KR20200001094A - outsole - Google Patents

Abstract

The present invention relates to a production method of a non-slip outsole and to a non-slip outsole produced by the method and, more specifically, to a production method of a non-slip outsole, which has a plurality of concentric fine furrows in a form of nanoparticles formed on a surface of an outsole forming mold which is in contact with the surface of the outsole so that the concentric fine furrow can be formed on the surface of the outsole formed in a forming step using the non-slip outsole rubber base material, and to a non-slip outsole produced by the method.

Description

Manufacturing method of non-slip outsole and non-slip outsole manufactured by the method

The present invention relates to a method for manufacturing an ovate slip outsole and an ovate slip outsole manufactured by the method, and more particularly, fine bones having a concentric shape on the surface of an outsole formed in the forming step using an ovate outsole rubber base. The present invention relates to a method for manufacturing an egg-slip outsole in which a plurality of concentric fine bones in the form of nanoparticles are formed on an outsole-molding mold surface in contact with the surface of an outsole so that a gully) can be formed, and an egg-slip outsole manufactured by the method.

Shoe soles are required to have various functional properties, and the non-slip characteristics of safety shoes worn at industrial sites are one of the most important physical properties.

On non-slip outsoles for safety shoes worn in industrial sites such as industrial oil-using workplaces such as machinery processing, animal fat oil companies of meat processing companies, edible or vegetable oil companies, kitchen detergents or cleaning detergents. Recognition and meaning are very important, and the function of the non-slip outsole is indescribably sensitive and is an important factor to ensure the safety of industrial sites.

In addition, non-slip outsole safety shoes must be worn to prevent slippage and safety accidents without additional equipment such as overshoes in hazardous areas of the industrial site.

As a patented technology for non-slip outsole with anti-slip function, in Korean Utility Model Utility Model Utility No. 2000-0009739, in the sole of work shoes, a non-slip powder made of quartz or cemented metal powder is mixed into the constituent material and molded into the shoe sole. Non-slip soles that have enhanced non-slip function are known. In addition, in Korean Patent Publication No. 10-2006-0099843, in the construction of a shoe composed of a bottom member, an impact absorbing member, a midsole, and an insole, the bottom member is formed by mixing abrasive material with a high elastic resin of urethane or rubber to provide frictional force. Preventive shoe soles are known.

The non-slip outsole safety shoes known in the above literature are manufactured by mixing quartz and metal powders with non-slip powders or abrasives on rubber substrates, and as the use time elapses, the non-slip powders or abrasives on the bottom surface of the outsole are dropped out. There is a problem in that the wear resistance and non-slip resistance of the outsole is degraded by falling off.

In addition, Korean Patent No. 10-0739069 discloses a method for producing an ophthalmic butyl rubber outsole made of butyl rubber, but using butyl rubber alone as a base material and by appropriately mixing inorganic materials, the non-slip physical properties and hardness of butyl rubber itself and In order not to change the properties of the resilience, but in the industrial and special workplaces, there is a problem that the anti-slip function is not sufficiently expressed when exposed to water or special external environment, such as floors coated with oil or detergent.

Although many companies are trying to develop and secure the non-slip outsole safety shoe using black butyl rubber, the products developed by the non-slip outsole safety shoe maker are perfect. Rather than satisfying slip, it is used in combination with general rubber materials.

Outsoles used for the safety of non-slip outsoles include ethylene vinyl acetate copolymer (EVA), 1,2-polybutadiene (RB), natural rubber (NR), styrene-butadiene rubber (SBR) and butadiene rubber (BR). Outsole was manufactured by mixing butyl rubber, which is used as a base material or a blended polymer thereof, and has excellent performance in foldability and anti-slip function. However, the mixed rubber of butyl rubber has lowered mechanical strength or its butyl rubber during compound press. There is a problem that the slip resistance of the property is changed or burned easily, the production is poor.

Mixed rubber vulcanizate of butyl rubber manufactured by the safety shoe maker of the non-slip outsole takes a considerable time in the crosslinking and foaming process, and thus has a problem in that the productivity is weak and it cannot be used for many purposes.

Safety of non-slip outsoles Shoes that can solve the risk of physical properties and fall that can satisfy their own non-slip properties, hardness and resilience are required to develop non-slip outsoles of various structures that exhibit their own properties.

The present invention is an improvement of the conventional problem, the nanoparticles on the surface of the outsole molding mold in contact with the surface of the outsole to form concentric fine bones on the surface of the outsole to be molded in the molding step using the non-slip outsole rubber base An object of the present invention is to provide a molded mold of the non-slip outsole in which a plurality of concentric fine bones are formed and an outsole manufactured.

The present invention uses a plurality of outsole molding dies in which a plurality of concentric fine bones in the form of nanoparticles are formed on the surface of the outsole molding mold in contact with the surface of the outsole. The present invention relates to a method for manufacturing an ovate slip outsole, which comprises manufacturing an ovate slip out sole in which concentric fine bone is formed.

The present invention is a non-slip outsole rubber base material in contact with the surface of the outsole molding die in contact with the surface of the outsole mold so that the convex shape of the fine bone can be formed on the surface of the outsole is formed in the molding step, a large number of concentric circular bone in the form of nanoparticles The non-slip outsole can be easily mass-produced using the molded mold of the dog-slip outsole.

Figure 1 is an enlarged photo of concentric fine bones in the outsole of the present invention
Figure 2 is an enlarged photo of the concentric fine bones in the outsole of the present invention
Figure 3 is an enlarged cross-sectional view of the concentric fine bones in the outsole of the present invention

The present invention uses a plurality of outsole molding dies in which a plurality of concentric fine bones in the form of nanoparticles are formed on the surface of the outsole molding mold in contact with the surface of the outsole. The present invention relates to a method for manufacturing an oval slip outsole, which comprises manufacturing an oval slip outsole in which fine bones of concentric form are formed.

In the present invention, the molding die is characterized in that the material of the surface of the molding die in contact with the surface of the outsole is any one selected from iron, copper, aluminum and alloys of iron and copper.

In the present invention, the non-slip pattern is characterized in that the concentric circles continuously overlapped at regular or irregular intervals.

In the present invention, the non-slip outsole rubber base is 100 parts by weight of a rubber base consisting of 40 to 60 parts by weight of butadiene rubber (BR) and 40 to 60 parts by weight of natural rubber; 10 to 30 parts by weight of the non-slip material selected from waste glass nanotube powder and carbon nanotube powder; 3 to 5 parts by weight of dispersant for non-slip wood powder; And a rubber additive; wherein the rubber additive is 3 to 5 parts by weight of a metal oxide, 1 to 2 parts by weight of an antioxidant, 1 to 3 parts by weight of surfactant, 0.5 to 1.5 parts by weight of sulfur, 0.5 to 1.0 parts by weight of vulcanization accelerator. And a foaming agent of 0.5 to 1.0, wherein the dispersing agent for the non-slip material powder is any one selected from polyacrylate, acrylic polymer emulsion, sulfonated polystyrene, and water-soluble flaxseed oil. It is characterized by that.

The present invention uses a plurality of outsole molding dies in which a plurality of concentric fine bones in the form of nanoparticles are formed on the surface of the outsole molding mold in contact with the surface of the outsole. The present invention relates to an ovule slip outsole, which is manufactured by a method of manufacturing an ovule slip outsole in which fine bone in a concentric shape is formed.

1 to 3 in the present invention, the non-slip outsole molding mold is an outsole in contact with the surface of the outsole to form concentric fine bones on the surface of the outsole formed in the molding step using the non-slip outsole rubber base material On the surface of the molding die, a plurality of concentric fine bones in the form of nanoparticles are formed.

1 to 3, in the present invention, the non-slip outsole molding mold has a plurality of nanoparticle-shaped concentric fine bones formed on the surface of the outsole molding mold in contact with the surface of the outsole. The fine gully is maintained on the surface of the outsole mold, and the air flows through the fine gully held between the outsole mold surfaces in contact with the surface of the outsole. The protrusion of the slip pattern increases, and the increased slip-like protrusions improve the holding power of a plurality of main protrusions having a wider average width than the average width of the concentric fine bones.

In addition, the basic principle of this technology is the concentric gully, which applies the principle that insects and amphibians do not slip on the vertical wall, and increases the frictional force of the fine hairs of the insect legs so that they can move freely without being affected by gravity. It is a principle.

In the present invention as shown in Figures 1 to 3, the non-slip outsole molding mold is the surface of the outsole in contact with the surface of the outsole molding mold in which a plurality of concentric fine bones in the form of nanoparticles are formed. Entering into the groove of the pattern, then, the non-slip projections are formed on the surface of each of the main projections by the non-slip pattern.

In the present invention, as shown in Figures 1 to 3, the molding die surface in contact with the surface of the outsole material is selected from iron, copper, aluminum and alloys of iron and copper, using a non-slip outsole rubber base Concentric fine bones may be formed on the surface of the outsole to be molded in the molding step.

In the present invention, as shown in Figures 1 to 3, the non-slip pattern is formed in the form of concentric circles continuously overlapping at regular or irregular intervals, concentric circles on the surface of the outsole is formed in the molding step using the non-slip outsole rubber base Fine bones can be formed.

In the present invention, the rubber substrate is preferably made of 40 to 60 parts by weight of butadiene rubber (BR), 40 to 60 parts by weight of natural rubber. Butadiene rubber (BR) used in the present invention serves to improve the excellent mechanical strength and wear resistance, but when the amount of butadiene rubber is less than 40 parts by weight, there is a fear that physical properties such as mechanical strength, wear resistance, etc. are deteriorated, butadiene rubber When the amount of is used exceeds 60 parts by weight, butadiene rubber may have low flowability, which may lower workability. And butadiene rubber is preferably a viscosity of 40 to 60, the sheath content of 95 to 99%.

Natural rubber used in the present invention is excellent in flowability and has high affinity with the non-slip material selected from waste glass nanotube powder and carbon nanotube powder, and serves to improve the dispersibility and reinforcement of the non-slip material. When the amount of is used is less than 40 parts by weight, the dispersibility is poor, there is a fear that the slip resistance and mechanical strength is lowered. When the amount of the natural rubber used is more than 60 parts by weight, wear resistance may be reduced.

The non-slip material selected from waste glass nanotube powder and carbon nanotube powder used in the present invention serves to improve mechanical strength and abrasion resistance as an excellent outsole non-slip agent, and when the amount is less than 10 parts by weight, the mechanical strength and wear resistance Physical properties such as the like may be deteriorated, and when the amount of butadiene rubber used exceeds 30 parts by weight, workability may be deteriorated.

In the present invention, when the non-slip material selected from waste glass nanotube powder and carbon nanotube powder is used, a dispersant for the non-slip material powder must be used so that the dispersion can be easily performed using a dispersant, and polyacrylate (polyacrylate ), Acrylic polymer emulsion, sulfonated polystyrene and water-soluble flaxseed oil are preferably used.

The dispersant for the non-slip material powder used in the present invention should be used to disperse the non-slip material selected from waste glass nanotube powder and carbon nanotube powder, and serves to control the crosslinking rate and improve physical properties. It is preferable to use 3-5 weight part with respect to weight part. If the amount of the metal oxide used is less than 3 parts by weight, the crosslinking rate may drop, resulting in deterioration of physical properties. If the amount of the metal oxide used is more than 5 parts by weight, the crosslinking rate may be too fast, leading to deterioration of physical properties.

The metal oxide used in the present invention plays a role of controlling the crosslinking rate and improving physical properties. The amount of the metal oxide is preferably used in an amount of 3 to 5 parts by weight based on 100 parts by weight of the substrate. If the amount of the metal oxide used is less than 3 parts by weight, the crosslinking rate may drop, resulting in deterioration of physical properties. If the amount of the metal oxide used is more than 5 parts by weight, the crosslinking rate may be too fast, leading to deterioration of physical properties. The metal oxide used in the present invention may be selected from one or more of cadmium oxide, zinc oxide, magnesium oxide, mercury oxide, tin oxide, lead oxide, and calcium oxide.

The anti-aging agent used in the present invention serves to prevent the deterioration of the physical properties appearing in the compound production, transport and storage of rubber, the amount of the anti-aging agent is preferably used 1 to 2 parts by weight based on 100 parts by weight of the base material. If the amount of the anti-aging agent is less than 1 part by weight, it is difficult to expect anti-aging effect. If the amount of the anti-oxidant is more than 2 parts by weight, the amount of the anti-oxidant is excessive, so that the anti-aging agent is ejected to the surface of the rubber compound or the like. There is a concern.

The anti-aging agent used in the present invention is N, N'-diphenyl-p-phenylenediamine, 4,4'-bis (alpha, alpha-dimethylbenzyl) di- Phenylamine (4,4'-Bis (alpha, alpha-dimethylbenzyl) di-phenylamine), polymerized 1,2-dihydro-2,2,4-trimethyl quinoline (polymerized 1,2-dihydro-2,2,4 -trimethyl quinoline) can be used by selecting one or more.

Surfactant used in the present invention serves to improve the mechanical properties such as tensile strength to improve wear resistance, etc., the amount of the surfactant is preferably used 1 to 3 parts by weight based on 100 parts by weight of the substrate. If the amount of the surfactant is less than 1 part by weight, it is difficult to expect the effect of improving the mechanical properties. If the amount of the surfactant is more than 3 parts by weight, it is effective to improve the mechanical properties but to improve the wear resistance. This is weak.

The surfactant used in the present invention is a nonionic surfactant, and one or more of polyethylene glycol, polyoxyethylene sorbitan monoparmitate, polyoxyethylene sorbitan monostearate, glycerol monostearate, and glycerol monooleate The above can be selected and used.

Sulfur used in the present invention is a vulcanizing agent, its amount is preferably used 0.5 to 1.5 parts by weight based on 100 parts by weight of the substrate. If the amount of sulfur is less than 0.5 parts by weight, the rubber composition may not be vulcanized properly, which may cause difficulty in molding the rubber. If the amount of sulfur is more than 1.5 parts by weight, preliminary vulcanization may occur and the hardness of the molded rubber may be rapidly increased. .

The vulcanization accelerator used in the present invention is used to shorten the molding time of the rubber composition and to obtain an appropriate crosslinked structure. The amount of the vulcanization accelerator is preferably 0.5 to 1.0 parts by weight based on 100 parts by weight of the substrate. If the amount of the organic peroxide is less than 0.5 parts by weight, the rubber composition may not be vulcanized properly and the physical properties of the rubber molding may not appear properly. If the amount of the organic peroxide is more than 1.0 part by weight, the crosslinking density may be increased due to excessive vulcanization. There is a fear that the physical properties of the rubber is significantly reduced. The vulcanization accelerator used in the present invention may be selected from one or more of bis (2-benzothiazole) disulfide, 2-mercaptobenzothiazole, and 2-mercaptoimidazole.

The blowing agent used in the present invention forms a fine foaming structure and serves to improve the slip slip property, and the amount of the blowing agent is preferably 0.5 to 1.0 parts by weight based on 100 parts by weight of the base material. If the amount of the blowing agent is less than 0.5 parts by weight it is difficult to form a foam structure, when the amount of the blowing agent is more than 1.0 parts by weight there is a fear that the mechanical properties due to excessive foaming.

The non-slip pad for shoe outsole of the present invention is excellent in slip resistance compared to the conventional rubber composition and excellent in dynamic slip slip in the industrial field.

Example 1:

100 parts by weight of a rubber base composed of 50 parts by weight of butadiene rubber (BR) and 50 parts by weight of natural rubber using a banbury mixer or kneader, 20 parts by weight of carbon nanotube powder non-slip material, and no slip A non-slip rubber mixture is prepared by mixing 5 parts by weight of polyacrylate, which is a dispersant for lumber powder, and a rubber additive, and a vulcanizing agent, a vulcanization accelerator and a foaming agent are added to the non-slip rubber mixture using an open roll mill. The addition of the sulfur-added non-slip rubber mixture was prepared by extruding the sulfur-added non-slip rubber mixture using a single screw or twin screw extruder and crosslinked by heating in a steam oven to prepare a non-slip outsole.

Example 2:

100 parts by weight of a rubber base consisting of 50 parts by weight of butadiene rubber (BR) and 50 parts by weight of natural rubber using a banbury mixer or kneader, 20 parts by weight of waste glass nanotube powder nonslip material, and no slip A non-slip rubber mixture is prepared by mixing 5 parts by weight of polyacrylate, which is a dispersant for lumber powder, and a rubber additive, and a vulcanizing agent, a vulcanization accelerator and a foaming agent are added to the non-slip rubber mixture using an open roll mill. The addition of the sulfur-added non-slip rubber mixture was prepared by extruding the sulfur-added non-slip rubber mixture using a single screw or twin screw extruder and crosslinked by heating in a steam oven to prepare a non-slip outsole.

Example 3:

100 parts by weight of a rubber base composed of 50 parts by weight of butadiene rubber (BR) and 50 parts by weight of natural rubber using a banbury mixer or kneader, 20 parts by weight of carbon nanotube powder non-slip material, and no slip 5 parts by weight of an acrylic polymer emulsion, a dispersant for pulverizing powder, and a rubber additive are mixed to prepare a non-slip rubber mixture, and a vulcanizing agent and a vulcanization accelerator to the non-slip rubber mixture using an open roll mill. And adding a blowing agent to prepare a sulfur-added non-slip rubber mixture, and extruded the sulfur-added non-slip rubber mixture using a single screw or twin screw extruder and crosslink the extruded yellow additive non-slip rubber mixture by heating in a steam oven. Prepared.

Example 4:

100 parts by weight of a rubber base composed of 50 parts by weight of butadiene rubber (BR) and 50 parts by weight of natural rubber using a banbury mixer or kneader, 20 parts by weight of carbon nanotube powder non-slip material, and no slip 5 parts by weight of sulfonated polystyrene, which is a dispersant for pulverizing powder, and rubber additives are mixed to prepare a non-slip rubber mixture, and a vulcanizing agent, a vulcanization accelerator, and a vulcanization agent to the non-slip rubber mixture using an open roll mill. A sulfur-added non-slip rubber mixture is prepared by adding a blowing agent, and the extruded yellow-added non-slip rubber mixture is extruded using a single or twin screw extruder, and the extruded yellow non-slip rubber mixture is heated and crosslinked in a steam oven to prepare an non-slip outsole. It was.

Example 5:

100 parts by weight of a rubber base composed of 50 parts by weight of butadiene rubber (BR) and 50 parts by weight of natural rubber using a banbury mixer or kneader, 20 parts by weight of carbon nanotube powder non-slip material, and no slip 5 parts by weight of water-soluble flaxseed oil, a dispersant for lumber powder, and rubber additives were mixed to prepare an egg-slip rubber mixture, and sulfur was added by adding a vulcanizing agent, a vulcanization accelerator and a foaming agent to the egg-slip rubber mixture using an open roll mill. The added non-slip rubber mixture was prepared and the extruded sulfur-added non-slip rubber mixture was extruded using a single screw or twin screw extruder, and crosslinked by heating in a steam oven to prepare the non-slip outsole.

The physical properties of the non-slip pad of the present invention were measured by the test method as follows.

-Specific gravity: The specific gravity of the outsole was removed five times using an automatic specific gravity measurement device after removing the surface, and the average value was taken.

Hardness: Hardness was measured in accordance with ASTM D-2240 with an Asker A type hardness meter on the surface of the outsole.

-Tensile strength: After making the outsole to 3mm thickness, the specimen No. 2 according to KS M6518 was made with a cutter to measure the tensile strength and elongation according to KS M 6518. At this time, three test pieces were used for the same test.

-Tear strength: Tear test was measured according to KS M6518, and the measurement speed was measured five times at 100m / min.

Abrasion resistance test: To measure the abrasion resistance characteristics of the manufactured outsole, the standardized specimens were tested five times using NBS abrasion tester, and the wear resistance test value was excluded except the maximum minimum value.

-Slip resistance: The slip resistance of the manufactured outsole was measured and averaged three times with standardized specimens using a slip resistance measuring instrument in dry and wet conditions and then averaged as test values.

In the embodiment, the dispersing agent for the non-slip material powder is water-soluble linseed oil among polyacrylate, acrylic polymer emulsion, sulfonated polystyrene, and water-soluble flaxseed oil. It was confirmed that the non-slip product quality was excellent and the non-slip property was excellent.

As described above, the present invention has been proved to be excellent in physical properties and non-slip properties through the above embodiments, but the present invention is not necessarily limited only by the above configuration, and does not depart from the technical spirit of the present invention. Many substitutions, modifications, and variations are possible.

The present invention is excellent in non-slip properties and mechanical strength by mixing carbon nanotube powder non-slip material in the rubber substrate, and can be applied to hiking shoes and various shoes, industrial site (industrial oil use workshop / meat processing, etc.) It is widely used in other industries as it can prevent slippage and prevent safety accidents without additional equipment such as gumshoes in hazardous areas such as animal fat oil business / edible or vegetable oil business / kitchen detergent or cleaning detergent business). It is expected to apply.

100: concentric fine bone

Claims (5)

The outsole molding die in contact with the surface of the outsole is formed with a plurality of concentric fine bones in the form of nanoparticles on the surface of the outsole. Method for producing an ovule slip outsole, characterized in that to produce an ovule slip outsole in which fine bone is formed. The method of claim 1, wherein the molding die is any one selected from the group consisting of iron, copper, aluminum, and an alloy of iron and copper. The method of claim 1, wherein the non-slip pattern has a shape in which concentric circles continuously overlap each other at regular or irregular intervals. According to claim 1, The non-slip outsole rubber base material 100 parts by weight of a rubber base consisting of 40 to 60 parts by weight of butadiene rubber and 40 to 60 parts by weight of natural rubber; 10 to 30 parts by weight of the non-slip material selected from waste glass nanotube powder and carbon nanotube powder; 3 to 5 parts by weight of dispersant for non-slip wood powder; And rubber additives;
The rubber additive is composed of 3 to 5 parts by weight of metal oxide, 1 to 2 parts by weight of antioxidant, 1 to 3 parts by weight of surfactant, 0.5 to 1.5 parts by weight of sulfur, 0.5 to 1.0 parts by weight of vulcanization accelerator and 0.5 to 1.0 of blowing agent. ,
The dispersing agent for the non-slip material powder is any one selected from polyacrylate, acrylic polymer emulsion, sulfonated polystyrene, and water-soluble linseed oil. Manufacturing method. Non-slip outsole, characterized in that produced by the method of claim 1.

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