KR101801807B1 - deco-tile top sheet and preparing method thereof - Google Patents

Abstract

The present invention relates to a polypropylene resin composition comprising 20 to 70 parts by weight of a polypropylene resin, 0.1 to 1 part by weight of an antioxidant, 0.2 to 2 parts by weight of a UV stabilizer, 2 to 5 parts by weight of a surface modifying additive, To 1 part by weight; 10 to 50 parts by weight of a polyethylene acrylate copolymer resin, 10 to 50 parts by weight of a polybutene copolymer resin, 10 to 40 parts by weight of a petroleum resin, 0.1 to 1 part by weight of an antioxidant, and 10 to 50 parts by weight of a UV stabilizer And 0.2 to 2 parts by weight of an adhesive layer.
Therefore, since the surface layer and the adhesive layer are produced in a single process by the double T-dies extrusion method, a process of treating a separate adhesive for bonding is not necessary, and the process can be simplified.

Description

[0001] DESCRIPTION [0002] Deco-tile top sheets and their preparation [0003]

The present invention relates to a topcoat sheet comprising a polyolefin compound composition and a method of making the same.

In recent years, the European Union and the United States have tightened regulations on the use of polyvinyl chloride (PVC). As a result, countries around the world have attempted to develop various resins that replace polyvinyl chloride. However, Resin that is comparable to polyvinyl chloride has not been developed.

It has also been attempted to use an ionomer resin developed by DuPont in the United States as a material for replacing polyvinyl chloride, which is a material forming a top sheet of a decor tile. However, this material is a calender used for polyvinyl chloride It is impossible to apply the method and it is possible to produce only by the extrusion T-Dies method. Therefore, there is a limitation on the production equipment and it is difficult to adhere to the printing layer in the production of the dyed tile due to the poor adhesion with other polymers. The dimensional stability of a very deep decorative tile is very unstable and causes a problem in the shape retention of the decorative tile, and the use of the finished decorative tile is caused to cause a curling.

Also, since the price is high, the effect on the manufacturing cost of the deco tile is so great that it is difficult to use the deco tile because it causes a problem in economical efficiency of the deco tile.

On the other hand, Korean Patent Laid-Open Publication No. 2011-0014818 discloses a composition for the production of a surface layer of a decorative tile. In the invention, the styrene-butadiene copolymer is prepared by mixing 15 to 35 parts by weight of a styrene acrylate- A deca-tile top sheet comprising 20 to 50 parts by weight of an antioxidant, 0.1 to 1 part by weight of an antioxidant, 0.2 to 2 parts by weight of an ultraviolet stabilizer and 0.1 to 1 part by weight of a working lubricant, There is a problem that it is difficult to apply to a continuous process which is a production method of a dummy tile because the decolor tile pattern is not sharp and the rolling property of the sheet is bad due to high hardness and it is difficult to adhere to the printing layer, Disadvantages often arise when a printed decal tile is destroyed by a request .

In addition, there is a problem in that the cost of manufacturing the decorative tile is increased because the cutting waste that is necessarily generated when the decorative tile is produced can not be recycled to the decorative resin layer base resin.

Korean Patent Publication No. 2011-0014818

The present invention provides a decorative sheet top sheet made of a single sheet having a two-layer structure by simultaneously laminating a surface layer comprising a polypropylene ethylene copolymer resin and an adhesive layer using a double T-die extrusion method and a method for producing the sheet .

In order to achieve the above object, the present invention provides a polypropylene resin composition comprising 20 to 70 parts by weight of a polypropylene resin, 0.1 to 1 part by weight of an antioxidant, 0.2 to 2 parts by weight of a UV stabilizer, 5 to 5 parts by weight of a lubricant and 0.1 to 1 part by weight of a lubricant; 10 to 50 parts by weight of a polyethylene acrylate copolymer resin, 10 to 50 parts by weight of a polybutene copolymer resin, 10 to 40 parts by weight of a petroleum resin, 0.1 to 1 part by weight of an antioxidant, and 10 to 50 parts by weight of a UV stabilizer And 0.2 to 2 parts by weight of an adhesive layer.

The polypropylene ethylene copolymer resin contained in the surface layer and the adhesive layer is a polypropylene plastomer polymerized by a metallocene catalytic method and may have different physical properties due to differences in ethylene content.

The polypropylene resin may be a homopolypropylene (General Homo PP), a high crystal polypropylene copolymer (HCCP Homo PP), a high crystal block polypropylene copolymer (HCCP Block Copolymer PP), and a random copolypropylene ). ≪ / RTI >

The antioxidant may be at least one selected from the group consisting of 1,1,3-tris (2-methyl-4-hydroxy-5-tris-butylphenyl) butane, 1,3,5- Di-tert-butyl-4-hydroxyphenyl) propynate], bis [3, 5'- Butyl ester) glycol ester, 1,3,5-tris (3 ', 5'-di-tertiary-butyl-4'- (1H, 3H, 5H) trione, 3,5-di-t-butyl-4-hydroxyhydrocinnamate octadecyl, (2,4-di-tert-butylphenyl) phosphate, 9,10-dihydro-9-oxa-10-phosphapenin trene-10-oxide, cyclic neopentanetetraylbis Bis (3,5-di-tert-butylphenyl) phosphite, cyclic neopentanetetraylbis (2,4-di-tert- butylphenyl) - hydroxyhydro Cinnamoyl) hydrazine. ≪ / RTI >

The surface modifying additive may be at least one selected from the group consisting of silicone resin, fluorine wax, and polyolefin micro wax.

Further, the UV stabilizer may be selected from the group consisting of benzophenone, phenyl silicate, bis (2,2,6,6-tetramethyl-4-piperidinyl) sebacate, 2- (3'- 2-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3,5-di-t-butyl-2-hydroxyphenyl) (3'-trisary-butyl-2'-hydroxy-5'-methylphenyl) -5-chlorobenzotriazole and a hindered amine-based UV stabilizer (HALS ). ≪ / RTI >

The working lubricant may be any one selected from the group consisting of zinc stearate, oleamide, erucamide, ethylene bisstearamide, stearamide and behenamide.

The polyethylene acrylate copolymer resin may be at least one selected from the group consisting of a polyethylene acrylic acid copolymer resin, a polyethylene ethyl acrylate copolymer resin, and a polyethylene butyl acrylate copolymer resin.

The polybutene copolymer resin may be any one selected from the group consisting of a polyethylene propylene butene copolymer resin, a polyisobutene resin, and a polybutene-1 resin.

The petroleum resin may be any one selected from the group consisting of an aromatic petroleum resin, an aliphatic petroleum resin, and hydrogenated DCPD (Dicyclopetadiene).

According to the first aspect of the present invention, since the surface layer and the adhesive layer are produced in a single process by the double T-dies extrusion process, there is no need to process a separate adhesive for bonding, so that the process can be simplified have.

Secondly, since the top sheet of the deco tile includes the adhesive layer, the deco tile can be easily adhered to the printed layer during the processing of the deco tile, so that the printed layer can be prevented from being broken.

Third, it can recover the cutting waste that is necessarily generated in the production of the deco tile, so that the entire amount of the deco tile base layer resin can be recycled, thereby reducing the production process waste and lowering the production cost, thereby providing the ecotile top sheet which is eco- can do.

Fourth, providing a decorative sheet with excellent transparency can increase the clarity of the decorative tile pattern.

Fifth, since the deco-tile top sheet of the present invention does not use a separate solution type adhesive, harmful volatiles are not generated and environmental hormones such as PVC are not generated, which is very environmentally friendly.

Sixth, the deco-tile top sheet of the present invention exhibits superior physical properties to polyvinyl chloride in terms of economy, durability, weather resistance, abrasion resistance, scratch resistance and transparency, and can replace polyvinyl chloride.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a process for producing a polyolefin compound composition according to an embodiment of the present invention. FIG.
FIG. 2 is a schematic view showing a manufacturing process of a top sheet of a decor tile according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. These embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the invention to those skilled in the art. But does not mean that the technical idea and scope of the present invention are limited.

The present invention relates to a polypropylene resin composition comprising 20 to 70 parts by weight of a polypropylene resin, 0.1 to 1 part by weight of an antioxidant, 0.2 to 2 parts by weight of a UV stabilizer, 2 to 5 parts by weight of a surface modifying additive, To 1 part by weight; 10 to 50 parts by weight of a polyethylene acrylate copolymer resin, 10 to 50 parts by weight of a polybutene copolymer resin, 10 to 40 parts by weight of a petroleum resin, 0.1 to 1 part by weight of an antioxidant, and 10 to 50 parts by weight of a UV stabilizer And 0.2 to 2 parts by weight of an adhesive layer.

The polypropylene ethylene copolymer resin contained in the surface layer and the adhesive layer is a copolymer resin produced by the metallocene catalytic method and is used in both the surface layer and the adhesive layer of the decotyle top sheet. It is preferable to select resins having different physical properties depending on the difference in ethylene content.

In the case of producing a sheet having a two-layer structure by a double T-die extrusion method, the melt index of the resin used for each layer is the same in terms of production technology, but the double- The tile top sheet composition preferably has a melt index (ASTM D1238, 190 캜 / 2.16 kg, g / 10 min) of polypropylene ethylene copolymer resin used for the surface layer of 3 or more and a value of 2 or less that is used for the adhesive layer.

This is because the thickness of the top sheet of the decorative tile is required to be 250 탆 or more for the surface layer and 120 탆 or less for the adhesive layer. The disadvantages of the different melt indexes of the respective resin layers can be overcome by controlling the discharge amount of the extruder, respectively.

The softening point (ASTM D1525, 占 폚) of the above-mentioned decostyle top sheet is not lower than 70 占 폚 in the surface layer and not higher than 60 占 폚 in the adhesive layer, because the adhesive layer must be easily adhered to the decoy treading layer first.

In the case of the elongation (ASTM D 638,%), it is preferable to use a resin having a surface layer of 1,500 to 1,700 and an adhesive layer of 2,000 or more. This is because the composition It is effective to prevent the destruction of the printing layer with low elongation at the time of processing the decorative tile.

Even if the elongation percentage is 2,000% or more, the polyethylene propylene copolymer resin used in the double-layered decoupled top sheet according to the present invention does not easily shrink or expand due to heat, and the surface layer of the thicker decoupled tile is supported There is no problem in the dimensional stability of the decor tile.

In the case of hardness, it is preferable to select the surface layer having a Shore D 40 or more and the adhesive layer having a Shore A 70 or less. This is because the surface layer protects the entire déco tile to control the durability of the déco tile and the adhesive layer is adhered to the printing layer having a thickness of 120 탆 or less It is possible to prevent the printing layer from being broken.

The light transmittance (%) is 95 or more, which affects the sharpness of the printed layer of the finished product, so that the transmittance of light is high, and the better the transparency, the better the transparency is.

The properties of such polypropylene ethylene copolymer resins provide optimal properties for the decorative tile top sheet required for the production of high quality decorative tile tile end products, and the double t-dies extrusion technique Applicable.

The polypropylene resin may be selected from the group consisting of General Homo PP, High Crystal Polypropylene Copolymer (HCCP Homo PP), High Crystal Block Polypropylene Copolymer (HCCP Block Copolymer PP) and Random Copolymer PP) And at least one selected from the group consisting of

The polypropylene resin serves to enhance the mechanical properties, durability, abrasion resistance and scratch resistance of the surface layer of a top sheet of a decorative sheet made of the composition provided in the present invention. Since the melting temperature is higher than that of the adhesive layer, And serves to prevent the deco tile top sheet of the two-layer structure from being deformed by heat at the lapping processing temperature.

On the other hand, the polypropylene resin increases abrasion resistance and scratch resistance.

In addition, the polypropylene resin is excellent in compatibility with polypropylene ethylene copolymer resins and has a very low fogging of the resin (ASTM D1003, 1.0 or less), and can produce clear color and patterned decor tiles.

Since the flexural modulus (ASTM D790, Kgf / cm2) of a typical decor tile is between 7,000 and 15,000, the polypropylene resin is a low-polypropylene ethylene copolymer resin used for producing the surface layer of the decor tile top sheet composition The flexural modulus (ASTM D790, Mpa 100-600) is complemented to have a flexural modulus of 2,500 to 4,500, which is optimum for producing the surface layer of the composition for a decorative sheet.

If the bending modulus of elasticity is less than 2,000, the restoring force against external stress is lowered. If the flexural modulus exceeds 4,500, the degree of curing is excessively increased, which causes poor adhesion and adhesion at the time of application. In addition, the molding shrinkage rate is as low as 1.5% or less, and thus, it has properties suitable for producing a high-quality decor tile top sheet.

When the polypropylene resin is contained in an amount of less than 20 parts by weight, the flexibility is improved, but the abrasion resistance and scratch resistance are lowered. When the polypropylene resin is more than 70 parts by weight, the flexural modulus is excessively increased, And the transparency of the surface layer of the composition for a decorative sheet can be inhibited. And also reduces the adhesion to the adhesive layer when producing a composition for a topcoat sheet.

The antioxidant may be included in an amount of 0.1 to 1 part by weight based on 100 parts by weight of the polypropylene ethylene copolymer resin.

The antioxidant may be selected from the group consisting of 1,1,3-tris (2-methyl-4-hydroxy-5-tris-butylphenyl) butane, 1,3,5-trimethyl- -Tetra-butyl-4-hydroxybenzyl) benzene, tetrakis- [methylene 3- (3'5'-di- tert- butyl-4-hydroxyphenyl) propynate], bis [ Tert-butylphenyl) butyl ester] glycol ester, 1,3,5-tris (3 ', 5'-di-tris- (1H, 3H, 5H) trione, 3,5-di-t-butyl-4-hydroxyhydrocinnamate octadecyl, tris (2,4-di-tert-butylphenyl) phosphate, 9,10-dihydro 9-oxa-10-phosphapenin trene-10-oxide, cyclic neopentanetetraylbis Bis (3,5-di-tert-butylphenyl) phosphite, cyclic neopentanetetraylbis (2,4-di-tert-butylphenyl) Hydroxyhydrocinene Yl) it has from the group consisting of hydrazine can be characterized by one or more selected.

The antioxidant can prevent aging of the decotyle top sheet.

The UV stabilizer may be included in an amount of 0.2 to 2.0 parts by weight based on 100 parts by weight of the polypropylene ethylene copolymer resin.

The UV stabilizer may be selected from the group consisting of benzophenone, phenyl silicate, bis (2,2,6,6-tetramethyl-4-piperidinyl) sebacate, benzotriazole based 2- (3'-5'- 2-hydroxyphenyl) -5-chlorobenzotriazole, 2- (3,5-di-t-butylphenyl-2-hydroxyphenyl) (3'-tris-butyl-2'-hydroxy-5'-methylphenyl) -5-chlorobenzotriazole and a hindered amine-based ultraviolet stabilizer (HALS) , And the like.

The UV stabilizer selected from the above group can act to prevent discoloration by increasing the light resistance of the decotyle top sheet.

The surface modifying additive may be included in an amount of 2 to 5 parts by weight based on 100 parts by weight of the polypropylene ethylene copolymer resin.

The surface modifying additive may be at least one selected from the group consisting of silicone resin, fluorine wax, and polyolefin micro wax.

The surface modifying additive is excellent in compatibility with the polypropylene ethylene copolymer resin and the polypropylene resin and should not migrate to the surface.

The surface modifying additive selected from the above groups serves to compensate the abrasion resistance and scratch resistance by reducing the friction coefficient of the surface layer of the decotyle top sheet. The build- up phenomenon can be prevented and the generation of fish-eye of the deco-tile top sheet can be reduced.

When the surface modifying additive is added in an amount of 5 parts by weight or more, the adhesion strength between the surface layer of the deco-tile sheet and the adhesive layer can be lowered.

The working lubricant may be included in an amount of 0.1 to 1 part by weight based on 100 parts by weight of the polypropylene ethylene copolymer resin.

The processing lubricant may be any one selected from the group consisting of zinc stearate, oleamide, erucamide, ethylene bisstearamide, stearamide and behenamide.

When the working lubricant is used in an amount exceeding 1 part by weight, the adhesion between the surface layer of the decorative sheet and the adhesive layer can be reduced.

In addition, since the processing lubricant lowers the friction coefficient between the extruder cylinder and the composition for forming the screw and the deco tile top layer, it provides smooth extrusion during the extrusion process and prevents the remnants of the composition from being left in the cylinder and the screw, Thereby reducing the defective rate of the deco-tile top sheet.

The polyethylene acrylate copolymer resin may be contained in an amount of 10 to 50 parts by weight based on 100 parts by weight of the polypropylene ethylene copolymer resin of the adhesive layer.

The polyethylene acrylate copolymer resin may be at least one selected from the group consisting of a polyethylene ethyl acrylate copolymer resin and a polyethylene butyl acrylate copolymer resin.

Since the copolymer resin is an acrylate copolymer resin, it acts as an adhesion promoter for the adhesive layer of the composition for a topcoat sheet, and if it is used in an amount of 50 parts by weight or more, the tensile strength of the adhesive layer of the topcoat sheet decreases, So that the amount of use is preferably limited.

The polybutene copolymer resin may be contained in an amount of 10 to 50 parts by weight based on 100 parts by weight of the polypropylene ethylene copolymer resin of the adhesive layer. The polybutene copolymer resin may be selected from the group consisting of polyethylene propylene butene copolymer resin, polyisobutene resin, And one of them.

The polybutene copolymer resin serves to increase the hot melt adhesive strength and heat resistance of the adhesive layer. When the amount of the polybutene copolymer resin is more than 50 parts by weight, the sharpness of the adhesive layer resin of the decorative sheet is impaired, It is preferable that the amount of use is limited.

The petroleum resin may be included in an amount of 10 to 40 parts by weight based on 100 parts by weight of the polypropylene ethylene copolymer resin of the adhesive layer.

The petroleum resin may be any one selected from the group consisting of an aromatic petroleum resin, an aliphatic petroleum resin, and a dicyclopentadiene (DCPD).

The petroleum resin serves to increase the initial adhesion by imparting tackiness of the adhesive layer. The petroleum resin should be selected in consideration of the light resistance of the petroleum resin, compatibility with other polymers and toxicity, It may cause a problem that the sharpness of the composition adhesive layer resin for a decorative sheet for topcoat is blurred.

The decorative layer is formed of a polyolefin compound composition in a two-layered structure. The surface layer imparts durability to the decorative layer. The adhesive layer is highly adhesive to the print layer. Therefore, the adhesive layer can be heat- Continuous bonding is possible by the pressing method.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the scope of the present invention is not limited to the following examples.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view illustrating a process for producing a polyolefin compound composition of a composition for a topcoat of a toughened tile according to an embodiment of the present invention. FIG.

Referring to the drawings, the first kneaded mixture was kneaded using a kneader or a mixer, and the first kneaded composition was extruded by putting it into an extruder and melt mixing to prepare two kinds of polyolefin compound compositions.

First, polyolefin compound for surface layer was mixed and extruded. Extrusion conditions in the extruder are as follows.

Hopper temperature: room temperature

Cylinder temperature: 160 캜 to 170 캜

Adapter temperature: 180 ℃

Die temperature: 180 DEG C to 210 DEG C

Single screw type extruder: L / D = 36/1 or more

Twin screw type extruder: L / D = 26/1 or more

The composition extruded under the extrusion conditions was subjected to a water-cooling process, cut into pellets, dried, and then subjected to oil-water separation.

The polyolefin compound for the adhesive layer was mixed and extruded. The extrusion conditions in the extruder are as follows.

Hopper temperature: room temperature

Cylinder temperature: 130 ° C to 150 ° C

Adapter temperature: 160 ℃

Die Temperature: 160 캜 to 170 캜

Single screw type extruder: L / D = 36/1 or more

Twin screw type extruder: L / D = 26/1 or more

The composition extruded under the extrusion conditions was subjected to a water-cooling process, cut into pellets, dried, and then subjected to oil-water separation.

The prepared polyolefin compound composition was put into a vacuum dryer, and the moisture content of the polyolefin compound composition was made to be 50 ppm or less through vacuum drying at 80 ° C or less for the surface layer polyolefin compound composition and 50 ° C or less for the adhesive layer polyolefin compound composition.

FIG. 2 is a schematic view showing a manufacturing process of a top sheet of a decor tile according to an embodiment of the present invention.

Referring to the drawings, the polyolefin compound composition is extruded from two extruders and laminated to the surface layer and the adhesive layer through a T-die to produce a two-layer decorative sheet top sheet, And cooled to produce a single sheet.

At this time, there is a method of using a two-layer T-Dies having two lip structures on one T-Dies to bond the surface layer and the adhesive layer to each other through the lip while passing through the lip and passing through the polishing roll to form a single sheet There are two methods of discharging surface layer resin and adhesive layer resin through T-dies for each extruder, lamination in a polishing roll, and then passing through a cooling roll to produce a single sheet. It is difficult to adjust the thickness of the surface layer sheet and the adhesive layer sheet, and it is difficult to clean the dies. Therefore, the surface layer and the adhesive layer are not used in the above process, and an accurate and constant thickness of the surface layer and the adhesive layer Double T-dies system that adjusts the thickness of the top sheet by adjustment. Mouth, to manufacture a tile decor top sheet of a two-layer structure.

In each of the extruders, an automatic hydraulic screen mesh device, a metering pump device, and a resin dispensing method of T-dies are provided with an angle type so that the left-middle distribution of the resin is uniform, thereby making it possible to produce a composition for a high- .

≪ Example 1 > Preparation of polyolefin compound composition

40 parts by weight of random copolypropylene (SFC750: Lotte Chemicals), 10 parts by weight of pentaerythritol tetrakis [3- (3,5-di-tert-butylphenol) 0.4 part by weight of hindered amine (Ciba D # 944), 1.5 parts by weight of silicone resin (MB50-001: Dow Corning), 0.3 part by weight of fluorine 0.15 part by weight of wax (Z200: DuPont) and 1.5 parts by weight of zinc stearate were mixed and the adhesive layer was coated with a polyethylene acrylic acid copolymer resin (E # 5100: Action) relative to 100 parts by weight of a polypropyleneethylene copolymer resin (V # 6201FL: 10 parts by weight of polybutene-1 (# 8310: Basel), 10 parts by weight of petroleum resin (SU90: KOLON), 15 parts by weight of pentaerythritol tetrakis [3- (3,5- 0.25 part by weight of Ciba I # 1010) and 0.4 part by weight of hindered amine (Ciba D # 944) Preparing compositions were prepared.

≪ Example 2 > Preparation of polyolefin compound composition

25 parts by weight of random copolypropylene (# 530: SK Chemical), 100 parts by weight of pentaerythritol tetrakis (3- (3,5-di-tert- 0.25 part by weight of Ciba I # 1010), 0.35 part by weight of hindered amine (Ciba D # 944), 2.5 parts by weight of olefin wax (L-503NC: Lyon) (# 3427: DuPont) was added to 100 parts by weight of a polypropylene ethylene copolymer resin (D # 610: Mitsui), 0.1 part by weight of a polyester resin (Z200: DuPont) and 1.25 parts by weight of zinc stearate, 10 parts by weight of polybutene-1 (# 8301: Basel), 10 parts by weight of a petroleum resin (SU90: KOLON), 10 parts by weight of pentaerythritol tetrakis [3- (3,5- (Ciba I # 1010) and 0.4 parts by weight of hindered amine (Ciba D # 944) were added to prepare a composition for producing a deco-tile top sheet .

< Example 3> Polyolefin Compound  Composition manufacturing

40 parts by weight of random copolypropylene (# 4302: Korean emulsion), 100 parts by weight of pentaerythritol tetrakis [3- (3,5-di-tert- , 0.3 part by weight of hindered amine (Ciba D # 944), 2.1 parts by weight of silicone resin (MB50-001: Dow Corning) 2.1 parts by weight of an olefin wax (L-503NC: Lyon) and 1.5 parts by weight of zinc stearate were added to 100 parts by weight of a polypropylene ethylene copolymer resin (V # 2300: Dow) 10 parts by weight of a polypropylene butene copolymer resin (C600H: Hyosung), 10 parts by weight of a petroleum resin (SU100: KOLON), 10 parts by weight of pentaerythritol tetrakis [3- (3,5- 0.3 part by weight of Ciba I # 1010) and 0.4 part by weight of hindered amine (Ciba D # 944) An agent for preparing a composition was prepared.

<Experimental Example 1> Measurement of physical properties of polyolefin compound composition

The properties of the composition for the production of the double-layered decorated tile top sheet prepared in Examples 1 to 3 were measured and are shown in Table 1 below.

division layer Melt Index
(190 DEG C / 2.16 kg,
ASTM D1238) Melting point
(ASTM
D3428) Softening point
(ASTM
D1525) The tensile strength
(ASTM
D638) Elongation rate
(ASTM
D638) Flexural Modulus
(ASTM D790) Example 1
Surface layer 4.9 g / 10 min 110 ° C 75 ℃ 190kgf / cm2 1,340% 2,950 kgf / cm 2 Adhesive layer 2.4 g / 10 min 85 ℃ 57 ℃ - 1,800% - Example 2
Surface layer 4.4 g / 10 min 105 ℃ 75 ℃ 200kgf / cm2 1,620% 2,660 kgf / cm 2 Adhesive layer 1.6 g / 10 min 83 ℃ 53 ℃ - 1,000% - Example 3
Surface layer 3.6 g / 10 min 128 ° C 94 ° C 210kgf / cm2 1,330% 3,950 Kgf / cm2 Adhesive layer 2.5 g / 10 min 76 ° C 53 ℃ - 725% -

< Example 4> 2 floors  Manufacture of Deco Tile Top Sheet of Structure

 The polyolefin compound prepared in Example 1 was placed in a surface layer extruder (? 150 mm) and an adhesive layer extruder (? 100 mm), and each extruder was subjected to a double T-dies extrusion method under the condition of raising the temperature by 10 ° C Layer structure having a total thickness of 300 占 퐉 (surface layer: 240 占 퐉, adhesive layer: 60 占 퐉).

< Example 5> 2F  Manufacture of Deco Tile Top Sheet of Structure

Using the polyolefin compound prepared in Example 2, a composition for a topcoat sheet having a two-layer structure was prepared in the same manner as in Example 4.

Example 6 Production of a Deco Tile Top Sheet of a Two-Layer Structure

Using the polyolefin compound prepared in Example 3, a composition for a two-layer structure of a deco-tile top sheet was prepared in the same manner as in Example 4.

< Experimental Example  2> Properties of Deco Tile Top Sheet with 2 Layers

The properties of the composition for a two-layer structure deco-tile top sheet prepared in Examples 4 to 6 were measured and are shown in Table 2 below.

Metrics
Test Methods
unit
result Example 4 Example 5 Example 6 The tensile strength ASTM D638 kgf / cm2 200 205 215 Cloudiness ASTM D1009 % 5 or less 6 or less 6 or less Shrinkage rate KY Method % 1.5 1.4 1.4 Surface Wear Intensity Taber 1.5Kg *
500 times g 7 5 5 Heat fusion initiation temperature KY Method ℃ 75 74 70 Adhesion KSM ISO2411 kgf / cm2 2.8 3.2 3.5

As shown in Tables 1 and 2, the composition for a topcoat of a deco-tile according to the present invention has an optimum physical property suitable for the production of a double-layered structure by a direct thermal pressing method in the process of producing a deco tile, It was confirmed that the decorative sheet of the present invention can be replaced with a decorative sheet.

While the invention has been described with reference to a limited number of embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (10)

40 parts by weight of random copolypropylene, 0.3 part by weight of pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenylpropionate)], 100 parts by weight of hindered polypropylene 0.4 parts by weight of diamine, 2.1 parts by weight of silicone resin, 2.1 parts by weight of olefin wax and 1.5 parts by weight of zinc stearate; And
10 parts by weight of a polyethylene acrylic acid copolymer resin, 10 parts by weight of a polypropylene butene copolymer resin, 10 parts by weight of a petroleum resin, 10 parts by weight of pentaerythritol tetrakis [3- (3,5-di-t-butyl -4-hydroxyphenylpropynate)] and 0.4 part by weight of hindered amine. The method according to claim 1,
The polypropylene ethylene copolymer resin contained in the surface layer and the adhesive layer is a polypropylene plastomer polymerized by a metallocene catalytic method and has different physical properties due to differences in ethylene content. delete delete delete delete delete delete delete The method according to claim 1,
Wherein the petroleum resin is any one selected from the group consisting of an aromatic petroleum resin, an aliphatic petroleum resin, and a hydrogenated dicyclopetadiene.

Images