JPH0852007A - Shoe sole and its manufacture - Google Patents

Abstract

PURPOSE:To prevent the peeling off of each unwoven cloth forming a shoe sole and strengthen the wear resistance of the ground contacting side of the shoe sole and realize the strengthening of bonding force of a middle sole and other constituent parts. CONSTITUTION:This is the manufacture of a shoe sole A by which the gathering substance of the unwoven cloth of polyester synthetic fiber or the filtered waste or the like of the unwoven cloth is coated with or immersed in a chloroprene rubber emulsion, or plural layer substances of this thing are heated and pressurized and cooled and hardened, and a shoe sole A and a sheetlike substance 1 forming part of the shoe sole A are prepared by making them part of their constitution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is mainly used for town shoes,
Improving the sole of sports shoes for running, golf, football, baseball, etc. and the manufacturing method thereof, in particular, using a sheet-like material which is an infiltration molded product of a chloroprene rubber emulsion for a non-woven fabric of synthetic resin fiber, etc. The present invention relates to a characteristic shoe sole and a manufacturing method thereof.

[0002]

2. Description of the Related Art Shoe soles made of a laminated plate of so-called artificial leather having a polyurethane resin coating formed on one surface of a synthetic fiber nonwoven fabric, or the nonwoven fabric of the shoe soles impregnated with an emulsion of polyurethane resin or polyamide resin. The following shoe sole and its manufacturing method have been proposed. By the way, the former shoe sole is slippery during walking or exercise, and parts that suppress the slipping were joined there, but it is difficult to achieve the joining process conveniently, so it is difficult to obtain a finished product, and the latter. According to the shoe and its manufacturing method, the emulsion is impregnated after it is formed on the sole, so that delamination between the artificial leather layer and the emulsion impregnated layer occurs, or moisture or the like enters between the layers. When the sole of the shoe becomes heavier or the delamination is accelerated, the ground contact side of the shoe sole is likely to wear due to contact with the ground or floor surface, and the ground contact side of the sole suppresses wear due to contact with the ground. Not only it was not enough, but the connection with the midsole was not enough, and the durability of the shoe sole was extremely poor.

[0003]

SUMMARY OF THE INVENTION The present invention overcomes the deficiencies of the conventional shoe soles and the manufacturing method thereof and prevents the non-woven fabrics forming the shoe soles from peeling off, and prevents the non-woven fabric from forming on the ground surface side of the shoe soles. It is an object of the present invention to obtain a shoe sole in which early wear due to contact is suppressed and the binding force with an intermediate sole or the like is strengthened to significantly improve the durability of the shoe sole.

[0004]

According to the present invention, a non-woven fabric of polyester synthetic fibers or an aggregate of non-woven fabric of the non-woven fabric is coated or impregnated with a chloroprene rubber-based emulsion, or a plurality of laminates thereof are heated to a predetermined temperature. The shoe sole having a sheet-like material formed by heating, pressurizing, and cooling and hardening, the sheet-like material and the outer sole, and the sheet-like material and the middle sole are housed in a mold that requires a shoe-shaped cavity, A novel method is a method for manufacturing a shoe sole that is heated and pressed at a temperature and a pressure for a predetermined time.

[0005]

The shoe sole A according to the present invention is obtained by impregnating a non-woven fabric of polyester synthetic fibers with a chloroprene rubber emulsion having good adhesion between a rubber material which is a shoe sole material and a synthetic resin material, and then at a predetermined temperature. The sheet-like material 1 is formed by applying heat and pressure for a predetermined time. Similarly, in the shoe sole A, the outer sole 2 or 3 and the intermediate sole 6 are joined by sandwiching the sheet-like object 1. Similarly, the shoe sole A has the outer sole 2 or 3 on which the sheet-like material 1 is tightly bonded to the bottom side thereof. Similarly, the outer sole 3 of the shoe sole A has a coating 7 formed on the bottom side thereof by mixing a chloroprene rubber-based emulsion with an appropriate pigment or dye. In the method for manufacturing a shoe sole according to the present invention, the sheet-like material 1 may be a non-woven fabric of polyester-based synthetic fibers, or a so-called industrial waste product of a non-woven fabric of the non-woven fabric. The sheet-shaped material is the outer bottoms 2, 3
Alternatively, it is connected to the lower surface side of 4, or is sandwiched between the front outer bottom 2 or 3 and the intermediate bottom 6 to strengthen the joining force between the outer bottom 2 or 3 and the intermediate bottom 5.

[0006]

EXAMPLES A typical example of a shoe sole A according to the present invention will be described below with reference to FIGS. First, the shoe sole A shown in FIG. 1 according to the present invention is in contact with the bottom surface side of the outer sole 2 or 3 made of solid rubber or solid synthetic resin such as natural rubber or synthetic rubber or a mixture thereof, that is, the ground or floor surface. The sheet-like material 1 is bonded and formed on the surface. The sheet-like material 1 is a molded product obtained by impregnating a non-woven fabric of synthetic fiber or the like with a chloroprene rubber-based emulsion which is excellent in adhesion between a rubber material and a rubber material, a synthetic resin material and a synthetic resin material, or a rubber material and a synthetic resin material. Therefore, the sheet-like material 1 itself is firmly adhesively bonded to the outer bottom 2 and the non-woven fabric of synthetic fibers is firmly bonded to the sheet-like material 1 and is not easily peeled off. Is better, so the durability of the outer sole 2 is enhanced.
Therefore, the shoe sole A is mainly suitable for sports shoes for football such as soccer and rugby, baseball and golf. The sole A shown in FIG.
Is formed by adhesively bonding the sheet-like material 1 to the upper surface side of the outer bottom 2 or 3 and the lower surface side of the intermediate bottom 6 made of known synthetic resin by a known means. The intermediate bottom 6 and the outer bottom 2 or 3 are firmly joined to each other by the chloroprene rubber-based molded product obtained by impregnating and molding the material 1. Therefore, the shoe sole A is mainly suitable for jogging and other running shoes for running.

The shoe sole A shown in FIG. 3 is a lower sole side of an integrated shoe sole type having an outer sole type and an intermediate sole formed by cutting an already foamed synthetic resin body by cutting or other known means. The sheet-like material 1 is sandwiched between the two, and it is suitable as an athletic shoe mainly for marathon, jogging or other running. Further, a shoe sole A shown in FIG. 4 is a molded product of a mixed compound of a chloroprene rubber emulsion and a pigment or dye of an appropriate color on the bottom side of the outer sole 2 or 3 of the rubber or synthetic resin. The molded film 7 is formed. The molded film 7 is mainly formed as a chloroprene rubber-based molded product on the outer bottom 2
Alternatively, it is possible to provide a shoe suitable for a town, which can improve the slip resistance of the outer sole or the sole of the shoe sole on the side of the ground contact surface and has a vivid color to enhance or enhance the appearance of the appearance.

Next, as shown in FIG.
The method of manufacturing the shoe sole (A) is as follows: a mold B having a shoe sole-shaped cavity formed by an upper mold 11 and an upper mold 12, a sheet-shaped article 1 and an outer sole 2 of rubber or an outer sole of synthetic resin. Prepare 3rd grade. Next, the sheet 1 is stored in the recess 13 of the lower mold 12 of the molding die B, and the outer bottom 2 or 3 is stored on the sheet 1 in the recess 13 of the lower mold 12, The lower mold 12 is sealed with the above 11, and the temperature is about 140 to 160 ° C. and the pressure is about 100 to 150 kg / cm ² , and the pressure is about 3 to 3.
After heating and pressurizing for 5 minutes, the upper mold 12 of the mold B is removed from the lower mold 12, and the sheet-like material 1 is firmly fixed from the recess 13 of the lower mold 12 to the bottom side of the outer bottom 2 or 3. It is possible to manufacture a shoe sole A bonded to the.

Similarly, as shown in FIG. 6B, a method of manufacturing a shoe sole A according to another embodiment is similar to that of the molding die B, the outer sole 2 or 3 and the already-foamed synthetic resin. A body having a substantially mid-bottom shape formed by cutting or other known means is prepared. Next, the outer bottom 2 or 3 is housed in the recess 13 of the lower mold 12 of the molding die B, and subsequently, the sheet-shaped object 1, the sheet-shaped product 1 is placed on the outer bottom 2 or 3 in the recess 13 of the lower mold 12. The above-mentioned lower mold 12
Is sealed with the upper mold 11 and heated and pressed at a temperature of about 140 to 160 ° C. and a pressure of about 150 to 160 kg / cm ² for about 3 to 5 minutes, and then the upper mold 11 of the molding mold B is moved to the lower mold 12.
It is possible to manufacture the shoe sole A by removing from the top and firmly bonding the sheet-like material 1 on the outer sole 2 or 3 from the recess 13 of the lower mold 12 and the intermediate sole 6 and the like on the sheet-like material 1. it can.

Similarly, as shown in FIG. 6 (C), the method of manufacturing a shoe sole according to another embodiment is such that the mold B, the sheet 1 and the already-foamed synthetic resin are cut and other known methods are used. By the means described above, the one having a substantially outer bottom and an intermediate bottom integrally formed or substantially outer bottom is prepared. Next, the sheet-shaped material is housed in the recess of the lower mold 12 of the molding die B, and the sheet-shaped material 1 in the recess 13 of the lower mold 12 is formed on the sheet-shaped material 1 integrally or substantially in the shape of the outer bottom and the intermediate bottom. An outer bottom type is accommodated and the lower mold 12 is replaced by the upper mold 11
And then heat and pressurize at a temperature of about 140 to 160 ° C. and a pressure of about 150 to 160 kg / cm ² for about 3 to 5 minutes, and thereafter, the upper mold 11 of the mold B from above the lower mold 12. It is possible to manufacture the shoe sole A in which the sheet-like material 1 is firmly bonded to the bottom surface side of the outer sole 4 from inside the recess 13 of the lower mold 12.

Similarly, as shown in FIG. 6D, the method of manufacturing the shoe sole A according to another embodiment is the same as that of the molding die B, the outer sole 2, 3 or 4 and the sheet-like material 1. In addition, a mixed formulation is prepared in which an appropriate amount of pigment or dye of an appropriate color, for example, 1 to 3 is added to 100 of the chloroprene rubber emulsion. The above composition is applied to the outer bottoms 2, 3 or 4 or the lower surface side of the sheet 1 in advance to form a coating film, and the outer bottoms 2, 3 or 4 having the coating film formed on the bottom surface side are formed into the molding die B. The lower mold 1 is housed in the recess 13 of the lower mold 12,
2 is sealed with the upper mold 11, or the sheet-like material 1 having the coating film formed on the bottom side is housed in the recess 13 of the lower mold 12 of the molding die B, and the outer bottom 2 is placed on the sheet-like material 1. 3 or 4
And then the lower mold 12 containing them is sealed with the upper mold 11, and then heated and pressurized at a temperature of about 140 to 160 ° C. and a pressure of about 150 to 160 kg / cm ² for about 3 to 5 minutes. , And then the upper mold 11 of the mold B and the lower mold 1
2 a shoe sole A having a chloroprene rubber-based coating 7 firmly bonded to the bottom side from inside the recess 13 of the lower mold 12 or from the upper mold 11 to the lower mold of the molding mold B.
From the inside of the recess 13 of the lower mold 12, a chloroprene rubber-based molding film 7, a sheet-like material 1 on the upper surface thereof, and an outer sole 2, 3 or 4 firmly bonded and formed on the sheet-like material 1 A can be manufactured. The already-foamed synthetic resin may be any one as long as it is a thermoplastic synthetic resin, for example, an ethylene vinyl acetate resin which is used as a material for an intermediate bottom, which is lightweight, inexpensive and has a good buffering property. Of foams are preferred. The bottom material constituting the outer sole 2 may be natural rubber, synthetic rubber or a mixture thereof, and may be selected from those having physical properties such as heat resistance, abrasion resistance or anti-slip property corresponding to respective purposes and applications. Good. Further, the non-woven fabric forming the sheet 1 may be any one as long as it is a thermoplastic synthetic fiber, but in consideration of abrasion resistance and bending resistance, a polyester synthetic fiber is preferable.
FIG. 5 is a partially enlarged cross-sectional schematic view of a laminate such as a synthetic fiber nonwoven fabric impregnated with a chloroprene rubber emulsion.

[0012]

Since the shoe sole of the present invention and the method for manufacturing the same are as described above, the sole A shown in FIG. 1 is reinforced by the sheet-like material 1 on the bottom side of the outer sole 2 or 3. Because
The ground contact surface of the shoe sole A has good wear resistance and at least soccer,
It is suitable for sports shoes for football such as rugby, golf shoes and baseball. The sole A shown in FIG.
Since the sheet-like material 1 is sandwiched and coupled between the outer bottom 2 or 3 and the intermediate bottom 6, the coupling force between the intermediate bottom 6 and the outer bottom 2 or 3 is strong, and at least for jogging and other running purposes. It is suitable as a sports shoe. Further, the shoe sole A shown in FIG. 3 has the sheet-like material 1 joined to the bottom surface side of the outer sole 4 formed by integrally molding the middle sole and the outer sole.
Since it is extremely lightweight and has good wear resistance, it is suitable as at least a sports shoe suitable for running such as jogging, marathon and the like. Furthermore, the shoe sole A shown in FIG.
Is the bottom side of the outer bottom 2, 3 or 4 or the outer bottom 2, 3
Or, since the bottom surface side of 4 has a molded coating 7 made of a compounded product obtained by mixing a pigment 1 or a dye of an appropriate color on the lower surface side or the like of which the sheet-like material 1 is bonded, the durability of the shoe sole is improved. It is possible to provide a shoe having a high commercial value, which is suitable for at least town shoes, by increasing the number of shoes and the appearance of the shoe sole.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a shoe sole according to the present invention.

FIG. 2 is also a schematic cross-sectional view of another embodiment of the shoe sole.

FIG. 3 is also a schematic cross-sectional view of another embodiment of the shoe sole.

FIG. 4 is also a schematic cross-sectional view of another embodiment of the shoe sole.

FIG. 5 is a partially enlarged cross-sectional schematic view of a synthetic fiber non-woven fabric before forming a sheet-like material or a collection of scraps thereof.

6] Similarly, (A), (B), (C) and (D)
FIG. 3 is an illustration of a partially enlarged cross-sectional schematic view of a molding die immediately before molding or vulcanizing each shoe sole according to the method for manufacturing a shoe sole of the present invention.

[Explanation of symbols]

 A shoe sole B molding die 1 sheet material 2 outer sole 3 outer sole 4 outer sole 5 approximately middle bottom type 6 middle sole 7 molding film 11 upper mold 12 lower mold 13 recess

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display area // B29C 65/02 7639-4F B29K 105: 04 105: 06 B29L 9:00

Claims (8)

[Claims] 1. A sheet-shaped product obtained by applying heat or pressure to a nonwoven fabric coated or impregnated with a chloroprene rubber-based emulsion or a plurality of laminates of this emulsion, and cooling and curing the nonwoven fabric on the outer bottom of rubber or synthetic resin. A shoe sole characterized in that it is formed so as to be joined to the lower surface side. 2. A sheet-shaped product obtained by applying heat or pressure to a nonwoven fabric coated or impregnated with a chloroprene rubber-based emulsion or a plurality of laminates thereof and cooling and curing the nonwoven fabric with the outer bottom of rubber or synthetic resin. A shoe sole, characterized in that it is formed by tight-fitting and bonding with an intermediate sole of a foamed synthetic resin body. 3. A non-woven fabric coated or impregnated with a chloroprene rubber-based emulsion or a multi-layered product obtained by heating and pressurizing and cooling and curing the sheet-like product is a molded product of an already expanded synthetic resin. A shoe sole characterized in that it is formed so as to be connected to the lower surface side of the outer sole. 4. A coating formed by applying a mixture of a chloroprene rubber-based emulsion and an appropriate pigment or dye to the bottom surface side of the outer bottom of a synthetic resin. The shoe sole according to any one of. 5. A polyester-based synthetic fiber non-woven fabric or a layer of a scrap-like aggregate thereof coated or impregnated with a chloroprene rubber-based emulsion, or a plurality of layers of the same are stored in an appropriate molding die. Approximately 140-1
A sheet-like article 1 obtained by heating at a temperature of 60 ° C. at a pressure of about 100 to 150 kg / cm ² for about 3 to 5 minutes, molding the heated and pressurized article, and cooling for about 15 minutes. Outer bottom 2 of rubber or outer bottom 3 of synthetic resin and upper die 11 and lower die 12
And forming an outer-bottomed cavity with these, the sheet-shaped material 1 is housed in the recess 13 of the lower die 12 of the molding die B, and the outer shape is formed on the sheet-shaped material 1. The bottom 2 or 3 is stored, and then the lower mold 12 is placed on the upper mold 11
Sealed at about 150-150 ° C under the temperature of about 140-160 ° C.
A method for producing a shoe sole, characterized in that the shoe bottom is molded by heating and pressing at a pressure of 160 kg / cm ² for about 3 to 5 minutes. 6. A sheet-shaped material 1, an outer bottom 4 formed by forming a foamed synthetic resin body into an outer bottom shape by a known means such as cutting, and the molding die B. The molding die B is prepared. The seed-shaped material 1 is housed in the recess 13 of B, the outer bottom 4 is housed on the sheet-shaped material 1, and then the lower mold 12 is placed on the upper mold 11
And close it at about 150-150 ° C under the temperature of about 140-160 ℃.
The method for producing a shoe sole according to claim 5, wherein the shoe sole is molded by heating at a pressure of ˜160 kg / cm ² for about 3 to 5 minutes. 7. A sheet 5 having a substantially middle bottom shape formed by forming a foamed synthetic resin body by a known means such as cutting, the outer bottom 2 or 3, and the molding die B are prepared. Then, the outer bottom 2 or 3 is housed in the recess 13 of the lower mold 12 of the molding die B, the sheet-shaped product 1 is housed on the outer bottom, and the substantially middle-bottomed product is formed on the sheet-shaped product 1. Store 5 of the
After that, the lower mold 12 is sealed with the upper mold 11, and about 14
About 150-160kg / c under the temperature of 0-160 degree C
The method for producing a shoe sole according to claim 1, wherein the shoe sole is molded by heating and pressing at a pressure of m ² for about 3 to 5 minutes. 8. A composition comprising a chloroprene rubber emulsion and a pigment or dye of an appropriate color mixed therein is applied to the bottom surface side of the outer bottom 3 of the synthetic resin. The method for manufacturing the shoe sole according to any one of claims.