KR102453651B1 - Tile flooring and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a tile flooring material and a method for manufacturing the same, and to a tile flooring material having excellent sound insulation and restoration properties and a method for manufacturing the same.

Description

Tile flooring and manufacturing method thereof

The present invention relates to a tile flooring material and a method for manufacturing the same, and to a tile flooring material having excellent sound insulation and restoration properties and a method for manufacturing the same.

The floor surface of a building structure is generally made of concrete and cement.

At this time, when the floor surface of the building structure made of concrete and cement is exposed as it is, the aesthetic feeling is reduced as well as cold air rises. .

An example of such a flooring material is a polyvinyl chloride (Polyvinyl Chloride, hereinafter referred to as 'PVC') tile flooring material having a low price and strong moisture resistance while providing various designs.

For example, the polyvinyl chloride (PVC) tile flooring material is disclosed in Korean Patent Application Laid-Open No. 10-2016-0027660.

However, the PVC tile flooring as described above has poor sound insulation properties, so it was intended to further include a foaming layer in the lowermost layer to compensate for this. When it was placed on the top and moved to another place, the foam layer was pressed and there was a problem that it could not be restored.

On the other hand, when the PVC tile flooring is installed on the floor, an adhesive is used on the floor to prevent the tile from lifting or sliding on the floor, but the adhesive is exposed to the outside and the tile flooring is contaminated. There has been a problem in that considerable effort and labor costs are consumed when removing the tile installed on the floor surface, and the adhesive painted on the floor surface has to be scraped off.

KR 10-2016-0027660 A (published on: 2016.03.10)

The present invention has been devised to solve the above-described problems, and an object of the present invention is to provide a tile flooring material having excellent sound insulation and restoration properties and a method for manufacturing the same.

Another object of the present invention is to provide a tile flooring material having excellent workability without an adhesive and a method for manufacturing the same.

In order to achieve the above object,

The present invention is a tile flooring material comprising a balance layer containing polyvinyl chloride resin, glass bubbles and a plasticizer,

The tile flooring material provides a tile flooring material having a sound insulation (ISO 10140-3) of Δ8-20dB and a stability (ASTM F970) of 800-1700psi.

In addition, the present invention comprises the steps of forming a balance layer comprising a polyvinyl chloride resin, glass bubbles and a plasticizer; It provides a method of manufacturing a tile flooring material comprising, sound insulation (ISO 10140-3) of Δ8-20 dB, and stability (ASTM F970) of 800-1700 psi.

The tile flooring material of the present invention has excellent sound insulation and restoration properties.

The tile flooring material of the present invention has excellent workability even without an adhesive, and thus has an eco-friendly effect.

1 is a side cross-sectional view showing an embodiment of a laminated structure of a tile flooring material according to the present invention.

The present invention is a tile flooring (1) comprising a balance layer (10) containing polyvinyl chloride resin, glass bubbles and a plasticizer,

The tile flooring material relates to a tile flooring material having a sound insulation (ISO 10140-3) of Δ8-20dB and a stability (ASTM F970) of 800-1700psi.

Referring to FIG. 1 , as a specific example of the present invention, a tile flooring material 1 includes a balance layer 10 including polyvinyl chloride resin, glass bubbles and a plasticizer sequentially from the bottom to the top; base layer 20; dimensional stability layer 30; stop layer 40; printed layer 50; and a transparent layer 60 .

Specifically, the tile flooring material 1 of the present invention has a sound insulation (ISO 10140-3) of Δ8 dB or more or Δ9 dB or more, and when it is less than the above range, the improvement in sound insulation is insignificant, so it can have sound insulation within the above range. In addition, the upper limit of the sound insulation property is not limited, but may be, for example, Δ20dB or less or Δ15dB or less.

The sound insulation property may be obtained by measuring a light impact sound according to ISO 10140-3, and then calculating the reduced noise (ΔdB) compared to the control group. The control group was measured on the cement surface, which is not finished with flooring, and the light impact sound of the control group was 70-75 dB.

In addition, the tile flooring material (1) of the present invention has a stability (ASTM F970) of 800 psi or more or 900 psi or more, and when it is less than the above range, the improvement of the stability is insignificant compared to the existing tile flooring material, so it can have the stability within the above range. In addition, the upper limit of the stability is not limited, but may be, for example, 1700 psi or less or 1600 psi or less.

For the stability, a jig having a diameter of about 28.6 mm is placed on the top of the specimen (length, width 50 mm x 50 mm) of the tile flooring material according to ASTM F970 and a constant pressure is applied for 1 day, and then the pressure is removed Then, after 1 day has elapsed, the thickness of the specimen is measured, and the maximum value of the pressure can be measured when the change in thickness is less than 0.125 mm.

In addition, the tile flooring material 1 of the present invention may have a tensile strength of 50-100 kgf/cm ² or 60-80 kgf/cm ² , and it satisfies the tensile strength required as a tile flooring material within the above range, thereby having excellent mechanical properties. there is

The tensile strength can be measured in the longitudinal direction after biting a specimen (length and width of 165mm x 13mm) of a tile flooring material with a clamp of a Universal Testing Machine (UTM, Instron) in accordance with ASTM D638.

In addition, the tile flooring material (1) of the present invention may have an elongation at break of 30-80% or 40-60%, Within the above range, the elongation at break required as a tile flooring material is satisfied, and mechanical properties are excellent.

The elongation at break is the length until the specimen (length and width of 165mm x 13mm) of the tile flooring material is broken by using a Universal Testing Machine (UTM, Instron) at room temperature (20-25℃) in accordance with ASTM D638. It can be measured by stretching in the direction.

Hereinafter, each layer will be described in detail.

balance layer (10)

The balance layer 10 of the present invention is located under the base layer 20, which is the thickest layer of the tile flooring material, and prevents distortion and bending of the tile flooring material. 18 parts by weight and 40-80 parts by weight of a plasticizer.

The polyvinyl chloride resin may be a general-purpose polyvinyl chloride resin that can be applied to both soft and hard products as a vinyl chloride homopolymer.

The polyvinyl chloride resin may have a polymerization degree of, for example, 800-1300 or 900-1200, and has an effect of imparting excellent durability and mechanical properties to a tile flooring material while having excellent processability within the above range.

The glass bubble has a hollow interior, and includes an air layer therein, thereby providing excellent sound insulation, heat insulation and lightness to the tile flooring 1 of the present invention.

In addition, the shape of the glass bubble is not particularly limited, and for example, it may be at least one selected from the group consisting of a plate shape (including a scaly shape), a spherical shape, a needle shape, a rod shape, and a fiber shape. , In a specific example, the glass bubble may have a spherical shape.

Specifically, the glass bubble may include at least 90% by weight, 94% by weight, or 97% by weight or more of soda-lime-borosilicate glass. The soda-lime-borosilicate glass contains 50-90% by weight of SiO ₂ , 2-20% by weight of alkali metal oxide, 1-30% by weight of divalent metal oxide, 1-30% by weight of B ₂ O ₃ , 0.005-1.5% by weight of sulfur or sulfur oxides. As a specific example of the soda-lime-borosilicate glass, 70-80% by weight of SiO ₂ , 3-8% by weight of Na ₂ O, 8-15% by weight of CaO, 2-6% by weight of B ₂ O ₃ , 0.125%-1.5% of SO ₃ may be exemplified, but not necessarily limited thereto.

The glass bubble may have a particle size of 10-40 μm or 15-30 μm. When the particle size is less than the above range, the average true density of the glass bubble increases, so that the sound insulation improvement effect is insignificant, and when it exceeds the above range Since the impact strength may be lowered and the glass bubbles may be damaged during processing, glass bubbles having an average diameter within the above range may be included.

In the present invention, the particle size means a diameter when the glass bubble has a spherical shape, and may mean a length of a major axis when divided into a major axis and a minor axis when the glass bubble has a shape other than the spherical shape.

The particle size of the glass bubble may be measured using a particle size analyzer (S3500, Microtrac).

In addition, the glass bubble may have an average true density of 0.4-0.55 g/cc or 0.42-0.5 g/cc. If it is less than the above range, the thickness of the shell surrounding the air layer of the glass bubble is thin and the impact strength is lowered, so that the glass bubble may be damaged during processing. Since the effect is insignificant, it may have an average true density within the above range.

In the present invention, the average true density means a quotient obtained by dividing the mass of the sample of the glass bubble by the true volume of the glass bubble of the mass measured by a gas pycnometer.

Specifically, the average true density is determined according to ASTM D2840-69 (“Average True Particle Density of Hollow Microspheres”) by using a pycnometer (as a specific example, AccuPcy 1330 from Micromeritics). It can be measured using

The glass bubble may be used in an amount of 5-18 parts by weight or 8-15 parts by weight based on 100 parts by weight of the polyvinyl chloride resin. If it is less than the above range, the effect of improving the sound insulation is insignificant, and if it exceeds the above range, the sound insulation and restoration may be excellent, but mechanical properties such as tensile strength and elongation at break are deteriorated, and there is a disadvantage of cost increase. can be used

The plasticizer may be at least one selected from the group consisting of a phthalate-based plasticizer, a terephthalate-based plasticizer, a benzoate-based plasticizer, a citrate-based plasticizer, a phosphate-based plasticizer, and an adipate-based plasticizer.

In addition, the plasticizer may be used in an amount of 40-80 parts by weight or 50-75 parts by weight based on 100 parts by weight of the polyvinyl chloride resin. If it is less than the above range, the workability of the tile flooring material is lowered, so construction is impossible without an adhesive, and the effect of improving the sound insulation is insignificant. This is lowered and can be used within the above range.

More specifically, in the present invention, the content of the plasticizer in the balance layer 10 is increased compared to the conventional tile flooring material, so that construction is possible on the floor surface without a separate adhesive, so that non-technical people can easily construct it.

The balance layer 10 may further include one or more additives selected from the group consisting of a heat stabilizer, a processing aid, a lubricant, and a flame retardant, and their types and contents are not particularly limited, but in one embodiment, the poly It can be used in an amount of 0.5-10 parts by weight based on 100 parts by weight of the vinyl chloride resin.

In addition, the balance layer 10 may have a thickness of 0.5-2mm or 0.6-1.8mm, and it is possible to prevent distortion and warpage of the tile flooring material within the above range, and to implement excellent sound insulation properties.

base layer (20)

The base layer 20 of the present invention is a layer that provides physical properties required as a tile flooring material such as dimensional stability and cutability, and is based on 100 parts by weight of polyvinyl chloride resin, 30-50 parts by weight of a plasticizer and 500-800 parts by weight of a filler may include

The polyvinyl chloride resin may have a polymerization degree of 650-1000 or 700-900, and has an effect of imparting excellent durability and mechanical properties to a tile flooring material while having excellent processability within the above range.

Since the plasticizer may be of the same kind as the plasticizer included in the above-described balance layer 10, the overlapping description will be omitted.

The plasticizer may be used in an amount of 30-50 parts by weight or 35-45 parts by weight based on 100 parts by weight of the polyvinyl chloride resin, and has an effect of providing excellent processability within the above range.

The filler may be at least one selected from the group consisting of calcium carbonate, wood powder, mica, amorphous silica, talc, zeolite, magnesium carbonate, calcium sulfate, calcium phosphate, magnesium phosphate, aluminum oxide, kaolin, ATH (Alumina trihydrate) and talc. In the present invention, as a specific embodiment, it is possible to use calcium carbonate, which is advantageous in terms of price and versatility, and which can increase heat resistance and durability.

The filler may be used in an amount of 500-800 parts by weight, or 600-750 parts by weight based on 100 parts by weight of the polyvinyl chloride resin. there is an effect

The base layer 20 may further include one or more additives selected from the group consisting of heat stabilizers, processing aids, lubricants and flame retardants, and the types and contents thereof are not particularly limited, but in one embodiment, the polychlorinated It can be used in an amount of 0.5-10 parts by weight based on 100 parts by weight of the vinyl resin.

In addition, the base layer 20 may have a thickness of 2-5 mm or 2.3-4.5 mm, and the dimensional stability and cutability of the tile flooring material are excellent within the above range.

Dimensional stabilization layer (30)

The dimensional stability layer 30 of the present invention is to impart excellent dimensional stability to a tile flooring material, and in one embodiment, a glass fiber sheet is impregnated with polyvinyl chloride sol (hereinafter referred to as 'PVC sol'). it could be

The glass fiber sheet may be a glass fiber woven or non-woven fabric, but is not limited thereto.

The PVC sol is an embodiment, based on 100 parts by weight of the polyvinyl chloride resin paste, 60-100 parts by weight or 65-90 parts by weight of dioctyl terephthalate, 10-80 parts by weight of calcium carbonate or 50-70 parts by weight and epoxy 1-6 parts by weight or 1-5 parts by weight of soybean oil.

The basis weight of the dimensional stability layer 30 may be 30-70 g/m ² , or 35-65 g/m ² , and within this range, the dimensional stability of the tile flooring material is excellent.

In addition, the thickness of the dimensional stability layer 30 may be 0.05-0.5mm or 0.1-0.3mm, and within the above range, the dimensional stability of the tile flooring material is excellent.

middle layer (40)

The stop layer 40 of the present invention is a layer serving to impart structural balance to the tile flooring material, and may include 30-50 parts by weight of a plasticizer, and a filler based on 100 parts by weight of the polyvinyl chloride resin.

The polyvinyl chloride resin may be the same as the polyvinyl chloride resin included in the balance layer 10 or the base layer 20 described above.

Specifically, in one embodiment, when using the same glass bubble as the balance layer 10 as the filler, the polyvinyl chloride resin included in the stop layer 40 is the same polyvinyl chloride resin as the balance layer 10 . Can be used.

The glass bubble may be used in an amount of 5-18 parts by weight or 8-15 parts by weight based on 100 parts by weight of the polyvinyl chloride resin, and within the above range, it is possible to provide better sound insulation to the tile flooring material.

In addition, in another embodiment, when the same filler as the base layer 20 is used as the filler, the polyvinyl chloride resin included in the stop layer 40 may use the same polyvinyl chloride resin as the base layer 20 . have.

The filler may be 50-150 parts by weight or 80-120 parts by weight based on 100 parts by weight of the polyvinyl chloride resin, and has the effect of imparting excellent mechanical properties and workability to the tile flooring material while maintaining an appropriate cost within the above range. have.

Since the plasticizer may be of the same kind as the plasticizer included in the above-described balance layer 10, the overlapping description will be omitted.

Specifically, the plasticizer may be used in an amount of 30-50 parts by weight or 35-45 parts by weight based on 100 parts by weight of the polyvinyl chloride resin, and has an effect of providing excellent processability within the above range.

The stop layer 40 may further include one or more additives selected from the group consisting of heat stabilizers, processing aids, lubricants and flame retardants, and the types and contents thereof are not particularly limited, but in one embodiment, the polychlorinated It can be used in an amount of 0.5-10 parts by weight based on 100 parts by weight of the vinyl resin.

When the stop layer 40 uses glass bubbles alone as the filler, the thickness may be 0.4-1.0 mm or 0.5-0.8 mm, and within the above range, structural balance is imparted to the tile flooring material as well as sound insulation properties. It has an excellent effect.

In addition, in this case, the balance layer 10 may have a thickness of 0.3-1.0 mm or 0.4-0.9 mm, and there is an effect of implementing excellent sound insulation within the above range.

Alternatively, when the stop layer 40 uses the same filler as the base layer 20 as a filler, the thickness may be 0.1-0.5 mm or 0.15-0.3 mm, and it is applied to the tile flooring material while maintaining an appropriate cost within the above range. It has the effect of imparting structural balance.

In addition, in this case, the balance layer 10 has a thickness of 1-2 mm or 1.2-1.8 mm, and it is preferable to manufacture it thicker than when the stop layer 40 includes glass bubbles, and within the above range, it is preferable to have an excellent difference. There is an effect that can implement voice.

printed layer (50)

The printed layer 50 of the present invention is a layer for imparting various appearance and design effects to the tile flooring material, and may include 20-40 parts by weight of a plasticizer and 20-30 parts by weight of a pigment based on 100 parts by weight of the polyvinyl chloride resin. .

Since the polyvinyl chloride resin and plasticizer may be of the same type as the polyvinyl chloride resin and plasticizer included in the base layer 20 described above, overlapping descriptions will be omitted.

The plasticizer may be used in an amount of 20-40 parts by weight or 25-30 parts by weight based on 100 parts by weight of the polyvinyl chloride resin, and has an effect of providing excellent processability within the above range.

The pigment may be, for example, titanium dioxide (TiO ₂ ), but is not limited thereto, and other pigments of a desired color may be used. The pigment may be used in an amount of 20-30 parts by weight or 25-30 parts by weight based on 100 parts by weight of the polyvinyl chloride resin, and has an effect of providing excellent color within the above range.

The printing layer 50 may further include one or more additives selected from the group consisting of heat stabilizers, processing aids, lubricants and flame retardants, and the types and contents thereof are not particularly limited, but in one embodiment, the polychlorinated It can be used in an amount of 0.5-10 parts by weight based on 100 parts by weight of the vinyl resin.

The print layer 50 may be formed through transfer printing on the surface of the white sheet or colored sheet laminated on the stop layer 40, but is not limited thereto and directly on the stop layer 40 It may be formed through gravure or screen printing.

The printed layer 50 may have a thickness of 0.01-0.5mm or 0.03-0.1mm, and various appearance and design effects may be imparted to the tile flooring material within the above range.

transparent layer (60)

The transparent layer 60 of the present invention is a layer that protects the printed pattern or pattern of the lower printed layer 50, and may include 10-40 parts by weight of a plasticizer based on 100 parts by weight of the polyvinyl chloride resin.

Since the polyvinyl chloride resin and plasticizer may be of the same type as the polyvinyl chloride resin and plasticizer included in the balance layer 10 described above, the overlapping description will be omitted.

The plasticizer may be used in an amount of 10-40 parts by weight or 15-30 parts by weight based on 100 parts by weight of the polyvinyl chloride resin, and has an effect of providing excellent processability within the above range.

The transparent layer 60 may further include one or more additives selected from the group consisting of a heat stabilizer, a processing aid, a lubricant and a flame retardant, and the type and content of these additives are not particularly limited, but in one embodiment, the polyvinyl chloride It can be used in an amount of 0.5-10 parts by weight based on 100 parts by weight of the resin.

The transparent layer 60 may have a thickness of 0.1-1.5 mm or 0.3-1.0 mm, and has an effect of protecting the printed layer 50 located below while maintaining an appropriate cost within the above range.

In addition, the tile flooring 1 of the present invention is selectively laminated on the transparent layer 60 to improve the scratch resistance and abrasion resistance of the tile flooring surface, and a UV coating layer (not shown) to prevent contaminants from adhering. may include more

The UV coating layer may be formed by coating a conventional photocurable resin, and the thickness thereof is not limited to 0.005-0.1mm or 0.01-0.05mm.

In addition, the present invention comprises the steps of forming a balance layer comprising a polyvinyl chloride resin, glass bubbles and a plasticizer; It relates to a method of manufacturing a tile flooring material comprising, sound insulation (ISO 10140-3) of Δ8-20 dB, and stability (ASTM F970) of 800-1700 psi.

The step of forming the balance layer may be a step of preparing the balance layer composition in a sheet shape by extrusion molding, calender molding or blow molding.

In the present invention, in one embodiment, calender molding with excellent productivity may be used. Specifically, after kneading the balance layer composition at 140-170°C or 150-165°C, the kneaded composition is calendered at a temperature of 160-170°C. A balance layer can be formed by passing a roll.

Since the balance layer composition is the same as the composition of the balance layer described above, the overlapping description will be omitted.

In addition, the manufacturing method of the tile flooring of the present invention is a base layer; dimensional stability layer; middle layer; printed layer; and forming a transparent layer.

Specifically, the dimensional stability layer may be prepared by impregnating a glass fiber sheet with PVC sol.

Since the PVC sol is the same as described above, the overlapping description will be omitted.

In addition, the base layer; middle layer; printed layer; And the transparent layer may be prepared in the form of a sheet or film by kneading the base layer composition, the stop layer composition, the printing layer composition, and the transparent layer composition, respectively, by extrusion molding, calender molding or blow molding.

In the present invention, in one embodiment, calender molding with excellent productivity may be used, and specifically, after kneading each composition at 140-170° C. or 150-165° C., the kneaded composition is calendered at a temperature of 160-170° C. Each layer can be formed by passing it through.

The composition of the base layer composition, the stop layer composition, the print layer composition, and the transparent layer composition is the same as the composition of the base layer, the stop layer, the print layer, and the transparent layer described above, so the overlapping description will be omitted.

In addition, the printing layer composition may refer to a composition of a white sheet or colored sheet, and in this case, the printed pattern or pattern may be transferred and printed on the white sheet or colored sheet.

In the present invention, an example of the case in which the printing layer is formed through transfer printing on the surface of a white sheet or colored sheet has been described, but the present invention is not limited thereto and may be directly formed on the stop layer through gravure or screen printing. .

In addition, the manufacturing method of the tile flooring material of the present invention is a balance layer sequentially manufactured from the bottom to the top; base layer; dimensional stability layer; middle layer; printed layer; and thermally laminating the transparent layer at a temperature of 150-170°C or 155-165°C.

In addition, optionally, the manufacturing method of the tile flooring material of the present invention may further include the step of forming a UV coating layer on the transparent layer that has undergone the plywood process.

The UV coating layer may be formed by coating a conventional photocurable resin, and the thickness thereof is not limited to 0.005-0.1mm or 0.01-0.05mm.

Hereinafter, preferred examples are presented to help the understanding of the present invention, but the following examples are merely illustrative of the present invention, and it will be apparent to those skilled in the art that various changes and modifications are possible within the scope and spirit of the present invention, It goes without saying that such changes and modifications fall within the scope of the appended claims.

[Example] Manufacturing of tile flooring

<Example 1>

(1) Balance layer, base layer, dimensional stability layer, stop layer, printing layer and transparent layer forming step

(Formation of balance layer)

10 parts by weight of glass bubble ¹⁾ (3M, iM16K) having a particle size of 12-40 μm and an average true density of 0.43-0.49 g/cc based on 100 parts by weight of polyvinyl chloride resin (LG Chem, LS 100) , 60 parts by weight of a plasticizer (LG Chem, DOTP), 3 parts by weight of a heat stabilizer (Songwon Industrial Co., SW-300) and 3 parts by weight of a processing aid (LG Chem, PA828) at 160° C. A layer composition was prepared.

Then, the balance layer composition was calendered at a temperature of 160° C. to form a balance layer having a thickness of 1.4 mm.

(Formation of base layer)

For 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 40 parts by weight of plasticizer (LG Chemical, DOTP), 650 parts by weight of calcium carbonate and 4 parts by weight of heat stabilizer (Songwon Industrial, SW-300) are half The base layer composition was prepared by kneading at 160° C. with a bari mixer.

Then, the base layer composition was calendered at a temperature of 160° C. to form a base layer having a thickness of 2.68 mm.

(Formation of dimensional stability layer)

Glass fiber nonwoven fabric is impregnated in PVC sol containing 100 parts by weight of paste polyvinyl chloride resin (LG Chem, PB1202), 80 parts by weight of plasticizer (LG Chem, DOTP), 60 parts by weight of calcium carbonate, and 2 parts by weight of epoxidized soybean oil to prepare a dimensionally stable layer having a basis weight of 60 g/m ² and a thickness of 0.20 mm.

(Formation of middle layer)

For 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 40 parts by weight of plasticizer (LG Chemical, DOTP), 100 parts by weight of calcium carbonate, and 4 parts by weight of heat stabilizer (Songwon Industrial, SW-300) A stop layer composition was prepared by kneading at 160° C. with a Bari mixer.

Then, the stop layer composition was calendered at a temperature of 160° C. to form a stop layer having a thickness of 0.15 mm.

(Formation of printed layer)

For 100 parts by weight of polyvinyl chloride resin (LG Chem, LS 080S), plasticizer (LG Chem, DOTP) 25 parts by weight, heat stabilizer (Songwon Industrial Co., SW-300) 3 parts by weight and pigment (TiO ₂ ) 25 A white sheet composition was prepared by kneading parts by weight at 160° C. with a Banbari mixer.

Then, the white sheet composition was calendered at a temperature of 160° C. to form a white sheet having a thickness of 0.07 mm.

Then, a print layer was formed by forming a print pattern on the surface of the white sheet through gravure printing or transfer printing.

(Formation of transparent layer)

For 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 100), 20 parts by weight of plasticizer (LG Chemical, DOTP) and 3 parts by weight of heat stabilizer (Songwon Industrial, SW-300) at 160° C. A transparent layer composition was prepared by kneading.

Then, the transparent layer composition was calendered at a temperature of 160° C. to form a transparent layer having a thickness of 0.5 mm.

(2) Plywood Step

Each layer prepared above sequentially from the bottom to the top, a balance layer; base layer; dimensional stability layer; middle layer; printed layer; And a transparent layer was laminated and thermally laminated at a temperature of 160° C. to prepare a tile flooring material having a thickness of 5.0 mm.

<Example 2>

A tile flooring material having a thickness of 5.0 mm was prepared in the same manner as in Example 1, except that the thickness of the base layer was 2.83 mm and the thickness of the balance layer was 0.7 mm, and the stop layer composition was used as follows.

(Formation of middle layer)

For 100 parts by weight of polyvinyl chloride resin (LG Chem, LS 100), plasticizer (LG Chem, DOTP) 40 parts by weight, glass bubble ¹⁾ (3M, iM16K) 10 parts by weight, heat stabilizer (Songwon Industrial, SW-300) 4 parts by weight and 3 parts by weight of a processing aid were kneaded at 160° C. with a Banbari mixer to prepare a middle layer composition.

Then, the stop layer composition was calendered at a temperature of 160° C. to form a stop layer having a thickness of 0.7 mm.

<Comparative Example 1>

A tile flooring material having a thickness of 5.0 mm was prepared in the same manner as in Example 1, except that the balance layer composition was used as follows.

(Formation of balance layer)

For 100 parts by weight of polyvinyl chloride resin (LG Chemical, LS 080S), 25 parts by weight of plasticizer (LG Chemical, DOTP), 60 parts by weight of calcium carbonate, and 3 parts by weight of heat stabilizer (Songwon Industrial, SW-300) are half A composition for preparing a balance layer was prepared by kneading at 160° C. with a bari mixer.

Then, the composition for preparing the balance layer was calendered at a temperature of 160° C. to form a balance layer having a thickness of 1.4 mm.

<Comparative Example 2>

All of the layers of Comparative Example 1 were maintained the same, but a tile flooring material further including a foam layer under the balance layer was prepared.

Specifically, after applying PVC sol to a thickness of 0.1-0.2 mm by rotary screen coating method so that a circle having a diameter of 10 mm is formed at an interval of 10 mm in the lowermost part (ie, the lower part of the balance layer) of the tile flooring material of Comparative Example 1 , and gelled at 160 °C for 15 seconds.

The PVC sol contains 0.5-3 parts by weight of a chemical foaming agent (ADCA), 50 parts by weight of a plasticizer (LG Chemical, DOTP) and a heat stabilizer (Songwon Industrial, SW-300) based on 100 parts by weight of PVC (LG Chemical, PB1202) 3 parts by weight was prepared by kneading at 160 ℃ in a Banbari mixer.

Then, it is put in a foaming oven at 200 ° C. to foam the foam layer sequentially from the bottom to the top; balance layer (0.7 mm: the sum of the thicknesses of the foam layer and the balance layer); base layer (2.63 mm); dimensional stability layer (0.3mm); stop layer (0.8 mm); printed layer (0.07 mm); and a tile flooring material having a thickness of 5.0 mm in which a transparent layer (0.5 mm) was laminated was prepared.

<Reference Example 1>

A tile flooring material having a thickness of 5.0 mm was prepared in the same manner as in Example 1, except that 3 parts by weight of glass bubble ¹⁾ included in the balance layer was used.

<Reference Example 2>

A tile flooring material having a thickness of 5.0 mm was prepared in the same manner as in Example 1, except that 25 parts by weight of glass bubble ¹⁾ included in the balance layer was used.

<Reference Example 3>

A tile flooring material having a thickness of 5.0 mm was prepared in the same manner as in Example 1, except that 30 parts by weight of the plasticizer included in the balance layer was used.

<Reference Example 4>

As a glass bubble included in the balance layer, a glass bubble ²⁾ (3M company, iM30K) having a particle size of 10-25 μm and an average true density of 0.6 g/cc was used. A tile flooring material of 5.0 mm was prepared.

[Experimental Example] Measurement of physical properties and workability of tile flooring

The sound insulation properties, restoration properties, tensile strength, elongation at break, and workability of the tile flooring materials of Examples 1-2, Comparative Example 1-2, and Reference Example 1-4 prepared above were measured, and the results are shown in Table 1 below. .

(1) For sound insulation, light impact sound was measured according to ISO 10140-3, and the reduced noise (ΔdB) compared to the control group was calculated. As a result, the light impact sound of the control group was 70-75 dB.

(2) For stability, a jig having a diameter of about 28.6 mm is placed on the top of the specimen (length and width of 50 mm x 50 mm) of the tile flooring material according to ASTM F970 and a constant pressure is applied for 1 day, and then the pressure After removing the , the thickness of the specimen was measured again after 1 day, and the maximum value of pressure when the change in thickness was less than 0.125 mm was measured.

(3) Tensile strength was measured in the longitudinal direction after biting a specimen of tile flooring (length and width of 165mm x 13mm) with a clamp of Universal Testing Machine (UTM, Instron) in accordance with ASTM D638.

(4) Elongation at break is measured in the longitudinal direction until the specimen of tile flooring (length, width 165mm x 13mm) breaks using a Universal Testing Machine (UTM) at room temperature (20-25℃) in accordance with ASTM D638. It was measured by stretching.

(5) The workability is indicated by the need for adhesive when installing the tile flooring material on the floor surface. If the tile flooring material floats or slides on the floor surface and an adhesive is required, mark X. If adhesive is not required, mark ○. did.

As confirmed in Table 1, the tile flooring materials of Examples 1 and 2 according to the present invention are excellent in sound insulation, restoration properties, tensile strength and elongation at break, and even if an adhesive is not used during construction, the tile may be lifted off the floor or It was confirmed that the workability of the tile flooring was excellent as no sliding phenomenon occurred.

On the other hand, unlike Examples 1 and 2, the tile flooring material of Comparative Example 1, in which the balance layer did not contain glass bubbles and had a small amount of plasticizer, had lowered sound insulation properties and required an adhesive when constructing the tile flooring material. could confirm that

In addition, compared to Comparative Example 1, the tile flooring material of Comparative Example 2, which further included a foaming layer at the bottom of the tile flooring material, had somewhat improved sound insulation, but it was confirmed that the foaming layer was pressed and the restoration properties were lowered.

In addition, compared with Examples 1 and 2, the tile flooring material of Reference Example 1 in which the balance layer contained a small amount of glass bubbles ¹⁾ had lowered sound insulation properties, and compared with Examples 1 and 2, the balance layer contained an excessive amount of glass bubbles ¹⁾ . In the included Reference Example 2, it was confirmed that the workability such as the balance layer was not torn or the surface was not flat, and the tensile strength and elongation at break required as a tile flooring material were not satisfied, which was not preferable.

In addition, as compared with Examples 1 and 2, the tile flooring material of Reference Example 3, in which the balance layer contained glass bubbles ¹⁾ but used a small amount of plasticizer, had lower sound insulation properties compared to Examples 1 and 2, and the adhesive when constructing the tile flooring material It was confirmed that the workability also deteriorated due to the need for

On the other hand, it was confirmed that the tile flooring material of Reference Example 4 using glass bubbles ²⁾ having a higher average true density compared to the glass bubbles ¹⁾ of Examples 1 and 2 had lower sound insulation properties compared to Examples 1 and 2.

1: Tile flooring
10: balance layer 20: base layer
30: dimensional stability layer 40: middle layer
50: printed layer 60: transparent layer

Claims (15)

A tile flooring material comprising a balance layer containing polyvinyl chloride resin, glass bubbles and a plasticizer,
The tile flooring may include a base layer sequentially on the balance layer; dimensional stability layer; middle layer; printed layer; and a transparent layer;
The thickness of each layer is 0.5-2 mm for the balance layer, 2-5 mm for the base layer, 0.05-0.5 mm for the dimensional stability layer, 0.4-1.0 mm or 0.1-0.5 mm for the stop layer, 0.01-0.5 mm for the printed layer, and 0.1-1.5 mm for the transparent layer. mm,
The balance layer contains 5-18 parts by weight of glass bubbles and 40-80 parts by weight of a plasticizer based on 100 parts by weight of polyvinyl chloride resin,
The tile flooring material has a sound insulation (ISO 10140-3) of Δ8-20dB, and a stability (ASTM F970) of 800-1700psi. The method of claim 1,
The tile flooring material has a sound insulation (ISO 10140-3) of Δ9-15dB, and a stability (ASTM F970) of 900-1600psi. The method of claim 1,
The tile flooring material has a tensile strength (ASTM D638) of 50-100kgf/cm ² A tile flooring material. The method of claim 1,
The tile flooring material is a tile flooring material having an elongation at break (ASTM D638, 20-25 ℃) of 30-80%. delete The method of claim 1,
The glass bubble is a tile flooring material having a particle size of 10-40 μm, and an average true density of 0.4-0.55 g/cc. The method of claim 1,
The stop layer is a tile flooring comprising a glass bubble. 8. The method of claim 7,
The balance layer has a thickness of 0.3-1.0mm, and the stop layer has a thickness of 0.4-1.0mm. The method of claim 1,
The balance layer has a thickness of 1-2 mm, and the middle layer includes calcium carbonate as a filler, and the tile flooring material has a thickness of 0.1-0.5 mm. forming a balance layer in a sheet shape through extrusion molding, calender molding, or blow molding using a balance layer composition including polyvinyl chloride resin, glass bubbles, and a plasticizer;
forming a base layer, a dimensional stability layer, a stop layer, a printing layer, and a transparent layer; and
thermally plying the balance layer, the base layer, the dimensional stability layer, the stop layer, the printed layer, and the transparent layer sequentially from the bottom to the top at a temperature of 150-170°C; including,
The balance layer composition comprises 5-18 parts by weight of glass bubbles and 40-80 parts by weight of a plasticizer based on 100 parts by weight of polyvinyl chloride resin,
The thickness of each layer is 0.5-2 mm for the balance layer, 2-5 mm for the base layer, 0.05-0.5 mm for the dimensional stability layer, 0.4-1.0 mm or 0.1-0.5 mm for the stop layer, 0.01-0.5 mm for the printed layer, and 0.1-1.5 mm for the transparent layer. mm, and
A method of manufacturing a tile flooring material having a sound insulation (ISO 10140-3) of Δ8-20dB and a stability (ASTM F970) of 800-1700psi. 11. The method of claim 10,
The step of forming the balance layer is a method of manufacturing a tile flooring material that is a step of calendering the balance layer composition. delete delete 11. The method of claim 10,
The step of forming the stop layer is a step of calendering a stop layer composition comprising 30-50 parts by weight of a plasticizer, and 50-150 parts by weight of calcium carbonate with respect to 100 parts by weight of the polyvinyl chloride resin. Way. 11. The method of claim 10,
The step of forming the stop layer is a step of calendering a stop layer composition comprising 30-50 parts by weight of a plasticizer, and 5-18 parts by weight of a glass bubble with respect to 100 parts by weight of the polyvinyl chloride resin. Way.

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