JPH08238163A - Laminated tile carpet - Google Patents

Abstract

PURPOSE: To provide laminated tile carpets capable of protecting the environment and saving resources, capable of being simply manufactured, temporarily sticking two adhesive tile carpets together with adhesive faces, and capable of easily separating two tile carpets for use. CONSTITUTION: A pressure-sensitive adhesive layer 3 is provided on one face of a base material 2 of each of two tile carpets 10. The adhesive layers 3 of the tile carpets 10 are stuck together, laminated, and temporarily fitted, and irregular sections 31 are formed on the surfaces of the adhesive layers 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated tile carpet, the purpose of which is to prevent paper scraps such as release paper from being produced, to conserve the environment and to save resources, and to simplify the production and to use it. Sometimes you can easily separate two tile carpets, office buildings or aircraft,
It is intended to provide a laminated tile carpet that can be suitably used as an interior material or a floor material in a ship or the like. In addition, in this specification, the uneven portion means a portion where the surface is uneven, and includes a corrugated undulating portion.

[0002]

2. Description of the Related Art Generally, a pressure-sensitive adhesive does not require water or solvent as compared with other solvent-based adhesives, and adheres to a predetermined adherend surface with extremely weak pressure such as light finger pressure. It has excellent advantages in that it can be removed and the surface of the adherend is not soiled even when it is peeled off. Therefore, it is currently used in a wide range of fields such as structural or transportation.
In particular, when fixing a carpet, a tile carpet, a cross member, etc. in a house, the demand from general consumers is increasing due to their ease of use and convenience. An example of using such a pressure-sensitive adhesive at home is fixing of carpets. As a fixed carpet for household use, for example, a tile carpet (a) with an adhesive as shown in FIG. 4 is widely used. This tile carpet (a) is composed of two tile carpets (a-a-) in which a pressure sensitive adhesive layer (c) is provided on one surface of a carpet base material (b).
1) is obtained by temporarily adhering the pressure-sensitive adhesive layers (c) and (c) to each other via release paper (d), and peeling off the respective tile carpets (a-1) during use. It was separated from the paper (d) and fixed to the adherend.

However, in the tile carpet (a) with an adhesive as shown in FIG. 4, the release paper (d) remains as paper scraps every time it is used, and in recent years, environmental conservation and resource saving on a global scale. There was a problem that it was not possible to respond immediately to the current situation in which aging is becoming a problem. Therefore, as a pressure-sensitive adhesive sheet that can contribute to environmental protection problems, "double pressure-sensitive adhesive sheet" is disclosed in JP-A-5-64858. In this disclosed technology, as shown in the structure of FIG. 5, the adhesive coated portion (n) is provided on the back surface of the sheet (s).
And the release agent coating portion (r) are formed in a checkered pattern, and the checkered pressure-sensitive adhesive coating portion (n) and the release agent coating portion (r) have a reversed pattern so that they are in conflict with each other. Two
Adhesive coated parts (n) with each other using a sheet of adhesive sheet
It was a double pressure-sensitive adhesive sheet that was stuck so that it would not overlap.

The "double adhesive sheet" of this disclosed technology
Is an excellent technology that can respond immediately to the demands of the times such as environmental conservation and resource saving without the generation of paper scraps due to release paper when using adhesive sheets.

[0005]

However, in the above-mentioned "double pressure-sensitive adhesive sheet", the operation of positioning the pressure-sensitive adhesive coated portions (n) of the pressure-sensitive adhesive sheet during production is complicated and the pressure-sensitive adhesive layer is complicated. When applying (n) to one surface of the sheet, there is a problem that it takes a lot of time and effort to manufacture the pressure-sensitive adhesive sheet, for example, precise application accuracy is required. Further, in this technique, since the pressure-sensitive adhesive coated portion (n) is partially provided on one surface of the sheet (s), the area of the pressure-sensitive adhesive coated portion (n) required for fixing to the adherend. However, there is a problem that the area of the adherend, which is the floor corresponding to the required adhesion area of the carpet, is considerably smaller, and the adhesion to the adherend (floor, etc.) is poor. Moreover, since the pressure-sensitive adhesive-coated portion (n) is partially provided in a checkered pattern or the like, the adhesive force becomes extremely weak at the end of the pressure-sensitive adhesive sheet (s), and the pressure-sensitive adhesive sheet is fixed after being fixed to the adherend. Phenomenon such as (s) rising from the edge occurs, or depending on the sheet, a step may occur between the part where the adhesive is provided after the application and the part where the adhesive is not provided, and There was also a problem of impairing the aesthetic appearance of the seat surface after fixing.

Therefore, according to the present invention, paper waste such as release paper is not generated, and environmental conservation and resource saving can be achieved.
Moreover, precise positioning and coating accuracy are not required, and it is possible to easily manufacture, and even if two tile carpets with adhesive are attached to each other with their adhesive surfaces, they can be temporarily attached. No blocking occurs in the pressure-sensitive adhesive layer, and the two tile carpets can be easily separated at the time of use, and can be suitably used as an interior material or a floor material in an office building, an aircraft, a ship, etc. The object is to provide a laminated tile carpet excellent in manufacturability, usability, environmental protection and the like.

[0007]

The present invention has been made to solve the above problems, and in the laminated tile carpet according to claim 1, a pressure sensitive adhesive layer is provided on one surface of a base material. It is assumed that the tile carpets are formed by laminating and temporarily adhering the adhesive layers of the tile carpets to each other, and that the surface of the adhesive layer is provided with uneven portions. In the laminated tile carpet of claim 2, the height difference between the concave portion and the convex portion in the concave-convex portion is 5 to 300 μm.

[0008]

In the laminated tile carpet according to the first aspect, since paper waste such as release paper does not occur when it is attached to an object, it is possible to contribute to environmental conservation and resource saving. Further, since precise positioning and the like are not required in the step of providing the adhesive layer on the base material, it can be manufactured extremely easily. Moreover, since the unevenness is formed on the surface of the pressure-sensitive adhesive layer, the contact surface area between the adhesive layers that are temporarily laminated is small, and even if the adhesive layers are temporarily attached. These adhesive layers will not be integrated with each other or blocking will not occur.
In addition, since the uneven surface is provided on the surface during use, the two tile carpets can be easily separated with a slight load. In the laminated tile carpet according to claim 2, since the height difference between the concave portion and the convex portion in the uneven portion on the surface of the pressure-sensitive adhesive layer is 5 to 300 μm, the adhesive layers of the two tile carpets are bonded to each other. However, its separability is good, and even after it is adhered to the adherend, unevenness does not cause stepped parts, and the end of the adhered carpet may be lifted up. Absent.

[0009]

The structure of a laminated tile carpet according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a vertical sectional view showing an embodiment of the laminated tile carpet of the present invention.
FIG. 2 is a cross-sectional view of the tile-pet. As shown, this laminated tile carpet 1 comprises two tile carpets 10 each having a pressure sensitive adhesive layer 3 provided on one surface of a substrate 2.
It is composed of These two tile carpets 10 are
The respective pressure-sensitive adhesive layers 3 are stuck together and temporarily laminated.

As the base material 2, any of known natural fibers and synthetic fibers used in ordinary tile carpets, or blended fibers thereof can be suitably used without any particular limitation. Further, these natural fibers and synthetic fibers may be coated with a synthetic resin such as vinyl chloride resin and polypropylene resin as a backing material, and are not particularly limited. Further, the shape and size of the base material 2 are not particularly limited. The thickness of the base material 2 is also not particularly limited, but in the light of actual use conditions, specifically, 1
The thickness is preferably in the range of about 10 mm.

A pressure sensitive adhesive layer 3 is provided on one surface of the base material 2, more specifically on the back surface of the base material 2. The coating thickness of the pressure-sensitive adhesive layer 3 is not particularly limited, but 1
The range of about 0 to 300 μm is preferable in terms of reseparability, re-adhesion, and the like. That is, if the coating thickness of the pressure-sensitive adhesive layer 3 is less than 10 μm, the re-adhesive force is not sufficiently expressed, while if the coating thickness exceeds 300 μm, the re-separation property deteriorates, which is not preferable in any case.

Furthermore, the laminated tile carpet 1 of the present invention
Then, the adhesive used in the pressure-sensitive adhesive layer 3 has sufficient adhesive force to fix the carpet on the adherend surface, and the two tile carpets 10
Any adhesive having an adhesive strength such that the tile carpets 10 can be easily separated even after the adhesive layers 3 are bonded together is preferably used. Specifically, a solvent solution type or water dispersion type acrylic adhesive is preferably used from the viewpoint of weather resistance and the like. More specifically, for example, a cross-linking type adhesive composition composed of an acrylate-based polymer such as ethyl acrylate, methyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, nonyl acrylate, lauryl acrylate, etc. It is preferably used, but is not particularly limited.

The pressure-sensitive adhesive layer 3 is formed by applying the above-mentioned adhesive to one surface of the substrate 2. The coating method is not particularly limited, for example flexographic printing, gravure printing,
A known coating method such as silk screen printing is suitably used without any particular limitation. Further, the pressure-sensitive adhesive layer 3 may be provided on the entire one surface of the base material 2 or may be provided on a part of the one surface of the base material 2 which is arbitrarily set, and is not particularly limited.

An uneven portion 31 is formed on the surface of the pressure sensitive adhesive layer 3 as described above. In the illustrated embodiment, the concavo-convex portion 31 is formed in a wavy shape, but the present invention is not particularly limited, and the concave portion 31a and the convex portion 31b are formed on the surface.
Any shape may be used as long as undulations are formed. Further, the uneven portion 31 is, as in the illustrated embodiment,
Even if the same shape is not regularly provided on the entire surface, different shapes may be irregularly provided on the entire surface. That is, two tile carpets 1
It is sufficient that the uneven portion 31 is provided so that the contact surface area of the pressure-sensitive adhesive layers 3 and 3 of 0 and 10 becomes small when the pressure-sensitive adhesive layers 3 and 3 are temporarily attached, and the shape and the like are not particularly limited. Further, as the uneven portion 31, the concave portion 31a
It is desirable that the height difference between the convex portion 31b and the convex portion 31b is 5 to 300 μm, and more preferably 10 to 100 μm. The reason for this is that if the height difference between the concave portion 31a and the convex portion 31b is less than 5 μm, the separability between the tile carpets 10 deteriorates, and if the height difference exceeds 300 μm, the uneven portion when attached to an adherend. This is because the step of 31 is not absorbed, a step is generated on the surface, and a floating phenomenon occurs at the end of the carpet 10, which is not preferable in any case.

Here, the uneven portion 3 is formed on the surface of the pressure-sensitive adhesive layer 3.
As a method for forming 1, a pressure-sensitive adhesive is used as the base material 2.
An example of a method of forming unevenness on the surface by making the coating amount non-uniform at the time of coating is possible. Further, as shown in the embodiment of FIG. 3, the uneven portion 21 may be formed on the surface of the base material 2 and the pressure sensitive adhesive may be applied on the upper surface thereof, and there is no particular limitation.

As described above, the two tile carpets 10 and 10 provided with the pressure sensitive adhesive layer 3 having the irregularities 31 on the surface by applying the adhesive on one surface of the base material 2 and drying it.
The pressure-sensitive adhesive layers 3 are attached to each other and temporarily attached to form a laminated tile carpet 1. The adhesive forming the pressure-sensitive adhesive layer 3 is such that the tile carpets 10 can be easily separated even after the adhesive layers 3 of the two tile carpets 10 are bonded to each other. Since a pressure sensitive adhesive layer 3 is provided with an uneven portion 31 on the surface thereof, a contact portion where the adhesive layers 3 and 3 are temporarily adhered to each other is used. The surface area of the adhesive layer 3 is small, and the adhesive layers 3 and 3 are not integrated with each other and blocking does not occur. Moreover, when fixing to the adherend, if these two tile carpets 10 that have been temporarily adhered are separated from their corners, they can be separated by a slight load due to the uneven portion 31 provided on the surface, and after separation. No paper scraps such as release paper will occur.

[0017]

EXAMPLES The effects of the laminated tile carpet according to the present invention will be described in detail below with reference to examples. However, the present invention is not limited to the following examples.

(Example 1) A pressure-sensitive adhesive having a coating thickness of 50 μm obtained by coating an acrylic pressure-sensitive adhesive on the back surface of a substrate (thickness 10 mm) whose surface is made of nylon tuftet and drying it. Layers were formed. The acrylic pressure-sensitive adhesive was applied again to the surface of this pressure-sensitive adhesive layer in stripes at 2 cm intervals and dried to form a convex portion having a coating thickness of 80 μm and a concave portion having a coating thickness of 50 μm. To form a tile carpet. Two such tile carpets were produced, and the pressure-sensitive adhesive layers were adhered to each other and pressure-bonded to each other to obtain a laminated tile carpet of Example 1. (Example 2) An acrylic pressure-sensitive adhesive was applied by screen coating to the back surface of a base material (10 mm thick) whose surface was made of nylon tufted. At this time, the screen pattern is formed in a grid pattern, and the pressure-sensitive adhesive applied in a grid pattern is dried in a state in which it is made to flow from the non-disregarded portion of the pattern to the calibrated portion. A tile carpet having an uneven portion formed by a pressure-sensitive adhesive layer having a thickness of 30 μm and a pressure-sensitive adhesive layer having a thickness of 10 μm. Two such tile carpets were produced, and the pressure-sensitive adhesive layers were attached to each other and pressure-bonded to each other to obtain a laminated tile carpet of Example 2.

(Example 3) A pressure-sensitive adhesive layer having a thickness of 20 μm was obtained by applying an acrylic pressure-sensitive adhesive to the back surface of a base material (thickness: 10 mm) formed of nylon tuftet and drying it. A tile carpet provided with was obtained. In addition, an acrylic pressure-sensitive adhesive was separately applied and dried to obtain a pressure-sensitive adhesive layer having a thickness of 120 μm.
This pressure-sensitive adhesive layer was cut into 5 mm square pieces, and this was optionally bonded to the tile carpet to obtain a tile carpet having a pressure-sensitive adhesive layer having irregularities of 120 μm and 20 μm formed. Two such tile carpets were prepared in the same manner, and the pressure-sensitive adhesive layers were attached to each other and pressure-bonded to each other to obtain a laminated tile carpet of Example 3.

(Comparative Example 1) An acrylic pressure-sensitive adhesive was applied to the back surface of a substrate (thickness: 10 mm) whose surface was made of nylon tuftet, and dried to obtain a 50 μm pressure-sensitive adhesive layer. 2 cm again on the surface of this pressure sensitive adhesive layer
An acrylic pressure-sensitive adhesive was applied in stripes at intervals and dried to obtain a tile carpet having a pressure-sensitive adhesive layer in which irregularities having an overall thickness of 53 μm and 50 μm were formed. I made two pieces of tile carpet like this,
Each pressure sensitive adhesive layer is pasted together and crimped,
The laminated tile carpet of Comparative Example 1 was used.

(Comparative Example 2) An acrylic pressure-sensitive adhesive was applied to the back surface of a substrate (thickness 10 mm) having a surface made of nylon tufted and dried to obtain a 50 μm pressure-sensitive adhesive layer. 2 cm again on the surface of the pressure sensitive adhesive layer
An acrylic pressure-sensitive adhesive was applied in stripes at intervals and dried to prepare a tile carpet having a pressure-sensitive adhesive layer having irregularities with an overall thickness of 400 μm and 50 μm. Two such tile carpets were prepared in the same manner, and the pressure-sensitive adhesive layers were attached to each other and pressure-bonded to obtain a laminated tile carpet of Comparative Example 2.

[0022]

[Test Example] The laminated tile carpets obtained in the above Examples and Comparative Examples were tested for peeling separation performance, adhesiveness to an adherend, and floating of the edge after adhesion. In addition, each item is tested by a sensory test by a panelist, and the peeling separation performance and adhesion to the adherend are good, ◯, normal are △, bad are X, and adhesion Regarding the floating of the rear edge, those that were not recognized at all were evaluated as ◯, those that were slightly recognized were evaluated as Δ, and those that were clearly recognized were evaluated as ×. Table 1 shows the results.

[0023]

[Table 1]

As is clear from the results shown in Table 1, those in which the height difference of the irregularities on the surface of the pressure-sensitive adhesive layer is in the range of 5 to 300 μm (Examples 1 to 3) are the peeling separation property and the adhesion to the adherend. It can be seen that the adhesiveness is good. Regarding the floating of the end portion after adhesion, there is a tendency that it is slightly recognized when the height difference of the uneven portion is 100 μm (Example 3), but it is completely recognized at 30 μm (Example 1) and 20 μm (Example 2). I know there isn't. On the other hand, when the height difference of the irregularities on the surface of the pressure-sensitive adhesive layer is 3 μm (Comparative Example 1), the peeling separation performance is poor,
It can be seen that when the height difference exceeds 100 μm (Comparative Example 2), the floating of the end portion after adhesion is clearly recognized.

[0025]

As described in detail above, the invention of claim 1 is a two-piece tile carpet in which a pressure-sensitive adhesive layer is provided on one surface of a base material, and these tile carpets have an adhesive layer of each other. Since the laminated tile carpet is characterized in that the adhesive layer is formed by laminating and temporarily adhering each other and unevenness is formed on the surface of the adhesive layer, paper scraps due to release paper are generated during use. Without
It is possible to conserve the environment and save resources, and moreover, precise positioning and coating accuracy are not required at the time of coating the adhesive layer, and it is possible to easily manufacture the two tile carpets. Even if the adhesive surfaces are pasted together and temporarily attached, the contact area between them is reduced due to the uneven portions provided on the surface, so there is no blocking or the like in the mutual adhesive layers, and it is easy to use. A laminated tile that can be separated into two tile carpets and is suitable for use as an interior material or floor material in office buildings, aircraft, ships, etc., with excellent manufacturability, usability, environmental conservation, etc. It has the excellent effect of being a carpet. The invention of claim 2 is the laminated tile carpet according to claim 1, characterized in that the height difference between the concave portion and the convex portion in the concave-convex portion is 5 to 300 μm. Even if the layers are stuck together, their separability is good, and even after sticking to the adherend, there is no step due to the uneven portion,
Further, it has an excellent effect that the edge of the carpet is not lifted up.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a laminated tile carpet of the present invention.

FIG. 2 is a cross-sectional view of the above embodiment.

FIG. 3 is a cross-sectional view showing another embodiment of the laminated tile carpet of the present invention.

FIG. 4 is a cross-sectional view showing an example of a conventional pressure-sensitive adhesive sheet laminate.

FIG. 5 is an explanatory diagram showing another example of a conventional pressure-sensitive adhesive sheet laminate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Laminated tile carpet 2 Base material 3 Pressure-sensitive adhesive layer 31 Concavo-convex part 31a Recessed part 31b Convex part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noboru Fujiwara 1-2-1, Shimohozumi, Ibaraki City, Osaka Prefecture Nitto Denko Corporation

Claims (2)

[Claims] 1. A two-piece tile carpet having a pressure-sensitive adhesive layer provided on one surface of a base material, wherein the tile carpets are formed by laminating the adhesive layers to each other and temporarily adhering them together. A laminated tile carpet characterized in that irregularities are formed on the surface of the adhesive layer. 2. The laminated tile carpet according to claim 1, wherein the height difference between the concave portion and the convex portion of the uneven portion is 5 to 300 μm.