JP2014047589A - Floor material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor material of which both anti-slip property and antifouling property are simultaneously improved by means different from conventional one.SOLUTION: A floor material F1 has at least first resin regions 1 and second resin regions 2 on a surface of the floor material. The first resin region 1 is a resin region including a vinyl chloride resin and a polyurethane-based thermoplastic elastomer as main component resin and the second resin region 2 is a resin region in which hard particles are contained in the vinyl chloride resin. The first resin region 1 is additionally provided with rubber-elastic physical property by the polyurethane-based thermoplastic elastomer, and exhibits an excellent slip prevention action. The second resin region 2 causes scratches hardly owing to the hard particles, makes staining substance adhered hardly, and can remove staining substance easily even when it is adhered, thus exhibiting both of excellent anti-slip property and excellent antifouling property simultaneously.

Description

  The present invention relates to a flooring material that covers indoor and outdoor floors and stairs, and more particularly to a flooring material that has both good anti-slip properties and antifouling properties.

  Floor materials covering indoor and outdoor floors and stairs are required to have antifouling properties because dirt materials are rubbed against the soles of pedestrians, and to avoid the risk of pedestrians slipping and falling. Non-slip properties are required. Here, the “antifouling property” means a property that a dirt substance is difficult to adhere and can be easily removed by washing or the like even if it adheres.

  Examples of the flooring material having antifouling property include, for example, polyvinyl chloride resin and / or ethylene-vinyl acetate copolymer resin, and calcium carbonate, talc, clay, magnesium oxide, water having an average particle diameter of 1 to 15 μm as a filler. A flooring made of a resin mixture containing any one or more of magnesium oxide has already been proposed (Patent Document 1).

  Further, as a floor structure having anti-slip property, water permeability, and durability, a floor material provided by bonding a base and a large number of small blocks made of urethane elastomer with a binder and provided above the base. There has already been proposed a floor structure having a layer, in which irregularities are formed on the upper surface of the floor material layer, and a small gap is formed between the small blocks (Patent Document 2).

JP 2007-255089 A JP-A-6-229106

  The flooring material of Patent Document 1 is intended to improve the antifouling property by adopting a means of blending a filler having an average particle diameter of 1 to 15 μm. However, since the filler is not hard particles, it is chlorinated. Even if a filler is added to a flooring material made of vinyl resin, etc., the flooring surface is likely to be scratched due to friction with the shoe sole, and soiling substances adhere to the scratching and are not easily removed. There is a problem that it is difficult to improve sufficiently.

  On the other hand, the flooring layer in the floor structure of Patent Document 2 adopts a means of forming unevenness for preventing slipping on the upper surface and improves the anti-slip property, so that dust and dirt tend to accumulate in the recesses on the upper surface, There is a problem that it is difficult to clean the accumulated dust and dirt, and further, there is a problem that the slip resistance is lowered as the convex portion on the upper surface is worn.

  As described above, the floor material is required to have both anti-slip property and anti-stain property. However, it has not yet been developed a floor material having both good anti-slip property and good anti-stain property.

  The present invention has been made under the circumstances described above, and the problem to be solved is a flooring material in which both slip resistance and antifouling property are simultaneously improved by means different from the means described in Patent Documents 1 and 2. It is to provide.

  In order to solve the above problems, a flooring according to the present invention is a flooring having at least a first resin region and a second resin region on the surface of the flooring, wherein the first resin region is a vinyl chloride resin. And a polyurethane thermoplastic elastomer as a main component resin, and the second resin region is a resin region in which hard particles are contained in a vinyl chloride resin.

In the flooring of the present invention, the area ratio between the first resin region and the second resin region on the flooring surface is preferably 10:90 to 35:65.
The polyurethane-based thermoplastic elastomer contained in the first resin region is preferably an elastomer having compatibility with the vinyl chloride resin. Here, “compatible” means a property that the polyurethane-based thermoplastic elastomer is apparently mixed uniformly without being phase-separated from the vinyl chloride-based resin.
The second resin region preferably further contains an ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer.
Further, the hard particles contained in the second resin region are preferably quartz particles.

As in the flooring according to the present invention, at least the first resin region and the second resin region are provided on the flooring surface, and the first resin region is mainly composed of a vinyl chloride resin and a polyurethane thermoplastic elastomer. When it is a resin, a rubber-based physical property is added to the first resin region by the polyurethane-based thermoplastic elastomer, so that the first resin region exhibits an excellent anti-slip action. Even if the surface is not provided with anti-slip irregularities, the anti-slip property of the flooring is improved. Therefore, the risk of the pedestrian slipping his / her foot and falling is reduced, and the dust and dirt on the floor material surface can be easily cleaned.
In addition, as in the flooring according to the present invention, when the second resin region is a region in which hard particles are contained in a vinyl chloride resin, the exposed surface of the second resin region is bonded to the shoe sole by the hard particles. Scratching due to friction is less likely to occur, dirt substances are less likely to adhere, and even if they adhere, they can be easily removed by washing or the like, so that the antifouling property is improved.
As described above, the floor material of the present invention has at least the first resin region having good anti-slip property and the second resin region having good anti-smudge property on the floor material surface. When the area ratio between the first resin region and the second antifouling resin region on the floor material surface is 10:90 to 35:65, the antislip property can be exhibited. The antifouling property can be exhibited in a more balanced manner.
In the flooring of the present invention, since the main resin is a vinyl chloride resin in both the first resin region and the second resin region, and both resin regions are firmly fused and bonded, There is no worry of peeling or cracking.

  Further, if the polyurethane-based thermoplastic elastomer contained in the first resin region is compatible with the vinyl chloride resin, the polyurethane-based thermoplastic elastomer is uniformly mixed without being phase-separated with the vinyl chloride resin, As described above, the rubber property can be added to the first resin region to improve the slip resistance. In contrast, polyurethane-based thermoplastic elastomers that are not compatible with vinyl chloride resins do not substantially contribute to the improvement of anti-slip properties because they are not phase-separated even when mixed with vinyl chloride resins.

  Furthermore, when the second resin region contains an ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer, the antifouling property is further improved. The reason is that the ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer is a copolymer obtained by grafting the side chain vinyl chloride to the main chain ethylene / vinyl acetate copolymer. The entanglement between the molecules makes it difficult for the plasticizer that causes dirt adhesion contained in the vinyl chloride resin to bleed out to the surface of the second resin region, and the surface of the second resin region is scratched. It is presumed that it is more difficult to attach.

  In addition, if the hard particles contained in the second resin region are quartz particles, they are less likely to be scratched and the antifouling property is surely improved, and quartz particles such as silica sand can be obtained at low cost and economically. Is also advantageous.

It is a schematic sectional drawing of the flooring which concerns on one Embodiment of this invention. It is a schematic sectional drawing of the flooring which concerns on other embodiment of this invention. It is a schematic sectional drawing of the flooring which concerns on other embodiment of this invention. It is a schematic sectional drawing of the flooring which concerns on other embodiment of this invention.

  Hereinafter, the flooring of the present invention will be described in detail with reference to the drawings.

  The flooring material of the present invention includes at least a first resin region mainly composed of a vinyl chloride resin and a polyurethane thermoplastic elastomer on the floor material surface, and a second resin material containing hard particles in the vinyl chloride resin. There are various embodiments as illustrated in FIGS. 1 to 4 depending on the distribution state of the first resin region and the second resin region.

That is, in the floor material F1 of the embodiment illustrated in FIG. 1, the entire floor material is formed by the first resin region 1 and the second resin region 2 over the entire thickness of the floor material.
In the floor material F2 of the embodiment illustrated in FIG. 2, the surface layer 3 is formed by the first resin region 1 and the second resin region 2 over the entire thickness of the surface layer 3, and the back surface layer 4 is formed on the back side thereof. Are laminated.
Further, the floor material F3 of the embodiment illustrated in FIG. 3 is a mixture of a small lump-shaped first resin region 1 and a small lump-shaped second resin region 2 over the entire flooring material.
Furthermore, in the floor material F4 of the embodiment illustrated in FIG. 4, the first resin region 1 in the form of a lump and the second resin region 2 in the form of a lump are mixed over the entire surface layer 3, and the back layer 4 is formed on the back side thereof. Are laminated.

  In addition to these, in the flooring material F1 in FIG. 1, another functional resin region that extends over the entire thickness of the flooring material is further formed. In the flooring material F2 in FIG. 2, the entire thickness of the surface layer 3 extends. In the case where another functional resin region is further formed on the surface layer 3, in the flooring material F3 in FIG. 3, in the flooring material F4 in FIG. In the floor layer F2 and F4 in FIG. 2 and FIG. 4 in which other functional resin regions in the form of small blocks are further mixed, an intermediate layer (for example, a glass nonwoven fabric) between the surface layer 3 and the back surface layer 4 There are various embodiments, such as those provided. Moreover, the surface of the flooring material of each embodiment may be smooth, and the unevenness | corrugation may be formed in the flooring material surface by embossing.

  The other functional resin region may be a resin region having any function except the anti-slip function and the anti-fouling function, for example, wear resistance, antistatic property, antibacterial antibacterial property, self-luminous property, A resin region having a desired function such as hydrophilicity, hydrophobicity, and weather resistance can be additionally provided. The other functional resin region may be a region having a single function, a region having a plurality of functions, or a plurality of regions having a single different function. May be. These functional resin regions are formed of a mixture mainly composed of a thermoplastic resin that is compatible with the main component resin (vinyl chloride resin) of the first resin region 1 and the second resin region 2, It is desirable to fuse at the interface with the first resin region 1 and the interface with the second resin region 2, but these resin regions 1 and 2 and other functional resin regions are bonded with a binder or the like. May be.

  As described above, the first resin region 1 is a region mainly composed of a vinyl chloride resin and a polyurethane thermoplastic elastomer, and the first resin region 1 contains a plasticizer. , Well-known stabilizers (for example, epoxy-based, Ba / Zn-based stabilizers), processing aids, reinforcing agents, reinforcing materials (for example, glass fibers and resin fibers), impact resistance improvers, lubricants, etc. Is done.

  As the vinyl chloride resin which is the main component resin of the first resin region 1, a general linear vinyl chloride resin having a number average molecular weight of about 800 to 4000 and a chlorination degree of about 57%, Vinyl chloride resin having a branched chain, crosslinked vinyl chloride resin, ethylene-vinyl chloride copolymer, chlorinated vinyl chloride resin, etc. are used, and among these, vinyl chloride resin having a branched chain from the main chain is preferably used. Is done.

  The vinyl chloride resin having the above-mentioned branched chain is obtained by polymerization using a branched monomer having three or more bond ends, and has a high number average molecular weight of about 3000 to 5000 and rubber elasticity. Things are suitable. When a vinyl chloride resin having such a branched chain is used as the main component resin of the first resin region 1, the floor material when wet is more slippery than when a linear vinyl chloride resin is used. As shown in test data to be described later, the flooring test piece consisting only of the first resin region has a slip resistance coefficient of 0.5 or more when wet.

The length and number of the branched chain of the vinyl chloride resin having the branched chain are qualitatively measured by gel permeation chromatography (GPC) by measuring the number average molecular weight (Mn) and the weight average molecular weight (Mw), and the ratio ( Mw / Mn) and quantitatively by ¹³ C NMR.

  The polyurethane-based thermoplastic elastomer, which is another main component resin of the first resin region 1, adds rubber elastic properties to the first resin region 1, thereby preventing the slip of the first resin region 1, It mixes in order to improve the anti-slip action of the flooring materials F1 to F4, and is limited to those having compatibility with the vinyl chloride resin. Even if it is a polyurethane-based thermoplastic elastomer, those that are not compatible with vinyl chloride-based resins and those that are poorly compatible do not mix evenly with vinyl chloride-based resins, and will not mix uniformly. This is because it is difficult to increase the anti-slip property by imparting rubber elastic properties to the first resin region 1, and the strength suitable for the flooring material cannot be obtained.

  Polyurethane-based thermoplastic elastomers are manufactured by reacting polyisocyanates as hard segments with polyester polyols and polyether polyols as soft segments to form urethane bonds. Polyurethane-based thermoplastic elastomers react with polyisocyanates and polyether polyols. The ether-type polyurethane-based thermoplastic elastomer thus obtained is inferior in compatibility with the vinyl chloride-based resin and does not substantially contribute to the improvement of the anti-slip property, so that it is difficult to use in the present invention. In contrast, ester polyurethane thermoplastic elastomers obtained by reacting polyisocyanates and polyester polyols are compatible with vinyl chloride resins, and when mixed with vinyl chloride resins, they are uniformly good without phase separation. Mixing and adding rubber-elastic properties to the first resin region 1 to greatly contribute to the improvement of anti-slip properties, it is very preferably used.

  Specific examples of ester-type polyurethane thermoplastic elastomers compatible with vinyl chloride resins include, for example, those obtained by reacting polyisocyanates with polyester polyols such as adipates and polycaprolactones, and their hardness Is preferably 70 A or less.

  Said ester type polyurethane-based thermoplastic elastomer occupies 10 to 50 parts by mass of 100 parts by mass of the main component resin in the first resin region 1 (in other words, 10 to 50% by mass of the main component resin). Preferably). When the ratio of the ester-type polyurethane-based thermoplastic elastomer to the main component resin is within the above range, as shown in the test data described later, the slip resistance at the time of drying of the floor material test piece consisting only of the first resin region 1 The coefficient (JIS A 1407) is 0.8 or more, the slip resistance coefficient when wet is 0.4 or more, and the slip resistance during drying and the slip resistance when wet are improved. However, if the ester-type polyurethane-based thermoplastic elastomer is less than 10 parts by mass, the slip resistance coefficient at the time of drying is less than 0.8, and if it exceeds 50 parts by mass, the slip resistance coefficient at the time of wetness is 0.00. It becomes smaller than 4, and the improvement of slip resistance becomes insufficient.

  The type of plasticizer contained in the first resin region 1 is not limited, and various known plasticizers such as phthalic plasticizers such as DOP, phosphoric plasticizers, and fatty acid plasticizers. One or more plasticizers selected from a group of known plasticizers such as non-polymer plasticizers such as chlorinated paraffin, polymer plasticizers, epoxy plasticizers, etc. it can.

  The plasticizer is preferably contained in the first resin region 1 in a proportion of 25 to 90 parts by mass with respect to 100 parts by mass of the vinyl chloride resin as the main component resin. As shown in test data to be described later, even a flooring test piece composed of only the first resin region 1 improves not only the anti-slip property but also the anti-taber anti-stain property. When the content of the plasticizer is less than 25 parts by mass, as shown in test data described later, the slip resistance coefficient during drying of the floor material test piece consisting only of the first resin region 1 becomes smaller than 0.8. Thus, when the improvement of the anti-slip property becomes insufficient and the plasticizer content exceeds 90% by mass, as shown in the test data to be described later, the taber antifouling of the floor material test piece consisting only of the first resin region 1 The property ΔE exceeds the range of acceptable values both in the case of dry wiping and in the case of water wiping, and it is difficult to improve the antifouling property.

  On the other hand, as described above, the second resin region 2 is a region in which hard particles are contained in a vinyl chloride resin, and preferably an ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer is further blended. . Plasticizers and fillers are also blended, and known stabilizers, processing aids, reinforcing agents, reinforcing materials (for example, glass fibers and resin fibers), impact resistance improvers, lubricants, and the like are blended as appropriate.

  As the vinyl chloride resin which is the main component resin of the second resin region 2, a linear vinyl chloride resin having a number average polymerization degree of about 800 to 1500 and a chlorination degree of about 57% is preferably used. Vinyl chloride resin, ethylene-vinyl chloride copolymer, chlorinated vinyl chloride resin and the like are also used. A vinyl chloride resin having a branched chain from the main chain is also used.

  The ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer desirably blended in the second resin region 2 is obtained by grafting polyvinyl chloride onto the ethylene / vinyl acetate copolymer as a polymer main chain. In addition, a graft copolymer having a number average polymerization degree of about 500 to 1100 in which 5 to 50% by mass of an ethylene / vinyl acetate copolymer component (or 5 to 10% by mass of a vinyl acetate component) is used is used.

  When the second resin region 2 is formed from a mixture of the above vinyl chloride resin, the above ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer, and a plasticizer, the taber antifouling property of the flooring is improved. However, as can be seen from the result of the dirt test described later, in the flooring test piece consisting only of the second resin region 2, ΔE when dry wiped is 4.5 or less, and ΔE when wiped with water is 4.0. It becomes as follows.

  The ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer is chlorinated so that the ethylene / vinyl acetate copolymer component accounts for 1.5 to 20.0% by mass of the resin component in the second resin region 2. It is preferable to mix with a vinyl-based resin. When the second resin region 2 is formed with such a mixture, the taber antifouling property of the flooring is further improved. In the floor material test piece consisting only of the resin region 2, ΔE when wiped dry is 4.0 or less, and ΔE when wiped with water is 3.5 or less. Even if the ratio of the ethylene / vinyl acetate copolymer component in the resin component of the second resin region 2 (hereinafter referred to as ethylene / vinyl acetate component content) is less than 1.5% by mass, 20.0% Even if it exceeds the%, the Taber antifouling property of the flooring material decreases. The ethylene / vinyl acetate component content is the mass ratio of the ethylene / vinyl acetate copolymer component in the resin component of the second resin region 2 in terms of 100 fractions. Only the resin component of the second resin region 2 is used as a denominator, and components other than the resin such as a plasticizer, a stabilizer, and a filler are calculated without being included in the denominator.

  As described above, an ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer is obtained by grafting vinyl chloride onto an ethylene / vinyl acetate copolymer as a polymer main chain. Excellent compatibility with. Therefore, the floor material provided with the second resin region 2 comprising the ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer and vinyl chloride resin as component resins is improved in flexibility and has a 10% modulus at 23 ° C. Since (M10) decreases and the elongation at break (Lb) increases, it becomes easier to cover the floor material or stairs along the floor, and the workability is improved.

  Incidentally, even if a resin region is formed by mixing ethylene / vinyl acetate copolymer with vinyl chloride resin instead of ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer, Dirtyness does not improve and flexibility is insufficient. From this, it is proved that mixing of the ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer with the vinyl chloride resin is extremely effective in improving the antifouling property and flexibility of the flooring.

  The hard particles contained in the second resin region 2 serve to increase the scratch resistance of the second resin region 2 and improve the antifouling property of the flooring material. The Mohs hardness is 6 to 13, Hard particles having a particle size of about 30 to 80 μm are preferably used. Typical examples of preferable hard particles include quartz sand and other quartz particles, alumina and other metal particles, and the former quartz particles are particularly preferably used because they can be obtained at low cost.

  The hard particles are preferably contained at a rate of 2 to 15 parts by mass with respect to 100 parts by mass of the resin component of the second resin region 2. Since the scratch resistance of the surface is improved and scratches due to the shoe sole are less likely to be attached, dirt substances are less likely to adhere and can be easily removed even if attached, so that good antifouling properties can be demonstrated over a long period of time. Become. And the wear resistance is also greatly improved, and as can be seen from the results of the wear test described later, the floor material test piece consisting only of the second resin region 2 has a rotational speed required for 1 mm wear of 10,000 times or more. If the content of hard particles is less than 2 parts by mass, the antifouling property will be insufficient, and if it exceeds 15 parts by mass, the second resin region 2 will become hard and the flexibility of the flooring will decrease. This is also not preferable. The more preferable content of the hard particles is 2.5 to 10 parts by mass with respect to 100 parts by mass of the resin component.

  As the plasticizer to be contained in the second resin region 2, a dibasic acid ester plasticizer obtained by reacting a dibasic acid and a glycol is suitable. Specifically, aliphatic compounds such as adipic acid, succinic acid, and benzoic acid are used. An ester plasticizer of an aromatic dibasic acid such as dibasic acid, phthalic acid, or 1,6-naphthalenedicarboxylic acid and glycol is used. Among these, ester plasticizers of aromatic dibasic acid and glycol are preferable, and ester plasticizers (DOP and the like) of phthalic acid and glycol are particularly preferably used. Further, non-polymer plasticizers such as phosphate plasticizers, epoxy plasticizers, chlorinated paraffins, and polymer plasticizers that have been used as plasticizers for vinyl chloride resins are also used. The content of these plasticizers is suitably 30 to 60 parts by mass with respect to 100 parts by mass of the resin component in the second resin region 2.

  The second resin region 2 can contain a mixture of two or more of the plasticizers, but 20-60% by mass of the total amount of the plasticizer, especially 25-50% by mass has a molecular weight of 500-8000. It is preferably occupied by a polymer type dibasic ester plasticizer.

  One of the causes of floor surface contamination is that the plasticizer added for the purpose of imparting flexibility to the flooring bleeds out to the flooring surface during long-term use, and this bleed-out viscous plasticizer It is thought that the dirt substance is entangled on the floor material surface, and the dirt substance is fixed on the flooring surface. However, the above polymer type dibasic acid ester plasticizer has a long molecular chain. Are entangled with the molecules of the vinyl chloride resin and the copolymer and rarely bleed out from the surface of the second resin region 2, so that this high molecular type dibasic acid ester plasticizer is used for other low molecular type, for example. When used in combination with a dibasic acid ester plasticizer or other plasticizers, the antifouling property can be improved, and the second resin region 2 is caused by entanglement with the molecules of the vinyl chloride resin or the copolymer. Scratch resistance It is possible to improve. However, since the polymer type dibasic acid ester plasticizer has low compatibility with the vinyl chloride resin, if the ratio of the polymer type dibasic acid ester plasticizer in the entire plasticizer becomes excessive, the second type The flexibility of the resin region 2 and thus the flexibility of the flooring material will be reduced. Therefore, the ratio of the polymer type dibasic acid ester plasticizer in the entire plasticizer is preferably within the above range.

  As in the case of the second resin region 2, the first resin region 1 may be used in combination with a polymer type dibasic acid ester plasticizer and another plasticizer.

  Moreover, it is preferable to make the 2nd resin area | region 2 contain 10-70 mass parts of fillers with respect to 100 mass parts of resin components. As the filler, one selected from inorganic fillers such as calcium carbonate (heavy calcium carbonate and light calcium carbonate), talc, and organic fillers such as phenol resin, melamine resin, wood flour, pulp, or A plurality of types of powders and those having a shape such as a fiber shape or a scale shape are used. These fillers are blended for the purpose of reducing the amount of resin used, dimensional stability, etc., and their Mohs hardness is generally 3 or less.

  The first resin region 1 and the second resin region 2 described above are formed in a large number on the entire flooring so as to be alternately adjacent as resin regions over the entire thickness of the flooring, as in the flooring F1 shown in FIG. Alternatively, like the floor material F2 shown in FIG. 2, a large number of resin layers may be formed on the entire surface layer 3 so as to be alternately adjacent to each other as a resin region covering the entire thickness of the surface layer 3 of the floor material. Further, as a floor material F3 shown in FIG. 3, it may be formed as a large number of small lump-like resin regions mixed in the entire floor material, or as a large number of small blocks like a floor material F4 shown in FIG. Alternatively, the resin region may be formed in the entire surface layer 3 of the flooring. In any case, the first resin region 1 and the second resin region 2 need to be exposed on the surfaces (upper surfaces) of the flooring materials F1 to F4. Sex cannot be demonstrated.

  The area ratio between the first resin region 1 and the second resin region 2 on the floor material surface is preferably 10:90 to 35:65, and if the area ratio is within this range, the slip resistance and the antifouling property are increased. Is demonstrated in a well-balanced manner. When the area ratio of the first resin region 1 is less than 10 and the area ratio of the second resin region 2 is more than 90, although excellent antifouling properties are exhibited, the antiskid property is insufficient and the slippery becomes easy. When the area ratio of the first resin region 1 exceeds 35 and the area ratio of the second resin region 2 is less than 65, excellent anti-slip properties are exhibited, but the anti-stain property is insufficient and it becomes easy to get dirty.

  The flooring materials F1 and F2 in FIGS. 1 and 2 can be obtained by adjusting the volume ratio of the first resin region 1 and the second resin region 2 to 10:90 to 35:65. The area ratio of 1 and 2 is 10:90 to 35:65, and the anti-slip property and the anti-stain property are exhibited in a balanced manner at the same time. On the other hand, in the case of the flooring materials F3 and F4 of FIG. 3 and FIG. 4, the granular material of the resin mixture for forming the small lump-shaped first resin region 1 and the small lump-shaped second resin region 2 are used. Are mixed in a volume ratio of 10:90 to 35:65, and the mixed powder is heat-pressed into a sheet to form the floor material F3 and the floor material F4. Even if the surface layer 3 is produced, the area ratio of the two resin regions 1 and 2 on the floor material surface is not strictly 10:90 to 35:65, but is substantially the same as the above area ratio. The anti-slip and anti-stain properties are also well balanced at the same time.

The planar shape and size of the first resin region 1 and the second resin region 2 are not particularly limited. For example, in the case of the resin regions 1 and 2 having a continuous belt-like planar shape, the width dimension is 1 to In the case of the resin regions 1 and 2 having discontinuous independent planar shapes such as a triangle, a quadrangle, a hexagon, a circle, a rhombus, and an indeterminate shape, the vertical dimension or the horizontal dimension is preferable. Is preferably about 1 to 30 mm. If it does in this way, since both the resin area | regions 1 and 2 of the floor material surface will be stepped on by the shoe sole simultaneously at the time of a walk, anti-slip property and antifouling property will be exhibited simultaneously.
In addition to the first resin region 1 and the second resin region 2, when another functional resin region is further provided, it is preferable to have the same width dimension, vertical dimension, or horizontal dimension as described above.

  In addition, the color of the 1st resin area | region 1 or the 2nd resin area | region 2 is not specifically limited, Although what is necessary is just to color to a desired color, the 1st resin area | region 1 and other functions which are comparatively easy to become dirty It is preferable to color the transparent resin region in a dark color or dark color because dirt is not noticeable.

  The floor material of the present invention as described above is produced by a known molding method such as extrusion molding, hot-press press molding of powder and injection molding, and is in the form of a long floor sheet, floor tile, staircase covering material, etc. It is commercialized.

  For example, when the floor material F1 shown in FIG. 1 is commercialized in the form of a long floor sheet, a resin mixture for forming the first resin region 1 is melted by heating using a multicolor extrusion molding machine. And the resin mixture for forming the second resin region 2 are alternately juxtaposed and continuously extruded into a sheet, or the resin mixture powder for forming the first resin region 1 (regular or amorphous) Pellets and scale-like small lumps) and the powder mixture of the resin mixture for forming the second resin region 2 (regular or irregular pellets or scale-like lumps) are divided into regions on the conveyor belt. And then sprayed to a certain thickness and continuously formed into a sheet by hot pressing. On the other hand, when producing products in the form of tile-like flooring, the long floor sheet obtained by the above method is cut into tiles, or a multicolor injection molding machine is used to heat and melt. The resin mixture for forming the first resin region 1 and the resin mixture for forming the second resin region 2 may be manufactured by injection molding in a tile-shaped mold.

  Further, the floor material F2 shown in FIG. 2 is a back layer on the back side of the floor material obtained by, for example, the above-described multi-color extrusion molding, hot-press press molding of a granular material, multi-color injection molding, etc. 4 or by using a multi-color extrusion molding machine, the resin mixture for forming the first resin region 1 and the resin mixture for forming the second resin region 2 which are heated and melted are alternately arranged in parallel. At the same time as the sheet is extruded, while the lower layer is extruded with two layers of the resin mixture for forming the back surface layer 3, or the above-mentioned powder pressing method is applied to the conveyor. The powder of the resin mixture for forming the first resin region 1 and the powder of the resin mixture for forming the second resin region 2 are formed on the particles of the resin mixture for forming the back surface layer 4 dispersed on the belt. What is necessary is just to manufacture by dividing and spraying a granule for every area | region and carrying out hot-pressing.

  Moreover, the floor material F3 shown in FIG. 3 employs a hot-press press molding method of granular material, and the granular material (pellet-shaped or small-lumped shape) of the resin mixture for forming the small first-shaped resin region 1 is used. (Mixed powder particles) and the powder particles (pellet-shaped or small lump particles) of the resin mixture for forming the second resin region 2 in a small lump shape are uniformly mixed on the conveyor belt. What is necessary is just to manufacture by spraying to a fixed thickness and continuously forming into a sheet form by a hot press.

  Further, the floor material F4 shown in FIG. 4 employs a hot-press molding method of granular material so that the granular material of the resin mixture for forming the back surface layer 4 and the above mixed granular material are placed on the conveyor belt. What is necessary is just to manufacture by carrying out the superposition | spreading on a layer and continuously forming in a sheet form with a hot press.

As described above, in the flooring of the present invention, since the first resin region 1 includes the vinyl chloride resin and the polyurethane-based thermoplastic elastomer as the main component resins, the first resin region 1 is made of the polyurethane-based thermoplastic elastomer. Rubber elastic physical properties are added to the first resin region 1 so that the first resin region 1 exhibits an excellent anti-slip action. In particular, when the polyurethane thermoplastic elastomer is compatible with the vinyl chloride resin, the slip resistance is further improved. Therefore, the slipperiness of the flooring is improved even if the unevenness for slipping is not formed on the flooring surface, so that the risk of a pedestrian slipping and falling is reduced, and the dust and dirt on the flooring surface are reduced. Easy to clean.
Moreover, since the second resin region 2 contains hard particles in a vinyl chloride resin, the floor material of the present invention makes it difficult for scratches to enter the second resin region 2 due to the hard particles, and the dirt substance. Becomes difficult to adhere, and even if it adheres, it can be easily removed by washing or the like, and the antifouling property of the flooring is improved. In particular, when the second resin region 2 contains an ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer, the plasticizer that causes dirt adhesion bleeds out due to the entanglement of molecules by the vinyl chloride side chain. In addition, since the surface of the second resin region 2 is less likely to be scratched, the antifouling property is further improved.
Thus, since the flooring of the present invention has at least the first resin region 1 with good anti-slip property and the second resin region 2 with good anti-smudge property on the floor material surface, good anti-slip property and good When the area ratio of the first resin region 1 to the second resin region 2 on the floor material surface is 10:90 to 35:65, Antifouling properties will be exhibited in a well-balanced manner.

  Next, a performance evaluation test conducted to confirm the effect of the present invention will be described.

[Preparation of flooring specimen]
The granular material (average particle size 1.3 to 1.5 mm) of the resin mixture for forming the first resin region having the composition shown in Table 1 below, and the second resin region formation having the composition shown in Table 2 below. Granules (a), (b), and (c) of the resin mixture for use (all average particle diameters of 1.0 to 1.2 mm) were granulated.

Table 1 below shows the first resin region-forming particles shown in Table 1 and the second resin region-forming particles (a), (b) or (c) shown in Table 2. A method of mixing uniformly in a weight ratio, spraying the mixed powder particles on the support surface to a uniform thickness and hot pressing (hereinafter referred to as the first method in Table 3), or a second resin Region-forming granular material (a), (b) or (c) is evenly spread on the support surface, and the first resin-region-forming granular material is uniformly dispersed on the hot press. The thickness in which the small lump-shaped first resin region and the small lump-shaped second resin region (a), (b) or (c) are uniformly mixed by the manufacturing method (described in Table 3 below as the second manufacturing method) 2.5 mm thick flooring specimens (No. 1 to 5, 7, 9, 11 to 14) and non-uniformly mixed 2.5 mm thick flooring specimens (No. 6, 8, 10) Was made.
For comparison, only the second resin region forming powder (a) is sprayed on the support surface to a uniform thickness and hot-pressed to form only the second resin region. A flooring specimen (No. 15) having a thickness of 2.5 mm was produced.
The hot press was performed under the conditions of a heating temperature of 190 ° C., a heating time of 10 minutes, a pressure of 10 MPa, a pressing time of 5 minutes, and a standing time of 10 minutes.

[Performance evaluation test]
About said flooring material test piece (No. 1-15), while evaluating slip resistance, antifouling property, and a softness | flexibility by the following method, the presence or absence of the curvature of a flooring material test piece was investigated.
That is, 18 unspecified people wearing hard-shoe shoes walk on a wet flooring test piece and evaluate the anti-slip property, anti-stain property, and flexibility in 7 levels sensuously. 7 points when evaluated, 6 points when evaluated as good, 5 points when evaluated as slightly good, 4 points when evaluated as normal, 3 points when evaluated as slightly bad, rated as very bad The average score was calculated for each of the anti-slip property, antifouling property and flexibility, and was rounded off and expressed as 1 to 7 points. Further, the presence or absence of warping of the flooring specimen was examined by observing with the naked eye. These results are listed in Table 3 below.

  From Table 3, by the first manufacturing method, it was produced by hot-pressing a uniform mixed granular material of the granular material for forming the first resin region and the granular material for forming the second resin region. Since the floor material test pieces (Nos. 1 to 5, 7, 9, 11 to 14) are uniformly mixed with a small lump-shaped first resin region and a small lump-shaped second resin region, The coefficients of thermal expansion on the back side are almost equal, and therefore no warpage is observed. On the other hand, the floor produced by spraying the powder for forming the first resin region on the second powder for forming the resin region by the second manufacturing method and hot pressing. In the material test piece (No. 6, 8, 10), most of the back side is occupied by a small second resin region, and most of the front side is occupied by a small first resin region. Warpage occurs due to the difference in coefficient of thermal expansion between the back side and the front side.

  Moreover, since the floor material test piece (No.6,8,10) produced by the 2nd manufacturing method occupied most on the surface side by the 1st resin area | region of a lump shape, slip resistance is 6-7. Is excellent with respect. However, when these flooring specimens (No. 6, 8, 10) and the flooring specimens (No. 3, 7, 9) produced by the first manufacturing method are compared, the flooring specimen (No. .6, 8, 10) and flooring specimens (Nos. 3, 7, 9) are both composed of the first resin region forming powder and the second resin region forming powder. Although the blending ratio (weight ratio) is the same, the flooring specimen (No. 6, 8, 10) is smaller on the surface than the flooring specimen (No. 3, 7, 9). Since the area ratio occupied by the massive second resin region is small, the antifouling property is reduced by 1 to 2 points. From this, it can be seen that it is important to uniformly mix the small lump-shaped first resin region and the small lump-shaped second resin region in order to exhibit the anti-slip property and the antifouling property with good balance.

In addition, among the floor material test pieces produced by the first manufacturing method, in which the small lump-shaped first resin region and the small lump-shaped second resin region are uniformly mixed, powder particles for forming the first resin region Floor material test piece (No. 2-5, 7, 9, 11, 12) in which the weight ratio of the body and the powder for forming the second resin region is in the range of 10:90 to 35:65, Floor material test pieces (No. 2-5, 7, 7) in which the area ratio of the small resin-like first resin region and the small resin-like second resin region on the surface is in the range of about 10:90 to about 35:65. 9,11,12) have received a pass evaluation of 4 points or more (normal or higher) for anti-slip and anti-stain properties, and also received a pass evaluation of 4 points or more for flexibility.
On the other hand, the floor material test piece (No. 1) having a weight ratio of the powder for forming the first resin region to the powder for forming the second resin region of 5:95 is anti-slip and flexible. The weight ratio of the powder for forming the first resin region to the powder for forming the second resin region is 40:60 (area ratio). Is a flooring specimen (No. 13) having a weight ratio of 45:55 (area ratio is substantially 45:55), Both antifouling property and anti-slip property have been evaluated as rejected with 3 points or less.
From this, in order to exert a good balance of anti-slip and anti-stain properties and even flexibility, the area ratio between the small lump first resin region and the small lump second resin region in the flooring surface Is estimated to be between 10:90 and 35:65.

  Moreover, when the flooring material test piece (No. 3, 4, 5) from which the composition of the granular material for 2nd resin area | region formation differs is compared, as a granular material for 2nd resin area | region formation, a resin component is A flooring specimen (No. 3) using a granular material (a), which is a mixed resin in which 80 parts by mass of a vinyl chloride resin is mixed with 20 parts by mass of an ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer, As the second resin region-forming powder, the resin component is only 100 parts by mass of vinyl chloride resin, and a total of 40 masses of phthalic acid and PET plasticizers. The floor material test piece (No. 4) using the partly blended granular material (b) has received 5 points of antifouling property, and the resin as a granular material for forming the second resin region Powders containing only 100 parts by weight of vinyl chloride resin and 40 parts by weight of phthalic plasticizer c) flooring specimens with (No.5), the antifouling property is evaluated by the four points. Therefore, ethylene-vinyl acetate copolymer-vinyl chloride graft copolymer is a resin that greatly contributes to the improvement of antifouling properties, and PET plasticizers also contribute to the improvement of antifouling properties. It can be seen that the plasticizers have a negative effect on the antifouling properties.

  In addition, although the flooring test piece (No. 15) produced only by the granular material for forming the second resin region is excellent in antifouling property with 7 points, it is natural that the antislip property is 1 point. It is slippery and has one point of flexibility and is inferior in bending workability.

  Next, in order to know the performance (physical properties) of the first resin area itself, a slip test, a taber antifouling test, and an abrasion resistance test performed on a flooring specimen consisting only of the first resin area. Will be described.

[Anti-slip test]
By preparing 13 types of resin mixtures for forming the first resin region having the composition described in Table 4 below, each resin mixture was formed into a sheet shape, so that the whole was formed with the first resin region. Thirteen kinds of flooring specimens (Nos. 16 to 28) having a thickness of 1.5 mm were produced.
Based on the test method of JIS A 1407, the slip resistance coefficient at the time of drying and the slip resistance coefficient at the time of wetness of each flooring specimen (No. 16 to 28) were determined and shown in Table 4 below.

[Taber antifouling test]
In accordance with the dirt test of JIS L 1023-1992, the floor material test pieces (No. 16 to 28) are sequentially attached to a Taber abrasion tester to which a load of 750 gf is applied, and the floor material test is performed with a rubber roll to which abrasion paper is attached. After the piece was rotated and worn 200 times, the worn paper was removed and the deposits on the flooring test piece were removed. Next, the sample was rotated 80 times while dropping the standard pollutant onto the floor specimen, and then the standard pollutant was stopped falling and rotated 20 more times. Then, remove the floor test piece from the Taber abrasion tester, lightly wipe the entire surface of the test piece 7-8 times with a dry cloth, and further 3-4 times the half of the floor test piece with a wet cloth. After lightly wiping, the color difference before and after the test was measured using a color difference meter for the dry wipe portion and the water wipe portion of the flooring specimen, and ΔE was measured. The results are shown in Table 4 below.

[Abrasion resistance test]
In accordance with JIS A 1453, the above flooring test pieces (No. 16 to 28) were sequentially attached to a Taber abrasion tester to which a load of 250 gf was applied, and the test piece was rotationally worn with a rubber roll to which an abrasion paper was attached, The number of revolutions required to wear 1 mm was calculated from the amount of wear. The results are shown in Table 4 below.

From Table 4, for the formation of the first resin region comprising a vinyl chloride resin and a polyester polyurethane thermoplastic elastomer compatible with the vinyl chloride resin as a main component resin and a plasticizer and a stabilizer. The flooring specimens (Nos. 17-22, Nos. 24-28) molded with the resin mixture of No. 1 each have a slip resistance coefficient at the time of drying of 0.8 or more, and the slip resistance at the time of drying. Is found to be good. Moreover, it turns out that the rotation speed required for 1 mm abrasion is 120 * 10 < ² > times or more of an acceptable value, and abrasion resistance is also favorable.

  Moreover, the floor-material test piece (No.17-22, No.24-27) in which the polyester type polyurethane-based thermoplastic elastomer compatible with the vinyl chloride resin occupies 15 to 45% by mass of the main component resin In any case, the slip resistance coefficient when wet is 0.4 or more of the acceptable value, and the slip resistance when wet is good. On the other hand, in the floor material test piece (No. 28) in which the polyester-type polyurethane-based thermoplastic elastomer occupies 60% by mass of the main component resin, the slip resistance coefficient when wet falls below the acceptable value of 0.4. In addition, the flooring test piece (No. 16) which does not contain the polyurethane-based thermoplastic elastomer has a slip resistance coefficient at the time of drying which is less than the acceptable value of 0.8. Therefore, in order to demonstrate good slip resistance when the slip resistance coefficient is above the acceptable value both during drying and when wet, the blending amount of the polyester polyurethane thermoplastic elastomer compatible with the vinyl chloride resin should be It can be estimated that the content may be 10 to 50% by mass of the main component resin.

On the other hand, a floor material test piece (No. 23) molded from a resin mixture containing a polyether type polyurethane-based thermoplastic elastomer and a vinyl chloride-based resin, which are incompatible with the vinyl chloride-based resin, is dried. The slip resistance coefficient at the time was 0.42 and the slip resistance coefficient at the time of wetness was 0.20, both of which were about half of the acceptable values, and no improvement in slip resistance was observed. The number of rotations required for 1 mm wear is 100 × 10 ² times, which is below the acceptable value and wear resistance is not good. From this, it can be seen that polyurethane-based thermoplastic elastomers that are not compatible with vinyl chloride-based resins do not contribute to improvement of anti-slip properties and wear resistance.

  Further, a floor material test piece (No. 17, No. 17) molded from a resin mixture containing a linear vinyl chloride resin and a polyester urethane thermoplastic elastomer compatible with the resin as a main component resin. 18) is that the slip resistance coefficient when wet is an acceptable value (0.4 or more), but it is less than 0.5 and not so high. On the other hand, a resin mixture comprising a vinyl chloride resin having a branched chain and a polyester urethane thermoplastic elastomer compatible with the resin as a main component resin (the elastomer is 15 to 45% by mass of the main component resin) No. 19-22, No. 24-27, all of the flooring test specimens molded with a high resistance value of 0.5 or more when being wet, and anti-slip when wet The property is further improved. From this, it can be seen that the vinyl chloride resin having a branched chain contributes to the improvement of the slip resistance, particularly when wet. In addition, when comparing flooring specimens (No.17, No.18, No.19), flooring specimens (No.17, No.18) using linear vinyl chloride resin were dried. While the slip resistance coefficient at the time is less than 1, the floor material test piece (No. 19) using the vinyl chloride resin having a branched chain shows a high value of the slip resistance coefficient at the time of drying of 1 or more. From this, it can be seen that the vinyl chloride resin having a branched chain is effective not only in the wet state but also in improving the anti-slip property in the dry state.

No. The floor material test pieces other than 17 floor material test pieces all have a Taber antifouling ΔE in the acceptable value range, and in particular, are polyether-type polyurethane thermoplastic elastomers that are not compatible with vinyl chloride resin. The floor material test piece (No. 23) using JIS has not passed the slip resistance coefficient and the abrasion resistance, but the Taber antifouling property ΔE is much smaller than other floor material test pieces, Excellent soiling. This is because even if an incompatible polyether-type polyurethane-based thermoplastic elastomer is mixed with vinyl chloride resin, it does not mix and phase, and rubber elastic properties cannot be added, resulting in fine scratches on the surface. This is considered to be difficult.
In addition, No. Although the anti-slip property of the floor material test piece 17 was within the range of the acceptable value, ΔE slightly deviated from the acceptable value because a linear vinyl chloride resin having a number average molecular weight of 1030 was used. This is thought to be because the scratches were easily attached.

Next, in order to investigate the influence of the plasticizer, as shown in Table 5 below, five types of resin mixtures for forming the first resin region in which the blending amount of the plasticizer was changed were prepared, and each resin mixture was prepared as a sheet. By extruding into a shape, five types of floor material test pieces (No. 29 to 33) having a thickness of 1.5 mm, which were formed entirely in the first resin region, were produced.
These flooring specimens (Nos. 29 to 33) were subjected to a slip resistance test, a Taber stain resistance test, and an abrasion resistance test in the same manner as described above, and the results are shown in Table 5 below.

From Table 5, as the plasticizer content increases, the slip resistance coefficient when dry and wet increases, the ΔE of the taber antifouling property for dry and water wipe increases, and the number of rotations required for 1 mm wear also increases. ing. From this, it can be seen that the plasticizer is effective in improving anti-slip properties, anti-stain properties, and abrasion resistance.
And the flooring test piece (No. 30-32) in which the plasticizer / vinyl chloride resin ratio is in the range of 0.29 to 0.86 has a slip resistance coefficient and a Taber antifouling ΔE of 1 mm. The number of revolutions required for abrasion is also within the range of acceptable values, whereas the flooring specimen (No. 29) with a plasticizer / vinyl chloride resin ratio of 0.21 has a slip resistance coefficient during drying. The floor material test piece (No. 33) having a plasticizer / vinyl chloride resin ratio of 1.14, which is below the acceptable value, has a Taber antifouling ΔE of both dry and water wipes. Out of range of acceptable values. From this, in order to exhibit good anti-slip properties, Taber antifouling properties, and abrasion resistance, the plasticizer / vinyl chloride resin ratio is in the range of 0.25 to 0.9. Then, it is estimated that it is necessary to mix | blend a plasticizer so that it may become 25-90 mass parts with respect to 100 mass parts of vinyl chloride-type resin.

  Next, in order to know the performance (physical properties) of the second resin region itself, a Taber antifouling test, a flexibility test, and an abrasion resistance test conducted on a flooring specimen consisting only of the second resin region. Will be described.

28 types of resin mixtures for forming the second resin region having the compositions shown in Table 6 and Table 7 below (prepared with 6.5 parts by mass of stabilizer) were prepared, and each resin mixture was formed into a sheet. By molding, 28 kinds of flooring specimens (No. 34 to 61) having a thickness of 2 mm, which were formed entirely in the second resin region, were produced.
The ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer A used here contains 41% by mass of the ethylene / vinyl acetate copolymer component (8.6% by mass of the vinyl acetate component) in the graft copolymer. Is. However, the floor material test piece (No. 37, 44) is an ethylene / vinyl acetate copolymer containing 10% by mass of ethylene / vinyl acetate copolymer component (7.7% by mass of vinyl acetate component) in the graft copolymer. A coalescence-vinyl chloride graft copolymer B was used.

And about each flooring material test piece (No. 34-61), while carrying out the same as the above-mentioned Taber antifouling property test, it measures ΔE at the time of dry wiping and water wiping, and the above-mentioned abrasion resistance test In the same manner as above, the number of rotations required for 1 mm wear was calculated, and these results are shown in Tables 6 and 7 below.
Further, according to the tensile test of JIS K 6251, the tensile properties at 23 ° C. of each flooring specimen (No. 34 to 61) were measured under the conditions of a tensile speed of 100 mm / min and a distance between chucks of 70 mm. The 10% modulus (M10) at 23 ° C. and the elongation at break (Lb) were determined from the tensile characteristic curves, and the results are shown in Tables 6 and 7 below. Further, in the same manner as above except that the temperature of the test chamber was changed to 0 ± 2 ° C., 10% modulus (M10) at 0 ° C. of each flooring specimen (No. 34 to 61) and elongation at break ( Lb) was determined and the results are shown in Tables 6 and 7 below.
In Tables 6 and 7 below, some flooring specimens are shown redundantly for easy comparison of the test results.

From Tables 6 and 7, flooring test in which the whole was formed with a resin mixture for forming a second resin region comprising a vinyl chloride resin and an ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer as a main resin. Each of the pieces (Nos. 37 to 57) has a Taber antifouling ΔE in the case of dry wiping being an acceptable value (4.5 or less), and the Taber antifouling ΔE in the case of water wiping is also an acceptable value ( 4.0 or less) and it can be seen that it has excellent Taber antifouling properties.
On the other hand, flooring specimens (Nos. 34 to 36) made of a resin mixture containing only a vinyl chloride resin as a resin component and not containing an ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer, The Taber antifouling ΔE in the case of dry wiping is not an acceptable value (4.5 or less), and the flooring specimen (No. 34) also has an acceptable value for the Taber antifouling ΔE in the case of water wiping (No. 34) 4.0 or less), which indicates that the anti-Taber antifouling property is poor.
Also, a floor made of a resin mixture for forming a second resin region, which contains vinyl chloride resin and ethylene / vinyl acetate copolymer as resin components and does not contain ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer. In the case of the material test piece (No. 58 to 61), the Taber antifouling ΔE in the case of dry wiping is not an acceptable value (4.5 or less), and in the case of the floor material test piece (No. 61), The Taber antifouling ΔE is also outside the acceptable value (4.0 or less), indicating that the Taber antifouling property is inferior.
From the above, it is confirmed that the ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer is an extremely effective resin component for improving the Taber antifouling property. In addition, the ethylene / vinyl acetate copolymer itself is inferior in compatibility with the vinyl chloride resin, so it does not contribute to the improvement of the Taber antifouling property, and the floor material test piece (No. 58 to 61) is compared. As can be seen, as the blending amount of the ethylene / vinyl acetate copolymer increases, the Taber antifouling property decreases.

The main component is a vinyl chloride resin and an ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer, and the content of the ethylene / vinyl acetate copolymer component in the resin component is 1.5 to 20.0 mass%. % Of the flooring specimens (Nos. 38 to 48, 50 to 57) made of the resin mixture for forming the second resin region of 4% have a Taber antifouling ΔE of 4. It can be seen that ΔE of the Taber antifouling property in the case of wiping with water is further reduced to 3.5 or less, and further excellent Taber antifouling property is exhibited.
However, a flooring test piece (No. 37) made of a resin mixture for forming a second resin region in which the content of the ethylene / vinyl acetate copolymer component in the resin component is 1.0% by mass, The floor material test piece (No. 49) made of the resin mixture for forming the second resin region in which the content of the ethylene / vinyl acetate copolymer component in the resin component is 22.6% by mass is dry wiped. The Taber antifouling ΔE in the case and the Taber antifouling ΔE in the case of water wiping are 4.1 and 4.5, respectively, which are acceptable values, but are floor test specimens (No. 38 to 48, 50). It can be seen that the anti-taber antifouling property is slightly inferior to -57).
From this, it is proved that the content of the ethylene / vinyl acetate copolymer component in the resin component is 1.5-20.0% by mass is effective for further improving the Taber antifouling property. It is done.

In Table 7, when the flooring specimens (No. 42, 50, 51, 40, 52, 53) are compared, the ratio of the polymer type dibasic acid ester plasticizer in the entire plasticizer is 20 to 60 mass. % Flooring test piece (No. 51, 40, 52) is a flooring test piece (No. 42, 50) in which the ratio is less than 20% by mass, or a flooring test in which the ratio is more than 60% by mass. Compared with the piece (No. 53), the Taber antifouling ΔE is low both in the case of dry wiping and in the case of water wiping, and the Taber antifouling property is further improved. And the floor material test piece (No. 42) which does not contain a polymer type dibasic acid ester plasticizer has a breaking elongation (Lb) at 23 ° C. of 148%, which is out of the acceptable value (150% or more), In addition, the floor type test piece (No. 53) in which the polymer type dibasic acid ester plasticizer accounts for 63% by mass of the entire plasticizer is 10% modulus (M10) at 23 ° C. and 0 ° C. ) Is also out of the acceptable value.
From this, adjusting the ratio of the polymer type dibasic acid ester plasticizer in the entire plasticizer to 20 to 60% by mass is intended to further improve the Taber antifouling property and to give good flexibility. Therefore, it is proved that it is extremely effective.

In Table 7, when comparing the floor specimens (No. 43, 54, 40, 55, 56, 57), quartz particles or alumina as hard particles having a Mohs hardness of 6 to 13 in the vinyl chloride resin mixture. The floor material test piece (No. 54, 40, 55, 56) containing 2 to 15 parts by mass of particles with respect to 100 parts by mass of the resin component passes the wear resistance of the floor material test piece (No. 54). Although slightly lower than the value (10,000 times or more / 1 mm), all the other flooring specimens (No. 40, 55, 56) have acceptable values for wear resistance.
On the other hand, the floor material test piece (No. 43) which does not contain quartz particles or alumina particles as hard particles has a wear resistance significantly lower than the acceptable value, and the hard particles exceed 15 parts by mass and 20 masses. The floor material test piece (No. 57) contained excessively with the part significantly improved the abrasion resistance to 13870 times / 1 mm, but 10% modulus (M10) and elongation at break (23 ° C. and 0 ° C.) Lb) deviates from the acceptable value and the flexibility decreases.
From this, inclusion of 2 to 15 parts by mass of hard particles having a Mohs hardness of 6 to 13 with respect to 100 parts by mass of the resin component in the vinyl chloride resin mixture does not reduce the flexibility of the flooring and is resistant to abrasion. It is proved that it is effective for improving.

DESCRIPTION OF SYMBOLS 1 1st resin area | region 2 2nd resin area | region 3 Surface layer 4 Back surface layer F1, F2, F3, F4 Flooring

Claims (5)

  A floor material having at least a first resin region and a second resin region on the floor material surface, wherein the first resin region includes a vinyl chloride resin and a polyurethane thermoplastic elastomer as main component resins. And the second resin region is a resin region in which hard particles are contained in a vinyl chloride resin.   The flooring material according to claim 1, wherein an area ratio of the first resin region and the second resin region on the flooring material surface is 10:90 to 35:65.   The flooring material according to claim 1 or 2, wherein the polyurethane thermoplastic elastomer contained in the first resin region is an elastomer having compatibility with a vinyl chloride resin.   The flooring according to any one of claims 1 to 3, wherein an ethylene / vinyl acetate copolymer-vinyl chloride graft copolymer is further contained in the second resin region.   The flooring material according to any one of claims 1 to 4, wherein the hard particles contained in the second resin region are quartz particles.

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