KR102081508B1 - Natural fiber-based leather and preparing method thereof - Google Patents

Abstract

The present invention relates to a natural fiber-based leather material and a method for manufacturing the same, and more specifically, a natural material-based base including one or more selected from the group consisting of cotton, hemp, ramie, Hanji fiber and wood fiber. fiber; And seaweed extracts; It comprises a, natural fiber-based leather and a method for producing the same.

Description

Natural fiber-based leather and its manufacturing method {NATURAL FIBER-BASED LEATHER AND PREPARING METHOD THEREOF}

The present invention relates to a natural fiber-based leather material and a manufacturing method thereof.

Synthetic leather (synthetic leather), similar to natural leather, can provide soft texture and unique appearance and flexibility and extensibility not expected from natural leather, so shoes, clothing, gloves, sundries, furniture, interior and interior materials and automotive interior materials It is used as a material to replace natural leather in various fields such as.

Artificial leather is manufactured by using polyurethane, silicone, polyvinyl chloride (PVC), etc. as a polymer raw material, and is cheaper than natural leather, and thus, leather products using artificial leather have been actively developed.

Synthetic polymers such as polyurethane, polyvinyl chloride (PVC), organic solvents, and the like are used as adhesives, coating agents, and impregnation agents in the manufacture of conventional artificial leather. For example, a coating liquid containing polyurethane, dimethylformamide, methyl ethyl ketone, and a pigment in an appropriate ratio is coated on at least one or more release papers, and then the release paper is passed through a dryer to volatilize a solvent to form a film. Next, after coating it with a coating solution containing a polyurethane adhesive, a curing agent, a curing accelerator, dimethylformamide, and methyl ethyl ketone in an appropriate ratio, thereafter, the fabric is adhered with an adhesive and sufficiently cured, and then the release paper is peeled off to remove the polyurethane. Manufactures artificial leather. Artificial leather using such adhesives, organic solvents, environmental problems and human health problems during manufacturing and disposal.

Recently, the manufacturing technology of artificial leather using synthetic fibers such as polyethylene terephthalate fiber and polyamide fiber has been studied. However, satisfactory results in processing properties and durability, such as physical properties, painting, etc., are suitable for various synthetic leather applications such as interior interior materials or sundries. There is a problem that the implementation of artificial leather having a difficult.

The present invention can provide a natural fiber-based leather material that is environmentally friendly, and excellent in antimicrobial, durability, breathability, color expression, etc. by applying a natural material-based fiber.

The present invention provides a method for producing a natural fiber-based leather material of the present invention.

The problem to be solved by the present invention is not limited to the above-mentioned problem, another task that is not mentioned will be clearly understood by those skilled in the art from the following description.

According to one embodiment of the invention, the base material based on natural materials including at least one selected from the group consisting of cotton, hemp, ramie, Hanji fiber and wood fiber; And seaweed extracts; It comprises a, natural fiber-based leather.

According to an embodiment of the present invention, the wood fiber, pineapple leaf fiber, bamboo fiber, banana fiber, corn fiber, coconut fiber and palm tree fiber comprises one or more selected from the group consisting of, the base fiber, It may be that it further comprises one or more selected from the group consisting of a dog and a mohair.

According to one embodiment of the present invention, the thickness of the base fiber may be 8 to 12 numbers.

According to an embodiment of the present invention, the seaweed extract is a polysaccharide material, the polysaccharide material may be one or more selected from the group consisting of radish, starch, agar, carrageenan, alginic acid and alginate.

According to one embodiment of the invention, it may be to further include a latex.

According to one embodiment of the invention, the base fiber may include one or more selected from the group consisting of fabrics, fabrics and nonwovens.

According to an embodiment of the present invention, the seaweed extract may be penetrated into the natural fiber-based leather.

According to one embodiment of the present invention, the seaweed extract may be included in 1% by volume to 90% by volume relative to the total volume of the natural fiber composite.

According to one embodiment of the invention, preparing a base fiber based on the natural material; Pretreating the base fiber with moisture; Preparing a pressure-sensitive adhesive solution; And treating the pressure sensitive adhesive solution to a base fiber; It includes, the base fiber, at least one natural material selected from the group consisting of cotton, hemp, ramie, Hanji fiber and wood fiber, wherein the pressure-sensitive adhesive solution, seaweed extract, natural fiber-based It relates to a method for producing leather.

According to an embodiment of the present invention, the pressure-sensitive adhesive solution may be sprayed on the base fiber or immersed in the base fiber in the pressure-sensitive adhesive solution.

According to one embodiment of the invention, the step of treating the inorganic salt solution to the base fiber treated with the pressure-sensitive adhesive solution; It may be to include more.

According to an embodiment of the present invention, the inorganic salt may be one or more selected from the group consisting of halogen salts, acetates, phosphates, sulfates and nitrates of calcium, potassium, or sodium.

According to an embodiment of the present invention, the pressure-sensitive adhesive solution, seaweed extract, latex, solvents and additives, the additives, dyes, antimicrobial substances, herbal extracts and wood herb solution selected from the group consisting of It may be.

According to an embodiment of the present invention, the preparing of the pressure-sensitive adhesive solution may include gelling seaweed extract; Adding latex to the gelled seaweed extract; And diluting by adding a solvent after adding the latex; It may be to include.

According to an embodiment of the present invention, the step of gelling the seaweed extract, gelatinized by mixing the seaweed extract and water, the mixing ratio of the seaweed extract to water, 1:10 to 1: 500 (mass ratio), the latex The adding step may include adding a mixed solution of latex and water, and the mixing ratio of latex to water in the mixed solution may be 1: 1 to 1:10 (mass ratio).

According to one embodiment of the present invention, the mixing ratio of the mixed solution to the gelled seaweed extract in the step of adding the latex may be from 1: 1 to 100: 1 (mass ratio).

According to one embodiment of the invention, the step of treating the pressure-sensitive adhesive solution may be to induce the penetration of the pressure-sensitive adhesive solution by applying a pressure after the injection or immersion of the pressure-sensitive adhesive solution.

According to one embodiment of the invention, the step of heat treatment for at least 1 second at room temperature to 100 ℃; And defoaming; It may be to include more.

According to one embodiment of the present invention, the preparing of the base fiber may include preparing a natural fiber-based substrate including at least one of a woven fabric, a fabric, and a nonwoven fabric made of the base fiber.

The present invention, by applying the seaweed extract as an internal adhesive, it is possible to provide a natural fiber-based leather with improved durability less damage such as cracks in the processing, storage and use environment.

The present invention can provide a natural fiber-based leather material with less generation of harmful substances in the manufacturing process and disposal, and safe for the human body.

The present invention can provide a natural fiber-based leather material that can be applied as a substitute material of natural and artificial leather with excellent touch strength, volume, and the like, and excellent tensile strength, air permeability, and friction fastness. . In addition, the natural fiber-based leather material of the present invention is excellent in processability and durability, it can be applied to various applications such as fabrics, fabrics, shoes, clothing, gloves, sundries, furniture, interior interior materials and automotive interior materials.

1 is a flowchart illustrating a manufacturing process of a natural fiber-based leather material according to the present invention according to an embodiment of the present invention.
Figure 2 is a photograph of the finished product of the natural fiber-based leather material implemented in various colors, according to an embodiment of the present invention.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. However, various changes may be made to the embodiments so that the scope of the patent application is not limited or limited by these embodiments. It is to be understood that all changes, equivalents, and substitutes for the embodiments are included in the scope of rights.

The terminology used herein is for the purpose of description and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

In addition, in the description with reference to the accompanying drawings, the same components will be given the same reference numerals regardless of the reference numerals and duplicate description thereof will be omitted. In the following description of the embodiment, if it is determined that the detailed description of the related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

The present invention is to provide a natural fiber-based leather, according to an embodiment of the present invention, the natural fiber-based leather, natural material based base fiber; And seaweed extract; may include.

According to an embodiment of the present invention, the base material based on the natural material is environmentally friendly, and can provide breathability, fragrance, and the like. The base material based on the natural material may include vegetable fibers, for example, the vegetable fibers may include one or more selected from the group consisting of cotton, hemp, ramie, Hanji yarn fibers and wood fibers. have. The hemp may be flax, jute, hemp, kenaf or the like, and the wood fiber may be pineapple leaf fiber, bamboo fiber, banana fiber, corn fiber, coconut fiber, palm fiber, or the like, but is not limited thereto.

The base material based on the natural material may further include animal fibers. For example, the animal fibers may include one or more selected from the group consisting of wool, silk and mohair, but is not limited thereto.

The base fiber based on the natural material may include at least one of long fibers, brisket fibers, and short fibers, and the thickness of the base fibers may be 8 to 12. When the thickness of the base fiber is included in the above range, it is possible to provide a leather material having excellent mechanical properties by increasing the penetration rate of the seaweed extract in the natural fiber-based leather material.

The base fiber may be included as a fiber substrate including one or more selected from the group consisting of fabrics, fabrics, and nonwovens. Seaweed extract and the like can be penetrated into the fiber substrate to strongly adhere the base fibers and improve mechanical properties. The thickness of the said fiber base material is 1 micrometer or more; At least 100 μm; 100 μm to 100 mm; Alternatively 0.1 mm to 20 mm; Can be.

According to an embodiment of the present invention, the seaweed extract may penetrate into the natural fiber-based leather material and act as an adhesive to connect the fibers, and maintain proper viscosity to improve durability in post-processing processes such as dyeing. It is possible to prevent the occurrence of cracks and the like on the leather. In addition, the seaweed extract may provide antimicrobial, antifouling, air permeability, etc., and may improve the water content of the leather material. In addition, it is non-toxic to human body and has good processability, which can simplify the manufacturing process of leather based on natural fibers.

The algae extract may be extracts obtained from seaweeds such as red algae, brown algae, green algae, chlorella and spirulina. The red algae may include woodworms, laver, kotoni, dog gambling, rounded seaweed, daikon radish, buckwheat, grasshopper, walrus, jindubal, sesame gambling, spiny radish, silk grass, vulgaris, stone starch, stone, and noir. . The brown algae, seaweed, kelp, barn horse, minji, horse, shellfish, seaweed, seaweed, Ecklonia, gompi, rhubarb, iron seaweed cousin, mabanban, hoesan mabanban, jichungyi and 톳. The green algae may be cheontae, haecam, green, hearing, bead hearing, jade and saline.

The seaweed extract is a polysaccharide material, and may include one or more selected from the group consisting of radish, starch, agar, carrageenan, alginic acid, and alginate. May be alginic acid. For example, the alginic acid is a substance extracted from brown algae such as seaweed and kelp, and is a copolymer in which a manuronic acid block, a gluronic acid block, and an intermediate block thereof are bonded with 1,4-glycoside. The alginic acid can penetrate into the natural fiber based leather material and act as an adhesive with high density and suitable viscosity between and / or within the fibers. In addition, since the alginic acid has a carboxyl group in the molecule, it provides antimicrobial functionality and has a high water content to improve air permeability and the like.

The algae extract may include algae and water and / or alcohols such as methanol, ethanol, propanol and butanol; Hexane; Ketones such as acetone; It may be extracted or concentrated with an organic solvent such as powder or the like, pressurized and extracted with oil, powder obtained by using a grinding device. The seaweed extract can be obtained using a method known in the art, for example, the seaweed is immersed in an aqueous alkali solution for a predetermined time and then washed with water, and the washed seaweed is immersed in an extraction solvent and extracted can do. At this time, the extraction temperature may be appropriately selected, it may be 50 ℃ to 150 ℃. The extraction solvent, the solvent mentioned above; And H ₂ SO ₄ , HCl, HBr, HNO ₃ , CH ₃ COOH, HCOOH, HClO ₄ (perchloric acid), H ₃ PO ₄ (phosphoric acid), acids such as PTSA (para-toluene sulfonic acid), commercial solid acids, and the like, and the aqueous alkali solution may include potassium hydroxide, sodium hydroxide, calcium hydroxide, aqueous ammonia solution, and the like.

The seaweed extract, 1% by volume to 90% by volume relative to the total volume of the natural fiber-based leather material; Preferably 1% to 50% by volume; More preferably from 2% by volume to 30% by volume. When the algae extract is included in the above range, the algae extract has a high penetration rate inside the natural fiber-based leather to form strong bonds between the fibers, and prevents the occurrence of cracks and deterioration of mechanical strength in post-processing processes such as painting. can do.

According to one embodiment of the invention, the natural fiber-based leather may further comprise a latex. The latex (Latex), while having the function of the adhesive can adjust the flexibility of the leather, elastic recovery rate and the like, it is possible to improve the feel of the leather. The latex is greater than 0 to 50 parts by weight based on the seaweed extract; 1 part by weight to 30 parts by weight; Or 1 part by weight to 10 parts by weight. The latex may be a natural product obtained from a rubber tree or a polymer obtained by copolymerizing a polymer in which styrene and butadiene are composed of a main monomer.

According to an embodiment of the present invention, the natural fiber-based leather material may further include an additive applicable to the fiber and leather material to provide the functions, properties, and the like required for the application field. The additive may include, but is not limited to, a dye, a dye, an antimicrobial component, an antibacterial agent, a brightener, and the like. The additive is greater than 0 to 10 parts by weight based on the seaweed extract; Or 0.1 parts by weight to 5 parts by weight.

The antimicrobial component may include antimicrobial substances, plant extracts, herb extracts, herbal extracts, and the like, for example, chitosan, silver nano, volcanic ash, clay, phytoncide, ceramide, ocher, germanium, ganban, jade and charcoal. Antimicrobial substances; And camphoraceae, cypressaceae, pineaceae, cedaraceae, elmaceae, green tea, camellias, juniper, medicinal herbs, herbs, ash, oleaceae, ginkgo, honeysuckle, camphor, flax, linaceae, poaceae Plant extracts such as asteraceae, liliaceae, lotus leaf, Lamiaceae, Asteraceae, Oak and Sumac; Wood vinegar, such as sap or sap obtained from wood; And the like, but are not limited thereto.

For example, the herb extract, persimmon soup, licorice, licorice, gyeji, wolfberry, Angelica, venom, tofu, ephedra, ephedra, manza, quince, mokyang, peppermint, half, windproof, baekbokyeong, count, white paper, ginger, raw jihwang, Gypsum, Sejin, Sokji, Sukjihwang, Shiho, Yak, Emulsion, Soybeanworm, Broiler, Ginseng, Kill, Crust, Phalanx, Gemini, Orthodox, Dermis, Creation, Cheongung, Gardenia, Hyangbuja, Golden, Huangyan, Yellow white, Astragalus, safflower, sewage, three hundred seconds, Eoseongcho, wormwood, and extracts such as mammundong and the like, but may not be limited thereto. The extract, boiled with water, leaves, stems, flowers, roots, fruits or seeds, or may be concentrated or extracted by extraction with a solvent such as alcohol, hexane.

According to one embodiment of the invention, the natural fiber-based leather material, similar to the natural leather feel, volume, flexibility, etc., while exhibiting excellent tensile strength, 5 to 60% compression rate (thickness direction) and 10% elongation The elastic recovery rate at time may be 80% or more (restore rate, thickness direction). When included in the range of the compressibility and elastic recovery rate can improve the shape stability, fullness, etc. while having a good touch of the leather.

According to an embodiment of the present invention, it relates to a product comprising the natural fiber-based leather. The product can be applied without limitation as long as the leather is applicable, for example, shoes, clothing, gloves, accessories (accessories, bags, shoes, belts, hats, wallets, etc.), furniture, bedding, decorative materials, interior interior materials, Automotive interior materials, but is not limited thereto.

The present invention relates to a method of manufacturing natural fiber-based leather, according to an embodiment of the present invention, the manufacturing method will be described with reference to FIG. Figure 1, according to an embodiment of the present invention, relates to a method for producing a natural fiber-based leather material according to the present invention, in the manufacturing method of Figure 1, preparing a base material based on a natural material (110) ; Preprocessing the base fiber with moisture (120); Preparing a pressure-sensitive adhesive solution (130); And treating the adhesive solution on the base fiber (140).

According to an embodiment of the present invention, the preparing of the base fiber based on the natural material 110 may include at least one selected from the group consisting of the aforementioned base fiber and / or a fabric, a fabric, and a nonwoven fabric including the base fiber. The fiber base material containing the above can be prepared.

According to one embodiment of the present invention, the step of pretreating the base fiber with water 120 is to increase the moisture content of the base fiber by spraying or applying water to the base fiber, such as mist or immersed in water. The pretreatment may include a temperature of 0 ° C. or higher; Room temperature to 200 ° C. temperature; It may be carried out at room temperature to 100 ℃ temperature. The mist may be produced by ultrasonic spraying of water or may be steam. The preprocessing step 120 may include at least one second; 1 second to 5 hours; 1 minute to 2 hours; Or 1 minute to 1 hour. When included in the temperature and time range, the water solubility of the pressure-sensitive adhesive may be increased to improve the internal penetration of the pressure-sensitive adhesive. The pretreatment with water may be carried out by further adding the above-mentioned additives to water, and for example, water extracts, wood vinegar, etc. may be added to increase antibacterial activity or dyeing with dyes and the like.

According to an embodiment of the present invention, preparing the pressure-sensitive adhesive solution 130 is a step of preparing a pressure-sensitive adhesive solution comprising a seaweed extract that penetrates into the base fiber or fiber substrate to act as a pressure-sensitive adhesive. The additive solution may include an algae extract and a solvent, and may further include a latex and an additive. The seaweed extract, latex and additives are as mentioned above.

For example, preparing a pressure-sensitive adhesive solution 130 may include gelling seaweed extract 131; To include, and adding a latex to the gelled seaweed extract (132); It may further include.

Gelling the seaweed extract 131 is a step of mixing the water and seaweed extract to form a gelled seaweed extract. The mixing ratio of the seaweed extract to water is 1:10 to 1: 500 (mass ratio); Or 1: 100 to 1: 300 (mass ratio), and when included in the mixing ratio, it is possible to improve the flexibility, durability, etc. of the leather by providing appropriate viscosity while increasing the internal penetration rate of the pressure-sensitive adhesive. In addition, the step 131 of gelling the seaweed extract may further add the above-mentioned additives to form a gelled seaweed extract.

Adding latex to the gelled seaweed extract 132 is adding a mixed solution of latex and water to the gelled seaweed extract. The mixing ratio of latex to water in the mixed solution is 1: 1 to 1:10 (mass ratio); Or 1: 2 to 1: 5 (mass ratio). The mixed solution, wherein the mixing ratio of the mixed solution to the gelled seaweed extract is 1: 1 to 100: 1 (mass ratio); Or 5: 1 to 20: 1 (mass ratio). When included in the mixing ratio, it is possible to increase the internal penetration rate of the gelled seaweed extract and latex, and improve the adhesion and mechanical properties between the fibers. The latex is liquid or 0.01 μm to 10 μm in diameter; Or spherical polymer particles of 0.1 μm to 5 μm. In addition, the above-mentioned additives may be further added to the mixed solution.

According to one embodiment of the present invention, the step 140 of treating the pressure-sensitive adhesive solution, spraying or applying a pressure-sensitive adhesive solution to the base fiber pre-treated with the water or immersing the base fiber in the pressure-sensitive adhesive solution to the pressure-sensitive adhesive solution Penetration step. For example, a constant pressure is applied such as a roll-to-roll coating to infiltrate the adhesive solution or an ultrasonic spray spray, application or immersion is applied to a constant pressure (for example, using a roll, a mill, etc.) to increase the penetration of the adhesive solution. And induce uniform penetration.

Treating the pressure-sensitive adhesive solution 140 may form a reduced pressure atmosphere during or after treatment of the pressure-sensitive adhesive solution to the base fiber in the above-described process to evaporate a portion of the solution and / or remove bubbles. . For example, a bubble may be removed by forming a reduced pressure atmosphere during or after immersion.

According to one embodiment of the present invention, the step 150 of treating the inorganic salt solution to the base fiber treated with the pressure-sensitive adhesive solution; may further include. Treating the inorganic salt solution (150), by treating the inorganic salt to induce coagulation of the seaweed extract to increase the packing density of the seaweed extract between the base fibers, while maintaining the proper viscosity of the base fibers Can increase the adhesion. In addition, by applying the inorganic salt solution it can adjust the elastic recovery rate, flexibility, etc. of the leather material. The inorganic salt may include one or more selected from the group consisting of halogen salts, acetates, phosphates, sulfates and nitrates of calcium, potassium, or sodium. For example, it may be a chloride, acetate, phosphate, or the like of calcium, potassium, or sodium. The inorganic salt may be treated with an aqueous solution of 1 to 30% by weight. When included in the concentration range of the inorganic salt it is advantageous to control the viscosity of the leather and improve the durability, feel and the like of the leather. As an example, the inorganic salt may be calcium chloride.

According to one embodiment of the invention, the step of heat treatment drying 160 and defoaming step 170 may be further included.

The heat treatment drying step 160 is to remove the adhesive, the solution, and the like remaining on the surface of the leather material, and to remove the solvent and the like leaving an effective component such as pressure-sensitive adhesive, latex, additives in the leather material. Heat treatment step 160, room temperature to 100 ℃; Alternatively 50 ° C. to 80 ° C .; At least 1 second; 1 minute to 24 hours; 1 minute to 10 hours; Or heat treated to dry for 1 minute to 5 hours.

Degassing step 170 is a step of forming a reduced pressure atmosphere before, after, or both of the heat treatment to evaporate the solution and remove the bubbles. Preferably, it may proceed prior to the heat treatment. Defoaming step 170, the room temperature to 100 ℃; Or room temperature ℃ to 40 ℃; At least 1 second; 1 minute to 5 hours; Defoaming for 1 minute to 1 hour.

Optionally, a constant pressure may be applied to the specimen before and / or after at least one of the heat treatment drying step 160 and the defoaming step 170, for example, compacted using a milling machine.

According to one embodiment of the invention, according to the application method, the application of the leather material can be carried out a suitable post-processing process known in the art of the present invention, for example, painting, dyeing, surface treatment, milling, etc. with water-based ink, etc. May be, but is not specifically mentioned herein.

Example

Hemp and cotton mixed fibers (mixture rate: 20% hemp and 80% cotton, fiber thickness: 8 water) were treated with water vapor for 1 minute and then immersed in the adhesive solution for 5 minutes. Next, CaCl ₂ The solution was treated with an aqueous solution (20 wt%) for 1 minute 30 seconds and then washed once with water. Thereafter, the mixture was heat-treated and dried for 20 minutes while maintaining the temperature at 40 degrees in a closed space. Then the material was put into the mill to press the material.

The pressure-sensitive adhesive solution was made of alginic acid (10 wt%), latex (40 wt%) and water (50 wt%).

(1) Hazardous Ingredients

Leather prepared in Example was analyzed for harmful components in the FITI test researchers, the results are shown in Table 1.

Standard (mg / Kg) result Arylamine 300 or less Not detected Formaldehyde 5.0 or less Not detected Chlorinated Phenols 3.0 or less Not detected Hexavalent Chromium Content 3.0 or less Not detected Organotin compounds 1.0 or less Not detected Dimethyl fumarate 0.1 or less Not detected

In the case of general leather products, the numerical value may be about the reference value or less, but in the case of the present invention, it was confirmed as a range less than the detectability at all, thereby confirming the result of no detection.

(2) tensile strength

Using KS K 0520: 2015 method, CRE and Grab method, the tensile strength of the fabric was measured to be 10 cm wide and 15 cm long after being left for 24 hours under standard conditions (20 ° C, 65% relative humidity). . The result was measured at length: 650 N and width 1400 (N).

(3) air permeability

The air permeability was measured under 125 Pa pressure in accordance with KS K ISO 9237: 2011 law. As a result, the air permeability was measured to be 2.0 or more (mm / s). Therefore, in the case of the present invention it was confirmed that the ventilation is also very excellent.

(4) friction fastness

Friction fastness was measured in accordance with the provisions of KS K 0650: 2011, and the results were measured as dry (grades 4-5) and wet (grades 4-5).

(5) antibacterial

According to the present invention, an antimicrobial test using Staphylococcus aureus ATCC6538 Staphylococcus aureus and Klebsiella pneumoniae ATCC4352 pneumoniae (incubation after inoculation) ensures a 99.9% sterilization reduction rate (%) in the relationship between the control groups for 18 hours of incubation. It was confirmed.

-Sterilization Reduction (%) = 100 (Y-X) / Y

X: viable count after 18 h culture for Example

Y: number of live bacteria immediately after inoculation of the control group

Figure 2 is a photograph of the finished product of the natural fiber-based leather material implemented in various colors, according to an embodiment of the present invention. By applying various colors to the natural fiber-based leather material implemented by the above-described method to secure the leather material as shown in FIG.

As mentioned above, the leather material of the embodiment of the present invention can be confirmed that the harmful components are not detected or detected below the reference value and have low harmfulness and eco-friendliness. In addition, the leather material of the embodiment of the present invention provides a feel similar to natural leather, and has excellent anti-physical properties in both tensile strength, air permeability and friction fastness, and thus can be applied as a substitute for natural leather and artificial leather.

Although the embodiments have been described with reference to the accompanying drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques may be performed in a different order than the described method, and / or components of the described systems, structures, devices, circuits, etc. may be combined or combined in a different form than the described method, or other components. Or, even if replaced or substituted by equivalents, an appropriate result can be achieved.

Therefore, other implementations, other embodiments, and equivalents to the claims are within the scope of the following claims.

Claims (18)

delete delete delete delete delete delete delete delete Preparing a base fiber based on a natural material;
Pretreating the base fiber with moisture;
Preparing a pressure-sensitive adhesive solution; And
Treating the pressure sensitive adhesive solution to a base fiber;
Including,
The base fiber, at least one natural material selected from the group consisting of cotton, hemp, ramie, Hanji fiber and wood fiber,
The pressure-sensitive adhesive solution, seaweed extract and latex,
The algae extract and the latex are penetrated into the natural fiber-based leather,
The seaweed extract is included in 1% by volume to 90% by volume relative to the total volume of the natural fiber-based leather,
The thickness of the base fiber is 8 to 12,
Preparing the pressure-sensitive adhesive solution,
Gelling the algae extract; And
Adding latex to the gelled seaweed extract;
Including,
Adding the latex, adding a mixed solution of latex and water,
The mixing ratio of latex to water in the mixed solution is 1: 1 to 1:10 (mass ratio),
The mixing ratio of the mixed solution to the gelled seaweed extract in the step of adding the latex is 1: 1 to 100: 1 (mass ratio),
Method for producing leather based on natural fibers.
The method of claim 9,
The step of treating the pressure-sensitive adhesive solution is to spray the pressure-sensitive adhesive solution on the base fiber or to immerse the base fiber in the pressure-sensitive adhesive solution,
Method for producing leather based on natural fibers.
The method of claim 9,
Treating an inorganic salt solution to the base fiber treated with the pressure-sensitive adhesive solution; More,
The inorganic salt is one containing at least one selected from the group consisting of halogen salts, acetates, phosphates, sulfates and nitrates of calcium, potassium, or sodium,
Method for producing leather based on natural fibers.
The method of claim 9,
The pressure-sensitive adhesive solution contains a solvent and an additive,
Wherein the additive is one containing at least one selected from the group consisting of dyes, antimicrobial substances, herbal extracts and wood vinegar solution,
Method for producing leather based on natural fibers.
delete The method of claim 9,
The step of gelling the seaweed extract, gelatinized by mixing water and seaweed extract, the mixing ratio of the seaweed extract to water is 1:10 to 1: 500 (mass ratio),
Method for producing leather based on natural fibers.
delete delete The method of claim 9,
The step of treating the pressure-sensitive adhesive solution is to induce penetration of the pressure-sensitive adhesive solution by applying a pressure after spraying or dipping the pressure-sensitive adhesive solution,
Method for producing leather based on natural fibers.
The method of claim 9,
Heat-drying for at least 1 second at room temperature to 100 ° C; And
Defoaming; To further include,
Method for producing leather based on natural fibers.

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