KR20190137746A - Flooring tile for telegraph elimination and a process for the preparation thereof - Google Patents

Abstract

The present invention provides an anti-transfer floor tile comprising a printed layer, a high-hardness layer, and an underlayer, and a method for manufacturing the same. The floor tile has no surface transfer phenomenon by including the high-hardness layer and has high mechanical strength.

Description

Flooring tile for preventing transfer and its manufacturing method {Flooring tile for telegraph elimination and a process for the preparation

The present invention relates to a transfer preventing flooring tile having no surface transfer phenomenon and a method of manufacturing the same.

In the case of general floor materials, especially LVT (Luxury vinyl tile) floor tiles, if there are irregularities or foreign substances on the floor surface of the building structure due to the manufacturing process and product characteristics, floors such as irregularities or marks on the surface of the flooring tiles after the flooring tiles are applied There was a problem that the mark of the cotton is transferred as it is.

In order to compensate for this, a method of applying an underfloor or an underlayer, which is a foam material or a non-foaming material, to a floor surface first and then a floor tile is proposed. However, this method has a problem in that the work time, labor costs, etc. increase because the construction in two steps, it can be applied only to non-adhesive products such as products that fit together, and using adhesive or loose lay There is a limitation that cannot be applied to the product.

In addition, Korean Utility Model Registration No. 20-0263231 has proposed a technique that can prevent the surface transfer phenomenon caused by foreign substances present on the floor by artificially forming a recess in the bottom surface of the floor material so that the floor material is floating from the floor surface. However, even if the unevenness is given according to the above technique, if the hardness of the lower portion is low, the softness (soft) is in close contact with the floor with prolonged use, so that the unevenness or bend of the bottom surface is transferred to the surface.

In addition, a method of solving the transfer problem to the surface by forming a foam layer on the bottom of the bottom member to accommodate the concave-convex shape of the bottom surface has been proposed. The problem of poor restoring force and poor appearance may be caused by pressing marks on the pressing part when the surface is pressed.

In order to improve this, Korean Patent Publication No. 2017-0063012 discloses a technique of using two or more foam layers having different foaming rates or different foaming materials, but in this case, an adhesive or an adhesive process is used to bond different layers. In addition, there is a problem that the cost increases by adding, the process is complicated by making each layer individually, and a separate facility is required.

Utility Model Registration No. 20-0263231 Patent Publication No. 2017-0063012

One object of the present invention is to provide a flooring tile excellent in dimensional stability, curling, pressing, residual indentation amount and strength without the problem that the bottom surface irregularities and foreign matter is transferred to the tile surface.

Another object of the present invention is to provide an environmentally friendly flooring tile and a method of manufacturing the same by minimizing the use of plasticizers and simplifying the process without using an adhesive in the interlayer bonding of the tiles.

One example of the present invention to achieve the above object is

A transfer preventing flooring tile comprising a print layer, a hard layer, and an underlayer,

The printing layer, the high hardness layer, the base layer is polyethylene resin, polypropylene resin, ABS resin, polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, ethylene-vinylacetate copolymer, At least one polymer resin selected from the group consisting of ethylene propylene copolymer, thermoplastic polyurethane (TPU),

The high hardness layer includes 5 to 20 phr of PVC plasticizer, 50 to 300 phr of filler,

The high hardness layer has a content ratio of plasticizer and filler (plasticizer: filler) of 0.02 to 0.4: 1 by weight,

The specific gravity of the high hardness layer is 1.5 to 2.5

Provide a transfer preventing flooring tile.

Another example of the present invention

(a) preparing a print layer and a base layer,

(b) forming a high hardness layer into a sheet, and then laminating an underlying layer under the sheet and a printed layer on the sheet in order;

It provides a method of manufacturing the transfer preventing flooring tile comprising a.

According to the present invention, it is possible to provide a flooring tile having no surface transfer phenomenon, high mechanical strength, and excellent dimensional stability and anti-curling properties (bending stability) by including a high hardness layer.

According to the present invention, due to the excellent dimensional stability of the flooring tile, there is no gap between tiles after construction, thereby suppressing the occurrence of contamination and improving the ease of cleaning.

According to the present invention, it is possible to provide excellent interlayer bonding force and production efficiency by integrating each layer produced by using a calendering method sequentially or at the same time through a lamination process.

According to the present invention, it is possible to provide an environmentally friendly flooring tile because the use of plasticizer is minimized and no adhesive is used.

In addition, by using the thermal welding method, the process and cost can be significantly reduced compared to the adhesive crimping method, and the contamination of the tile surface caused by the use of excess adhesive and the occurrence of contamination due to the migration of the adhesive from the lower layer to the surface layer can be prevented. Therefore, the appearance defects can be reduced, and environmentally friendly can be given by drastically lowering the concentration of Total Volatile Organic Compound (TVOC) that can occur in the tile.

1 illustrates a floor tile having a multilayer structure according to an embodiment of the present invention.
2 illustrates a flooring tile according to another embodiment of the present invention, in which an upper layer is further included in the flooring tile of FIG. 1.
3A and 3B illustrate a flooring tile according to another embodiment of the present invention, in which an upper layer and a stop layer are further included in the flooring tile of FIG. 1.
4A to 4C illustrate a flooring tile according to another embodiment of the present invention, wherein the flooring tile of FIG. 1 further includes an upper layer, a middle layer, and a dimensionally stable layer.
5A to 5C illustrate a flooring tile according to another embodiment of the present invention, in which an upper layer, a middle layer, and a middle ground layer are additionally included in the flooring tile of FIG. 1.
6A to 6D illustrate a flooring tile according to another embodiment of the present invention, wherein the flooring tile of FIG. 1 further includes an upper layer, a middle layer, a dimensional stabilization layer, and a middle ground layer.

Hereinafter, a floor tile according to an embodiment of the present invention will be described with reference to the drawings.

In the drawings, the thickness or size of each layer is exaggerated for convenience and clarity of description, and like reference numerals refer to like elements in the drawings. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. Also, as used herein, "comprise" and / or "comprising" specifies the presence of the mentioned shapes, numbers, steps, actions, members, elements and / or groups of these. It is not intended to exclude the presence or the addition of one or more other shapes, numbers, acts, members, elements and / or groups.

In the present invention, the tile may be used as a building material, for example, a wall material or a floor material. It can be used as a wall or floor in an office or a house, especially as a floor.

[1] Aspect of the present invention

Flooring tiles according to an embodiment of the present invention includes a high hardness layer. Here, the high hardness layer is laminated under the printed layer, it may form a structure of the base layer under the high hardness layer (Fig. 1).

Hereinafter, each layer which comprises a tile is described.

<Printing layer>

In one embodiment of the present invention, the printing layer may include a polymer resin, a filler and an additive. Various designs and materials may be used for the printed layer, thereby providing a visual effect. For example, printing paper, veneer, stone, beads and the like can be used.

The printing layer is polyethylene resin, polypropylene resin, ABS resin, polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, ethylene-vinylacetate copolymer, ethylene propylene copolymer, thermoplastic polyurethane (TPU At least one polymer resin selected from the group consisting of

The filler includes one or more selected from the group consisting of calcium carbonate, silica, alumina, lysate, talc, antimony oxide, aluminum oxide, fly ash, barium sulfate and blast furnace slag.

The additives include one or more selected from the group consisting of plasticizers, stabilizers, pigments and flame retardants.

The thickness of the printed layer is 0.05 to 0.25 mm, preferably 0.07 to 0.15 mm. If the thickness of the printed layer is less than 0.05 mm, there is a fear that the concealing force is lowered, the color of the other layer located under the light, and if it exceeds 0.25 mm, the economy is inferior.

<High Hardness Floor>

The high hardness layer is a layer that can prevent the surface transfer phenomenon to the surface of the flooring material due to foreign matter or irregularities of the bottom surface, and can provide an effect of improving physical properties such as excellent mechanical strength and dimensional stability and curling (bending stability).

The high hardness layer of the present invention increases the strength by reducing the content of the plasticizer and at the same time gives less environmentally friendly products by containing less volatile organic materials. Therefore, the tile including the high hardness layer of the present invention is characterized in that it is environmentally friendly, light and high strength compared to the conventional building materials.

The high hardness layer is polyethylene resin, polypropylene resin, ABS resin, polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, ethylene-vinylacetate copolymer, ethylene propylene copolymer, thermoplastic polyurethane (TPU) at least one polymer resin selected from the group consisting of. Preferably, polyethylene terephthalate (PET) or polyvinyl chloride (PVC) resin, which is one of polyester resins, is used, and most preferably polyvinyl chloride resin is used.

When the polyvinyl chloride resin is used as the high hardness layer, the degree of polymerization is preferably 700 to 2000. If the polymerization degree is lower than the above range, there is a problem that the mechanical properties are inferior, if the polymerization degree is exceeded, there is a problem that the processing temperature is high, that is, the problem is poor. It is more preferable that the degree of polymerization is 800 to 1300.

The high hardness layer preferably contains 5 to 20 phr of a plasticizer and 50 to 300 phr of a filler. The high hardness layer uses a hard material to give the product itself solid and hard to give the product itself. The high hardness layer is high in mechanical strength and excellent in resistance to dimensional deformation, it is excellent in dimensional stability and can minimize the occurrence of curling. By minimizing dimensional deformation, gaps between tiles, for example floorings, do not open, reducing contamination and ensuring ease of cleaning. Building materials containing such hard layers, for example floorings, provide a hard and firm feel, such as wood.

The filler includes one or more selected from the group consisting of calcium carbonate, silica, alumina, lysate, talc, antimony oxide, aluminum oxide, fly ash, barium sulfate and blast furnace slag.

The plasticizer and filler content may vary depending on the hardness and the content of each component.

It is preferable that specific gravity of the said high hardness layer is 1.5-2.5. If the specific gravity is less than 1.5, an increase in load and process defects may occur, and if the specific gravity exceeds 2.5, product defects may occur due to low bonding strength between raw materials.

The high hardness layer may be provided under the print layer, under the middle layer, under the middle layer, and under the dimensional reinforcement layer (GF layer).

The thickness of the high hardness layer can be adjusted according to the thickness of the other layer, the desired purpose, properties and the like.

The high hardness layer may further include one or more additives selected from the group consisting of a stabilizer, a processing aid, an internal lubricant, an external lubricant, and a pigment in addition to the polymer resin, the plasticizer, and the filler.

In one embodiment of the present invention, the high hardness layer is preferably 1 to 10 phr stabilizer, 50 to 300 phr filler, 0.1 to 10 phr processing aid, 0.1 to 5 phr internal lubricant, 0.01 to 5 phr external lubricant and 0.05 pigment. To 15 phr, more preferably 2 to 7 phr stabilizer, 70 to 200 phr filler, 0.5 to 7 phr processing aid, 0.3 to 2 phr internal lubricant, 0.01 to 1 phr external lubricant and pigments 2 to 7 phr may be included.

The amount of plasticizer included in the high hardness layer of the present invention is preferably 5 to 20 phr. When the amount of plasticizer used is less than 5 parts by weight, the mechanical strength and dimensional stability is excellent, but there is a problem inferior in workability, and when the amount of plasticizer used exceeds 20 phr, there is a problem in that mechanical properties, dimensional stability and environmental friendliness are inferior. The high hardness layer of the present invention increases the strength by reducing the content of the plasticizer and at the same time gives less environmentally friendly products by containing less volatile organic materials. Therefore, the tile including the high hardness layer of the present invention has the characteristics of high environmental strength and strength compared to the conventional building materials.

The amount of the stabilizer included in the high hardness layer of the present invention is 1 to 10 phr, preferably 2 to 7 phr. If the amount of stabilizer used is less than 1 phr, thermal stability may be poor, causing discoloration of the product.

In addition, the amount of the filler included in the high hardness layer of the present invention is preferably 50 to 300 phr. When the amount of filler used is less than 50 phr, the economy is inferior, and when it exceeds 300 phr, mechanical properties and processability are remarkably inferior.

In particular, the high hardness layer, the content ratio (plasticizer: filler) of the plasticizer and the filler is preferably from 0.02 to 0.4: 1 by weight, more preferably from 0.05 to 0.2: 1. When the content ratio of the plasticizer and the filler exceeds 0.4: 1, that is, when the content of the plasticizer to the filler is higher than the filler, the strength is low, so that the sufficient transfer preventing effect is not obtained, and the content ratio of the plasticizer and the filler is less than 0.02: 1, that is, the filler to the filler If the plasticizer content is small, there is a problem of poor workability.

In the case of the processing aid included in the high hardness layer of the present invention, 0.1 to 10 phr is used, preferably 0.5 to 7 phr. If the amount of processing aid is less than 0.1 phr, the workability is poor, the surface defects of the product occurs, and if it exceeds 10 phr, the economic efficiency is poor.

In addition, the inner lubricant included in the high hardness layer of the present invention is 0.1 to 5 phr, the outer lubricant is used 0.01 to 5 phr, preferably 0.3 to 2 phr for the inner lubricant, 0.01 to 1 phr for the outer lubricant Use Extrusion load increases when the amount of internal lubricant is less than 0.1 phr, and economics are lower when it exceeds 5 phr. If the amount of the external lubricant is less than 0.01, the possibility of carbide inside the extruder is more likely to occur, and if it exceeds 5 phr, the lubricant is transferred to the surface of the product, resulting in poor product properties.

In the case of the pigment included in the high hardness layer of the present invention, 0.05 to 15 phr is used, preferably 2 to 7 phr. When the amount of the pigment used is less than 0.05 phr, it is difficult to obtain the target opacity or color, and when the amount of the pigment exceeds 15 phr, the economy is inferior.

In one embodiment of the present invention, the plasticizer is dioctyl phthalate (DOP), diisononyl phthalate (DINP), diisodecyl phthalate (DIDP), diundecyl phthalate (diundecyl phthalate , DUP), trioctyl trimellitate (TOTM), dioctyl adipate (DOA), dioctyl terephthalate (DOTP), 1,2-cyclohexane dicarboxylic acid diisononyl 1,2-cyclohexane dicarboxylic acid diisononyl ester (DINCH), dipropylheptylphthalate (DPHP), acetyltributylcitrate (ATBC), vegetable plasticizer and benzoate (Benzoate) Dioctyl terephthalate (DOTP), which includes one or more and preferably is an environmentally friendly plasticizer, but is not limited thereto.

In one embodiment of the present invention, the stabilizer comprises at least one selected from the group consisting of a talc gemstone stabilizer, an organotin complex stabilizer and an epoxy stabilizer, the talc gemstone stabilizer is for example Ba / Zn, Ca It includes one or more selected from the group consisting of / Zn and Na / Zn, and is preferably an environmentally friendly Ca / Zn, but is not limited to these.

In one embodiment of the present invention, the filler comprises one or more selected from the group consisting of calcium carbonate, silica, alumina, calcite, talc, antimony oxide, aluminum oxide, fly ash and blast furnace slag, preferably calcium carbonate , But not limited to one or more selected from the group consisting of haemulseok and mixtures thereof.

In one embodiment of the present invention, the processing aid is used to increase the melt rate and viscosity, and to improve the melt uniformity and processability, acrylic polymer, styrene copolymer, mineral oil, petrolatum, paraffin wax, petroleum resin , At least one selected from the group consisting of fatty acids, fatty acid esters, fatty alcohols, metal soaps, fatty acid amides, phenol resins, polyethylene, polybutenes, organosilicones, preferably acrylic polymers, styrene copolymers and One or more selected from the group consisting of mixtures, but not limited to these.

In one embodiment of the present invention, the lubricant is an internal lubricant that lowers the viscosity of the molten resin to improve the fluidity during the thermoplastic resin thermoforming, and reduces the friction between the molten resin and the processing machine in the processing machine It can be separated by an external lubricant which reduces the generation of carbides and facilitates the removal from the processing machine. Typically, lubricants are non-polar long chain hydrocarbons, paraffin oil, natural paraffin, polyethylene wax, fatty acid stearic acid, hydroxide stearic acid, fatty acid amide stearic acid amide, oleic acid amide, ercinate amide, fatty acid ester butyl stearate, glycerol Monostearate, fatty acid alcohols, and at least one selected from the group consisting of cetyl alcohol, stearic alcohol and palmityl alcohol, preferably the internal lubricant is fatty acid ester or fatty alcohol based, and the external lubricant is fatty acid amide Or one or more selected from the group consisting of fatty acids or mixtures thereof, but is not limited thereto.

In one embodiment of the present invention, the pigment is used to improve hiding power, and includes at least one selected from the group consisting of organic pigments, inorganic pigments and mixtures thereof having various colors. Inorganic pigments are preferably annatase sugar (TiO ₂ ) or rutile sugar (TiO ₂ ), more preferably rutile sugar (TiO ₂ ), but are not limited thereto. no.

<Base layer>

In one embodiment of the present invention, the base layer may include a polymer resin, a filler and an additive. The base layer is seated on the floor and secondaryly assists in preventing warpage of the flooring material.

The base layer may be polyethylene resin, polypropylene resin, ABS resin, polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, ethylene-vinylacetate copolymer, ethylene propylene copolymer, thermoplastic polyurethane ( TPU) at least one polymer resin selected from the group consisting of.

The filler includes one or more selected from the group consisting of calcium carbonate, silica, alumina, lysate, talc, antimony oxide, aluminum oxide, fly ash, barium sulfate and blast furnace slag.

The additives include one or more selected from the group consisting of plasticizers, stabilizers, pigments and flame retardants.

In addition, the underlying layer may include a plurality of irregularities on the lower surface. When a plurality of irregularities are included in the lower surface of the underlayer, the moisture or gas may be easily discharged. Thus, the deformation of the flooring may be efficiently reduced, thereby limiting the construction site.

The thickness of the base layer is 0.1 to 2 mm, preferably 0.1 to 1.0 mm. If the thickness of the base layer is less than 0.1 mm, it is not suitable for the prevention of warpage of the flooring material, and if it exceeds 2 mm, the economy is inferior.

The printing layer, the high hardness layer and the base layer are each independently polyethylene resin, polypropylene resin, ABS resin, polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, ethylene vinyl acetate copolymer and It is preferred to use at least one polymeric resin selected from the group consisting of ethylene propylene copolymers, wherein these layers use the same polymeric resin.

In addition, the printing layer, high hardness layer and the base layer may each independently include one or more additives selected from the group consisting of plasticizers, stabilizers, fillers and pigments.

[Other Aspects of the Invention]

Another aspect of the invention provides a flooring tile further comprising an upper layer on top of the printed layer. (FIG. 2) Another aspect of the invention provides one or more stop layers on or below the high hardness layer of FIG. It further provides a flooring tile comprising (Fig. 3a, 3b) another aspect of the invention may further include a surface coating layer on top of the upper layer (not shown). Provides a flooring tile, further comprising an upper layer, a middle layer, and a dimensionally stable layer (fiberglass layer) in the flooring tile of FIG. 1 (FIGS. 4A-4C).

Another aspect of the present invention provides a flooring tile, further comprising an upper layer, a middle layer, and a middle ground layer in the flooring tile of FIG. 1 (FIGS. 5A-5C).

Another aspect of the present invention provides a flooring tile, further comprising an upper layer, a middle layer, a dimensional stabilization layer (glass fiber layer), and a middle ground layer in the flooring tile of FIG. 1 (FIGS. 6A-6D).

The bonding between the layers is used without laminating an adhesive, and the printing layer and the upper layer are sequentially stacked on the high hardness layer, and are preferably manufactured to be bonded to each other by performing thermal fusion.

In addition, the stop layer and the base layer, or between the stop layer and the intermediate layer may further include a dimensionally stable layer (Figs. 4a to 4c, 6a to 6c).

For example, glass fibers may be used as the dimensionally stable layer. The glass fiber layer (GF layer) is to provide dimensional stability corresponding to heating or humidification. Examples of the glass fiber nonwoven fabric impregnated with polyvinyl chloride resin include, but are not limited thereto (FIGS. 4A to 4C and 6A to 6).

In addition, the lower layer may further include a noise prevention layer (not shown).

Accordingly, the flooring tile according to an embodiment of the present invention, in addition to the high hardness layer that provides the surface transfer prevention function and the dimensional stability and the anti-curling function, to protect the upper layer from the outside, the surface coating layer, printing to prevent contamination of the surface, Upper layer that protects and gives a three-dimensional appearance, a printed layer that provides a visual effect, a stop layer that has noise suppression and seating capabilities, an underlying layer that rests on the floor and helps to prevent curling, and It may further include a noise prevention layer to prevent noise transmission. Such tiles may be square or rectangular in plate shape, but are not limited thereto.

The following describes each of these layers not described above.

<Surface Coating Layer>

The surface coating layer serves as a layer for protecting the surface of the upper layer by blocking ultraviolet rays, preventing discoloration of the upper layer and the printing layer, and effectively reducing damage, abrasion, and contamination, and is aesthetically transparent. It may be coated with a polyurethane or acrylic resin.

<Upper layer>

In one embodiment of the present invention, the upper limb layer is generally a transparent film layer that protects the printed layer from abrasion, thereby giving a three-dimensional effect. The upper limb layer may include a polymer surface and an additive as a functional surface layer and a functional coating layer. The additives include one or more selected from the group consisting of plasticizers, stabilizers and UV absorbers.

Here, the thickness of the upper limb layer is 0.1 to 1.2 mm, preferably 0.1 to 0.7 mm. If the thickness of the upper layer is less than 0.1 mm, wear resistance is not suitable, and if the thickness of the upper layer is more than 1.2 mm, economic efficiency is poor.

<Middle Floor>

In one embodiment of the invention, the stop layer may comprise a polymer resin, filler and additives. The middle layer provides the noise prevention function that prevents the transmission of noise secondly and the ability to settle on the floor through high specific gravity, and improves the elasticity of the final product and reduces the manufacturing cost. The additives include one or more selected from the group consisting of plasticizers, stabilizers, pigments and flame retardants.

The filler includes at least one selected from the group consisting of calcium carbonate, silica, alumina, calcite, talc, antimony oxide, aluminum oxide, fly ash, barium sulfate and blast furnace slag, preferably calcium carbonate or calcite stone, but known Various types of fillers can be selectively applied.

The thickness of the stop layer is 0.1 to 3 mm, preferably 0.1 to 1 mm. If the thickness of the stop layer is less than 0.1 mm, the noise prevention effect, seating and elasticity is insufficient, and if it exceeds 3 mm, the thickness of the entire product becomes thicker than necessary.

<Noise prevention layer>

In one embodiment of the present invention, the noise protection layer comprises a polymer resin and a filler. The polymer resin is polyethylene resin, polypropylene resin, ABS resin (Acrylonitril-butadiene-styrene), polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, rubber, ethylene vinyl acetate copolymer and ethylene And at least one selected from the group consisting of propylene copolymers, preferably polyvinyl chloride resins, polyethylene resins or ethylene vinyl acetate copolymer resins. The filler includes at least one selected from the group consisting of calcium carbonate, silica, alumina, lysate, talc, antimony oxide, aluminum oxide, fly ash, barium sulfate and blast furnace slag, preferably calcium carbonate or vesicles, but minerals As a result, it is possible to selectively apply various types of known materials having a function of reducing elasticity and reducing noise.

The thickness of the noise protection layer is 0.3 to 2 mm, preferably 0.5 to 1.5 mm. When the thickness of the noise prevention layer is less than 0.3 mm, the noise prevention effect is insignificant, and when the thickness of the noise prevention layer is larger than 2 mm, the economy is inferior.

The polymer resin included in the high hardness layer is preferably the same as the polymer resin included in the print layer, the stop layer, and the base layer. This is because the bonding strength is excellent when the resin of each layer is the same kind. For example, when a polyvinyl chloride resin is used as the high hardness layer, the polyvinyl chloride resin may also be bonded to the printed layer, the middle layer, and the underlayer, so that the two layers may be bonded well.

In addition, the base layer may include a plurality of irregularities. When the base layer includes a plurality of irregularities as compared with the case of the flat surface, it is easy to discharge moisture or gas, thereby reducing the deformation of the tile efficiently, thereby reducing the restrictions on the construction site.

In one embodiment of the present invention, by introducing a high hardness layer having high mechanical strength and excellent resistance to dimensional deformation, it is possible to prevent the transfer phenomenon to the tile surface due to foreign matter or irregularities on the bottom surface, and improve the dimensional stability This minimizes the occurrence of curling. By minimizing dimensional deformation, gaps between floorings do not open, reducing contamination and ensuring ease of cleaning.

Tile according to an embodiment of the present invention produces a high hardness layer as a sheet through a calendering method, the upper layer, the printing layer, the middle layer and the like on the upper, the lower layer, such as a roll-to-roll method (role-to- role) to be laminated (laminated) to form a multi-layer thermal fusion, or each layer is laminated by forming a multi-stage and then fused by a heat press method.

In one embodiment of the invention, in the method of manufacturing a tile, for example flooring according to the invention, (a) through a calendering method, a print layer and an underlayer (upper layer, stop layer) Preparing a; (b) a high hardness layer is produced in the form of a sheet through a calendering method, and then the base layer prepared in step (a) is laminated under the sheet, and the printed layers are sequentially stacked on the sheet (upper layer, middle finger). Stacking the stop layer, the print layer, and the upper layer in order when the layers are included), and thermally bonding each layer.

In one embodiment of the present invention, the step (a), (b) provides a method performed at 80 ~ 250 ℃.

In one embodiment of the present invention, the tile of the present invention is made of a high hardness layer first through a calendering method of the sheet, and then the base layer, the printing layer (in some cases the sheet is heated to 100 ~ 250 ℃) Base layer, stop layer, printed layer, and upper limb layer) are sequentially bonded by a thermal fusion process. Next, a liquid coating material for surface coating is coated on the upper limb layer and the surface is cured using an ultraviolet irradiation device to prepare a surface coating layer.

Specifically, each of the constituent layers separated by the thermal fusion process is laminated continuously and sequentially. First, the base layer is heated to a temperature of 80 ~ 250 ℃ through an infrared heater and a heating drum (Heating Drum) and then the lamination is made by the high hardness layer bottom surface and the press roll (Press Roll) to move horizontally through the conveyor. Thereafter, the printing layer heated to a temperature of 80 to 250 ° C. through an infrared heater and a heating drum is laminated on the sheet upper surface by a pressure roll. When the stop layer and the upper limb layer are included, first the stop layer is laminated on the sheet upper surface by a press roll, and in the same manner, the printing layer and the upper limb layer are successively bonded to the upper stop layer. The semi-finished product of the laminated tile is subjected to a surface coating layer treatment process, and then cooled to a predetermined size to complete the product.

As mentioned above, the manufacturing method of the tile of this invention is a method which does not use an adhesive agent. In general, when manufacturing a multi-layered composite tile, in particular flooring, it includes the step of laminating and bonding each layer having a different material or physical properties, each layer after applying a liquid adhesive between each layer to obtain sufficient interlayer bonding force The adhesive / compression method of laminating, pressing, and curing and solidifying the adhesive is mainly used. In this method, an adhesive coating process, a curing process, and the like are added, and an intermittent crimping process is performed, whereby the production process is complicated and the process time is increased, thereby reducing the production efficiency of the manufacturing process.

By the way, in this invention, since each layer is bonded by the thermal fusion method without using an adhesive agent, a joining process can be performed continuously instead of intermittently. This shows excellent productivity.

In addition, there is a risk that excessive use of adhesives may contaminate the surface of the product and cause harmful substances to the human body due to volatile organic compounds after flooring construction. In order to increase the production efficiency of the adhesive / compression method manufacturing process, the method of thermal fusion of each layer of the multi-layered composite structure tiles may be used at the same time, but the peel strength between the layers is lowered and the dimensional stability becomes unstable if the manufacturing process conditions are not managed thoroughly. There are disadvantages.

In the present invention, since the finished tile does not include an adhesive, it is excellent in dimensional stability, and contamination of the adhesive and appearance defects can be reduced.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention more practically, it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples in accordance with the gist of the present invention. will be.

Example

Example 1

Each of the layers forming the flooring tiles was made by a calendering method. As shown in Table 1, each layer is blended and mixed with components and composition ratios corresponding to each layer, and the mixed raw materials are heated and pressurized to uniformly primary gel, followed by an extruder or mixing roll. secondary gelation via roll).

division Upper strata Printed layer Hard Hardness Layer Base layer PVC 100 100 100 100 Filler 0 20 100 60 Plasticizer 25 10 10 30 Other Quantity Quantity Quantity Quantity

[Unit: parts by weight]

Subsequently, the gel was rolled into a calender roll and completely gelled, and then a semi-finished sheet-like product was manufactured through a calendering process. The prepared semifinished product was wound up in roll form, and then placed on a continuously rotating conveyor in-line to match the lamination order, and each layer was sequentially thermally fused. Specifically, each layer wound in the form of a roll is pre-heated by an infrared heater and a heating drum while supplying the conveyor in-line, and then the base layer mainly on the high hardness layer through a press roll. Under the high hardness layer, the printed layer was laminated on the high hardness layer by thermal fusion, one by one, on the printed layer in order. The tiles integrated at high temperature and pressure were cooled through a cooling process, firstly cut to an appropriate size, and then an internal stress was removed by an annealing process. A photocurable resin such as urethane acrylate-based resin was applied to the top layer of the cut tiles, cured with ultraviolet rays to form a surface coating layer, and then second cut to a desired size to prepare a multilayer flooring tile.

[Comparative Examples 1 and 2]

The upper layer, the printed layer, and the underlayer were manufactured with the same component and the same compounding ratio as Table 1 above. Specifically, the corresponding components of each layer were pressure kneaded using a mixer, heated and kneaded with a mixing roll, and then molded into a sheet using a calender roll. On the other hand, a high hardness layer is manufactured by sheet-forming using a calender roll with the formulation of the following [Table 2]. Each molded sheet was thermocompressed to produce a multilayer floor tile.

division Example 1 Comparative Example 1 Comparative Example 2 PVC 100 100 100 Filler 100 100 300 Plasticizer 10 30 30 Other Quantity Quantity Quantity

[Unit: parts by weight]

Experimental Example 1

Surface transfer phenomenon evaluation

In order to evaluate the degree of surface transfer for the tiles of Example 1 and Comparative Examples 1 and 2, a wave-shaped hera tread was made on an area of 1000 * 1000 size of each product and applied to the floor, and then transferred to the surface It was confirmed whether or not. The results are shown in Table 3 below.

division Example 1 Comparative Example 1 Comparative Example 2 Surface Transfer none part Clearly visible

According to Table 3, it was confirmed that the surface transfer phenomenon of Example 1 was improved compared to Comparative Examples 1 and 2.

Experimental Example 2

Dimensional stability evaluation

In order to evaluate the dimensional stability of the tiles of Example 1 and Comparative Examples 1 and 2, in accordance with the length change test method by heating specified in KS M 3802, each product is heated at 80 ° C. for 6 hours at room temperature. After cooling for 1 hour, the rate of dimensional change in each of the longitudinal and transverse directions of the individual products was measured. The results are shown in Table 4 below. Here, the lower the dimensional change rate value, the better the dimensional stability.

division Example 1 Comparative Example 1 Comparative Example 2 Dimensional rate of change (%) Length 0.08 0.11 0.10 width 0.06 0.09 0.08

According to Table 4, the dimensional stability of Example 1 was shown to be superior to Comparative Examples 1 and 2.

Experimental Example 3

Evaluation of Curling Prevention Characteristics (Bending Stability)

In order to confirm the anti-curling properties of the tiles of Example 1 and Comparative Examples 1 and 2, in accordance with the curling measurement method specified in ISO 23999, each product is heated at 80 ° C. for 6 hours and then cooled at room temperature for 1 hour. Then, the degree of warpage of each floor was measured based on the condition of the initial product. The results are shown in Table 5 below.

division Example 1 Comparative Example 1 Comparative Example 2 Bending degree (mm) 0.3 ↓ 0.5 ↓ 0.5 ↓

The anti-curling property indicates that the lower the degree of warpage, the better. According to Table 5, the anti-curling properties of Example 1 was shown to be superior to Comparative Examples 1,2.

Experimental Example 4

Residual indentation

In order to evaluate the indentation amount for the tiles of Example 1 and Comparative Examples 1 and 2, each tile was cut to a size of 50 * 50 according to the length change test method by heating specified in KS M 3802, After applying a load of 356 N for 10 minutes with a flat steel bar at room temperature, the indentation amount after 60 minutes was measured after removing the load, and the residual indentation amount was calculated. The results are shown in Table 6 below.

division Example 1 Comparative Example 1 Comparative Example 2 Residual Indentation (%) 0.2 0.3 0.3

Residual indentation should have a performance of 8% or less.

According to Table 6, Example 1 was found to be superior to the residual indentation amount compared to Comparative Examples 1 and 2.

Claims (8)

A transfer preventing flooring tile comprising a print layer, a hard layer, and an underlayer,
The printing layer, the high hardness layer and the base layer are respectively polyethylene resin, polypropylene resin, ABS resin, polyvinyl chloride resin, acrylic resin, polyester resin, polystyrene resin, polytetrafluoroethylene, ethylene-vinylacetate copolymer At least one polymer resin selected from the group consisting of ethylene propylene copolymer, thermoplastic polyurethane (TPU),
The high hardness layer 5 to 12 phr plasticizer, 50 to 200 phr filler,
The high hardness layer has a content ratio (plasticizer: filler) of the plasticizer and the filler is 0.05 to 0.2: 1 by weight,
Specific gravity of the high hardness layer is 1.5 ~ 2.5 transfer prevention flooring tiles,
The polymer resin included in the high hardness layer and the polymer resin included in the printed layer and the base layer are the same,
Wherein each layer is joined by thermal fusion without adhesive. The transfer preventing flooring tile of claim 1, further comprising a stop layer on the base layer and an upper layer on the printed layer. The transfer prevention floor covering tile of claim 1, further comprising a noise prevention layer under the base layer. 3. The transfer preventing flooring tile according to claim 2, further comprising a dimensionally stable layer between the base layer and the stop layer, or between the stop layer and the print layer. The transfer prevention flooring tile of claim 2, further comprising a surface protection layer on the upper layer. (a) preparing a print layer and a base layer,
(b) forming a high hardness layer into a sheet, and then laminating an underlying layer under the sheet and a printed layer on the sheet in order;
The method of manufacturing a transfer preventing floor covering tile of claim 1. The method of claim 6,
Method of producing a transfer-preventive flooring tile, preparing a print layer and a base layer in the step (a) through a calendering method. The method of claim 6,
after step (a),
Thermal welding for each layer
Further comprising, the method of manufacturing a transfer preventing flooring tile.

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