JP2003213572A - Reinforcing member for floor material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor material which has excellent dimensional stability and does not cause upward warp, blister and the like. <P>SOLUTION: This floor material is characterized by laminating a printed film layer and a protecting layer to a floor material in which a glass fiber fabric subjected to a urethane-based resin treatment is used as a material for reinforcing a backer layer. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a member suitable for a building material, especially a floor material, particularly a reinforcing material for a backer layer constituting a plastic floor material, and uses the member as a reinforcing material. The present invention relates to a flooring material having excellent dimensional stability.

[0002]

2. Description of the Related Art A wide variety of products have been known for a long time as building materials and floor materials. Among them, in the case of a floor type, a plastic material has a multi-layered structure, typically Consists of a surface protection film layer with scratch resistance (scratch, scratch) resistance, stain resistance, impact resistance, etc., a printed film layer printed with various patterns, and a backer layer which is usually a multiple resin layer as a support. In some cases, a bottom layer (back layer) that is adhered to a base material such as concrete or mortar of a building is provided. This is mainly made of plain gauze, which is a plain weave fabric with coarse mesh, but is intended to strengthen the adhesion to a base material such as concrete or mortar.

As a material suitable for the backer layer, materials made of various fillers such as calcium carbonate in addition to polyvinyl chloride-based materials and polyolefin-based materials are known, and there are many variations in terms of materials and structures. Vinyl chloride resin is excellent in mechanical properties, chemical resistance, and flame retardancy, and has a wide tolerance of filling compounding and processing, so it is processed into various products from hard products to soft products. It is used in almost every field from everyday products such as footwear or packaging containers to industrial products such as pipes, joints or wire coatings.

Flooring materials are no exception, and they are particularly inexpensive and have excellent self-extinguishing properties, water resistance, oil resistance, chemical resistance, and moldability. A coated laminated product of a vinyl chloride resin calendar sheet subjected to semi-melt processing and the like is often used.

However, although these floor materials are satisfactorily dimensionally stable, it is often experienced that the flooring warps and swells due to the difference in temperature. In order to prevent warpage and blistering, it is necessary to use a strong adhesive and attach it to the surface of concrete, mortar, etc., and fix it. For this reason, concrete or mortar often adheres to the vinyl chloride resin floor material when stripping off all or part of it during relining, repair, and the like. It is impossible to incinerate as it is, and the trouble and complexity of sorting are problems.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a member suitable for reinforcing a backing layer constituting a flooring material, particularly a plastic flooring material, and further, a size using the member as a reinforcing material. It is intended to provide a floor material having excellent stability.

[0007]

Means for Solving the Problems The inventors of the present invention have made an earnest search for a member suitable for reinforcing a backer layer and found that when a urethane-treated glass fiber cloth is used as a reinforcing material for the backer layer, it is extremely dimensionally stable. That a flooring material having excellent properties can be obtained, in particular, when a reinforcing member obtained by subjecting a glass fiber cloth of a specific thickness to a urethane treatment is used for reinforcing the backer layer, the dimensional stability is remarkably excellent. I obtained an unexpected finding. The present invention has been made based on such knowledge.

On the other hand, the polyurethane resin for treating the glass fiber cloth is also studied, and the dimensional stability is maintained by treating it with a polyester polyurethane resin, a polyurethane resin cross-linked with an epoxy resin, or an ionomer type polyurethane resin. I also found out. The present inventors have made further studies and arrived at the present invention.

That is, according to the present invention, (1) a reinforcing member for flooring, characterized by comprising a glass fiber cloth treated with a polyurethane resin, and (2) a glass fiber cloth of 30 to
The floor member reinforcing member according to (1), which has a thickness of 500 microns, (3) the floor member reinforced with the reinforcing member according to (1) or (2), (4) a protective film layer, a printing film. A layer, a layer comprising the reinforcing member according to (1) or (2) above, and a flooring layer comprising a backer layer, (5) The floor according to (4) above, wherein the dimensional change rate is less than 0.15%. Material,
(6) The flooring material according to (4) above, wherein the dimensional change rate is 0.01 to 0.05%.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The polyurethane resin used for treating the glass fiber cloth in the present invention is, for example, a polyester polyurethane resin, a polyurethane resin crosslinked with an epoxy resin, or an ionomer type polyurethane resin.

On the other hand, the glass fiber cloth is, for example, a plain weave woven from yarn, a glass cloth such as a leno weave, a satin weave or a twill weave, a roving cloth woven from roving, a woven or knitted cloth such as a glass net or a knit. And the like. These can be manufactured by a known method or a method analogous thereto, and general commercial products are conveniently applied. Glass as a raw material for making these cloths is a non-alkali glass such as E glass, an alkali-containing glass such as C glass,
ECR with reduced content of alkali, boron and fluorine
Any of glass or the like may be used.

The surface of the glass fiber cloth used in the present invention may be surface-treated with a silane coupling agent. The silane coupling agent is usually an organic chain portion for providing an affinity or a bondability with a urethane resin, and when treated on the surface of the cloth, silicon of the silane coupling agent and the cloth via an oxygen atom. And a portion having a hydroxyl group or an alkoxy group for forming a chemical or electrical bond therebetween. Therefore, when the silane coupling treatment is performed, the adhesiveness between the cloth and the urethane resin can be improved.

Examples of the silane coupling agent include 3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, imidazoline silane, N-aminoethylaminopropyltrimethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane. Silane, γ-chloropropyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane or 3- (N-styrylmethyl-2-aminoethylamino) propyltrimethoxysilane hydrochloride A known silane coupling agent such as the above may be used.

When these silane coupling agents are used, the amount of adhesion is 0.
If it is from 05 to 1% by weight, its use is sufficiently added.

The polyurethane resin treatment of the glass fiber cloth means that the polyurethane resin is applied to both surfaces of the cloth, or the cloth is dipped in the molten or solution polyurethane resin and pulled up to squeeze the excess amount. Say that. As a coating method, a known means such as an applicator, a knife coater, a reverse roll coater, a gravure coater, a flow coater, a rod coater or a brush coater can be used.

The coating amount or impregnation amount of the polyurethane resin is about 1 to 50% by weight, preferably about 5 to 25% by weight based on the cloth coated or impregnated with the polyurethane resin. By applying such a polyurethane resin treatment to the glass fiber cloth, the adhesiveness with the backer layer is enhanced, and the dimensional stability of the flooring material using the same is extremely good. Dimensional stability is measured in the present invention by the rate of dimensional change. The dimensional change rate is determined by the method described in Test Example 1 below.

According to the present invention, the use of the glass fiber cloth treated with the urethane type resin as described above for reinforcing the backer layer has an effect on the dimensional stability of the flooring material. The thickness of the fabric is related to the dimensional stability of flooring made using the members of the invention. Effective glass fiber fabric thickness is typically 30 to 500 microns (0.03 to 0.5 millimeters), preferably 40.
~ 100 microns (0.04-0.1 mm). Looking at the types of flooring materials, 80 to 3 are used for tiles.
A thickness of 00 microns (0.08-0.3 mm) is 80-200 microns (0.0 mm) for long sheet applications.
A thickness of 8 to 0.2 millimeters) is preferred. In general,
When the thickness exceeds 500 μm, the tensile strength of the floor material is improved, but when a press is applied, it causes the eyes of the cloth to stand out on the surface of the floor material, warp, swell and the like. In addition, the rigidity of the flooring material becomes too great and the flexibility is impaired, which makes it difficult to perform the construction. On the other hand, if the thickness is less than 30 μm, the floor material becomes too soft, which causes a decrease in workability in the floor material manufacturing process and a decrease in workability during construction.

The glass fiber cloth used in the present invention may be treated by the action of fluid pressure.
By this treatment, opening of glass fiber occurs,
Since the unevenness disappears, a suitable member can be provided.

The polyurethane resin used for the treatment of the polyurethane resin includes, for example, a one-pack reaction type and a two-pack reaction type. Further, there are an aqueous type and a solvent type, respectively, and any of them may be adopted in the present invention, but the aqueous type is preferable. This is because physical properties such as film strength can be obtained while keeping the resin viscosity low. Moreover, as the polyurethane-based resin, a polyester-based polyurethane resin is particularly preferable. This is because the polyester polyurethane resin has advantages such as high film strength.

The one-component reaction type is preferable for the treatment using the aqueous polyurethane resin. That is, for example, it is preferable to use a polyurethane prepolymer having two or more isocyanate groups at the terminal, which is obtained by reacting an aliphatic, aromatic or alicyclic isocyanate with a polyol. This polyurethane prepolymer can be produced by a known method.

In the present invention, an aqueous polyurethane resin having a carboxyl group is particularly preferable. This is because it is possible to obtain an ionomer type polyurethane resin described later. As the aqueous polyurethane resin having a carboxyl group, it is preferable to use a polyurethane prepolymer obtained by reacting a polyol having a carboxyl group or a mixture of a polyol having a carboxyl group and a polyol having no carboxyl group with an isocyanate.

Examples of the above-mentioned isocyanates include 1,4-tetramethylene diisocyanate and 1,6
-Hexamethylene diisocyanate, 2,4,4-trimethylhexamethylene diisocyanate or 2,8
Aliphatic isocyanates such as diisocyanate methyl caproate; 3-isocyanate methyl-3,5,5
Alicyclic diisocyanates such as trimethylcyclohexyl isocyanate, dicyclohexylmethane-4,4-diisocyanate or methylcyclohexyl-2,4-diisocyanate, or toluylene diisocyanate, diphenylmethane diisocyanate, 1,5-
Diisocyanates such as aromatic diisocyanates such as naphthene diisocyanate, diphenylmethylmethane diisocyanate, tetraalkyldiphenylmethane diisocyanate, 4,4'-dibenzyl diisocyanate or 1,3-phenylene diisocyanate; these aliphatic, alicyclic or aromatic Chlorinated diisocyanates or brominated diisocyanates obtained by chlorinating or brominating diisocyanates; and polyisocyanate compounds obtained by adding water to chlorinated diisocyanates or brominated diisocyanates, etc., which are used alone Or, two or more kinds may be mixed.

Further, as the polyols, known polyols used for the production of ordinary urethane resins may be used. For example, diethylene glycol, butanediol, hexanediol, neopentyl glycol, bisphenol A, cyclohexanedimethanol, trimethylolpropane, glycerin, pentaerythritol,
Polyethylene glycol, polypropylene glycol,
Examples thereof include polyester polyol, polycaprolactone, polytetramethylene ether glycol, polythioether polyol, polyacetal polyol, polybutadiene polyol and furandimethanol.

As the polyols used in the present invention, the above polyols may be used alone or in combination of two or more kinds. Further, as the polyol having a carboxyl group, any polyol can be used in the present invention as long as it imparts a branched carboxyl group to the molecular structure of the polyurethane prepolymer. In order to increase the carboxyl group content in the prepolymer, it is preferable to use polyols having a low molecular weight of 3 to 10 carbon atoms and at least one branched carboxyl group.

In the above reaction, the ratio of isocyanates to polyols used is such that the urethane group prepolymer obtained has an isocyanate group content (calculated as solid content) of about 0.5 to 10% by weight, preferably about 1%. It is preferably adjusted to be about 4% by weight. If the isocyanate group content is less than 0.5% by weight, the molecular weight is unlikely to increase in the chain extension reaction, and if it exceeds 10% by weight, the amount of carbon dioxide gas generated in the chain extension reaction is too large, which makes production difficult. It is easy to become.

The amount of the polyol having a carboxyl group is about 10 KOHmg / g in terms of acid value (calculated as solid content).
It is preferably adjusted to about not less than about 20 KOHmg / g. Acid value is 10KOH
If it is less than mg / g, the particle size of the aqueous dispersion becomes large and the storage stability deteriorates.

For the aqueous polyurethane resin, for example, the above-mentioned polyurethane prepolymer can be dissolved or suspended in a solvent and / or water, and the basic organic compound and the extender can be added dropwise. Alternatively, the basic organic compound and the extender may be dissolved in a solvent and / or water, and this solution may be added dropwise to the polyurethane prepolymer solution or suspension. Then, the mixture is diluted with an appropriate amount of water, dehydrated or desolvated under reduced pressure until the concentration of non-volatile components becomes about 30 to 40% by weight, and further reacted at about 70 to 80 ° C for about 6 hours. It can be manufactured.

Examples of the solvent used include methyl ethyl ketone, methyl isobutyl ketone, ethyl acetate,
Examples thereof include toluene, xylene, isobutyl acetate, butyl acetate, acetone, dimethylformamide, N-methyl-2-pyrrolidone and diethylene glycol dimethyl ether.

Examples of the extender include water and polyamines. For example, ethylenediamine, diethylenetriamine, triethylenetetramine, propylenediamine, butylenediamine, cyclohexylenediamine, α, α-
Examples include diaminodiphenylmethane and m-xylenediamine.

Examples of the basic organic compound include dimethylethanolamine, diethylethanolamine and triethylamine, which react with a carboxyl group to form a hydrophilic group and impart hydrophilicity.

As the solvent-based polyurethane resin used for the urethane treatment of the glass fiber cloth in the present invention,
For example: The one-component reaction type uses a polyurethane prepolymer having an isocyanate group at the end of the polymer, reacts with water in the air or water adsorbed in the vinyl chloride resin layer, and forms a urea bond to form a vinyl chloride resin layer. To glue.

The two-liquid reaction type is composed of two liquids of a main agent having a hydroxyl group at the polymer terminal and a curing agent having an isocyanate group (-NCO). The reaction between the hydroxyl group and the isocyanate group forms a urethane bond to form vinyl chloride. Adhere to the resin layer. In the present invention, a two-component reaction type is preferred as the solvent-based polyurethane resin. This is because the one-liquid reaction type has insufficient adhesion and takes a long time to be completely adhered in a dry state or when the water adsorption of the vinyl chloride resin layer is low.

Examples of the polyurethane prepolymer in the one-component reaction type include polyurethane prepolymers obtained by reacting the above isocyanates and polyols, and polyether polyurethane polyisocyanates obtained by polyaddition of diisocyanates and polyether polyols. Alternatively, polyester polyurethane polyisocyanate obtained by polyadding diisocyanate and polyester polyol may be used.

Examples of the main component having a hydroxyl group at the polymer terminal in the two-component reaction type are the above-mentioned polyols; polyester polyols obtained by polycondensation of glycol and dicarboxylic acid; polyester polyurethane obtained by polyaddition of polyether polyol and diisocyanate. Polyol;
Alternatively, a polyether polyurethane polyol obtained by polyadding polyester polyol and diisocyanate may be used, and examples of the curing agent may include the above-mentioned isocyanates or triisocyanate.

The solvent-based polyurethane resin treatment can be further divided into, for example, a dry lamination treatment and a non-solvent lamination treatment. The dry lamination treatment is a treatment in which a one-component reaction type polyurethane prepolymer or a two-component reaction type main agent and a curing agent are dissolved in an organic solvent and applied or impregnated on a cloth. Examples of the solvent include toluene, xylene, isopropyl alcohol, methyl ethyl ketone, n-butanol and the like.

The treatment for non-solvent lamination is
This is a treatment for coating or impregnating the fabric with the one-component reaction type polyurethane prepolymer or the two-component reaction type main agent and curing agent heated without being dissolved in an organic solvent to reduce the viscosity.

The polyester-based urethane resin preferably used in the present invention preferably comprises, for example, polyisocyanate and polyester polyol. Polyisocyanate is a compound having one or more isocyanate groups, such as 2,4-tolylene diisocyanate (TDI) and 65/35 tolylene diisocyanate (2,4-tolylene diisocyanate and 2,6-tolylene diisocyanate). Is mixed at a ratio of 65/35 (weight ratio). The same applies hereinafter), 80/20 tolylene diisocyanate, 1,5-naphthalene diisocyanate (NDI), 4,4′-diphenylmethane diisocyanate (MDI), dianian. Sidine diisocyanate,
Tridene diisocyanate, hexamethylene diisocyanate, xylene diisocyanate (XDI), metaxylene diisocyanate, 1,6-hexamethylene diisocyanate (1,6HMDI), hydrogenated 4,4′-diphenylmethane diisocyanate, hydrogenated xylene diisocyanate, hydrogenated 2, 4-Tolylene diisocyanate, hydrogenated 65/35 Tolylene diisocyanate, hydrogenated 80/2
0 tolylene diisocyanate, isophorone diisocyanate (IPDI) and the like can be used.

As the polyisocyanate to be blended, in addition to the above polyisocyanate, trifunctional isocyanate 4,4 ', 4''-triphenylmethane triisocyanate (TPMT), tris (P-isocyanatephenyl) thiophosphine is used. A fate (TIPP) or the like can be used. The polyisocyanate content is preferably in the range of about 0.1 to 30 parts by weight with respect to 100 parts by weight of the solid content of the polyester urethane.
This is because if the compounding ratio is less than 0.1 parts by weight, the improvement in the adhesive strength is small, and if it exceeds 30 parts by weight, the improvement in the adhesive strength cannot be expected.

Examples of polyester polyols include polybutylene adipate (PBA), polyethylene butylene adipate (PEBA), polyethylene adipate (PET) or polyethylene sebacate (PES).
ET) etc. can be used. There are water-based or solvent-based types of polyester-based polyurethane resin,
Any of these may be used in the present invention, but an aqueous type is preferred. Further, any type can be manufactured in the same manner as the above-mentioned polyurethane resin, or by a known method or a method similar thereto.

In the polyurethane resin treatment according to the present invention, it is preferable to use a polyurethane resin crosslinked with an epoxy resin. In order to crosslink the polyurethane resin with the epoxy resin, the polyurethane resin and the epoxy resin may be mixed and applied or impregnated on the cloth. The epoxy resin is preferably an epoxy resin having at least two epoxy groups in one molecule. Examples of the epoxy resin include bisphenol A type epoxy resin, bisphenol F type epoxy resin, and novolac type epoxy resin.

A curing agent for epoxy resin may be used together with the epoxy resin. As the epoxy resin curing agent, an amine curing agent is preferably used. As the amine curing agent, triethylenetetraamine, isophoronediamine, metaxylenediamine or polyamidoamine,
Alternatively, modified products thereof may be mentioned. The curing agent is preferably used in an equivalent ratio of about 0.7 to 1.3.

In the case of solvent-based polyurethane resin treatment, a reactive diluent or a non-reactive diluent may be added. As the reactive diluent, for example, alkyl glycidyl ether, alkylphenol monoglycidyl ether, neopentyl glycol diglycidyl ether,
Examples thereof include 1,6 hexanediol diglycidyl ether, alkanoic acid glycidyl ester, ethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, and the like.

Examples of the non-reactive diluent include petroleum-based solvents such as toluene, xylene, coumarone, tar or modified petroleum, and alcohols such as benzyl alcohol, butyl diglycol or propylene glycol monomethyl ether.

Various known additives such as fillers and pigments can be added to the polyurethane resin or epoxy resin. Examples of the filler include calcium carbonate, silica, talc, barium sulfate, clay, mica, and silica sand, and examples of the pigment include inorganic pigments such as titanium oxide, iron oxide or carbon black, or phthalocyanine blue. And organic pigments.

In the polyurethane treatment of the present invention, it is preferable to use an ionomer type polyurethane resin.
Examples of the ionomer type polyurethane resin include a polyurethane resin having a carbonyl group in a side chain of a polyurethane polymer skeleton in which at least a part of a galbonyl group is partially neutralized with a metal cation or the like.

Examples of metal ions include Na, K and M
Ions such as g, Zn, Ca, Cu, Fe or Ba may be mentioned. Some of them are partially neutralized with ammonia or amine, and any of them may be used in the present invention.

Production of ionomer type polyurethane resin
For example, NaOH, KOH, ZnO, Zn
(OH)₂, MgO, Mg (OH)₂, CuO, Cu
(OH) ₂, Ba (OH)₂, ZnCO₃, MgC
O₃, Zn (CH₃COO)₂, Mg (CH₃COO)
₂Etc. or mixtures of two or more of these, alcoholates, or
Or lower fatty acid salt is added to neutralize the carbonyl group.
There is a method.

As a result, the carboxyl anion on the side chain of the polyurethane polymer skeleton is electrostatically bound to the metal cation existing between the molecules to form a kind of crosslink, and the intermolecular of the copolymer is separated from the metal. An ionomer type resin having a structure crosslinked with ions is obtained.

The flooring material having the backer layer reinforced with the urethane-treated glass fiber cloth thus obtained is one of the objects of the present invention, and the flooring material is as follows. Provided. That is, it is produced by laminating a synthetic resin material used as a backer layer and a urethane treated glass fiber cloth.

Examples of the synthetic resin material used here include polyvinyl chloride and polyolefin, and vinyl chloride resin is preferably used. Since there are hard vinyl chloride resin and soft vinyl chloride resin as vinyl chloride resin, it is preferable to use soft vinyl chloride resin.

The soft vinyl chloride resin may be a general-purpose vinyl chloride resin, and examples thereof include vinyl chloride homopolymers and vinyl chloride copolymers. Further, it is a polymer blend of polyvinyl chloride, ethylene-vinyl acetate copolymer, maleic acid-butadiene-styrene copolymer, polybutadiene, acrylonitrile-styrene copolymer or methacrylate graft polymer and the above polyvinyl chloride. May be.

A plasticizer, an inorganic filler, and other additives may be added to the vinyl chloride resin. As the plasticizer, various conventionally known plasticizers can be used. For example, DOP
And a linear dibasic acid ester such as DOA or a phosphoric acid ester such as TCP. The plasticizer is about 30 to 8 per 100 parts by weight of vinyl chloride resin.
About 0 parts by weight, preferably about 40 to 60 parts by weight is blended.

As the inorganic filler, various conventionally known fillers can be used, and among them, for example, hydroxides such as calcium carbonate and aluminum hydroxide, or a mixture thereof can be mentioned. Preferably, a powder of calcium carbonate having an average particle diameter of 10 μm or less, a mixed powder of the calcium carbonate powder and an aluminum hydroxide powder, or a surface-treated powder of these is used. If calcium carbonate powder is blended, flame retardancy can be imparted to the flooring material, but if a mixed powder of calcium carbonate powder and hydroxide powder such as aluminum hydroxide is blended,
Since the hydroxylation of aluminum hydroxide or the like releases water during thermal decomposition, it is possible to obtain a floor material having higher flame retardancy.

The inorganic filler is vinyl chloride resin 100
It is preferable to add about 50 to 300 parts by weight to parts by weight. If the amount is too large, the floor material becomes weak. On the other hand, if the amount is too small, the flame retardancy and dimensional stability of the floor material may be deteriorated.

In addition to the vinyl chloride resin, if necessary, a pigment, a peroxide-based crosslinking agent, a coupling agent, a lubricant such as bisamide, a phenol-based antioxidant, for example, a hindered amine-based light stabilizer, You may mix well-known additives, such as a ultraviolet absorber or a flame retardant.

The vinyl chloride resin can be formed into a sheet by a known method or a method similar thereto such as an extruder or a calendar. The polyvinyl chloride resin obtained here may be subjected to known treatment for improving the adhesiveness such as corona treatment, plasma treatment, or electron irradiation treatment. Examples of the corona treatment include a treatment performed under conditions of a temperature of about 0 to 50 ° C. and a discharge density of about 300 to 1600 w / m ² / min. Examples of the plasma treatment include a treatment performed in the atmosphere under the conditions of an electric field strength of about 5 to 90 kV / cm and a treatment time of about 1 to 180 seconds. As the electron beam irradiation processing, for example, an acceleration voltage of about 30
Examples of the treatment include a condition of 0 to 1000 kV and an irradiation dose of 1 to 30 Mrad.

The lamination of the obtained vinyl chloride resin sheet and the polyurethane-treated glass fiber cloth is carried out by a method known per se, such as wet lamination, hot melt lamination, extrusion coating lamination, coextrusion. Molding lamination,
Dry lamination, non-solvent lamination, thermal lamination, etc. are mentioned. Thermal lamination by roll or flat plate pressing is preferred. The temperature is preferably around 120 to 180 ° C. This provides the reinforced flooring material of the present invention. The reinforced flooring material of the present invention can also be obtained by subjecting a polyurethane-treated cloth to a heat-pressurized backer material made of polyvinyl chloride resin to form a laminate. Flooring provided.

Further, the flooring material of the present invention includes a flooring material obtained by the above-mentioned method and a printing film layer and a protective film layer laminated thereon. The surface protective film layer has a stain resistance and a scratch resistance. A known film such as a good resin film may be used. Examples of the resin film having good stain resistance and scratch resistance include a vinyl chloride film, an ethylene vinyl acetate polymer film, an ionomer film, a nylon film such as a non-stretched nylon film or a biaxially stretched film, or a polyester film. . Further, the protective film layer may be a single layer or a multilayer. These techniques are well established and may be appropriately adopted in the present invention.

The printing film layer can be formed by applying any known printing method, for example, gravure printing,
A film printed by a method such as planographic printing, letterpress printing, screen printing or transfer printing can be used. As the film, a known film such as a vinyl chloride film or a polyester film may be used as long as it has adhesiveness to the resin film used for the surface protective layer. In addition, the ink used in this case may be selected from the inks usually used for decorative materials according to the material of the protective film.

The film used for the surface protective film layer or the printing film layer is preferably treated with an anchor coat agent (AC agent) or the like in order to enhance the adhesiveness. AC
As the agent, for example, a known agent such as an organic titanium-based AC agent or an isocyanate-based AC agent may be used.

As the laminating means for laminating the film used for the surface protective film layer or the printing film layer with the flooring material for reinforcing the backer layer, various laminating methods described above can be adopted.

The dimensional stability of the flooring material of the present invention thus obtained has a dimensional change rate of less than 0.15%, preferably less than 0.1%, more preferably 0.01 to 0.05%. is there. Since the dimensional stability is excellent as described above, warping, swelling, etc. do not occur, and the phenomenon that the eyes stand out during lamination does not occur. It can be used as a tile by cutting it to an appropriate size. The dimensional change rate in the present invention is determined by the method according to JIS A5705 described in Test Example 1 below. In the range of this dimensional change rate, for example, in Japan, the product of the present invention has a low temperature in winter (for example, −10 ° C.) to a high temperature in summer (for example, 40 ° C.).
Even if it is exposed to temperature changes up to (.degree. C.), it does not cause any problems due to dimensional changes.

The flooring provided by the present invention may be subjected to a known treatment on its surface. For example, a recess may be formed by embossing to improve the design, or the surface may be treated with a fluororesin to prevent the surface from becoming dirty. These treatments can be performed using a known method. For example, as a means for embossing, a known method such as pressing with an embossing roll or an embossing plate having an uneven surface can be used. The embossing may be performed separately from the lamination described below, but it is advantageous to perform the embossing simultaneously because the manufacturing process can be shortened.

Further, the flooring material provided by the present invention is excellent in dimensional stability and does not warp or swell, so that it is not necessary to firmly fix it to the base material, but in some cases, the base material May be fixed to. In addition, it is possible to laminate a cheesecloth on the lowermost layer to improve the adhesiveness to a base such as concrete or mortar. In order to obtain appropriate cushioning properties, a buffer layer made of foamed resin may be laminated.

[0065]

EXAMPLES Examples will be described below to more specifically describe the present invention, but the present invention is not limited thereto.

Example 1 A glass fiber cloth E08A C 105 J ST (manufactured by Unitika Glass Fiber Co., Ltd., thickness 0.07 mm plain weave) was used as an ionomer type polyurethane resin, Hydran AP-60LM (Dainippon Ink and Chemicals, Inc.). Manufactured) and CR-5 as an epoxy resin-based cross-linking agent
L (manufactured by Dainippon Ink and Chemicals, Inc.) 100: 2
The treating agent mixed in (weight ratio) was impregnated. The glass cloth impregnated with the treatment agent was squeezed with a mangle. At this time, the impregnated amount of the treating agent was adjusted to 9% by weight as a loss on ignition. Then, it was heated and dried at 150 ° C. for 3 minutes in a constant temperature dryer.

The glass fiber cloth obtained above was overlaid on a vinyl chloride backer material (thickness: 1.2 mm) prepared in advance, and further two layers of the above backer material were overlaid thereon to make a total of four layers. Of the material of 160 by calendar roll
The floor material of the present invention reinforced with a glass fiber cloth having a thickness of 2.8 mm was obtained by compression under the condition of ° C.

Example 2 A vinyl chloride printing film subjected to gravure printing was laminated on the flooring material obtained in Example 1, and further 500 as a protective film layer.
Layer vinyl chloride film of μm and press at 130 ℃,
A floor material having a thickness of 3 mm was manufactured. I couldn't see the phenomenon that my eyes got out.

[Test Example 1] The flooring materials produced in Examples 1 and 2 were subjected to a test for obtaining the dimensional change rate according to the test method described in JIS A 5705 "Rate change rate by heating". It was The floor material, which is a test piece, was placed on a test stand made of a stainless steel plate with its surface facing upward. Place the test piece in a test room kept at a temperature of 20 ° C and a humidity of 65%.
After standing for at least the time, the lengths of the marked lines at three points in each of the vertical and horizontal directions were measured to obtain the length before the test. Next, place the test piece in an incubator equipped with a stirrer, 5c vertically and horizontally from the inner wall of the vessel.
It was placed at an interval of m. The temperature inside the incubator was kept at 80 ° C. and left for 6 hours. Then, the test piece was taken out of the thermostat and left in a room kept at a temperature of 20 ° C. and a humidity of 65% for 1 hour. After that, the length of each marked line was measured to obtain the length after the test. The dimensional change rate was calculated by the following formula. As a result, the flooring material manufactured in Example 1 has a dimensional change rate of 0.02%.
And was 0.03% for the flooring material produced in Example 2. Therefore, it can be seen that the flooring material according to the present invention is excellent in dimensional stability. Dimensional change rate (%) = | {(length before test (mm) -length after test (mm)) / length before test (mm)} | × 10
0

[0070]

Since the flooring material obtained by the present invention is excellent in dimensional stability, it does not warp or swell, and therefore it is necessary to further firmly bond it with cement or mortar during construction. Instead, it is sufficient to use a pressure-sensitive adhesive having a fixing force such that the floor material does not move. Therefore, the cement or mortar does not come off during repair or replacement, and the work can be carried out conveniently. Further, it is not necessary to perform the construction depending on the temperature at the time of construction (for example, heat in summer and winter, cold). Furthermore, the thickness of the entire flooring material can be thinned due to the reinforcement by the glass fiber cloth treated with urethane resin, which can contribute to the reduction of workability and cost.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2E220 AA12 AA15 AA25 AA29 BB02                       BB05 BC06 DA02 DB05 EA03                       FA05 GA12X GA24X GA27X                       GB11Z GB28X GB28Z GB32X                       GB32Z GB33X GB34X GB35X                       GB37X                 4L033 AA09 AB04 AC15 CA50

Claims (6)

[Claims] 1. A reinforcing member for flooring, which is made of a glass fiber cloth treated with a polyurethane resin. 2. The reinforcing member for a floor material according to claim 1, wherein the glass fiber cloth has a thickness of 30 to 500 μm. 3. A flooring material reinforced with the reinforcing member according to claim 1. 4. A flooring material comprising a protective film layer, a printed film layer, a layer comprising the reinforcing member according to claim 1 and a backer layer, which are laminated. 5. The flooring material according to claim 4, wherein the dimensional change rate is less than 0.15%. 6. The flooring material according to claim 4, wherein the dimensional change rate is 0.01 to 0.05%.