-slip adhesive sheet of the present invention is peeled off from the adherend after the anti-slip layer is formed.

FIG. 2 is a diagram illustrating a state in which anti-slip construction is performed using the non-slip construction adhesive sheet of the present invention. In FIG. 2, in order to explain the construction method in an easy-to-understand manner, the through holes are shown in a large size and visualized. Further, in FIG. 2, the target to which the anti-slip construction is applied is the floor surface P, but the anti-slip construction can be applied to other than the floor surface.
The non-slip construction method will be described in detail below.

The non-slip construction method is formed by (A) a step of attaching the non-slip construction adhesive sheet 100 of the present invention to the floor surface, and (B) a through hole 30 of the non-slip construction adhesive sheet 100 and the floor surface P. The space includes a step of filling the space with a filler and attaching at least a part of the filler 35 to the floor surface P, and (C) a step of removing the non-slip construction adhesive sheet 100 from the floor. The non-slip construction method preferably further includes (D) a step of curing the filler 35 adhering to the floor surface P.

(A) It is preferable to include a cleaning step of the floor surface P before the step. In the cleaning step, it is preferable to remove dust and dirt on the floor surface, and then use a chemical or the like to remove oil stains and other stains on the floor surface P. As the drug, for example, an organic solvent such as isopropanol or acetone can be used.

In the step (A), the non-slip construction adhesive sheet 100 of the present invention is attached to the floor surface P. When the non-slip adhesive sheet 100 is attached, it is preferable to press it with a compression roller in order to improve the adhesion between the non-slip adhesive sheet 100 and the floor surface P.

In the step (B), the filler 35 is filled in the through hole 30 of the non-slip adhesive sheet 100. At this time, an amount of the filler 35 larger than the total volume of the through hole 30 is used, and the excess filler that is not filled in the through hole 30 is removed by using a spatula or the like. Such a process is sometimes called a squeegee process. In the squeegee step, by leveling the surface of the surface layer with a spatula, the filler can be densely filled in the through hole 30, and the upper surface of the filler can be flattened.

As described above, the surface layer 10 of the non-slip adhesive sheet 100 of the present invention is preferably a transparent base material. Further, it is preferable that the surface exposed surface of the surface layer 10 is embossed. By performing such embossing, a fine uneven shape is formed on the surface layer, and light is diffusely reflected on the surface, so that the surface layer becomes translucent. Such a surface layer is preferable when the filler is transparent because it is easy to confirm that the filler has been filled. That is, it is preferable that the chromaticity and transparency of the surface layer are different from the chromaticity and transparency of the filler.

The step (B) preferably includes a step of curing the filler. As the filler, it is preferable to use one that cures at room temperature. Further, if necessary, it may be heat-cured using a dryer or the like. When the filler is cured at room temperature, it is preferable to move to the step (C) 1 to 24 hours after filling, but depending on the properties of the filler, the step (C) may be performed immediately. It is possible. By sufficiently curing after filling, it is possible to prevent the filler from spreading around the floor and losing its three-dimensional shape even after the non-slip adhesive sheet 100 is removed from the floor in the step (C).

In the step (C), the non-slip adhesive sheet 100 is peeled off from the floor surface P and disposed of. After the non-slip adhesive sheet 100 is peeled off from the floor surface P, the filler cured in the through hole 30 is projected onto the floor surface P, and such a cured filler is called the anti-slip layer 50. can. The anti-slip layer 50 is formed by the number of through holes 30 provided in the non-slip construction adhesive sheet 100. A large number of anti-slip layers 50 formed in this way promote drainage of the floor surface, and an anti-slip effect is exhibited.

When the step (D) is provided in the non-slip construction method, the step (D) is a step of further completely curing the filler cured in the step (B). In the step (D), for example, complete curing may be promoted by spraying a chemical or the like, or heat drying or the like may be further performed. Further, curing may be promoted by irradiating with ultraviolet rays.
Depending on the type of filler used, it is possible to completely cure the filler in the step (B) without providing such a complete curing step.

<Filler>
Examples of the filler include silicone resin, acrylic resin, urethane resin, epoxy resin and the like. Various coloring dyes, pigments, fluorescent agents and / or photochromic agents can be added to the filler as additives. Such additives can make the chromaticity and transparency of the filler different from the chromaticity and transparency of the surface layer. This makes it easier to confirm that the through hole of the non-slip adhesive sheet has been filled with the filler, and it is possible to prevent the filler from leaking (filling omission). Further, glass beads may be added to the filler in order to increase the strength of the anti-slip layer to be formed.

<Construction target>
Examples of objects to be subjected to anti-slip construction include floors, mobile phone housings, front and back surfaces of trays, cupboards, and the like. In particular, when anti-slip construction is applied to the floor, water adheres to the floor surface such as the floor of public facilities, the floor of pet salons, the floor of bathrooms, the floor of kitchens, the floor of factories, the floor of station premises and stairs. It can be preferably used for possible floors. Among them, it can be preferably used for ceramic tile flooring materials, natural stone flooring materials such as mikage stone and marble, and plastic flooring materials using hard materials such as vinyl chloride resin, and is particularly preferable for ceramic tile flooring materials. Can be used.

Further, the present invention may relate to a non-slip construction kit including a non-slip construction adhesive sheet and a filler for filling the through holes of the non-slip construction adhesive sheet.

Hereinafter, the features of the present invention will be described in more detail with reference to Examples and Comparative Examples. The materials, amounts used, ratios, treatment contents, treatment procedures, etc. shown in the following examples can be appropriately changed as long as they do not deviate from the gist of the present invention. Therefore, the scope of the present invention should not be construed as limiting by the specific examples shown below. In the following, Example 1 shall be read as Reference Example 1.

(Example 1)
An acrylic pressure-sensitive adhesive (BPS5303-2OJI manufactured by Toyo Chem Co., Ltd.) was mixed with 5 parts by mass of Coronate L manufactured by Tosoh Corporation to obtain a pressure-sensitive adhesive. The above pressure-sensitive adhesive was applied to a release paper (blue glassine 82 manufactured by Oji Tac Co., Ltd.) with a comma coater and heated at 100 ° C. for 2 minutes to form a pressure-sensitive adhesive layer (thickness: 20 μm).
A transparent vinyl chloride sheet (manufactured by Achilles Corporation, FCZA3502, thickness: 200 μm) was attached to the exposed surface of the pressure-sensitive adhesive layer. Then, using a turret punching machine, through holes having the shapes shown in Table 1 were formed. In this way, the non-slip construction adhesive sheet of Example 1 was obtained.

(Example 2)
Example 1 except that an embossed sheet (manufactured by Achilles Corporation, FCNA3502, thickness: 200 μm) was used as a transparent vinyl chloride sheet, and the shape of the through hole was changed to be as shown in Table 1. In the same manner as above, an adhesive sheet for non-slip construction was obtained.

(Examples 3 to 5)
Same as Example 2 except that the thickness of the transparent vinyl chloride sheet is as shown in Table 1, the thickness of the adhesive layer is as shown in Table 1, and the shape of the through holes is changed as shown in Table 1. And obtained an adhesive sheet for non-slip construction.

(Example 6)
Other than changing the transparent vinyl chloride sheet to a transparent polyolefin sheet (Okamoto Co., Ltd., PO-based convenience film, thickness: 300 μm) and changing the acrylic-based adhesive to a urethane-based adhesive (Toyo Chem Co., Ltd., SP-205). Obtained an adhesive sheet for non-slip construction in the same manner as in Example 5.

(Example 7)
Same as Example 6 except that the urethane adhesive was changed to an acrylic adhesive, the thickness of the adhesive layer was changed as shown in Table 1, and the shape of the through holes was changed as shown in Table 1. And obtained an adhesive sheet for non-slip construction.

(Comparative Example 1)
The transparent vinyl chloride sheet was changed to a self-adsorbing white urethane foam (PureCell manufactured by Inoac Corporation, thickness 1000 μm), and an adhesive sheet for non-slip construction was obtained in the same manner as in Example 2 except that an adhesive layer was not provided. ..

(Comparative Example 2)
The transparent vinyl chloride sheet was changed to one that was not embossed, and a non-slip adhesive sheet was obtained in the same manner as in Example 3 except that the adhesive layer was not formed.

(Comparative Example 3)
A through hole having the shape shown in Table 1 is formed in the transparent vinyl chloride sheet used in Comparative Example 2, and an epoxy adhesive (TB2081D manufactured by ThreeBond Co., Ltd.) is applied to a thickness of 10 μm to obtain a non-slip adhesive. I got a sheet.

(Example 8)
Toyo Chem Co., Ltd. BPS5303-2OJI 100 parts by mass was mixed with 5 parts by mass of Coronate L manufactured by Tosoh Corporation to obtain a pressure-sensitive adhesive. The above adhesive was applied to a release paper (blue glassine 82 manufactured by Oji Tac Co., Ltd.) with a lip coater and heated at 100 ° C. for 7 minutes to form an adhesive layer (thickness: 120 μm). An embossed transparent vinyl chloride sheet having a thickness of 300 μm was attached to the exposed surface of the pressure-sensitive adhesive layer to form a through hole similar to that in Example 1. In this way, the non-slip construction adhesive sheet of Example 8 was obtained.

(Example 9)
As the surface layer, white Yupo (manufactured by Yupo Corporation, New Yupo FGS, thickness: 200 μm) is used, the thickness of the adhesive layer is as shown in Table 1, and the shape of the through hole is as shown in Table 1. An adhesive sheet for non-slip construction was obtained in the same manner as in Example 1 except that the change was made.

(Example 10)
A transparent PET film (manufactured by Toray Industries, Inc., Lumirror S-10, thickness: 188 μm) was used as the surface layer, and the same as in Example 1 except that the shape of the through hole was changed to be as shown in Table 1. Obtained an adhesive sheet for non-slip construction.

(evaluation)
<Non-slip construction method>
After cleaning the floor material made of ceramic tile, the non-slip adhesive sheet obtained in Examples and Comparative Examples was attached to the floor surface. Then, a filler containing a silicone resin and glass beads (particle size: 80 μm) was filled in the through holes and cured at room temperature for 24 hours. Then, the non-slip adhesive sheet was peeled off from the floor surface to form an anti-slip layer.
The handleability during non-slip construction was evaluated according to the following evaluation criteria.

<Easy to apply and leakage of filler>
When attaching the non-slip adhesive sheet to the floor surface, it was evaluated whether or not it could be attached to any place. In addition, the filler was filled in the through hole, and the presence or absence of resin leakage around the through hole was confirmed.
◯: There is no air bubbles getting caught between the adhesive layer and the floor surface, and it can be attached to any position on the floor surface. In addition, the filler can be filled in the through holes without leakage.
Δ: It takes time to apply due to the biting of some air bubbles between the adhesive layer and the floor surface surface, but it can be applied to any position on the floor surface. In addition, the filler can be filled in the through holes without leakage.
X: Due to air bubbles getting caught between the adhesive layer and the floor surface surface, reattachment work is required many times. Also, the filler leaks out of the through hole.

<Easy to peel off>
After filling the non-slip adhesive sheet attached to the floor with a filler, it is easy for the operator to peel off the non-slip adhesive sheet from the floor in the process of peeling off the non-slip adhesive sheet. I evaluated it.
◯: The non-slip adhesive sheet can be smoothly peeled off from the floor.
△: Although it uses a lot of force, the non-slip adhesive sheet can be peeled off from the floor.
×: The non-slip adhesive sheet cannot be peeled off from the floor, and it stops in the middle of peeling.

<Remaining glue>
After the operator peeled off the non-slip adhesive sheet from the entire floor surface, the adhesive residue on the adhesive layer was visually confirmed.
◯: There is no adhesive residue on the floor surface.
Δ: Glue residue is generated on a part of the floor surface.
X: Causes adhesive residue on the entire floor surface.

<Spatula (spatula) surface slipperiness>
When filling the through holes of the non-slip adhesive sheet with the filler, squeegee work was performed with a spatula and the slipperiness was evaluated.
◯: The spatula slides smoothly on the surface of the non-slip adhesive sheet, and the filler can be filled in the through hole without biting air bubbles.
Δ: The spatula slides smoothly on the surface of the non-slip adhesive sheet, but the filler can be filled in the through hole while biting air bubbles.
X: The spatula does not slip on the surface of the non-slip adhesive sheet, and the filler cannot be filled in the through hole.

<Easy to check filling>
When the filler was filled on the non-slip adhesive sheet, the ease of recognition of the filled portion was evaluated.
◯: The filled part and the uncoated part on the non-slip adhesive sheet can be clearly recognized.
Δ: The filler-coated part and the uncoated part on the non-slip adhesive sheet can be recognized somehow. There is a local coating omission.
X: The difference between the filled part and the uncoated part on the non-slip adhesive sheet cannot be recognized. Paint through occurs.

<Anti-slip layer properties (anti-slip properties)>
The slip resistance of the anti-slip layer was evaluated by the slip resistance coefficient (CSR value) measured by the slip resistance test of the floor material specified in JIS A 1454.
⊚: CSR value is 0.50 or more ○: CSR value is 0.45 or more and less than 0.50 Δ: CSR value is 0.40 or more and less than 0.45 ×: CSR value is less than 0.40

<Adhesive strength evaluation (before formation of through hole)>
After cutting the non-slip adhesive sheet before forming the through hole to 25 mm × 100 mm, the release paper (separator) was peeled off, crimped onto a SUS plate with a 2 kg load roll, and left at room temperature for 30 minutes. After that, using a tensile tester (model: Autograph AGS-J, manufactured by Shimadzu Corporation), the peel strength when peeling 180 degrees at a tensile speed of 300 mm / min was measured according to JIS Z 0237, and the peel strength was measured. The adhesive strength before forming the through hole was used.

<Adhesive strength evaluation (after forming through holes)>
After cutting the non-slip adhesive sheet after forming the through hole into 50 mm × 100 mm, the release paper (separator) was peeled off, crimped onto a SUS plate with a 2 kg load roll, and left at room temperature for 30 minutes. After that, using a tensile tester (model: Autograph AGS-J, manufactured by Shimadzu Corporation), the peel strength when peeling 180 degrees at a tensile speed of 300 mm / min was measured according to JIS Z 0237, and the peel strength was measured. The adhesive strength after the formation of the through hole was used.

When the non-slip adhesive sheet obtained in the examples is used, the anti-slip layer is formed in a desired shape, and sufficient anti-slip performance can be exhibited. In particular, when the non-slip adhesive sheet obtained in Examples 1 to 7 is used, the non-slip adhesive sheet is excellent in ease of sticking and peeling, and the filler or the like is leveled with a spatula at the time of construction. The slipperiness of the spatula was good, and the handling property was excellent.

10 Surface layer 20 Adhesive layer 30 Through hole 35 Filler 50 Anti-slip layer 100 Non-slip construction adhesive sheet P Floor surface

Claims (10)

It has a surface layer and a pressure-sensitive adhesive layer, and has a plurality of through holes penetrating the surface layer and the pressure-sensitive adhesive layer.
An adhesive sheet for non-slip construction in which at least the exposed surface of the surface layer is embossed. The non-slip construction adhesive sheet according to claim 1, wherein the number of through holes is 3 to 1000 per 100 cm ² of the non-slip construction adhesive sheet. The non-slip adhesive sheet according to claim 1 or 2, wherein the area per through hole is 0.01 to 20.0 cm ² . The non-slip adhesive sheet according to any one of claims 1 to 3, wherein the total area of the through holes is 2 to 60% of the total area of the anti-slip adhesive sheet. The non-slip adhesive sheet according to any one of claims 1 to 4, which has a thickness of 0.05 to 1 mm. The non-slip adhesive sheet according to any one of claims 1 to 5, wherein the surface layer has a thickness of 100 to 500 μm. The non-slip adhesive sheet according to any one of claims 1 to 6, wherein the adhesive layer has removability. The non-slip adhesive sheet according to any one of claims 1 to 7, wherein the pressure-sensitive adhesive layer has an adhesive strength of 0.5 to 10.0 N / 50 mm. The non-slip adhesive sheet according to any one of claims 1 to 8, wherein the surface layer is a plastic film. A release agent on one surface side of the pressure-sensitive adhesive layer of the non-slip adhesive sheet according to any one of claims 1 to 9, which is opposite to the surface on which the surface layer is laminated. Adhesive sheet for non-slip construction with a release agent layer having a layer.

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