JPH04119844A - Simple fastening tile carpet - Google Patents

Abstract

PURPOSE:To impart simple fastening and re-releasable function by successively laminating a fiber surface layer constituted of a fiber material, a non-foamed resin layer, a bulky elastic layer and a foamed synthetic resin layer having viscoelasticity from above to form a simple fastening tile carpet. CONSTITUTION:A fiber surface layer constituted of a fiber material, a non- foamed resin layer, a bulky elastic layer and a foamed synthetic resin layer having viscoelasticity are successively laminated from above to be mutually bonded and, in the relation between the wt. B1 of the non-foamed resin layer, the wt. C1 of the bulky elastic layer and the wt. D1 of the foamed synthetic resin layer having viscoelasticity, B1/C1>=1.0 and B1+C1+D1=0.9-3.0kg/m<2> are satisfied to form a simple fastening tile carpet. The fiber surface layer is composed of a fiber material and there is no special limit in the formation or shape thereof and there are a knitted fabric, a fabric and nonwoven fabric. The non- foamed resin layer is constituted of a resin or rubber generating no permanent deformation such as polyvinyl chloride.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an easily fixed carpet tile that can be easily fixed and removable without using an adhesive.
This invention relates to a simple fastening tile carpet that is easy to install and has excellent resistance to settling and fastening.

[Prior Art] Carpet tiles are well known as rugs that are cut into predetermined sizes in various shapes and laid side by side on the floor. That is, for example, square, rectangular, diamond-shaped carpet tiles have come to be used. This kind of tile carpet requires transportation, loading,
It has recently come into widespread use because it is easy to install, can be locally replaced, and can be combined with tiles of various colors to form a desired pattern.

Such conventional tile carpets consist of a fiber surface layer made of fiber material and a backing layer provided on the back surface. It is attached to the surface, or it is attached to the floor using adhesive. Further, the above tile carpet has the advantage that the backing layer is easily deformed at room temperature, and can be deformed along the floor surface to fit the floor surface.

However, the fluidity of conventional carpet tiles increases with increasing temperature and compressive stress. Therefore, in hot seasons or places, or in places where it is stepped on by many people, the backing layer of conventional tile-like fiber flooring materials fluidizes and deforms, causing problems such as loss of practicality and loss of aesthetics. is occurring.

In addition to the method of fixing carpet tiles to the floor using the above-mentioned adhesive or adhesive, for example, a technique of interposing double-sided tape between the carpet tiles and the floor to attach and fix the carpet tiles is also used. It was getting worse.

[Problem to be solved by the invention] As mentioned above, in conventional tile carpets, adhesives,
It required the use of adhesive or double-sided tape, and could not be installed on existing floors (wooden, linoleum, etc.). That is, it was difficult to remove the laid tile-like fiber flooring material from the floor surface, and in some cases, the floor surface could be damaged. Furthermore, in order to fix the position again, it is necessary to use a new adhesive, adhesive, or double-sided tape, which is inconvenient to use and leads to waste.

Furthermore, in order to reduce the weight of carpets, it is common practice to attach a foam layer to the carpets. Such foam flooring materials are lightweight and have excellent cushioning properties, and have excellent performance as carpets intended only for walking.

However, if the thickness is increased in order to obtain better sound insulation, the foot may feel like it is sinking when walking, and it may also be difficult to place furniture, ornaments, or objects with sharp edges such as high-heeled shoes. It is extremely weak against the load caused by the carpet, causing dent marks and irregular unevenness on the carpet surface, which significantly impairs the aesthetic appearance and makes it unsuitable for use as a carpet.

The purpose of the present invention was to solve the above-mentioned problems, and it is possible to easily attach and remove carpet tiles by repeatedly attaching them to the floor surface without using adhesives, adhesives, double-sided adhesive tape, etc. It has a removable function, and even though it is attached to a foam, it has the same resistance to sagging as a non-foamed resin layer, so it does not flow or deform even if the temperature or compressive stress increases. To provide a stable and easily fixed tile carpet that does not cause any warpage and does not cause "one warp" during practical use.

[Means for Solving the Problems] The easily fastened tile carpet of the present invention has the following configuration in order to solve the above problems. That is, the following layered elements are sequentially laminated from above and bonded to each other: (A) fiber surface layer made of fiber material CB) non-foamed resin layer (C) bulky elastic layer (D) foamed material having viscoelasticity The weight B+ of the non-foamed resin layer having a synthetic resin layer, the bulky elastic layer C1 and the foamed synthetic resin layer D1 having viscoelasticity have the following relationship: B1/C1≧1.0, and Bl +C+ +D+ =0. 9-3. 0kg/r
This is a simple fastening tile carpet characterized by satisfying rI.

In the present invention, the fiber surface layer constituting the tile-like carpet is made of a fiber material, and there are no particular limitations on its formation or shape, and it may be knitted fabric, woven fabric, nonwoven fabric, a composite thereof, or a raised pile fabric. Any of the following is acceptable.

However, raised pile fabrics are generally preferred. The raised pile fabric and base fabric can be made of various fibers and yarns that are normally used in fiber flooring, such as natural fibers, synthetic fibers, and inorganic fibers.

More specifically, as the material for the raised pile fabric and base fabric used in the present invention, synthetic fibers such as nylon, polyester, and polyacrylonitrile, or natural fibers such as wool can be used. The pile yarn may be a filament yarn (including processed yarn) or a spun yarn.

On the other hand, the base fabric may be either a knitted fabric or a nonwoven fabric. Further, materials obtained by raising these base materials may also be mentioned.

The pile yarn is tufted onto a base fabric using, for example, a tuft m/c, and then backing processing is performed with synthetic rubber, synthetic resin, natural rubber, or the like in order to fix the pile yarn. Such tile-like fiber flooring materials include ordinary loop carpets,
Cut pile carpets, flora kink carpets, etc. are common.

In the easily fixed tile carpet of the present invention, a para-kink layer is attached to the back surface of the sheet-like article obtained above before or after it is cut into a desired size.

In the easily fixed tile carpet of the present invention, first, a non-foamed synthetic resin layer is attached. In other words, by providing a non-foamed synthetic resin layer, the fit of the tile carpet to the floor surface is improved, giving the tile carpet appropriate hardness and rigidity, and improving the feeling under foot and resistance to fatigue. .

The non-foamed resin layer is made of resin or rubber that does not undergo permanent deformation. Such resins include polyvinyl chloride (PVC), polyurethane, ethylene-vinyl acetate copolymer, isotactic polypropylene, etc., and rubbers include natural rubber, SBR,
and synthetic rubber such as chlorosulfonated polyethylene rubber. The most preferable resin is P
VC, which may contain plasticizers, fillers, colorants, stabilizers and/or other additives.

By adhering the non-foamed resin layer, it is extremely effective in imparting appropriate deformation resistance, that is, resistance to sagging, hardness, and rigidity to the tile carpet, and improving its ease of laying.

Next, the bulky elastic layer has compression elasticity and rebound elasticity.
It is best to use a material that has little "settling" when compressed, such as foam with micropores, felt made of medium to thick fibers of 5 to 60 deniers, bulky web, cotton wadding, or a combination of these with a binder. A fiber aggregate having bulkiness may be mentioned.

Examples of bulky fiber aggregates include polyester,
Examples include felts and nonwoven fabrics made of synthetic fibers such as polyamide, polypropylene, polyacrylonitrile, polyvinyl chloride, and polyvinylidene chloride, and cellulose fibers such as cotton and rayon. The felts and nonwoven fabrics can be produced by a needle punch method, a stitch pound method, a spunhont method, etc., and it is preferable to use a binder-free method or a binder-less method.

In addition, as the foam having micropores as a bulky elastic layer, for example, rubber sponge-like or foam-like materials, specifically, various synthetic foams such as polyethylene foam, urethane foam, PVC foam, and natural rubber foam, etc. and natural rubber foams, open-celled, closed-celled sponge-like ones, spongy ones, and the like.

In order to further improve the compressive elasticity and rebound resilience of the bulky elastic layer, it is also meaningful to provide a quilting pattern or a plurality of ridges or grooves on at least one surface of the bulky elastic layer. The arrangement pattern of the ridges or grooves may be linear or zigzag. Note that the shape, size, height, and interval of the ridges or grooves may be regular or irregular. To create the ridges or grooves in the elastic layer, for example, thermocompression bonding using a hot roll or hot plate, embossing, adhesive, stitching, or any other appropriate method may be used.

According to the present invention, various types of easily fixed tile carpets are obtained by changing various factors such as the form of the bulky elastic layer, compression characteristics and materials, and factors related to the adhesion of the elastic layer.

By pasting this bulky elastic layer, it gives the easy-fixing tile carpet appropriate deformation resistance, cushioning properties, and sound insulation properties, and also improves its "conformity" to the floor surface and improves the feeling of stepping on it. It is extremely effective.

Next, a foamed synthetic resin layer having viscoelasticity to which a microporous material is attached is preferable because it can easily provide removability for repeated adhesion and peeling.

In other words, by attaching a microporous membrane, the viscoelasticity of the microporous membrane is combined with the suction cup action created by the open micropores that make up the microporous membrane, and the tile carpet is bonded to the floor surface. It can sometimes exhibit an adhesive effect and can prevent the tile carpet from slipping.

As the microporous membrane in the present invention, those made of resin compositions such as polyurethane resins, SBR resins, NBR resins, and silicone resins can be preferably applied.

In addition, the microporous membrane has a dynamic elastic modulus (lo
g 10E') or 9. It is preferable that it is 0 dyne/cnf or less. For resins with better properties,
This is not preferable because the Young's modulus and modulus increase and the material becomes hard.

On the other hand, for microporous membranes, the peak temperature of dynamic loss E'' is -5
0 to -10℃, loss cutting (tan δ) peak value 0.8
It is preferable that it is below. If this value exceeds 0.8 or less, the pore structure of the microporous membrane made using it tends to become dull due to compression, which is not preferable.

On the other hand, the peak temperature of dynamic loss E'' is generally referred to as the glass transition point, and from the viewpoint of low-temperature characteristics, the peak temperature is -50 to
-10°C is preferred. The lower the peak temperature of E", the better, but it has a relationship with heat resistance, and if it is too low, the heat resistance will inevitably decrease, so it is not preferable. On the other hand, if it becomes -10℃ or higher, the low-temperature curing will generally deteriorate. This is not desirable.

Note that the viscoelastic properties in the present invention were measured by the following method.

The sheet-like specimen was
Dynamic modulus of elasticity (log IOE) in the rubber region in the temperature range of -90°C to 200°C by
), loss pressure cutoff (tan δ), and peak temperature of dynamic loss E'' were measured.

Further, the microporous membrane in the present invention has a maximum diameter of 3 to 25 mm.
The microporous membrane preferably has a micropore diameter of 0 microns, preferably 20 to 100 microns, and has many fine pores penetrating from the surface to the back surface of the microporous membrane.

In the present invention, the microporous membrane has relatively large cavities communicating with the small pores inside the membrane, and also has communicating holes in at least a part of the wall that partitions adjacent cavities. Preferably, it has structural characteristics.

Here, the small pores are usually less than 250 microns, for example 100 microns or less.
Preferably, the internal cavity has a diameter of less than 3.8 times the pore diameter, with an average diameter of less than a micron. Further, the shape of the pores is preferably circular, elliptical, rectangular, etc. micropores accounting for 50% or more of the total micropores.

The thinner the microporous membrane is, the more flexibility it has, which is desirable. However, a thickness of 0.1 mm or more is preferably selected from the viewpoint of adhesion to the floor surface. However, if the thickness exceeds 10.5 mm, flexibility and adhesion will be impaired. Further, the open pore area occupying the entire surface of the microporous membrane is preferably 20% or more.

The pores constituting the microporous membrane are circular with a ratio of the major axis to the minor axis l in the range of 1.0 to 3.8, preferably 1.0 to 3°0, and the major axis is less than 180 microns,
Substantially spherical pores, preferably in the range of 10 to 100 microns, are optimal.

In the present invention, it is preferable to apply an adhesive to the microporous membrane. That is, by applying the adhesive, the adhesion between the tile carpet and the floor surface is further increased.

Suitable adhesives include urethane adhesives, rubber adhesives, acrylic adhesives, and rubber-acrylic combination adhesives.

In the tile carpet of the present invention, as described above,
The feature of this is that a non-foamed resin layer and a bulky elastic layer are adhered to each other in sequence.

Compared to a simple adhesive tile carpet in which a bulky elastic layer and a non-foamed resin layer are sequentially laminated and adhesively interposed, which is the reverse order of lamination and binding, a) the carpet does not sink when walked on; By laminating the non-foamed resin layer close to the pile part, the stress concentration is dispersed, there is no local sinking, no unevenness occurs, and it has excellent stability against deformation. It can be made optimal for use in places where it is frequently traveled without causing damage to wear and beauty.

Mouth) Some irregularities on the floor surface are alleviated by the bulky elastic layer,
``Familiarity'' with the floor surface is improved, and extremely good simple adhesion properties can be exhibited.

In addition, in order for the tile carpet to fit on the floor surface, it needs to have an appropriate weight. For this reason, the sum of the weight B+ of the non-foamed resin layer, the weight C1 of the bulky elastic layer, and the weight D1 of the foamed synthetic resin layer having viscoelasticity is 0. 9
~3. Within the range of 0 kg/rri', preferably 1.
2-2. It is necessary to be within the range of 5 kg/d. If the total weight of these is less than 0.9 kg/rrf, the resulting tile carpet will have poor fit to the floor surface, and if it weighs more than 3.0 kg/d, it will be difficult to transport, carry in, and lay. It will also be economically disadvantageous.

In addition, in order to prevent upward "warping" of the tile carpet, it is necessary to increase the weight B1 of the non-foamed resin layer and the weight C of the bulky elastic layer.
1, it is necessary that the relationship of B1/C1≧11.0 holds true. When B1/C1 is less than 1.0, the tile carpet tends to naturally "warp" the fiber surface layer.

When such a single warp occurs, the edge of the carpet tile curls up from the floor surface, creating a risk of tripping on pedestrians and significantly impairing the aesthetics.

In addition, when the fiber material constituting the fiber surface layer is a napped pile, in order to prevent the napped pile from falling off, the root portion thereof may be treated with an adhesive for adhesion to the base fabric.

The present invention will be further described below based on Examples.

Examples and Comparative Examples A cut pile gray fabric having a pile height of 8.2 mm and a pile weight of 1350 g/m was obtained using a tufting machine using 1600 denier 2-strand nylon-BCF as the pile yarn. Next, this gray fabric was dyed with an acid dye, and subsequently, a latex containing SBR as a main component was applied to the back side of the gray fabric and dried at 130° C. for 20 minutes (amount of SBR applied: 220 g/day).

Next, PVC was applied to the back side and heated to 180℃ for 10 minutes.
It was dried for a minute to complete the gelation process (PVC application amount 1.6 kg/rrr).

Furthermore, 10 times expanded polyethylene foam (trade name "Toshi Pefu") having a thickness of 4 mm was adhered to the back surface of the PvC-applied carpet using a polyurethane adhesive.

On the other hand, polyester polyurethane (solid content 50%) 1
00 parts by weight were mixed with 10 parts by weight of a fatty acid salt activator as a foaming agent and 3 parts by weight of water-soluble epoxy as a crosslinking agent, and this mixture was mechanically foamed using a foaming machine. This material was applied to the back side of the carpet on which the polyethylene foam was pasted, and then heat treated at 120°C for 15 minutes → 160'C for 5 minutes to form a foamed polyurethane film with an expansion ratio of 3.2 times and a coating thickness of 2.8 mm. Got a pasted carpet.

Next, cut the carpet into 50x50c & large pieces.
Got carpet tiles.

On the other hand, as a comparison product, a tile carpet having the same specifications as Example 1 was prototyped, except that no PVC layer was attached to the backing layer (Comparison product 1) or polyethylene foam was not attached to the backing layer (Comparison product 2).

Table 1 shows the results of comparing the characteristics of the three types of carpet tiles.

From the results in Table 1, it is clear that the simple fastening tile carpet of the present invention is easy to lay, has excellent foot feel, fastening performance, sound insulation, and heat retention, and is difficult to deform.

(Hereafter, blank space) Table 1 *1. Test method 1) Sensory test 31 JIS L 1021 A law (Rotary Penal Code) 4) JIS A 1418 compliant.

Japanese Architectural Studies full volume “Standards and design aspects of sound insulation of buildings” (
5) ASTM D 1518-1964*2. K.E.
Y ◎ Very good ○, good △ Some problems × Most problems [Effects of the invention] The easily fixed tile carpet of the present invention has a non-foamed resin layer with appropriate hardness and rigidity, and moderate cushioning properties. Because the bulky elastic layers are sequentially laminated and bound together, it has appropriate weight, cushioning properties, and rigidity, and does not cause "warping." By laminating and bonding non-foamed resin layers, we can improve shape retention against deformation (decreased thickness retention, dimensional stability, etc.), which is a problem with interposition, or reduce the feeling of sinking when walking.
Stress concentration during walking is dispersed, there is no local sinking, and it has excellent stability against deformation.

Therefore, the easy-to-fasten tile carpet of the present invention has excellent laying performance and foot feel, as well as sound insulation and heat retention properties, and also has a removability function that allows it to be easily and repeatedly fastened and re-peeled without using adhesives. It has

Claims (7)

[Claims] (1) The following layered elements are laminated sequentially from above and bonded to each other: (A) A fiber surface layer made of a fiber material (B) A non-foamed resin layer (C) A bulky elastic layer (D) A viscoelastic layer and the weight B_1 of the non-foamed resin layer, the weight C_1 of the bulky elastic layer, and the weight D_1 of the foamed synthetic resin layer having viscoelasticity have the following relationship: B_1/C_1≧1 .0, and B_1+C_1+D_1=0.9~3.0kg/m^2
A simple fastening tile carpet that satisfies the following. (2) The simple fastening tile carpet according to claim (1), wherein the non-foamed resin layer is composed of a composition mainly containing polyvinyl chloride resin. (3) The easily fastened tile carpet according to claim (1), wherein the bulky elastic layer is composed of a composition mainly consisting of a foam having micropores and a fiber aggregate. (4) The easily fixed tile carpet according to claim (1), wherein the foamed synthetic resin layer having viscoelasticity is composed of a microporous membrane. (5) The microporous membrane has a dynamic loss E” peak temperature of -5
0°C to -10°C, the peak value of loss tangent (tan δ) is 0
．． 8 or less, dynamic viscoelasticity in the rubber region (log_1_0E
2. The easily fastened tile carpet according to claim 1, characterized in that the carpet tile is made of a resin having 9.0 dyne/cm^2 or less. (6) The easily attached tile carpet according to claim (1), wherein the microporous membrane contains pores with a maximum diameter of 3 to 250 microns and has a thickness of 0.1 to 10.5 mm. . (7) Claim (1) characterized in that the fiber surface layer is composed of a raised pile fabric, and the base fabric of the pile fabric is coated with or impregnated with an adhesive to prevent the fiber pile from falling off. Simple fastening tile carpet as described.