Antibacterial, mildewproof and antiviral leather and preparation method thereof

Abstract

The present application relates to the leather technical field, especially to a kind of antibacterial mildew-resistant antiviral leather and preparation method.It mainly aims at the problems that antibacterial effect of leather is poor, antibacterial sustained period is short, bacteriostatic molecule in leather can be released, leather reuse rate is low, antibacterial antiviral mildew-resistant period is limited, proposes the following technical scheme: including leather body, the leather body includes surface layer, the side of the adhesive layer is provided with adhesive layer, the side of the adhesive layer is connected with bacteriostatic layer, the side of the bacteriostatic layer is provided with base cloth layer, a plurality of through cavities are arranged in the bacteriostatic layer.The antibacterial bacteriostatic effect of the present application leather is good, the prepared leather has high air permeability, reduces the generation of perspiration stain, while having high elastic softness effect, the use comfort of leather is improved, antiviral foam rubber can be replaced, improve the reuse rate and antiviral effect of leather, mainly applied to antibacterial mildew-resistant antiviral leather.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of leather technology, and in particular to an antibacterial, mildew-resistant and antiviral leather and a preparation method thereof. BACKGROUND

[0002] The structure of leather is characterized by being prone to produce a large amount of sweat in a humid environment, especially in summer. When the leather is used to make clothes or mattresses, sweat will be produced on the part in contact with the human body. A large amount of sweat cannot evaporate, thereby being particularly prone to breed a large amount of bacteria. If the leather product is not cleaned in time, mildew will be produced on the surface of the leather, which not only seriously affects the appearance of the leather, but also seriously reduces the service life of the leather and causes various skin diseases to the human body. Therefore, the antibacterial, mildew-resistant and antiviral treatment of the leather is crucial to improve the quality of the leather and the health of the human body. In the patent "CN112593020A", a preparation method of antibacterial, mildew-resistant and antiviral leather, leather and belt are proposed. In the scheme, the leather is soaked in the bacteriostatic liquid through tanning, re-tanning and other treatment processes, so that the leather as a whole has antibacterial properties, and the surface of the leather has the effect of having bacteriostatic ability.

[0003] However, the antibacterial effect of the leather in the scheme is not good, the antibacterial duration is short, the bacteriostatic molecules in the leather will be released, and the antibacterial agent of the leather cannot be refilled, so that the reuse rate of the leather is low, and the antibacterial, antiviral and mildew-resistant period is limited. In view of this, an antibacterial, mildew-resistant and antiviral leather and a preparation method thereof are proposed. SUMMARY

[0004] The purpose of the present application is to solve the problems of poor antibacterial effect of leather, short antibacterial duration, release of bacteriostatic molecules in leather, low reuse rate of leather, and limited antibacterial, antiviral and mildew-resistant period in the background art. An antibacterial, mildew-resistant and antiviral leather and a preparation method thereof are proposed.

[0005] The technical scheme of the present application is an antibacterial, mildew-resistant and antiviral leather, comprising a leather body, wherein the leather body comprises a surface layer, the surface layer is provided with an adhesive layer on one side, the adhesive layer is connected with a bacteriostatic layer on one side, the bacteriostatic layer is provided with a base cloth layer on one side, a plurality of through cavities are formed in the bacteriostatic layer, and a filling cavity is arranged between adjacent two through cavities and penetrates the two through cavities.

[0006] Preferably, an antiviral line is arranged in the surface layer, the antiviral line is a high-strength fiber line, and an antiviral foaming glue is filled in the filling cavity.

[0007] Preferably, the anti-virus foam adhesive comprises the following mass parts of raw materials: pressure-sensitive adhesive 100-120 parts, inorganic nano-silver 1.2-3.6 parts, anti-virus additive 0.2-0.5 parts, accelerator 0.5-0.8 parts, wet dispersant 0.1-0.3 parts, thickening agent 0.1-0.3 parts, excipient 0.3-0.6 parts, tetramethyl guanidine trifluoromethane sulfonate 0.01-0.05 parts, and water 50-60 parts.

[0008] Preferably, the particle size of the inorganic nano-silver is 0.2 nm, the anti-virus additive is dm3015N, the accelerator is 2-mercaptobenzothiazole, the excipient is a combination of polyvinyl alcohol, polyvinyl formal, polyvinylpyrrolidone, carboxymethyl cellulose, and sodium polyacrylate, the mass ratio of the polyvinyl alcohol, polyvinyl formal, polyvinylpyrrolidone, carboxymethyl cellulose, and sodium polyacrylate is 1.1:0.8:0.7:0.65:1.3, the thickening agent is acid-resistant propylene glycol alginate, the pressure-sensitive adhesive is an organic silicon-based pressure-sensitive adhesive, and the organic silicon-based pressure-sensitive adhesive is a combination of methyl silicone resin, methylphenyl silicone resin, and phenyl vinyl silicone resin, the mass ratio of the methyl silicone resin, methylphenyl silicone resin, and phenyl vinyl silicone resin is 0.8-1.3-1.1.

[0009] Preferably, the anti-virus foam adhesive comprises the following mass parts of raw materials: pressure-sensitive adhesive 100-120 parts, inorganic nano-silver 1.2-3.6 parts, anti-virus additive 0.2-0.5 parts, accelerator 0.5-0.8 parts, wet dispersant 0.1-0.3 parts, thickening agent 0.1-0.3 parts, excipient 0.3-0.6 parts, tetramethyl guanidine trifluoromethane sulfonate 0.01-0.05 parts, and water 50-60 parts.

[0010] A preparation method of an antibacterial, mildew-resistant, and anti-virus leather, comprising the following preparation steps:

[0011] Step one: immerse the anti-virus thread in an environmental liquid with a pH value of 6.5-7.2, add 40% of the anti-virus additive liquid into the environmental solution, stir and mix for 15 min, add the remaining 60% of the anti-virus additive liquid again, stir and mix for 20 min, and then immerse the anti-virus thread for 15 min, and then connect the anti-virus thread from the surface layer through the needle equipment;

[0012] Step two: obtain the leather body by pressing, ironing, and fatliquoring the surface layer, the bonding layer, the bacteriostatic layer, and the base cloth layer, and fill the anti-virus foam adhesive into the filling cavity and the through cavity;

[0013] Step three: after the filling is completed, seal the two ends of the through cavity, perform edge sealing treatment, immerse the leather body as a whole in a mildew-resistant solution for 2 h, wipe off, and then dry to obtain the mildew-resistant leather.

[0014] Preferably, the mildew-proof solution comprises the following raw materials by mass fraction: barbituric acid 12-17 parts, 4-benzyloxy benzoic acid 8-16 parts, abietic acid 5-9 parts, ethylene bis-stearamide 10-12 parts, water 300-340 parts, and 60% concentration ethanol 10-15 parts.

[0015] Preferably, the mildew-proof solution comprises the following raw materials by mass fraction: barbituric acid 12 parts, 4-benzyloxy benzoic acid 8 parts, abietic acid 5 parts, ethylene bis-stearamide 10 parts, water 300 parts, and 60% concentration ethanol 10 parts.

[0016] Preferably, the mildew-proof solution comprises the following raw materials by mass fraction: barbituric acid 17 parts, 4-benzyloxy benzoic acid 16 parts, abietic acid 9 parts, ethylene bis-stearamide 12 parts, water 340 parts, and 60% concentration ethanol 15 parts.

[0017] Preferably, the mildew-proof solution comprises the following raw materials by mass fraction: barbituric acid 15 parts, 4-benzyloxy benzoic acid 12 parts, abietic acid 7 parts, ethylene bis-stearamide 11 parts, water 320 parts, and 60% concentration ethanol 13 parts.

[0018] Compared with the prior art, the present application has the following beneficial technical effects:

[0019] 1、The present application fills the filling cavity and the through cavity with the antiviral foam glue, so that the through cavity and the filling cavity are filled with the foam glue, and the antiviral foam glue has a large porosity, thereby achieving antibacterial and antiviral effects while having good air permeability, improving the air permeability of the leather, and increasing the resilience of the leather body, so that the leather or the cushion prepared from the leather body has high comfort, the antibacterial and antiviral molecules in the antiviral foam glue are continuously released into the base cloth layer and the adhesive layer through the filling cavity, thereby improving the antibacterial effect, and the antiviral foam glue filled in the through cavity and the filling cavity can be removed and replaced, so that the leather body can be repeatedly used, and the antibacterial and antiviral effect is better.

[0020] 2、The present application improves the antiviral effect of the surface layer by arranging the antiviral line, improves the tear resistance of the surface layer, prolongs the service life of the leather body, avoids the short wear and tear period of the leather body, and improves the mildew-proof effect of the leather body by soaking the whole leather body in the mildew-proof solution to penetrate the effective components in the mildew-proof solution into the whole leather body, and the antibacterial, mildew-proof and antiviral effects are better in combination with the use of the filling cavity and the through cavity.

[0021] 3. In summary, the leather of this invention has excellent antibacterial and bacteriostatic effects. By soaking in an anti-mildew solution, the overall anti-mildew effect of the leather is improved. The prepared leather has high breathability, thereby reducing the generation of sweat stains. At the same time, it has a high elasticity and softness, improving the comfort of using the leather. The antiviral foam can be replaced, improving the reusability and antiviral effect of the leather. Attached Figure Description

[0022] Figure 1 This is a front view of an antibacterial, antifungal, and antiviral leather.

[0023] Reference numerals: 1. Leather body; 101. Surface layer; 102. Adhesive layer; 103. Antibacterial layer; 104. Base fabric layer; 105. Filling cavity; 106. Through cavity; 107. Antiviral thread. Detailed Implementation

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1

[0026] like Figure 1 As shown, the present invention proposes an antibacterial, antifungal, and antiviral leather, comprising a leather body 1, the leather body 1 including a surface layer 101, an antiviral thread 107 being disposed through the surface layer 101, an adhesive layer 102 being provided on one side of the surface layer 101, an antibacterial layer 103 being connected to one side of the adhesive layer 102, a base fabric layer 104 being provided on one side of the antibacterial layer 103, a plurality of through cavities 106 being formed in the antibacterial layer 103, and a filling cavity 105 being provided between two adjacent through cavities 106, and the filling cavity 105 connecting the two through cavities 106, the antiviral thread 107 being a high-strength fiber thread, and the filling cavity 105 being filled with an antiviral foam adhesive, the antiviral foam adhesive comprising the following raw materials in parts by weight: 110 parts pressure-sensitive adhesive, 2.4 parts inorganic nano-silver, 0.35 parts antiviral additive, 0.65 parts accelerator, 0.2 parts wetting and dispersing agent, 0.2 parts thickener, and excipient. The formula includes 0.3-0.6 parts of agent, 0.03 parts of tetramethylguanidine trifluoromethane sulfonate, and 55 parts of water; the particle size of inorganic nano-silver is 0.2 nm; the antiviral adjuvant is dm3015N; the accelerator is 2-thiol benzothiazole; the excipient is a composition of polyvinyl alcohol, polyvinyl formal, polyvinylpyrrolidone, carboxymethyl cellulose, and sodium polyacrylate, with a mass ratio of 1.1:0.8:0.7:0.65:1.3; the thickener is acid-resistant propylene glycol alginate; the pressure-sensitive adhesive is an organosilicon-based pressure-sensitive adhesive, which is a composition of methyl silicone resin, methyl phenyl silicone resin, and phenyl vinyl silicone resin, with a mass ratio of 0.8-1.3-1.1.

[0027] Example 2

[0028] like Figure 1 As shown, the method for preparing antibacterial, antifungal, and antiviral leather proposed in this invention, compared with Example 1, further includes the following preparation steps:

[0029] Step 1: Immerse the antiviral thread 107 in an environmental liquid with a pH value between 6.5 and 7.2, and add 40% of the antiviral adjuvant liquid to the environmental solution. Stir and mix for 15 minutes. Add the remaining 60% of the antiviral adjuvant liquid again and stir and mix for 20 minutes. After the antiviral thread 107 has been immersed in the solution for 15 minutes, use a needle-threading device to thread the antiviral thread 107 through the surface layer 101.

[0030] Step 2: After pressing, hot-scalding and fat-adding treatments are performed on the surface layer 101, adhesive layer 102, antibacterial layer 103 and base fabric layer 104, leather body 1 is obtained. Antiviral foam is then filled into filling cavity 105 and through cavity 106.

[0031] Step 3: After filling, seal both ends of the through cavity 106, perform edge sealing treatment, and soak the entire leather body 1 in the anti-mold solution for 2 hours. After wiping and drying, the anti-mold leather can be obtained.

[0032] In this embodiment, the anti-mold solution comprises the following raw materials in parts by weight: 12 parts barbituric acid, 8 parts 4-benzyloxybenzoic acid, 5 parts rosin acid, 10 parts ethylene bis-stearamide, 300 parts water, and 10 parts ethanol with a concentration of 60%.

[0033] Example 3

[0034] like Figure 1 As shown, the method for preparing antibacterial, antifungal, and antiviral leather proposed in this invention, compared with Example 1 or Example 2, further includes the following preparation steps:

[0035] Step 1: Immerse the antiviral thread 107 in an environmental liquid with a pH value between 6.5 and 7.2, and add 40% of the antiviral adjuvant liquid to the environmental solution. Stir and mix for 15 minutes. Add the remaining 60% of the antiviral adjuvant liquid again and stir and mix for 20 minutes. After the antiviral thread 107 has been immersed in the solution for 15 minutes, use a needle-threading device to thread the antiviral thread 107 through the surface layer 101.

[0036] Step 2: After pressing, hot-scalding and fat-adding treatments are performed on the surface layer 101, adhesive layer 102, antibacterial layer 103 and base fabric layer 104, leather body 1 is obtained. Antiviral foam is then filled into filling cavity 105 and through cavity 106.

[0037] Step 3: After filling, seal both ends of the through cavity 106, perform edge sealing treatment, and soak the entire leather body 1 in the anti-mold solution for 2 hours. After wiping and drying, the anti-mold leather can be obtained.

[0038] In this embodiment, the anti-mold solution comprises the following raw materials in parts by weight: 17 parts barbituric acid, 16 parts 4-benzyloxybenzoic acid, 9 parts rosin acid, 12 parts ethylene bis-stearamide, 340 parts water, and 15 parts ethanol with a concentration of 60%.

[0039] Example 4

[0040] like Figure 1 As shown, the method for preparing antibacterial, antifungal, and antiviral leather proposed in this invention, compared with Example 1, Example 2, or Example 3, further includes the following preparation steps:

[0041] Step 1: Immerse the antiviral thread 107 in an environmental liquid with a pH value between 6.5 and 7.2, and add 40% of the antiviral adjuvant liquid to the environmental solution. Stir and mix for 15 minutes. Add the remaining 60% of the antiviral adjuvant liquid again and stir and mix for 20 minutes. After the antiviral thread 107 has been immersed in the solution for 15 minutes, use a needle-threading device to thread the antiviral thread 107 through the surface layer 101.

[0042] Step 2: After pressing, hot-scalding and fat-adding treatments are performed on the surface layer 101, adhesive layer 102, antibacterial layer 103 and base fabric layer 104, leather body 1 is obtained. Antiviral foam is then filled into filling cavity 105 and through cavity 106.

[0043] Step 3: After filling, seal both ends of the through cavity 106, perform edge sealing treatment, and soak the entire leather body 1 in the anti-mold solution for 2 hours. After wiping and drying, the anti-mold leather can be obtained.

[0044] In this embodiment, the anti-mold solution comprises the following raw materials in parts by weight: 15 parts barbituric acid, 12 parts 4-benzyloxybenzoic acid, 7 parts rosin acid, 11 parts ethylene bis-stearamide, 320 parts water, and 13 parts ethanol with a concentration of 60%.

[0045] The leather in Example 1 was treated using the preparation methods of Examples 2 to 4 to obtain antibacterial, antifungal, and antiviral leather. The performance of the antibacterial, antifungal, and antiviral leather prepared in Examples 2 to 4 was tested. Specific test items included: breathability, antibacterial properties, antiviral properties, and antifungal grade. The main antibacterial test items included Escherichia coli, Staphylococcus aureus, and Candida albicans. The test results are as follows:

[0046]

[0047] From the above data table, it can be seen that the air permeability, E. coli antibacterial rate, S. aureus antibacterial rate and C. albicans antibacterial rate of Example Three in the scheme are all higher than those of Example Two and Example Four, and therefore Example Three is the best scheme.

[0048] The above specific embodiments are only several preferred embodiments of the present application, and based on the technical scheme of the present application and the related inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. An antibacterial, antifungal and antiviral leather comprising a leather body (1), characterized in that: The leather body (1) comprises a surface layer (101), one side of the surface layer (101) is connected with an adhesive layer (102), one side of the adhesive layer (102) is connected with a bacteriostatic layer (103), one side of the bacteriostatic layer (103) is provided with a base cloth layer (104), a plurality of through cavities (106) are formed in the bacteriostatic layer (103), a filling cavity (105) is arranged between adjacent two through cavities (106), and the filling cavity (105) penetrates the two through cavities (106); The surface layer (101) is provided with an antiviral line (107) penetratingly arranged therein, the antiviral line (107) is a high-strength fiber line, and the filling cavity (105) is filled with antiviral foaming glue; The antiviral foaming glue comprises the following raw materials in parts by mass: 100-120 parts of pressure-sensitive adhesive, 1.2-3.6 parts of inorganic nano-silver, 0.2-0.5 parts of antiviral additive, 0.5-0.8 parts of accelerator, 0.1-0.3 parts of wetting dispersant, 0.1-0.3 parts of thickening agent, 0.3-0.6 parts of excipient, 0.01-0.05 parts of tetramethyl guanidine trifluoromethane sulfonate, and 50-60 parts of water.

2. The anti-bacterial, anti-mildew and anti-virus leather according to claim 1, characterized in that, The particle size of the inorganic nano-silver is 0.2 nm, the antiviral additive is dm3015N, the accelerator is 2 mercaptobenzothiazole, the excipient is a combination of polyvinyl alcohol, polyvinyl formal, polyvinyl pyrrolidone, carboxymethyl cellulose and sodium polyacrylate, the mass ratio of the polyvinyl alcohol, polyvinyl formal, polyvinyl pyrrolidone, carboxymethyl cellulose and sodium polyacrylate is 1.1:0.8:0.7:0.65:1.3, the thickening agent is acid-resistant propylene glycol alginate, the pressure-sensitive adhesive is a silicone pressure-sensitive adhesive, and the silicone pressure-sensitive adhesive is a combination of methyl silicone resin, methyl phenyl silicone resin and phenyl vinyl silicone resin, and the mass ratio of the methyl silicone resin, methyl phenyl silicone resin and phenyl vinyl silicone resin is 0.8-1.3-1.

1.

3. The anti-bacterial, anti-mildew and anti-virus leather according to claim 1, characterized in that, The antiviral foaming glue comprises the following raw materials in parts by mass: 100-120 parts of pressure-sensitive adhesive, 1.2-3.6 parts of inorganic nano-silver, 0.2-0.5 parts of antiviral additive, 0.5-0.8 parts of accelerator, 0.1-0.3 parts of wetting dispersant, 0.1-0.3 parts of thickening agent, 0.3-0.6 parts of excipient, 0.01-0.05 parts of tetramethyl guanidine trifluoromethane sulfonate, and 50-60 parts of water.

4. A method of producing the anti-bacterial, anti-mildew and anti-virus leather according to any one of claims 1 to 3, characterized in that, The following preparation steps are included: Step one: the antiviral line (107) is soaked in an environmental liquid with a pH value of 6.5-7.2, 40% of the antiviral additive liquid is added into the environmental solution, stirring and mixing for 15 min, the remaining 60% of the antiviral additive liquid is added again, stirring and mixing for 20 min, and after the antiviral line (107) is soaked for 15 min, the antiviral line (107) is connected from the surface layer (101) by a needle penetrating device; Step two: the surface layer (101), the adhesive layer (102), the bacteriostatic layer (103) and the base cloth layer (104) are obtained after being subjected to pressing, skinning and fatting treatment to obtain the leather body (1), and the antiviral foaming glue is filled in the filling cavity (105) and the through cavity (106). Step three: after filling, the both ends of the through cavity (106) are sealed, edge sealing treatment is carried out, the leather body (1) is soaked in the mildew-proof solution for 2h, and after wiping, drying is carried out, and a mildew-proof leather is obtained.

5. The method of preparing an anti-bacterial, anti-fungal and anti-viral leather as claimed in claim 4, wherein, The mildew-proof solution comprises the following raw materials in parts by mass: barbituric acid 12-17 parts, 4-benzyloxy benzoic acid 8-16 parts, abietic acid 5-9 parts, ethylene bis-stearamide 10-12 parts, water 300-340 parts, and 10-15 parts of ethanol with a concentration of 60%.

6. A method of preparing an anti-bacterial, anti-fungal and anti-viral leather as claimed in claim 5, wherein, The mildew-proof solution comprises the following raw materials in parts by mass: barbituric acid 12 parts, 4-benzyloxy benzoic acid 8 parts, abietic acid 5 parts, ethylene bis-stearamide 10 parts, water 300 parts, and 10 parts of ethanol with a concentration of 60%.

7. A method of preparing an anti-bacterial, anti-fungal and anti-viral leather as claimed in claim 6, wherein, The mildew-proof solution comprises the following raw materials in parts by mass: barbituric acid 17 parts, 4-benzyloxy benzoic acid 16 parts, abietic acid 9 parts, ethylene bis-stearamide 12 parts, water 340 parts, and 15 parts of ethanol with a concentration of 60%.

8. A method of preparing an anti-bacterial, anti-fungal and anti-viral leather as claimed in claim 7, wherein, The mildew-proof solution comprises the following raw materials in parts by mass: barbituric acid 15 parts, 4-benzyloxy benzoic acid 12 parts, abietic acid 7 parts, ethylene bis-stearamide 11 parts, water 320 parts, and 13 parts of ethanol with a concentration of 60%.

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