JP2002179801A - Resin material for laminated flooring tile, resin sheet for the tile, the laminated flooring tile, and method for producing the tile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin material for a laminated flooring tile, and to provide the laminated flooring tile so controlled that no chlorine is emitted when the tile is incinerated, having such plasticity as equal to that of conventional tiles even though no plasticizer is added thereto, having good workability, and excellent in abrasion resistance and heat resistance. SOLUTION: This resin material for the laminated flooring tile contains a polyester-based elastomer. The polyester-based elastomer preferably comprises a polybutylene terephthalate-based elastomer, and more preferably comprises a block copolymer comprising polybutylene terephthalate and an amorphous or lowly crystalline aromatic polyester. A block copolymer which is formed by using a high-melting, highly crystalline aromatic polyester as hard segments and the amorphous or lowly crystalline aromatic polyester as soft segments is exemplified as the polyester-based elastomer. Further, the resin material for the laminated flooring tile may contain polyethylene terephthalate resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated flooring tile having good workability, abrasion resistance and heat resistance.
Resin material for laminated floor tile to manufacture the tile,
The present invention relates to a resin sheet for a laminated floor tile obtained from the same resin material, a method for producing the same, and a method for producing a laminated floor tile using the same.

[0002]

2. Description of the Related Art Conventionally, a laminate flooring laminate has a composition in which a phthalic acid ester such as dioctyl phthalate is usually added as a plasticizer to a polyvinyl chloride resin (hereinafter referred to as "PVC resin") as a base material. It is composed of Since the laminated floor tile made of PVC resin contains chlorine, toxic gas may be generated at the time of waste incineration, or dioxin may be generated depending on the incineration temperature.
On the other hand, phthalates used as plasticizers are:
Since it acts as a kind of endocrine disruptor, it is regarded as a problem in terms of safety.

On the other hand, a laminated floor tile made of a polyolefin resin containing no halogen atom in the molecule is becoming popular as de-PVC. This does not generate toxic gas during waste incineration, and is environmentally friendly.However, when installing laminate flooring tiles, the adhesive strength between the floor and the tile is not sufficient with a commonly used vinyl adhesive or the like. Therefore, improvement is desired.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to minimize the emission of halogens such as chlorine during incineration of waste and the like,
Laminated flooring tiles that have the same plasticity as conventional products without using a plasticizer that can be an environmental hormone such as phthalate ester monomer, have good workability, and are excellent in abrasion resistance and heat resistance. Is to provide.

The present invention also relates to a resin material for producing a laminated floor tile, a resin sheet for a laminated floor tile obtained from the resin material, a method for producing the same, and a production of a laminated floor tile using the sheet. The purpose is to provide the law.

[0006]

Means for Solving the Problems As a result of intensive studies on the above problems, the present inventors have found the following novel resin materials for laminated flooring tiles, and have completed the present invention.

[0007] That is, the resin material for a laminated flooring tile according to the present invention is characterized by containing a polyester elastomer (A).

The polyester elastomer (A) used in the present invention is preferably a polybutylene terephthalate elastomer, more preferably a block copolymer of polybutylene terephthalate and an amorphous or low-crystalline aromatic polyester. .

A first example of the polyester elastomer (A) used in the present invention is that a hard segment (A1h) is made of a high melting point, highly crystalline aromatic polyester and a soft segment.
(A1s) is a block copolymer (A1) using an amorphous or low-crystalline aromatic polyester.

A typical example of the polyester elastomer of the first example is a hard segment mainly composed of polybutylene terephthalate obtained from terephthalic acid and 0.6 mol or more of tetramethylene glycol with respect to 1 mol of the acid. A
1h) 20 to 70% by weight of aromatic dicarboxylic acid 99 to 9
0 mol% and a linear aliphatic dicarboxylic acid having 6 to 12 carbon atoms 1
80 to 30% by weight of a soft segment (A1s) mainly composed of a polyester obtained from an acid component comprising from 10 to 10 mol% and a diol component comprising a linear diol having 6 to 12 carbon atoms.
Block copolymer polyester elastomer
(A1), the melting point of the polyester elastomer (A1)
(T) is in the following range: T ₀ −5>T> T ₀ −60 T> T ′ + 10 (T ₀ is the melting point of a polymer consisting only of the components constituting the hard segment (A1h), and T ′ is Hard segment (A
1h) and the melting point of a copolymer composed of all the components constituting the soft segment (A1s).

The term “mainly” or “mainly” as used herein means that at least 70 mol%, preferably 80 mol% or more, is the component.

The polyester elastomer of the first example (A1)
The hard segment (A1h) is mainly composed of polybutylene terephthalate obtained from terephthalic acid and tetramethylene glycol, but terephthalic acid and tetramethylene glycol have an aromatic ring containing a benzene ring or a naphthalene ring other than terephthalic acid. An acid component such as a dicarboxylic acid and an aliphatic dicarboxylic acid having 4 to 12 carbon atoms, and a diol component such as an aliphatic diol having 2 to 12 carbon atoms other than tetramethylene glycol and an alicyclic diol such as cyclohexanedimethanol are copolymerized. The copolymerization ratio may be less than 30 mol% based on the total dicarboxylic acid,
Preferably it is less than 10 mol%. This copolymerization ratio is
The smaller the melting point, the higher the melting point, which is preferable. However, such a copolymerization may be performed to increase flexibility.

The polyester elastomer of the first example (A1)
Amorphous or low-crystalline polyester as a main component of the soft segment (A1s) is composed of 99 to 90 mol% of an aromatic dicarboxylic acid and 1 to 10 mol% of a linear aliphatic dicarboxylic acid having 6 to 12 carbon atoms. Acid component and carbon number 6
It is a polyester obtained from a diol component consisting of a straight-chain diol of No. 12 to No. 12. Examples of aromatic dicarboxylic acids include terephthalic acid and isophthalic acid. Examples of linear aliphatic dicarboxylic acids having 6 to 12 carbon atoms include:
Adipic acid, sebacic acid and the like can be mentioned. The amount of the linear aliphatic dicarboxylic acid is preferably 1 to 10 mol%, more preferably 2 to 5 mol%, of all the acid components constituting the polyester of the soft segment (A1s). If this amount is less than 1 mol%, the flexibility of the soft segment (A1s) is impaired, and as a result, the polyester elastomer (A
The softness of 1) is impaired.

The diol component constituting the amorphous or low-crystalline polyester of the soft segment (A1s) of the block copolymer polyester elastomer (A1) of the first example is a straight-chain diol having 6 to 12 carbon atoms. . The polyester constituting the soft segment (A1s) needs to be amorphous or low-crystalline, and for that purpose, preferably at least 20 mol% of all the acid components constituting the polyester is isophthalic acid.

The soft segment (A1s) may be one obtained by copolymerizing some other components similarly to the hard segment (A1h). In the first example of the block copolymer polyester elastomer (A1), the hard segment (A1h)
And the soft segment (A1s) preferably has a quantitative ratio of 20 to
50 to 80 to 50, more preferably 25 to 40 to 75
60. If the amount ratio of the hard segment (A1h) is too large, the block copolymer polyester elastomer (A
If 1) is hard and difficult to use, and if the amount ratio of the soft segment (A1s) is too large, the block copolymer polyester elastomer (A1) has low crystallinity and is difficult to handle.

The segment lengths of the soft segment (A1s) and the hard segment (A1h) of the block copolymer polyester-based elastomer (A1) of the first example are preferably expressed as molecular weights, preferably about 500 to 7000, more preferably It is about 800 to 5000, but this is not particularly limited. This segment length is difficult to measure directly, but its estimate is, for example, the soft segment (A
1s) and the hard segment (A1h), the composition of the polyester constituting each, the melting point (T ₀ ) of the polyester consisting of only the components constituting the hard segment (A1h), and the soft segment (A1s) and the hard segment (A1h). Block copolymer polyester elastomer (A
It can be determined from the melting point (T) of 1) using Flory's equation.

In view of the above, the melting point (T) of the block copolymer polyester elastomer (A1) of the first example is an important item, and is between T ₀ -5 and T ₀ -60 (T ₀ −5). 5>T>
T ₀ -60), preferably between _T 0 -10 and _T 0 -50 (T
_{0 -10>T> T 0 -50} ), more preferably _T 0 -15
And T ₀ -40 (T ₀ -15>T> T ₀ -40). This melting point is at least 10 ° C. higher than the melting point (T ′) of the random copolymer (T> T ′ + 10),
Preferably, the temperature is higher by at least 20 ° C. (T> T ′ + 20).
The melting point should be 0 ° C. or higher, preferably 160 ° C. or higher.

When this polymer is not a block copolymer but a random copolymer, the polymer is generally amorphous and has a low glass transition temperature, so that it is syrup-like and the moldability is significantly reduced. It is not something that can be used as a real problem, such as having a rough surface.

In order to produce such a polyester block copolymer, for example, polyesters constituting the soft segment (A1s) and the hard segment (A1h) are produced, and these are melt-mixed and the mixture has a melting point of the hard segment (A1s). A1h) to be lower than that of the polyester constituting Since this melting point varies depending on the mixing temperature and time, when the mixture reaches a state showing the desired melting point, a catalyst deactivator such as phosphorus oxyacid is added,
It is preferred to deactivate the catalyst added in the polymerization stage.

As the block copolymer polyester-based elastomer (A1) of the first example, those having an intrinsic viscosity of 0.6 or more, preferably 0.8 to 1.5 measured at 35 ° C. in orthochlorophenol are used. it can. Those having an intrinsic viscosity lower than this are not preferable because the strength is lowered.

A second example of the polyester elastomer (A) used in the present invention is a block copolymer of a block (A2h) composed of a crystalline aromatic polyester and a block (A2s) composed of a polyoxyalkylene glycol. It is a polyester elastomer (A2).

Polyester elastomer (A2) of the second example
Is a polybutylene terephthalate composed of terephthalic acid or its ester-forming derivative and tetramethylene glycol or its ester-forming derivative. Terephthalic acid and tetramethylene glycol may each be used alone, or another third component may be copolymerized with them. Acids as the copolymerizable third component include, for example, isophthalic acid, phthalic acid, aromatic dicarboxylic acids such as naphthalenedicarboxylic acid, adipic acid, aliphatic dicarboxylic acids such as sebacic acid, and alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid. Acids. Diols as the copolymerizable third component, for example, ethylene glycol, aliphatic glycols such as hexamethylene glycol,
Alicyclic diols such as cyclohexanedimethanol,
Aromatic diols such as bisphenol A and hydroquinone.

Examples of the polyoxyalkylene glycol constituting the block (A2s) include polyethylene glycol and polytetramethylene glycol, and polyoxytetramethylene glycol is practical.

The second example of the block copolymer polyester elastomer (A2) can be produced by a usual polycondensation method.

[0025] The resin material for a laminated flooring tile according to the present invention may further contain a polyethylene terephthalate resin (B) (hereinafter referred to as "PET resin") in addition to the polyester elastomer (A).

The PET resin (B) used in the present invention is a polyester resin substantially comprising terephthalic acid as a dicarboxylic acid component and ethylene glycol as a diol component. This may be substantially a PET resin, and may contain a small amount of another polyester resin such as polybutylene terephthalate or polyethylene isophthalate.

The intrinsic viscosity of the PET resin (B) is preferably 0.4 when measured in 35 ° C. orthochlorophenol.
-1.5, more preferably 0.4-0.9.

[0028] The resin material for the laminated flooring tile according to the present invention is a polyester elastomer (A) and a PET resin.
In addition to (B), an inorganic filler (C) can be further included.

The inorganic filler (C) used in the present invention may be a filler used in a conventional PVC resin laminate flooring tile. That is, a basic calcium salt represented by calcium carbonate, a basic magnesium salt represented by magnesium carbonate, talc and kaolin are exemplified. Of these, basic calcium salts are preferred, and calcium carbonate is most preferred.

A preferred resin material for laminated flooring tiles comprises 50 to 100% by weight of a polyester elastomer (A) and 0 to 50% by weight of an inorganic filler (C).

Another preferred resin material for laminated floor tiles is 5 to 50% by weight of a polyester elastomer (A), 5 to 80% by weight of a PET resin (B), and an inorganic filler.
(C) 0-60% by weight.

Next, the production of a resin sheet for a laminated floor tile will be described.

After mixing the resin material for a tile of a laminated flooring material according to the present invention, the mixture is extruded and injection-molded by an injection molding machine to produce a resin sheet for a tile of a laminated flooring material. The resin material for the laminated floor tile is premixed in a powder or pellet state. After mixing, the mixture is subjected to injection molding by a usual means using an extrusion injection molding machine, whereby a sheet having a constant thickness and width is continuously produced.

Further, in order to give the sheet a cushioning property or to reduce the material cost, a specific chemical foaming agent is added to the resin material for the laminated floor tile in advance, so that the foamed sheet is formed on the sheet after molding. Can be made into a so-called foam molded article.

Next, the production of the laminated floor tile will be described.

The laminated floor tile includes a surface layer, a resin layer and, if necessary, a lowermost resin layer. A printing layer may be provided between the surface layer and the resin layer or a printing surface may be formed. The resin material for a laminated flooring tile according to the present invention is used as a material for a resin layer. The surface layer protects the tile surface (especially the printed surface), the printed layer or the printed surface is for design, the resin layer is for cushioning and maintaining the tile shape, and the resin bottom layer is for adhesion to the floor surface and It functions to maintain the tile shape. As the surface layer, the above-described alkyl phthalate polyester resin layer is preferable, and as the resin lowermost layer, a resin layer such as an alkyl phthalate polyester resin, PET resin, styrene resin, or vinyl acetate resin is preferable. It is preferable that the phthalate alkyl polyester resin layer is printed or the surface layer is back-printed (transferred printed matter).

After these two to four layers constituting the laminated flooring tile are overlaid, they are thermally fused using a hot plate press, a hot platen or a hot roll to produce a laminated flooring tile. be able to.

In the production stage of the laminated floor tile, styrene-butadiene rubber (SBR) is added to at least one of the constituent layers in order to reduce the material cost of the floor tile.
EVA can be further superimposed. Further, at least one of the constituent layers may be foamed in order to reduce the material cost of the laminated flooring tile. For foaming, a carbon dioxide gas, a nitrogen gas or the like can be used in addition to the chemical foaming agent.

The surface layer of the laminated floor tile may be made of a polyester elastomer (A) which is a component of the resin material for a laminated floor tile according to the present invention.

Particularly preferred surface layers include (a) i) a hard segment (A1h) mainly composed of polybutylene terephthalate obtained from terephthalic acid and 0.6 mol or more of tetramethylene glycol with respect to 1 mol of the acid. 20-70% by weight, ii) 99-90 mol% of aromatic dicarboxylic acid and carbon number 6
Soft segment (A1s) mainly composed of a polyester obtained from an acid component composed of 1 to 10 mol% of a linear aliphatic dicarboxylic acid having a carbon number of 6 to 12 and a diol component composed of a linear diol having a carbon number of 6 to 12 (B) a polybutylene terephthalate resin mainly obtained from terephthalic acid and 1,4-butanediol.
(D) 0 to 50% by weight, and (C) 0.5 to 5 parts by weight of a fatty acid metal salt (E) having 16 to 30 carbon atoms with respect to 100 parts by weight of these polymer components. the melting point of A1) (T) is in the range of below _{T 0 -5>T> T 0} -60 T> T '+ 10 (T 0 hard segment (A1h) be a melting point of the polymer composed only of components constituting the , T 'is the hard segment (A
1h) and the melting point of a copolymer composed of all the components constituting the soft segment (A1s).

[0041]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be specifically described with reference to several embodiments of the present invention. However, these examples do not limit the present invention.

Production Example 1 (Production of Elastomer (A1)) i) Production of Polyester for Hard Segment (A1h) 298 parts by weight of terephthalic acid and 330 parts by weight of tetramethylene glycol were mixed at 250 ° C. for 240 minutes in the presence of a catalyst. Condensed. Thus, polybutylene terephthalate for a hard segment (A1h) having an intrinsic viscosity of 0.98 was obtained.

Ii) Preparation of polyester for soft segment (A1s) 175 parts by weight of dimethyl isophthalate, 23 parts by weight of dimethyl sebacate and 140 parts by weight of hexamethylene glycol were heated at a temperature of 16 in the presence of a dibutyltin diacetate catalyst.
A transesterification reaction was performed at 0 ° C., and the temperature was increased while removing by-produced methanol. When the temperature reached 250 ° C., the pressure was reduced, and a polycondensation reaction was performed for 190 minutes. Thus, an amorphous soft segment (A1s) polyester having an intrinsic viscosity of 1.06 and having no endothermic peak (measured by the DSC method) due to melting of the crystal was obtained.

Iii) Production of Block Copolymer Polyester Elastomer (A1) To 321 parts by weight of the polyester for the soft segment (A1s), 107 parts by weight of dry chips of polybutylene terephthalate for the hard segment (A1h) were added, and these were added to 240 parts.
After melt-kneading at 45 ° C. for 45 minutes, the reaction was stopped by adding 0.1 part by weight of phenylphosphonic acid. The obtained block copolymerized polyester elastomer (A1) was formed into chips. This chip has a melting point of 190 ° C. and an intrinsic viscosity of 0.1.
93.

Production Example 2 (Production of Elastomer (A2)) After 28 parts by weight of dimethyl terephthalate, 18 parts by weight of tetramethylene glycol and 40 parts by weight of polyoxytetramethylene glycol having an average molecular weight of 1,400 were subjected to a transesterification reaction by a conventional method. Polymerization reaction under reduced pressure,
Block copolymerized polyester-based elastomer having an intrinsic viscosity of 1.41 measured in orthochlorophenol at 35 ° C.
(A2) was obtained. The block (A) in this block copolymer (A2)
The polyoxytetramethylene glycol corresponding to 2s) is 56% by weight in terms of the charged amount.

Example 1 (Manufacture of laminated flooring tile) 30.4% by weight of recycled PET resin as PET resin (B) and hard segment (A1h) composed of polybutylene terephthalate as polyester elastomer (A) Commercially available elastomer ("Neuberan R441" manufactured by Teijin Limited)
0AN ”), 23.6% by weight, and 46% by weight of calcium carbonate as an inorganic filler (C) were mixed with a resin material for a laminated floor tile made of these, and the mixture was extruded by an injection molding machine. By injection molding,
A resin sheet having a constant thickness and width was obtained.

Next, this resin sheet is used for the resin layer, and the resin sheet made of the above-mentioned commercially available elastomer is used for the surface layer, and the resin layer is heat-sealed to the surface layer via a printing layer by using a hot press. A laminated flooring tile composed of a surface layer, a printed layer, and a resin layer was obtained. Example 2 (Manufacture of laminated flooring tile) The amount of recovered and recycled PET resin was increased to 76% by weight.
Example 1 except that the amount of calcium carbonate was changed to 0% by weight and the amount of commercially available elastomer was changed to 24% by weight.
In the same manner as in the above, a laminated floor tile was obtained.

Performance test The laminated floor tiles obtained in Examples 1 and 2 were used as test pieces 1 and 2, respectively, and the conventional floor tile made of PVC resin was used as a comparative test piece. These were evaluated for the following items. did.

1) Adhesive Strength An adhesive strength evaluation test was performed in accordance with JIS A5536. That is, a general-purpose vinyl adhesive ("Gosei F" manufactured by Tori Co., Ltd.)
Was applied at an application amount of 0.035 g / cm ² , and an open time was taken for 10 minutes. Thereafter, a test piece having a tensile test jig attached thereto with an instant adhesive and a comparative test piece were adhered to the substrate, respectively. This is placed in a thermostatic chamber at a temperature of 20 ° C and a humidity of 65% for 4
Dried for 8 hours. After drying, the test specimen was attached to a tensile tester, and the measurement was performed at a tensile speed of 1120 kg / min.

2) Abrasion Resistance The abrasion resistance evaluation test was carried out based on the abrasion test method according to the JIS A1453 abrasive paper method. The abrasive paper was cleaned with a brush every 100 times and replaced every 500 times. This test was performed until the surface layer was broken and reached the printed layer.

The evaluation results are shown in Table 1.

[0052]

Table 1 Test piece 1 Test piece 2 Comparative test piece Surface layer thickness 0.20mm 0.20mm 0.20mm Abrasion test 3000 times 3000 times 1250 times Tensile strength Pass Pass Pass The tensile strength is 5.10 kg / cm ² or more according to JIS. Passed.

[0053]

The resin material for laminated flooring tiles according to the present invention and the laminated flooring tile obtained therefrom do not contain any halogen such as chlorine, so that there is no possibility of generating toxic gas at the time of incineration or the like, and Because it does not contain a plasticizer that can be an environmental hormone such as phthalate ester monomer, it is superior in terms of environmental protection as compared with conventional PVC laminate flooring tiles and polyolefin resin laminate flooring tiles. It is a thing.

In addition, the resin material for a laminated flooring tile according to the present invention can be easily formed into a sheet by injection molding, and the productivity can be improved as compared with a conventional laminated flooring tile made of PVC.

In addition, the laminated floor tile that can be produced from the resin material for a laminated floor tile according to the present invention has good workability, and is excellent in wear resistance and heat resistance.

Further, as the PET resin material constituting the resin material for the laminated flooring tile according to the present invention, PET bottles that are difficult to dispose can be recycled and used, and in this respect, environmental problems are also reduced. Solvable.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) C08K 3/00 C08K 3/00 C08L 67/02 C08L 67/02 E04F 15/10 104 E04F 15/10 104A / / B29K 67:00 B29K 67:00 105: 16 105: 16 B29L 31:58 B29L 31:58 (72) Inventor Shoichi Soga 1-10-8 Edobori, Nishi-ku, Osaka-shi, Osaka Daiso Corporation (72) Invention Person Shoichiro Yamada 2-1-1, Uchisaiwai-cho, Chiyoda-ku, Tokyo Inside Teijin Limited (72) Inventor Hotaka Yokomizo 1-4-13, Onodai, Midori-ku, Chiba-shi, Chiba F-term (Chiba Research Center) 4F100 AA01A AA01H AA08H AK41A AK42A AL02A AL09A CA23 EC03 EC032 EH17 EH172 GB08 JA05A JA11A JA12A JJ03 JK09 JL01 YY00A 4F204 AA24 AA24F AA25 AA27 AA4 5 AB11 AH48 FA15 FB01 FB13 FB22 FE06 FF01 FG08 FH06 FN06 FN15 FQ01 FW15 4F206 AA24 AA24F AA25 AA27 AA45 AB11 AH48 JA03 JE06 JF02 JF21 JL05 JM04 JN43 JQ29 JQ46 JQ41 J02 JW46 JQ4

Claims (17)

[Claims] 1. A resin material for a laminated flooring tile, comprising a polyester elastomer (A). 2. The resin material according to claim 1, wherein the polyester-based elastomer (A) is a polybutylene terephthalate-based elastomer. 3. The laminated floor according to claim 1, wherein the polyester elastomer (A) is a block copolymer of polybutylene terephthalate and an amorphous or low-crystalline aromatic polyester. Resin materials for tiles. 4. A hard segment (A1h) wherein the polyester elastomer (A) is mainly composed of polybutylene terephthalate obtained from terephthalic acid and 0.6 mol or more of tetramethylene glycol with respect to 1 mol of the acid. 20
~ 70 wt%, aromatic dicarboxylic acid 99 ~ 90 mol% and carbon number 6 ~ 12
80 to 30% by weight of a soft segment (A1s) mainly composed of a polyester obtained from an acid component composed of 1 to 10 mol% of a linear aliphatic dicarboxylic acid of the formula (I) and a diol component composed of a linear diol having 6 to 12 carbon atoms. a block copolymer polyester elastomer (A1) consisting of, T ₀ -5 melting point of the polyester-based elastomer (A1) (T) is in the following _{range>T> T 0 -60 T>} T '+ 10 (T ₀ is the melting point of the polymer consisting of only the components constituting the hard segment (A1h), and T 'is the hard segment (A1h).
1h) and the melting point of a copolymer composed of all the components constituting the soft segment (A1s)). 5. A block (A2) comprising a polyester-based elastomer (A) comprising a crystalline aromatic polyester.
h) and a block copolymer polyester-based elastomer (A2) of a block (A2s) made of polyoxyalkylene glycol. 6. A polyethylene terephthalate resin
The resin material for a laminated flooring tile according to any one of claims 1 to 5, further comprising (B). 7. The resin material for a laminated flooring tile according to claim 6, wherein the intrinsic viscosity of the polyethylene terephthalate resin (B) is in the range of 0.4 to 1.5 dl / g. 8. The resin material according to claim 1, further comprising an inorganic filler (C). 9. The resin material for a laminated flooring tile according to claim 8, wherein the inorganic filler (C) is basic calcium and / or basic magnesium. 10. A polyester-based elastomer (A) 50
The resin material for a laminated flooring tile according to any one of claims 1 to 5, comprising from 100 to 100% by weight and 0 to 50% by weight of an inorganic filler (C). 11. A polyester elastomer (A)
50% by weight, polyethylene terephthalate resin (B)
The resin material for a laminated flooring tile according to any one of claims 6 to 9, comprising 80% by weight and 0 to 60% by weight of an inorganic filler (C). 12. The laminated floor tile according to any one of claims 1 to 11, wherein the resulting mixture is injection-molded with an extruder. Manufacturing method of resin sheet. 13. A resin sheet for laminated flooring tiles, obtained by the production method according to claim 12. 14. A laminate flooring tile comprising a surface layer and a resin layer, wherein the resin layer is the resin sheet according to claim 13. 15. A polyester-based elastomer having a surface layer
The laminated flooring tile according to claim 14, comprising: (A). 16. A hard segment (A1h) whose surface layer is mainly composed of (a) i) polybutylene terephthalate obtained from terephthalic acid and 0.6 mol or more of tetramethylene glycol with respect to 1 mol of the acid. 20-70% by weight, ii) 99-90 mol% of aromatic dicarboxylic acid and carbon number 6
Soft segment (A1s) mainly composed of a polyester obtained from an acid component composed of 1 to 10 mol% of a linear aliphatic dicarboxylic acid having a carbon number of 6 to 12 and a diol component composed of a linear diol having a carbon number of 6 to 12 (B) a polybutylene terephthalate resin mainly obtained from terephthalic acid and 1,4-butanediol.
(D) 0 to 50% by weight, and (C) 0.5 to 5 parts by weight of a fatty acid metal salt (E) having 16 to 30 carbon atoms with respect to 100 parts by weight of these polymer components. the melting point of A1) (T) is in the range of below _{T 0 -5>T> T 0} -60 T> T '+ 10 (T 0 hard segment (A1h) be a melting point of the polymer composed only of components constituting the , T 'is the hard segment (A
1h) and the melting point of a copolymer composed of all the components constituting the soft segment (A1s)). 17. The production of a laminated flooring tile according to any one of claims 14 to 16, wherein the surface layer and the resin sheet are thermally welded by using a hot press to produce the laminated flooring tile. Law.