JPH05138826A - Matting - Google Patents

Abstract

PURPOSE:To provide a matting particularly having an excellent abrasion resistance and processability and, moreover, exhibiting no noxious gas even in the case of incineration. CONSTITUTION:A thermoplastic resin composite obtained by heat-treating (A) a polyolefin and/or (B) rubberlike substance in the presence of a cross linking agent and functional monomer as desired is made to adhere on a base cloth in the form of a sheet or cloth like matter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tatami mat, and more particularly to a tatami mat using a synthetic resin sheet or a synthetic resin cloth containing no halogen compound. Specifically, abrasion resistance is improved by fixing a partially cross-linked resin composition obtained by dynamically heat-treating a polyolefin and / or a rubber-like substance using a specific cross-linking agent or a polyfunctional monomer to a base cloth. The present invention relates to a tatami mat of a resin sheet or a cloth which has excellent properties and is capable of being sewn.

[0002]

2. Description of the Related Art In recent years, tatami mats and mats have been made from a synthetic resin sheet due to reasons such as ease of molding and lack of craftsmen, and then embossing or processing the synthetic resin into a straw shape. A tatami mat is created using a so-called cloth, which is a knitted or combined material. However, as a typical example of these tatami mats, there is one made of polyvinyl chloride, and in this case, a large amount of plasticizer is used,
Since it produces toxic halogen gas when incinerated, alternatives to it have become desired. As an alternative to polyvinyl chloride, it is easily conceivable to use polyolefin. Satisfactory results have been obtained using conventional polyolefins, but superior wear resistance is required for judo and tatami mats for business, where people exercise or move violently. ..

[0003]

SUMMARY OF THE INVENTION In view of the above points, the present invention has an object to provide a tatami mat which is particularly excellent in wear resistance, has good workability, and does not generate toxic gas even when incinerated. is there.

[0004]

Means for Solving the Problems The inventors of the present invention have made extensive studies in view of the above-mentioned objects, and as a result, have conducted a dynamic heat treatment in the presence of a polyolefin and / or a rubber-like substance, a cross-linking agent, and optionally a polyfunctional monomer. By fixing the resin composition containing the partially cross-linked product thus obtained to the base fabric, a tatami mat having excellent abrasion resistance, good workability, and generating no toxic gas even when incinerated was completed. That is, the present invention is
A thermoplastic resin composition obtained by heat-treating (A) a polyolefin and / or (B) a rubber-like substance in the presence of a cross-linking agent and optionally a polyfunctional monomer is fixed to a base cloth in a sheet shape or a cloth shape. The present invention provides a tatami mat which is characterized by having a surface hardness of Shore A indentation hardness 80 to Shore D indentation hardness 60.

The polyolefin of the present invention means high-medium density polyethylene, high-pressure low-density polyethylene, linear low-density polyethylene (LLDPE), ultra-low-density polyethylene (VLDPE), and ethylene and other α-olefins. Polyethylene resins such as polymers, ethylene-vinyl acetate copolymers, ethylene-ethyl acrylate, ethylene-ethyl methacrylate and other ethylene-carboxylic acid unsaturated ester copolymers; homopolypropylene, propylene / α-
Polypropylene resins such as olefin / block copolymers; poly-1-butene, copolymers of 1-butene and other α-olefins, poly-4-methyl-1-pentene, and the like. These are at least one or two
More than one seed is used. Furthermore, among these, carbon number 3 to
It is preferable to mix and use the α-olefin (co) polymer of 8 and the ethylene-based (co) polymer. Carbon number 3-8
The α-olefin (co) polymer of is an homopolymer of α-olefin such as polypropylene, poly-1-butene, poly-4-methyl-1-pentene, poly-1-hexene or the like. A mutual copolymer is exemplified. Of these, polypropylene resins are particularly preferable because they are inexpensive and have a good balance of physical properties such as rigidity and mechanical properties, heat resistance, and gloss and the like of the appearance of the molded product. More specifically, isotactic polypropylene, syndiotactic polypropylene, propylene-ethylene / block copolymer, propylene / ethylene / random copolymer, propylene-1-butene copolymer and the like can be used. The propylene content of the copolymer is preferably at least 60% by weight or more. These may be used alone or as a mixture.

The rubber-like substance (B) used in the present invention is an ethylene-α-olefin copolymer represented by ethylene-propylene / random copolymer rubber, ethylene-propylene-diene / random copolymer rubber and the like. Rubber, natural rubber, isobutene rubber, butadiene rubber, poly-1,2-
Butadiene rubber, which may be used alone or as a mixture. Among these, ethylene-propylene-diene / random copolymer rubber and ethylene-propylene / random copolymer rubber are particularly preferable. These two rubbers have excellent thermoplasticity compared to other rubber-like substances and are easily dispersed by melt-kneading, and are compared with styrene-butadiene copolymer rubber (SBR), isoprene rubber, nitrile rubber, butadiene rubber, etc. Then, because it has no peculiar odor or is available in the form of pellets, it is easy to measure and handle when compounding, and the degree of freedom in selecting the type of the composition manufacturing apparatus is large, etc. It has operational advantages. As the diene component of the ethylene-propylene-diene / random copolymer rubber, any of ethylidene norbornene, dicyclopentadiene, 1,4-cyclohexadiene and the like can be used.

As the cross-linking agent used in the present invention, an ordinary radical-generating agent such as hydroperoxide, dialkyl peroxide, diacyl peroxide, peroxy ester, ketone peroxide and the like which are commercially available can be used. More specifically,
Dicumyl peroxide, di-tert-butyl peroxide, 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane, 2,5-dimethyl-2,5-di (tert-
Butylperoxy) -3-hexyne, 1,3-bis (tert
-Butyl peroxyisopropyl) benzene and other azo compounds such as azobisisobutyronitrile, benzoyl peroxide, organic peroxides such as acetyl peroxide, iron (II) salts + peroxides, sulfites + persulfates, Examples thereof include benzoyl peroxide + dimethylaniline. Among these, 1,3-bis (tert-butylperoxyisopropyl) benzene is preferable in terms of odor and scorch stability.

Further, the crosslinking agent of the present invention includes (C) dihydroaromatic compounds or polymers thereof, (D) ether compounds, (E) tetrahydroaromatic compounds and (F) cyclopentane compounds. More preferably, it is at least one compound selected. The blending amount thereof is 0.01 to 7 parts by weight, preferably 0.2 to 5 parts by weight, based on 100 parts by weight of the resin component. If the amount is less than 0.01 parts by weight, the effect cannot be obtained, and if the amount exceeds 7 parts by weight, coloration and cost increase are not preferable.

The (C) dihydroaromatic compound used as a cross-linking agent is a compound containing one or more aromatic rings, in which at least one aromatic ring is dihydrogenated. The term "aromatic ring" as used herein means the definition of aromaticity (for example, "Basics of Organic Chemistry" translated by Toshio Goto, (1976)).
Tokyo Kagaku Dojin, pp. 105-106 [Richard S. Monson & John
C. Shelton, "Fundamentals of Organic Chemistry" (1
974) MacGraw-Hill, Inc.] refers to a ring structure having 4n + 2 (n is an integer) number of π-electrons, and includes, for example, pyridine and quinoline. Thus, the dihydroaromatic compounds used in the present invention also include dihydro derivatives of quinoline. Further, the dihydroaromatic compound used in the present invention may have a substituent, and a substitution product with an alkyl group, various elements and a substitution derivative with a functional group are used. Such a dihydroaromatic compound can be arbitrarily synthesized by applying a known chemical reaction, but if the currently available ones are illustrated, 1,2-dihydrobenzene, cis-1,
2-dihydrocatechol, 1,2-dihydronaphthalene, 9,10-dihydrophenanthrene and the like, 6-decyl-2,2,4-trimethyl-1,2-dihydroquinoline, 6-ethoxy-2,2,4 Examples include 1,2-dihydroquinoline-based compounds such as -trimethyl-1,2-dihydroquinoline and 2,2,4-trimethyl-1,2-dihydroquinoline. It may also be a polymer of these compounds. Among the above-mentioned dihydroaromatic compounds, there are those conventionally known as anti-aging agents for rubber-like substances (for example, JP-B-55-46661), but there is no example using this as a crosslinking agent. , Other cross-linking agents such as sulfur compounds,
Quinone dioxime compounds, phenolic resin compounds,
Since it is used together with an organic peroxide or the like, it does not show the effect of the method of the present invention.

The (D) ether compound used as a cross-linking agent in the present invention may be linear or cyclic, and may have a substituent. Specific examples thereof include cyclic ethers such as 1,3-dioxolane and 1,4-dioxane, linear ethers such as ethyl ether and isopropyl ether, and 3,4-dihydro-2-
Non-aromatic cyclic vinyl ether represented by pyran, 4H-chromene, furfuryl alcohol, furfuryl aldehyde, benzofuran, furan derivative represented by furfuryl acetate, linear vinyl ether represented by n-octadecyl vinyl ether, ethyl vinyl ether. It is an enol ether or enol ester of a carbonyl compound such as a system compound, ketene acetal, isopropenyl acetate, vinyl acetate, 1-amino-1-methoxyethylene, a lactone, an aldehyde, an amide, or a lactam. These may have a substituent,
Substitutes with an alkyl group, various elements, and derivatives substituted with a functional group are used. Moreover, these may be individual or a mixture. Preferred is vinyl or alkenyl ether.

The (E) tetrahydroaromatic compound used as a crosslinking agent in the present invention is a compound in which at least one aromatic ring is tetrahydrogenated. The aromatic ring as used herein refers to a ring structure according to the definition of aromaticity described above, and includes, for example, furan, benzene, naphthalene and the like, and excludes pyran and the like. Therefore, the tetrahydroaromatic compounds used in the present invention also include tetrahydro derivatives of naphthalene. Further, the tetrahydroaromatic compound used in the present invention may have a substituent, and a substitution product by an alkyl group and various elements and a substitution derivative by a functional group are used. Such a tetrahydroaromatic compound can be arbitrarily synthesized by applying a known chemical reaction, but if the currently available ones are exemplified, 1,2,
Examples include 3,4-tetrahydronaphthalene, tetrahydrobenzene, and tetrahydrofuran. It may also be a polymer of these compounds.

The (F) cyclopentane compound used as a cross-linking agent in the present invention is a compound containing at least one cyclopentane, cyclopentene or cyclopentadiene skeleton, that is, the ring is constructed only from carbon atoms. It is a membered ring compound. Specifically, it includes cyclopentane, cyclopentene, cyclopentadiene, dicyclopentadiene, indene, indane, fluorene and the like. These may of course have substituents, and substitution products with alkyl groups and various elements and substitution derivatives with functional groups are used. These may be used alone or as a mixture.

In the present invention, the above-mentioned component (C),
(D), (E), (F) together with (G) polyfunctional monomer,
It is preferable to use 0.01 to 7 parts by weight per 100 parts by weight of the resin component. If the addition amount is less than 0.01 parts by weight, the crosslinking effect is low, and if it exceeds 7 parts by weight, the polyfunctional monomer causes bleeding to the surface, coloration, and cost increase, which is not preferable. Specific examples of polyfunctional monomers include trimethylolpropane trimethacrylate, higher esters of methacrylic acid typified by ethylene glycol dimethacrylate, divinylbenzene, triallyl isocyanurate, and polyfunctional vinyl monomers typified by diallyl phthalate. And N, N'-m-phenylene bismaleimide, bismaleimides represented by N, N'-ethylene bismaleimide, and the like. It is preferable that these are at least bifunctional or higher in order to enhance the effect of the dynamic heat treatment described later. Among polyfunctional monomers, bismaleimides are particularly preferred because of their high reactivity. You may use these in combination of 2 or more types.

In the thermoplastic resin composition of the present invention, the above-mentioned polyolefin, rubber-like substance, cross-linking agent and polyfunctional monomer are mixed in advance or at the time of heat treatment, and the mixture is dynamically heat-treated (melt kneading). It is obtained by partially crosslinking. The characteristic of the composition partially crosslinked by the dynamic heat treatment is that the boiling xylene insoluble content in the composition is increased compared to the value before kneading. One of the indexes for judging the effect of the present invention is an increase in boiling xylene insoluble matter achieved by this heat treatment. Generally, as the boiling xylene insoluble content increases, the effects such as impact resistance and tensile strength are improved. The main factor for increasing the boiling xylene insoluble content is the above-mentioned cross-linking agent and the addition amount of the polyfunctional monomer, and these addition amounts are the above-mentioned depending on the kind of the cross-linking agent or the like and the apparatus and conditions of the melt-kneading. Adjust within the range.

The temperature of the above-mentioned dynamic heat treatment is higher than the melting point or softening point of the polyolefin and / or the rubber-like substance,
And within the temperature range below the decomposition point, specifically, temperature 1
It is in the range of 20 to 350 ° C., and the heat treatment time is 20 seconds to
It is preferable that the time is 20 minutes. In melt-kneading, it is preferable to use a mixer having a high shear rate to facilitate the generation of radicals in the mixture.

The (H) inorganic filler used in the present invention is
Conventionally known powdery, flat, scale-like, needle-like, spherical or hollow and fibrous substances can be used. More specifically, calcium carbonate, magnesium carbonate, magnesium hydroxide, calcium sulfate, silica sand calcium,
Clay, diatomaceous earth, talc, alumina, glass powder, iron oxide, metal powder, graphite, silicon carbide, silicon nitride, silica, boron nitride, aluminum nitride, carbon black and other powdery fillers, mica, glass plate, sericite, Pyrophyllite, metal foil such as aluminum flakes, flat or scale-like filler such as graphite, shirasu balloon, metal balloon, hollow filler such as pumice, glass fiber, carbon fiber,
Graphite fibers, whiskers, metal fibers, silicon carbide fibers, mineral fibers such as asbestos and wollastonite can be used, and the amount thereof is 3 to 100 parts by weight based on 100 parts by weight of the resin component. If the amount is less than 3 parts by weight, no effect is obtained, and if the amount is more than 100 parts by weight, the composition is vulnerable to impact, which is inconvenient for use. The above-mentioned inorganic fillers may be used alone or as a mixture, and the type and blending amount may be determined according to the purpose. Further, in order to improve the dispersibility thereof, those subjected to surface treatment with a silane coupling agent, an organic titanate coupling agent, a fatty acid metal salt or the like may be used.

In the present invention, a softening agent can be added to improve moldability and flexibility. As the mineral oil-based softening agent, the same ones as commonly known as expander oils, which are used for the purpose of improving the processability during rubber processing, the effect of increasing the amount, or the dispersibility of the filler, are used. These are high boiling point petroleum fractions and are classified into paraffinic, naphthenic and aromatic types. In the present invention, not only these petroleum fractions but also synthetic oils such as liquid polyisobutene can be used. The blending amount of the oil (mineral oil type or synthetic oil type) is 0.1 to 50 parts by weight with respect to 100 parts by weight of the resin component. If the compounding amount is less than 0.1 part by weight, the effect cannot be obtained, and if it exceeds 50 parts by weight, the tatami mat becomes too soft and bleeding occurs, which is inconvenient for use.

The above-mentioned inorganic filler and / or softening agent may be added at once or after the heat treatment and may be added in a divided amount at a time, but preferably, it is melt-kneaded together with other components during the heat treatment. Preferably.

As the melt-kneading device for performing the dynamic heat treatment, conventionally known devices such as an open type mixing roll, a non-open type Banbury mixer, an extruder, a kneader and a twin screw extruder can be used. In the present invention, the partially crosslinked product thus obtained can be used alone or as a mixture with another thermoplastic resin, but a dynamic heat treatment is carried out at the time of forming a sheet by the following extrusion molding or the like. May be carried out to obtain a partially crosslinked product.

The partially crosslinked product of the present invention has a surface hardness of 80 or more Shore A indentation hardness and 60 Shore D indentation hardness.
Must be: If the hardness is less than Shore A80, it is too soft and wear resistance increases, and Shore D60
If it exceeds, it feels too hard, so neither can be used as a tatami mat.

When a polymer having a hard segment and a soft segment is used as a component of the partially crosslinked product of the present invention, the mutual dispersibility is good and the receptivity of the inorganic filler is improved. Since the mechanical properties are not deteriorated even when the agent is filled, it is possible to provide a tatami-mat table which is excellent in cigarette resistance and has a soft touch.

The tatami mat of the present invention may be in the form of a sheet obtained by embossing the thermoplastic resin composition obtained above, or a cloth obtained by processing the resin composition into a straw and knitting or combining it. Good, but it must finally stick to the backing. In order to fix the resin sheet and the base cloth, after the resin composition is formed into a sheet by a usual method such as extrusion molding (eg, T-die method) or calendering method, the resin composition is not completely solidified in the sheet. It may be fixed to the base cloth in house, or may be fixed to the base cloth simultaneously with the extrusion molding. Similarly, the embossing may be performed after the molding or at the same time as the molding.
When the cloth and the base cloth are fixed to each other, the cloth may be fixed after the cloth is manufactured, and if possible, the cloth and the base cloth may be fixed at the same time as the cloth is manufactured. In the present invention, fixing means fixing the thermoplastic resin composition and the base fabric so as not to peel off, and by applying heat to the same resin composition, a method of allowing the base fabric to soak before the resin is cured. Or, it may be bonded with a primer. When the base cloth is a thermoplastic resin, a part of the base cloth may be dissolved in the thermoplastic resin composition as long as the characteristics of the cloth are exhibited.

The base fabric used in the present invention refers to a fiber product which is a yarn, a knitted fabric, a woven fabric or a composite fabric prepared by mixing one or more fibers. As the above-mentioned fibers, all known fibers can be used, but specifically, cellulose fibers such as cotton and hemp, protein fibers such as wool and silk, cellulosic regenerated fibers such as rayon, cupra and polynosic, acetate and triacetate. Semi-synthetic fiber, nylon, polyester, acrylic and acrylic fiber, vinylon, etc.
Polypropylene, polyvinyl chloride, polyethylene, vinylidene, polyurethane, benzoate, polyclar,
There are various synthetic fibers such as Kevlar, and inorganic fibers such as glass fiber, metal fiber and carbon fiber. Among them, polyolefin-based woven cloth is preferable because it is possible to recover the resin without generating toxic gas. ..

The thickness of the tatami mat of the present invention is preferably 0.3 to 5 mm. If it is less than 0.3 mm, it is difficult to emboss,
When it exceeds 5 mm, it is not preferable as a tatami mat because it is too elastic.

As the tatami floor for producing a chemical tatami mat using the tatami mat of the present invention, straw, cork, resin, wood or the like can be used, but it is washable and convenient for recycling. It is preferably a polyolefin resin. A laminate of a polyolefin-based foamed resin and a hollow synthetic resin plate is particularly preferable because it is lighter and tougher and has a good tatami mat feel. The connection between the tatami mat and the tatami mat is
Although it may be adhered only by using a primer, it is preferable to sew it in the same manner as a normal tatami mat after the adhesion.

In the thermoplastic resin composition of the present invention, if necessary, a stabilizer, an antioxidant, an ultraviolet absorber, a lubricant,
Foaming agent, antistatic agent, flame retardant, plasticizer, dye, pigment,
An antibacterial agent, a fragrance, a modified olefin and the like may be appropriately mixed, or the surface of the tatami mat may be coated with a silicone resin or a urethane resin.

[0027]

EXAMPLES The present invention will now be specifically described with reference to examples, but the present invention is not limited thereto. First, a method for testing and measuring physical properties in Examples and Comparative Examples will be described. Test and measurement methods <Shore D _{durometer, H D D> JIS K6760,} JI
According to SK7215. <Shore A durometer, H _D A> According to the ISO 868. <Boiling xylene insoluble matter> A film of 20 mm x 50 mm x 0.2 mm was press-molded, placed in a 120 mesh wire net, and immersed in boiling xylene for 5 hours. The weight before and after the immersion was measured, and the boiling xylene insoluble content was calculated from the following formula 1.

[Equation 1] <Formability> The formability of the sheet with the T-die was evaluated according to the following criteria. ◯: Molding is possible without any problem, ×: There is a problem in molding. <Feeling> Foaming ratio of 30 on sheets laminated with T-die
The following criteria were used to evaluate the feel by the method of sticking double polypropylene sheets and pressing the sheet and stroking. ◯: No stickiness, it is dry, ×: Sticky. <Abrasion resistance> A broad cloth was used as a friction cloth using a traverse type abrasion tester. Load 0.1 kgf / cm ² , stroke 100 mm, friction cloth speed 30 reciprocations / min, 2,000
The test was conducted under reciprocating conditions. The change in embossing was evaluated according to the following criteria. ◯: There was no change, X: The emboss was worn.

Method for producing resin composition The following components (A) to (H) are blended in the proportions shown in Table 1 and mixed in a Henschel mixer, and the resulting mixture is a twin-screw continuous kneading extruder (30 mmφ, Plastic Engineering Laboratory
(Manufactured by K.K.) was used and melt-kneaded at a resin temperature of 180 to 260 ° C. and a rotation speed of 200 rpm. Component (I) was added via a reciprocating metering pump connected to the vent. A sheet having a thickness of about 2 mm was produced from the obtained thermoplastic resin composition by a press molding machine, and the physical properties were measured by the above-mentioned test and measurement methods. Various components used (A): Polyolefin (A ₁ ): Polypropylene (Brand name: Nisseki Polypro J6
30G, Nippon Petrochemicals Co., Ltd.) (A _2): very low-density polyethylene (trade name: Nisseki soft Rex D9550, Nippon Petrochemicals Co., Ltd.) (B): a rubber-like material (B _1): Ethylene -Propylene / random copolymer rubber (trade name: JSREP02P, Japan Synthetic Rubber Co., Ltd.)
Ltd.) (B _2): ethylene - propylene - diene random copolymer rubber (trade name: JSR EP57P, Japan Synthetic Rubber Co., Ltd.) (C): 2,2,4-trimethyl-1,2-dihydro Quinoline (Product name: Nocrac 224S, manufactured by Ouchi Shinko Chemical Co., Ltd.) (D): 3,4-dihydro-2-pyran (Tokyo Kasei Co., Ltd.)
(E): 1,2,3,4-tetrahydronaphthalene (manufactured by Tokyo Kasei Co., Ltd.) (F): Indene (manufactured by Tokyo Kasei Co., Ltd.) (G) N, N'-m-phenylene bismaleimide (Brand name: Barnock PM, manufactured by Ouchi Shinko Chemical Industry Co., Ltd.) (H): Inorganic filler (Brand name: Dicalite) (I): Softener (Brand name: Super Oil C, Nippon Oil Co., Ltd.
(Made by)

[0029]

[Table 1]

Examples 1 to 4 and Comparative Examples 1 to 4 The resin composition obtained by the above method was molded into a thickness shown in Table 2 using a T-die molding machine (screw diameter: 50 mm), and a tatami pattern was formed. While embossing the base fabric (Sufu 9
A2020) was laminated to prepare a tatami mat. Table 2 shows the evaluation results as a tatami mat. As a reference example, a commercially available polyvinyl chloride (thickness: 1 mm; trade name: NK plus mat, manufactured by NIPPON KOEI PAPER CO., LTD.) Was tested. Table 2
As can be seen, in the examples, the feel and wear resistance comparable to those of vinyl chloride are maintained, but in the comparative examples, the feel and wear resistance are inferior.

[0031]

[Table 2]

[0032]

EFFECTS OF THE INVENTION The tatami mat of the present invention has good chemical properties such as water resistance and can be washed with water, and is not only resistant to repeated use but also a cross-linked composition, so that it has abrasion resistance and heat resistance. It has excellent properties and can be sewn by fixing the base fabric, so it can be used for a long period of time in various environments without problems. It is also recyclable and does not generate toxic gases when incinerated for disposal. Even when a halogen-based compound is partially used, the amount thereof can be limited to an extremely small amount.

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Claims (6)

[Claims] 1. A thermoplastic resin composition obtained by heat-treating (A) a polyolefin and / or (B) a rubber-like substance in the presence of a cross-linking agent and optionally a polyfunctional monomer is formed into a sheet or cloth. Is fixed to the base fabric and has a surface hardness of Shore A, indentation hardness of 80 to Shore D.
A tatami mat having an indentation hardness of 60. 2. The thermoplastic resin composition comprises (A) a polyolefin (A ₁ ) an α-olefin (co) polymer having 3 to 8 carbon atoms.
And / or (A ₂ ) 30 to 100% by weight of a polyethylene resin, (B) 0 to 70% by weight of a rubber-like substance, (C) a dihydroaromatic compound or a polymer thereof as a crosslinking agent, (D) an ether System compound, (E) tetrahydroaromatic compound and (F) cyclopentane compound at least one compound selected from 0.01 to 7 per 100 parts by weight of the resin component [(A) + (B)]. The tatami mat according to claim 1, wherein the polyfunctional monomer (G) is obtained by dynamic heat treatment of 0.01 to 7 parts by weight with respect to 100 parts by weight of the resin component. 3. The thermoplastic resin composition is blended with 100 parts by weight of (H) an inorganic filler of 3 to 100 parts by weight and / or (I) a softening agent of 0.1 to 50 parts by weight. The tatami mat according to claim 1 or 2. 4. The rubber-like substance (B) compounded in the thermoplastic resin composition is ethylene-propylene / random copolymer rubber or ethylene-propylene-diene / random copolymer rubber. The tatami mat according to any one of 3 above. 5. The (C) dihydroaromatic compound compounded in the thermoplastic resin composition is a 1,2-dihydroquinoline compound or a polymer thereof, and the (D) ether compound is dihydropyran. The tatami mat according to claim 2 or 3, wherein the (E) tetrahydroaromatic compound is 1,2,3,4-tetrahydronaphthalene, and the (F) cyclopentane compound is indene. 6. The (G) polyfunctional monomer blended in the thermoplastic resin composition is a bismaleimide compound,
The tatami mat according to claim 2 or 3, which is a diacrylate compound or a dimethacrylate compound.