JP5992766B2 - Non-slip flooring - Google Patents

Description

The present invention relates to a slip resistant floor covering an indoor or outdoor floor or staircase, and more particularly to a slip resistant floor covering having a specific slip resistant resin mixture region.

  As a matter of course, a floor covering an indoor or outdoor floor surface or a staircase is required to have anti-slip properties in order to avoid a risk that a pedestrian slips and falls.

  By the way, as a floor structure having anti-slip property, water permeability and durability, a base material and a floor material provided by bonding a large number of small blocks made of urethane elastomer with a binder and provided above the base material. There has been proposed a floor structure having a layer, in which irregularities are formed on the upper surface of the flooring layer, and a small gap is formed between the small blocks (Patent Document 1).

  The floor structure of this patent document 1 employs a non-slip conventional means of forming irregularities on the upper surface of the flooring layer to improve the anti-slip property and to form a small gap between the small blocks to provide drainage. In addition, a flooring layer is formed with a small lump of urethane elastomer to impart durability.

  Further, many conventional floor coverings for floors and stairs are provided with anti-slip properties by forming fine irregularities on the upper surface of the flooring like the flooring layer having the above floor structure.

JP-A-6-229106

  However, in the floor structure of Patent Document 1 such as a flooring layer or a conventional flooring material that has an anti-slip property by forming fine irregularities on the upper surface, dust or dirt tends to accumulate in the recesses on the upper surface. There was a problem that it was difficult to clean and dust. In addition, there is also a problem that the convex portions on the upper surface wear out in a relatively short period of time and the slip resistance is lowered.

  The present invention has been made under the circumstances described above, and provides a flooring material that improves not only the anti-slip property during drying but also the anti-slip property when wet by means completely different from the conventional anti-slip method of forming irregularities. The purpose is to do. In a preferred embodiment, the object is to improve antifouling property and wear resistance in addition to antislip property.

In order to achieve the above object, an anti-slip floor material according to the present invention is a floor material having a region of an anti-slip resin mixture, the resin mixture comprising a vinyl chloride resin having a branched chain, and this branched chain. It is characterized in that it is a mixture containing at least a plasticizer, the main component of which is a polyurethane-based thermoplastic elastomer compatible with the vinyl chloride resin it has . Here, “compatible” means that the polyurethane-based thermoplastic elastomer is apparently mixed with the branched vinyl chloride resin without phase separation.

In the anti-slip flooring material of the present invention, the polyurethane-based thermoplastic elastomer is preferably an ester-type polyurethane-based thermoplastic elastomer obtained by a reaction between polyester and isocyanate.
And it is preferable that the polyurethane-type thermoplastic elastomer occupies 10-50 mass parts among 100 mass parts of main component resin of the said resin mixture.
In a further, the plasticizer is preferably contained in the resin mixture in a ratio of 25 to 90 parts by weight per 100 parts by weight vinyl chloride resin having the branched chain.

Like the anti-slip floor material of the present invention, a vinyl chloride resin having a region of an anti-slip resin mixture, the resin mixture having a branched chain selected from vinyl chloride resins, and the vinyl chloride resin When the main component resin is a polyurethane-based thermoplastic elastomer that is compatible with the resin, the latter polyurethane-based thermoplastic elastomer adds rubber elastic properties to the resin mixture. As shown in the test data to be described later, the slip resistance coefficient during drying of the flooring material according to JIS A 1407 can be obtained even if the surface of the flooring material does not have an anti-slip unevenness. (Slip resistance coefficient when drying a floor material consisting only of the resin mixture area) is 0.8 or more, and a slip resistance coefficient when the floor material is wet (when the floor material consisting only of the resin mixture area is wet) Sliding Next resistance coefficient) is 0.5 or more, the drying time is also a floor material having a good anti-slip at the well when wet. As shown in test data described later, the wear resistance is also improved. As described above, since the anti-slip floor material of the present invention exhibits good anti-slip properties without forming irregularities on the surface, cleaning is easy and dust and dirt can be removed cleanly.

  Polyurethane-based thermoplastic elastomers are broadly classified into ester-type polyurethane-based thermoplastic elastomers and ether-type polyurethane-based thermoplastic elastomers. The latter ether-type polyurethane-based thermoplastic elastomers are compatible with vinyl chloride-based resins. Inferior, hardly contributes to the improvement of anti-slip properties, and inferior in strength and wear resistance as a flooring material. On the other hand, the former ester-type polyurethane-based thermoplastic elastomer is preferably used because it is compatible with vinyl chloride-based resin, and has good strength and abrasion resistance as a flooring material, and also improves anti-slip properties. A big contribution.

In addition, when 100 to 50 parts by mass of the main component resin of the resin mixture accounts for 10 to 50 parts by mass of the polyurethane-based thermoplastic elastomer, as shown in the test data described later, the other of the main component resins has a branched chain. Even in the case of flooring that is a vinyl chloride resin other than the vinyl chloride resin possessed, the sliding resistance coefficient when the flooring is wet (the sliding resistance coefficient when the flooring consisting only of the resin mixture region) is 0.4 or more Thus, even when wet, good slip resistance can be exhibited.

Further, when the plasticizer is contained in the resin mixture at a ratio of 25 to 90 parts by mass with respect to 100 parts by mass of the vinyl chloride resin having a branched chain, as shown in test data described later, not only the anti-slip property but also the taber The flooring material also has good antifouling properties.

It is a schematic sectional drawing of the slip-proof floor material which concerns on one Embodiment of this invention. It is a schematic sectional drawing of the slip-proof flooring which concerns on other embodiment of this invention. It is a schematic sectional drawing of the slip-proof flooring which concerns on other embodiment of this invention. It is a schematic sectional drawing of the slip-proof flooring which concerns on other embodiment of this invention. It is a schematic model sectional drawing of the slip-proof flooring which concerns on other embodiment of this invention.

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

The non-slip flooring material of the present invention comprises a vinyl chloride resin having a branched chain selected from vinyl chloride resins and a polyurethane thermoplastic elastomer compatible with the vinyl chloride resin as a main component resin, It has an area of an anti-slip resin mixture containing at least a plasticizer (hereinafter referred to as an anti-slip area), and varies as illustrated in FIGS. 1 to 5 depending on the distribution state of the anti-slip area. There are embodiments.

  That is, the non-slip floor material F1 of the embodiment illustrated in FIG. 1 is formed by forming the entire floor material F1 in the anti-slip region 1, and the anti-slip floor material F2 of the embodiment illustrated in FIG. The entire region of the layer 2 is formed of the anti-slip region 1 and the back layer 3 is laminated on the back side. The anti-slip floor material F3 of the embodiment illustrated in FIG. 4 and the other functional region 4, and the anti-slip floor material F 4 of the embodiment illustrated in FIG. 4 has the surface layer 2 formed of the anti-slip region 1 and the other functional region 4. Further, the back layer 3 is laminated on the back side, and the anti-slip floor material F5 illustrated in FIG. 5 includes a small lump-shaped anti-slip region 1 and another small block-shaped functional region 4 over the entire floor material F5. It is a thing.

  In addition to these, the surface layer of the flooring is a layer in which a small block-like anti-slip region and other functional regions of a small block are mixed, and the back layer is laminated on the back side thereof. There are various embodiments such as the embodiment in which an intermediate layer is provided between the front surface layer 2 and the back surface layer 3 in the anti-slip floor materials F2 and F4 of FIGS. In addition, the surface of the anti-slip floor material may be smooth, or the floor material surface may be provided with irregularities by embossing.

  The other functional region 4 may be a region having any function other than the anti-slip function, such as antifouling property, abrasion resistance, antistatic property, antibacterial antibacterial property, self-luminous property, and hydrophilic property. A region having a desired function such as property, hydrophobicity, and weather resistance can be provided. Further, the other functional region 4 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. Also good. These functional regions 4 are preferably formed of a mixture mainly composed of a thermoplastic resin compatible with the main component resin of the anti-slip region 1 and fused at the interface with the anti-slip region 1. The anti-slip region 1 and the other functional region 4 may be formed by bonding with a binder or the like.

As one main component resin of the resin mixture forming the anti-slip 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 resins, ethylene - vinyl chloride copolymer, but vinyl chloride resins such as chlorinated vinyl chloride resin can be used, in the present invention, these vinyl chloride resin Of these , a vinyl chloride resin having a branched chain from the most preferred main chain is selectively used.

  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 vinyl chloride resin of the main component resin of the anti-slip region 1, the anti-slip floor material when wet is compared with the case of using a linear vinyl chloride resin. The slip resistance coefficient is further increased. As shown in the test data described later, the slip resistance coefficient when wet is 0.5 or more in the slip resistant floor material composed of only the slip resistant area.

The length and number of branched chains of the vinyl chloride resin having branched chains are qualitatively determined by measuring the number average molecular weight (Mn) and the weight average molecular weight (Mw) by gel permeation chromatography (GPC). From (Mw / Mn), it can also be analyzed quantitatively by ¹³ C NMR.

  The polyurethane-based thermoplastic elastomer, which is another main component resin of the resin mixture that forms the anti-slip region 1, adds rubber-elastic properties to the anti-slip region 1, thereby preventing the anti-slip region 1 from slipping, and thus anti-slip. It mixes in order to improve the anti-slip action of the flooring materials F1 to F5, 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 anti-slip 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 resin mixture to greatly contribute to the improvement of anti-slip properties, it is very preferably used.

  Specific examples of ester-type polyurethane-based thermoplastic elastomers that are compatible with vinyl chloride resins include, for example, those obtained by reacting isocyanates with polyester polyols such as adipates and polycaprolactones. 70A or less is preferably used.

  Said ester type polyurethane-based thermoplastic elastomer occupies 10 to 50 parts by mass out of 100 parts by mass of the main component resin of the resin mixture forming the anti-slip region 1 (in other words, 10 to 50 of the main component resin). It is preferable to occupy a mass%). 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 coefficient during drying of the anti-slip floor material consisting only of the anti-slip region 1 ( JIS A 1407) is 0.8 or more, and the slip resistance coefficient when wet is 0.4 or more, so that the slip resistance when dried 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 plasticizer contained in the resin mixture forming the anti-slip region 1 is not particularly limited, and various known plasticizers, for example, phthalic acid plasticizers such as DOP, phosphoric acid plasticizers, fatty acid resins Use one or more plasticizers selected from the group of known plasticizers such as plasticizers, epoxy plasticizers, non-polymeric plasticizers such as chlorinated paraffin, and polymeric plasticizers. Can do.

The plasticizer is preferably contained in the resin mixture in a proportion of 25 to 90 parts by mass with respect to 100 parts by mass of the vinyl chloride resin having a branched chain. As shown in the data, not only the anti-slip property but also the taber anti-stain property of the floor material is improved. When the content of the plasticizer is less than 25 parts by mass, as shown in the test data described later, the slip resistance coefficient at the time of drying the flooring becomes smaller than 0.8, and the improvement of the slip resistance becomes insufficient. When the content of the plasticizer exceeds 90% by mass, as shown in test data described later, ΔE of the taber antifouling property of the flooring exceeds the range of acceptable values in both cases of dry wiping and water wiping, Improvement in antifouling property is insufficient.

  The resin mixture forming the anti-slip region 1 includes known stabilizers (for example, epoxy-based and Ba / Zn-based stabilizers), processing aids, reinforcing agents, reinforcing materials (for example, glass fibers and resin fibers). Etc.), impact resistance improvers, lubricants and the like may be blended in appropriate amounts.

  The anti-slip region 1 may be formed over the entire floor material like the anti-slip floor material F1 shown in FIG. 1, or the anti-slip region F1 shown in FIG. It may be formed over the entire surface layer 2. Further, like the anti-slip floor material F3 shown in FIG. 3, one or more anti-slip regions 1 and one or more other functional regions 4 may form the entire floor material, or the anti-slip shown in FIG. As in the case of the flooring material F4, the surface layer 2 of the flooring material may be formed by one or more anti-slip regions 1 and one or more other functional regions 4. Further, like the anti-slip floor material F5 shown in FIG. 5, a large number of small-slip-proof areas 1 and a large number of other functional areas 4 may be mixed throughout the floor material. Although not done, a large number of small-slip-proof areas and a large number of other functional areas may be mixed over the entire surface layer of the flooring. In any case, the anti-slip region 1 needs to be exposed on the whole or a part of the surface (upper surface) of the anti-stain floor materials F1 to F5, and exhibits anti-slip properties if not exposed. It is not possible.

  As shown in FIGS. 3 and 4, the entire flooring or the entire surface layer of the flooring is formed of one or more anti-slip areas 1 and one or more other functional areas 4. Or a mixture of a number of small lump-like anti-slip areas 1 and a large number of other small-sized functional areas 4 such as the anti-slip floor material F5 in FIG. The area ratio of the anti-slip region 1 to the floor material surface (upper surface) [ratio of the total area exposed of the anti-slip region 1 to the total area of the surface (upper surface) of the floor material] is preferably 10 to 45%. When the area ratio is less than 10%, the improvement of the slip resistance is not remarkable, and when it exceeds 45%, other functions by the functional region 4 are not sufficiently exhibited. When the other functional region 4 is the above-described antifouling region, it is optimal that the area ratio occupied by the antislip region 1 is about 15% and the area ratio occupied by the antifouling region 4 is about 85%. It is. For example, as in the anti-slip floor material F5 in FIG. 5, a large number of small anti-slip areas 1 and a large number of other functional areas 4 (for example, anti-stain areas) are mixed throughout the floor material. Is a mixture of a resin granule forming a small lump anti-slip region 1 and a resin granule forming a small lump antifouling region 4 in a volume ratio of 15:85. When this mixed powder is hot-pressed into a sheet, the area ratio of the anti-slip area 4 on the floor material surface (upper surface) is approximately 15%, and the area ratio of the anti-stain area 4 is approximately 85%. A certain slip-resistant flooring F5 can be obtained.

  The non-slip floor material of the present invention as described above is produced by a known molding method such as extrusion molding, hot press molding of powder, injection molding, calendar molding, etc., and is used for long floor sheets, floor tiles, and staircase coatings. It is commercialized in the form of materials.

  For example, when the anti-slip floor material F1 shown in FIG. 1 is commercialized in the form of a long floor sheet, an extruder is used to heat and melt the above-mentioned anti-slip resin mixture into a sheet shape. Either continuous extrusion molding, or powder particles of anti-slip resin mixture (regular or irregular pellets or scale-like lumps) are sprinkled on a conveyor belt to a certain thickness, and then hot pressed to form a sheet What is necessary is just to manufacture by carrying out continuous shaping | molding. On the other hand, in the case of producing a product in the form of a tile-like floor material, an injection molding machine is used, and the anti-slip resin mixture is melted by heating and injection-molded into a tile shape, or obtained by the above method. A long floor sheet may be cut into tiles for production.

  Further, the anti-slip floor material F2 shown in FIG. 2 is a back surface on the back side of the anti-slip floor material F1 obtained by, for example, the above extrusion molding, hot-press press molding of powder, injection molding, etc. While laminating layer 3 or using a multi-color extruder, the resin mixture for forming back layer 3 and the anti-slip resin mixture for forming surface layer 2 are heated and melted to form two layers. Continuous extrusion molding, or adopting the above-mentioned hot-press molding method of the granular material, the granular material of the resin mixture for forming the back layer 3 and the granular material of the anti-slip resin mixture for forming the surface layer 2 After the body is spread on the conveyor belt in two layers, the sheet may be continuously formed into a sheet by hot pressing.

  In addition, the anti-slip floor material F3 shown in FIG. 3 uses, for example, a multicolor extrusion molding machine, and the resin mixture for forming the anti-slip region 1 and the resin mixture for forming the other functional region 4 are alternately arranged in the width direction. It is arranged in a continuous extrusion molding method, or adopts a hot press molding method of the above-mentioned granular material, and a resin mixture for forming a non-slip region 1 and a resin for forming another functional region 4 After the powder particles of the mixture are alternately arranged in the width direction and sprayed on the conveyor belt, the mixture may be continuously formed into a sheet by a hot press.

  Further, the anti-slip floor material F4 shown in FIG. 4 has, for example, the anti-slip floor material F3 obtained by the above-described extrusion molding, hot-press press molding of granular materials, etc. as the surface layer 2, and the back layer 3 is provided on the back side thereof. The resin mixture for forming the back surface layer 3 is continuously extruded into a sheet shape by using a multicolor extrusion molding machine, and at the same time, the resin mixture for forming the anti-slip region 1 and the functional region 4 are formed thereon. The resin mixture for forming is alternately arranged and continuously extruded into a sheet shape, or a hot-press press forming method of the powder is adopted, and the powder of the resin mixture for forming the back layer 3 is transferred to the conveyor belt. The powder mixture of the resin mixture for forming the anti-slip area 1 and the powder mixture of the resin mixture for forming the functional area 4 are alternately arranged and sprayed on the sheet, and the sheet is formed by hot pressing. What is necessary is just to manufacture by shape | molding continuously in a shape.

Moreover, the slip-resistant floor material F5 shown in FIG. 5 adopts, for example, a hot-press press forming method of powder particles, and the powder particles (pellet-shaped or small-bulb shape) of the resin mixture for forming the small-block-shaped slip-resistant region 1 Of the resin mixture for forming the functional area 4 in the form of a small lump (pellet-like or small lump-like powder) is uniformly mixed on the conveyor belt. After spraying to a certain thickness, the sheet may be continuously formed into a sheet by hot pressing.
In addition, when manufacturing the antifouling floor material which laminated | stacked the back surface layer on the back surface of this antifouling floor material F5, the hot-press press molding method of a granular material is employ | adopted, and the resin mixture for back surface layer shaping | molding What is necessary is just to manufacture by carrying out the continuous formation in a sheet form by hot-pressing, a powder body and said mixed powder body are sprinkled on a conveyor belt in two layers.

In the anti-slip flooring material of the present invention, the resin mixture in the anti-slip region 1 is composed mainly of a vinyl chloride resin having a branched chain and a polyurethane-based thermoplastic elastomer compatible with the vinyl chloride resin. Since the polyurethane-based thermoplastic elastomer accounts for 10 to 50% by mass of the main component resin, the rubber-based physical property is added to the resin mixture in the anti-slip region 1 by the polyurethane-based thermoplastic elastomer, and the anti-slip property is obtained. The frictional resistance in the region 1 is increased, and an excellent antiskid action is exhibited. Therefore, even if the anti-slip unevenness is not formed on the floor material surface, as shown in the test data described later, the floor material consisting only of the anti-slip region 1 has a slip resistance coefficient during drying based on JIS A 1407. 0.8 or more, wet slip resistance coefficient of 0.5 or more (however, 0.4 or more for flooring materials using vinyl chloride resin other than branched vinyl chloride resin as the main component resin) Higher, it exhibits excellent anti-slip properties and improved wear resistance. As described above, since the anti-slip floor material of the present invention exhibits excellent anti-slip properties without forming anti-slip irregularities on the surface, cleaning is easy and dust and dirt can be removed cleanly.
Further, anti-slip floor material of the present invention, in the resin mixture of slip resistant regions 1, since the plasticizer is contained in such a proportion of 25 to 90 parts by weight per 100 parts by weight vinyl chloride resin As shown in the test data described later, not only the slip resistance but also the Taber stain resistance are improved.

  Next, tests conducted to confirm the effects of the present invention will be described.

[Anti-slip test]
13 different resin mixture having the composition set forth in Table 1 below were prepared by molding each of the resin mixture into a sheet, 13 kinds of thickness 1.5mm entire flooring is formed by slip resistant region Test pieces (No. 1 to No. 13) of non- slip flooring were prepared.
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 test piece (No. 1 to No. 13) were determined and shown in Table 1 below.

[Taber antifouling test]
According to the dirt test of JIS L 1023-1992, the above test pieces (No. 1 to No. 13) are sequentially attached to a Taber abrasion tester to which a load of 750 gf is applied, and the test piece is attached with a rubber roll to which an abrasion paper is attached. After 200 times of rotational wear, the worn paper was removed and the deposits on the test piece were removed. Next, the sample was rotated 80 times while dropping the standard contaminant on the test piece, and then the sample was further rotated 20 times after stopping the fall of the standard contaminant. Then, remove the test piece from the Taber abrasion tester, lightly wipe the entire surface of the test piece 7-8 times with dry waste, and further wipe lightly the half of the test piece 3-4 times with wet cloth. Then, 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 test piece, and ΔE was measured. The results are shown in Table 1 below.

[Abrasion resistance test]
According to JIS A 1453, the above test pieces (No. 1 to No. 13) are sequentially attached to a Taber abrasion tester to which a load of 250 gf is applied, and the test piece is rotationally worn with a rubber roll to which an abrasion paper is attached. The number of revolutions required to wear 1 mm was calculated from the amount of wear. The results are shown in Table 1 below.

According to Table 1, a floor molded from a resin mixture containing 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 test pieces (Nos. 2 to 7, Nos. 9 to 13) of the materials all have a slip resistance coefficient at the time of drying of 0.8 or more, which indicates that the slip resistance at the time of drying is 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 test piece (No.2-7, No.9-12) 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 either 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, the test piece (No. 13) in which the polyester-type polyurethane-based thermoplastic elastomer occupies 60% by mass of the main component resin has a slip resistance coefficient when wet that is lower than the acceptable value of 0.4, Moreover, as for the test piece (No. 1) which does not contain a polyurethane-type thermoplastic elastomer, the slip resistance coefficient at the time of drying is less than the acceptable value 0.8. For this reason, in order to obtain a flooring that exhibits good slip resistance with a slip resistance coefficient equal to or higher than the acceptable value both during drying and when wet, a polyester polyurethane thermoplastic elastomer compatible with vinyl chloride resin It can be estimated that the blending amount should be 10 to 50% by mass of the main component resin.

On the other hand, a flooring specimen (No. 8) molded from a resin mixture comprising a polyether type polyurethane thermoplastic elastomer and a vinyl chloride resin, which are incompatible with the vinyl chloride resin, as main components resin, The slip resistance coefficient at the time of drying is 0.42 and the slip resistance coefficient at the time of wetness is 0.20, both of which are about half of the acceptable values, and no improvement in slip resistance is 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 flooring specimen (No. 2, No. 2) molded from a resin mixture containing a linear vinyl chloride resin and a polyester-type urethane-based thermoplastic elastomer compatible with the resin as a main component resin. In 3), although the slip resistance coefficient when wet is an acceptable value (0.4 or more), 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-type urethane-based thermoplastic elastomer compatible with the resin as a main component resin (the elastomer comprises 15 to 45% by mass of the main component resin). The test pieces (Nos. 4-7, Nos. 9-12) of the flooring material of the present invention molded by the present invention all show a high numerical value with a sliding resistance coefficient of 0.5 or more when wet. The slip resistance at the time 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. Moreover, when the test pieces (No. 2, No. 3, No. 4) are compared, the test pieces (No. 2, No. 3) using the linear vinyl chloride resin have a slip resistance coefficient during drying. The test piece (No. 4) using a vinyl chloride resin having a branched chain has a high slip resistance coefficient of 1 or more at the time of drying. It can be seen that the vinyl chloride resin having a chain is effective for improving the slip resistance not only when wet but also when dry.

No. All the test pieces other than the test piece 2 have a Taber antifouling property ΔE in the range of acceptable values. From this, the anti-slip flooring material of the present invention may have a good Taber antifouling property. I understand. In particular, the test piece (No. 8) using a polyether-type polyurethane-based thermoplastic elastomer that is not compatible with a vinyl chloride resin does not pass the slip resistance coefficient or the wear resistance, but the Taber antifouling property. The property ΔE is far smaller than other test pieces and is excellent in antifouling property. 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.
No. Although the anti-slip property of the test piece 2 was within the acceptable value range, ΔE slightly deviated from the acceptable value because a linear vinyl chloride resin having a number average molecular weight of 1030 was used, so that fine scratches were observed on the surface. This is thought to be because it became easier to attach.

Next, in order to investigate the influence of the plasticizer, as shown in Table 2 below, by preparing the five types of resin mixture in which the amount of plasticizer was changed, by extruding each resin mixture into a sheet shape, entire flooring was manufactured five antifouling flooring thick test piece 1.5mm formed by slip resistant region (No.14~No.18).
These test pieces (No. 14 to No. 18) were subjected to a slip resistance test, a Taber antifouling test, and an abrasion resistance test in the same manner as described above, and the results are shown in Table 2 below.

From Table 2, as the amount of plasticizer increases, the slip resistance coefficient during drying and wetting increases, the ΔE of anti-taber stain resistance for dry and water wiping also increases, and the rotational speed 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 test piece (No.15-17) in which the ratio of the plasticizer / vinyl chloride resin having a branched chain is in the range of 0.29 to 0.86 has a slip resistance coefficient, a Taber antifouling property ΔE, The number of revolutions required for 1 mm wear is within the range of acceptable values, whereas the test piece (No. 14) having a plasticizer / branched vinyl chloride resin ratio of 0.21 has a slip resistance during drying. The test piece (No. 18) whose coefficient is less than the acceptable value and whose plasticizer / branched vinyl chloride resin ratio is 1.14 is wiped with water even when the Taber antifouling ΔE is dry wiped. In the case of, it is out of the acceptable value range. From this, in order to obtain a flooring material having a good anti-slip property, Taber antifouling property and abrasion resistance, the ratio of the plasticizer / vinyl chloride resin having a branched chain is in the range of 0.25 to 0.9. In other words, in other words, it is estimated that the plasticizer needs to be blended in an amount of 25 to 90 parts by mass with respect to 100 parts by mass of the vinyl chloride resin having a branched chain .

DESCRIPTION OF SYMBOLS 1 Anti-slip area | region 2 Front surface layer 3 Back surface layer 4 Other functional area | region F1, F2, F3, F4, F5 Anti-slip floor material

Claims (4)

A flooring having an area of anti-slip resin mixture,
The resin mixture, a vinyl chloride resin having a branched chain, that the polyurethane-based thermoplastic elastomer is compatible with the vinyl chloride resin having the branched as a main component resin is a mixture containing at least a plasticizer Non-slip flooring characterized by   The anti-slip floor material according to claim 1, wherein the polyurethane-based thermoplastic elastomer is an ester-type polyurethane-based thermoplastic elastomer obtained by a reaction between polyester and isocyanate.   The anti-slip flooring material according to claim 1 or 2, wherein the polyurethane thermoplastic elastomer occupies 10 to 50 parts by mass of 100 parts by mass of the main component resin of the resin mixture. The plasticizer, in any one of claims 1 to claim 3, characterized in that contained in the resin mixture in a ratio of 25 to 90 parts by weight per 100 parts by weight vinyl chloride resin having the branched Non-slip flooring as described.

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