KR102407100B1 - A method for manufacturing elastic rubber mat(rubber tile) coated with synthetic resin for indoor flooring - Google Patents

Abstract

The present invention relates to a method for manufacturing an elastic rubber mat (tile) for indoor flooring coated with synthetic resin, and more particularly, to rubber, flame retardant, antibacterial agent, filler, plasticizer, activator, anti-aging agent, vulcanizing agent, vulcanization accelerator and heat preparing a rubber sheet by kneading a composition containing a stabilizer; attaching a synthetic resin film to the upper surface of the rubber sheet; manufacturing an elastic rubber mat by first vulcanizing the rubber sheet to which the synthetic resin film is attached; And it relates to a method of manufacturing an elastic rubber mat (tile) for indoor flooring coated with synthetic resin comprising the step of secondary vulcanization of the elastic rubber mat.

Description

{A method for manufacturing elastic rubber mat (rubber tile) coated with synthetic resin for indoor flooring}

The present invention relates to a method for manufacturing an elastic rubber mat (tile) for indoor flooring coated with synthetic resin, and more particularly, to rubber, flame retardant, antibacterial agent, filler, plasticizer, activator, anti-aging agent, vulcanizing agent, vulcanization accelerator and heat preparing a rubber sheet by kneading a composition containing a stabilizer; attaching a synthetic resin film to the upper surface of the rubber sheet; manufacturing an elastic rubber mat by first vulcanizing the rubber sheet to which the synthetic resin film is attached; And it relates to a method of manufacturing an elastic rubber mat (tile) for indoor flooring coated with synthetic resin comprising the step of secondary vulcanization of the elastic rubber mat.

In general, on the floor of sports facilities such as athletics tracks, basketball courts, volleyball courts, and tennis courts, it minimizes the impact on the ground and uses the repulsive force to obtain the maximum exercise effect, and protects the players by preventing strain on the joints of the human body, Various elastic flooring materials are being constructed so that the players can fully demonstrate their skills.

Examples of elastic flooring materials used for floors in sports facilities include block or mat-type flooring made of rubber chips, synthetic resin flooring, and elastic roll sheets made of rubber sheets.

Block-type rubber mats manufactured by a press method using rubber chips as the main material can be applied to walking paths, walking paths, playgrounds, etc., but they are constructed in an interlocking method that connects one unit product to provide uniform elasticity. Because there is a limit, it cannot be applied to sports facilities such as athletics tracks, basketball courts, volleyball courts, and tennis courts, and the appearance and appearance are not beautiful because the shape and shape are uniform and the interlocking seam is exposed.

Synthetic resin flooring can achieve interior effects by giving various colors, patterns, and patterns to the surface, but lack of elasticity, flame retardancy, durability, weather resistance, etc. weak.

Since the elastic roll sheet made of rubber sheet is molded and manufactured at the factory, interlocking of the block-type rubber mat is unnecessary, and it has excellent durability and weather resistance and can provide uniform elasticity, so the elasticity of the same thickness It can provide superior elasticity compared to packaging.

However, the elastic roll sheet has flame retardant properties, antibacterial properties, anti-slip properties, impact resistance, and sound absorption properties when used as indoor flooring materials for indoor gyms, fitness centers, hospitals, children's facilities, facilities for the elderly, automobiles, ships, bathhouses, accommodations, and toilets. It cannot be used stably for a long time due to lack of etc.

In addition, the elastic roll sheet has a disadvantage in that it is not possible to implement an interior effect because various colors, patterns, patterns, etc. cannot be applied to the surface.

Therefore, it has excellent flame retardancy, antibacterial properties, durability, weather resistance, anti-slip properties, elasticity, adhesion, impact resistance, and sound absorption, so it can be used stably for a long time for indoor flooring purposes. An elastic rubber mat or elastic rubber tile that can implement the effect is required.

Korean Patent Publication No. 10-0825485

The present invention is to solve the problems of the prior art, and has excellent flame retardancy, antibacterial properties, durability, weather resistance, anti-slip properties, elasticity, adhesion, impact resistance, sound absorption, etc. An object of the present invention is to provide a method of manufacturing an elastic rubber mat (tile) for indoor flooring that can implement interior effects by giving various colors, patterns, patterns, etc. to the surface.

In order to achieve the above object, the present invention provides a rubber sheet by kneading a composition comprising rubber, a flame retardant, an antibacterial agent, a filler, a plasticizer, an activator, an anti-aging agent, a vulcanizing agent, a vulcanization accelerator and a heat stabilizer;

attaching a synthetic resin film to the upper surface of the rubber sheet;

manufacturing an elastic rubber mat by first vulcanizing the rubber sheet to which the synthetic resin film is attached; and

It provides a method of manufacturing an elastic rubber mat (tile) for indoor flooring comprising the step of secondary vulcanization of the elastic rubber mat.

In one embodiment of the present invention, the composition comprises 5 to 20 parts by weight of a flame retardant, 1 to 10 parts by weight of an antibacterial agent, 10 to 60 parts by weight of a filler, 1 to 10 parts by weight of a plasticizer, 1 to 10 parts by weight of an activator with respect to 100 parts by weight of rubber. 10 parts by weight, 1 to 10 parts by weight of an antioxidant, 0.5 to 10 parts by weight of a vulcanizing agent, 0.5 to 10 parts by weight of a vulcanization accelerator, and 0.5 to 5 parts by weight of a heat stabilizer.

In one embodiment of the present invention, the rubber uses natural rubber (NR), styrene-butadiene rubber (SBR) and butadiene rubber (BR), and the natural rubber (NR), styrene-butadiene rubber (SBR) and The weight ratio of the butadiene rubber (BR) is 100:10-20:20-50.

In one embodiment of the present invention, the step of attaching the synthetic resin film to the upper surface of the rubber sheet is characterized in that the rubber sheet and the synthetic resin film are laminated and then passed between rollers.

In addition, the present invention provides an elastic rubber mat for indoor flooring manufactured by the above manufacturing method.

The present invention has excellent flame retardancy, antibacterial properties, durability, weather resistance, anti-slip properties, elasticity, adhesion, impact resistance, sound absorption, etc. Thus, it is possible to provide a method of manufacturing an elastic rubber mat (tile) for indoor flooring that can express an interior effect.

Hereinafter, the present invention will be described in detail based on Examples. The terms, examples, etc. used in the present invention are merely exemplified to explain the present invention in more detail and help those of ordinary skill in the art to understand, and the scope of the present invention should not be construed as being limited thereto.

Technical terms and scientific terms used in the present invention represent meanings commonly understood by those of ordinary skill in the art to which this invention belongs, unless otherwise defined.

The present invention comprises the steps of preparing a rubber sheet by kneading a composition comprising rubber, a flame retardant, an antibacterial agent, a filler, a plasticizer, an activator, an antioxidant, a vulcanizing agent, a vulcanization accelerator and a heat stabilizer;

attaching a synthetic resin film to the upper surface of the rubber sheet;

manufacturing an elastic rubber mat by first vulcanizing the rubber sheet to which the synthetic resin film is attached; and

It relates to a method of manufacturing an elastic rubber mat (tile) for indoor flooring coated with synthetic resin, comprising the step of secondary vulcanizing the elastic rubber mat.

In the manufacturing of the rubber sheet, a rubber sheet may be prepared by kneading a composition including rubber, a flame retardant, an antibacterial agent, a filler, a plasticizer, an activator, an anti-aging agent, a vulcanizing agent, a vulcanization accelerator, and a heat stabilizer.

The composition comprises 5 to 20 parts by weight of a flame retardant, 1 to 10 parts by weight of an antibacterial agent, 10 to 60 parts by weight of a filler, 1 to 10 parts by weight of a plasticizer, 1 to 10 parts by weight of an activator, 1 to 10 parts by weight of an anti-aging agent, based on 100 parts by weight of rubber. It may contain 0.5 to 10 parts by weight of a vulcanizing agent, 0.5 to 10 parts by weight of a vulcanization accelerator, and 0.5 to 5 parts by weight of a heat stabilizer.

The rubber is used to impart elasticity, water resistance, weather resistance and ozone resistance, and natural rubber (NR), butadiene rubber (BR), styrene-butadiene rubber (SBR), polychloroprene rubber (CR), acrylonitrile-butadiene at least one from rubber (NBR), isoprene rubber (IR), ethylene-propylene rubber (EPR) and ethylene-propylene-diene rubber (EPDM).

For example, the rubber may include natural rubber (NR), styrene-butadiene rubber (SBR) and butadiene rubber (BR), wherein the natural rubber (NR), styrene-butadiene rubber (SBR) and butadiene rubber ( It is preferable that the weight ratio of BR) is 100:10-20:20-50.

When the weight ratio satisfies the above numerical range, durability, weather resistance, water resistance and impact resistance of the elastic rubber mat can be maximized.

In addition, as the rubber, natural rubber (NR), styrene-butadiene rubber (SBR), butadiene rubber (BR) and acrylonitrile-butadiene rubber (NBR) may be used, and in this case, the natural rubber (NR), styrene-butadiene rubber (SBR), butadiene rubber (BR), and the weight ratio of acrylonitrile-butadiene rubber (NBR) is preferably 100:10-20:20-50:10-20.

When the weight ratio satisfies the above numerical range, durability, weather resistance, water resistance and impact resistance of the elastic rubber mat can be maximized.

The flame retardant is used to provide flame retardancy or non-flammability, and a phosphorus-based flame retardant such as triphenyl phosphate; metal hydroxide-based flame retardants such as aluminum hydroxide and magnesium hydroxide; nitrogen-containing compound-based flame retardants; graphite material-based flame retardants; Melamine cyanurate-based flame retardants; metal oxide-based flame retardants such as antimony oxide; Phosphate-based flame retardants and the like may be used without limitation.

The content of the flame retardant is preferably 5 to 20 parts by weight based on 100 parts by weight of rubber, and when the content is less than 5 parts by weight, the flame retardancy is lowered, and when it exceeds 20 parts by weight, durability and workability are rather deteriorated.

In the present invention, aluminum hydroxide and antimony oxide may be used simultaneously as a flame retardant, and the weight ratio of aluminum hydroxide and antimony oxide is preferably 70 to 90:10 to 30.

The antibacterial agent is used to impart antibacterial action, sterilization action, etc., and zinc oxide, silica, alumina, zeolite, bentonite, silver powder, zinc powder, copper powder, charcoal, loess, tourmaline, elvan, metal salt, etc. may be used. .

The antimicrobial agent is preferably used in an amount of 1 to 10 parts by weight based on 100 parts by weight of rubber, and when the content is less than 1 part by weight, the improvement in antimicrobial properties is insignificant, and when it exceeds 10 parts by weight, durability and adhesion are rather deteriorated.

In the present invention, charcoal, silica and silver powder may be used simultaneously as an antibacterial agent, and in this case, the weight ratio of the charcoal, silica and silver powder is preferably 100:30-50:10-30. When the weight ratio satisfies the above numerical range, the antibacterial properties and durability of the elastic rubber mat can be maximized.

The filler includes calcium carbonate, clay, diatomaceous earth, carbon black, and the like, and serves to improve strength, durability, weather resistance and abrasion resistance.

The filler is preferably used in an amount of 10 to 60 parts by weight based on 100 parts by weight of rubber, and when the content is less than 10 parts by weight, durability and weather resistance are reduced, and when the content exceeds 60 parts by weight, workability is reduced.

The plasticizer includes paraffin oil and the like, and acts as a rubber softener to improve elongation and elasticity.

The plasticizer is preferably used in an amount of 1 to 10 parts by weight based on 100 parts by weight of rubber, and when the content is less than 1 part by weight, elasticity is lowered, and when the content exceeds 10 parts by weight, strength and durability are reduced.

The activator includes zinc oxide and the like, and may activate the vulcanization accelerator and improve heat resistance and dispersibility.

The activator is preferably used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the rubber. When the content is less than 1 part by weight, heat resistance is lowered, and when the content exceeds 10 parts by weight, strength and durability are reduced.

The antioxidant is used to improve fatigue resistance and ozone resistance, and zinc-2-ethylhexanoate, 4-(1-methyl-1-phenylethyl)-N-[4-( 1-Methyl-1-phenylethyl)phenyl]aniline, zinc methyl mercaptobenzimidazole, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine, paramine wax, poly(2) ,2,4-trimethyl-1,2-dihydroquinoline), zinc diacrylate, and the like may be used.

The antioxidant is preferably used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the rubber. When the content is less than 1 part by weight, the ozone resistance is lowered, and when the content exceeds 10 parts by weight, the strength and durability are reduced.

The vulcanizing agent serves to crosslink the rubber together with the vulcanization accelerator, and the vulcanization accelerator serves to increase the vulcanization rate while maintaining scorch stability.

Sulfur, sulfur, etc. are used as the vulcanizing agent, and it is preferable to use 0.5-10 parts by weight based on 100 parts by weight of rubber.

When the content of the vulcanizing agent is less than 0.5 parts by weight, elasticity and impact resistance are lowered, and when the content exceeds 10 parts by weight, strength and durability are lowered.

The vulcanization accelerator includes N-oxydiethylene-thiocarbamyl-N'-oxydiethylene-sulfenamide, dimethyl diphenyl thiuram disulfide, and the like, and is preferably used in an amount of 0.5 to 10 parts by weight based on 100 parts by weight of rubber. .

When the content of the vulcanization accelerator is less than 0.5 parts by weight, elasticity and impact resistance are lowered, and when the content exceeds 10 parts by weight, strength and durability are lowered.

The heat stabilizer is used to improve weather resistance, heat resistance and durability, and includes without limitation benzotriazole, phenol antioxidant, alkylated monophenol, alkylthiomethylphenol, hydroquinone, alkylated hydroquinone, hydroxybenzyl, triazine, etc. can be used

The content of the heat stabilizer is preferably 0.5 to 5 parts by weight based on 100 parts by weight of rubber, and when the content is less than 0.5 parts by weight, weather resistance, heat resistance and durability are deteriorated, and when it exceeds 5 parts by weight, mechanical properties are deteriorated.

In addition, the composition may further include a silane coupling agent. The silane coupling agent has an organic functional group capable of bonding with an organic compound and a hydrolyzing group capable of reacting with an inorganic material, and improves the interfacial adhesion of the composition constituting the rubber mat, such as durability, weather resistance, abrasion resistance, heat resistance, strength, etc. can improve

The silane coupling agent includes an alkyl group-containing silane coupling agent, an amino group-containing silane coupling agent, an epoxy group-containing silane coupling agent, an acrylate group-containing silane coupling agent, an isocyanate group-containing silane coupling agent, a mercapto group-containing silane coupling agent, and a fluorine group-containing silane A coupling agent, a vinyl group-containing silane coupling agent, etc. are used.

The content of the silane coupling agent is preferably 1 to 10 parts by weight based on 100 parts by weight of the rubber. When the content is less than 1 part by weight, the effect of the addition is insignificant, and when it exceeds 10 parts by weight, the use of an excessive silane coupling agent causes the interface. Adhesive properties and strength are lowered.

In particular, it is preferable to use a silane coupling agent mixture composed of 50 to 80 wt% of an acrylate group-containing silane coupling agent and 20 to 50 wt% of an isocyanate group-containing silane coupling agent.

Acrylate group-containing silane coupling agents include 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, and 3-methacryloxypropyltriethane. oxysilane, 3-acryloxypropyltrimethoxysilane, methacryloxymethyltriethoxysilane, methacryloxymethyltrimethoxysilane, and the like.

As the isocyanate group-containing silane coupling agent, 2-isocyanate ethyltrimethoxysilane, 2-isocyanate ethyltriethoxysilane, 3-isocyanatepropyltrimethoxysilane, 3-isocyanatepropyltriethoxysilane, 4-isocyanatebutyltrimethyl oxysilane, 4-isocyanate butyltriethoxysilane, diisocyanate methoxyethylsilane, diisocyanate ethoxyethylsilane, diisocyanate methoxypropylsilane, diisocyanate ethoxypropylsilane, and the like.

In addition, the composition may further include ethylene-vinyl acetate resin (EVA) to improve strength and durability.

The content of the ethylene-vinyl acetate resin is preferably 1 to 10 parts by weight based on 100 parts by weight of rubber. When the content is less than 1 part by weight, the effect of addition is insignificant, and when it exceeds 10 parts by weight, elasticity is lowered.

In addition, the composition may further include a copolymer of an acrylate group-containing silane coupling agent and 2-hydroxyethyl acrylate (HEA).

The acrylate group-containing silane coupling agent includes 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltri ethoxysilane, 3-acryloxypropyltrimethoxysilane, methacryloxymethyltriethoxysilane, and methacryloxymethyltrimethoxysilane.

The weight ratio of the acrylate group-containing silane coupling agent and 2-hydroxyethyl acrylate is preferably 20-40:60-80, and weather resistance and durability can be maximized within the numerical range.

The copolymer is used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the rubber. When the content is less than 1 part by weight, the effect of addition is insignificant, and when it exceeds 10 parts by weight, elasticity is lowered.

In addition, the composition may further include a copolymer of an acrylate group-containing silane coupling agent, an acrylic acid-based monomer, and 2-hydroxyethyl acrylate (HEA).

The acrylic acid-based monomer is acrylic acid, methacrylic acid, methyl acrylic acid, ethyl acrylic acid, butyl acrylic acid, 2-ethyl hexyl acrylic acid, decyl acrylic acid, methyl methacrylic acid, ethyl methacrylic acid, butyl methacrylic acid, 2-ethyl hexyl methacrylic acid acid, and decyl methacrylic acid.

The weight ratio of the acrylate group-containing silane coupling agent, the acrylic acid-based monomer, and 2-hydroxyethyl acrylate is preferably 2 to 10:100:20 to 50, and weather resistance and durability can be maximized within the numerical range.

The copolymer is used in an amount of 1 to 10 parts by weight based on 100 parts by weight of the rubber. When the content is less than 1 part by weight, the effect of addition is insignificant, and when it exceeds 10 parts by weight, elasticity is lowered.

In addition, the composition may further include a silane coupling agent oligomer prepared by reacting an acrylate group-containing silane coupling agent, an epoxy group-containing silane coupling agent, and 2-hydroxyethyl acrylate (HEA).

The weight ratio of the acrylate group-containing silane coupling agent, the epoxy group-containing silane coupling agent and 2-hydroxyethyl acrylate is preferably 20-50:100:2-20.

Preferably, the weight average molecular weight of the silane coupling agent oligomer is 1,000 to 50,000 g/mol.

The epoxy group-containing silane coupling agent includes 2-glycidoxyethylmethyldimethoxysilane, 2-glycidoxyethylmethyldiethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, and 3-glycidoxypropylmethyldiethoxy. Silane, 2-glycidoxyethyltrimethoxysilane, 2-glycidoxyethyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 2-(3 ,4-epoxycyclohexyl)ethylmethyldimethoxysilane, 2-(3,4-epoxycyclohexyl)ethylmethyldiethoxysilane, 3-(3,4-epoxycyclohexyl)propylmethyldimethoxysilane, 3-( 3,4-epoxycyclohexyl)propylmethyldiethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltriethoxysilane, 3- (3,4-epoxycyclohexyl)propyltrimethoxysilane, 3-(3,4-epoxycyclohexyl)propyltriethoxysilane, and the like.

The silane coupling agent oligomer is used in an amount of 1 to 5 parts by weight based on 100 parts by weight of rubber. When the content is less than 1 part by weight, the effect of addition is insignificant, and when it exceeds 5 parts by weight, durability is reduced.

In addition, the composition may further include a softening agent, a lubricant, an antifoaming agent, a thickener, a catalyst, a diluent, a dispersing agent, a leveling agent, a pH adjusting agent, a flame retardant, a pigment, a wetting agent, an antioxidant, an ultraviolet absorber, an antistatic agent, a release agent, and the like.

In the present invention, after kneading the composition, a rubber sheet having a desired width and thickness can be manufactured using a rolling roller or the like.

In the step of attaching the synthetic resin film to the upper surface of the rubber sheet, the synthetic resin film may be attached to the surface of the rubber sheet by laminating the rubber sheet and the synthetic resin film and then passing it between rollers.

The synthetic resin film may be a polyolefin film such as a polypropylene film or a polyethylene film; polyester films, such as a polyethylene terephthalate film and a polybutylene terephthalate film; polyamide film; polystyrene film; A polycarbonate film or the like may be used without limitation, and a polypropylene film is preferably used.

An adhesive layer may be formed on one surface of the synthetic resin film, and the adhesive layer is melted by heat and pressure applied to the rollers while passing between the rollers, thereby stably bonding the rubber sheet and the synthetic resin film.

The adhesive layer is polyurethane, styrene-butadiene-styrene rubber (SBS), natural rubber (NR), butadiene rubber (BR), styrene-butadiene rubber (SBR), polychloroprene rubber (CR), acrylonitrile-butadiene rubber ( NBR), isoprene rubber (IR), ethylene-propylene rubber (EPR) and ethylene-propylene-diene rubber (EPDM) may include at least one selected from the group consisting of.

For example, the adhesive layer may include polyurethane and styrene-butadiene-styrene rubber (SBS), wherein the weight ratio of polyurethane and styrene-butadiene-styrene rubber (SBS) is 30-70:30-70. desirable.

In addition, the adhesive layer may further include ethylene-vinyl acetate resin (EVA).

The content of the ethylene-vinyl acetate resin is preferably 1 to 10 parts by weight based on 100 parts by weight of polyurethane.

In addition, the adhesive layer may further include a copolymer of an acrylate group-containing silane coupling agent and 2-hydroxyethyl acrylate (HEA).

The weight ratio of the acrylate group-containing silane coupling agent and 2-hydroxyethyl acrylate is preferably 20-40:60-80.

The copolymer is preferably used in an amount of 1 to 10 parts by weight based on 100 parts by weight of polyurethane.

In addition, the adhesive layer may further include a copolymer of an acrylate group-containing silane coupling agent, an acrylic acid-based monomer, and 2-hydroxyethyl acrylate (HEA).

The weight ratio of the acrylate group-containing silane coupling agent, the acrylic acid-based monomer and 2-hydroxyethyl acrylate is preferably 2 to 10:100:20 to 50.

The copolymer is preferably used in an amount of 1 to 10 parts by weight based on 100 parts by weight of polyurethane.

In addition, the adhesive layer may further include a silane coupling agent oligomer prepared by reacting an acrylate group-containing silane coupling agent, an epoxy group-containing silane coupling agent, and 2-hydroxyethyl acrylate (HEA).

The weight ratio of the acrylate group-containing silane coupling agent, the epoxy group-containing silane coupling agent and 2-hydroxyethyl acrylate is preferably 20-50:100:2-20.

Preferably, the weight average molecular weight of the silane coupling agent oligomer is 1,000 to 50,000 g/mol.

The silane coupling agent oligomer is preferably used in an amount of 1 to 5 parts by weight based on 100 parts by weight of polyurethane.

The roller is preferably a hot roller capable of adding heat, in this case, the temperature of the hot roller is preferably 100 to 180 ℃, more preferably 100 to 130 ℃.

In addition, the time for the laminated rubber sheet and synthetic resin film to pass through the heat roller is preferably 5 to 60 seconds, more preferably 5 to 30 seconds.

In the manufacturing of the elastic rubber mat, the rubber sheet to which the synthetic resin film is attached may be subjected to primary vulcanization molding to prepare an elastic rubber mat.

After the rubber sheet is aged, it is put into a press and vulcanized while being compressed at high temperature and high pressure to produce an elastic rubber mat.

When the rubber sheet is vulcanized, the polyurethane and styrene-butadiene-styrene rubber (SBS) included in the adhesive layer are vulcanized and crosslinked together with the composition components included in the rubber sheet, thereby integrating the synthetic resin film, the adhesive layer and the rubber sheet. Therefore, the synthetic resin film does not come off easily from the rubber sheet.

When the rubber sheet to which the synthetic resin film is attached is completely loaded on the lower mold of the press, the upper mold of the press first lowers and operates to be spaced approximately 1 cm from the rubber sheet by the detection sensor, and then the press moves down to the second. A compression process may be performed.

The temperature of the mold is 100~180℃, and the compression process is performed for 5~30 minutes under a pressure condition of 60~180kg/cm2. At this time, vulcanization molding of the rubber sheet may be performed.

At this time, the temperature of the mold can be controlled in stages, and after performing the compression process at 100-130° C. for 5-20 minutes, the compression process can be performed at 140-180° C. for 1-10 minutes. By performing the compression process step by step, the adhesiveness of the rubber sheet and the synthetic resin film can be improved.

After the vulcanization process is completed at high temperature and high pressure, the cured rubber mat is taken out from the lower mold of the press, and then secondary vulcanization can be performed.

Secondary vulcanization of the elastic rubber mat may include taking out the cured rubber mat from the lower mold of the press, and then performing secondary vulcanization.

The secondary vulcanization process is performed in a chamber at 50 to 100° C. for 1 to 10 hours, thereby removing the smell of rubber and improving the properties of the rubber mat.

The rubber mat that has undergone the secondary vulcanization process is cut to the specified width and length, and then packaged.

The rubber mat can express various colors by adding pigments as necessary.

In addition, the upper and lower surfaces of the elastic rubber mat are implemented with various shapes of protrusions, holes, embossing patterns, sand textures, etc., so that elasticity, impact resistance, sound absorption, anti-slip properties and interior effects can be imparted, and pedestrians slip or It can improve walking comfort and prevent injuries.

For example, a surface coated with a synthetic resin may have a sand texture, and an embossing pattern may be formed on a surface that is not coated with a synthetic resin.

In order to implement the protrusions, holes, embossing patterns, sand textures, etc., the surfaces of the upper and lower molds may have various shapes of protrusions, holes, embossing patterns, sand textures, and the like.

The present invention also relates to an elastic rubber mat for indoor flooring manufactured by the above manufacturing method.

The elastic rubber mat has excellent flame retardancy, antibacterial properties, durability, weather resistance, anti-slip properties, elasticity, adhesion, impact resistance, sound absorption, and the like, and thus can be used stably for a long period of time for indoor flooring.

In addition, by coating the surface of the elastic rubber mat of the present invention with a synthetic resin film, various colors, patterns, patterns, etc. can be imparted to it, thereby expressing an interior effect.

The synthetic resin film is printed with various colors, patterns, patterns, etc., so that when used as a flooring material, the interior effect can be maximized.

In addition, the synthetic resin film may be provided in a transparent form, so that the original color of the rubber sheet can be expressed or the shape of the rubber sheet can be seen as it is.

In addition, since the synthetic resin film is coated on the surface of the rubber sheet, it is possible to protect the rubber sheet, and the durability, weather resistance, elasticity, sound absorption, impact resistance, etc. of the rubber sheet can be stably maintained for a long period of time.

The present invention will be described in detail with reference to the following examples. The following examples are only exemplified for the practice of the present invention, and the content of the present invention is not limited by the following examples.

(Example 1)

70 parts by weight of natural rubber (NR), 10 parts by weight of styrene-butadiene rubber (SBR), 20 parts by weight of butadiene rubber (BR), 10 parts by weight of aluminum hydroxide, 5 parts by weight of silver powder, 20 parts by weight of calcium carbonate, 20 parts by weight of clay parts, paraffin oil 5 parts by weight, zinc oxide 3 parts by weight, zinc-2-ethylhexanoate 5 parts by weight, sulfur 1 part by weight, N-oxydiethylene-thiocarbamyl-N'-oxydiethylene-sulfenamide After kneading the composition comprising 1 part by weight and 1 part by weight of benzotriazole, a rubber sheet was prepared using a rolling roller.

After laminating a polypropylene film on the upper surface of the rubber sheet, it was passed between hot rollers to attach the polypropylene film to the surface of the rubber sheet.

At this time, an adhesive layer is formed on one surface of the polypropylene film, and while passing between the heat rollers, the adhesive layer is melted by the heat applied to the heat rollers to attach the polypropylene film to the surface of the rubber sheet.

The adhesive layer includes polyurethane and styrene-butadiene-styrene rubber (SBS), and the weight ratio of the polyurethane and styrene-butadiene-styrene rubber (SBS) was 50:50.

The temperature of the heat roller was 130° C., and the time for the laminated rubber sheet and polypropylene film to pass through the heat roller was adjusted to 10 seconds.

An elastic rubber mat was prepared by first vulcanizing the rubber sheet to which the polypropylene film was attached.

When the rubber sheet with the polypropylene film is fully loaded on the lower mold of the press, the upper mold of the press first lowers by a sensor to be 1 cm apart from the rubber sheet, and then the press moves down the second to compress During the compression process, the temperature of the mold was 130° C. and the pressure was 120 kg/cm 2 , and compression and vulcanization were performed for 15 minutes.

After the primary vulcanization process was completed, the rubber mat was taken out from the lower mold of the press, and then secondary vulcanization was performed.

The secondary vulcanization process was performed in a chamber at 60° C. for 2 hours, and the elastic rubber mat was prepared by taking it out after the secondary vulcanization process.

(Example 2)

An elastic rubber mat was prepared in the same manner as in Example 1, except that the temperature of the heat roller was adjusted to 80°C.

(Example 3)

An elastic rubber mat was prepared in the same manner as in Example 1, except that the temperature of the heat roller was adjusted to 200°C.

(Example 4)

An elastic rubber mat was prepared in the same manner as in Example 1, except that the time passing through the heat roller was adjusted to 3 seconds.

(Example 5)

An elastic rubber mat was prepared in the same manner as in Example 1, except that the time passing through the heat roller was adjusted to 70 seconds.

(Example 6)

An elastic rubber mat was prepared in the same manner as in Example 1, except that the temperature of the mold was adjusted in stages.

That is, the temperature of the mold was maintained at 120° C., and the compression process was performed at a pressure of 120 kg/cm 2 for 10 minutes, then the temperature of the mold was maintained at 150° C., and the compression process was performed at a pressure of 120 kg/cm 2 for 5 minutes. .

(Comparative Example 1)

An elastic rubber mat was prepared in the same manner as in Example 1, except that the secondary vulcanization process was not performed.

The properties of the elastic rubber mats prepared in Examples and Comparative Examples were measured, and the results are shown in Table 1 below.

(mechanical properties)

The tensile strength and elongation of the rubber mat were measured according to KS M ISO 37.

(durability)

The durability of the rubber mat was judged by immersing the rubber mat in water at 30° C. for 7 days, and then observing the state of the rubber mat.

(Combustion characteristics)

Combustion characteristics were marked as excellent, excellent, average, or poor by visually checking whether or not combustion and fire extinguishing were performed after contacting the flame with a rubber mat using a torch.

(Shock sound reduction)

After measuring the impact sound of the rubber mat, the amount of impact sound reduction was calculated.

division Example comparative example One 2 3 4 5 6 One The tensile strength
(MPa) 4.3 3.6 3.8 3.2 3.4 4.6 2.5 elongation
(%) 429 362 347 334 369 486 306 durability eminence usually Great usually usually eminence error Combustion characteristics eminence usually usually Great usually eminence error Impact sound reduction
(dB) 19 12 11 11 13 23 8

From the results of Table 1, the elastic rubber mats of Examples 1 to 5 are excellent in durability, strength, elasticity, flame retardancy and sound absorption, and in particular, Examples 1 and 6 have the best properties.

On the other hand, it can be seen that Comparative Example 1 has inferior properties compared to Example.

Claims (5)

preparing a rubber sheet by kneading a composition comprising rubber, a flame retardant, an antibacterial agent, a filler, a plasticizer, an activator, an anti-aging agent, a vulcanizing agent, a vulcanization accelerator, and a heat stabilizer;
attaching a synthetic resin film to the upper surface of the rubber sheet;
manufacturing an elastic rubber mat by first vulcanizing the rubber sheet to which the synthetic resin film is attached; and
In the manufacturing method of the elastic rubber mat for indoor flooring comprising; secondary vulcanization of the elastic rubber mat,
The composition contains 5 to 20 parts by weight of a flame retardant, 1 to 10 parts by weight of an antibacterial agent, 10 to 60 parts by weight of a filler, 1 to 10 parts by weight of a plasticizer, 1 to 10 parts by weight of an activator, 1 to 10 parts by weight of an anti-aging agent, based on 100 parts by weight of rubber. It contains 0.5 to 10 parts by weight of a vulcanizing agent, 0.5 to 10 parts by weight of a vulcanization accelerator, and 0.5 to 5 parts by weight of a heat stabilizer,
In the step of attaching the synthetic resin film to the upper surface of the rubber sheet, the rubber sheet and the synthetic resin film are laminated and passed between rollers,
An adhesive layer is formed on one surface of the synthetic resin film,
The adhesive layer includes polyurethane and styrene-butadiene-styrene rubber (SBS),
The weight ratio of the polyurethane and styrene-butadiene-styrene rubber (SBS) is 30-70:30-70,
The temperature of the roller is 100 ~ 180 ℃,
A method of manufacturing an elastic rubber mat for indoor flooring, characterized in that the time for the laminated rubber sheet and synthetic resin film to pass through the roller is 5 to 60 seconds.
delete The method of claim 1,
The rubber uses natural rubber (NR), styrene-butadiene rubber (SBR) and butadiene rubber (BR),
The method for manufacturing an elastic rubber mat for indoor flooring, characterized in that the weight ratio of the natural rubber (NR), styrene-butadiene rubber (SBR) and butadiene rubber (BR) is 100:10-20:20-50.
delete An elastic rubber mat for indoor flooring manufactured by the manufacturing method of claim 1.