JP2002121503A - Double-faced adhesive tape for flooring material fixation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double-faced adhesive taper for flooring material fixation capable of easily and surely perform the work of pasting a flooring material while positioning it accurately, thereby easily realizing the flooring work of detailed finishing, for example, sure grooved-and-tongued joint and accurate meeting of the design of woodgrain, etc., for even an unskilled man while realizing a reduced work time and work load. SOLUTION: This double-faced adhesive tape for flooring material fixation 41 comprises an adhesive layer having bumps and dips throughout the surface facing the ground surface, and both the concave part of the adhesive layer 36 and the convex part of the adhesive layer 35 comprise an adhesive, and when the flooring material is positioned only the convex part of the adhesive layer 35 is in contact with the ground surface and adhesion area is small, therefore, can be moved easily, and after its position is decided, by pushing the flooring material to the ground surface, both the concave part of the adhesive layer 36 and the convex part of the adhesive layer 35, that is, all the adhesive layer, exert adhesive force and the flooring material is firmly adhered to the ground surface without slippage. Furthermore, this tape also has a releasing liner 34 which keeps the bumps and dips on the adhesive layer intact and the bumps and dips opposite to the ones on the adhesive layer is formed on itself.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a double-sided pressure-sensitive adhesive tape used for attaching a floor material or the like, and more particularly, a pressure-sensitive adhesive layer on the side in contact with a floor base surface has an uneven shape, The present invention relates to a double-sided pressure-sensitive adhesive tape provided with a release liner for protecting the unevenness.

[0002]

2. Description of the Related Art An adhesive tape is obtained by applying a non-woven fabric, paper, plastic film, foam, or the like as a base material and impregnating one or both surfaces thereof with an acrylic or rubber-based adhesive. In general, it is in the form of a wound body or a sheet. Widely used for packaging, office,
It is used in all fields, such as for medical use, building materials, and semiconductor manufacturing. As an adhesive tape, a single-sided adhesive tape having an adhesive ability on one side is mainly used, but a double-sided adhesive tape having an adhesive ability on both sides is also often used in order to adhere an adherend to an adherend. In particular, in building applications, it is used for attaching building materials.

Conventionally, in a bonding operation of a building material, as a means for bonding a flooring material such as a flooring board to a lower ground surface of a building floor, a method using a vinyl acetate resin emulsion adhesive or an epoxy adhesive is used. Was adopted.

However, there is a problem that a vinyl acetate resin emulsion adhesive freezes at 0 ° C. or less,
Since the epoxy-based adhesive contains an organic solvent, it requires a complicated operation that requires sufficient ventilation before use. In addition, when floor materials are bonded using these adhesives,
Since it is difficult to make the thickness of the adhesive layer uniform, the thickness is uneven, and the floor material is squeezed. In addition, there is a problem that it takes time to cure these adhesives.

Therefore, a method of bonding floor materials using a double-sided tape has been used. This is a method in which a release material on an adhesive layer upper surface of a double-sided tape fixed to a ground under a floor is peeled off, and a floor material is pressure-bonded to a ground surface.

[0006] However, if the displacement occurs after the crimping, the floor material once crimped cannot be easily peeled off.
In addition, there is a problem that the double-sided tape breaks and cannot be used again even if it is peeled off. As described above, the ability required for a double-sided pressure-sensitive adhesive tape, together with its strong adhesive strength, besides the generally required ability to immediately adhere firmly to the object to be adhered when the double-sided tape is brought into contact with the object to be adhered, There are many situations in which a final strong adhesive force is required to be exerted after moving any of the double-sided tape and the adherend while positioning the adhesive and the adherend in contact with each other. .

Various proposals have conventionally been made in response to such circumstances. According to Japanese Patent Application Laid-Open No. 7-122329, a method of constructing floorboards has been proposed. In this method, as shown in FIG. 8, a band-shaped double-sided adhesive tape 1 having a release paper A on the surface of an adhesive layer 2 is used. The pressure-sensitive adhesive layer 2 corresponding to the length up to the width or more is removed from the release paper A, and the portion Ar of the release paper A from which the pressure-sensitive adhesive layer 2 has been removed has a longitudinal shape at the end 3 of the remaining pressure-sensitive adhesive layer 2. Processing to wrap in the direction has been performed. The pre-processed strip-shaped double-sided adhesive tape 1 is adhered to the base surface, the floor material to be constructed is placed on the folded release paper Ar, and the positioning is performed. Is pulled out in the longitudinal direction of the strip-shaped double-sided adhesive tape 1 by the width of the floor material and pressed.

However, this method requires an operation of first removing the pressure-sensitive adhesive layer from the release paper, and has a problem that the operation is complicated and lacks economy.

According to JP-A-6-23484,
There has been proposed a construction method in which the adhesive force of the adhesive layer of the double-sided tape is temporarily stopped using water or the like, positioning is performed, and then the adhesive force is developed by evaporating water.

[0010] However, when water is used, there is a problem that the work becomes more complicated and that the wood used for the flooring material is warped after construction.

According to Japanese Patent Application Laid-Open No. 7-310057, as shown in FIG. 4, a convex portion of the non-adhesive substance 6 is formed on one surface of the adhesive sheet 5, and after positioning, the non-adhesive substance 6 is pressed by a pressing force. Move it below the surface of the adhesive sheet 5,
There has been proposed a construction method capable of performing bonding.
According to JP-A-10-36779, as shown in FIG. 7, an adhesive tape 10 in which a number of non-adhesive substance bar members 14 are arranged beyond the adhesive surfaces 12 and 13 is proposed. A stick member 14 is sometimes attached to the back of the floor material which is an adhesive.
There is proposed a construction method in which an adhesive tape 10 is attached in advance so that the surface on which is disposed is the lower surface, and if the adhesive tape 12 is placed on the floor base surface, which is an object to be adhered, the adhesive surface 12 does not contact so that the position can be adjusted. ing.

However, in these construction methods, the pressure-sensitive adhesive sheet requires a predetermined thickness or more, and
There is a problem that it is difficult to control the adhesive force, for example, the non-adhesive substance remains on the adhesive surface because the adhesive force is developed by the pressure welding, and the adhesive force is reduced. In addition, the material is limited, for example, the base material must be a material that can easily push the non-adhesive substance, and in the form of a roll, the non-adhesive substance is buried in the adhesive layer before use due to pressure, making it difficult to adjust the position There was also the problem of becoming.

According to Japanese Patent Application Laid-Open No. 11-21520, as shown in FIG. 5, the adhesiveness of a covering material 51 formed by punching a large number of openings 54 in a sheet body having one side peelable. A pressure-adhesive double-sided pressure-sensitive adhesive tape 53 having a surface 55 laminated on one adhesive surface 52 of the double-sided pressure-sensitive adhesive tape is disclosed. According to Japanese Patent Application Laid-Open No. H11-29750, as shown in FIG.
A pressure-sensitive adhesive double-sided pressure-sensitive adhesive tape 63 laminated on one pressure-sensitive adhesive layer 62 of a foamed sheet laminate 64 composed of two types of foamed sheets laminated with the same is proposed.

However, in both cases, since the non-adhesive coating material layer is in contact with the adherend, the adhesive area cannot be effectively used, and if the non-adhesive coating material remains, the adhesive strength decreases. There was a possibility that it would be reduced and lead to peeling. In addition, since it is necessary to press the coating material into the pressure-sensitive adhesive layer or the base material by pressing, there is a problem to be solved that the base material used is limited to a material such as a foam which is easily pressed.

[0015]

Therefore, as the adhesive tape used for laying the floor material, it is easy to finely adjust the position while adjusting the arrangement position of the floor material, and after the arrangement position is determined, it is sufficient without displacement. It is excellent in basic ability such as being able to firmly adhere with a permanent adhesive force, and has high work efficiency at the site and no extra waste is generated. Without delamination
In addition, there has been a demand for a double-sided pressure-sensitive adhesive tape which does not limit the materials used in the substrate layer and the like, can easily reduce the cost, and hardly causes a change or a decrease in performance in use in the form of a sheet or a roll.

The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to easily perform a sticking operation that requires accurate positioning, such as a flooring work. The present invention provides a double-sided pressure-sensitive adhesive tape for fixing flooring materials that can be reliably implemented, thereby reducing the work time and the workload when laying flooring materials. An object of the present invention is to make it easy to realize a floor material laying construction work with a good finish over details, such as ensuring that the claw is cleaved and that the wood pattern is accurately matched.

The present inventors have conducted various studies on the structure of the pressure-sensitive adhesive tape and a mechanism for exhibiting a sufficient adhesive force constantly with a low initial adhesive force. At least the surface in contact with the ground surface is made of an adhesive layer with irregularities formed over the entire area, the concave portions and the convex portions are also made of an adhesive, and only the convex portions are in contact with the ground surface when adjusting the position of the floor material. Because it is in contact, the adhesive area is small and it can be easily moved, and after the position is determined, the floor material is pressed against the ground surface, so that both the concave and convex parts, that is, the entire pressure-sensitive adhesive layer exerts the adhesive effect The floor material is firmly adhered to the floor material without displacement, and furthermore, a floor material fixing having a release liner having irregularities opposite to the adhesive layer which holds the irregularities of the adhesive layer without crushing the irregularities. For double sided adhesive tape by above eyes I found that I could achieve my goal.

[0018]

That is, according to the present invention, there is provided a double-sided pressure-sensitive adhesive tape for attaching a floor material to a ground under a floor of a building, wherein the double-sided pressure-sensitive adhesive tape is provided on both sides of a base material layer and a base material layer. A pressure-sensitive adhesive layer, and at least one surface of the pressure-sensitive adhesive layer opposite to the base material layer is a double-sided tape having an uneven shape in which a large number of substantially independently independent convex portions are formed, and a double-sided tape. On the side of the uneven surface of the pressure-sensitive adhesive layer, an uneven release liner is provided, and the surface of the uneven release liner facing the pressure-sensitive adhesive layer, the uneven shape of the adhesive layer is a convex portion and a concave portion. Are formed in reverse, for example, the convex portion and the concave portion of the pressure-sensitive adhesive layer have a concave portion and a convex portion that form a relationship between a mold and a molded body, and the concave portion of the release liner is a convex portion of the pressure-sensitive adhesive layer. The present invention provides a double-sided pressure-sensitive adhesive tape for fixing flooring, characterized in that it can protect the floor material.

In the present invention, it is preferable that a plurality of particles are contained at least at the tip of the convex portion of the pressure-sensitive adhesive layer. In addition, it is preferable that the adhesive force ratio between the case where a plurality of particles is contained and the case where a plurality of particles are not contained at least at the tip of the convex portion of the pressure-sensitive adhesive layer is approximately 70: 100 or more.

In the present invention, on the uneven surface of the pressure-sensitive adhesive layer, it is preferable that the static frictional force is approximately 30 N or less, and the adhesive force is approximately 6.0 N / 25 mm or more. In the double-sided pressure-sensitive adhesive tape for fixing flooring material of the present invention, the diameter of the convex portion on the uneven surface of the pressure-sensitive adhesive layer is approximately 10 to 500 μm, and the interval between adjacent convex portions is approximately 100 to 1000 μm. Is also preferred.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the double-sided pressure-sensitive adhesive tape for fixing flooring material of the present invention will be specifically described, but the present invention is not construed as being limited thereto. Various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art without departing from the scope of the invention. The present invention is an improved double-sided pressure-sensitive adhesive tape used for attaching a floor material to a ground under a floor of a building. It may be in the form of a sheet or a roll, and its form is not limited. The double-sided pressure-sensitive adhesive tape for fixing flooring of the present invention includes a double-sided tape and a release liner. The double-sided tape includes a base layer and a pressure-sensitive adhesive layer, and at least one surface of the pressure-sensitive adhesive layer has substantially uniform irregularities. After all, on the uneven surface side of the adhesive layer of the double-sided tape,
A release liner having an uneven surface is provided. The concave and convex surface of the release liner has a convex portion and a concave portion which are opposite to the concave and convex shape of the pressure-sensitive adhesive layer of the double-sided tape, and can be protected so as to wrap the convex portion of the pressure-sensitive adhesive layer.

In the present invention, as a means for facilitating the adjustment of the positioning of the floor material performed during the work of laying the floor material, a surface in contact with the object to be adhered is provided with a pressure-sensitive adhesive layer used in the prior art. Does not use an independent non-adhesive material, that is, the entire surface in contact with the object to be adhered is an adhesive layer. Naturally, the non-adhesive material independent of the adhesive layer is adhered by pressure. There is a great feature in that a mechanism of embedding in the agent layer to develop strong adhesive strength is not taken. This makes it difficult for the non-adhesive material to remain on the surface in contact with the object to be adhered, so that the non-adhesive material hardly remains on the surface in contact with the object to be adhered. In addition, the conditions such as the amount of adhesive used to secure the thickness of the pressure-sensitive adhesive layer are hardly limited, and the cost can be easily reduced.

Further, as a means for providing a release liner capable of protecting the above-mentioned convex portion of the pressure-sensitive adhesive layer so as to wrap around the convex portion, an unevenness of the pressure-sensitive adhesive layer is formed by applying an adhesive on a release liner having a concave-convex shape. There is also a feature to do. In this case, the concavities and convexities formed on the release liner and the concavities and convexities of the pressure-sensitive adhesive layer are formed in reverse, and in this case, the relationship between the mold and the molded body is obtained. However, even if the pressure-sensitive adhesive layer is wrapped or the sheet is not easily pressed, the unevenness of the pressure-sensitive adhesive layer will not be crushed when the pressure-sensitive adhesive layer is laminated during transportation or erroneously applied during work.

Therefore, the double-sided pressure-sensitive adhesive tape for fixing flooring of the present invention can easily perform positioning and fine-tuning of the position.
After the positioning, the adhesive layer exhibits a sufficient adhesive strength and can stably exhibit the basically required ability to attach a patch without peeling. for that reason,
Floor material fixing double-sided adhesive tape of the present invention, when sticking and constructing flooring such as flooring board under the floor of the building,
It can be used particularly advantageously.

In the above-mentioned double-sided pressure-sensitive adhesive tape for fixing floor materials according to the present invention, it is preferable that the convex portion of the pressure-sensitive adhesive layer contains a plurality of particles. When the particles are contained in the individual protrusions as compared with the protrusions not containing the particles, the adhesive strength is weakened. Therefore, for the entire pressure-sensitive adhesive layer, if the number of protrusions is the same, in other words, if the area of the pressure-sensitive adhesive layer in contact with the adherend during position adjustment is the same, a plurality of When the particles are contained, the adhesive strength of the pressure-sensitive adhesive layer to a floor material as a substance to be adhered can be reduced. In addition, when the same adhesive force is exerted even when the particles are contained, as in the case where the particles are not contained, the number of convex portions of the pressure-sensitive adhesive layer in contact with the floor material, which is the substance to be adhered, can be increased. In any case, the work at the time of positioning becomes easier. The plurality of particles may be present on the entire convex portion of the pressure-sensitive adhesive layer, but is preferably at least at the tip, and more preferably contained only at the tip.

In the case where a plurality of particles are contained at least at the tip of the convex portion of the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape for flooring according to the present invention, the particles are contained in the pressure-sensitive adhesive layer, and Part of the surface is exposed on the convex surface of the pressure-sensitive adhesive layer, and the particles are not a non-adhesive material independent of the pressure-sensitive adhesive layer. It does not remain on the surface and reduce the adhesive strength.

When a plurality of particles are contained at least at the tip of the convex portion of the pressure-sensitive adhesive layer, in order to achieve both a weaker adhesive force at the time of positioning and a stronger adhesive force at the time of fixing, the adhesive force at the time of not containing the particles is considered. Is preferably about 70: 100 or more, more preferably 75: 100 to 9
0: 100.

On the uneven surface of the pressure-sensitive adhesive layer, the static friction force is generally about 30 to improve the workability at the time of positioning.
N or less, more preferably 15N or less.
The adhesive strength is preferably about 6.0 N / 25 mm or more, more preferably 8.0 N / 25 mm or more, so as not to peel off again at the time of fixing.

Further, in the double-sided pressure-sensitive adhesive tape for fixing flooring material of the present invention, in order to improve the workability at the time of positioning and to realize the strong adhesiveness at the time of fixing as described above, the unevenness of the pressure-sensitive adhesive layer is reduced. On the surface, the shape of the convex portion may be a hemisphere, a cone, a truncated cone, or the like, and the shape is not limited, but a truncated cone is more preferable. The diameter of the convex part is preferably about 10 to 500 μm at its maximum part, and when the convex part is a truncated cone, the diameter of the lower part is preferably 50 to 500 μm, and the diameter of the upper part is preferably 30 to 450 μm. . The height of the projection is generally 10 to 500 μm
And more preferably 100 to 400 μm. The interval between adjacent protrusions is approximately 100 to 1
000 μm, more preferably 2 μm.
It is 00 to 800 μm.

In the present invention, when the surface of the uneven release liner on the side of the pressure-sensitive adhesive layer is treated with a release agent such as a silicone-based release agent, a long-chain alkyl-based release agent, or a fluorine-based release agent, the pressure-sensitive adhesive layer It is preferable because the releasability between the resin and the release liner is improved.

In the double-sided pressure-sensitive adhesive tape for fixing flooring material of the present invention, among the pressure-sensitive adhesive layers provided on both surfaces of the base material layer, the pressure-sensitive adhesive layer having an uneven surface is at least one surface. Normally, usually, a non-uneven surface of the pressure-sensitive adhesive layer is stuck to the floor material, and the uneven surface is stuck to the floor base surface to adjust the position.

The pressure-sensitive adhesive layer having an uneven surface may be provided on both sides of the base material layer. In this case, the position of both the back surface of the floor material to which the double-sided pressure-sensitive adhesive tape for fixing the floor material adheres and the floor base surface can be adjusted. For example, in the work in which the double-sided adhesive tape is not stuck on the entire back surface of the floor material, it becomes easy to re-attach the double-sided adhesive tape to the position of the back surface of the floor material where it is easier to work, and work in a wider work range The performance is improved.

In the present invention, a flat release liner may be provided on the side opposite to the base material layer side of the pressure-sensitive adhesive layer on which the uneven release liner is not provided. In this case,
Protects the adhesive layer during storage, transportation and work.

Hereinafter, the double-sided pressure-sensitive adhesive tape for fixing floor materials of the present invention will be described in more detail with reference to the drawings. FIG.
Is a cross-sectional view showing an embodiment of the double-sided pressure-sensitive adhesive tape for flooring of the present invention, among the pressure-sensitive adhesive layers provided on both surfaces of the base material layer, one surface of the pressure-sensitive adhesive having an uneven surface Layers. As shown in FIG. 1, a double-sided adhesive tape 4 for fixing floor material
1 includes a base material layer 32, an uneven pressure-sensitive adhesive layer 31 provided on one surface of the base material layer 32, and a planar pressure-sensitive adhesive layer 37 provided on the other surface, The surface of the double-sided pressure-sensitive adhesive tape 41 for fixing the floor material, which is opposite to the substrate layer 32 side of the concave-convex adhesive layer 31 (hereinafter, also referred to as the concave-convex surface), has a concave-convex release liner 34 and a flat surface. A flat release liner 33 is provided on the surface of the pressure-sensitive adhesive layer 37 opposite to the substrate layer 32 side.
Are provided, respectively.

As shown in FIG. 1, in the double-sided pressure-sensitive adhesive tape 41 for fixing a floor material, the uneven surface of the uneven pressure-sensitive adhesive layer 31 has an independent pressure-sensitive adhesive layer convex portion substantially uniformly formed on the entire surface thereof. 35, the tip of which contains particles 38. The particles 38 protrude from the pressure-sensitive adhesive layer (that is, the pressure-sensitive adhesive layer convex portion 3).
In 5), a part of the surface is exposed on the uneven release liner 34 side. The convex portion 35 of the concave-convex pressure-sensitive adhesive layer 31 includes a concave portion 45 of the release liner of the concave-convex release liner 34 and a concave portion 36 of the pressure-sensitive adhesive layer 36 of the concave-convex pressure-sensitive adhesive layer 31.
Is a release liner projection 46 of the uneven release liner 34.
And conversely, for example, are formed so as to form a relationship between a mold and a molded body.

The uneven surface of the uneven release liner 34 is such that the adhesive layer convex portion 35 is crushed before the double-sided adhesive tape 41 for fixing a floor material is used, and unfortunately, a strong adhesive force from the beginning. Is formed for the purpose of protecting the pressure-sensitive adhesive layer convex portion 35 so as not to exhibit the pressure-sensitive adhesive layer 3, it is not necessary to have a complete relationship between the mold and the molded body.
A gap may be formed between the first pressure-sensitive adhesive layer convex portion 35 and the release liner concave portion 45 of the uneven release liner 34.

In the uneven release liner 34 and the planar release liner 33, the surface on the side of the pressure-sensitive adhesive layer is subjected to a release agent treatment such as a treatment with a silicone-based release agent. Has good releasability. When the uneven pressure-sensitive adhesive layer 31 is formed of a material having good releasability with respect to the uneven release liner 34 and the flat pressure-sensitive adhesive layer 37 is formed of a material having good releasability with respect to the flat release liner 33, Such a release agent treatment need not be performed.

FIG. 2 is a cross-sectional view showing another embodiment of the double-sided pressure-sensitive adhesive tape for fixing flooring according to the present invention, wherein the pressure-sensitive adhesive layers provided on both sides of the base material layer have uneven surfaces. Adhesive layer. As shown in FIG. 2, the floor material fixing double-sided pressure-sensitive adhesive tape 42 includes a base material layer 32 and an uneven pressure-sensitive adhesive layer 31 provided on both sides of the base material layer 32. An uneven release liner 34 is provided on the uneven surface of the layer 31. The double-sided pressure-sensitive adhesive tape for fixing flooring material 42 includes the uneven adhesive layer 31 and the uneven release liner 34 provided on one side of the double-sided pressure-sensitive adhesive tape 41 for fixing flooring material described above with reference to FIG. It is a thing.

Now, an example of a method of manufacturing the double-sided pressure-sensitive adhesive tape 41 for fixing a floor material shown in FIG. 1 will be described below. First, an olefin resin such as polypropylene or polyethylene is coated on both sides of, for example, an ultra-thin kraft paper, and then one side thereof is subjected to silicone treatment with a gravure coater or the like to obtain a release liner. In addition, as described above, when the pressure-sensitive adhesive layer having good releasability to the olefin resin is used for the double-sided pressure-sensitive adhesive tape 41 for fixing the floor material, the silicone treatment may not be performed. The olefin resin layer of the obtained release liner is embossed, and the release liner concave portion 45 is formed substantially uniformly on the surface thereof to obtain the uneven release liner 34.

Next, after flowing particles such as glass beads and polypropylene beads into the release liner recess 45 of the uneven release liner 34 so as not to be excessive, the entire surface of the uneven release liner 34 including the recess containing the particles is poured. Is applied to form an uneven adhesive layer 31.
Thereafter, a thin film of polyester, polypropylene, or the like is attached to the uneven pressure-sensitive adhesive layer 31 as the base material layer 32 to obtain a single-sided pressure-sensitive adhesive sheet. Further, a pressure-sensitive adhesive is applied to a separately prepared flat release liner 33 and bonded to the single-sided pressure-sensitive adhesive processed sheet, whereby the double-sided pressure-sensitive adhesive tape 41 for fixing a floor material of the present invention is obtained.

Next, a method of laying a floor material using the double-sided adhesive tape 41 for fixing a floor material of the present invention shown in FIG. 1 will be described. First, the double-sided adhesive tape 41 for fixing the floor material
Is peeled off, and the double-sided pressure-sensitive adhesive tape 41 for fixing a flooring material of the present invention is adhered to a flooring material, for example, a flooring plate, with the uneven release liner 34 attached. Next, the flooring plate is placed on the ground under the floor of the building with the uneven release liner 34 attached, and rough positioning is performed. Thereafter, the uneven release liner 34 is removed, and the flooring board is again placed on the ground under the floor of the building,
Fine-tune positioning.

After the positioning is completed, finally, the flooring plate is adhered to the ground surface by pressing the flooring plate from above toward the ground below the floor. By repeatedly performing the above-described operations, the flooring boards can be sequentially bonded and constructed on the ground under the floor. Note that the rough positioning may be omitted.

Hereinafter, the constituent materials of the double-sided pressure-sensitive adhesive tape for fixing floor materials according to the present invention will be described. As described above, the double-sided pressure-sensitive adhesive tape for fixing a flooring material is composed of the base material layer and the pressure-sensitive adhesive layers provided on both surfaces of the base material layer. The pressure-sensitive adhesive layer is used for bonding the floor material and the base material layer, and the base surface and the base material layer. If the base material layer, the floor material, and the base surface have good adhesiveness, the type is as follows. There is no particular limitation.
In general, a solvent-based acrylic adhesive, a solvent-based natural rubber-based adhesive, a solvent-based block copolymer-based adhesive, an emulsion-based acrylic adhesive, a hot-melt-based acrylic adhesive, and the like can be used. It is preferable to use an acrylic pressure-sensitive adhesive from the viewpoint of durability. Although the thickness of the pressure-sensitive adhesive layer is not limited, it is generally about 25 to 125 μm.

When the particles are put in the convex portions of the uneven pressure-sensitive adhesive layer, the particles are not limited as long as they do not have an adhesive force, and are usually made of glass beads, polypropylene beads, alumina particles, Acrylic beads are used. The diameter of the particles is preferably approximately 5 to 100 μm, more preferably 10 to 80 μm.

The substrate layer is used for holding the pressure-sensitive adhesive layer, and therefore, the type thereof is not particularly limited as long as it can hold the pressure-sensitive adhesive layer. Usually, polypropylene, olefin resin such as polyethylene, polyethylene terephthalate, plastic film such as polyvinyl chloride, half-kraft paper, woodfree paper, crecoat paper, paper such as Japanese paper, woven fabric made of fibers such as rayon, polyester, nylon, acrylic, Metal foil such as aluminum, copper, and stainless steel can be used. Generally, a foam material or the like is used between the floor material and the double-sided adhesive tape in order to enhance a sound-deadening effect such as footsteps. As this base material layer, a foam base material such as polyethylene, urethane, acrylic, or polybutadiene is used. By using a thick base material such as silicone rubber and butyl rubber, it is also possible to provide the base material layer with a sound-deadening effect such as footsteps. The thickness of the substrate layer is also not limited, but is generally about 12 μm to 100 μm, except for the case where the substrate layer is provided with a noise reduction effect, and is 25 μm to 75 μm because strength is obtained and no cost is required.
The degree is more preferred.

The planar release liner provided on the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape for flooring,
A release liner or release paper generally used for a double-sided tape may be used. The planar release liner needs to be easily rolled without deteriorating the adhesive properties of the adhesive, and is made of a substrate that is easily peeled off from the adhesive. The type of the substrate is not particularly limited as long as it can be easily produced in a roll shape without deteriorating the adhesive properties of the adhesive, but it is usually not limited to olefin resins such as polypropylene and polyethylene, polyethylene terephthalate, and vinyl chloride. And a woven fabric made of fibers such as rayon, polyester, nylon, and acrylic.

The embossed release liner provided on the pressure-sensitive adhesive layer of the double-sided pressure-sensitive adhesive tape for fixing flooring was coated with the above-mentioned plastic film or a plastic film as a workable material. It is preferred to use kraft paper.

Depending on the type of the pressure-sensitive adhesive, a release effect between the uneven release liner and the planar release liner and the pressure-sensitive adhesive can be obtained without applying a release agent treatment for laminating the release agent on the base material (for example, polypropylene). , An olefin resin such as polyethylene) does not require a release agent, but in other cases, it is necessary to apply a release agent treatment to the surface in contact with the pressure-sensitive adhesive layer. The type of release agent is not particularly limited as long as it can be easily peeled off from the pressure-sensitive adhesive and can be bonded to the substrate, but is usually a silicone-based release agent, a long-chain alkyl-based release agent, or a fluorine-based release agent. Etc. can be used. or,
Although the thickness of the release agent is not limited, it is usually 1 to 150 μm.

[0049]

EXAMPLES Hereinafter, the present invention will be described based on examples, but the present invention is not limited to these examples. Example 1 Release paper was obtained by coating both sides of a kraft paper having a thickness of 0.155 mm with polyethylene of 0.025 mm and applying a silicone release substance on both sides sufficient to obtain a complete coating. . Then, the polyethylene layer on one side of the release paper was embossed, and approximately 1000 depressions per square centimeter were provided at equal intervals in the vertical and horizontal rows to produce an uneven release liner. The depressions, or depressions, in the textured release liner are inverted frustoconical with a depth of about 0.025 mm, with a bottom diameter of the depressions of about 0.05 mm and a top diameter of the depressions of about 0.07 mm.
And Using this uneven release liner, glass beads having a diameter of 5 to 20 μm are poured into the concave portions of the embossed surface and coated, and excess glass beads are wiped off with a paper towel, and then dropped with a paint brush to remove particles containing irregularities. Release liner C was obtained. The adhesive D (2.5% of SK Dyne 1310 manufactured by Soken Chemical Co., Ltd. and a cross-linking agent Coronate L manufactured by Nippon Polyurethane Co., Ltd.) is applied to the embossed surface of the particle-shaped uneven release liner C after drying. It was applied so that the amount was 50 g / sqm (per square meter). This adhesive layer has a thickness of 2
A 5 μm polyester film was stuck to obtain a single-sided pressure-sensitive adhesive sheet having an uneven surface.

Next, the same adhesive D was applied to another flat release liner (SLB50WD # 1300 manufactured by Kite Chemical Co., Ltd.) so that the coating amount after drying was 50 g / sqm, and the adhesive D was applied. A flat release liner,
It was affixed to the non-adhesive surface of the single-sided pressure-sensitive adhesive sheet obtained earlier to obtain a double-sided pressure-sensitive adhesive sheet in which one side of the pressure-sensitive adhesive layer was uneven.
The uneven surface of the double-sided pressure-sensitive adhesive processed sheet was subjected to a static friction force measurement test, a 90-degree peeling adhesion force measurement test, a shift performance evaluation, and a sticking performance evaluation. Table 1 shows the results. In addition, each test method and evaluation method are mentioned later.

(Example 2) 14 g / sq basis weight as base material
A double-sided pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the m. rayon nonwoven fabric was used, and the same test and evaluation were performed. Table 1 shows the results.

(Example 3) Two irregular release liners C containing particles shown in Example 1 were prepared, and the pressure-sensitive adhesive D was applied to each embossed surface so that the coated amount after drying was 50 g / sqm. . The two pressure-sensitive adhesive layers were adhered to both sides of a polyester film having a thickness of 25 μm used as a base material to obtain a double-sided pressure-sensitive adhesive sheet in which both sides of the pressure-sensitive adhesive layer were uneven. Then, the same tests and evaluations as in Example 1 were performed. Table 1 shows the results.

COMPARATIVE EXAMPLE 1 As shown in FIG. 3, a double-sided pressure-sensitive adhesive composed of a base material layer 32, a flat pressure-sensitive adhesive layer 37 provided on both surfaces thereof without any irregularities, and a flat release liner 33. A tape 43 was prepared, tested, and evaluated. Flat release liner (SLB50WD # 1 manufactured by Kite Chemical Co., Ltd.)
300) were prepared, and the pressure-sensitive adhesive D was applied to each such that the coating amount after drying was 50 g / sqm. Two flat release liners coated with the pressure-sensitive adhesive D were stuck on both sides of a 25 μm-thick polyester film used as a base material to obtain a double-sided pressure-sensitive adhesive sheet having no unevenness in the pressure-sensitive adhesive layer. Similar tests and evaluations were performed. Table 1 shows the results.

(Comparative Example 2) Except that adhesive B (1.0% of a crosslinking agent Coronate L manufactured by Nippon Polyurethane Co., Ltd. was added to SK Dine 1451 manufactured by Soken Chemical Co., Ltd.) was used as the adhesive. In the same manner as in Example 1, a double-sided pressure-sensitive adhesive sheet having an uneven surface on one side of the pressure-sensitive adhesive layer was obtained, and the same test and evaluation were performed. Table 1 shows the results.

(Comparative Example 3) A double-sided pressure-sensitive adhesive sheet having an uneven surface on one side of a pressure-sensitive adhesive layer was prepared in the same manner as in Comparative Example 1, except that the same pressure-sensitive adhesive B as in Comparative Example 2 was used as the pressure-sensitive adhesive. Then, the same test and evaluation were performed. Table 1 shows the results.
Shown in

[0056]

[Table 1]

(Static Friction Force Measurement Test) The static friction force measurement test was performed in accordance with the friction coefficient test method specified by Japanese Industrial Standard K7125. The static friction force measurement test method will be described with reference to FIGS. Adhesive sheet 92
Cut into a square of 0mm x 50mm, 0.5mm x 30
The sticking allowance W is 10 mm on the stainless plate 91 mm × 50 mm.
mm (width 50 mm direction). Next, the stainless steel plate 91 and the load cell 82 are connected with one string, polished with a No. 280 abrasive paper specified in Japanese Industrial Standard R6253, and adhered on the stainless steel plate 81 specified in Japanese Industrial Standard G4305. A work sheet 92 and a stainless steel plate 91 are placed, and a weight (felt-attached to a 50 mm × 50 mm aluminum plate with a weight of 10 g) is gently placed on the adhesive work sheet 92.
One minute later, the load cell 82 was pulled at a speed of 100 mm / min, and the peak value when the stainless steel plate 91 began to slide was read.

(90 ° Peeling Method Adhesion Force Measurement Test) 9
The 0 degree peeling method adhesion test was conducted according to Japanese Industrial Standard Z0.
The test was performed in accordance with the adhesive tape / adhesive sheet test method specified in 237. The test piece was affixed to a 25 μm-thick polyethylene terephthalate film on the surface opposite to the adhesive surface on which the adhesive-processed sheet was to be measured, and this was 25 mm × 250 mm.
mm.

(Sliding performance evaluation test) A flooring plate was prepared as a floor material, a surface opposite to the adhesive surface to be measured of the pressure-sensitive adhesive sheet was adhered to the flooring plate, and placed on the lower ground of a concrete floor. It was evaluated whether it was possible to shift in the direction. The case where it was easily displaced was indicated by "O", and the case where it was not displaced was indicated by "X".

(Adhesion performance evaluation test) A flooring plate was prepared as a floor material, a surface opposite to the adhesive surface to be measured of the pressure-sensitive adhesive sheet was adhered to the flooring plate, and the pressure was applied after placing it on the lower ground surface of the concrete floor. In addition, close contact, temperature 23
It was left to dry for one day under conditions of 60 ° C. and 60% humidity. Thereafter, the state of adhesion between the flooring board and the ground under the floor was observed, and an attempt was made to peel off the flooring board manually to evaluate. The case where the adhesive was firmly adhered was rated as “O”, and the case where there was a gap between the flooring plate and the ground under the floor or where the flooring plate was easily peeled off was rated as “x”.

(Consideration) As can be seen from Table 1, in Examples 1 to 3 using the double-sided pressure-sensitive adhesive tape for fixing floor materials of the present invention, the shifting performance, that is, the easiness of positioning and the fixing performance are also good. However, in the double-sided adhesive tapes of Comparative Examples 1 to 3, it was difficult to adjust the position of the flooring plate, and
The adhesion between the flooring plate and the ground surface was not good.

[0062]

As described above, according to the double-sided pressure-sensitive adhesive tape for fixing flooring of the present invention, when a flooring such as a flooring board is stuck and constructed under the floor of a building, positioning and positioning can be performed. Fine adjustment of the position is easy, and the floor material can be adhered by expressing the sufficient adhesive force of the pressure-sensitive adhesive layer, so that it is possible to efficiently lay the floor material with good finish over the details. It has an excellent effect of becoming.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a double-sided pressure-sensitive adhesive tape for fixing flooring material of the present invention.

FIG. 2 is a sectional view showing another embodiment of the double-sided pressure-sensitive adhesive tape for fixing flooring material of the present invention.

FIG. 3 is a cross-sectional view showing an example of a conventional double-sided pressure-sensitive adhesive tape.

FIG. 4 is an explanatory view showing a conventional method for constructing floorboards.

FIG. 5 is a cross-sectional view showing another example of the conventional double-sided pressure-sensitive adhesive tape.

FIG. 6 is a sectional view showing still another example of the conventional double-sided pressure-sensitive adhesive tape.

FIG. 7 is a perspective view showing still another example of the conventional double-sided pressure-sensitive adhesive tape.

FIG. 8 is a perspective view showing a belt-shaped double-sided adhesive tape used in another conventional method for constructing floorboards.

FIG. 9 is an explanatory diagram showing a method for measuring a static friction force.

FIG. 10 is another explanatory view showing a method of measuring a static friction force.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Double-sided adhesive tape strip 2 ... Adhesive layer 3 ... End part 5
... Adhesive sheet, 6 ... Non-adhesive substance, 10 ... Adhesive tape, 1
DESCRIPTION OF SYMBOLS 1 ... Base material, 12, 13 ... Adhesive surface, 14 ... Bar member, 31 ...
Uneven pressure-sensitive adhesive layer, 32 ... substrate layer, 33 ... planar release liner, 34 ... uneven release liner, 35 ... pressure-sensitive adhesive layer protrusion,
36: concave portion of adhesive layer, 37: planar adhesive layer, 38: particle, 41: double-sided adhesive tape for fixing floor material, 42: double-sided adhesive tape for fixing floor material, 43: double-sided adhesive tape, 45: concave portion of release liner , 46 ... release liner convex portion, 51 ... coating material, 52 ... adhesive surface, 53 ... pressure-adhesive double-sided adhesive tape,
54 ... opening, 55 ... adhesive surface, 61 ... coating material, 62 ...
Pressure-sensitive adhesive layer, 63: double-sided pressure-sensitive adhesive tape, 64: foam sheet laminate, 55: adhesive surface, 81: stainless steel plate, 82: load cell, 84: weight, 91: stainless steel plate, 92: pressure-sensitive adhesive sheet .

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tatsuya Masuda 3-8-8 Minamihashimoto, Sagamihara City, Kanagawa Prefecture F-term in Sumitomo 3M Limited (Reference) 4J004 AA09 AA13 AB01 CA02 CA04 CA05 CA06 CA08 CB01 CB02 CB04 CC02 CC05 CE02 DA02 DA04 DA05 DB02 EA01 EA05 FA08

Claims (5)

[Claims] 1. A double-sided pressure-sensitive adhesive tape for adhering a floor material to a floor below a floor of a building, comprising: a base material layer; and pressure-sensitive adhesive layers provided on both surfaces of the base material layer. At least one surface of the pressure-sensitive adhesive layer opposite to the base material layer is a double-sided tape in which a large number of independent convex portions are formed substantially uniformly, and a concave-convex surface of the pressure-sensitive adhesive layer of the double-sided tape. The floor material fixing characterized in that a surface facing the pressure-sensitive adhesive layer is provided with a release liner having a concave-convex shape in which a convex portion and a concave portion are formed in reverse to the concave-convex shape of the pressure-sensitive adhesive layer. For double-sided adhesive tape. 2. The double-sided pressure-sensitive adhesive tape for fixing a flooring material according to claim 1, wherein a plurality of particles are contained at least at a tip of the convex portion of the pressure-sensitive adhesive layer. 3. The floor according to claim 2, wherein a ratio of an adhesive force between a case where a plurality of particles is contained and a case where a plurality of particles are not contained is at least about 70: 100 at least at a tip of the convex portion of the pressure-sensitive adhesive layer. Double-sided adhesive tape for material fixing. 4. The uneven surface of the pressure-sensitive adhesive layer has a static frictional force of about 30 N or less and an adhesive strength of about 6.0 N /
The double-sided pressure-sensitive adhesive tape for fixing flooring according to any one of claims 1 to 3, which is 25 mm or more. 5. The uneven surface of the pressure-sensitive adhesive layer, wherein the convex portion has a diameter of approximately 10 to 500 μm, and the interval between adjacent convex portions is approximately 100 to 1000 μm. The double-sided pressure-sensitive adhesive tape for fixing a flooring material according to the above item.