KR100604990B1 - Method for manufacturing of outsole in footwear and outsole thereof - Google Patents

Abstract

Provided are a method of manufacturing a cup insole type shoe insole using a natural vegetable preparation, coconut fiber, and a structure of the shoe insole. The manufacturing method of the shoe insole, perforated first holes having a first size in the first sponge synthetic resin cut to the size required by the shoe sole surface by mixing at least one or EVA or latex, PU and PE Adhering a fiber fabric to the upper portion thereof; Cutting the coconut fiber sheet to a first size such as the perforation, and then applying an adhesive on the upper portion of the coconut fiber sheet to insert into the perforated first holes of the first sponge synthetic resin; The coconut fiber sheet is coalesced by drilling a second hole having a second size smaller than the hole of the first size in a second sponge synthetic resin cut to a size necessary to the bottom of the shoe and applying an adhesive on the upper portion thereof. Attaching to the bottom of the sponge synthetic resin and coalescing the resin; The product is put into a mold having a shape of the bottom of the shoe and thermally compressed to form a shoe insole of a cup insole type having a shape of the bottom of the shoe.

Shoe insole, coconut fiber, mesh fabric, high elastic sponge, adhesive,

Description

METHOD FOR MANUFACTURING OF OUTSOLE IN FOOTWEAR AND OUTSOLE THEREOF             

1 is a manufacturing process of the shoe insole in accordance with a preferred embodiment of the present invention.

Figure 2 is a block diagram of a shoe insole manufactured according to a preferred embodiment of the present invention.

Figure 3 is a block diagram of a shoe insole according to a second embodiment of the present invention.

4 is a cross-sectional view illustrating main parts of the shoe insole of B-B shown in FIG. 2.

<Description of the symbols used in the main parts of the drawing>

10: fiber fabric, 12: first sponge synthetic resin

14: second sponge synthetic resin, 15: mesh fabric,
16: first hole, 18: coconut fiber,
20: second hole, 22: special adhesive,

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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe insole and a method of manufacturing the same, and more particularly, to a method of manufacturing a cup in sole type shoe insole using coconut fiber, which is a natural vegetable preparation, and a shoe insole thereof.

Typically, the shoe insole is a component of the shoe that is directly attached to the sole of the wearer to be in contact with the sole of the shoe, even if the shoe is worn for a long time should be manufactured to minimize the fatigue of the foot due to walking comfort. The shoe insole is made of a cushioning material so that the shape is made in accordance with the shape of the bottom surface of the shoe, and the wearer can feel comfortable when walking and reduce fatigue.

However, in the case of shoes such as sneakers, the cushioning material itself is warm, so when wearing these shoes for a long time, a lot of heat is generated and accumulated on the bottom of the shoe, and the generated heat is not easily released, so the shoes are taken off. In case an unpleasant foot odor is generated. In addition, there is a problem that various bacterial foot disease is caused by the sweat generated in the foot. Therefore, in hot weather, as well as silk sneakers, various shoes are very burdened when wearing shoes due to the above problems.

In the related art, in order to solve the above problem, a large number of holes are formed in the shoe insole for air circulation to cool the heat. However, such a conventional shoe insole is not a fundamental solution to cool the internal heat or to prevent foot odor because the air circulation is not made at all inside the shoe.

In order to solve the above problems, a shoe insole made of coconut fiber excellent in sweat absorption, breathability, and deodorizing effect has been registered as Utility Model Registration No. 221861. Coconut fiber, which is used as a shoe insole, has excellent breathability, and it has been widely applied to products requiring cushions, such as bed mattresses, because of its excellent infrared radiation, deodorization and antibacterial effects. "Shoe insole with coconut" disclosed in the registration No. 2218 is also a product using commercially available coconut fiber.

Looking at the pre-registration of the design, it is a flat type sole type that is press-cut to have a bottom surface shape inside the shoe by adhesively bonding the fiber fabric to one side of the coconut fiber disc made of a thin thickness.

The shoe insole manufactured as described above is excellent in absorbing sweat, breathable and deodorizing effect, while the thickness is so thick that it is inconvenient to be put on the sole of the shoe, When worn, the space inside the shoe is narrowed due to the shoe insole, resulting in a lowering of the wearing comfort, thereby causing a problem of easily feeling fatigue during walking.

In addition, the shoe insole is a combination of coconut fibers made to be applied to a variety of items (universal) to the shoe insole without post processing (post processing), so that the coconut fibers made by intertwining the coconut fiber strands are easily split (cracked) There are many problems in durability, such as losing, so that it was difficult for consumers to secure the reliability of the shoe insole.

Therefore, the present invention is to solve the conventional problems as described above, by selectively coalescing coconut fiber sheet (coconut fiber sheet) to a sponge (synthetic sponge) resin resin while maintaining a high-quality fit, sweat absorption, breathability, deodorizing effect To provide a shoe insole and a method for producing a shoe insole that can have.

It is another object of the present invention to punch a sponge synthetic resin such as ethylene vinyl-acetate co-polymer (EVA), polyethylene (PE), polyurethane (PU), latex (latex), etc. After inserting the fiber and the mesh fiber fabric on the upper and lower surfaces thereof to provide a method for producing a shoe insole with good sweat absorption, breathability, deodorizing effect and the shoe insole.

The present invention for achieving the above object is the step of cutting the first and second sponge synthetic resin, such as fiber fabric and EVA, latex, PE, PU to an appropriate size, and the first to the first sponge synthetic resin Perforating the first holes having a size and applying the adhesive with the appropriately mixed hardener on the upper surface thereof to bond the cut fabrics, and cutting the coconut fiber sheet to the first size such as the perforation. Applying a suitable adhesive mixed with a curing agent on the upper part of the first sponge synthetic resin and inserting the adhesive into the perforated first holes; and forming the second sponge synthetic resin smaller than the first size hole. Punch the second holes having two sizes and apply the adhesive with the appropriate curing agent on the top to attach the coconut fiber sheet to the bottom of the first sponge synthetic resin. The step of coalescing, and the fiber fabric is adhered to the upper portion and the coconut fiber is inserted into the perforated hole and coalesced to compress the first sponge synthetic resin agent bonded to the second sponge synthetic resin on the bottom thereof to have a shape of a shoe sole surface. Molding into a shape of a shoe sole by applying heat of 70 ° to 150 ° for about 6 minutes, compressing and cooling the completed insole, and cutting a burr into a shape of a shoe insole. Is made of.

Preferably, the bottom surface of the second sponge synthetic resin is preferably a mesh fabric woven with a polyester fiber in a mesh pattern to be further added by thermal compression.

According to another aspect of the present invention, a shoe insole is formed of a first sponge synthetic resin such as EVA, latex, PE, PU, and the like, in which first holes of a predetermined size are perforated, and fibers formed on top of the first sponge synthetic resin. Coconut fiber sheet cut to fit to the fabric, the size of the perforated first hole and inserted into the first hole of the first sponge synthetic resin and coalesced, and the first sponge synthetic resin at a position corresponding to the puncturing position of the first sponge synthetic resin A second sponge having a size smaller than one hole is perforated and attached to the bottom of the first sponge synthetic resin, characterized in that the second sponge synthetic resin to prevent the separation of the coconut fiber sheet.

Preferably, a mesh fabric woven in a mesh pattern may be attached to the bottom surface of the second sponge synthetic resin.                         

The fiber fabric and mesh fabric adhered to the top and bottom surfaces of the sponge synthetic resin are polyester fibers, and are formed by thermal compression after an adhesive having a suitable amount of a curing agent is applied to the top surface of the sponge synthetic resin. It is desirable to.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the invention can be implemented in many different forms and should not be limited to the described embodiments. It should be noted that the embodiments of the present invention described below are intended to sufficiently convey the spirit of the present invention to those skilled in the art.

1 is a manufacturing process diagram of a shoe insole according to a preferred embodiment of the present invention, Figure 2 is a block diagram of a shoe insole manufactured according to a preferred embodiment of the present invention. 1F is a cross-sectional structure of the A-A line of FIG.

First, referring to Figures 1 and 2 will be described in detail the manufacturing process and configuration of the shoe insole using a coconut fiber sheet according to a first embodiment of the present invention.

[Step 1]

Cut the fabric of fabric 10, for example, fabric of polyester fiber, fabric, non-woven fabric or natural yarn made by weaving chemical yarn to the appropriate size required for the shoe sole surface. Then, the first and second sponge synthetic resins 12 and 14 having sufficient cushioning as the shoe insole are cut and prepared to the size required for the bottom of the shoe, that is, the width and the length of 40 centimeters. Here, the first and second sponge synthetic resin 12, 14 may be used selectively in EVA, PE, PU, latex, etc., or a mixture of two or more. And the thickness of the second sponge synthetic resin 14 is preferably formed to be thinner than the thickness of the first sponge synthetic resin (12).

After that, the mesh fabric 15 to be placed at the lowermost position of the shoe insole is cut and prepared to the appropriate size. Here, the appropriate size is a rectangular shape, it is sufficient if the size of one shoe insole made. For example, a width of 40 centimeters is appropriate. At this time, the mesh fabric 14 is preferably using a polyester fiber fabric woven in a mesh pattern.

As described above, a projection fitting hole having a predetermined diameter is drilled into the fiber fabric 10, the first and second sponge synthetic resins 12 and 14 cut to the same size. For example, the projection fitting holes may be drilled in the four corners of the cut fabric and the resin, and the projection fitting holes may be drilled at appropriate positions as necessary. This protrusion fitting hole is fitted to a fixing pin (not shown) protruding inside the mold (molding mold) for molding the shoe insole to fix the material for making the shoe insole in the mold mold to be described later. This is to ensure that the holes punched in the first sponge synthetic resin 12 come precisely at the required center position of the insole.

[Step 2]

The first hole 16 for inserting the coconut fiber sheet 18 at the appropriate position of the first sponge synthetic resin 12 cut by the first step is drilled as shown in FIG. At this time, the first hole 16 made by the drilling process is formed in the part where the front part and the rear part of the sole touch each other. That is, it should be set to a shape and size for incorporating a coconut fiber sheet into an appropriate size for good breathability between the upper part of the shoe insole which the wearer's sole touches and the bottom of the shoe insole which the shoe upper surface touches.

[Step 3]

Subsequently, a special adhesive 22, in which an adhesive and a curing agent are mixed about 10: 1, is applied to the upper surface of the first sponge synthetic resin 12 in which the first hole 16 is punched, as shown in FIG. Thereafter, the fiber fabric 10 is adhered to the upper surface of the first sponge synthetic resin 12 as shown in FIG.

[Step 4]

Coconut fiber sheet 18 is cut as shown in FIG. At this time, the size and shape of the cut of the coconut fiber sheet 18 should be the same as the size and shape of the first hole 16 perforated in the first sponge synthetic resin 12. For example, the coconut fiber sheet 18 is cut into a shape and size to be fitted into the first hole 16 of the first sponge synthetic resin 12.

Thereafter, two grooves having a size of the second hole 20 formed smaller than the size of the first hole 16 and the first hole 16 are formed stepped as shown in FIG. It is put in a forming press (FP) and pressed at a pressure of several tons to several tens of tons for extrusion molding. In FIG. 1D, reference numeral FPC denotes a pressure unit that applies pressure to the molding press FP.

By the above-mentioned extrusion, the coconut fiber sheet 18 which is stepped so that the size of the upper part and the lower part may respectively fit the 1st hole 16 and the 2nd hole 20 can be obtained, and an adhesive agent and a hardening | curing agent are suitable on the upper surface The special adhesive 22 mixed is applied as shown in FIG.

[Step 5]

The first hole 16 of the first sponge synthetic resin 12 made by the third manufacturing process by cutting the upper part of the coconut fiber sheet 18 of FIG. 1 to which the special adhesive 22 is applied by the fourth manufacturing process. 1) and coalesce as shown in FIG. 1 (F), and then apply heat.

[Step 6]

A second hole 20 smaller than the size of the first hole 16 drilled by the first manufacturing process is formed by drilling in the prepared second sponge synthetic resin 14 as shown in FIG. At this time, the shape of the second hole 20 should be the same as the diameter of the lower portion of the coconut fiber sheet 18, the upper and lower portions are formed stepped, it should be smaller than the size of the first hole (16).

Subsequently, after applying the special adhesive 22, in which an adhesive and a curing agent are appropriately mixed, on the upper portion of the second sponge synthetic resin 14 in which the second hole 20 is punctured, As in G), it is attached to the coconut fiber sheet 18 protruding from the bottom of the first sponge synthetic resin 12 to be thermocompression-bonded to the bottom of the first sponge synthetic resin 12.

As such, the second hole 20 of the second sponge synthetic resin 14 formed smaller than the first hole 16 is inserted into the coconut fiber sheet 18 protruding from the bottom surface of the first sponge synthetic resin 12. As a result, the edge portion of the coconut fiber sheet 18 which is inserted into the first hole 16 of the first sponge synthetic resin 12 and coalesced is overlapped.

The product made by the above manufacturing processes is made of a thin fiber fabric 10 having a thin film form on the top and bottom surfaces of the first sponge synthetic resin 12 in which the coconut fiber sheet 18 is inserted into the first hole 16. The second hole 20 of the two sponge synthetic resin 14 is positioned so that the coconut fiber sheet 18 fitted into the first hole 16 of the first sponge synthetic resin 12 is kept in a stable state.

If necessary, the mesh fabric 15 of the polyester yarn woven in a mesh pattern on the bottom surface of the second sponge synthetic resin 14 can be bonded. The mesh fabric 15 is to prevent the slip of the shoe bottom surface and the shoe insole when it is seated on the shoe bottom surface.

[Step 7]

The fiber fabric 10 and the second sponge synthetic resin, in which the coconut fiber sheet 18 is positioned in the first hole 16 of the first sponge synthetic resin 12 and woven in a mesh pattern on the upper surface thereof, by the sixth manufacturing process. Compress the article to which (14) is bonded to enhance the adhesion between the fiber fabric 10, the first sponge synthetic resin 12, the coconut fiber sheet 18 and the second sponge synthetic resin 14.

The product is then placed in a mold for molding a shoe insole. In this case, pins having a predetermined length protrude from the inside of the mold, and projections perforated at corners of the fiber fabric 10, the first sponge synthetic resin 12, and the second sponge synthetic resin 14 are formed. A hole is inserted into the mold by protruding pins protruding at four corners of the mold. The coconut fiber sheet 18 is fitted into the pins formed in the mold by inserting the perforated fitting holes at the edges of the fiber fabric 10, the first sponge synthetic resin 12, and the second sponge synthetic resin 14. The first hole 16 of the first synthetic resin 12 can be positioned at the required center of the insole.

After inserting the product into the mold as described above, the heat injecting molding for 5 minutes to 10 minutes at a pressure of 50 to 150 tons cup in sole type shoe insole having a shape as shown in FIG. 30 is molded. At this time, the mold has a heat of about 80 degrees to 120 degrees and should be provided with a mold having a shape of the shoe bottom surface.

By the thermal compression molding as described above, the fiber fabric 10, the first sponge synthetic resin agent 12, and the second sponge synthetic resin agent 14 are thermally compressed to the coconut fiber sheet 18 and at the same time of the coconut fiber sheet 18 It is thinner for better breathability.

[Step 8]

The shoe insole 30 made of the cup-in-sol type by the seventh manufacturing process is put into a molding mold cooled to a temperature of 5 degrees to 7 degrees and compressed for 5 to 10 minutes at a pressure of 50 to 150 tons. As such, the shape of the shoe sole is maintained by cooling the shoe insole 30 manufactured in the cup insole type in the cooled mold, and the fiber fabric 10 and the first sponge synthetic resin are formed on the coconut fiber sheet 18. 12 and the second sponge synthetic resin 14 remain firmly bonded.

When the burr portion of the molded shoe insole 30 is cut out using a cutter (not shown), a cup insole type shoe insole having the shape of the bottom surface of the shoe having an independent shape as shown in FIG. ) Is completed.

Looking at the configuration of the shoe insole using a coconut fiber produced by the manufacturing method of the present invention.

The shoe insole 30 using the coconut fiber sheet 18 is made of a first sponge synthetic resin made of at least one or a mixture of two or more of EVA, latex, PE, and PU cut to an appropriate size according to the shoe size. The fiber fabric 10 woven in a mesh pattern is thermally bonded to the upper surface on which the first hole 16 having a predetermined size is formed at 12.

In addition, the coconut fiber sheet 18 is inserted into the first hole 16 perforated in the first sponge synthetic resin 12, and the bottom thereof is smaller than the first hole 16 of the first sponge synthetic resin 12. The second hole 20 of the second sponge synthetic resin 14 perforated in size is placed on the bottom of the coconut fiber sheet 18 and thermocompressed.

As described above, the shoe insole 30 using the coconut fiber sheet 18 according to the present invention is thermally compressed by bonding the fiber fabric 10 and the first sponge synthetic resin 12 woven in a mesh pattern. In addition, the second sponge synthetic resin agent is formed by attaching the coconut fiber sheet 18 to the first hole 16 formed in the first sponge synthetic resin agent 12 and having a smaller perforation than the first hole 16 in the bottom surface thereof. By positioning and adhering the second hole 20 of 14, the coconut fiber sheet 18 mounted in the first hole 16 of the first sponge synthetic resin 12 is held in a stable state. By the second hole 20 of the second sponge synthetic resin 14 formed by thermocompression bonding to the bottom surface it is possible to smoothly ventilate through the coconut fiber sheet 18.

3 and 4 show the configuration of the shoe insole 30 and its main cross section according to the second embodiment of the present invention. Referring to FIGS. 3 and 4, polyester fiber fibers instead of the second sponge synthetic resin 14 attached to the bottom of the first sponge synthetic resin 12 in a structure as shown in FIGS. 1 and 2 are mesh patterns. It can be seen that the woven mesh fabric 15 is formed by thermal compression bonding. As such, the reason why the mesh fabric 15 is adhered to the bottom surface of the first sponge synthetic resin 12 is to prevent slippage when the shoe insole 30 is seated on the bottom surface of the shoe. Accordingly, in the shoe insole 30 according to the second embodiment, the coconut fiber sheet 18 is stably fixed to the first hole 16 of the first sponge synthetic resin 12, and at the same time, the coconut fiber sheet 18 is Through ventilation can be made smoothly.

As described above, the shoe insole of the present invention, by first absorbing the impact force from the high-elastic sponge shoe insole when walking to minimize the fatigue of walking, foot disease due to the sterilization effect of far infrared rays emitted from coconut fiber In addition to preventing the odor by the deodorizing effect, the durability of the coconut fiber was improved, and the second was to compensate for the disadvantages of the existing high-elastic sponge insole and coconut insole. It is a very useful invention that raises the market competitiveness.

Claims (4)

In the manufacturing method of a shoe insole used to fit on the shoe sole surface, At least one of EVA, latex, PU, and PE, or a mixture thereof is drilled into the first sponge synthetic resin cut to the required size on the bottom of the shoe, and the first hole having the first size is bonded to the top of the fabric. Process of doing; The coconut fiber sheet is cut into a first size such as the perforation, and is molded so that the upper and lower portions are stepped into the size of the first hole and the size smaller than the first hole, and an adhesive is applied to the upper portion of the sponge synthetic resin. Inserting into the perforated first hole and coalescing the first hole; Coconut protruding on the bottom surface of the second sponge synthetic resin incorporating the coconut fiber sheet by drilling a second hole smaller than the hole of the first size in the second sponge synthetic resin cut to an appropriate size and applying an adhesive thereon. Inserting the fiber sheet into the bottom surface of the first sponge synthetic resin; The product is put into a mold having a shape of the shoe bottom surface heat compression method of manufacturing a shoe insole, characterized in that the process of molding into a cup insole type shoe insole having a shape of the shoe bottom surface. The method according to claim 1, wherein the molded insole is placed in a molding mold cooled to about 5 to 7 degrees and compressed for 5 to 10 minutes at a pressure of 50 to 150 tons to maintain the shape of a shoe insole molded into a cup-in-sol type. The method of manufacturing a shoe insole further comprises the step of forming a cold so as to be. In the structure of the shoe insole, A first sponge synthetic resin such as EVA, latex, PE, and PU, in which a first hole of a predetermined size is perforated, A fiber fabric adhered to an upper portion of the first sponge synthetic resin agent; Coconut fiber sheet cut to fit the size of the perforated first hole is formed stepped so that the lower portion is smaller than the size of the first hole, and the upper portion is fitted into the first hole of the first sponge synthetic resin and coalesced; A second hole having a smaller size than the first hole at a position corresponding to the puncturing position of the first sponge synthetic resin to prevent separation of the coconut fiber sheet attached to the bottom surface of the first sponge synthetic resin; Shoe insole, characterized in that consisting of 2 sponge synthetic resin. The shoe insole of claim 3, wherein a mesh fabric is further attached to the bottom of the first sponge synthetic resin by thermal compression after an adhesive is applied to the bottom of the first sponge synthetic resin.

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