KR20220023010A - An elastic board comprising a fiber layer integrally formed with a substrate and a method for manufacturing the same - Google Patents

Abstract

The present invention relates to an elastic board including a fibrous layer integrally formed with a substrate and a manufacturing method thereof. One aspect of the present invention provides the elastic board and the manufacturing method thereof. The elastic board of the present invention comprises: an elastic substrate; and an elastic fiber layer integrally formed with the elastic substrate on at least a portion of the surface of the elastic substrate. An objective of the present invention is to provide the elastic board capable of preventing environmental pollution, and the manufacturing method thereof.

Description

An elastic board including a fibrous layer integrally formed with a substrate and a method for manufacturing the same

The present invention relates to an elastic board including a fibrous layer integrally formed with a substrate and a method for manufacturing the same.

The elastic board is widely used as a building material for finishing interior walls, ceilings, or floors, or as a cushioning material for preventing noise, impact, or slipping.

Such an elastic board is generally manufactured by mixing a polymer resin having a predetermined elasticity with other functional components, and then extruding, injection molding, or foam molding. It can be varied widely.

On the other hand, a product with additional durability, abrasion resistance, heat resistance, chemical resistance, and breathability while maintaining the basic physical properties of the elastic board, such as bonding a member capable of implementing the necessary physical properties to the surface of the elastic board or coating a predetermined composition. This was also introduced. For example, the durability is improved by embedding a predetermined nonwoven film in the inside of the rubber board, or the abrasion resistance, chemical resistance, heat resistance, etc. are improved by mixing a predetermined inorganic filler with a polymer resin, or the nonwoven fabric on the surface of the elastic board Products, etc. have been developed by laminating films or textile fabrics to give the surface air permeability, moisture permeability, dust collection properties, and anti-slip properties.

Korean Patent No. 10-1039088 discloses a method of manufacturing an eco-friendly flooring material that is economical and environmentally friendly because it is renewable and can reduce the manufacturing cost of flooring by using ethylene vinyl acetate (EVA) foamed resin. However, since the surface of the flooring material is polished to increase the smoothness, there is a problem in that it is difficult to realize air permeability, moisture permeability, dust collection characteristics, etc. on the surface.

Korea Patent No. 10-1941430 discloses a method for manufacturing a mat comprising laminating a foam sheet and a carpet part using a hot melt adhesive made of a polyolefin-based elastomer, but after manufacturing the carpet part using a yarn, the Since raw materials and processes required to perform the lamination step using a hot melt adhesive are added or complicated, it is disadvantageous in terms of productivity and economy, and when the amount of adhesive required for lamination increases, the emission of volatile organic compounds (VOCs) also increases. In the process of manufacturing the mat or using the manufactured mat, it may adversely affect the surrounding environment.

Therefore, while improving economic efficiency and productivity by simplifying the process, durability, abrasion resistance, heat resistance, chemical resistance, breathability, moisture permeability, dust collection characteristics, etc. can be implemented in a balanced way, and the demand for an elastic board that can prevent environmental pollution is continuously increasing.

The present invention is to solve the problems of the prior art described above, an object of the present invention is to simplify the process to improve economic efficiency and productivity, while balancing durability, abrasion resistance, heat resistance, chemical resistance, breathability, moisture permeability, dust collection characteristics, etc. An object of the present invention is to provide an elastic board and a method for manufacturing the same that can be implemented effectively and can prevent environmental pollution.

One aspect of the present invention is an elastic substrate; and an elastic fiber layer integrally formed with the elastic substrate on at least a portion of the surface of the elastic substrate.

In one embodiment, the elastic substrate and the elastic fiber layer may be made of the same material.

In one embodiment, the elastic fiber layer may protrude from at least a portion of the surface of the elastic substrate.

In one embodiment, the elastic substrate and the elastic fiber layer may be made of a thermoplastic elastomer.

In one embodiment, the thermoplastic elastomer may be one selected from the group consisting of polystyrene-based, polyolefin-based, polyurethane-based, polyester-based, vinyl chloride-based, and combinations or copolymers of two or more thereof.

In an embodiment, the elastic substrate is a porous foam including a plurality of pores, the elastic fiber layer includes a plurality of fiber strands, and the average diameter of the pores may be smaller than the average distance between the fiber strands. there is.

In an embodiment, the average angle between the elastic substrate and the fiber strands may be 30 to 90°.

In one embodiment, the average length of the fiber strands may be 1 ~ 100mm.

In one embodiment, the elastic fiber layer may include a first elastic fiber layer and a second elastic fiber layer having different average lengths of the fiber strands.

Another aspect of the present invention, in the method for manufacturing the elastic board, comprising the step of forming the elastic fiber layer by treating at least a portion of the surface of the elastic substrate in a physical method, a chemical method, or a combination thereof A method for manufacturing an elastic board is provided.

The elastic board according to an aspect of the present invention includes an elastic fiber layer that extends and protrudes from at least a portion of an elastic substrate and a surface of the elastic substrate and is formed integrally with the elastic substrate, thereby providing durability, abrasion resistance, heat resistance, chemical resistance, and breathability. , moisture permeability, dust collection characteristics, etc. can be implemented in a balanced way, and environmental pollution can be prevented.

In addition, in the method for manufacturing an elastic board according to another aspect of the present invention, by treating at least a portion of the surface of the elastic substrate in a physical method, a chemical method, or a combination thereof to form the elastic fiber layer, By simplifying the process for forming the fiber layer on the surface, economical efficiency and productivity can be significantly improved.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a perspective view of an elastic board according to an embodiment of the present invention.
2 and 3 are cross-sectional views of an elastic board according to an embodiment of the present invention.
4 is an SEM image of a cross-section of an elastic board according to an embodiment of the present invention.
5 is a SEM image of the surface of the elastic board according to an embodiment of the present invention.
6 is a cross-sectional view of an elastic board according to another embodiment of the present invention.
7 is a SEM image of the surface of the elastic board according to another embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in several different forms, and thus is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is "connected" with another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member interposed therebetween. . In addition, when a part "includes" a certain component, this means that other components may be further provided without excluding other components unless otherwise stated.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an elastic board according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the elastic board according to an embodiment of the present invention.

1 to 3 , an elastic board according to an aspect of the present invention includes an elastic substrate 100; and an elastic fiber layer 200 integrally formed with the elastic substrate on at least a portion of the surface of the elastic substrate.

The elastic substrate 100 and the elastic fiber layer 200 may be made of the same and/or the same material and/or may be interconnected by bonding, sealing, or bending without any gap therebetween. Preferably, the elastic substrate 100 and the elastic fiber layer 200 may be made of the same material, and more preferably, the elastic fiber layer 200 is formed from at least a portion of the surface of the elastic substrate 100 . It may be extended and protruded.

Conventionally, products such as non-woven films or fiber fabrics laminated on the surface of an elastic board to give air permeability, moisture permeability, dust collection characteristics, and anti-slip properties to the surface have been developed. This is added or complicated, so it is disadvantageous in terms of productivity and economic feasibility, and when the amount of adhesive required for lamination increases, the amount of volatile organic compounds (VOCs) emitted also increases. may have an adverse effect.

In contrast, the elastic fiber layer 200 is formed by processing at least a portion of the surface of the elastic substrate 100 in a manner to be described later, that is, by being integrally made of the same material as that of the elastic substrate 100, conventionally Compared to products with laminated fibers, the process is simplified to improve economic feasibility and productivity, while achieving a balanced implementation of durability, abrasion resistance, heat resistance, chemical resistance, breathability, moisture permeability, dust collection characteristics, etc., and environmental pollution can be prevented. .

The elastic substrate and the elastic fiber layer may be made of a thermoplastic elastomer. As used herein, the term "thermoplastic elastomer" refers to a polymer material that has the properties of rubber at room temperature, that is, elasticity, but is plasticized at a high temperature and capable of various molding processes. For example, the thermoplastic elastomer may be one selected from the group consisting of polystyrene-based, polyolefin-based, polyurethane-based, polyester-based, vinyl chloride-based, and combinations or copolymers of two or more thereof.

The thermoplastic elastomer is ethylene vinyl acetate (EVA), olefin block copolymer, ethylene/α-olefin copolymer, propylene/α-olefin copolymer, EPDM (ethylene propylene diene monomer rubber), EPM (ethylene propylene monomer) rubber), a copolymer consisting of one or more comonomers copolymerizable therewith, and one polyolefin elastomer (POE) selected from the group consisting of combinations of two or more thereof, preferably, ethylene / α-olefin copolymers, propylene/α-olefin copolymers and/or EPDM.

Conventional elastic boards were manufactured using ethylene vinyl acetate or polyurethane as a main resin. However, polyurethane has relatively superior durability, processability, moldability and resilience compared to ethylene vinyl acetate, but the material itself is heavy, so the weight of the elastic board increases, and users who wear it feel fatigue within a short time. In addition, the ethylene vinyl acetate material itself is excellent in lightness, but there is a problem in that the restoring force and durability are lowered compared to polyurethane.

In contrast, the thermoplastic elastomer includes two types of ethylene vinyl acetate having different monomer compositions, that is, the first ethylene vinyl acetate and the second ethylene vinyl acetate having a different monomer composition from the first ethylene vinyl acetate. It can properly compensate for the lack of restoring force, durability, and mechanical properties.

Although the ethylene vinyl acetate itself is excellent in light weight, the flexibility and adhesiveness of the resin can be determined by the degree of polymerization and the content of vinyl acetate. For example, when the content of vinyl acetate in the ethylene vinyl acetate is increased, flexibility and adhesion may be improved. However, as the content of vinyl acetate increases, there is a problem in that the processability is deteriorated due to an increase in adhesion during processing.

In addition, it is difficult to sufficiently implement durability and mechanical properties with ethylene vinyl acetate alone, and in particular, when it is used as a foam, tensile strength is reduced. .

The ethylene vinyl acetate may be prepared by emulsion polymerization, solution polymerization, and/or suspension polymerization of a monomer.

The emulsion polymerization is a method of emulsifying an oil-soluble monomer in water with a surfactant and polymerizing it using a water-soluble initiator. can be obtained.

The solution polymerization is a method in which an oil-soluble monomer is dissolved in a solvent, for example, an organic solvent, and then polymerized using an initiator.

The suspension polymerization is performed in micelles of the suspended monomers by dispersing the monomers in a medium in which the monomers are hardly soluble and using a polymerization initiator that is not soluble in the medium and dissolves well in the monomers. Polymerization may proceed as is.

The content of vinyl acetate in the first ethylene vinyl acetate may be 15 to 30% by weight. If the content of vinyl acetate in the first ethylene vinyl acetate is less than 15% by weight, flexibility and adhesiveness may be reduced, and if it exceeds 30% by weight, processability may be reduced. In addition, the content of the vinyl acetate in the second ethylene vinyl acetate may be 5 to 15% by weight. If the content of vinyl acetate in the second ethylene vinyl acetate is less than 5 weight percent, the restoring force may be reduced, and if it exceeds 15 weight percent, processability may be reduced.

The content of the first ethylene vinyl acetate in the thermoplastic elastomer may be 10 to 90% by weight. If the content of the first ethylene vinyl acetate in the thermoplastic elastomer is less than 10% by weight, restoring force may be reduced, and if it exceeds 90% by weight, durability and mechanical properties may be reduced.

The first and second ethylene vinyl acetate have different monomer compositions, and by controlling the content in the main resin to be included in the above range, it is possible to maximize the lightness while improving the durability and restoring force of the elastic board, which is the final product.

On the other hand, the olefin block copolymer is an olefin block copolymer of the trade name INFUSE ^TM (Dow Chemical Company) and SEPTON ^TM V-series, a styrene-ethylene-butylene-styrene block copolymer (Kuraray Company) Ltd. (Kuraray Co., LTD.), but is not limited thereto. The ethylene/α-olefin copolymer has a trade name TAFMER ^TM (eg, TAFMER DF710) (Mitsui Chemicals In.) Corporation) and ENGAGE ^™ (e.g., ENGAGE 8150) (Dow Chemical Company).The propylene/α-olefin copolymer has the trade name VISTAMAXX ) ^TM 6102 grade (Exxon Mobil Chemical Company), Tapmer ^TM XM (Mitsui Chemicals, Inc.) and VERSIFY ^TM (Dow Chemical Company), but is not limited thereto. The EPDM may have a diene content of about 0.5 to 10% by weight, and the EPM may have an ethylene content of about 45 to 75% by weight.

As used herein, the term “comonomer” refers to an olefin comonomer suitable for polymerization with an olefin monomer such as an ethylene or propylene monomer.

The comonomer may include, but is not limited to, an aliphatic C ₂ -C ₂₀ α-olefin. Suitable aliphatic C ₂ -C ₂₀ α-olefins are, for example, ethylene, propylene, 1-butene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1 -Tetradecene, 1-hexadecene, 1-octadecene, 1-eicocene, and may be one selected from the group consisting of a combination of two or more thereof, but is not limited thereto. In addition, the comonomer may be vinyl acetate.

As used herein, the term "copolymer" refers to a polymer prepared by linking two or more types of monomers in the same polymer chain. Conversely, "homopolymer" means a polymer prepared by linking olefin monomers in the absence of a comonomer.

The content of the comonomer may be 0 to 12% by weight, preferably 0 to 9% by weight, more preferably 0 to 7% by weight based on the weight of the polyolefin elastomer. In addition, the content of the comonomer may be about 2-30 mol%, preferably, about 3-30 mol%, more preferably, about 6-30 mol% of the polyolefin elastomer. The copolymer may be a random or block (heterophasic) copolymer, preferably a random copolymer of propylene and ethylene, but is not limited thereto.

The polyolefin elastomer is an olefin homopolymer, a blend of homopolymers, a copolymer prepared using two or more olefins, a blend of a copolymer prepared using two or more olefins, respectively, and a copolymer prepared using two or more olefins. It may be one selected from the group consisting of a combination of coalescing and blended olefin homopolymers. The olefin may be one selected from the group consisting of ethylene, propylene, 1-butene, 1-propene, 1-hexene, 1-octene, other higher 1-olefins, and combinations of two or more thereof.

The polyolefin elastomer can be prepared in many different processes (eg, using gas phase and solution based on the use of metallocene catalysts and Ziegler-Natta catalysts) and optionally using catalysts suitable for the polymerization of ethylene and/or α-olefins. can be synthesized.

The polyethylene used in the polyolefin elastomer may be one selected from the group consisting of LDPE (low density polyethylene), LLDPE (linear low density polyethylene), HDPE (high density polyethylene), and a combination of two or more thereof, but is not limited thereto. Meanwhile, the polyethylene may be classified into ultra-high molecular weight (UHMW), high molecular weight (HMW), medium molecular weight (MMW), and low molecular weight (LMW).

The thermoplastic elastomer may further include a certain amount of filler (filler), for example, silica particles. The filler may contribute to durability such as flexural strength of the thermoplastic elastomer and an elastic board manufactured therefrom. However, since the silica particle has a high specific gravity and may be a factor inhibiting weight reduction, it may be included in an amount of 10 to 40 parts by weight based on 100 parts by weight of the thermoplastic elastomer.

The thermoplastic elastomer may further include one additive selected from the group consisting of a coupling agent, an antioxidant, a metal oxide, a lubricant, a process oil, a surfactant, a crosslinking agent, a crosslinking aid, a pigment, a dye, and a combination of two or more thereof.

The coupling agent includes functional groups at both ends, the functional group located at one end is a filler, that is, silica particles, and the functional group located at the other end reacts with the polymer chain of the thermoplastic elastomer to improve the mechanical properties of the elastic board. there is.

The coupling agent may be a silane-based, siloxane-based, mixture thereof, or a polymer thereof, and, if necessary, may be modified by a functional group or a substituent, preferably, a silane-based coupling agent, and more Preferably, it may be bis(3-(triethoxysilyl)propyl)tetrasulfide.

The silane-based coupling agent may improve the mechanical properties of the elastic board by chemically bonding the surface of the silica particle serving as the filler and the polymer chain of the thermoplastic elastomer to improve the interaction and dispersibility between the thermoplastic elastomer and the filler.

The process oil may be one selected from the group consisting of paraffin oil, naphthenic oil, aromatic oil, and a combination of two or more thereof. The process oil may affect properties such as compatibility with various resins, processability, low-temperature characteristics of products, anti-fouling properties, aging resistance, elasticity, and abrasion resistance.

The process oil may be aromatic, naphthenic, or paraffinic oils, and in general, compatibility with resins may be in the order of aromatic, naphthenic, and paraffinic oils, but is not limited thereto. Preferably, it may be white oil among paraffinic oils, which is an oil manufactured under long-term accumulated technology and thorough quality control using highly refined paraffin oil as a raw material. It is advantageous for mixing because it does not cause emulsification when mixing with water due to low contamination and excellent water separation.

The metal oxide may include zinc oxide, titanium oxide, or a combination thereof. The metal oxide may be included in the thermoplastic elastomer to improve mechanical properties of the elastic board.

When the elastic board is manufactured to include only the thermoplastic elastomer, the elastic board may be lightened, but durability and mechanical properties may be reduced to increase the defect rate of the elastic board as well as reduce the feeling of use. However, if a large amount of metal oxide is included, compatibility with the thermoplastic elastomer and workability are reduced, and as the content of the metal component increases, the weight of the elastic board becomes heavy, which can also be a factor to reduce the feeling of use.

The content of the metal oxide may be 1 to 10 parts by weight based on 100 parts by weight of the thermoplastic elastomer. If the content of the metal oxide in the thermoplastic elastomer is less than 1 part by weight, durability and mechanical properties of the elastic board may be reduced, and if it exceeds 10 parts by weight, the lightness of the elastic board may be reduced.

The zinc oxide may be included and dispersed in the thermoplastic elastomer to control the crosslinking rate and promote foaming. When the metal oxide includes zinc oxide and titanium oxide, the content of the zinc oxide in the metal oxide may be 50 to 90 wt%. If the content of the zinc oxide in the metal oxide is less than 50% by weight, the crosslinking rate is slowed and the defect rate of the elastic board may increase. can

The titanium oxide may be included in the elastic board together with the zinc oxide to achieve a synergistic effect of controlling the crosslinking rate and maximizing foam formation. In addition, the titanium oxide may serve as a pigment, and may give a white color in the foaming process when the elastic board is manufactured.

The thermoplastic elastomer may include a lubricant, and the lubricant may be stearic acid. The stearic acid may serve to uniformly disperse the thermoplastic elastomer. Specifically, the stearic acid is included in the thermoplastic elastomer to finely pulverize large particles or aggregated particles of the thermoplastic elastomer into smaller particles and uniformly disperse the particles to prevent agglomeration of the particles.

The amount of the lubricant may be 0.1 to 5 parts by weight based on 100 parts by weight of the thermoplastic elastomer. If the content of the lubricant is less than 0.1 parts by weight, the dispersion effect may be weak, and if it exceeds 5 parts by weight, the viscosity of the resin may be excessively lowered, thereby reducing processability.

The thermoplastic elastomer may include a blowing agent. The foaming agent may be one selected from the group consisting of azodicarbonamide, dinitrosopentamethyltetraamine, azobisisobutylnitrile, p-toluenesulfonylhydrazide, and combinations of two or more thereof, preferably , may be azodicarbonamide, but is not limited thereto.

The content of the blowing agent may be 1 to 5 parts by weight based on 100 parts by weight of the thermoplastic elastomer. If the content of the foaming agent is less than 1 part by weight, the lightness may be reduced, and if it exceeds 5 parts by weight, the durability of the elastic board may be reduced.

The crosslinking agent may be a peroxide-based crosslinking agent. The crosslinking agent is, for example, dicumyl peroxide, t-butylperoxylaurylate, t-dibutylperoxymaleic acid, t-butylhydroperoxide, 2,5-dimethyl-2,5-di(t- It may be one selected from the group consisting of butylperoxy)nucleic acid, di-t-butylperoxide and 1,3-bis(t-butylperoxyisopropylene)benzene, and combinations of two or more thereof, preferably, diku It may be mil peroxide, but is not limited thereto.

The content of the crosslinking agent may be 0.1 to 5 parts by weight based on 100 parts by weight of the thermoplastic elastomer. If the content of the crosslinking agent is less than 0.1% by weight, durability and mechanical properties of the elastic board may be reduced, and if it exceeds 5 parts by weight, flexibility and restoring force of the elastic board may be reduced.

The crosslinking aid may serve as a crosslinking accelerator for accelerating a crosslinking reaction together with the crosslinking agent. The crosslinking aid is, for example, triallyl cyanurate, triallyl isocyanurate, trimethylol, polybutadiene, propane trimethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, butyl It may be one selected from the group consisting of renglycol acrylate, butylene glycol dimethacrylate, metal-acrylate, metal-methacrylate, and combinations of two or more thereof, preferably triallyl cyanurate. However, the present invention is not limited thereto.

The content of the crosslinking aid may be 0.1 to 2 parts by weight based on 100 parts by weight of the thermoplastic elastomer. If the content of the crosslinking aid is less than 0.1 parts by weight, the durability and mechanical properties of the elastic board may be reduced, and if it exceeds 2 parts by weight, the flexibility and restoring force of the elastic board may be reduced.

3 is a cross-sectional view of the elastic board according to an embodiment of the present invention, Figure 4 is a SEM image of the cross-section of the elastic board according to an embodiment of the present invention.

3 and 4 , the elastic substrate 100 according to an embodiment of the present invention is a porous foam including a plurality of pores, and the elastic fiber layer 200 includes a plurality of fiber strands 210 ), and the average diameter of the pores may be smaller than the average distance between the fiber strands 210 .

As used herein, the term "fiber strand (fibril)" refers to a portion of the elastic fiber layer 200 excluding pores, which is to be interpreted as all areas in contact with external air on the surface and inside of the elastic fiber layer 200. can

In the space formed between the fiber strands 210 of the elastic fiber layer 200, dust, dust, etc. floating in the air of the space in which the elastic board is installed or falling to the floor may be collected, and the collected dust, dust, etc. It can be easily removed by washing the board. However, when the average size of the pores included in the elastic substrate 100 is greater than the average distance of the fiber strands, dust and dust collected in the space formed between the fiber strands 210 are generated in the pores of the elastic substrate 100 . It can penetrate inside, and in this case, even if the elastic board is washed, there is a problem that such dust and dust are difficult to be removed. You need to adjust it to be smaller than the distance.

Referring to FIG. 3 , the fiber strand 210 is formed to be substantially upright with respect to the surface of the elastic substrate 100 , and since the fiber strand 210 is also made of an elastic material, it deforms at a load less than a threshold value. And restoration can be made variably, and accordingly, breathability, moisture permeability, and dust collection characteristics can be imparted to the elastic board.

Specifically, the average angle between the elastic substrate 100 and the fiber strands 210 may be 30° to 90°. If the average angle between the elastic substrate and the fiber strands is less than 30°, it is difficult to sufficiently form a space in which dust, dust, etc. can be collected between the fiber strands 210, and it is difficult to properly implement air permeability and moisture permeability. there is.

The average length of the fiber strands 210 may be 1 to 100 mm. If the average length of the fiber strands is less than 1 mm, it is difficult to sufficiently form a space in which dust, dust, etc. can be collected between the fiber strands 210, and there is a problem in that it is difficult to properly implement air permeability and moisture permeability. Conversely, when the average length of the fiber strands is greater than 100 mm, it is difficult for the fiber strands 210 to be formed substantially upright with respect to the surface of the elastic substrate 100 .

6 is a cross-sectional view of an elastic board according to another embodiment of the present invention.

Referring to FIG. 6 , the elastic fiber layer 200 may include a first elastic fiber layer 230 and a second elastic fiber layer 240 having different average lengths of the fiber strands 210 , and through this, the elastic fiber layer 200 may have various patterns, shapes, shades, or structures on the surface of the elastic substrate 100 .

The average length of the fiber strands constituting the first and second elastic fiber layers 230 and 240 may also be 1 to 100 mm. If the average length of the fiber strands is less than 1 mm, it is difficult to sufficiently form a space in which dust, dust, etc. can be collected between the fiber strands 210, and there is a problem in that it is difficult to properly implement air permeability and moisture permeability. Conversely, when the average length of the fiber strands is greater than 100 mm, it is difficult for the fiber strands 210 to be formed substantially upright with respect to the surface of the elastic substrate 100 .

The elastic board may be used as a floor mat, a vehicle mat, a shoe insole, etc. as a building material for finishing an indoor wall, ceiling, or floor or a cushioning material for preventing noise, shock, or slip, but the use is limited thereto it is not

Another aspect of the present invention, in the method for manufacturing the elastic board, comprising the step of forming the elastic fiber layer by treating at least a portion of the surface of the elastic substrate in a physical method, a chemical method, or a combination thereof A method for manufacturing an elastic board is provided.

The physical method refers to a method of forming the elastic fiber layer on the surface of the elastic substrate by applying a predetermined physical force to at least a portion of the surface of the elastic substrate. For example, the physical method may be performed by (1) contacting at least a portion of the surface of the elastic substrate with a pressing means and/or friction means including irregularities and/or teeth formed in a predetermined pattern and the surface of the elastic substrate. A method of forming a fibrous layer by substantially scraping or shaving, (2) irradiating at least a portion of the surface of the elastic substrate with heat and/or light in a predetermined pattern to cause intended damage to the surface of the elastic substrate, thereby forming the fibrous layer method of forming, and/or (3) method of forming a fibrous layer by colliding a plurality of particles made of a material having a relatively high hardness on at least a part of the surface of the elastic substrate to cause intended damage to the surface of the elastic substrate may be, but is not limited thereto.

The chemical method refers to a method of forming a fibrous layer by reacting at least a portion of the surface of the elastic substrate with a predetermined chemical to cause intended damage to the surface of the elastic substrate. For example, when the elastic substrate is made of a foam, that is, a foam including predetermined pores, a chemical substance capable of dissolving the elastic substrate and the surface of the elastic substrate are brought into contact with the surface area of the elastic substrate. A fibrous layer may be formed on the surface of the elastic substrate while the pores are exposed to the outside.

The physical method and the chemical method may be combined with each other to form the elastic fiber layer on at least a portion of the surface of the elastic substrate, and at this time, the surface of the elastic substrate may be physically treated and then treated with a chemical method, It can be treated with a physical method after being treated with a chemical method, and the number of times and crossover frequency of each method are not particularly limited. Preferably, the surface of the elastic substrate is treated in a physical manner so as not to remain in the elastic substrate or the elastic fiber layer, such as chips, etc., separated from the elastic substrate during treatment by the physical method, and then chemically treated. It can be properly removed by treatment.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

100: elastic substrate
200: elastic fiber layer
210: fiber strand
230: first elastic fiber layer
240: second elastic fiber layer

Claims (10)

elastic substrate; and
Containing; an elastic fiber layer integrally formed with the elastic substrate on at least a portion of the surface of the elastic substrate;
elastic board. The method of claim 1,
The elastic substrate and the elastic fiber layer are made of the same material,
elastic board. 3. The method of claim 2,
The elastic fiber layer will protrude from at least a portion of the surface of the elastic substrate,
elastic board. According to claim 1,
The elastic substrate and the elastic fiber layer are made of a thermoplastic elastomer,
elastic board. 5. The method of claim 4,
The thermoplastic elastomer is one selected from the group consisting of polystyrene-based, polyolefin-based, polyurethane-based, polyester-based, vinyl chloride-based, and combinations or copolymers of two or more thereof,
elastic board. According to claim 1,
The elastic substrate is a porous foam including a plurality of pores,
The elastic fiber layer includes a plurality of fiber strands,
The average diameter of the pores is less than the average distance between the fiber strands,
elastic board. 7. The method of claim 6,
The average angle between the elastic substrate and the fiber strand is 30 to 90°,
elastic board. 8. The method of claim 7,
The average length of the fiber strand is 1 to 100 mm,
elastic board. 7. The method of claim 6,
The elastic fiber layer comprises a first elastic fiber layer and a second elastic fiber layer having different average lengths of the fiber strands,
elastic board. In the method for manufacturing the elastic board according to any one of claims 1 to 9,
Forming the elastic fiber layer by treating at least a portion of the surface of the elastic substrate in a physical manner, a chemical manner, or a combination thereof,
A method for manufacturing an elastic board.

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