JP2000050908A - Production of sole for sporting shoes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the production process, to reduce a production time, a equipment, labor power and a cost, to lessen pollution and to enhance the quality and function of products in the process for producing soles which integrally molds EVA insoles and unvulcanized rubber soles by ameliorating the defect of the process for producing two kinds of the soles in the conventional method for bonding the EVA insoles to the rubber soles or integrally molding the EVA insoles and the rubber soles. SOLUTION: Steps of material blending, mixing, taking out, blowing, peeling, stripping, diagonal molding, cutting, edge grinding, front sawing, milling, reverse barrel trimming and brushing are progressed in the process for producing the EVA semi- manufactured and the working process. The material of the rubber soles is subjected to blending, mixing and cutting in the production process of the rubber sole material. Chemical water is applied to the bonding parts of the EVA semi-manufactured goods and the rubber soles and the rubber soles are placed into sole molds. The EVA semi- manufactured goods are mounted at the middle flasks of the molds and are heated therefrom and are refrigerated, by which the finished goods of the soles are obtd in the process for integrally molding the EVA semi-manufactured goods and the unruly carrized rubber sole material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for manufacturing a sole for an athletic shoe, and more particularly, to a method for manufacturing a sole for an athletic shoe by integrally molding EVA unvulcanized rubber.

[0002]

2. Description of the Related Art As the competition in the market becomes more and more intense, the technology of shoe business is changing rapidly, and the demand for the quality of athletic shoes is becoming more and more strict and consumers have better performance. Is required, and the conventional E
VA insole bonded to rubber sole and EV
The A vulcanized rubber bottom can no longer satisfy such requirements.

[0003] In the prior art, a method of manufacturing a sole for an athletic shoe to be adhered to a rubber sole on an EVA insole comprises the following processes. 1. EVA semi-finished product manufacturing, processing, molding and insole completion process. In the process, the production of the EVA semi-finished product is performed in the following steps. Material preparation, mixing, blending, removal of material pieces, cutting, quenching, peeling, stripping, diagonal molding, cutting, inspection, and packaging with predetermined distribution. The processing, molding and insole product completion of the EVA semi-finished product are performed in the following steps. Preparation of materials,
Edge polishing, front sawing, body trimming, brushing, inspection, packaging, feeding, molding, shoe removal, shoe cleaning, edge trimming, side trimming, cleaning, inspection, packaging. 2. Rubber sole manufacturing, molding and rubber sole completion process. The process is performed in the following steps. Preparation of materials, blending, addition of chemicals and pigments, removal of material pieces, cooling, cutting, molding, deburring, cleaning, application of co-treatment agents, repainting, inspection, and packaging. 3. The process of bonding the rubber sole to the EVA insole.
The process is performed in the following steps. To roughen the adhesive surface of rubber sole, apply treatment agent to rubber sole, apply adhesive to rubber sole, apply treatment agent to EVA insole, EV
Applying adhesive to A insole, bonding rubber sole and EVA insole, pressurizing and packaging.

[0004] The above-mentioned method of manufacturing a sole by bonding an EVA insole to a rubber sole has the following disadvantages. 1. The manufacturing process was lengthy and complicated, and the number of processing processes was too large. 2. Manufacturing time was too long, production efficiency was low, a lot of equipment was required, and space was taken up. 3. It was difficult to maintain a normal production situation in a situation where labor was required and labor was insufficient even if wages were raised. 4. The quality was not good, peeling and displacement occurred frequently, and the material was too heavy.

[0005] In addition, there is a method of forming a sole by combining an EVA insole with a rubber sole by integral molding, which is constituted by the following process. 1. EVA semi-finished product manufacturing and processing process. The process proceeds with the following steps. Preparing materials with predetermined distribution,
Blending, mixing, material removal, cutting, quenching, peeling, stripping, diagonal molding, cutting, inspection, packaging, material preparation, edge polishing, front sawing, body molding, brushing, inspection, packaging. 2. Manufacturing and molding of rubber sole material and rubber sole completion process. The process is performed in the following steps. Material preparation, blending, chemicals, pigment addition, material removal, cooling, cutting, molding, cleaning, surface roughening, treatment agent application, adhesive application with a predetermined distribution. 3. Process of combining rubber sole with EVA semi-finished product by integral molding. The process proceeds with the following steps. Material preparation, rubber sole fixing, EVA semi-finished product fixing, molding. 4. Sole completion and packaging process. The process proceeds with the following steps. Shoe cleaning, trimming, sharing, scrubbing, co-treatment agent application, repainting, inspection, packaging.

The method of forming a sole by combining a rubber sole with an EVA insole by integral molding has the following disadvantages. 1. Although the manufacturing process is superior to the one in which a rubber sole is attached to the M / D main body, there are many processing procedures. 2. It takes a long time to manufacture, requires a lot of capital investment, and takes up space for installing the equipment. 3. The production process required a lot of labor. 4. Since the rubber sole was sulfurized twice, the quality became unstable, the pollution increased, and the material was too heavy.

[0007] The above-mentioned "sulfurizing the rubber sole twice" means that after the rubber sole material is manufactured, it is heated and pressed by a rubber sole mold alone, and then heated and pressed again when the EVA semi-finished product and the rubber sole are integrally formed. 2 rubber soles
Refers to re-sulfurization. The causes of pollution caused by the twice-sulfurized rubber sole are caused by excessive burrs, residues and wastes generated during the process. In addition, polishing ash is generated in the course of roughening the surface of the rubber sole, and secondary sulphide is also generated. The resulting property changes cause environmental pollution.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a kind of method for manufacturing soles of athletic shoes. The method of the present invention is a method of bonding a conventional EVA insole to a rubber sole or an EVA insole and a rubber sole. A method for integrally molding a sole, a method for producing a sole by integrally molding an EVA insole and an unsulfurized rubber sole, which can simplify the production process, A method that can reduce labor, cost, reduce pollution, and enhance product quality and function.

[0009]

According to the first aspect of the present invention, there is provided an electric vehicle.
A method of manufacturing a sole for an athletic shoe that includes the processes of manufacturing and processing the semi-finished A insole product 12 ′, manufacturing the unsulfurized rubber sole material, and integrally forming the semi-finished EVA insole product 12 ′ and the unsulfurized rubber sole material in the same mold. The process for producing the unsulfurized rubber sole material is described in A. Blending, kneading, B. Add chemicals, pigments, knead, take out,
C. Cooling; Including each step of cutting,
In the blending and kneading steps, the blender is started, and the rubber sole raw materials, polybutadiene rubber, polyisoprene rubber and brediene acrylonitrile rubber, are charged into the blender, and a processing aid is added to about 130 to
After about 20 to 25 seconds, the silica and the coupling agent were charged and kneaded for 60 to 80 seconds.
~ 25 seconds later, further zinc oxide, silica, stearic acid,
Add Montacre, wax, carbowax (Carbowax), procling oil and add 16
Knead for 0 to 180 seconds, keep the temperature at 120 ± 5 ° C,
In the step of adding chemicals, pigments, and kneading in the above B, the rubber sole basic material that has been blended in the step A is put in a tumbler to be rolled and softened, and further, a predetermined amount of pigment is added, and the pigment is mixed well. Then, the chemicals, namely, sulfur, thiofide (Thiofid)
e), Thiotax and Mono-thiurad were added, and the mixture was rolled repeatedly with a tumbler to uniformly knead the material. After sufficiently kneading, the material was taken out. Is cooled by a refrigerator so that the materials do not stick to each other, and in the cutting step of D, the rubber sole material is cut as necessary at the time of manufacture and is made ready for use in a subsequent process. Characterized by having
It is a method of manufacturing soles for athletic shoes.

According to a second aspect of the present invention, the process of integrally molding the semi-finished EVA insole product 12 'and the unsulfurized rubber sole material in the same mold includes the following steps A to D: A semi-finished EVA insole product 12 'and an unsulfurized rubber sole material 11' are prepared, and a chemical water is applied to a bonding portion of the two with a brush, and the chemical water uses toluene and a detergent. Drying for 60 minutes B. Put unsulfurized rubber sole material into sole mold 3,
B. Place the diaphragm 4 on the sole mold 3, remove the diaphragm 4 by cooling, cut off the protruding portion of the rubber sole material 11 ′, and form the rubber sole material 11 ′ into a predetermined outer shape. EVA insole semi-finished product 12 'is molded into the middle frame 2
Step D. The EVA insole semi-finished product 12 'in the mold and the unsulfurized rubber sole material are combined by heating, pressurizing and freezing to form a finished sole, and the pressurizing pressure is 60 ± 10 kg / m.
The heating temperature is about 155 to 165 ° C, and the heating time is 9 to 10
The method for manufacturing a sole for athletic shoes according to claim 1, characterized in that the method includes the steps of setting the freezing time to 18 to 20 minutes.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The sole manufacturing method of athletic shoes according to the present invention includes the following processes. 1. EVA semi-finished product manufacturing and processing process. The process involves blending, mixing, discharging, blowing, peeling, and stripping of materials prepared in a predetermined distribution.
ing), diagonal shaping
g), cutting, edge polishing, front sawing (fr
nt sawing), milling,
Reverse body trimming (reverse waste tri)
mming) and brushing steps are sequentially performed. 2. Rubber sole material manufacturing process. In this process, materials prepared in a predetermined distribution are blended, mixed and cut. 3. Process of integrally molding EVA semi-finished product and unsulfurized rubber sole material. In this process, chemical water is applied to the part where the EVA semi-finished product and rubber sole are bonded, the rubber sole is placed in the sole mold, the EVA semi-finished product is mounted on the middle frame of the mold, and then heated and frozen to obtain a finished sole product. .

The method for producing soles for athletic shoes according to the present invention is simpler than conventional methods, and the production time, equipment, labor,
It can save manufacturing costs and improve product quality and performance.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Steps from E to E: EVA insole semi-finished product manufacturing B. EVA insole semi-finished product processing C. Rubber sole material production E. Integrate semi-finished EVA insole in the same mold. Completion and packaging of the finished sole. Inclusive of the above.

The above steps will be described in more detail below. A. EVA insole semi-finished product manufacturing (including EVA pigment)
Steps (see FIG. 1) Preparing materials by predetermined distribution Raw materials for EVA insole semi-finished products (Raw Materi)
al), fillers, foaming agents, chemicals (Chemica)
l), a cross-linking agent (Crossing Linking),
Pigments or other materials are accurately weighed and prepared using an electronic balance according to a predetermined compounding ratio. Among them, the raw material is Ewax (4
60,462), Murel (0903), rubber plastic (E-352) Foaming agent is Callcom (JTR-M) Chemicals are zinc oxide, stearic acid, zinc stearate,
Ti-Pure (R-103), rubber plastic polymer (R-130) Cross-linking agent: dicumyl peroxide (DCP) Pigment: ultramarine (5505), pink (1620), brightener (KCB) . The above material distribution is shown in Table 1 below.
As shown in FIG.

[Table 1] During the material distribution of the semi-finished EVA insole in Table 1, the added chemicals (zinc oxide, stearic acid, zinc stearate, T
The function of i-Pure (rubber plastic polymer) is as follows. Zinc oxide causes heat conduction. Stearic acid facilitates handling of the material and facilitates removal of the mold. Zinc stearate maintains thermal stability.
Ti-Pure makes the pigment uniform. Rubber plastic polymers have a dispersing and modifying action. 2. Material Blending Material input temperature 80 ± 5 ° C, take-out temperature 95-10
The temperature was set to 0 ° C., the time was set to 8 to 12 minutes, and the prepared plastic particles (Ewax, Mure) were prepared according to a predetermined distribution.
l, rubber plastic), chemicals (zinc oxide, stearic acid, zinc stearate, Ti-Pure, rubber plastic polymer), pigments (ultra blue (5505), pink (16)
20), a brightener (KCB)) is charged into a kneader for stirring and kneading, and waits for the temperature to drop to 76 ± 2 ° C .; then, mixes for 4 minutes, and pressurizes when the temperature rises to 82 ± 2 ° C. The lid was once removed, and after 2 minutes at a temperature of about 96 ° C., a crosslinking agent (dicumyl peroxide) and a blowing agent (Callco
m), mix at about 100 degrees for about 10 minutes, and add about 10
Remove the mixed material at 8 ° C. 3. Kneading, taking out, and cutting The well-mixed materials are kneaded by a kneader in a tumbler (temperature setting is 60 to 65 ° C.), taken out, and after cooling, cut into small pieces based on the setting. 4. Hardening: The pressure of the hydraulic machine is set to 190 ± 20 kg / cm, the hydraulic pressure is set to 160 to 165 ° C., each piece is weighed in a mold under the principle that each 1 mm is 0.63 kg, and each material is 1 mm. The quenching proceeds under the principle of quenching for 1.6 minutes. The quenched EVA material is quickly taken out of the hydraulic machine, placed on a radiator rack and cooled. 5. Peeling, stripping, oblique forming, cutting The quenched and cooled EVA material is peeled by a peeling machine to the thickness required for a semi-finished EVA insole, and cut into strips by a cutting machine based on the length of the shoes. The semi-finished EVA insole and the semi-finished EVA insole color piece are cut according to each size and number.

B. Semi-finished EVA insole processing (see Fig. 2) Material collection EVA insole semi-finished product and EV completed in step A
Take A-color piece. 2. Edge polishing, front sawing, milling (mi
lling, reverse trunk trimming (reverse wa)
ist trimming) The semi-finished EVA insole is processed in the order of edge polishing, front sawing, milling, and reverse body trimming according to the standard setting. 3. Use a brushing brush to remove stains and stains on the semi-finished EVA insole.

C. Production of rubber sole material (see Fig. 3) Preparing materials with predetermined distribution Raw materials for rubber sole material production, processing aids, silica, chemicals, proclosing oil
l) Prepare the pigment according to a predetermined distribution. The distribution of each material is as shown in Table 2 below.

[Table 2] The operation and effect of each material of the rubber sole are as follows.
Silica is used as a reinforcing agent and is incorporated into rubber to improve physical properties. Procrucing oils have a softening and synthetic effect. Dispersants aid in dispersing the rubber material. Sulfur is added to the rubber material and combines to form an elastic body. Thiophide, Thiotax, Monothiurad (Mono-th)
Iurad) is an accelerator, which promotes the chemical action of ions and rubber material to form an elastic body in a short time. 2. Blending, kneading The pressure of the inlet valve of a blender (HP, Ban Barry) was set to 6.5 ± 0.5 kg / cm, and first, polybutadiene rubber (BR-1220) and polyisoprene rubber (I
R-10), butadiene acrylonitrile rubber (NB
R-32) into a blender, and furthermore, a processing aid (D
ispergator), masticate for about 140 seconds,
After 20 seconds, silica (1/4 VN-3) and a coupling agent (Si-69) were charged and kneaded for 70 seconds.
After 0 seconds, further zinc oxide, silica (3/4 VN-3),
Stearic acid, Montacre
(Sp-P), wax (1956), Car Bow
ax (Carbowax) (PEG-3350) and a procling oil are added, and the mixture is kneaded for 160 to 180 seconds, and the temperature is set to 120 ± 5.
Keep at ° C. 3. Add chemicals and pigments and knead Put the rubber sole basic material after blending described above into a tumbler to roll and soften, add a predetermined amount of pigment, and when the pigment is mixed about 80%, further chemicals, Sulfur (S), Thiofide (DM),
Thiothax (M), Mono-thiurad
(TS) is added and the material is kneaded uniformly by rolling repeatedly, and after sufficiently kneading, the material is taken out according to standard settings. 4. Cooling The material after removal is cooled in a refrigerator (a predetermined amount of zinc stearate is put in water in a freezer so that the rubber sole material does not stick when piled up), and then collected in a basket. . 5. Cutting If necessary at the time of manufacture, the rubber sole material is cut by a setting machine and a cutting machine according to settings, and waits for use (the material after cutting is allowed to wait for use within 48 hours).

D. EVA insole semi-finished product and rubber sole are integrally molded with the same mold (see FIGS. 4, 5, 6, and 7). Material preparation, application of chemical water with a brush EVA insole semi-finished product 12 ', rubber sole material 11',
And EVA color pieces (not shown) are prepared, and EVA
A chemical water is applied to a bonding portion of the semi-finished insole product 12 ′ and the rubber sole material 11 ′ with a brush, and the chemical water uses toluene and a detergent, and the toluene cleans zinc stearate on a bonding surface of the rubber sole material 11 ′. Used for detergent, EV
It is used to wash the bonded surface of the semi-finished A insole product 12 '. Semi-finished EVA insole 1 washed with chemical water
Leave 2 'and rubber sole material 11' at room temperature,
Let dry for minutes. 2. Mark the material with a pigment and place the rubber material in the mold. Open the top cover 1 and the middle frame 2 of the mold and set the mold temperature to 45.
C. or less, the EVA color piece was placed at a position corresponding to the trademark position of the convex portion 3 ′ on the sole mold 3, and the cut rubber sole material 11 ′ was placed at a position corresponding to the convex portion 3 ′.
After placing the rubber sole material 11 ′, the partition plate 4 is placed on the sole mold 3. The partition plate 4 has a concave portion 4 ′ having a shape complementary to the convex portion 3 ′ of the sole mold 3. The rubber sole material 11 ′ protruding from the convex portion 3 ′ of the sole mold 3 is cut off and dropped, and the flat and uneven portion of the rubber sole material 11 ′ is held,
Be careful not to cause protrusion or misalignment. 3. Put EVA insole semi-finished product EVA insole semi-finished product 12 'is put in middle frame 2. The inner frame 2 has a hollow portion 2 'in which the semi-finished EVA insole product 12' is placed. When inserting the semi-finished EVA insole product 12 ′, the middle frame 2 is joined above the sole mold 3,
The inner frame 2 and the sole mold 3 are completely adhered to each other, and the depth of the EVA insole semi-finished product 12 'is
1 ′ is provided so as not to be pressed, and attention should be paid to the front and rear positions so that no dirt adheres to the contact surface between the semi-finished EVA insole product 12 ′ and the rubber sole material 11 ′, and that the dry state can be maintained at all times. I do. The upper lid 1 of the mold is joined above the middle frame 2. The upper lid 1 has a projection 1 ′ that can press the semi-finished EVA insole 12 ′ in the inner lid 2. Hydraulic machine pressure is 60 ± 10kg / m, heating temperature is 1
The heating time is set at 9 to 10 minutes, and the freezing time is set at 18 to 20 minutes. 4. Molding and removal After heating, freezing and molding the semi-finished EVA insole and rubber sole material, first open the upper lid 1, lift the inner frame 2 and push up the front end of the finished product by hand to complete the sole finished product 1.
Take out 0. The completed sole is as shown in FIG. The finished sole product 10 has a rubber bottom layer 11 and an EVA insole layer 12 around which an insole side wall 13 is formed.
It is said. The shape of the upper lid 1, the middle frame 2, the sole mold 3, and the partition plate 4 used in the process of integrally molding the semi-finished EVA insole and the rubber sole in the same mold is a mold drawn by the present invention due to a difference in design between the sole and the insole. The shape is an indication.

E. Finishing and packaging of finished sole 10 (see FIG. 9) Shoe washing, trimming, edge cutting, scrubbing Wash the finished sole with a washing machine to remove oil stains, cut off the burrs from the EVA sole with a trimming machine, and remove the fluff and pores of the rubber sole with a cutter or an electric cutter. Then, the EVA insole body and the rubber sole are scrubbed with a detergent. 2. Second treatment agent application, repainting
Ting) A treatment agent is first applied to the corresponding portion of the rubber sole that requires repainting with a brush, and then a running water box (temperature: 50 ° C.)
-55 ° C, 20-40 minutes) and repainted. Paint the rubber bottom with paint of various colors
Bake at 0-65 ° C for 30-50 minutes. 3. Inspection and packaging Inspect the quality of the finished sole and package the sole products that have passed the inspection.

[0019]

The production method of the present invention has the following excellent points and effects. 1. The manufacturing method of the present invention is simpler in process than the two conventional manufacturing methods, and in particular, the rubber sole material molded by the same mold as the semi-finished EVA insole is an unsulfurized rubber sole material. The unsulfurized rubber sole material means a material which does not have a process of placing the rubber sole material in a mold, pressurizing and heating the rubber sole material before molding it with the same mold as the semi-finished EVA insole material. Therefore, the present invention omits the steps of forming the rubber sole according to the prior art alone first, roughening the surface, and bonding. 2. By omitting the process of molding the rubber sole material first, the manufacturing time can be saved and the number of equipment can be reduced as compared with the conventional technology, and the rubber sole hydraulic machine (glue) used in the conventional technology can be used. hydrouli
c machine), laminating flowing water line (adheri)
ng blowing water line, roughing machine, and rubber sole mold are not required. 3. The present invention solves the drawbacks of the adhesive which is generated by bonding the EVA insole and the rubber sole, such as non-ideal bonding and incomplete adhesion of the bonded portion, and provides ideal peel strength. 4. The present invention can save the material of the rubber sole, reduce the weight of the finished sole, and standardize the appearance. 5. By the method of the present invention, the quality and performance of the sole can be improved, and the sole can be manufactured at low manufacturing cost. 6. The rubber sole material of the present invention eliminates the disadvantages of the prior art double sulphided rubber sole, greatly reduces the burrs cut off during the finishing stage, thus increasing the availability of raw materials and reducing pollution, The material loss when the product is not completed can be reduced as compared with the conventional manufacturing method.

[Brief description of the drawings]

FIG. 1 is a manufacturing flowchart of a semi-finished EVA insole of the present invention.

FIG. 2 is a processing flowchart of a semi-finished EVA insole of the present invention.

FIG. 3 is a manufacturing flowchart of a rubber sole material of the present invention.

FIG. 4 is a manufacturing flowchart for integrally molding a semi-finished EVA insole of the present invention and an unsulfurized rubber sole material with the same mold.

FIG. 5 is a view showing the structure of a mold used for integral molding according to the present invention.

FIG. 6 is a diagram showing the structure of a mold used for integral molding according to the present invention.

7 is a combined sectional view of a mold used for integral molding according to the present invention, wherein A is a combined sectional view of 6A-6A in FIG. 5, and B is a combined sectional view of 6B-6B in FIG.

FIG. 8 is a sectional view of a finished sole product of the present invention.

FIG. 9 is a flowchart for finishing and packaging a finished sole product of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top cover 1 'Projection part 2 Middle frame 2' Hollow part 3 Sole mold 3 'Projection part 4 Separator 4' Concave part 10 Sole finished product 11 Rubber sole layer 11 'Rubber sole material 12 EVA insole layer 12' EVA insole semi-finished product 13 Insole side wall

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (Reference) B29K 105: 24 B29L 31:50 F term (Reference) 4F050 AA01 AA06 BA04 BA43 BA55 HA53 HA58 KA06 KA10 KA13 4F204 AA10 AA46 AB03 AB07 AB12 AB16 AB17 AB19 AD05 AD17 AD27 AG03 AH67 AR02 AR06 AR11 FA01 FB11 FE06 FE09 FE16 FE18 FF01 FF05 FF06 FH19 FH21

Claims (2)

[Claims] 1. An athletic shoe comprising the steps of manufacturing and processing a semi-finished EVA insole product 12 ', manufacturing an unsulfurized rubber sole material, and integrally molding the semi-finished EVA insole product 12' and a non-sulfurized rubber sole material in the same mold. In the sole manufacturing method of A., the process of manufacturing the unsulfurized rubber sole material may include: Blending, kneading, B. Add chemicals, pigments, knead, take out, C.I. Cooling; In each of the cutting steps, the blending and kneading steps of the above A, in which the blender is started and the rubber sole raw materials, polybutadiene rubber, polyisoprene rubber and brediene acrylonitrile rubber, are charged into the blender, and further a processing aid is added. For about 130 to 150 seconds, and after about 20 to 25 seconds, add silica and a coupling agent and knead for 60 to 80 seconds. After 20 to 25 seconds, further add zinc oxide, silica, stearic acid, and Montaclare (Montaclere). ),
Wax, carbowax (Carbowax) and procling oil are added, and the mixture is kneaded for 160 to 180 seconds, and the temperature is set to 120 ± 5.
In the step of adding chemicals, pigments, and kneading in step B, the rubber sole basic material blended in step A is placed in a tumbler, rolled and softened, and a predetermined amount of pigment is added. When the pigments are well mixed, additional chemicals, i.e., sulfur, thiofide, are used.
e), Thiotax and Mono-thiurad were added, and the mixture was rolled repeatedly with a tumbler to uniformly knead the material. After sufficiently kneading, the material was taken out. Is cooled by a refrigerator to prevent the materials from sticking to each other, and in the cutting step of D, the rubber sole material is cut as required during manufacturing and is made ready for use in a subsequent process. A method for producing a sole for athletic shoes, comprising: 2. The process of integrally molding the semi-finished EVA insole 12 ′ and the unsulfurized rubber sole material in the same mold includes the following steps A to D: A semi-finished EVA insole product 12 'and an unsulfurized rubber sole material 11' are prepared, and a chemical water is applied to a bonding portion of the two with a brush, and the chemical water uses toluene and a detergent. Drying for 60 minutes B. Put unsulfurized rubber sole material into sole mold 3,
B. Place the diaphragm 4 on the sole mold 3, remove the diaphragm 4 by cooling, cut off the protruding portion of the rubber sole material 11 ′, and form the rubber sole material 11 ′ into a predetermined outer shape. EVA insole semi-finished product 12 'is molded into the middle frame 2
Step D. The EVA insole semi-finished product 12 'in the mold and the unsulfurized rubber sole material are combined by heating, pressurizing and freezing to form a finished sole, and the pressurizing pressure is 60 ± 10 kg / m.
The heating temperature is about 155 to 165 ° C, and the heating time is 9 to 10
The method of claim 1, further comprising: setting the freezing time to 18 to 20 minutes.