KR100389515B1 - Waterproof, water vapour permeability and antibiotic leather manufacture method for dress shoes - Google Patents

Abstract

The present invention provides a waterproof and moisture-permeable treatment process using hydrocarbon, Phosphate, Silicon, Fluoro branching agent with high hydrophobic effect in retanning and branching process among tanning, neutralizing, retanning, dyeing and branching processes of conventional leather. The present invention relates to a method of manufacturing functional leather for long-term waterproofing, moisture permeability and antimicrobial activity as a process using antibacterial agents (CMK, OITZ, TCMTB based) in pickle, tanning and neutralization processes.

Description

Leather which has waterproofness, moisture permeability and antibacterial property and manufacturing method. {WATERPROOF, WATER VAPOUR PERMEABILITY AND ANTIBIOTIC LEATHER MANUFACTURE METHOD FOR DRESS SHOES}

The present invention relates to a leather manufacturing method, and more particularly, to a leather using a leather fabric excellent in water resistance, moisture permeability and antibacterial properties and a method of manufacturing the same.

Conventionally, leather material having water resistance has been applied to some shoes, but it is not waterproof until long-term use and does not reach the level that can satisfy the requirements of consumers, and leather manufactured by conventional methods has a low waterproof and moisture permeability performance. Had a problem.

In particular, the waterproof and moisture-permeable properties are opposite to each other in the concept of high water resistance, low moisture permeability, high moisture permeability, low water resistance and excellent water resistance and moisture permeability of the leather manufacturing techniques have never existed before.

In addition, most of the proteins constituting leather are collagen proteins, which are highly convergent in a reticular structure, which not only enables microbial propagation on the fiber but also can cause odors, thereby providing new antimicrobial properties. Development is necessary, but due to the lack of research on antimicrobial mechanism, it is impossible to manufacture effective antimicrobial leather such as antimicrobial persistence by random treatment of commercially available antimicrobial agents without accurate diagnosis.

Meanwhile, in order to solve the above problems, the conventional product has been commercialized through some basic research, but it focused on waterproofing the surface which does not have the full dynamic waterproofness, and in particular, due to the lack of understanding and research on the moisture permeability that must be considered in manufacturing waterproof leather. It had the problem of not breathing at all, the greatest advantage of natural leather.

Therefore, the present invention for solving the above problems is the process of manufacturing leather, water, lime, splitting (splitting process of silver and flesh), deliming and aging process through the pickle, tanning process CMK, OITZ After treatment with antimicrobial agent of TCMTB series, neutralization, retanning (aldehyde condensation of aromatic Sulfone compound, low molecular resin synthetic emulsion, etc.) treatment, water treatment in the final branch process The purpose of the waterproofing treatment is to provide a method for producing waterproof and antibacterial leather using a waterproofing agent such as hydrocarbon-based, phosphate-based, fluoro-based or silicone-based and a leather made by the method.

It is another object of the present invention to provide a leather having excellent moisture permeability and waterproofness and a manufacturing method thereof having a dynamic water resistance of 20,000 times or more and a moisture permeability of 7 mg / cm ² / hour or more.

Another object of the present invention is to provide a leather manufacturing method that can maximize the antimicrobial power by using in an effective leather manufacturing process according to the components constituting the antimicrobial agent.

The present invention according to the first aspect for achieving the object as described above is the soaked, limed, demineralized and soaked napi after the step of soaking with sulfuric acid and formic acid to pH = 2.0 to 3.5, and then After the antimicrobial agent was treated for 1 hour at 450-1800ppm compared to the active ingredient based on the weight of the raw material skin, mineralized fibrous animal material using chromium salt, and then the TCMTB-based antimicrobial agent was compared with the active ingredient based on the weight of the raw material. After treatment for 1 hour with 450 to 1800ppm, and then neutralized to increase the pH to 5.0 to 6.5 for the dyeing and eggplant process, and then again OITZ-based antimicrobial agent for 450 hours to 1800ppm based on the active ingredient The present invention proposes a method of manufacturing leather having waterproof, moisture permeable and antimicrobial properties.

Hereinafter, preferred embodiments of the present invention will be described in detail. It should be noted that in the following description, only parts necessary for understanding the manufacturing method of the present invention will be described, and descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention.

The present invention undergoes the process of manufacturing chrome tanning leather of leather, water, lime, splitting (departing silver and meat), deliming and aging, pickle, tanning, neutralization process in the pickle process para-Chloro-meta- The antimicrobial agent of cresol-3-methyl-4-chlorophenol (hereinafter referred to as "CMK") uses 450 to 1800ppm of active ingredient based on the weight of raw materials.

In the tanning process, an antimicrobial agent of 2- (Thiocyanomethylthio) benzothiazole (hereinafter referred to as "TCMTB") system uses 450 to 1800 ppm of active ingredient based on the weight of raw materials. In the neutralization process, 2-N-Octyl-4-Isothiazolin3- The antimicrobial agent of One (hereinafter referred to as "OITZ") system is given 450 to 1800ppm of active ingredient based on the weight of the raw material. At this time, the pH of the pickle process is adjusted to pH 2.3-3.5 using sulfuric acid and formic acid. The chemical composition for pH adjustment is sodium bicarbonate (NaHCO3), Sodium carbonate (Na2CO3), Sodium formate (HCOONa) and Naphthalene-based Neutralizing synthetic tanning agent.

On the other hand, the antimicrobial agent used in the present invention as a CMK-based antimicrobial agent Preventol CMK (brand name, manufacturer: Bayer), TCMTB-based antibacterial agent Busan 30L (brand name, manufacturer: Buckman), OITZ-based antimicrobial agent ROZ- 400 (trade name, Rohm Haas) is used.

In addition, strains used for antibacterial testing include Aspergillus niger (KCTC 6985), Penicillium citrinum (KCTC 6549), Rhizopus nigricans (KCTC 6942), Trichoderma sp. (KCTC 16777), Paecilomyces variotii KCTC 6529), Aureobasidium sp. (KCTC 6081), and the like, and also to check the antimicrobial activity (Inhibition zone) and then after the dyeing process is subjected to waterproof treatment in eggplant process.

After adding about 1 to 15% of a waterproofing fatliquor to the resultant after the neutralization process, it is subjected to a branching process (Fatliquoring) for 20 to 180 minutes. Here, the above-described waterproofing fatliquor is used to impart an open type of waterproofing effect, and the materials include hydrocarbon-based, phosphate-based, silicon-based and fluorine. Fluoro-based or the like is used.

Then, after adjusting the pH by 3.2-4.0 with formic acid, the resultant of the above-mentioned process was finally used, and metals such as chromium sulfate, zirconium sulfate, and aluminum chloride dissolved in hot water. Stick to it.

The waterproofing agent used here is hydrocarbon-based Lubritan WP (trade name, manufacturer: Rohm Haas), phosphate-based Ombrellon WR (trade name, manufacturer: Munzing), fluorinated FX 3564 (trade name, manufacturer: 3M), silicone-based Densodrin S (brand name, Manufacturer: BASF) and the like. Meanwhile, the hydrocarbon-based eggplant is composed of aqueous siloxane emulsions (free from solvents and emulsions), and approximately 6-12% of the weight of leather is used. In particular, silicone-based waterproofing agent can be expected to be very effective waterproofing leather when used in 1: 5 or 2: 4 ratio with fluorine branching agent.

The product that has undergone the above process is made of leather having waterproof and antimicrobial properties through a drying and coating process.

Hereinafter, the present invention will be described in detail based on the preferred embodiment of the present invention, but the present invention is not limited to the embodiment.

{Example 1}

Bovine skin, pork skin and other salted raw skins were soaked (using a degreasing agent), pressed (a process for removing contaminants such as fat), and then limed (calcium hydroxide (Ca (OH) ₂ + emulsified soda). + Dehydrating soda + degreasing agent) to depilate the fiber structure.

Then, using a band knife, the silver and the meat are separated, the skin is used as epithelium, and the skin is remineralized (calcined lime is used about 1% of the weight). .

Next, after washing with the remineralized leather, the deliming process was performed using salt and yuan, and then it was again treated with a solubilizer, washed with water, and then pickled. At this time, when performing the aforementioned pickle process, the pH is adjusted to 2.5 to 3.5 using sulfuric acid and formic acid.

Afterwards, the CMK-based antimicrobial agent was treated for 1 hour at 450-1800 ppm relative to the active ingredient based on the weight of the raw material in the final step of the pickle process, which was adjusted to pH, and then subjected to the chrome tanning process (mineralization of animal skin). After rotating in a drum for about 8 hours using 7% chromium, the pH was adjusted to about 3.5 to 4.5 using sodium bicarbonate and magnesium.

Next, TCMTB-based antimicrobial agent was treated for 1 hour at 450-1800 ppm relative to the active ingredient based on the weight of raw materials, and the dyeing and eggplant treatment were performed in a neutralizing process. The antimicrobial leather was prepared by treating 450 to 1800 ppm of the active ingredient with respect to the active ingredient weight basis for 1 hour.

{Example 2}

The resultant obtained in Example 1 was subjected to a retanning process using a sulfone compound, an aldehyde condensate, a low molecular resin synthetic emulsion, and the like, and then again, a dyeing process was performed using warm water.

Subsequently, the resultant having undergone the above-described process is finally used for the waterproofing agent in the eggplant process. Preferably, in the eggplant process, the hydrocarbon-based eggplant 4%, the silicone-based waterproofing agent 3%, and the fluorinated waterproofing agent 2% at 60 ° C. The above-described result was added to a drum immersed in hot water, followed by treatment for 1 hour, and then the pH was adjusted to 3.2 to 3.4 using formic acid.

Next, after washing the resultant through the above process, in order to promote the adhesion of collagen to the resultant after the washing process 20% treated with 2% chromium sulfate dissolved in hot water, and then again washed with water for 1 day Aged.

Subsequently, the resultant of the above-described process by using a spray (Spray), a roll coat (Roll coater), etc. by the coating process to produce a leather having excellent surface waterproofing.

{Example 3}

The resultant obtained in Example 1 was subjected to a retanning process using a sulfone compound, an aldehyde condensate, a low molecular resin synthetic emulsion, and the like, and then again, a dyeing process was performed using warm water. On the other hand, the retanning and dyeing process is a general process in leather production.

Subsequently, the resultant, which has undergone the above-described process, finally uses a waterproofing agent in the eggplant process. Preferably, in the eggplant process, a hydrocarbon-based eggplant 7% and a phosphate-based waterproofing agent 2% are placed in a drum immersed in hot water at 60 ° C. After adding the above-mentioned resultant, it was treated for 1 hour, and then it was again adjusted to pH 3.2-3.4 using formic acid.

Next, after washing the resultant through the above process, in order to promote the adhesion of collagen to the resultant after the washing process, treated with zirconium sulfate 2% and 1% aluminum chloride dissolved in hot water for 20 minutes, and then again washed with water And aged for 1 day.

Subsequently, a leather having excellent dynamic waterproofing and moisture permeability was manufactured by performing a coating process using a spray, a roll coater, or the like.

As described above, the method of the present invention for imparting waterproofness, moisture permeability, and antibacterial property to leather has an advantage of not requiring a new facility because it is based on the conventional leather manufacturing process as described above.

In addition, the present invention has the advantage of long-lasting antimicrobial and waterproofing by the effective antibacterial agent treatment (the effect on use during the leather manufacturing process varies depending on the material of the antimicrobial agent) and by the treatment of the waterproof agent for the function.

In addition, the present invention is manufactured in an open type (Open type) has a synergistic effect of reducing the damage caused by sweat when used for shoemaking at the same time having a waterproof function as well as a waterproof function.

Claims (4)

In the manufacturing method of the leather which has waterproofness, moisture permeability, and antibacterial property, After the soaking, lime, demineralization, and solubilization process, the napis were immersed with sulfuric acid and formic acid to pH = 2.0∼3.5, and then the CMK-based antimicrobial was treated for 1 hour at 450 ~ 1800ppm based on the active ingredient weight A first process of doing; A second step of mineralizing the fibrous animal material using the chromium salt in the resultant of the first step, and then treating the antimicrobial agent of the TCMTB system with 450 to 1800 ppm relative to the active ingredient based on the weight of the raw material for 1 hour; After the neutralization process to increase the pH to about 5.0 ~ 6.5 for the dyeing and eggplant process to the result of the second process, and then to give the antimicrobial power by treating the OITZ-based antimicrobial agent with an active ingredient 450 ~ 1800ppm for 1 hour Leather manufacturing method having a waterproof, breathable and antibacterial, characterized in that the third process. The method of claim 1, The resultant of the third process was subjected to a normal retanning process and a dyeing process, and again, 2-6% of the hydrocarbon-based branching agent, 1-5% of the silicone-based waterproofing agent, and 1-4% of the fluorinated waterproofing agent were 60 ° C. A fourth step of treating for one hour in a drum immersed in hot water of; After adjusting the pH to 3.2 to 3.4 using formic acid in the result of the fourth process, and then washed with water, and then treated with 1 to 4% chromium sulfate dissolved in hot water for 10 to 30 minutes to promote the adhesion of collagen to it. Leather manufacturing method having a waterproof, moisture-permeable and antibacterial, characterized in that the fifth process made. The method of claim 1, The resultant of the third process was subjected to a normal retanning process and a dyeing process, and then, in a drum in which 5-9% of a hydrocarbon-based eggplant and 1-4% of a phosphate-based waterproofing agent were immersed in hot water at 60 ° C. A fourth process of processing for a time; After adjusting the pH to 3.2 to 3.4 using formic acid in the result of the fourth process, and then washed with water, and then treated with 1 to 4% zirconium sulfate dissolved in hot water for 10 to 30 minutes to promote adhesion of collagen to it. Leather manufacturing method having a waterproof, moisture-permeable and antibacterial, characterized in that the fifth process made. Leather having water resistance, moisture permeability and antibacterial produced by the method of any one of claims 1 to 3.