KR102068522B1 - over shoes for safety shoes - Google Patents

Abstract

The present invention relates to an overshoe for shoes comprising a non-slip outsole. More specifically, the present invention relates to an overshoe for shoes comprising a non-slip outsole. More specifically, by wearing the overshoe for shoes comprising a non-slip outsole, worker safety in a workplace can be secured while improving work efficiency.

Description

Overshoes for safety slips {over shoes for safety shoes}

The present invention relates to an overshoes for shoes consisting of non-slip outsole, and more particularly, to wearing shoes overshoes consisting of non-slip outsole, worker safety in oil bottom, restaurant detergent floor, snow bottom, ice surface, workshop, etc. Of course, it also relates to shoe soles that can be used more efficiently or conveniently during work.

Shoes have changed from simply protecting their feet to symbolizing class and status, and today they are specialized and segmented for the purpose, environment of use, and users. We develop and launch a variety of shoes with different functions according to the preferences and characteristics of the shoes. The functionalization of these shoes has been developed along with the development of new materials and structures for shoes and biomechanical research.

Safety shoes have evolved along with the segmentation and functionalization of shoes, ranging from the basic functions of protecting feet from falling objects and sharp objects to safety shoes with oil resistance and safety shoes with slip resistance. It is subdivided into various types such as safety shoes for manufacturing and safety shoes for construction.

According to the data of the Korea Occupational Safety and Health Agency, the need for special safety shoes that can reduce slippage to a minimum in order to reduce human or material damage caused by safety accidents due to a crash accident at work and to reduce human or material damage due to safety accidents is increasing. Safety shoes have been developed to impart non-slip.

The present invention is to improve the problems in the prior art is made of a non-slip outsole is to provide a shoe sole made of a non-slip outsole to increase the efficiency of the work as well as to ensure the safety of the worker when wearing such an overshoe.

The present invention is a front fastening portion is formed in the front of the central body portion, the through hole is formed in the front fastening portion to be fastened in the state that the front of the shoe is inserted, the elastic support band is formed in the central portion of the through hole The rear fastening part is formed at the rear of the central body part, and the through hole is formed at the rear fastening part to be fastened in a state where the rear of the shoe is inserted, and handles are formed at both ends of the rear fastening part. The non-slip outsole was attached to the bottom surface of the main body.

When wearing the overshoes of the present invention, as well as ensuring the safety of the operator has the effect of increasing the efficiency of the work more.

In particular, in the oil floor, restaurant detergent floor, snow floor, ice surface, workshop, etc., it is possible to ensure the safety of the worker, as well as to increase the efficiency of the work or to use conveniently during activities.

In addition, the outsole used in the present invention is in the form of nanoparticles on the surface of the outsole molding die contacted with the surface of the outsole so that fine bones of concentric circles can be formed on the surface of the outsole formed in the forming step using the non-slip outsole rubber base. It is a very useful invention that can easily mass-produce the non-slip outsole by using a molding mold of the non-slip outsole in which a plurality of concentric fine bones are formed.

1 is a perspective view showing a shoe sole of the present invention.
Figure 2 is a perspective view showing a shoe sole of the present invention.
Figure 3 is an exploded perspective view showing the shoe sole of the present invention.
Figure 4 is a state of use shoes for shoes of the present invention.
Figure 5 is a state of use shoes for shoes of the present invention.
Figure 6 is also used state of the shoe for the shoe of the present invention.
Figure 7 is another embodiment of the present invention.
Figure 8 is an enlarged photo of the concentric fine bones in the outsole of the present invention.

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

The terms or words used in the specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors are able to properly define the concept of terms in order to best describe their invention in the best way possible. It should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

In the present invention, the front fastening part 10 is formed at the front of the central body part 20, and the through hole 14 is formed at the front fastening part 10 so that the front of the shoe 210 can be fastened in an inserted state. 14 ') is formed, and an elastic support band 12 having an elastic hole 12-3 is formed at the central portion of the through holes 14 and 14', and is formed at the rear of the central body 20. The rear fastening part 30 is formed, and the through hole 34 is formed in the rear fastening part 30 so that the rear of the shoe 220 can be inserted in the inserted state, and the rear fastening part 30 is formed. Handles 36 and 36 'are formed at both ends of the shoe sole, and the shoe sole is made of a non-slip outsole, characterized in that the non-slip outsole 40 is attached to the bottom surface of the central body 20. .

In the present invention, the non-slip outsole 40 is used in the molding step of using an outsole rubber base using an outsole molding mold in which a plurality of nanoparticle-shaped concentric fine bones are formed on the surface of the outsole molding mold in contact with the surface of the outsole. It characterized in that to produce a non-slip outsole in which a plurality of concentric fine bones are formed on the surface of the outsole to be molded.

In the present invention, the molding die is characterized in that the material of the molding die surface 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 are 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 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 a surfactant, 0.5 to 1.5 parts by weight of sulfur, 0.5 to 1.0 parts by weight of a vulcanization accelerator. And a blowing 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.

1 to 6, the front fastening part 10 is formed at the front of the central body part 20, and the front fastening part 10 can be fastened in a state where the front of the shoe 210 is inserted. Is formed in the through hole (14, 14 '), the elastic support band 12 having an elastic hole (12-3) is formed in the central portion of the through hole (14, 14'), the central body The rear fastening portion 30 is formed at the rear of the portion 20, and the through hole 34 is formed in the rear fastening portion 30 so that the rear of the shoe 220 can be inserted into the inserted state. Handles 36 and 36 ′ are formed at both ends of the rear fastening portion 30, and the non-slip outsole 40 is attached to the bottom surface of the central body portion 20 so that the worker's safety when wearing the booties. Of course, this guarantees the efficiency of the work.

Another embodiment of the present invention is an elastic support band (12-1, 12-2) having an elastic hole (12-3) on both sides of the central portion of the through hole (14, 14 ') so as to span between the front of the shoe There is a very useful feature that can form a solid wear.

The outsole used in the present invention is an outsole of the outsole formed in the molding step using the outsole rubber base by using an outsole molding die 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. An oval slip outsole in which a plurality of concentric fine bones are formed on the surface.

As shown, the non-slip outsole used in the present invention is an outsole in which the molding die is in contact with the surface of the outsole so that fine bones of concentric circles can be formed on the surface of the outsole formed in the molding step using the non-slip outsole rubber base. On the surface of the molding die, a plurality of concentric fine bones in the form of nanoparticles are formed.

The mold of the non-slip outsole used in the present invention has a plurality of concentric fine bones in the form of nanoparticles formed on the surface of the outsole molding mold which is in contact with the surface of the outsole. The fine gully is maintained on the surface, and as the air escapes through the fine gully held between the outsole mold surfaces in contact with the surface of the outsole, the protrusion of the non-slip pattern in the direction of the exiting air is released. The increased slip-like protrusions increase the holding power of a plurality of main protrusions having a wider average width than the average width of 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 insect legs so that they can move freely without being affected by gravity. It is a principle.

The mold of the non-slip outsole used in the present invention is the surface of the outsole in contact with the surface of the outsole molding die in which a plurality of concentric micro-bones in the form of nanoparticles are formed as the groove of the non-slip pattern engraved on the surface of the outsole molding mold. After entering, the non-slip protrusions are formed on the surface of each of the main protrusions by the non-slip pattern.

As shown, the molding mold of the outsole used in the present invention is a material of the surface of the molding mold in contact with the surface of the outsole is selected from iron, copper, aluminum, and an alloy of iron and copper, a non-slip outsole rubber base is used. Thus, the fine bone of concentric shape may be formed on the surface of the outsole to be molded in the molding step.

In the outsole used in the present invention, the non-slip pattern is formed in a shape in which concentric circles are continuously overlapped at regular or irregular intervals, so that the fine bones of concentric circles on the surface of the outsole formed in the forming step using the non-slip outsole rubber base This can be formed.

Rubber base material of the outsole used in the present invention 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 the viscosity of the pattern is 40 to 60, sheath content of 95 to 99%.

The natural rubber of the outsole 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 dispersibility and reinforcement of the non-slip material. When the amount of the natural rubber is less than 40 parts by weight, the dispersibility may be poor, and the slip resistance and mechanical strength may be lowered. When the amount of the natural rubber is more than 60 parts by weight, the wear resistance may be reduced.

In the outsole used in the present invention, the non-slip material selected from waste glass nanotube powder and carbon nanotube powder is an excellent outsole non-slip agent, which serves to improve mechanical strength and abrasion resistance. If the amount of butadiene rubber exceeds 30 parts by weight, the workability may decrease.

When the non-slip material selected from waste glass nanotube powder and carbon nanotube powder is used in the outsole of the present invention, a dispersant for the non-slip material powder must be used so that the dispersion can be easily performed by using a dispersant, and polyacrylate Preference is given to using any one selected from polyacrylate, acrylic polymer emulsion, sulfonated polystyrene and water-soluble flaxseed oil.

In the outsole used in the present invention, the dispersant for the non-slip material powder should be used to disperse the non-slip material selected from the waste glass nanotube powder and the carbon nanotube powder. It is preferable to use 3-5 weight part with respect to 100 weight part of base materials. If the amount of the metal oxide is less than 3 parts by weight, the crosslinking rate may drop and the physical properties may be degraded. If the amount of the metal oxide is more than 5 parts by weight, the crosslinking rate may be too fast, thereby deteriorating physical properties.

In the outsole used in the present invention, the metal oxide plays a role of controlling the crosslinking rate and improving physical properties, and 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 is less than 3 parts by weight, the crosslinking rate may drop and the physical properties may be degraded. If the amount of the metal oxide is more than 5 parts by weight, the crosslinking rate may be too fast, thereby deteriorating 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.

In the outsole used in the present invention, the anti-aging agent plays a role to prevent the deterioration of physical properties appearing in the manufacture, transportation and storage of the rubber, and the amount thereof is preferably used in an amount of 1 to 2 parts by weight based on 100 parts by weight of the substrate. 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-aging agent is more than 2 parts by weight, the amount of the anti-oxidant is excessive, and the anti-aging agent is ejected to the surface of the rubber compound or the like. There is a concern.

The anti-aging agent in the outsole 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.

In the outsole used in the present invention, the surfactant plays a role of improving mechanical properties such as tensile strength to improve wear resistance, and the amount of the surfactant is preferably used in an amount of 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, the mechanical properties are improved, but the wear resistance is improved. This is weak.

In the outsole used in the present invention, the surfactant is a nonionic surfactant, which is one of polyethylene glycol, polyoxyethylene sorbitan monoparmitate, polyoxyethylene sorbitan monostearate, glycerol monostearate, and glycerol monooleate. Or you can use more than that.

In the outsole used in the present invention, sulfur is a vulcanizing agent, and its amount is preferably 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, premature vulcanization may occur and the hardness of the molded rubber may increase rapidly. .

In the outsole used in the present invention, the vulcanization accelerator 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 used by selecting one or more of bis (2-benzothiazole) disulfide, 2-mercaptobenzothiazole, and 2-mercaptoimidazole.

In the outsole used in the present invention, the foaming agent forms a micro-foamed structure and serves to improve non-slipness. The amount of the foaming agent is preferably used in an amount of 0.5 to 1.0 parts by weight based on 100 parts by weight of the substrate. If the amount of the blowing agent is less than 0.5 parts by weight it is difficult to form a foam structure, if 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.

Outsole non-slip pad used in the present invention is excellent in non-slip properties and excellent dynamic non-slip properties in the industrial field compared to the conventional rubber composition.

Example 1:

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 carbon nanotube powder non-slip material, and non-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 to heat crosslinked in a steam oven to prepare a non-slip outsole.

Example 2:

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 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 to heat crosslinked in a steam oven to prepare a non-slip outsole.

Example 3:

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 carbon nanotube powder non-slip material, and non-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 by 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 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 carbon nanotube powder non-slip material, and non-slip 5 parts by weight of sulfonated polystyrene, which is a dispersant for lumber powder, and a rubber additive are mixed to prepare a non-slip rubber mixture, and a vulcanizing agent, a vulcanization accelerator, and a vulcanized rubber mixture using an open roll mill. A sulfur-added non-slip rubber mixture was prepared by adding a blowing agent, and the extruded yellow-added non-slip rubber mixture was extruded using a single or twin screw extruder, and the extruded yellow non-slip rubber mixture was heated and crosslinked in a steam oven to prepare an egg slip outsole. It was.

Example 5:

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 carbon nanotube powder non-slip material, and non-slip 5 parts by weight of water-soluble flaxseed oil, which is a dispersant for lumber powder, and rubber additives are mixed to prepare a non-slip rubber mixture, and sulfur is added by adding a vulcanizing agent, a vulcanization accelerator, and a blowing agent to the non-slip rubber mixture using an open roll mill. The added non-slip rubber mixture was prepared, and the extruded yellow added non-slip rubber mixture was extruded using a single screw or twin screw extruder, and the extruded non-slip rubber mixture was heated and crosslinked in a steam oven to prepare an egg 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 according to ASTM D-2240 with an Escker A type hardness meter on the surface of the outsole.

-Tensile strength: After making the outsole of 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 then 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 dispersant for the non-slip material powder is polyacrylate, acrylic polymer emulsion, and sulfonated polystyrene. It was confirmed that the excellent slip slip.

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 spirit of the present invention. Many substitutions, modifications, and variations are possible.

The present invention is a carbon nanotube powder non-slip material is mixed with a rubber base material is excellent in non-slip characteristics and mechanical strength by the extrusion process can be applied to hiking shoes and various shoes, industrial site (industrial oil use workshop / meat processing, etc.) It can be prevented from slipping and 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.

10: Front fastening part 14, 14 ': Through hole
20: central body portion 30: rear fastening portion
40: non-slip outsole
100: concentric fine bones 200: shoes

Claims (4)

The front fastening part 10 is formed at the front of the central body part 20, and the through holes 14 and 14 ′ are formed in the front fastening part 10 to be fastened in a state where the front of the shoe 210 is inserted. Is formed, the elastic support band 12 having an elastic hole 12-3 is formed in the central portion of the through holes (14, 14 '), the rear fastening portion at the rear of the central body portion 20 30 is formed, through-holes 34 are formed in the rear fastening portion 30 so that the back of the shoe 220 can be inserted in the inserted state, and both ends of the rear fastening portion 30 are formed. Footwear 36, 36 'is formed, the shoe sole made of a non-slip outsole, characterized in that the non-slip outsole 40 is attached to the bottom surface of the central body portion 20.
2. The elastic support bands 12-1 and 12-2 according to claim 1, wherein the elastic support bands 12 are formed in the center portion of the through holes 14 and 14 'in both sides of the through holes. Footwear made of non-slip outsole, characterized in that formed.
The method of claim 1, wherein the non-slip outsole in the molding step using the outsole rubber base by using the outsole molding die in which a plurality of concentric fine bones in the form of nanoparticles are formed on the surface of the outsole molding mold contacting the surface of the outsole. Footwear for shoes made of a non-slip outsole, characterized in that for producing a non-slip outsole in which a plurality of concentric fine bone is formed on the surface of the outsole to be molded.
According to claim 3, The non-slip outsole rubber base material 100 parts by weight of the 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 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 a surfactant, 0.5 to 1.5 parts by weight of sulfur, 0.5 to 1.0 parts by weight of a vulcanization accelerator. And a foaming agent of 0.5 to 1.0, wherein the dispersing agent for the non-slip material powder is a polyacrylate, an acrylic polymer emulsion, and an sulphated polystyrene. Shoe booties consisting of.

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