CN113278744A - Preparation method of cow leather containing bioactive components - Google Patents
Preparation method of cow leather containing bioactive components Download PDFInfo
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- CN113278744A CN113278744A CN202110627781.7A CN202110627781A CN113278744A CN 113278744 A CN113278744 A CN 113278744A CN 202110627781 A CN202110627781 A CN 202110627781A CN 113278744 A CN113278744 A CN 113278744A
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/04—Mineral tanning
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/22—Chemical tanning by organic agents using polymerisation products
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/28—Multi-step processes
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- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention provides a preparation method of a cow leather containing bioactive components, which comprises the steps of cleaning and degreasing, softening, tanning and bioactive component modification. The cow leather of the prepared microorganism is susceptible to the human body, the bacteriostasis rate of staphylococcus aureus is 95.5-96.2%, the bacteriostasis rate of escherichia coli is 94.6-95.7%, and the bacteriostasis rate of candida albicans is 95.3-96.9%; the prepared cow leather has the tensile strength of 19.8-20.7Mpa, the tearing strength of 44-46N/mm, difficult cracking, the shrinkage temperature of 97-99 ℃ and the elongation rate of 35.4-37.6% under the action of 10N load; the tanning process does not use a tanning agent containing aldehyde, and the tanning agent is not harmful to human bodies in the using process.
Description
Technical Field
The invention relates to a preparation method of a large biological cowhide containing bioactive components, belonging to the technical field of leather processing.
Background
The cowhide has wide application in the fields of clothes, shoes and hats, character carriers, medical treatment, packaging and the like, and in the deep processing process of the cowhide, hair, pores and impurities in the cowhide cannot be thoroughly removed by a plurality of traditional methods, so that the manufactured cowhide is rough and not smooth enough, and even a plurality of manufactured finished cowhide products are easy to breed bacteria from the inside, so that the corrosion is caused, and the quality is reduced.
In addition, the cow leather can have surface cracking and peeling phenomena after being used for a period of time.
CN105219893B discloses a processing technology of cow leather, which uses tanning agent containing aldehydes during tanning cow leather, has toxicity and can affect human health.
In summary, the existing cow leather has the following disadvantages:
(1) bacteria are easy to breed, so that the quality is reduced due to corrosion;
(2) the tanning preparation containing aldehyde can generate toxicity to human body;
(3) the produced leather product has insufficient strength, easy surface cracking and peeling and low shrinkage temperature.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art, and provide a preparation method of a large-organism cowhide containing bioactive components, so that the following purposes are realized:
(1) the bacteriostatic effect is good;
(2) the tanning agent does not contain toxic tanning agent, and does not cause damage to human bodies;
(3) high strength, not easy cracking and high shrinkage temperature.
In order to solve the technical problems, the invention adopts the following technical scheme:
the preparation method of the cow leather containing the bioactive components comprises the steps of cleaning and degreasing, softening, tanning and bioactive component modification.
The following is a further improvement of the above technical solution:
cleaning and degreasing, cleaning cowhide, placing into a sealed soaking pool, soaking in 0-5 deg.C soaking solution for 20-40min, heating to 4.5-5.5 deg.C every ten minutes, and soaking at 75-85 deg.C for 2-4 h.
The soaking solution comprises the following components in parts by weight: 8-12 parts of sodium hydroxide, 5-9 parts of sodium chloride, 1-3 parts of a degreasing agent, 1-3 parts of a bactericide, 1-2 parts of hydroxy ethylidene diphosphonate disodium, 1-2 parts of sulfonated succinic monoester salt and 45-55 parts of distilled water.
The degreasing agent is a combination of sodium dodecyl sulfate and glyceryl monostearate, and the mass ratio of the sodium dodecyl sulfate to the glyceryl monostearate is 1: 1-1.5.
And softening, namely placing the degreased cowhide in an ultrasonic device containing ultrasonic liquid for ultrasonic softening.
Each liter of ultrasonic liquid contains 3-7g of acetic acid, 10-15g of sodium formate, 2-7g of edible salt, 5-10g of sodium dodecyl benzene sulfonate and 5-10g of fatty alcohol-polyoxyethylene ether.
Tanning, adding softened cow leather into a rotary drum for tanning, adding water and an anti-twisting agent with the temperature of 20-30 ℃ into the rotary drum, and rotating for 7-12 min; adding organic silicon modified polyurethane resin, and rotating for 55-60 min; adding synthetic tanning solution containing enzyme, heating the drum to 35-40 deg.C, rotating for 55-65min, stopping for 25-35min, repeating for 5-7 times, discharging liquid, and taking out of the drum.
The mass percentage of the water relative to the softened cowhide is 25-35 wt%;
the mass percentage of the anti-twisting agent relative to the softened cowhide is 0.1-0.3 wt%;
the type of the anti-twisting agent is LM-3351A;
the mass percentage of the organic silicon modified polyurethane resin relative to the softened cowhide is 1-3 wt%;
the mass percentage of the synthetic tanning liquid containing the enzyme relative to the softened cowhide is 3-7 wt%.
The synthetic tanning liquid contains 10-15g of oil tanning agent, 35-45g of protease, 20-30g of sodium dodecyl sulfate, 15-25g of sodium persulfate and 25-35g of chromium powder per liter of synthetic tanning liquid;
the oil tanning agent is sulfochlorinated paraffin;
the protease consists of acid protease and acid lipase; the acid protease is 537 protease, the acid lipase is acid lipase from Aspergillus niger, and the mass ratio of the acid protease to the acid lipase is 1:1.
Modification of the bioactive components: soaking the tanned cow leather in oil liquid containing bioactive components at 55-65 deg.C, adding penetrant, and soaking for 3-5 h.
The oil liquid comprises, by weight, 7-10 parts of neat's foot oil, 3-7 parts of liquid paraffin, 3-7 parts of glycerin, 5-10 parts of plant extract oil and 10-20 parts of distilled water, and the oil liquid is prepared by heating, melting, stirring, mixing and decocting the components in parts by weight;
the bioactive component is plant extract oil;
the plant extract oil is peppermint extract oil, wormwood extract oil or green tea extract oil.
The penetrant is sulfated castor oil, and the mass percentage of the penetrant relative to the oil liquid is 3-7%.
The preparation method also comprises drying, wherein the drying is carried out for 24 hours in a ventilation drying mode at the temperature of 25-35 ℃, and the cow leather is prepared.
Compared with the prior art, the invention has the following beneficial effects:
(1) the cow leather of the prepared microorganism is susceptible to the human body, the bacteriostasis rate of staphylococcus aureus is 95.5-96.2%, the bacteriostasis rate of escherichia coli is 94.6-95.7%, and the bacteriostasis rate of candida albicans is 95.3-96.9%;
(2) the tensile strength of the prepared cow leather is 19.8-20.7Mpa, the tearing strength is 44-46N/mm, the cow leather is not easy to crack, the contraction temperature is as high as 97-99 ℃, and the elongation under the 10N load action is 35.4-37.6%;
(3) the tanning process does not use a tanning agent containing aldehyde, and the tanning agent is not harmful to human bodies in the using process.
Detailed Description
EXAMPLE 1 preparation of Biotic bovine hide containing bioactive ingredients
The method comprises the following steps:
(1) cleaning and degreasing
Soaking selected cowhide in a clean water tank for 4h, cleaning with clear water to remove part of soluble protein and remove blood stain and feces, placing the cleaned cowhide in a sealed soaking tank, soaking in a soaking solution at 2 deg.C for 30min, heating to 5 deg.C every ten minutes, and soaking at 80 deg.C for 3h to shrink and enlarge the pores of cowhide to remove internal hair and impurities, and to kill virus and sterilize;
the soaking solution comprises the following components in parts by weight: 10 parts of sodium hydroxide, 7 parts of sodium chloride, 2 parts of a degreasing agent, 2 parts of a bactericide, 1 part of hydroxy ethylidene diphosphonate disodium, 1 part of sulfonated succinic monoester salt and 50 parts of distilled water;
the degreasing agent is a combination of sodium dodecyl sulfate and glyceryl monostearate, and the mass ratio of the sodium dodecyl sulfate to the glyceryl monostearate is 1: 1;
the bactericide is tetracaine hydrochloride powder.
(2) Softening
Carrying out ultrasonic treatment on the degreased cowhide, putting the cowhide in an ultrasonic device containing ultrasonic liquid for 40 minutes, and taking out the cowhide; the ultrasonic power is 500W, the frequency is 50Hz, and the temperature is 30 ℃;
each liter of ultrasonic liquid contains 5g of acetic acid, 12g of sodium formate, 4g of edible salt, 7g of sodium dodecyl benzene sulfonate and 8g of fatty alcohol-polyoxyethylene ether; the mass ratio of the ultrasonic liquid to the degreased cow leather is 30: 1.
(3) Tanning
Adding softened cowhide into a rotary drum for tanning, adding 25 deg.C water 30 wt% (mass ratio of softened leather, the same as above) and 0.2 wt% of anti-twisting agent (model: LM-3351A) into the rotary drum, and rotating for 10 min; adding 2 wt% of organic silicon modified polyurethane resin, and rotating for 60 min; adding 5 wt% of synthetic tanning solution containing enzyme, heating the rotary drum to 37 deg.C, rotating for 60min, stopping for 30min, repeating for 6 times, discharging liquid, and taking out of the drum;
each liter of synthetic tanning liquid contains 12g of oil tanning agent, 40g of protease, 25g of lauryl sodium sulfate, 20g of sodium persulfate and 30g of chromium powder;
the oil tanning agent is sulfochlorinated paraffin;
the protease consists of acid protease and acid lipase; the acid protease is 537 protease, the acid lipase is acid lipase from Aspergillus niger, and the mass ratio of the acid protease to the acid lipase is 1:1.
(4) Modification of bioactive components: soaking the tanned cowhide in oil liquid containing bioactive components at 60 ℃, and adding a penetrating agent for soaking for 4 hours;
the oil liquid comprises the following components in parts by weight, 9 parts of neat's foot oil, 5 parts of liquid paraffin, 5 parts of glycerol, 7 parts of mint extract oil and 15 parts of distilled water, and the components in parts by weight are prepared by heating, melting, stirring, mixing and decocting;
the penetrant is sulfated castor oil, and the mass percentage of the penetrant relative to the oil liquid is 5%; (ii) a
The mass ratio of the oil to the tanned cowhide is 20: 1.
(5) Drying, and air drying at 30 deg.C for 24 hr to obtain Dabiota Kraft.
The beneficial effect of this embodiment does:
(1) the cow leather prepared by the method has the bacteriostatic rate of 96.2 percent on staphylococcus aureus, the bacteriostatic rate of escherichia coli of 95.7 percent and the bacteriostatic rate of candida albicans of 96.9 percent;
(2) the prepared cow leather has the tensile strength of 20.7Mpa, the tearing strength of 46N/mm, difficult cracking, the shrinkage temperature of 99 ℃ and the elongation of 37.6 percent under the action of 10N load;
(3) the preparation method of the cow leather does not use a tanning agent containing aldehyde in the tanning process, and is not harmful to human bodies in the using process.
EXAMPLE 2 preparation of Biotic bovine hide containing bioactive ingredients
The method comprises the following steps:
(1) cleaning and degreasing: putting selected cowhide into a clean water tank for soaking for 3h, cleaning by clean water to remove part of soluble protein and remove blood dirt and excrement, putting the cleaned cowhide into a sealed soaking tank, soaking in a soaking solution at 3 ℃ for 20min, raising the temperature for 5 ℃ every ten minutes, and finally soaking for 2h at 75 ℃ to ensure that pores of the cowhide are shrunk and enlarged to achieve the effects of removing internal hair and impurities, and killing and sterilizing;
the soaking solution comprises the following components in parts by weight: 8 parts of sodium hydroxide, 5 parts of sodium chloride, 1 part of degreasing agent, 1 part of bactericide, 1 part of hydroxy ethylidene diphosphonate disodium, 1 part of sulfonated succinic monoester salt and 45 parts of distilled water;
the degreasing agent is a combination of sodium dodecyl sulfate and glyceryl monostearate, and the mass ratio of the sodium dodecyl sulfate to the glyceryl monostearate is 1: 1;
the bactericide is tetracaine hydrochloride powder.
(2) Softening
Carrying out ultrasonic treatment on the degreased cowhide, putting the cowhide in an ultrasonic device containing ultrasonic liquid for 30 minutes, and taking out the cowhide; the ultrasonic power is 400W, the frequency is 40Hz, and the temperature is 20 ℃;
each liter of ultrasonic liquid contains 3g of acetic acid, 10g of sodium formate, 2g of edible salt, 5g of sodium dodecyl benzene sulfonate and 5g of fatty alcohol-polyoxyethylene ether; the mass ratio of the ultrasonic liquid to the degreased cow leather is 25: 1.
(3) Tanning
Adding softened cowhide into a rotary drum for tanning, adding 25 wt% of water (the percentage is the mass ratio of softened leather, the same as the above) at 20 ℃ and 0.1 wt% of anti-twisting agent (LM-3351A) into the rotary drum, and rotating for 7 min; adding 1 wt% of organic silicon modified polyurethane resin, and rotating for 60 min; adding 3 wt% of synthetic tanning solution containing enzyme, heating the rotary drum to 35 deg.C, rotating for 60min, stopping for 30min, repeating for 6 times, discharging liquid, and taking out of the drum;
each liter of synthetic tanning liquid contains 10g of oil tanning agent, 35g of protease, 20g of lauryl sodium sulfate, 15g of sodium persulfate and 25g of chromium powder;
the oil tanning agent is sulfochlorinated paraffin;
the protease consists of acid protease and acid lipase; the acid protease is 537 protease, the acid lipase is acid lipase from Aspergillus niger, and the mass ratio of the acid protease to the acid lipase is 1:1.
(4) Modification of bioactive components: soaking the tanned cowhide in oil liquid containing bioactive components at 55 ℃, and adding a penetrating agent for soaking for 3 hours;
the oil liquid comprises the following components, by weight, 7 parts of neat's foot oil, 3 parts of liquid paraffin, 3 parts of glycerol, 5 parts of wormwood extraction oil and 10 parts of distilled water, and the components are prepared by heating, melting, stirring, mixing and decocting;
the penetrant is sulfated castor oil, and the mass percentage of the penetrant relative to the oil liquid is 3%; (ii) a
The mass ratio of the oil liquid to the tanned cowhide is 15: 1.
(5) Drying, and air drying at 25 deg.C for 24 hr to obtain Dabiota Kraft.
The effect of this embodiment is:
(1) the bacteriostatic rate of the prepared staphylococcus aureus of the cow leather is 95.5 percent, the bacteriostatic rate of escherichia coli is 94.6 percent, and the bacteriostatic rate of candida albicans is 95.3 percent;
(2) the prepared cow leather has the tensile strength of 19.8Mpa, the tearing strength of 44N/mm, difficult cracking, the shrinkage temperature of 97 ℃ and the elongation of 35.4 percent under the action of 10N load;
(3) the preparation method of the cow leather does not use a tanning agent containing aldehyde in the tanning process, and is not harmful to human bodies in the using process.
EXAMPLE 3 preparation of Biotic bovine hide containing bioactive ingredients
The method comprises the following steps:
(1) cleaning and degreasing: putting selected cowhide into a clean water tank for soaking for 5h, cleaning with clean water to remove part of soluble protein and remove blood dirt and excrement, putting the cleaned cowhide into a sealed soaking tank, soaking in a soaking solution at 5 ℃ for 40min, raising the temperature for 5 ℃ every ten minutes, and finally soaking for 4h at 85 ℃ to shrink and enlarge pores of the cowhide so as to achieve the effects of removing internal hair and impurities, and killing and sterilizing;
the soaking solution comprises the following components in parts by weight: 12 parts of sodium hydroxide, 9 parts of sodium chloride, 3 parts of a degreasing agent, 3 parts of a bactericide, 2 parts of hydroxy ethylidene diphosphonate disodium, 2 parts of sulfonated succinic monoester salt and 55 parts of distilled water;
the degreasing agent is a combination of sodium dodecyl sulfate and glyceryl monostearate, and the mass ratio of the sodium dodecyl sulfate to the glyceryl monostearate is 1: 1.5;
the bactericide is tetracaine hydrochloride powder.
(2) Softening
Carrying out ultrasonic treatment on the degreased cowhide, putting the cowhide in an ultrasonic device containing ultrasonic liquid for 50 minutes, and taking out the cowhide; the ultrasonic power is 600W, the frequency is 60Hz, and the temperature is 40 ℃;
each liter of ultrasonic liquid contains 7g of acetic acid, 15g of sodium formate, 7g of edible salt, 10g of sodium dodecyl benzene sulfonate and 10g of fatty alcohol-polyoxyethylene ether; the mass ratio of the ultrasonic liquid to the degreased cow leather is 35: 1.
(3) Tanning
Adding softened cowhide into a rotary drum for tanning, adding 35 wt% of water (the percentage is the mass ratio of softened leather, the same as the above) with the temperature of 30 ℃ and 0.3 wt% of anti-twisting agent (LM-3351A) into the rotary drum, and rotating for 12 min; adding 3 wt% of organic silicon modified polyurethane resin, and rotating for 60 min; adding 7 wt% of synthetic tanning solution containing enzyme, heating the rotary drum to 40 deg.C, rotating for 60min, stopping for 30min, repeating for 6 times, discharging liquid, and taking out of the drum;
each liter of synthetic tanning liquid contains 15g of oil tanning agent, 45g of protease, 30g of lauryl sodium sulfate, 25g of sodium persulfate and 35g of chromium powder;
the oil tanning agent is sulfochlorinated paraffin;
the protease consists of acid protease and acid lipase; the acid protease is 537 protease, the acid lipase is acid lipase from Aspergillus niger, and the mass ratio of the acid protease to the acid lipase is 1:1.
(4) Modification of bioactive components: soaking the tanned cow leather in oil liquid containing bioactive components at 55-65 ℃, and adding a penetrating agent for soaking for 3-5 h;
the oil liquid comprises the following components, by weight, 10 parts of neat's foot oil, 7 parts of liquid paraffin, 7 parts of glycerol, 10 parts of green tea extract oil and 20 parts of distilled water, and the components are prepared by heating, melting, stirring, mixing and decocting;
the penetrant is sulfated castor oil, and the mass percentage of the penetrant relative to the oil liquid is 7%; (ii) a
The mass ratio of the oil liquid to the tanned cowhide is 25: 1.
(5) Drying, and air drying at 35 deg.C for 24 hr to obtain Dabiota Kraft.
The effect of this embodiment is:
(1) the cow leather prepared by the method has the bacteriostatic rate of 95.9 percent on staphylococcus aureus, the bacteriostatic rate of escherichia coli of 95.2 percent and the bacteriostatic rate of candida albicans of 96.1 percent;
(2) the prepared cow leather has the tensile strength of 20.3Mpa, the tearing strength of 45N/mm, difficult cracking, the shrinkage temperature of 98 ℃ and the elongation of 36.5 percent under the action of 10N load;
(3) the preparation method of the cow leather does not use a tanning agent containing aldehyde in the tanning process, and is not harmful to human bodies in the using process.
Claims (10)
1. The preparation method of the cow leather containing the bioactive components is characterized by comprising the steps of cleaning and degreasing, softening, tanning and bioactive component modification.
2. The method of claim 1, wherein the method comprises the steps of:
cleaning and degreasing, cleaning cowhide, placing into a sealed soaking pool, soaking in 0-5 deg.C soaking solution for 20-40min, heating to 4.5-5.5 deg.C every ten minutes, and soaking at 75-85 deg.C for 2-4 h.
3. The method of preparing a biolipid containing bioactive components as claimed in claim 2, wherein: the soaking solution comprises the following components in parts by weight: 8-12 parts of sodium hydroxide, 5-9 parts of sodium chloride, 1-3 parts of a degreasing agent, 1-3 parts of a bactericide, 1-2 parts of disodium hydroxyethylidene diphosphonate, 1-2 parts of sulfonated succinic monoester salt and 45-55 parts of distilled water;
the degreasing agent is a combination of sodium dodecyl sulfate and glyceryl monostearate, and the mass ratio of the sodium dodecyl sulfate to the glyceryl monostearate is 1: 1-1.5.
4. The method of claim 1, wherein the method comprises the steps of:
softening, namely placing the degreased cowhide in an ultrasonic device containing ultrasonic liquid for ultrasonic softening;
each liter of ultrasonic liquid contains 3-7g of acetic acid, 10-15g of sodium formate, 2-7g of edible salt, 5-10g of sodium dodecyl benzene sulfonate and 5-10g of fatty alcohol-polyoxyethylene ether.
5. The method of claim 1, wherein the method comprises the steps of:
tanning, adding softened cow leather into a rotary drum for tanning, adding water and an anti-twisting agent with the temperature of 20-30 ℃ into the rotary drum, and rotating for 7-12 min; adding organic silicon modified polyurethane resin, and rotating for 55-60 min; adding synthetic tanning solution containing enzyme, heating the drum to 35-40 deg.C, rotating for 55-65min, stopping for 25-35min, repeating for 5-7 times, discharging liquid, and taking out of the drum.
6. The method of claim 5, wherein the method comprises the steps of:
the mass percentage of the water relative to the softened cowhide is 25-35 wt%;
the mass percentage of the anti-twisting agent relative to the softened cowhide is 0.1-0.3 wt%;
the type of the anti-twisting agent is LM-3351A;
the mass percentage of the organic silicon modified polyurethane resin relative to the softened cowhide is 1-3 wt%;
the mass percentage of the synthetic tanning liquid containing the enzyme relative to the softened cowhide is 3-7 wt%.
7. The method of claim 6, wherein the method comprises the steps of:
the synthetic tanning liquid contains 10-15g of oil tanning agent, 35-45g of protease, 20-30g of sodium dodecyl sulfate, 15-25g of sodium persulfate and 25-35g of chromium powder per liter of synthetic tanning liquid;
the oil tanning agent is sulfochlorinated paraffin;
the protease consists of acid protease and acid lipase; the acid protease is 537 protease, the acid lipase is acid lipase from Aspergillus niger, and the mass ratio of the acid protease to the acid lipase is 1:1.
8. The method of claim 1, wherein the method comprises the steps of:
modification of the bioactive components: soaking the tanned cow leather in oil liquid containing bioactive components at 55-65 deg.C, adding penetrant, and soaking for 3-5 h.
9. The method of claim 8, wherein the method comprises the steps of:
the oil liquid comprises, by weight, 7-10 parts of neat's foot oil, 3-7 parts of liquid paraffin, 3-7 parts of glycerin, 5-10 parts of bioactive components and 10-20 parts of distilled water, and the oil liquid is prepared by heating, melting, stirring, mixing and decocting the components in parts by weight;
the penetrant is sulfated castor oil, and the mass percentage of the penetrant relative to the oil liquid is 3-7%.
10. The method of claim 1, wherein the method comprises the steps of:
the preparation method also comprises drying, wherein the drying is carried out for 24 hours in a ventilation drying mode at the temperature of 25-35 ℃, and the cow leather is prepared.
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|---|---|---|---|---|
| CN115181821A (en) * | 2022-07-12 | 2022-10-14 | 百草边大生物科技(青岛)有限公司 | Preparation method of antiviral cow leather containing tea active ingredients |
| CN115181821B (en) * | 2022-07-12 | 2024-05-17 | 百草边大生物科技(青岛)有限公司 | Preparation method of antiviral large biological cow leather containing tea active ingredients |
| CN115772586A (en) * | 2022-12-08 | 2023-03-10 | 百草边大生物科技(青岛)有限公司 | Preparation method of antibacterial odor-removing cowhide containing folium pini massonianae and cedar wood extract |
| CN115772586B (en) * | 2022-12-08 | 2024-04-09 | 百草边大生物科技(青岛)有限公司 | Preparation method of antibacterial and peculiar smell removing cow leather containing pinus massoniana needle and cedarwood extracts |
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| CN113278744B (en) | 2022-04-01 |
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