KR20170106003A - Non-slip shoes sole manufacturing method that includes a latex - Google Patents

Abstract

More particularly, the present invention relates to a method for manufacturing a shoe sole comprising a first latex made of natural latex as a main ingredient and an auxiliary dough containing sulfur, The main raw material is mixed and kneaded. Then, the sole forming molding material and auxiliary dough are thoroughly mixed and kneaded, and the raw material is extruded into a sheet form through a roller machine. The primary latex contained in the sole is 15 to 18% When the dough is extruded into a sheet form, the dough of the sole is not strongly adhered to the surface of the roller, so that the productivity is not hindered, and a secondary dough containing sulfur is mixed with the main material for forming the sole, In the process of mixing the main material with the molding material of the sole, So that uniform vulcanization can be generated on a rubber sheet to be produced later, and the rubber sheet extruded through the roller machine is impregnated with zinc water and dried, thereby causing the rubber sheets to stick together even when the rubber sheets are stacked So that it is possible to improve the productivity of the sole of the shoe sole.
The present invention relates to a shoe sole molding material mixing step (2) for mixing a shoe sole molding material containing a primary latex formed in a first latex forming preparation step (1), a first latex forming preparation step (1) (4) for preparing an auxiliary dough by mixing sulfur and synthetic rubber separately from the main material kneading step (3), a main material kneading step (3) for kneading the main material mixed in the step (2) A rubber sheet forming step (5) of extruding the dough and an auxiliary dough in a sheet form while mixing them evenly, a zinc water impregnating step (6) of impregnating and taking out the rubber sheet formed in the rubber sheet forming step (5) A drying step (7) for drying the rubber sheet coated with zinc water, a cutting step (8) for cutting the rubber sheet passed through the drying step (7) to fit the shape of a shoe sole to be manufactured, Molded rubber sheet cut from It characterized in that it comprises a sole molding step (9) for forming the press.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a sole,

The present invention relates to a method for manufacturing a non-slip sole containing latex, and more particularly, to a method for manufacturing a non-slip sole comprising a latex comprising a natural latex as a main ingredient and an auxiliary dough containing sulfur, The primary latex contained in the main material of the sole is formed by extruding 15 to 18 wt% of the primary latex contained in the main material of the sole of the shoe sole, When the dough is extruded into a sheet form, the dough of the sole is not strongly adhered to the surface of the roller, so that it does not interfere with the productivity, and the auxiliary dough containing sulfur is mixed with the main material for forming the sole of the foot sole After that, they are mixed with the main material of the sole of the sole and mixed in the form of dough, Vulcanization is not performed in the process, so that a uniform vulcanization can be generated on a rubber sheet to be manufactured later, and the rubber sheet extruded through the roller machine is impregnated with zinc water and dried, so that even if the rubber sheets are piled up, So that it is possible to improve the productivity of the sole of the shoe sole.

The conventional anti-slip sole and its manufacturing method are known as Patent Application No. 10-2008-0035402. However, this is similar to a comprehensive object of providing a sole that prevents slippage, There is no need to compare each other because it is a separate invention with no similarities in purpose.

However, since the general purpose of providing a sole for preventing slippage is similar, the manufacturing method of the conventional invention will be described.

The present invention relates to a non-slip mixture comprising 100 parts by weight of a non-slip mixture containing urethane resin, 50 parts by weight of a curing agent, and 2 to 3 parts by weight of a dye, Attaching a tape to the shoe sole; Removing a portion of the tape; Bringing the sole of the shoe sole into the pedestal of the mold, and injecting the non-slip mixture into the portion where the tape is removed; Naturally drying the charged non-slip mixture for 10-15 minutes; Spraying a mold release agent on the uneven mold plate, covering the molded plate on the sole to which the non-slip mixture is applied, and covering the pressure plate thereon; A step of press-molding in a mold for 2 to 2 hours and 30 minutes to form concavities and convexities; And finally removing the tape.

Further, the method may further include forming a circular groove at a portion where the tape is partially removed, wherein the pedestal maintains a temperature of 40-50 degrees Celsius during molding, And a non-slip mixture is formed on the bottom surface of the shoe sole by forming a groove on the bottom of the shoe so as to cover the groove and the periphery of the groove.

The urethane resin, which is included in the conventional invention and contains the largest amount of the non-slip mixture to prevent slippage, is one of synthetic rubbers having a urethane bond. It has good abrasion resistance, oxidation resistance and oil resistance but is poor in heat resistance and weak in hydrolysis by acid, alkali and water vapor. Used in shoes, tires, and belts.

As shown in the above description, since the urethane resin is not a material having a property to prevent slipping, it is not suitable as a material for producing a non-slip sole, and a non-slip window having a concave- It is a problem that can not provide non-slip sole.

Meanwhile, the present invention has been developed to produce a shoe sole using latex as a main material so that excellent viscosity of the latex is an element for preventing slippage. However, the process of finding the ingredient and content of the latex, I have experienced many difficulties and trial and error in finding out the composition ratio of other ingredients.

That is, when the content of the latex is large, when the sole forming material including latex is extruded by a roller machine in order to extrude it into a (rubber) sheet of a predetermined thickness, the sole forming material is not separated from the roller A problem that the sheet could not be manufactured occurred.

In order to manufacture the anti-slip sole, the vulcanization is carried out by including sulfur in the sole forming material including latex, and the mixture ratio of the other ingredients is optimally adjusted to maintain the viscosity of the primary latex rubber, Uniform vulcanization should be performed on the whole, but if the amount of sulfur and the amount of sulfur to be added and the blending ratio of the ingredients are not appropriate, there is a problem that uniform vulcanization does not occur and defective products are produced.

Patent Application No. 10-2008-0035402 (Title: Anti-slip sole and method for manufacturing the same)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a method for producing a sole- The auxiliary dough including sulfur is mixed and kneaded with the main material of the sole so that the main material for forming the sole is mixed with the main material of the sole so that the vulcanization So that uniform vulcanization can occur in the rubber sheet to be produced at a later time.

In addition, the rubber sheet extruded through the roller machine is impregnated with zinc water (water zinc) to prevent the rubber sheets from sticking to each other when they are stacked or laminated, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method for preventing a sticking phenomenon in a cutting process.

According to an aspect of the present invention, there is provided a method for manufacturing a sole molding material, comprising the steps of preparing a primary latex, mixing a sole forming main material including a primary latex formed in a primary latex forming preparing step, A step of kneading a main material mixed in a step of kneading the main material mixed in the step and a auxiliary kneading step of forming an auxiliary kneaded mixture of sulfur and synthetic rubber separately from the main material kneading step, A zinc sheet impregnating step of impregnating and removing the rubber sheet formed in the rubber sheet forming step into a zinc sheet, a drying step of drying the zinc sheet coated with the zinc sheet, A cutting step of cutting the rubber sheet having been subjected to the drying step to fit the shape of a shoe sole to be manufactured, And a sole forming step of forming the rubber sheet cut out from the molded heat press.

As described above, the method of manufacturing the anti-slip sole according to the present invention is characterized in that when the dough of the sole is extruded into a sheet form in the roller machine by making the primary latex included in the dough of the sole forming main material to be 15 to 18% In the production of the rubber sheet for preventing the slip, the dough does not stick strongly on the surface of the roller, and the productivity is not hindered. The auxiliary dough including the sulfur and the sole of the sole are molded, In the process of mixing the molding material with the molding material in the form of dough, the optimum vulcanization is carried out in the process of mixing the molding material of the sole, so that uniform vulcanization is generated in the rubber sheet to be manufactured later, and the excellent viscosity is uniformly formed, It is effective.

In addition, the rubber sheet extruded through the roller machine is impregnated with zinc water and then dried. Thereafter, the rubber sheets do not stick to each other even if they are stacked or laminated, In addition, it is possible to prevent the phenomenon of sticking to each other even when cutting the rubber sheet in a predetermined shape, thereby improving the productivity. In addition, since a plurality of rubber sheets can be stacked and stored, will be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram showing a method for manufacturing a non-slip sole incorporating a latex according to the present invention. FIG.

Hereinafter, a method of manufacturing a non-slip sole according to the present invention will be described with reference to FIG.

As shown in FIG. 1, the method for manufacturing the anti-slip sole according to the present invention comprises the steps of preparing a primary latex (1) and a primary latex formed in the preparation of a primary latex (1) In addition to the main material kneading step (3) and the main material kneading step (3), in addition to the main material kneading the main material mixed in the sole forming molding material main material mixing step (2), the sole forming molding main material mixing step (2) A rubber sheet forming step 5 for extruding the main material dough and the auxiliary dough in the form of a sheet while mixing evenly, and a rubber sheet forming step 5 for forming an auxiliary dough, A zinc water impregnation step (6) for impregnating and taking out a rubber sheet into zinc water, a drying step (7) for drying the rubber sheet coated with zinc water, and a drying step (7) God And cutting step (8) for cutting to fit the window shape, to produce a non-slip shoe sole including the shoe sole molding step of molding in a hot press molding a rubber sheet cut in the cutting step (8) (9).

The step (1) for preparing the primary latex comprises a step of mixing the liquid latex and the material to be used for making medical gloves, etc., a step of desulfurizing the mixed mixture in one step, Three steps of heating the coarse mixture to a temperature of 190 to 210 ° C, and four steps of naturally drying the latex mass which has been subjected to the three steps for 1 to 2 days to form a solid primary latex.

In place of the natural latex contained in the above step 1, a known reclaimed latex for rework such as medical gloves or the medical gloves that are disposed of after being used can be recycled or substituted for synthetic latex .

The mixing ratio of the natural latex and the sub ingredient in the above step is as follows.

a) 92.16% by weight of liquid natural latex (Latex)

b) 1.4% by weight of sulfur (S) serving as a vulcanizing agent,

c) 0.92% by weight of one drug selected from among EZ, MZ, TT and BZ serving as a vulcanization accelerator,

d) 0.92% by weight of Oleic acid Potassium as a softening agent,

e) 0.92% by weight of ammonia casein as a coagulating agent,

f) 0.92% by weight of ZnO (transparent zincification) serving as a vulcanization aid,

g) 0.92% by weight of an antioxidant to prevent discoloration and change (aging) of the molded rubber window,

h) Stabilizer to prevent the scorching phenomenon of rubber stiffness 0.9 weight 2%,

i) 0.92% by weight of NaOH (sodium hydroxide) as a stabilizer.

The primary latex prepared in the primary latex forming preparation step (1) has a high viscosity and is in a very sticky state. In order to lower the viscosity of the primary latex, a material having a low viscosity and an invisible material (Hereinafter referred to as " material of the present invention " and referred to as the material of b) to i) above is mixed with the sole molding material main material mixing step (2) after the step (1) of preparing the primary latex.

In this step (2), a mixture of a solid primary latex and several non-viscous materials is mixed with a mixture of a primary latex and a plurality of non-viscous materials, which is referred to as a sole molding main material. The mixing ratio is as follows.

The composition of the present invention includes 15 to 18% by weight of primary latex, 10 to 12.5% by weight of natural rubber, 26 to 32% by weight of synthetic rubber, 5 to 6.2% by weight of ZnO (transparent zincification), 0.5 to 0.6% by weight of stearic acid, Mercapto benzo thiazol, 0.65 to 0.8% by weight of dibenzo thiazole disulfide, 0.04 to 0.053% by weight of tetramethylthiuram mono sulfide, 2.3 to 2.84% by weight of poly ethylene glycol, 5 to 6.2% by weight of process oil and 23.2 to 28.3% by weight of white carbon (filler), which are included in the rubber sheet forming step 5 2 to 2.5% by weight of an auxiliary dough mixture containing sulfur and synthetic rubber constituting the auxiliary dough is further mixed.

The solid primary latex has a role of preventing the tearing by strongly preventing the slip of the molded rubber vulcanizate which is solidified by lump and solidifying, and at the same time, it plays a role of chewing the rubber.

It is preferable that 15 to 18% by weight of the primary latex is contained in the dough of the sole of the sole of the shoes so that the mixing ratio of the main material and the sub-material is the most optimum in the product to be obtained by the present invention, When mixing the main material dough with the auxiliary dough, the dough sheet, which is adhered with a proper viscosity at the smooth surface of the roller machine when the roller machine is compressed, can be peeled off from the roller surface I have found a range to be.

When 19 wt% of the primary latex is included, productivity is deteriorated because the operator must strongly pull the sheet when the dough sheet is peeled off from the surface of the roller, and when 14 wt% of the primary latex is included, the viscosity is weak It is not possible to obtain an optimum product to be obtained from the present invention. Therefore, it is revealed that 15 to 18 wt% of the primary latex is included when the main material for forming the sole is mixed.

The mixing ratio of the non-viscous materials except for the primary latex in the sole forming main material mixture is determined in the above ratio in the same manner as in the case where the non-viscous material is combined with the primary latex while the viscosity of the primary latex is lowered, (Butyl rubber), cumarone indene resin (Cumarone Inden Resin) is added, or the proportion of each of the viscous materials is varied It does not have a great influence on the formation of a rubber sheet for shoe sole making, but it is revealed that the above compounding ratio describes the most optimal compounding ratio obtained by the applicant of the present invention.

And. The natural rubber is a solid body which is compressed and solidified in a lump and plays a role of preventing slippage of a shoe rubber window, and also in the case of a synthetic rubber, it is a solid body which is compressed and solidified in a lump, and serves to enable rubber window molding (vulcanization).

In addition, ZnO (transparent zincification) is a powdered medicine and serves as a promoting agent to enable rubber window forming (vulcanization). Stearic acid is a powdered medicine and acts as a promoter to enable rubber window forming (vulcanization) It helps to make good.

Mercapto benzo thiazol is a powdered drug and acts as a promoter to enable rubber molds (vulcanization), while Dibenzo thiazol disulfide is a powdered medicine, It acts as an accelerator to enable molding (vulcanization).

Tetra methyl thiuram monosulfide is also a powdered drug and acts as an accelerator to enable vulcanization (vulcanization), while polyethylene glycol (glycol) It is applied when it enters and softens hardness of molding (vulcanized) rubber window.

The process oil may be represented by P-oil, softening agent, softening softness of a rubberized vulcanized rubber, and white carbon (filler) It hardens hardness.

After the primary latex and several non-viscous materials are mixed in the main sole molding material mixing step (2), the main material kneading step (3) is performed. In the main material mixing step (2) of the sole- (The most effective productivity can be obtained at a temperature of 80 to 90 ° C.). When the temperature is lower than the proper temperature, the time required for kneading takes a long time. If the temperature is high, a scorch phenomenon occurs in which the rubber becomes stiff. The optimum product to be obtained can not be formed).

After 8 to 10 minutes (it is possible to produce the most effective productivity, if the kneading is carried out earlier than the proper time, the mixture is not properly made, and if it is too long, the rubber becomes loose and the desired properties are not obtained, ). When the kneaded mixture is kneaded, the material for forming the sole is formed into a dough such as a flour dough. Such a dough is called a main material dough.

The main material dough mixed and kneaded is excellent in slippery function because it contains 15 to 18% by weight of the first latex and the other is a mixture of non-viscous materials, and is an optimal product to be obtained in the present invention.

The auxiliary dough preparation step (4) is performed separately from the main dough step (3), and the auxiliary dough preparation step (4) is performed separately from the main dough step (3) Which is prepared by mixing synthetic rubber and sulfur (S) in a ratio of 1: 1, and then mixing (kneading) the mixture in a kneader to form an auxiliary dough.

In the rubber sheet forming step 5, a main material dough and an auxiliary dough separately formed in the main material dough step 3 and the auxiliary dough preparation step 4 are applied to the roller machine. In the rubber sheet forming step 5, 88.052 to 107.943% 2.5 wt.% Of the dough is mixed, so that a large amount of the main material dough and a small amount of the auxiliary material dough are completely uniformly mixed. When the two doughs are put together by the roller machine and are compressed downwardly, Is repeatedly pressed for about 13 to 15 minutes, the two doughs are homogeneously mixed (kneaded) and the rubber sheet is extruded.

When the two doughs are put into a roller machine, the two doughs are combined and discharged in a sheet form. Repeatedly feeding the dough pieces to the roller machine and then discharging them downward takes an average of 4 seconds, A large amount of main material dough and a small amount of auxiliary material dough are mixed and kneaded evenly.

The vulcanization phenomenon occurs when the primary latex contained in the main material dough mixed with the kneaded material and the sulfur contained in the auxiliary material dough are combined with each other, and the rubber sheet finally coming out through the roller machine in the rubber sheet forming step (5) The elasticity is generated and the elasticity is improved and the wear of the rubber is improved.

The vulcanization phenomenon in the upper part is to mix sulfur with raw rubber, so that the remaining heat when kneading in a kneader heated at 80 to 90 ° C in the auxiliary dough preparation step (4) and the friction with the roller in the rubber sheet forming step (5) The kneading of the main material and the auxiliary dough are vulcanized by the heat, so that the elasticity, the heat resistance and the extensibility are increased and a high quality rubber sheet having a viscosity is produced.

In this rubber sheet formed in the rubber sheet forming step 5, the entire outer surface is sticky. When the rubber sheet in this state is overlapped or laminated for the next operation, not only the rubber sheet sticks to each other, A zinc water impregnation step (6) is carried out to prevent the rubber sheets from sticking to each other because the second work is difficult to carry out after the second work.

In this zinc water impregnation step (6), when zinc powder is poured into a water tank in a water tank and water is poured, the yellow loose powder is put into a water tank and zinc powder is contained in the water just like water is poured . When the rubber sheet formed in the rubber sheet forming step (5) is put into the water tank containing the zinc water and then the rubber sheet is taken out, the zinc sheet is evenly coated on the entire outer surface of the rubber sheet.

The rubber sheet thus taken out is subjected to a drying step (7) in which the rubber sheet is naturally dried while hanging on a hanger, or when the wind is blown through a fan, the water is evaporated and only the zinc powder is adhered to the outer surface of the rubber sheet.

Then, the rubber sheet after the drying step (7) is laminated or rolled up, and when the dough is made by the dough, the dough does not stick to each other when the dried flour is put on the dough, The overlapping rubber sheet is prevented from sticking, and a cutting step (8) is performed in which the rubber sheet having been subjected to the drying step (7) is cut in the shape of a shoe sole.

Next, a sole window molding step (9) for forming a sole is performed by pressing the sole of semi-finished shoe sole cut in the cutting step (8) into a heat press in the shape of the sole to be manufactured Thereby completing the production of the anti-slip sole containing the latex.

When the semi-finished product of the sole is formed by hot pressing in the hot press forming step (9), the zinc powder on the outer surface of the rubber sheet is melted by heat and disappears, and the sole produced by this manufacturing method is excellent When you walk on a slippery road surface or steel plate, smooth marble, ice, snow, and granite, which occupy about 80% of the Korean mountains, depending on the viscosity, the viscosity of the primary latex contained in the sole To prevent slippage.

1: Preparation of primary latex formation Step 2: Formation of sole forming material mixing step
3: Main material dough Step 4: Auxiliary dough preparation step
5: Rubber sheet formation Step 6: Zinc water impregnation step
7: drying step 8: cutting step
9: Shoehorn molding step

Claims (2)

A step of mixing the liquid natural latex and the sub ingredient, and a step of desulfurizing the mixed mixture in one step, a step of heating the mixture to a temperature of 190 to 210 ° C, A first latex forming preparation step comprising four steps of naturally drying a coarse latex mass for 1 to 2 days to form a solid primary latex;
The composition of the present invention includes 15 to 18% by weight of primary latex, 10 to 12.5% by weight of natural rubber, 26 to 32% by weight of synthetic rubber, 5 to 6.2% by weight of ZnO (transparent zincification), 0.5 to 0.6% by weight of stearic acid, Mercapto benzo thiazol, 0.65 to 0.8% by weight of dibenzo thiazole disulfide, 0.04 to 0.053% by weight of tetramethylthiuram mono sulfide, A process for mixing a sole molding material containing 2.3 to 2.84 wt% of poly ethylene glycol, 5 to 6.2 wt% of process oil, and 23.2 to 28.3 wt% of white carbon (filler);
A main material kneading step of kneading the main material mixed in the main material molding step of the sole of the foot so that the main material is mixed in a kneader maintaining a temperature of 80 to 90 캜 and then mixed for 8 to 10 minutes;
An auxiliary dough preparation step in which synthetic rubber and sulfur are mixed at a ratio of 1: 1 and then mixed (kneaded) in a kneader to separately prepare an auxiliary dough;
The main material dough (88.052 ~ 107.943 wt%) and the auxiliary dough (2 ~ 2.5 wt%) formed separately in the main material dough step and the auxiliary dough preparation step were put into a roller machine and extruded for 13 ~ 15 minutes repeatedly. A rubber sheet forming step for uniformly mixing (kneading) the rubber sheet so as to be extruded;
A zinc water impregnation step of impregnating and removing the rubber sheet formed in the rubber sheet forming step with zinc water;
A drying step of drying the rubber sheet coated with zinc water;
A cutting step of cutting the rubber sheet having passed through the drying step to fit the shape of a shoe sole to be manufactured;
And molding a rubber sheet cut in a cutting step in a molding hot press. 2. The method according to claim 1, wherein the primary latex to be mixed in one step of the primary latex-
a) 92.16% by weight of liquid natural latex (Latex)
b) 1.4% by weight of sulfur (S) serving as a vulcanizing agent,
c) 0.92% by weight of one drug selected from among EZ, MZ, TT and BZ serving as a vulcanization accelerator,
d) 0.92% by weight of Oleic acid Potassium as a softening agent,
e) 0.92% by weight of ammonia casein as a coagulating agent,
f) 0.92% by weight of ZnO (transparent zincification) serving as a vulcanization aid,
g) 0.92% by weight of an antioxidant to prevent discoloration and change (aging) of the molded rubber window,
h) 0.92% by weight of a stabilizer which serves to prevent the scorch phenomenon of rubber stiffness,
(i) NaOH (sodium hydroxide) serving as a stabilizer in an amount of 0.92% by weight, based on the total weight of the shoe sole.

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