JPH08266390A - Laminated tile carpet - Google Patents

Abstract

PURPOSE: To provide a laminated tile carpet capable of protecting the environment and saving resources, simple to manufacture, capable of easily separating two tile carpets for use, and capable of exerting sufficient adhesiveness to a polypropylene raw material generally used as the material of a floor material recently. CONSTITUTION: A pressure-sensitive adhesive layer 3 is formed on one face of a base material 2 to form a tile carpet 10, and the adhesive layers 3, 3 of two tile carpets 10, 10 are stuck together to form a temporarily laminated tile carpet. The pressure-sensitive adhesive layer 3 is constituted of the first pressure-sensitive adhesive layer 31 formed into a continuous uniform layer and the discontinuous second pressure-sensitive adhesive layers 32 formed on the first pressure-sensitive adhesive layer 31.

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 the production of paper scraps such as release paper, to conserve the environment and to save resources, and to simplify the production and to use a polypropylene material. The present invention provides a laminated tile carpet that exhibits good adhesiveness to, and can be suitably used as an interior material / floor material for offices, buildings, aircrafts, ships and the like.

[0002]

2. Description of the Related Art Generally, a pressure sensitive adhesive does not require water or a solvent as compared with other solvent type adhesives, and adheres to a predetermined adherend surface with extremely weak pressure such as light finger pressure. It has an excellent advantage that it does not stain the adherend surface 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. As an example of using such a pressure sensitive adhesive at home, there is fixing of carpets. As a household fixed carpet, for example, a tile carpet (a) with an adhesive as shown in FIG. 6 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 temporarily attached via release paper (d). When used, each tile carpet (a
-1) was separated from the release paper (d) and fixed to the adherend.

However, in the tile carpet (a) with an adhesive as shown in FIG. 6, 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 deal with the current situation in which aging is becoming a problem. Therefore, as a pressure-sensitive adhesive sheet that can contribute to the environmental conservation problem, "double pressure-sensitive adhesive sheet" is disclosed in Japanese Patent Laid-Open No. 5-64858.
Is disclosed. In this disclosed technology, as shown in the structure in FIG. 7, two pressure-sensitive adhesive sheets each having a pressure-sensitive adhesive coating portion (n) and a release agent coating portion (r) on the back surface of the sheet (s) are bonded to each other. It was a double pressure-sensitive adhesive sheet that was adhered so that the agent-coated portions (n) did not overlap each other. This "double adhesive sheet" was an excellent technology that was able to meet the demands of the times such as environmental protection and resource saving without the generation of paper scraps due to release paper during use.

[0004]

However, in the above-mentioned "double pressure-sensitive adhesive sheet", the work of positioning the pressure-sensitive adhesive coated portions (n) of the pressure-sensitive adhesive sheet so as not to overlap each other is complicated, and the pressure-sensitive adhesive layer is formed into a sheet. There is a problem that it takes a lot of time and effort to manufacture the pressure-sensitive adhesive sheet, for example, in the case of applying it to one side of the sheet, precise application accuracy is required. Further, in the disclosed technique, the pressure-sensitive adhesive-coated portion (n) is partially provided on one surface of the sheet (s), so that the pressure-sensitive adhesive-coated portion (n) required for fixing to the adherend is not covered. There is a problem that the area becomes considerably smaller than the adherend area, and the adhesiveness to the adherend is poor. In addition, since the pressure-sensitive adhesive-coated portion (n) is partially provided in a checkered pattern, the adhesive force becomes extremely weak at the end of the pressure-sensitive adhesive sheet (s), and after being fixed to the adherend, the pressure-sensitive adhesive sheet ( s) may be lifted from the edge, or depending on the sheet, there may be a step between the part where the adhesive is provided and the part where the adhesive is not provided after attachment, and attachment is fixed. There was also a problem of impairing the aesthetic appearance of the seat surface later.

Further, in recent years, polypropylene materials have come to be used for the adherend (floor surface, etc.) on which the above-mentioned double adhesive sheet is applied from the viewpoint of environment and the like. Generally, an acrylic pressure-sensitive adhesive is often used for the pressure-sensitive adhesive sheet, but there is a problem that the acrylic pressure-sensitive adhesive does not have sufficient adhesiveness to the polypropylene material. On the other hand, when a rubber-based pressure-sensitive adhesive having high adhesiveness to the surface of a plastic material such as polypropylene is used, there is a problem that the two pressure-sensitive adhesive sheets cannot be easily separated when the pressure-sensitive adhesives are bonded together.

In view of this, the present invention does not produce paper scraps such as release paper during use, can conserve the environment and conserve resources, and does not require precise positioning or coating accuracy, and is simple to manufacture. In addition, even if two tile carpets are attached to each other with their pressure-sensitive adhesive surfaces and temporarily adhered to each other, blocking does not occur in the mutual pressure-sensitive adhesive layers, and two tile carpets can be easily used at the time of use. The tile carpet can be separated, and in addition, it can exhibit sufficient adhesiveness to polypropylene materials, which have been widely used as flooring materials in recent years, and are excellent in environmental protection, manufacturability, and usability. The purpose is to provide a laminated tile carpet.

[0007]

SUMMARY OF THE INVENTION 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. A plurality of tile carpets, wherein the tile carpets are formed by laminating and temporarily adhering pressure-sensitive adhesive layers to each other, and the pressure-sensitive adhesive layer is formed into a continuous layered first pressure-sensitive adhesive layer. The adhesive layer and the discontinuous second pressure-sensitive adhesive layer provided on the first pressure-sensitive adhesive layer are included.
In the laminated tile carpet of claim 2, the first pressure-sensitive adhesive layer is made of an acrylic adhesive, and the second pressure-sensitive adhesive layer is made of a rubber adhesive. According to another aspect of the laminated tile carpet of the present invention, the first pressure-sensitive adhesive layer is made of a rubber adhesive and the second pressure-sensitive adhesive layer is made of an acrylic adhesive. In the laminated tile carpet according to claim 4, the pressure-sensitive adhesive layer has an adhesive force capable of separating the adhesive layers of the two tile carpets in a state where the adhesive layers are adhered to each other.

[0008]

In the laminated tile carpet according to claim 1, since the pressure-sensitive adhesive layers of two tile carpets are laminated and temporarily laminated, no paper scraps such as release paper are generated during use, and the environment is improved. Conservation and resource saving can be achieved. Moreover, precise positioning and coating accuracy are not required in the step of providing the pressure-sensitive adhesive layer on the base material, and the manufacture can be simplified. The laminated tile carpet according to claim 2 or 3, wherein the first pressure-sensitive adhesive layer is formed of an acrylic pressure-sensitive adhesive and the second pressure-sensitive adhesive layer is formed of a rubber-based pressure-sensitive adhesive. Alternatively, since the first pressure-sensitive adhesive layer is formed of a rubber pressure-sensitive adhesive and the second pressure-sensitive adhesive layer is formed of an acrylic pressure-sensitive adhesive, floor materials, etc. While capable of exhibiting sufficient adhesiveness to a polypropylene material that is widely used for, even if the pressure-sensitive adhesive layers of two tile carpets are stuck together, blocking does not occur in these pressure-sensitive adhesive layers, It can be easily separated. In the laminated tile carpet according to claim 4, since the adhesive force of the pressure-sensitive adhesive layer is an adhesive force capable of separating the adhesive layers of the two tile carpets in a state in which the adhesive layers are adhered to each other, the adhesive layers are Even if they are stuck together, the mutual adhesive layers do not cause blocking or the like, and the two tile carpets can be easily separated during use. Therefore, it is excellent in environmental protection, manufacturability and usability.

[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 showing an example of a tile carpet that constitutes a laminated tile carpet. As shown in the figure, the laminated tile carpet 1 of the present invention comprises two tile carpets 1 each having a pressure sensitive adhesive layer 3 provided on one surface of a substrate 2.
It consists of zero. These two tile carpets 10
The pressure-sensitive adhesive layers 3, 3 are laminated and temporarily adhered to each other.

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 or polypropylene resin as a backing material, and there is no particular limitation. 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 light of the actual use conditions, specifically, 1 to
The thickness is preferably in the range of about 20 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. In the present invention, the pressure-sensitive adhesive layer 3 includes a continuous layered first pressure-sensitive adhesive layer 31 formed on the surface of the base material, and a discontinuous layer formed on the upper surface of the first pressure-sensitive adhesive layer 31. It is composed of the second pressure-sensitive adhesive layer 32. The coating thickness of the pressure-sensitive adhesive layer 3 is not particularly limited, but is 10 to 1 for both the first pressure-sensitive adhesive layer 31 and the second pressure-sensitive adhesive layer 32.
It is desirable to set it in the range of about 00 μm. Further, the pressure-sensitive adhesive layer 3 has an adhesive force capable of separating the pressure-sensitive adhesive layers 3 and 3 of the two tile carpets 10 and 10 from each other. . The reason is that if the tile carpets 10 and 10 cannot be separated after the pressure-sensitive adhesive layers 3 and 3 of the two tile carpets 10 and 10 are bonded together, the release paper which is the object of the present invention This is because it is not possible to make a tile carpet suitable for environmental conservation that does not require

Further, in the present invention, the discontinuous second pressure-sensitive adhesive layer 32 may have a dot shape as shown in the plan view of FIG. 3 or the shape of the discontinuous second pressure sensitive adhesive layer 32 as shown in the plan view of FIG. It may be a striped shape as shown in FIG. 2 or may be a grid shape, which is not shown. Further, in addition to those regularly provided as shown in the drawing, it may be irregularly dot-shaped or stripe-shaped at appropriate places. It may be configured to be provided and is not particularly limited.

Further, in the present invention, it is preferable that the first pressure-sensitive adhesive layer 31 and the second pressure-sensitive adhesive layer 32 are composed of different pressure-sensitive adhesives. Specifically, for example, the first pressure-sensitive adhesive layer 31 is formed of an acrylic pressure-sensitive adhesive and the second pressure-sensitive adhesive layer 32 is formed of a rubber-based pressure-sensitive adhesive. Is preferred. Alternatively, the first pressure-sensitive adhesive layer 31 may be formed of a rubber-based pressure-sensitive adhesive and the second pressure-sensitive adhesive layer 32 may be formed of an acrylic-based pressure-sensitive adhesive.
As the acrylic pressure-sensitive adhesive, specifically, an adhesive containing 50% or more of an acrylic acid monomer having 2 to 14 carbon atoms such as methyl acrylate, ethyl acrylate, and butyl acrylate is more preferable. Can be used. Further, if necessary, a tackifier, a softening agent, an antioxidant, a filler, a cross-linking agent, a pigment and the like may be contained. On the other hand, the rubber-based pressure-sensitive adhesive contains natural rubber and synthetic rubber as main components, and contains tackifiers, softeners, antioxidants, fillers, cross-linking agents, pigments and the like as necessary. Any rubber pressure sensitive adhesive can be used.

Thus, especially the first pressure-sensitive adhesive layer 31
Is formed of an acrylic pressure-sensitive adhesive, the second pressure-sensitive adhesive layer 32 is formed of a rubber-based pressure-sensitive adhesive, or the first pressure-sensitive adhesive layer 31 is formed of a rubber-based pressure-sensitive adhesive. By forming the second pressure-sensitive adhesive layer 32 from an acrylic pressure-sensitive adhesive, and by forming the second pressure-sensitive adhesive layer 32 from an acrylic pressure-sensitive adhesive, sufficient adhesiveness to a polypropylene material that has been widely used for flooring materials in recent years can be exhibited. At the same time, even if the pressure-sensitive adhesive layers 3, 3 of the two tile carpets 10, 10 are stuck together, blocking does not occur in these adhesive layers, and they can be easily separated.

The method of applying the pressure-sensitive adhesive layer 3 to the base material 2 is not particularly limited, and for example, a roll coater,
Any known coating method such as silk screen printing or flexographic printing can be suitably used. Further, when the second pressure-sensitive adhesive layer 32 is applied, the two tile carpets 10 may be applied at the same position so as to face each other when the two tile carpets 10 are adhered to each other. In order to further improve the structure, the pressure-sensitive adhesive layers 3, 3 facing each other may be slightly displaced from each other as shown in FIG.

[0016]

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

(Example 1) A rubber pressure-sensitive adhesive was applied to the back surface of a tile carpet base material whose front surface was made of nylon tufted and whose back surface was made of polypropylene material, and dried to obtain a 50 μm thick first The pressure sensitive adhesive layer of was formed. Acrylic pressure-sensitive adhesive is applied to the surface of the first pressure-sensitive adhesive layer in stripes at intervals of 4 cm and dried,
Total thickness of 70 μm combined with the first pressure-sensitive adhesive layer
The second pressure-sensitive adhesive layer was provided so as to obtain a tile carpet. Similarly, another tile carpet was prepared, and the pressure-sensitive adhesive layers of these two tile carpets were stuck together and pressure-bonded to each other to obtain the laminated tile carpet of Example 1. (Example 2) The surface is formed of nylon tufted,
An acrylic pressure-sensitive adhesive was applied to the back surface of a tile carpet base material whose back surface was formed of a vinyl chloride material and dried to form a first pressure-sensitive adhesive layer having a thickness of 20 μm. A rubber-based pressure-sensitive adhesive is applied to the surface of the first pressure-sensitive adhesive layer in a grid shape of 5 cm on each side and dried to give a total thickness of 70 μm including the first pressure-sensitive adhesive layer. A second pressure-sensitive adhesive layer was provided so that a tile carpet was produced. Similarly, another tile carpet was prepared, and the pressure-sensitive adhesive layers of these two tile carpets were bonded and pressure-bonded to each other to obtain a laminated tile carpet of Example 2. (Example 3) The surface is formed of nylon tufted,
Apply a rubber pressure-sensitive adhesive to the back side of the tile carpet base material whose back side is made of vinyl chloride material and dry it.
A 20 μm thick first pressure sensitive adhesive layer was formed. The total thickness of the first pressure-sensitive adhesive layer combined with the first pressure-sensitive adhesive layer is obtained by applying an acrylic pressure-sensitive adhesive in a dot shape (distance: 5 cm) having a diameter of 3 cm and drying it. The second pressure-sensitive adhesive layer was provided so that the thickness was 70 μm to produce a tile carpet. Similarly, another tile carpet was prepared, and the pressure-sensitive adhesive layers of these two tile carpets were bonded 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 tile carpet base material whose front surface was made of nylon tufted and whose back surface was made of vinyl chloride material, and dried to give a 50 μm thick film. A pressure-sensitive adhesive layer was formed. Similarly, another tile carpet was prepared, and the pressure-sensitive adhesive layers of these two tile carpets were bonded and pressure-bonded to each other to obtain a laminated tile carpet of Comparative Example 1. (Comparative Example 2) The surface is formed of nylon tufted,
Apply a rubber pressure-sensitive adhesive to the back surface of the tile carpet base material whose back surface is made of vinyl chloride material, and dry it.
A 50 μm pressure sensitive adhesive layer was formed. Similarly, another tile carpet was prepared, and the pressure-sensitive adhesive layers of these two tile carpets were stuck together and pressure-bonded, and Comparative Example 2
Of the laminated tile carpet.

[0018]

[Test Example] With respect to the laminated tile carpets obtained in Examples 1 to 3 and Comparative Examples 1 and 2, respectively, separability,
A sensory test was conducted by a panelist on the item of adhesiveness to the polypropylene plate. In the evaluation, those having good separability were evaluated as ◯, and those having difficulty in separation were evaluated as x. Regarding the adhesiveness to the polypropylene plate, the good one was marked with ◯, and the one that was hardly adhered was marked with x. Table 1 shows the results.

[Table 1]

As is clear from the results shown in Table 1, the laminated tile carpet coated with the acrylic pressure-sensitive adhesive (Comparative Example 1) has poor adhesion to the polypropylene plate and is hardly adhered. Further, it can be seen that in the laminated tile carpet coated with the rubber-based pressure-sensitive adhesive (Comparative Example 2), it becomes difficult to separate the two tile carpets. On the other hand, in the laminated tile carpet of the example in which the first adhesive layer and the second adhesive layer are formed using a rubber-based pressure-sensitive adhesive or an acrylic pressure-sensitive adhesive, It can be seen that the separability is good and the adhesion to the polypropylene plate is also good.

[0020]

As described in detail above, the present invention is a two-piece tile carpet having a pressure-sensitive adhesive layer provided on one surface of a substrate, and these tile carpets have pressure-sensitive adhesive layers that are adjacent to each other. The first and second pressure-sensitive adhesive layers are formed by continuously laminating and temporarily adhering to each other, and the pressure-sensitive adhesive layer is a discontinuous layer formed on the first pressure-sensitive adhesive layer. Since it is a laminated tile carpet characterized by comprising a second pressure-sensitive adhesive layer, paper waste such as release paper does not occur during use, and environmental conservation and resource saving can be achieved. Moreover, there is no need for precise positioning, coating accuracy, etc., and there is an excellent effect that manufacturing can be performed easily. Further, according to the present invention, the first pressure-sensitive adhesive layer is composed of an acrylic adhesive, and the second pressure-sensitive adhesive layer is composed of a rubber-based adhesive. Alternatively, the first pressure-sensitive adhesive layer is composed of a rubber-based adhesive, the second pressure-sensitive adhesive layer is a laminated tile carpet characterized by being composed of an acrylic adhesive, It can develop sufficient adhesiveness to polypropylene materials that are widely used for flooring materials in recent years, and can easily separate two tile carpets, and can be used in offices, buildings, aircraft, ships, etc. It has an excellent effect that it is a laminated tile carpet that can be suitably used as an interior material / floor material. Further, according to the present invention, the adhesive force in the pressure-sensitive adhesive layer is an adhesive force capable of separating the adhesive layers of the two tile carpets in a state where the adhesive layers are adhered to each other. Therefore, even if two tile carpets are pasted with each other's adhesive side and temporarily attached, blocking does not occur in the mutual adhesive layer, and the two tiles can be easily used at the time of use. It has the excellent effect of being a laminated tile carpet excellent in environmental protection, manufacturability, usability, etc., such as the ability to separate the carpet.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing an embodiment of the tile carpet that constitutes the laminated tile carpet of the present invention.

FIG. 3 is a plan view showing another embodiment of the tile carpet.

FIG. 4 is a plan view showing another embodiment of the tile carpet.

FIG. 5 is a vertical sectional view showing another embodiment of the laminated tile carpet according to the present invention.

FIG. 6 is a cross-sectional view showing an example of a conventional laminated tile carpet.

FIG. 7 is an external view showing another example of a conventional laminated tile carpet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Laminated tile carpet 10 Tile carpet 2 Base material 3 Pressure-sensitive adhesive layer 31 First pressure-sensitive adhesive layer 32 Second pressure-sensitive adhesive layer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical display location B32B 27/12 B32B 27/12 27/30 27/30 A (72) Inventor Nobuo Mamiya Ibaraki, Osaka Prefecture 1-2 Hochizumi Shimoichi, Nitto Denko Corporation

Claims (4)

[Claims] 1. A two-piece tile carpet having a pressure-sensitive adhesive layer provided on one surface of a substrate, wherein the tile carpets are laminated and temporarily adhered to each other by bonding the pressure-sensitive adhesive layers to each other. In addition, the pressure-sensitive adhesive layer comprises a first pressure-sensitive adhesive layer formed in a continuous layered form, and a discontinuous second pressure-sensitive adhesive layer provided on the first pressure-sensitive adhesive layer. A laminated tile carpet characterized in that it is made up of: 2. The first pressure-sensitive adhesive layer is made of an acrylic adhesive, and the second pressure-sensitive adhesive layer is made of a rubber adhesive.
The laminated tile carpet according to. 3. The first pressure-sensitive adhesive layer is made of a rubber adhesive, and the second pressure-sensitive adhesive layer is made of an acrylic adhesive.
The laminated tile carpet according to. 4. The adhesive force of the pressure-sensitive adhesive layer is
The laminated tile carpet according to any one of claims 1 to 3, wherein the adhesive strength of the two tile carpets is such that they can be separated in a state where the adhesive layers are stuck together.