JPS60164549A - Non-slip floor material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a non-slip plastic flooring that is durable, has a substantially smooth surface and is stain resistant.

Conventional flooring materials with smooth surfaces have been slippery when wet with water or oil, making it dangerous to walk on.

Therefore, research has been conducted on flooring materials with anti-slip properties, but these can be achieved by, for example, mechanically embossing the surface, embedding small sand or granules only in the surface layer, or using variable or compressible elastic rubber particles. The bodies were randomly arranged in a matrix.

However, a flooring material having an uneven pattern formed by embossing has the drawback that it is easily soiled due to sand, dirt, dust, etc. being buried in the recessed portions.

For example, U.S. Pat. No. 8.227.604, U.S. Pat.
No. 9.797 and No. 4.886.298 disclose flooring materials in which small sand and granules are buried or arranged in the surface layer, but these lose their non-slip function when the surface layer is worn away by walking. However, it has the disadvantage of a short lifespan in areas with heavy foot traffic.

If small sand is still used, there is also the problem of damaging the calender rolls.

U.S. Pat. No. 8,080,251 describes a sheet-like article in which a large number of discontinuous, non-adhesive, elastic particles are randomly arranged in an essentially continuous, easily deformable, rubbery matrix. However, one grain is not exposed, and the grain has a drawback that it has lower wear resistance than the matrix layer and is easily peeled off because it is non-adhesive.

Further, U.S. Pat. No. 8,267,187 describes a method for sheeting a dry blend of thermoplastic resin granules and compressible thermoset rubber granules to produce a sheet with a woven surface effect. , the average particle size of the rubber granules is l/
It is stated that large clumps of rubbery granules are preferred because large, thin, flat chips of 16 to 1/4 inches (1,6 to 64 inches) reduce the weave effect.

Therefore, since the ratio of rubber granules in the sheet-like material is very large, it does not exhibit non-slip properties even if the surface is abraded, and provides a floor tile material that has the effect of simply being covered with various types of woven fabric or pebbles. It is something to do.

The present invention solves the above-mentioned drawbacks of conventional flooring materials, and provides a plastic flooring material with a substantially smooth surface that is resistant to staining, has excellent durability, and does not lose its non-slip function even when the surface is abraded. The purpose is to That is, the present invention is obtained by mixing and integrating a polyvinyl chloride resin matrix chip with a synthetic resin chip that has a higher softening temperature than the matrix chip and has better abrasion resistance, and the synthetic resin chip has a higher softening temperature than the matrix chip and a synthetic resin chip that has better wear resistance. The gist is a non-slip flooring material that is characterized by being dispersed throughout the entire layer and partially exposed on the surface.

In the present invention, the polyvinyl chloride (abbreviated as PVC) used in the matrix chip is a PVC homopolymer, a combination of vinyl chloride and other monomers, such as evaporated vinyl acetate, ethylene, propylene, acrylic acid, methacrylic acid, or esters thereof. An example is a copolymer. In the present invention, these PV and C are appropriately blended with known additives such as plasticizers, fillers, and heat stabilizers, and are usually processed by known methods such as calendering and extrusion processing at about 150 to 250°C. 01-5ffJ preferably 0.3-8Ill
It is formed into a J+ sheet and passed through a pulverizer to create chips.

In the present invention, the PvC matrix chip and the synthetic resin chip are mixed and integrated under heat and pressure to obtain the desired non-slip material 1.

The above-mentioned synthetic resin chip of the present invention is also manufactured into a chip having approximately the same size as the PVC matrix chip by the same method as the PVC matrix chip. The synthetic resin chips are not uniformly compatible with the PvC matrix layer, with only the surface of the chip softening slightly during processing, and the chips remain in their original shape in the matrix layer and are dispersed over the entire thickness. A part of it is exposed on the surface of the matrix layer. Such chips include, for example, acrylic wood such as polymethyl methacrylate 111;
Chips made of polyurethane, nylon resins such as nylon 6 and nylon 66, linear polyesters such as polyethylene terephthalate, and synthetic resins such as ABS resin are preferably used. Furthermore, these chips can be used not only for new materials, but also for example, by crushing plastic waste.

These synthetic resin chips must have a softening point higher than the processing temperature of the PVC matrix resin composition, and the wear resistance of the chips is preferably higher than that of the matrix layer. For example, using a taper set abrasion tester, 5-
5 on each axle of both wheels with 88 abrasive paper adhered to the surface.
When a load of 0.002 was applied and the sample was rotated 1000 times, the amount of wear of the PVC matrix chip and the sheet of synthetic resin chip was measured, and the difference was 50 cm or more, and the difference in wear thickness was 0. .01 ms or more is preferable. The particle size of the chips is 100μ~6 m1JI%
Particularly preferred is a range of 140μ to I. Chips smaller than 100 μm are too fine to provide non-slip properties to the flooring material during walking, and are not preferred.

Preferably, the chips are added in an amount of about 3 weights or more of the total weight of the matrix layer. Although there is no particular upper limit to the amount added, for example, even if it is added in an amount of 80% by weight or more, there is almost no difference in the effect.

A backing material such as a foamed or non-foamed plastic sheet or a woven or nonwoven fabric made of organic or inorganic fibers may be laminated on the back side of the obtained flooring material of the present invention. The thickness of the finished floor covering, including the backing material, is usually about 1 to 10 mm thick, preferably about 10 mm thick.

PvC matrix chips and synthetic resin chips are mixed and filled in Hotsunohike-2 in advance.

The mixed chips 8 are sprinkled from the hopper 2 onto the backing material I guided through the guide roll 4, and the chips 8 are spread at a rate of 0.5 to 10.
A resin layer 5 of s is formed, and if necessary, the matrix chip is made uniform in thickness by a diaphragm 7 equipped with a vibrator 6 under the backing material, heated and softened by a heater 8, and rolled by rolling rolls 9 and 9. The backing material and the surface resin layer are integrated, a finished product is obtained, and the finished product is wound onto a roll 10.

FIGS. 2 and 8 are cross-sectional views of the non-slip flooring material, and l is the backing material.

In FIG. 2, the synthetic resin chip 12 is the matrix chip I at the processing temperature of the PVC matrix resin composition.
Even if heated after mixing with PvC matrix resin, the softening point is higher than the processing temperature of the matrix resin, so only the surface of the synthetic resin chip softens slightly during processing, and they are not uniformly compatible, and the PvC matrix retains the original shape of the chip. distributed throughout the layer,
In addition, a portion of the chip surface is exposed. Also, as mentioned above, after the surface of the chip has softened slightly, PvC
Since it is in close contact with the matrix layer, it is compatible with the matrix layer.

the law of nature FIG. 3 shows the state of the flooring material shown in FIG. 2 after it has been used for a certain period of time.

When the flooring material of the present invention is installed on a subfloor and is actually walked on,
By stepping on the synthetic resin chips exposed on the surface of the PvC matrix layer with shoes, the coefficient of friction increases significantly, preventing continuous slipping and exhibiting excellent non-slip properties. That is, in the flooring material of the present invention, if the synthetic resin chips 12' have greater wear resistance than the PVC matrix chips, the exposed chips 12' will not disappear faster than the matrix 11, and the chips 12' will not disappear faster than the matrix 11. Since the matrix chips 11' are dispersed throughout the entire thickness of the layer, the matrix chips 11' gradually wear out and the chips +2 inside the matrix layer are exposed one after another, and the non-slip properties do not change at all even if the flooring material is used for a long time. In addition, the synthetic resin chip blends well with the matrix layer during processing, and the exposed portion does not peel off when walking. In addition, since the surface is substantially smooth, sand, dirt, dust, etc. do not accumulate, and the beautiful appearance can be maintained for a long time, and even when the flooring material gets wet, it exhibits outstanding non-slip properties.

Furthermore, by appropriately preparing PVC matrix chips and synthetic resin chips in two colors or even more colors, a beautiful mosaic pattern sheet with non-slip properties can be obtained.

Note that a sheet with an inlaid pattern can be obtained by supplying the mixture of PvC matrix chips and synthetic resin chips of the present invention to a rotary screen machine provided with openings in a pattern.

The present invention will be described below with reference to examples. Parts indicate parts by weight.

Example 1 200 parts of PVC matrix resin with the following formulation and particle size 0
．． 2 to 0.5 square chips, and 11 is a thermoplastic polyurethane (softening point 200°C) chip of the same size (
Note 1) Mix 10 parts, fill it in a hot pot, sprinkle it on a glass fiber-containing backing material, and use it on a diaphragm. Ot
It was placed at a thickness of m.

PVC (bottom = +ooo) 100 parts CaC0B 50 parts Stabilizer 2 parts DOP 50 parts Pigment Materials (Note 1) The difference in the amount of wear between the samples in which the PVC matrix layer and the chip were made into sheets is approximately 500119, and the difference in the wear thickness. was Q, 12 Ha.

Next, the polyurethane chips were heated with a heater to a surface temperature of 180°C and then rolled with a rolling roll to form a non-slip floor in which the polyurethane chips were dispersed over the entire thickness of the matrix layer and a portion thereof was exposed on the surface. I got the material.

Example 2 PVC (P=I O, 50) 50 parts PVC (P= 840) 50 parts CaCO 350 parts Stabilizer 2,51 DOP 45 parts Pigment Trace amount PvC matrix with particle size 0.1-05, consisting of the above composition Mix 200 parts of the chips with 20 parts of the same thermoplastic polyurethane chips (Note 2) as in Example 1, form a sheet of about 1.0 mm in the same manner as in Example 1 on release paper instead of the backing material, and then remove the release paper. The floor material surface layer was formed by stacking two sheets, and a polypropylene nonwoven fabric was laminated thereon. A flooring material was obtained in which the urethane chips were dispersed throughout the entire thickness of the matrix layer and a portion of the chips were exposed on the surface.

(Note 2) The difference in wear amount between the polyurethane chip sheet and the PvC matrix layer is approximately 500■, and the difference in wear thickness is Q.
+2+IIJl.

Example 8 PVC/vinyl acetate copolymer (Note 3) 100 parts Asbestos 5 parts CaC0B 200 parts Stabilizer 2 parts DOP 40 parts Materials Trace amount (Note 8) T' = 800, vinyl acetate content 5 parts Consisting of the above formulation Mix 20 parts of polymethyl methacrylate (PMMA, softening point: 190°C) chips (Note 4) with approximately the same particle size to 850 parts of PVC matrix chips with a particle size of 01 to 0.5 tns, and heat to 150°C in the same manner as in Example 2. Heat and pressurize to form a sheet with a thickness of 1.0 mm. Laminated with Otmir PVC backing.

(Note 4) The difference in the amount of wear between the PMMA sheet and the PVC matrix resin sheet is approximately 890"9s. The difference in the wear thickness is 0.
．． It was 11 tax.

The resulting sheet was punched into squares of about 30 crn on a side to obtain a non-slip floor tile in which the PMMA chips were dispersed throughout the entire thickness of the PvC matrix layer and a portion thereof was exposed on the surface.

Example 4 PVC (Pm2O3) 100 parts CaCO240 parts Stabilizer 1.5 parts DOP 50 parts Materials Trace amount Mix 12 parts of nylon 12 chips (softening point 210°C, note 5) with 200 parts of PVC matrix chips of the above composition. The sheet was heated at 170°C and then rolled to produce a 0.5u sheet in the same manner as in Example 2. Four of the sheets were laminated to form a 0.5u sheet.
．． The 02IIIJ+ vinylon fabric is lined with nylon+2 chips that are dispersed throughout the entire thickness of the matrix layer, with some of them on the surface (Note 3) The difference in the amount of wear between the nylon 12 sheet and the PVC matrix layer is Approximately 480m9.
The taper wear amount and wear thickness are summarized in Table 1.

Comparative Examples 1 to 4 Comparative flooring materials were obtained by creating flooring materials consisting only of the IJx layer.

Examples 1 to 4 and Comparative Examples 1 to 40 flooring materials obtained above were J
The non-slip property when dry and when wet was examined using a stainless steel photographic device according to the method of IS A 1407.

The results are shown in Table 2.

A three-level evaluation was conducted based on the floor slip resistance coefficient (Foundation).

A: Hard to slip (U>0.4) B: Slightly hard to slip (U=0.25-0.4) C: Easy to slip (U(0,25) Table 2 The flooring materials obtained in Examples 1 to 4 are Compared to Comparative Examples 1 to 40, the non-slip property was definitely improved, and the abrasion resistance was also improved.The non-slip property was also observed until the thickness completely disappeared due to wear. Since the material has no obvious unevenness, sand, dirt, and debris do not accumulate on the surface, making it easy to maintain.

Furthermore, a flooring material with non-slip properties and a multicolored mosaic pattern was obtained, doubling the appeal of the product.

[Brief explanation of the drawing]

FIG. 1 is a manufacturing process diagram of the non-slip flooring material of the present invention, FIG. 2 is a cross-sectional view thereof, and FIG. 8 is a cross-sectional view of the non-slip flooring material after use for a certain period of time from the state shown in FIG. 11°N/ is PVCy!
J ri x f "pj, +2-12" is a synthetic resin chip. Applicant for the above patent: Toyo Lino Reum Co., Ltd. Procedural amendment (spontaneous) March 2, 1981, 1, Indication of the case 1988 Patent Application No. 20944 2, Name of the invention: Non-slip flooring 3, Relationship with the person making the amendment: Patent applicant: Higashia Rioca, 5-125 Higashiarioka, Itami City, Toyo Toyo Linoleum Co., Ltd. 4, Date of amendment order: Showa year, month, day ( Date of dispatch (Showa year, month, day) 5, number of inventions increased by amendment 1, page 8, line 10 of the specification, “Figure 2” is changed to “Figure 2”
and correct it. 2. “Materials” on page 10, line 13 of the specification is corrected to “trace amount J.” 3. The leftmost column of table 1 on page 14 of the specification is corrected as follows.

Claims (1)

[Claims] 1. Obtained by mixing and integrating a polyvinyl chloride resin matrix chip and a synthetic resin chip that has a higher softening temperature and better wear resistance than the matrix chip,
A non-slip flooring material characterized in that the synthetic resin chips are dispersed throughout the matrix layer and a portion thereof is exposed on the surface.