JP2003082840A - Floor covering material set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor covering material set with a pressure sensitive adhesive, which facilitates the execution of work, and prevents delamination and warping. SOLUTION: A floor covering material, whose backside has a synthetic resin layer, is constituted in such a manner that the pressure sensitive adhesive is partially provided on the backside thereof. The floor covering material set is constituted in such a manner that the pressure sensitive adhesives are superposed on each other when the backsides of the floor covering materials are superposed on each other so as to face each other. The floor covering material set is characterized in that the pressure sensitive adhesive is partially provided at four corners of the floor covering material and on the backside, except the four corners, of the floor covering material.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a floor finishing material having a synthetic resin layer on the back surface thereof, and a pressure-sensitive adhesive is partially provided on the back surface of the floor finishing material. The present invention relates to a floor finishing material set with an anti-slip agent, which is configured such that the pressure sensitive adhesives overlap each other.

[0002]

2. Description of the Related Art A floor finishing material is known in which an adhesive is partially provided on the back surface of the floor finishing material having a synthetic resin backing material. For example, Japanese Patent Laid-Open No. 6-322937 discloses an interior material for adhesive construction in which a continuous adhesive coating film is formed along the periphery of the back surface. This interior material is a set of two sheets whose back surfaces are overlapped with each other, and they are separated and attached to the floor surface during construction. However, since the pressure-sensitive adhesive is continuously formed on the entire periphery, it is difficult to peel off and the workability is poor.

On the other hand, according to the invention of Japanese Patent No. 2907809, the adhesive is discontinuous along the periphery of the back surface for each one sheet, but when two sheets are stacked, the entire circumference is continuously formed on the back surface. Surroundingly applied tile carpet sets are disclosed. This tile carpet is certainly better than the previous ones in terms of peeling, but the adhesive must be applied to the uncoated parts of each other (the application position is limited to 50% or less). ),
There is an essential drawback that the adhesive is apt to be unevenly distributed. In particular, if the adhesive is unevenly distributed around the periphery, the tile may be warped or peeled off. On the other hand, in Utility Model Registration No. 25688889, on the back surfaces of a pair of tile carpets, adhesives having a mirror image relationship with each other and having the same pattern so as to face each other when the back surfaces are opposed to each other. The layers are scattered, and an adhesive layer is provided at a corner portion on the back surface thereof at a distance from at least one side edge, and the pair of tile carpets are bonded to each other with their back surfaces facing each other. In addition, a combination of tile carpets, which is characterized by being separable from each other, is described, and when used in a workplace, a portion where an adhesive layer is not provided in a corner portion on the back surface of the tile carpet. Pick the
It is explained that the tile carpets attached to each other are peeled off. However, when this tile carpet is installed on the floor and used for a long period of time, warp or peeling is likely to occur at joints, especially at corners due to walking, movement of casters, dimensional change of tile carpet, or the like.

[0004]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a floor finishing material set with an adhesive, which is easy to construct and does not peel off or warp.

[0005]

A first aspect of the present invention is a floor finishing material comprising a back surface of a floor finishing material having a synthetic resin layer on the back surface of which a pressure-sensitive adhesive is partially provided. In the floor finishing material set configured such that the pressure sensitive adhesives are overlapped with each other when the back surfaces of the pressure sensitive adhesives are overlapped with each other, the pressure sensitive adhesive is formed on the four corners of the floor finishing material and on the other back surface. The present invention relates to a floor finishing material set characterized in that the floor finishing material set. A second aspect of the present invention is that the adhesive has a shear adhesive strength of 0.03 N / mm ² or less, 0.01 N / m.
The floor finishing material set according to claim 1, which has a size of m ² or more. A third aspect of the present invention relates to the floor finishing material set according to any one of claims 1 and 2, wherein an application rate of the pressure-sensitive adhesive is 30% or less and 3% or more of a total area of the back surface. Fourth of the present invention
Relates to the floor finishing material set according to any one of claims 1 to 3, wherein the application ratio of the pressure-sensitive adhesive is larger in the peripheral portion of the floor finishing material than in the central portion. 5th of this invention has the said adhesive application part at equal intervals in the peripheral part except the 4 corner parts of the said floor finish, and that space is 25-100 mm.
The floor finishing material set according to any one of claims 1 to 4. A sixth aspect of the present invention is that the distance between the adhesives applied to the peripheral portion and the central portion of the floor finish material is 50 to 250 mm.
At least 1 on at least one of the 4 sides
The floor finishing material set according to any one of claims 1 to 5, wherein the floor finishing material set is provided at a portion and is used as an easily peelable portion.

The most important point in the present invention is that, in a floor finishing material in which a pressure-sensitive adhesive is partially provided, when the back surfaces of the floor finishing material are faced to each other and overlapped, the pressure-sensitive adhesives overlap each other. This is the point to configure. By doing so, a new surface of the pressure-sensitive adhesive can be exposed when they are separated from each other during construction, and a good pressure-sensitive adhesive effect can be exhibited. If the adhesives are applied so that they do not overlap, it becomes difficult for the new surface of the adhesive to appear when separated, and the adhesive effect may become uneven or may not be fully exhibited.

On the other hand, when a floor finish with an adhesive is applied to a floor surface for use, there is a problem that the joint is pushed up or warped due to walking, movement of casters, or dimensional change of the floor finish. Such problems are likely to occur at the corners of the floor finish. Therefore, in the present invention, the above-mentioned problem is solved by providing an adhesive on all four corners of the floor finish material. FIG. 1 shows an embodiment of the present invention. The pressure-sensitive adhesive 2 is partially provided on the corner 3 of the tile-shaped floor finishing material 1 and the other back surface. The adhesive provided in the corners is the distance from the corner along the side (L in the figure).
1) 5 to 30 mm (preferably 10 to 20 mm) is suitable.

The adhesive used in the present invention has a coating amount of 30 g.
/ ^{M 2} shear adhesion indicated that by applying an adhesive in the 0.03 N / mm ² or less, preferably 0.02 N / mm
² or less, it is important to use the ones 0.01 N / mm ² or more. If a shear adhesive strength of 0.03 N / mm ² or more is used, it will be difficult to peel off during construction and workability will be extremely reduced. Moreover, the shear adhesive force is 0.01 N /
If it is less than mm ² , it is not preferable because the joint is likely to be displaced during the construction, and the slope portion or the like may be displaced even after the construction. The test method for shear adhesive strength is according to JIS Z 0237.

The adhesive application rate is 30% of the total area of the back surface.
% Or less, 3% or more, preferably 20% or less, and more preferably 4 to 10%. If it is 30% or more, it is difficult to peel off at the time of construction, the workability is lowered and the cost is increased. There is no particular limitation on the coating pattern on the back surface other than the corners, but it is preferable that the coating pattern is uniform throughout. Especially the diameter is 5
It is preferable to apply the so-called polka dot application pattern of about 20 mm evenly so as to obtain a predetermined area ratio. However, it is preferable to increase the coating ratio in the peripheral portion of the floor finish material within a range where it can be easily peeled off, from the viewpoint of stability of the finish material after construction. According to the research conducted by the present inventors, 80% of the total coating amount is in the range from the edge of the floor finishing material toward the inside to 50 mm.
It is preferred to use ~ 40%. In addition, it is extremely preferable to adjust the pressure-sensitive adhesive applied portion to 30% or less with respect to the entire back surface of the finishing material, because the work can be easily peeled off during the work and the work is less likely to shift after the work (see FIG. 1).

In the peripheral portion of the floor finishing material excluding the four corners,
It is preferable that the pressure-sensitive adhesive applied portions are provided at equal intervals, and the intervals are 25 to 100 mm. When the pressure-sensitive adhesive-coated portions are provided at such intervals, when the floor finishing material is a floor finishing material set in which the pressure-sensitive adhesives overlap each other, when the floor finishing material is separated into two floor finishing materials, It is possible to just insert a finger into the 25-100 mm space where there is no adhesive and to smoothly separate the floor finishing material set, thus ensuring work efficiency. However, if the adhesive is strong, it is unavoidable that it will be difficult to peel off if the interval is narrow, so the interval of the adhesive is wider than the other only in the central part (Fig. 1, L ₂ , 50 to 250 mm).
Then, it is preferable to provide the easy peeling portion 4. The easy peeling portion 4 may be provided on at least one of the four sides, but it is preferably provided on all four sides from the viewpoint of construction efficiency. The easy peeling portion 4 goes from the edge to the center (L ₃ in the figure)
20 to 70 mm is suitable. The four corners cannot be made the same as the other parts because the conditions are different from the other surrounding parts, but there is no effect on the separation of the floor finishing material set, so there is no deviation after construction. There is no particular problem as long as the adhesive is present.

As the synthetic resin layer present on the back surface of the floor finishing material of the present invention, a resin composition comprising polyvinyl chloride, polyolefin, ethylene-vinyl acetate copolymer and the like can be used. Further, as the floor finishing material, carpet tiles, resin floor finishing materials and the like are suitable. Of course, in the case of a floor covering made of synthetic resin on both the front surface and the back surface, it is not necessary to newly provide the synthetic resin layer on the entire back surface.

The pressure-sensitive adhesive is not particularly limited except that it is water-based, solvent-based, ultraviolet-ray or electron-beam curable type or hot-melt type pressure-sensitive adhesive except conditions for shearing adhesive strength.
Latexes such as R and NBR, emulsions such as vinyl acetate resin, ethylene-vinyl acetate copolymer and acrylic resin can be used. Further, a polymer for the pressure-sensitive adhesive or a type in which a copolymer is crosslinked, a polymerizable monomer and a crosslinkable monomer are polymerized, and a type in which they are crosslinked can also be used, Specific examples thereof include urethane-based, acrylic-based, and styrene-butadiene-based polymers. In the case of a vinyl chloride resin flooring material, vinyl chloride resin can also be used. In this case, a plasticizer, particularly a plasticizer having a relatively large molecular weight, for example, a trimellitic acid ester plasticizer is mixed in a large amount. It is necessary to. In this case, it is preferable to use 100 to 300 parts by weight of the trimellitic acid ester plasticizer with respect to 100 parts by weight of the resin. Particularly preferred adhesives include polyfunctional polyisocyanate compounds and a molecular weight of 500-
The main component is a three-dimensional crosslinked polymer with 8000 poly (oxyalkylene) glycol (wherein alkylene has 2 to 4 carbon atoms). In particular, the polyfunctional polyisocyanate compound is preferably a terminal isocyanate group-containing polyisocyanate obtained by the reaction of a polyol and a polyisocyanate, and the poly (oxyalkylene) glycol is preferably poly (oxypropylene) glycol. (Patent No. 280
No. 8225 [0013] to [0014], JP-A-2000
-248250). In addition, Japanese Patent Application No. 3-112
179 Microfilm [0010] to [0013]
UV-curable antiskids as described can also be used.

[0013]

The present invention will be described below with reference to examples.
The present invention is not limited thereby.

Example 1 A carpet tile (500 × 500 mm) in which a soft vinyl chloride sheet lining material (thickness 2 mm) was laminated on the back surface of a tufted carpet raw material (thickness 3.5 mm) except for the corners of the lining material Shear adhesive strength of 0.02 N / mm ² on the back side
The acrylic emulsion pressure-sensitive adhesive of 1 was applied as shown in FIG. 1 so that the pressure-sensitive adhesives were overlapped with each other when the back surfaces were matched with each other in a dot shape (denoted by reference numeral 2 in FIGS. 1 and 3) having a diameter of 10 mm. Furthermore, L ₁ = 30 mm was applied to the four corners, and the easy peeling portion 4 (L ₂ = 150) was applied to the central portion.
mm, L ₃ = 30 mm) was formed. 2 to 3 are for explaining FIG. 1 in detail, and are referred to as 500 × in FIG.
When the tile of 500 mm is divided into 50 × 50 mm and considered, the divided portions (a-1) to (a-4),
The exact arrangement of the pressure-sensitive adhesive at the positions of (b-1) to (b-4) and (c) is (a-1) to (a-4) and (b-
1) to (b-4) and (c). As a result, the number of circular adhesive-coated portions 2 was 50 mm in the peripheral portion.
There were 68 in the width region and 62 in the other regions. The area ratio of the adhesive coated part to the whole back surface is

[Equation 1] {(0.7854 × 130 + 4.5 × 4) ÷
(50 × 50)} × 100 = 4.80%. 60 pieces of this carpet tile
After being left for a day, they were peeled off from each other and applied to the floor surface.
This floor finishing material set has a minimum distance of 25 mm where no adhesive is applied in the peripheral portion, and has an easy peeling portion 4 into which a finger can be easily inserted, so that the floor finishing material set can be easily separated and this 50 cm
The shear adhesive strength per square tile is

(2) (78.54 × 130 + 450 × 4) × 0.0
2 = 240 N, and good anti-slip performance was obtained without peeling or warping after construction. On the other hand, as a comparative example, a floor finish set was manufactured in the same manner as in Example 1 using a non-slip agent having a shear adhesive strength of 0.06 N / mm ² . However, this product had too much adhesive force, and it was not easy to separate the set even when a finger was inserted, and the work efficiency was significantly reduced.

[0015]

EFFECTS OF THE INVENTION (1) According to the present invention, it is possible to obtain a floor finishing material set which can be easily separated and has sufficient anti-slip performance. (2) A release paper or the like is unnecessary, no industrial waste is generated, and a floor finishing material set that is favorable in terms of cost and environment can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view showing a distribution state of a pressure-sensitive adhesive applied in dots on a back surface of a floor finish material in Example 1.

FIG. 2 shows a tiled state for explaining the arrangement of the adhesive of FIG. 1 by dividing the tile into small pieces and explaining the tiles accordingly.

FIG. 3 shows each subdivision part (a-1) to (a-4), (b-
1) to (b-4) and (c), the precise arrangement of the adhesive is shown in (a-1) to (a-4) and (b-1) to (a-1) of FIG.
Shown as (b-4) and (c).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Floor finishing material 2 Adhesive 3 Corner 4 Easy peeling part L ₁ Distance along the side from the corner of the adhesive provided in the corner L ₂ Distance between the central adhesives L ₃ Edge of the easy peeling part Distance from the center to

Continued front page    (72) Inventor Katsunori Nagata             1-25-1 Miyagi, Adachi-ku, Tokyo Okayama Ta             Inside Zima Corporation

Claims (6)

[Claims] 1. A floor finishing material comprising a back surface of a floor finishing material having a synthetic resin layer on the back surface thereof and an adhesive agent partially provided on the back surface thereof.
In a floor finishing material set configured such that the pressure sensitive adhesives are overlapped with each other when the back surfaces of the floor finishing material are overlapped with each other, the pressure sensitive adhesive includes four corners of the floor finishing material and other parts. A floor finishing material set that is partially provided on the back surface of. 2. The shear adhesive strength of the adhesive is 0.03 N.
/ Mm ² or less, 0.01 N / mm ² or more, The floor finishing material set according to claim 1. 3. The floor finishing material set according to claim 1, wherein the application rate of the pressure-sensitive adhesive is 30% or less and 3% or more of the entire back surface area. 4. The application ratio of the pressure-sensitive adhesive is set such that the peripheral portion of the floor finishing material is larger than the central portion thereof.
~ The floor finishing material set according to any one of 3 above. 5. The floor finish according to any one of claims 1 to 4, wherein the pressure-sensitive adhesive application portions are provided at equal intervals in a peripheral portion of the floor finish material excluding four corner portions, and the spacing is 25 to 100 mm. Wood set. 6. At least one of the four sides is provided at least at one of the four sides in the peripheral portion of the floor finishing material and in the central portion thereof, and the distance between the adhesives is 50 to 250 mm. The peeling portion is used as a peeling portion.
5. Floor finishing material set according to any one of 5.