KR20120006824A - Insole comprising white charcoal and manufacturing method thereof - Google Patents

Abstract

PURPOSE: An insole comprising white charcoal is provided to diversify use like charcoal pillow, charcoal bed, etc, and to remove foot smell by using charcoal which is environment-friendly material. CONSTITUTION: A manufacturing method of an insole comprising white charcoal comprises: a step of mixing a polymer resin, charcoal, a cross-linking agent, a bridge aid, an operations aid, a blowing agent, an auxiliary blowing agent, a whiteness enhancer and an antimicrobial agent; a step of manufacturing sheet by press-rolling the compound and controlling the thickness of the compound; a step of spreading adhesive on the bottom surface of a foam body, mixing with fabric, and then compressing the same; and a step of drying and cutting to the insole shape.

Description

Insole Comprising White Charcoal and Manufacturing Method Thereof}

The present invention relates to a shoe insole comprising a charcoal powder and a method for producing the same, comprising: preparing a compound by mixing charcoal, a polymer, a crosslinking agent, a crosslinking aid, a processing aid, a blowing agent, a foaming aid, a whiteness enhancer and an antimicrobial agent; Rolling the compound to adjust the thickness of the compound and make a sheet; Placing the sheet in a press machine and foaming the foam to obtain a foam; Applying an adhesive to the underside of the foam to encapsulate the foam and the fibers, and then compressing the adhesive; And a shoe insole comprising a charcoal powder prepared by the method and a method for manufacturing a shoe insole comprising charcoal powder comprising the steps of compressing the foam and the fibers, and then drying and compressing and cutting the shoe in the form of a shoe insole. It includes.

Insole is a cushioning material that cushions the foot and the shoe when it is moved to the outside while wearing shoes such as shoes, sneakers, hiking boots, etc. It is used for providing comfort, breathability, hygiene, and cleanliness. .

In Korea, conventional shoes were used to make shoes according to the materials used to make shoes. As an example of such shoes, rubber shoes made of rubber, leather shoes made of animal leather, wooden shoes made of wood, There were straw shoes made using straw.

Conventionally, the most commonly used shoes include leather shoes made of animal skins and straw shoes made of straw. The common people wore a lot of cheap and inexpensive sandals. However, the dominant people have advantages over the common people and their status, as well as the means and displays of sandals. Leather shoes made mainly from these expensive animal skins were worn. Like this, shoes were used as a means of indicating the status of people who wear shoes in addition to their original purpose.

Conventional footwear is not necessary for the existence of a shoe insole between the shoe and the sole because the sole of the human body is used as a means to prevent direct injury to the bare ground and prevent foot injury and to walk for a long time. There was little.

However, as science and technology has advanced, materials for making shoes have also been developed, and various shoes have been manufactured using various materials according to people, seasons, and / or uses. And / or seeking a means for cleanliness, a cushioning material between a person's sole and a shoe began to be provided and a concept of a shoe insole serving to cushion a shoe and a sole was provided inside the shoe.

The initial use of the shoe insole was intended to simply make the feet comfortable, but recently, in addition to this purpose, a means for preventing foot odor caused by a person wearing shoes for a long time, a height insole for appearance, etc. Shoe insoles are being researched and developed.

There are various techniques related to the conventional shoe insole, and as an example of the prior art for such shoe insole, the shoe insole infused with vinegar solution of Korean Utility Model Registration No. 20-0360886, the functional shoe insole of Korean Patent Registration No. 10-0633726, Korea Patent Registration 10-0854589 Shoe insole and manufacturing method thereof, Korean Utility Model Registration No. 20-0281300 Shoe insole, Korean Utility Model Registration No. 20-0433213 Shoe insole using non-woven fabric containing ocher powder, Korea Utility Model Registration 20-0332174 Ocher shoe insole, fragrance discharge that can replace fragrance of Korean Patent Publication No. 2010-0040402, shoe insole using deodorization and health promotion composition of Korean Patent Publication No. 2006-9059, fragrance discharge of Korean Utility Model Publication No. 2008-0001132 Means, such as a built-in shoe insole, but these prior art is different in technical configuration compared to the present invention.

Global is the temperature of the sea surface pollution is warming while the depth varies depending on CO ₂ emissions increase due to rapid industrialization. Hazardous gases from the necessities of life that are frequently encountered in our daily lives or odorous gases emitted from the human body can be unpleasant not only to ourselves but also to those around us. In particular, people who have to wear shoes for long periods of time or have a lot of exercise, especially those who have a bad smell in the summer, are not only concerned about themselves but also people around them. Therefore, the present invention is to solve the problems caused by the shoe insole.

The demand of consumers to use eco-friendly materials in daily household goods is increasing rapidly, and charcoal is used in the form of raw materials such as living room and bedroom, such as interior material or refrigerator deodorant, charcoal pillow, Its use is diversified in the form of primary processing such as charcoal beds. The present invention is to provide an eco-friendly shoe insole using charcoal, which is an eco-friendly adsorption material for people who have to work for a long period of time or have a lot of exercise, especially those who have a bad smell in summer.

Shoe insole of the present invention can provide a odor removal and fit according to the application of environmentally friendly materials. In addition, whether the quality standard is appropriate, hardness, tensile strength, tear strength, specific gravity, compressive permanent reduction, and thermal shrinkage are all excellent results.

1 is a manufacturing process diagram of the present invention.

The present invention shows a method for producing a shoe insole comprising charcoal powder.

The present invention comprises the steps of preparing a compound by mixing a polymer resin, charcoal, crosslinking agent, crosslinking aid, processing aid, foaming agent, foaming aid, whiteness enhancer and antibacterial agent; Rolling the compound to adjust the thickness of the compound and make a sheet; Placing the sheet in a press machine and foaming the foam to obtain a foam; Applying an adhesive to the underside of the foam to encapsulate the foam and the fibers, and then compressing the adhesive; And after the foam and the fiber is combined and then compressed and then compressed to dry and the shoe insole form comprising a step of producing a shoe insole comprising a charcoal powder, characterized in that it comprises a step (see Fig. 1).

1 to 5 parts by weight of charcoal, 0.5 to 1.0 parts by weight of crosslinking agent, 0.1 to 0.3 parts by weight of crosslinking aid, 0.5 to 1.5 parts by weight of processing aid, 4 to 6 parts by weight of blowing agent, and 4 to 5 parts by weight of polymer resin. Compounds may be prepared by mixing 5 parts by weight, 3-5 parts by weight of whiteness enhancer and 0.4-0.6 parts by weight of antimicrobial agent.

The polymer resin may be any one selected from ethylene vinyl acetate (EVA), an acrylic urethane series polymer.

The charcoal in the above may be any one selected from oak charcoal produced at a high temperature of 1,000 ℃ or more, bamboo charcoal produced at a high temperature of 1,000 ℃ or more.

The charcoal may be any one selected from oak charcoal produced at a high temperature of 1,000 to 1300 ° C and bamboo charcoal produced at a high temperature of 1,000 to 1300 ° C.

Charcoal in the above may be any one selected from oak charcoal produced at a high temperature of 1,200 ℃, bamboo charcoal produced at a high temperature of 1,200 ℃.

Charcoal in the above may be any one selected from oak charcoal produced at a high temperature of 1,100 ℃, bamboo charcoal produced at a high temperature of 1,100 ℃.

The fiber incorporated in the foam in the above may be any one selected from polyester, nylon, viscose rayon, polyurethane.

The antimicrobial agent may be any one or more selected from zinc (Zn) nano compounds, silver (Ag) nano compounds, acidic clay, green tea extracts.

The zinc (Zn) nano-compound and silver (Ag) -nanocomposite are powdered into nano-sizes by crushing zinc and silver with a grinder, respectively, preferably powdered into 10-100 nm in size. Can be used.

The green tea extract is used to extract the green tea in 5 to 20 times the weight of green tea in purified water to extract 10 to 30% of the volume of the first purified water at a temperature of 90 ~ 120 ℃ and then filtered, the green tea extract is Extraction and filtration may be used for 1 to 5 times.

Hereinafter will be described in more detail the contents of the present invention.

≪ Materials and methods >

1. Disclosure Charcoal

The charcoal used to make the shoe insole is made of traditional oak white charcoal carbonized at a high temperature of more than 1,000 ℃. Bamboo charcoal can also be used.

The specific surface area was analyzed by Quantachrome's Autosorb-1. About 0.1 g of charcoal powder was placed in a sample tube and degassed at 300 ° C. for 30 minutes to remove moisture or volatile impurities, and then analyzed. The sample tube was put in a thermal container containing liquid nitrogen to maintain -196 ℃. The cross-sectional area of one molecule of adsorbed gas N ₂ was calculated to be 0.162 n㎡ and the specific surface area was calculated by BET adsorption isotherm. The room temperature at the time of measurement was 27 degreeC, and the vacuum pressure -0.63 kPa atmospheric pressure 86.52 kPa. The specific surface area was 387 m 2 / g, similar to that of ordinary oak charcoal. In addition, the surface of charcoal powder was analyzed using SEM (JSM 5200, JEOL). The charcoal powder was evenly sprayed onto the SEM measuring stub attached to the double-sided carbon tape and pressed well so that the powder did not fall off. The sample charcoal powder was considered to be a well refined powder, and Au / Cd coating was not performed. The measurement was performed by making 2000 times, 5,000 times, and 10,000 times the acceleration voltage 10kv. For 10,000 times, three different parts were measured and these images were magnified 141% in the copier after printing. The enlarged charcoal particles were redrawn with a pen to clearly measure the diameter, and then the minimum diameter was measured using a vernier caliper (MITUTOYO). The particle size was divided into 32 equal parts between the maximum diameter and the minimum diameter [0.1 μm (0.05 to 0.14 μm) to 3.3 μm (3.25 to 3.34 μm). Particle diameters of 111, 130 and 95 charcoal powders were measured on three SEM images of charcoal powder magnified 10,000 times. The average particle diameters calculated from each SEM photograph were similar to each other and were integrated into one. That is, the particle size distribution of the average particle diameter and particle | grains was computed by combining all the above-mentioned particle diameters (111 + 130 + 95). The average particle diameter calculated based on the SEM photograph was 0.61 μm (610 nm), and the particle size showing the highest frequency was 0.5 μm.

2. Polymer resin

Ethylene Vinylacetate Polymer (EVA), a thermoplastic resin, is 2288grade of Dupont, USA in consideration of early foaming prevention and physical properties after molding. VA (Vinyl Acetate) content is 21%. EVA (Melting Index, Melting Index) 2 was used as the basic polymer. In addition, an urethane series acrylic resin can also be used.

3. Additive

3.1. Foaming aid

In order to improve the foaming efficiency by controlling the foaming temperature during foaming, ZnO of Dongjin Chemical was used.

3.2. Crosslinking aid

Akzo's Cyanurate crosslinking aid, TAC (Triallyl Cyanurate), was used to increase the crosslinking efficiency.

3.3. Whiteness Enhancer

Enhancer was used as a commercial industrial product without purification, R-101 (TiO ₂ ) of DuPont, USA was used to enhance the whiteness.

3.4. Processing aid

Stearic acid manufactured by LG Corp. was used to improve processability.

3.5. Crosslinking agent

99.9% DCP (Dicumyl Peroxide), which is known to have excellent crosslinking efficiency, was used for crosslinking the foam.

3.6. blowing agent

For foaming the foam, kumyang JTR grade blowing agent was used.

3.7. Antibacterial agents

Inorganic antibiotics include Zn nano compounds, Ag nano compounds or acidic clay, and any one or more selected from natural green tea extracts can be used. great.

4. Fabric for cloth

Fibers incorporated into the foam can be used fibers such as polyester, nylon, viscose rayon, polyurethane, etc. In the present invention, polyester short fibers were commercially available (KOLON).

<Manufacture of shoe insoles>

The shoe insole manufacturing process with charcoal blends the charcoal and polymer polymer resin according to a predetermined formulation, and measures compounding by measuring additives such as crosslinking agent, crosslinking aid, processing aid, whiteness enhancer, foaming agent and foaming aid. Do the formulation work for. Roll work to control the thickness of the compound and press the compound to skive the foam. Press process and insole to make insole form through pressing process and hot air drying to improve adhesion between foam and fiber through the process of applying fiber to the foam through adhesive roll process on the bottom of foam for adhesion between foam and fiber. In order to manufacture the insole form, proceed with the iron cutting process.

The method for producing a shoe insole containing charcoal powder of the present invention was carried out under various conditions. In order to achieve the object of the present invention, it is to provide a method for producing a shoe insole containing charcoal powder under the above-mentioned conditions. desirable.

The present invention includes a shoe insole comprising charcoal powder prepared by the above-mentioned method.

The present invention includes a shoe insole compound composition for the production of a shoe insole comprising a charcoal powder prepared by the above-mentioned method.

The compound composition for shoe insole is 1 to 5 parts by weight of charcoal, 0.5 to 1.0 parts by weight of crosslinking agent, 0.1 to 0.3 parts by weight of crosslinking aid, 0.5 to 1.5 parts by weight of processing aid, foaming agent 4 to 6 parts by weight based on 100 parts by weight of polymer resin. Part, 4 to 5 parts by weight of foaming aid, 3 to 5 parts by weight of whiteness enhancer and 0.4 to 0.6 parts by weight of antibacterial agent, and each of the components in the shoe insole compound composition has already been produced when manufacturing shoe insoles containing charcoal powder. As mentioned above, detailed descriptions thereof will be omitted.

In the shoe insole compound composition, the antimicrobial agent may use any one or more selected from zinc (Zn) nano compounds, silver (Ag) nano compounds, acidic clay, green tea extracts.

Hereinafter, the present invention will be described in detail with reference to Examples and Test Examples. However, these are for the purpose of illustrating the present invention in more detail, and the scope of the present invention is not limited thereto.

<Examples 1 to 3>

Shoe insole foam formulation is shown in Table 1, the content of each compounding agent is mixed on the basis of 100 parts by weight of EVA (Ethylene Vinylacetate), a polymer resin, and each shoe insole is manufactured using the following method of manufacturing the shoe insole. It was.

In particular, it was produced by dividing the control group without charcoal into four kinds of products in which 1 part by weight of charcoal (Example 1), 3 parts by weight of charcoal (Example 2) and 5 parts by weight of charcoal (Example 3) were mixed. .

<Method of manufacturing shoe insole>

The shoe insole manufacturing process with charcoal blends the charcoal and polymer polymer resin according to a predetermined formulation, and measures compounding by measuring additives such as crosslinking agent, crosslinking aid, processing aid, whiteness enhancer, foaming agent and foaming aid. Formulation work was carried out. Rolling was performed to control the thickness of the compound, and the foam was skived by pressing the compound. Press process and insole to make insole form through pressing process and hot air drying to improve adhesion between foam and fiber through the process of applying fiber to the foam through adhesive roll process on the bottom of foam for adhesion between foam and fiber. Insole) form was manufactured in the order of iron cutting (cutting) process.

Shoe insole foam compounding ratio (unit: weight part) Compounding agent Formulation Properties Compounding cost Remarks Polymer resin Ethylene Vinylacetate 100 Dupont Corporation 2288grade
(VA content 21%, MI 2.2) Foaming aid ZnO 4.5 Dongjin Chemical Antibacterial agents Acid White Soil, Green Tea Extract * 0.5 OneCNC Crosslinking aid TAC (Cyanurate) 0.2 Akzo Whiteness Enhancer R-101 (TiO ₂ ) 4.0 Dupont Corporation Processing aid stearic acid 1.0 LG Crosslinking agent DCP 0.7 99.9% blowing agent JTR blowing agent 5.0 Geumyang Co., Ltd. Charcoal ** White charcoal 0, 1, 3, 5 Traditional Oak White Tan Powder

* Green tea extract in Table 1 above was used to extract green tea in purified water of 10 times the weight of the green tea to 15% of the volume of the first purified water at a temperature of 110 ℃ and then filtered.

** Charcoal in the Table 1 used oak white charcoal powder produced at a high temperature of 1,100 ℃.

<Test Example 1>; Physical Characteristics

The physical properties of charcoal content were measured by hardness, tensile strength, tear strength, elongation, specific gravity, compressive permanent shrinkage, and thermal shrinkage in accordance with ASTM (certified by the American Society for Testing and Materials) and NIKE. Hardness represents the firmness and softness of the object, and ASKER C-Type hardness tester was used to measure the hardness of the prepared test specimen. Tensile strength is the force required when the rubber specimen is stretched by extending the rubber specimen in a direction perpendicular to the roll axis direction. The unit is expressed as kgf / ㎠. Elongation is the percentage of the length of the rubber specimen stretched in the direction perpendicular to the roll axis direction, the length extending from the original length to the original length divided by the original length, in%. Tear strength is the force entered when the specimen is torn by tearing the specimen in a direction parallel to the roll axis. The unit is expressed in kgf / cm. Specific gravity is expressed as mass ratio per volume, expressed in g / dl. Compression test refers to the rate of change of the reduced thickness from the initial thickness after the specimen has been compressed to a certain thickness for a certain period of time and then removed from external forces and left for a specified time. After applying a force to a specimen at a given time and at a certain temperature, the strain remaining when the force is removed is called the permanent compression rate. In general, it is an important test method for compressive modulus, the rate of recovery when the force is removed, and the evaluation of the physical properties of the product. The standard is based on KS M 6518K, ASTM M D 395, BS 903. The heat shrinkage rate is expressed as a percentage of shrinkage with respect to a certain temperature.

Physical Properties of Shoe Insole by Charcoal Content

In order to measure the properties of the charcoal content, prepared by control (no char), 1 part by weight of charcoal (Example 1), 3 parts by weight of charcoal (Example 2), 5 parts by weight of charcoal (Example 3), ASTM (American Materials Test) The adequacy of the quality standard was examined by measuring the physical properties according to the certification of the Society) and NIKE's test method (see Table 2). Hardness, tensile strength, tear strength, elongation, specific gravity, compressive permanent shrinkage, and heat shrinkage were measured for 7 items. Charcoal property was the best in 3 parts by weight of charcoal, and when 5 parts by weight of charcoal was added, it was included in the specification such as elongation rate was increased. Compression decreases significantly. Therefore, up to 5 parts by weight of charcoal was found to be suitable for the physical properties and quality standards in the manufacture of shoe insoles. However, if the content of charcoal is more than 5 parts by weight, the addition of crosslinking agent, crosslinking aid, foaming agent and foaming aid It is necessary to study.

Measurement results of shoe insole by charcoal content (NIKE company's standard) Test Items unit result Test Methods Control 1 part by weight of charcoal Charcoal 3 parts by weight 5 parts by weight of charcoal standard Hardness (C-Type) Scale 49 ± 1 49 ± 1 48 ± 1 45 ± 1 45 ± 3 ASTM D 2240 The tensile strength kgf / cm ² 30 32 31 23 14 ASTM D 412 Elongation rate % 250 263 270 358 More than 200 ASTM D 412 Phosphorus strength kgf / cm 9.0 9.3 10.0 9.3 6.0 and above ASTM D 624 importance g / cc 0.19 0.19 0.19 0.19 0.18 ± 0.02 ASTM D 297 Compression
Rhythm % 51.7 57.6 63.6 71.6 80 or less 50 ± 1 ℃, 6 hours,
50% compression, NIKE 16 Heat shrinkage % 1.3 1.3 1.1 1.1 2.0 or less Aging Oven
70 ℃, 40 minutes, NIKE 1

<Test Example 2>; Odor and harmful gas measurement

The evaluation of removal efficiency before and after charcoal treatment was carried out using the bag method applied by domestic automobile manufacturers. The performance evaluation of odor intensity by sensory method of gas generated through pretreatment was "odor process test. The method was used to evaluate the odor of complex odors. The individual components and TVOC emissions were analyzed by the method of evaluating volatile organic compounds of indoor air quality in apartments and multi-use facilities.

<Measurement by 6L bag method>

The sample pretreatment method using the bag is a method used to check the odor intensity and the amount of volatile organic compounds emitted from the parts in the car manufacturers in Korea and Japan to proceed as follows. Sample pretreatment conditions are shown in Table 3, and were processed in the following order. 1) Put a sample (left foot, right foot) into a 6ℓ bag and seal it. 2) Repeatedly inject 3ℓ of high purity nitrogen gas into 6ℓ bag twice to clean the inside which might be contaminated during the initial manufacturing process. 3) Heat in an oven at 80 ° C. for 2 hours. 4) Use the gas obtained in 3) as the instrument analysis and sensory evaluation sample.

Sample preparation condition Sample types Sample application amount Bag capacity
(ℓ) Nitrogen injection amount (ℓ) Heating temperature
(℃) Heating time
(hr) Shoe insole 1 left and 1 right 6 3 80 2

Sensory methods are used to measure complex malodorous substances in which gaseous substances stimulate the sense of smell and cause discomfort and aversion. Sensory methods have the advantage of being able to be evaluated in a short time compared to instrumental methods, but because the sensitivity is different depending on the type of odor for each judge who participates in the odor test and the maintenance of the same state is difficult, the error of the result for the same sample may be large. There is a disadvantage.

The gas generated using the bag method of individual volatile organic compounds was concentrated and thermally desorbed using GC / MSD-TD analysis equipment, column introduction, and peaks were identified for each single component by a detector. And quantitative analysis. The concentration calculation process for the components detected in the sample was calculated by dividing the calibration curve through the detection area identified according to the standard gas concentration analysis for each component, and dividing the slope identified through the calibration curve by the area detected in the sample. The instrument analysis conditions are shown in Table 4.

Instrument analysis condition TD  model name  Perkin-Elmer Turbo Matrix 350  Low temperature concentrator  Split Ratio 10: 1, -30 ℃ → 40 ℃ / s → 300 ℃ (3min.)  Thermal Desorption Device  Splitless mode, Flow: 40ml / min, 280 ℃ (10min.) GC / MS  model name  Varian GC / MS-MS (Varian 1200L)  column  CP-SIL SCB (60m Length, 0.32mm I.D., Film 3㎛)  Carrier Gas and Flow Rate  He (99.999), 1.2 ml / min.  Oven temperature  50 ° C. (5 min) → 5 ° C./min. → 150 ° C (20min) → 10 ° C / min → 220 ° C (5min)  Mode  Electron ionization (EI)  Electron energy  70 eV  Detection Mode  TIC (Scan), m / z: 20 to 350

<Adsorption Characteristics of Odor and Hazardous Gases Using 6L Bag Method>

In order to check the performance before and after the charcoal treatment on the shoe insole, the pretreatment process using the bag method on the sample after the treatment, 1 part by weight of charcoal, 3 parts by weight of charcoal, 5 parts by weight of charcoal (80 ℃, Gas was collected by heating for 2 hours, and the organoleptic method was performed on these gases. As a result of evaluation of odor intensity using air dilution method, it was found that 300 times of the product before treatment, 144 times of charcoal treatment part 144 times, 3 times charcoal treatment 100 times charcoal and 100 times charcoal treatment 100 times charcoal after treatment with charcoal. . The odor reduction efficiency of the product after treatment was 52.0% by 1 part by weight of charcoal, 66.7% by 3 parts by weight of charcoal and 5 parts by weight of charcoal.

Comparison of effects before and after odor intensity treatment according to sensory insole air dilution sensory evaluation Assessment Methods Dilution factor (times) Odor Reduction Effect (%) Before processing 1 part by weight of charcoal Charcoal 3 parts by weight 5 parts by weight of charcoal Before processing 1 part by weight of charcoal Charcoal 3 parts by weight 5 parts by weight of charcoal Sensory evaluation 300 144 100 100 0 52.0 66.7 66.7

As in the sensory evaluation method, before processing, gas is collected through a pretreatment process (80 ° C., heating for 2 hours) using a bag method on a sample after processing 1 part by weight of charcoal, 3 parts by weight of charcoal and 5 parts by weight of charcoal. And the instrumental analysis was performed about these gases. The total volatile organic compound (TVOC) evaluation resulted in 791.8 ppb of existing products, 743.0 ppb of charcoal, 421.2 ppb of charcoal, and 231.5 ppb of charcoal 5 by weight. The odor reduction efficiency of charcoal treated products was 6.2% at 1 part by weight of charcoal, 46.8% at 3 parts by weight of charcoal, and 70.8% at 5 parts by weight of charcoal. In particular, as a result of evaluation of acetophenone and 2-phenyl-1,2-propanediol as the main odor components of shoe insole itself, acetophenone was 98.7 ppb in the existing product, and charcoal 1 for the improved product treated with charcoal 1 It was confirmed by the weight part 103.0 ppb, the charcoal 3 weight part 47.0 ppb, and the charcoal 5 weight part 27.4 ppb. The odor reduction efficiency of charcoal treated products was -4.4% by 1 part by weight of charcoal, 52.4% by 3 parts by weight of charcoal, and 72.3% by 5 parts by weight of charcoal. In the case of 2-phenyl-1,2-propanediol, 326.5 ppb of the existing products, charcoal treated products, 1 part by weight of 271.0 ppb, 3 parts by weight of charcoal 166.1 ppb, 5 parts by weight of 127.4 ppb. The odor reduction efficiency of charcoal treated products was 17.0% by 1 part by weight of charcoal, 49.1% by 3 parts by weight of charcoal, and 61.0% by 5 parts by weight of charcoal.

Comparison of Detection Concentration and Reduction Efficiency of TVOC Detection Components in Shoe Insoles before and after Charcoal Treatment Detection components Detection concentration (ppb) Reduction Efficiency (%) Before processing 1 part by weight of charcoal Charcoal 3 parts by weight 5 parts by weight of charcoal Before processing 1 part by weight of charcoal Charcoal 3 parts by weight 5 parts by weight of charcoal Acetone 2.6 0.0 2.8 2.0 0 100.0 -6.4 25.4 Acetic acid 14.4 4.3 10.2 4.6 0 70.0 29.3 67.8 Ethyl acetate 12.0 0.0 12.6 2.3 0 100.0 -4.8 81.1 1,2,3-Trimethyl cyclopentane 3.2 3.1 1.0 0.0 0 2.1 68.7 100.0 Toluene 84.6 60.6 16.4 5.1 0 28.4 80.7 94.0 2-Ethyl-1-pentanol 5.3 2.0 0.9 0.0 0 61.9 83.8 100.0 1-Ethyl-2-methyl cyclopentane 13.4 11.1 2.8 0.0 0 16.7 79.2 100.0 1,1,3-Trimethyl cyclohexane 3.9 3.8 1.8 0.0 0 2.8 52.5 100.0 Ethyl benzene 2.9 2.5 1.1 0.3 0 13.1 61.4 89.3 m, p-Xylene 8.0 6.3 3.5 1.0 0 21.5 55.9 88.1 o-Xylene 2.8 2.2 1.2 0.4 0 21.2 56.0 84.9 Iospropyl benzene 12.0 11.5 7.3 3.0 0 4.6 39.4 75.4 2-Nonen-1-ol 5.4 4.9 6.2 2.1 0 8.8 -14.9 62.1 2,2,5-Trimethyl hexane 7.8 5.4 2.7 1.4 0 30.3 65.5 81.8 Acetophenone 98.7 103.0 47.0 27.4 0 -4.4 52.4 72.3 2-Phenyl-1,2-propanediol 326.5 271.0 166.1 127.4 0 17.0 49.1 61.0 4-Ethyl octane 13.8 8.3 1.5 0.7 0 39.9 88.8 94.9 TVOC (C6 to C16) 791.8 743.0 421.2 231.5 0 6.2 46.8 70.8

<Measurement by 20ℓ small chamber method>

In order to compare the removal performance of individual volatile organic compounds and total volatile organic compounds released from charcoal materials before and after charcoal treatment, 20L small chamber method, which is currently used as emission test standard for building materials, was evaluated. The small chamber method is a method of measuring the amount of air discharged per unit area of the building material under test by obtaining the air concentration in the chamber, the accumulated flow rate of the air passing through the chamber, and the surface area of the test piece. Evaluation progress is as follows. 1) Attach samples (left foot, right foot) to two sample holders, respectively. 2) Place the holder with the sample inside the 20ℓ small chamber and seal with the cover. 3) The inside of the chamber is controlled at 25 ° C. and 50% of environment, and gas is flowed at 167 ml / min. 4) After the elapsed time of 1 day, 3 days, 5 days, 7 days, 14 days, 21 days, 28 days, the released gas is adsorbed to the Tenax-TA adsorption tube and used as the sample for analysis.

The individual component and TVOC evaluation method separates the gas adsorbed to the Tenax-TA adsorption tube into the GC through the thermal desorption process using the GC / MSD-TD analysis equipment and detects the separated gas by the MSD. It was confirmed. After the charcoal treatment, we compared the volatile organic compounds and odors for the materials with the TVOC detected between the individual components and Hexane to Hexadecane. The emission formula is as follows.

A: surface area of the test piece (㎡)

Ct: concentration of volatile organic compounds in the emission test chamber at time t (mg / ㎥)

Ctbt: background concentration at time t (mg / ㎥)

EFa: emission amount per unit area (mg / ㎡-h)

L: Sample load rate (㎡ / ㎥)

n: Ventilation frequency (times / h)

Q: Ventilation amount of the discharge test chamber (㎥ / h)

q: ventilation amount per unit area (㎥ / ㎡-h)

t: time elapsed since start of test (hours or days)

V: Volume of discharge test chamber (㎥)

<Adsorption Characteristics of Odor and Hazardous Gases Using Small 20ℓ Chamber Method>

In order to compare the amount of release over time of each product, the insole was equipped with one sample before treatment, one part by weight of charcoal, three parts by weight of charcoal and five parts by weight of charcoal. After 1, 3, 5, 7, 14, 21, 28 days, the gas is adsorbed into the Tenax-TA adsorption tube and the GC / MS-TD is used for individual components and TVOC. The amount of emission was determined and the comparison of the amount of each component and the product before and after TVOC improvement over time of Table 7 and Table 8, respectively.

Total volatile organic compound (TVOC) emission using the instrumental analysis was 1) 1.784mg / ㎡ · h, 1.228mg / in the existing products after 1, 3, 5, 7, 14 and 21 days 28 days It showed a tendency to decrease to m 2 · h, 1.099 mg / m 2 · h, 0.890 mg / m 2 · h, 0.661 mg / m 2 · h, 0.598 mg / m 2 · h, 0.423 mg / m 2 · h. 2) For 1 part by weight of charcoal treated products, 1.531 mg / m 2 · h, 1.072 mg / m 2 · h, 1.049 mg / m 2 after 1 day, 3 days, 5 days, 7 days, 14 days, 21 days and 28 days h, 0.920 mg / m 2 · h, 0.536 mg / m 2 · h, 0.533 mg / m 2 · h, and 0.393 mg / m 2 · h. 3) Charcoal 3 parts by weight 1.624 mg / m 2 · h, 1.189 mg / m 2 · h, 1.089 mg / m 2 · after 1, 3, 5, 7, 14 and 21 days after 28 days h, 0.941 mg / m 2 · h, 0.570 mg / m 2 · h, 0.589 mg / m 2 · h, 0.424 mg / m 2 · h. 4) In case of 5 parts by weight of charcoal treated products, 1.419 mg / m 2 · h, 1.097 mg / m 2 · h, 0.947 mg / m 2 after 1 day, 3 days, 5 days, 7 days, 14 days, 21 days and 28 days h, 0.852 mg / m 2 · h, 0.491 mg / m 2 · h, 0.499 mg / m 2 · h, and 0.338 mg / m 2 · h tended to decrease (see Table 7, Table 8).

Meanwhile, as a result of evaluation of acetophenone and 2-phenyl-1,2-propanediol as the main odor components of shoe insole itself, 1) 1, 3, 5, 7 for acetophenone in the existing product 0.523 mg / m 2 · h, 0.302 mg / m 2 · h, 0.198 mg / m 2 · h, 0.150 mg / m 2 · h, 0.111 mg / m 2 · h, 0.087 mg / m 2 H, 0.049 mg / m 2 · h, 1.007 mg / m 2 · h after 2-day 1, 3, 5, 7, 14, 21, 28 days for 2-phenyl-1,2-propanediol , 0.796 mg / m 2 · h, 0.761 mg / m 2 · h, 0.633 mg / m 2 · h, 0.453 mg / m 2 · h, 0.452 mg / m 2 · h and 0.326 mg / m 2 · h. 2) In the result of 1 part by weight of charcoal, 0.450 mg / m 2 · h, 0.262 mg / m 2 · h after acetophenone after 1, 3, 5, 7, 14 and 21 days 28 days; 0.186 mg / m 2 · h, 0.165 mg / m 2 · h, 0.087 mg / m 2 · h, 0.071 mg / m 2 · h, 0.042 mg / m 2 · h, 1 day for 2-phenyl-1,2-propanediol , 3 days, 5 days, 7 days, 14 days, 21 days after 28 days 0.904 mg / m 2 · h, 0.731 mg / m 2 · h, 0.709 mg / m 2 · h, 0.633 mg / m 2 · h, 0.395 mg / It showed a tendency to decrease to m 2 · h, 0.407 mg / m 2 · h, 0.315 mg / m 2 · h. 3) In the results of 3 parts by weight of charcoal, 0.462 mg / m 2 · h, 0.285 mg / m 2 · h after acetophenone after 1, 3, 5, 7, 14 and 21 days 28 days; 0.208 mg / m 2 · h, 0.171 mg / m 2 · h, 0.098 mg / m 2 · h, 0.084 mg / m 2 · h, 0.048 mg / m 2 · h, 1 day for 2-phenyl-1,2-propanediol 0.972 mg / m 2 · h, 0.802 mg / m 2 · h, 0.791 mg / m 2 · h, 0.690 mg / m 2 · h, 0.417 mg / after 3 days, 5 days, 7 days, 14 days, 21 days 28 days It showed a tendency to decrease to m 2 · h, 0.450 mg / m 2 · h and 0.341 mg / m 2 · h. 4) As for the results of 5 parts by weight of charcoal, 0.389 mg / m 2 · h, 0.251 mg / m 2 · h after acetophenone after 1, 3, 5, 7, 14 and 21 days 28 days; 0.165 mg / m 2 · h, 0.136 mg / m 2 · h, 0.070 mg / m 2 · h, 0.057 mg / m 2 · h, 0.030 mg / m 2 · h, 1 day for 2-phenyl-1,2-propanediol 0.885 mg / m 2 · h, 0.758 mg / m 2 · h, 0.681 mg / m 2 · h, 0.635 mg / m 2 · h, 0.380 mg / after 3 days, 5 days, 7 days, 14 days, 21 days 28 days It showed a tendency to decrease to m 2 · h, 0.402 mg / m 2 · h and 0.285 mg / m 2 · h (see Table 7, Table 8).

In order to check the adsorption performance of charcoal treated shoe insoles, a 20 liter small chamber was equipped with a pre-treated product and a sample containing 5 parts by weight of charcoal, and 12ppb butylaldehyde standard gas was flowed at 167ml / min. After 7 days, the reaction was adsorbed onto the DNPH cartridge, extracted with acetonitrile, and the adsorption performance of the product before treatment was evaluated using HPLC. As a result, 1, 2, 3, 4, 5 After 1, 6, and 7 days, respectively, the levels of 10.8 ppb, 10.2 ppb, 9.7 ppb, 10.1 ppb, 9.9 ppb, 11.2 ppb, and 10.3 ppb, respectively, showed an adsorption efficiency of 6.7% to 19.2% for 7 days. Meanwhile, as a result of confirming the adsorption performance evaluation of the product over time after 5 parts by weight of charcoal applied, 6.3 ppb, 6.7 ppb, 6.1 after 1 day, 2 days, 3 days, 4 days, 5 days, 6 days, 7 days respectively At levels of ppb, 5.7 ppb, 6.3 ppb, 6.7 ppb and 6.5 ppb, adsorption efficiencies of 44.2% to 52.5% were shown for 7 days.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. It will be understood that the present invention can be changed.

The present invention shows excellent results in hardness, tensile strength, tear strength, specific gravity, compressive permanent reduction, and thermal contraction rate even in the case of applying the eco-friendly material of white coal, even in the appropriateness of the quality standard. In addition, there is an industrial applicability because it increases the odor removal and fit.

Claims (9)

Preparing a compound by mixing a polymer resin, charcoal, a crosslinking agent, a crosslinking aid, a processing aid, a foaming agent, a foaming aid, a whiteness enhancer and an antimicrobial agent;
Rolling the compound to adjust the thickness of the compound and make a sheet;
Placing the sheet in a press machine and foaming the foam to obtain a foam;
Applying an adhesive to the underside of the foam to encapsulate the foam and the fibers, and then compressing the adhesive; And
Method of manufacturing a shoe insole comprising charcoal powder, characterized in that it comprises a step of compressing the foam and the fiber and then dried and compressed and cut into a shoe insole form According to claim 1, 1 to 5 parts by weight of charcoal, 0.5 to 1.0 parts by weight of crosslinking agent, 0.1 to 0.3 parts by weight of crosslinking aid, 0.5 to 1.5 parts by weight of processing aid, 4 to 6 parts by weight of foaming agent, 4-5 parts by weight of foaming aid, 3-5 parts by weight of whiteness enhancer and 0.4-0.6 parts by weight of an antimicrobial agent to produce a compound, characterized in that for producing a shoe insole containing charcoal powder The method of claim 1, wherein the polymer resin is any one selected from among ethylene vinyl acetate (EVA) and acryl urethane-based polymers. The method of claim 1, wherein the charcoal is a charcoal powder, characterized in that the oak charcoal produced at a high temperature of 1,000 ℃ or more. The method of claim 1, wherein the fiber incorporated in the foam is any one selected from polyester, nylon, viscose rayon, polyurethane. The method of claim 1, wherein the antimicrobial agent is any one or more selected from zinc (Zn) nano compounds, silver (Ag) nano compounds, acid clay, green tea extract. Shoe insole comprising charcoal powder prepared by the method of any one of claims 1 to 6 1 to 5 parts by weight of charcoal, 0.5 to 1.0 parts by weight of crosslinking agent, 0.1 to 0.3 parts by weight of crosslinking aid, 0.5 to 1.5 parts by weight of processing aid, 4 to 6 parts by weight of blowing agent, 4 to 5 parts by weight of foaming aid Part, compound composition for shoes insole comprising 3 to 5 parts by weight of whiteness enhancer and 0.4 to 0.6 parts by weight of antibacterial agent The compound according to claim 8, wherein the antimicrobial agent is any one or more selected from zinc (Zn) nano compounds, silver (Ag) nano compounds, acid clay, green tea extracts.

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