KR100187478B1 - Method for producing insole - Google Patents

Abstract

The present invention relates to a manufacturing method for the production technology of a new material ventilation shoe sole processing a natural material.

Natural Palm Coarse (Sisal Palm Lock) is removed by opening machine to remove primary dust and processed into ball breaker machine with constant thickness and density. Water-soluble thermosetting resin (Melamin Ameljoen) on this processed material Resin) and high-strength carbon rubber resin (Styrene Butadiene Resin) in a ratio of 1: 1 and sufficiently stirred, then sprayed in an amount of 30g / m ² and then sprayed with a water content to produce a midsole 13 After drying enough to be less than%, cut with Round Type Cutting Knife according to the size of the product to be produced. The hot press with the temperature of 150 ℃ and the average pressure of the gauge is 50kg / cm ² , which is compressed and molded based on the average pressurization time of 5 minutes.

After the press molding is completed, the product is rapidly cooled for about 10 minutes in a cold press with a unit pressure of 10 kg / cm ² , and then cut, processed, and inspected according to the product dimensions in a round type cutting knife. The present invention relates to a shoe sole manufacturing method of a natural material having moisture absorption, ventilation and elastically molded ventilation function in the order of finished products.

Description

[Name of invention]

Shoe sole manufacturing method of natural material with ventilation function

Detailed description of the invention

[Purpose of invention]

The present invention relates to a shoe sole manufacturing method of a natural material having a ventilation function invented to produce a midsole of a shoe having a ventilation function by extracting and reprocessing plant fiber from a scrubber and palm fiber.

[Technical Field of the Invention and Prior Art in the Field]

The present invention relates to a shoe sole, extracting the fiber from the fruit of plants such as scrubbers and palms with excellent fiber, and then burnt it to add a thermosetting resin as a binder, and then dried by rapid cooling at high temperature and high pressure By completing the product, it can be used as a shoe midsole.

Existing shoe midsole is a processed product molded with high pressure by adding waste fiber cotton and synthetic resin, and it is hard and not ventilated at all when walking. Especially when there is a lot of sweat on winter feet, there is moisture between synthetic insole and midsole. There are problems such as athlete's foot and odor in shoes, and frostbite when exposed for a long time. Also, existing Texion Board is made of cotton and synthetic resin, which is weak in durability and resilient when bending occurs. There is no problem in peeling well in a humid state and absorbing the elasticity, so long time use in the leisure and sports shoes or boots, so there is a gap and cracks.

[Technical problem to be achieved]

The present invention has been invented in view of the above problems, and the present fiber has natural fiber and synthetic fiber, but until recently, the product development technology of natural fiber was low, so that the product development was gradually expanded to study its use only in some developed countries. It is occupying the world market. In addition, natural fiber is widely used in the future, and it can be used as a mattress, door mat, brush mat, carpet underlayer, filter, car seat cushion, aquaculture rope, waste glass treatment agent and building interior material for soundproofing, sound absorption, heat storage plate, etc. The field of application is endless.

Therefore, the present invention is to extract the fiber by using the properties of the product with excellent fiber, such as plants such as scrubbers and palm trees, and then entangled with the other material, and the thermosetting resin Emaljoen Resin or melamine resin (Melamin) Resin) and Styrene Butadiene Resin, a highly elastic rubber resin, are added as a binder and mixed. The resin is sprayed on a natural fiber bolt in an amount of 30 g / m ² and dried in a dryer to have a water content of 13% or less. It was then invented to produce natural new material ventilation midsoles for shoes, which were cut into product processing dimensions and pressurized, molded and rapidly cooled at high temperatures of 150 ° C. and high pressures of 50 kg / m ² per unit pressure.

[Configuration and Function of Invention]

The present invention is to unwind curled coils (Crul Coir) extracted from vegetable natural materials such as palm trees, scrubber, rice straw, barley straw, straw, shank, etc. in a coiling (Untwisting Machine) and the first masking machine ) When the fiber is blown and loaded and then automatically transferred, the fiber bolts are continuously produced.The thermosetting resin (Emaljon Resin) and the high-strength carbon rubber resin (SBResin) are mixed in the unit of 30g / m ² . After spraying, vulcanizing chamber is applied, and the resin-coated material is dried by indirect heat in a Net Dryer so that the water content is 15% or less. The temperature should be constant and the drying temperature inside the dryer should be as high as 150 ℃.

The dried material as described above is subjected to secondary compression and vulcanization with a heat compression roller (Press Roller) and then cut according to the specifications of the product, and the material is molded in a hot press.

The compression molding temperature is to be 150 ℃, the deviation of the heating plate (Hating Plate) temperature should not exceed 5 ℃, the pressure is more than 30kg / cm ² pressurization, the pressurization time of the product according to the thickness of the product produced It will vary, but usually within 1 to 10 minutes.

Since the thermostatically molded products have different tensile properties of fibers, rapid cooling is performed under pressure to prevent warping. At this time, if cooling is performed in the absence of pressure, 100% deformation occurs, so it is necessary to pressurize with a hot press and then perform rapid cooling with a cooling press.

As described above, the cooled product is cut according to a predetermined specification, but the fiber cutting is performed by using a knife saw (Knife Cutting Saw) rather than a general saw blade to prevent tangling.

The finished product is used as a shoe midsole after the inspection.

Based on the above-described manufacturing process will be described a comparative example and an embodiment of the present invention, the comparative example does not take the extract of the fiber and the embodiment describes the experimental example of the other side of the fiber.

Comparative Example 1

Water-soluble melamine resin (DM 60 NO. 6005) was mixed 1: 1 with water in the amount of 50 g / m ^{2 to} the palm fiber, and then 50 kg / cm ² for 15 minutes at a temperature of 180 ° C. with a hot press. Compression and molding under pressure.

After molding, the product was cooled to 30kg / cm ² cold pressure state to prevent deflection of the product due to the tensile force of the fiber product.

At this time, the product has a low binding force due to the imbalance between the fiber and the resin, and after confirming the synthetic state of the fiber and raising the temperature to 200 ℃, due to the characteristics of the natural fiber, the product has a fire.

Comparative Example 2

Water-soluble melamine resin (Melamine Resin / KOLONG KNF-100D / solid content 75%) was diluted 1: 1 with water and sprayed at 50g / m ² with a solid content of 37.5%, and 50kg / at a temperature of 160 ° C. Molding was carried out at a pressure of cm ² for 10 minutes.

At this time, some surface of the product generated bubbles and wave pattern, and tended to rise slightly, but some of the cross sections were relatively good, so there was a lot of useful value as a soft product.

Comparative Example 3

The product of water-soluble melamine resin (KNF-225: solid content 45%) was mixed with boiled barley straw, heated to a temperature of 150 ° C, and molded at a pressure of 50 kg / cm ² for 10 minutes.

Although the surface of the molded article was better than Comparative Example 2, the thickness variation occurred due to the poor product density, and the peeling phenomenon and the pores were formed due to the moisture in the product surface and the product.

At this time, after drying for about 10 minutes at the dryer temperature of 130 ℃, the surface and the internal condition was good in the rework process, but the soft material could not be obtained only by thermosetting resin.

[Comparative Example 4]

Manila hemp (麻) a water-soluble melamine resin, a material injecting (Melamin Resin solids 65%) in an amount of 30g / m ^2, which was about 10 minutes, dried at 130 ℃ dryer for ryaeul also moisture reduce a so that the water content is 12% After molding for 5 minutes at a pressure of 50kg / cm ² at a temperature of 150 ℃.

At this time, the solid content was not a problem for the binding force of the product and the surface state of the molded product was also good.

In conclusion, the type and quality of the fiber material is not a problem. It only requires the accuracy of the density when the material is laminated, and the thermosetting resin is so strong that it is suitable for the production of high-density products (hard density). Not suitable for the product (Soft Density).

[Comparative Example 5]

For applying a (solid content 50% Styrene Butakiene Resin / Ulsan Pacific Chemical, Ltd.) in an amount of 50g / m ² and to reduce the water content to 13% of a water-soluble instead of the water-soluble melamine resin in the processed materials of coconut fiber carbon acrylic rubber resin SB al After drying by indirect heat of 150 ℃ drying temperature was molded for 5 minutes at a pressure of 50kg / cm ² at a temperature of 150 ℃.

At this time, the surface and elasticity of the molded product were good, but the tensile strength and durability were weak.

Comparative Example 6

SB resin was first sprayed onto the processed material of palm fiber, and then powdered reamine resin (Powder Type Melamin Resin: KC 3060) was applied thereon, and then molded at a pressure of 50 kg / cm ² at a temperature of 150 ° C. for 5 minutes.

The surface condition and the inside of the product had no abnormality in elasticity and strength, but odor was badly generated during operation and the surface became yellow.

At this time, it was concluded that the powdered resin was unsuitable as the used resin due to the odor during the operation.

Comparative Example 7

50% of Esvial resin and 50% of water-soluble melamine resin (KOLONG KNF-225) are mixed with palm fiber processing material and stirred for 2 hours, and then double-sided spray coating is applied in an amount of 30g / m ² , After drying to less than 13%, the product pressure was 50kg / cm ² , and the vulcanization temperature was molded for about 5 minutes based on 150 ℃.

At this time, the surface condition of the product and the curing condition and hardness of the inside were very good.

As shown in the comparative example above, in order to maintain a constant product density without variation, regardless of the type of natural fiber, the pre-treatment process is required to shake off the fiber, and as a binder can be produced high-strength product with only thermosetting resin, but soft It is well shown that carbon rubber has a significant impact on the production of a product.

In addition, due to carbon rubber resin, the binding force is lowered, the durability of the product cannot be adjusted, and due to the long curing time of the fiber, the resin used must be mixed resin, and the type of material as in Comparative Examples 3 and 4 There is no problem, but when the thermosetting resin is used as a binder, the water must be evaporated and dried to have a water content of 13% or less.

At the time of press molding, the average vulcanization temperature is 150 ℃ and the pressure is 50kg / cm ² and the average cure time is 5 minutes to prevent product defects. Mass production was possible.

Therefore, the present invention looks at the embodiment of the manufacturing process of the other state by shaking the fiber as follows.

Example 1

Palm fiber processing material 1kg of water-soluble melamine resin and 1kg of carbon rubber resin are stirred in a mixer, and the binder is evenly sprayed and applied to palm fiber, and the water content is dried in the dryer to 13% or less, and the dried material is pressed at a temperature of 120 ℃, pressure 30kg / cm ² , the pressurization time was pressed for 10 minutes, and then the molded product in a hot press was cooled to about 10 minutes in a cold press at 10kg / cm ² to make a finished product.

At this time, the surface condition and strength of the product were good, but the surface of the product was so rough that the texture of the product was not good.

Example 2

The coconut fiber workpiece carbon rubber resin and a water-soluble thermosetting resin (Melamin Resin / Oriental Corp Product solids content 72%) of a 1: 1 mixture to both surfaces coated with a 30g / m ² units of the spray mixture was stirred for 2 hours, the internal temperature After adjusting the water content to 13% or less in the dryer at 120 ℃, place the small window (cloth) and cotton cloth on both sides of the material, set the temperature to 120 ℃ in the thermostatic press with constant temperature distribution, and the unit pressure 30kg / cm ² Molding was carried out for 10 minutes.

The finished product was rapidly cooled for about 10 minutes in a 10kg / cm ² cold press to make a shoe sole.

This product is a process that does not require a mold, the thickness deviation of the product as well as the product condition is very good, but small window, cotton cloth and surface occurred.

Example 3

After mixing and stirring the carbon rubber resin of palm fiber processed material and about 30% of powder type water-soluble thermosetting resin (Melamin Resin Powder / K.C3080) for about 2 hours, spray is about 30g / m ² units were coated on both sides and dried in a dryer with an internal temperature of 130 ℃ and less than 13% of water content. Then, cotton cloth was laid on both surfaces of the material, and the plate was compressed and molded for 5 minutes at a hot plate temperature of 150 ℃, a gauge pressure of 50kg / cm ² , and a pressurization time of 5 minutes. .

The finished product was rapidly cooled for about 10 minutes in a cold press with a gauge pressure of 10 kg / cm ² to make a finished sole sole.

This product also had a good surface condition, but lacked tensile strength and waterproofness as much as palm fiber.

Example 4

Boil manila ginseng, rice straw, straw, etc., and then uniformly align the first dry processed material in a dryer with uniform thickness and density, and mix Esbial resin and thermosetting resin (KNF-225) in a ratio of 6: 4. After stirring, spray it on both sides in the amount of 30g / m ² and adjust the moisture content to spread small windows on both surfaces of the material, adjust the heat pressure temperature of the press to 140 ℃, and adjust the gauge pressure to 50kg / cm ² 5 minutes compression and molding.

The finished product was rapidly cooled for about 5 minutes in a cooling press to make a finished midsole.

This product also had a good surface condition, but lacked tensile strength and waterproofness as much as palm fiber.

Example 5

The double-sided coating on the movable material of coconut fiber carbon rubber resin in an amount of 30g / m ² after processing the first vulcanized thermoset in the cut, as dried, the product processing dimension such that the water content is 13% or less and cutting the material resin ( Melamin Amaljon after the Resin KC-403) spray coating a long home in an amount of 20g / m ^2, the surface of the material, laying the natural fiber fabrics of different primary color (Color), the molding temperature was 150 ℃, the unit pressure of the product Was adjusted to 50kg / cm ² and thermoformed for 5 minutes.

After the molding was completed, the product was rapidly cooled for about 5 minutes in a cooling press to make a finished midsole disc.

At this time, the product has excellent durability and tensile strength, and excellent surface warning and color.

Example 6

Regardless of the type of natural materials, resins are mixed with resin, which is convenient for processing, and it is good for the durability, elasticity and tensile strength of the product.If the thickness of the bolt is adjusted regularly, it is convenient to control the thickness of the product. In order to minimize the moisture content of the resin by laying the surface fiber for surface treatment, the molding temperature is based on 150 ℃, the gauge pressure is 50kg / cm ² as the reference pressure, the average residence time is 5 minutes After molding, if the cooling time was sufficiently cooled for about 5 minutes, it was possible to mass-produce a product of a constant thickness to a desired quality as intended.

The surface texture and quality of the products are especially excellent when the small window or cotton cloth of various colors and types is attached to the surface of the material, so that there is no absorption thickness expansion rate or deformation of the product. And the barley has some expansion of absorption thickness after processing, but natural palm fiber does not absorb moisture at all and the pores of tissue keep the ventilation as it is, so it is not only suitable as a substitute material for shoe sole, but also the ventilation of fiber The midsole was the most suitable material to be used as a light product with excellent processability.

As can be seen from the above embodiment, the shoe-vent midsole made of fiber of the present invention minimizes the moisture content in the dryer after increasing the adhesiveness of the material by spraying a small amount of thermosetting resin and high elastic rubber resin, which are binders after the palm fiber is the main raw material. After pressing and molding at high pressure and high temperature by using a press, it is cooled and cut according to the specifications of the product, thereby maintaining a constant product density without variation.

Therefore, a brief summary of the manufacturing process according to an embodiment of the present invention made as described above is as follows.

Extraction of fiber from plants → Dust removal from primary screening machine → Ventilation of fiber materials from secondary screening machine → Mixing of thermosetting resin and rubber resin and spraying (30g / m ² unit) → Vulcanization → Drying (moisture content) 15% or less) → hot pressing and molding with a press → rapid cooling with a pressing press → cutting, inspection, and finished products.

[Effects of the Invention]

The present invention made as described above is due to the unique structure of the fiber by producing a shoe sole using the fiber of the plant, not only slipperiness and breathability is very good, but also the thermosetting resin makes the surface of the product excellent, high elastic rubber resin of the product It increases the strength and prevents cracking.

Therefore, the present invention maintains sufficient elasticity and breathability by utilizing the properties of the rubber resin and the properties of natural fiber products according to the processing method, heat resistance, high cold resistance and excellent wear resistance of the surface to remove moisture in the shoes when used to prevent athlete's foot Of course, it has a cushion on the sole of the shoe, so it will reduce the fatigue of the foot when walking.

Claims (2)

Coarse fiber made of natural fiber material is pre-processed to create a fiber-like chopped structure with constant thickness and density, and acrylic emaljon resin, urea resin and melamine resin ) And a mixture of high-strength carbon rubber resin (Styrene Butadiene Resin) in a ratio of 1: 1, and agitated, sprayed 30g / m ² uniformly on both sides, and dried so that the moisture content of the bolt was 13% or less. And cut it according to the dimensions of the product and insert it into the molding machine. Depending on the use of the product, place a small window or cotton cloth on both sides of the material.Then, the hot plate average molding temperature of the press is 150 ℃ and the unit pressure of the gauge is 50kg / cm ² . After that, the curing time according to the molded product is compressed and molded for about 5 to 10 minutes. As described above, the pressurized / molded product is rapidly cooled in a cold press to prevent deformation during cooling, and then cut into the dimensions of the product determined by the cutting blade. Shoe sole manufacturing method of natural materials with a ventilation function. The method of claim 1, wherein the vegetable fiber is extracted from rice straw, barley straw, straw, vine, manila hemp and made into fiber felt, mixed with both the thermosetting resin and carbon rubber resin 30% on both surfaces by spraying 30g / Shoe made of natural materials with ventilation function, which is applied by m ² unit and dried within 13%, and then compressed and molded by attaching small windows or cotton cloth to both sides, followed by cutting, inspection and refilling in the order of rapid cooling. Midsole manufacturing method.