CN108048605A - The processing technology of Waterproof Leather - Google Patents
The processing technology of Waterproof Leather Download PDFInfo
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- CN108048605A CN108048605A CN201711384459.6A CN201711384459A CN108048605A CN 108048605 A CN108048605 A CN 108048605A CN 201711384459 A CN201711384459 A CN 201711384459A CN 108048605 A CN108048605 A CN 108048605A
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Classifications
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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
-
- 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
- C14C3/06—Mineral tanning using chromium compounds
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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
-
- 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
-
- 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
-
- 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
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
- C14C9/02—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring
-
- 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
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
- C14C9/04—Fixing tanning agents in the leather
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
This application involves the processing technologys of Waterproof Leather, comprise the following steps：Step 1：Pending leather is subjected to pickling processes；Step 2：Leather after pickling processes is subjected to retanning processing under the action of retanning agent, retanning agent is melamine class retanning agent；Step 3：By retanning treated leather carries out under the action of retanning filler and coloring agent retanning filling, dyeing processing, retanning filling leather is obtained；Retanning filler is the acrylic resin that active ingredient is 32%；Step 4：Retanning filling leather is subjected to stuffing processing under the action of waterproof currying agent；Step 5：By stuffing, treated that processing is fixed in leather under the action of chrome tanning agent；The chrome tanning agent is chrome green.The processing technology for the Waterproof Leather that the application provides is simple, reduces the dosage of material, has both saved cost, while improves the water resistance of resultant Leather.
Description
Technical field
This application involves the processing technique field of leather more particularly to the processing technologys of Waterproof Leather.
Background technology
Leather be through depilation and the physics such as tanning, chemical process is obtained has been denatured not perishable Animal Skin, by
Natural protein fibre is formed in three dimensions close weave.There is a kind of special grain layer on the surface of leather, has natural
Graining and gloss, comfortable feel.Leather is meeting water, is easily being changed colour by the time of tide, influences the beauty and snugness of fit of its manufactured goods.
It is also more and more to the research of the processing technology of Waterproof Leather as requirement of the people to leather and fur products is higher and higher.
At present, there is a kind of processing method of anti-buffalo hide leather, including being rinsed successively to wet blue, retanning, neutralize, fill out
Fill, dye, stuffing, fixation treatment, wherein, be separately added into dubbin in retanning, filling and stuffing processing step；Wherein retanning
Step is as follows：Skin after rinsing adds in water, dyestuff turns 10-20min, adds in melamine class retanning agent afterwards and turns 20-
40min adds acrylate resin tanning agent and turns 30min；It adds in dubbin and turns 30min；Then in mass ratio 1:1:1 adds in chromium
Turn 60min after powder, chromium tannin and more metal retanning agents, the ox-hide leather prepared using this method has preferable waterproof effect.
However, raw materials consumption is more in above-mentioned Waterproof Leather processing method, cause cost of material higher, such as fixative chromic salts
Larger with the dosage of dubbin, chromium ion has larger toxicity in addition, has to environment, the ecological balance and human health undesirable
It influences.Therefore, need to propose a kind of processing technology of few, good water-proof effect the Waterproof Leather of material dosage at present.
The content of the invention
This application provides the processing technologys of Waterproof Leather, reduce the dosage of material, while improve the waterproof of resultant Leather
Performance.
This application provides the processing technologys of Waterproof Leather, comprise the following steps：
Step 1：Pending leather is subjected to pickling processes；
Step 2：Leather after pickling processes is subjected to retanning processing under the action of retanning agent, the retanning agent is three
Paracyanogen amine retanning agent；
Step 3：By retanning treated leather carries out under the action of retanning filler and coloring agent retanning filling, dye
Color processing obtains retanning filling leather；The retanning filler is the acrylic resin that active ingredient is 32%；
Step 4：Retanning filling leather is subjected to stuffing processing under the action of waterproof currying agent；
Step 5：By stuffing, treated that processing is fixed in leather under the action of chrome tanning agent；The chrome tanning agent is three
Aoxidize two chromium.
Optionally, the quality that the chrome tanning agent is added in during fixing process is the 4% of leather quality.
Optionally, the quality that the retanning agent is added in when retanning is handled is the 2% of leather quality.
Optionally, the quality that the waterproof currying agent is added in when stuffing is handled is the 7% of leather quality.
Optionally, the pickling processes process described in step 1 specifically includes following steps：Scytoblastema in drum unit is with 100
Listed as parts by weight adds in 30~35 DEG C of water, the formic acid of 0.3 parts by weight of 200 parts by weight, rotates 30 minutes.
Optionally, the retanning processing procedure described in step 2 specifically includes following steps：Scytoblastema in drum unit is with 100
Listed as parts by weight adds in 35~38 DEG C of water of 100 parts by weight, adds in retanning agent, rotates 10 minutes, adds 42 DEG C of water, protects
It is 35~38 DEG C to hold water temperature in drum unit, and the pH value of leather is 3.9~4.0；Stand 24 it is small when after, rotate 20 minutes, discharge useless
It washes, is neutralized after liquid；The water that 100 parts by weight temperature are 35~38 DEG C is added in, adds in 3 parts by weight sodium formates, is rotated
After twenty minutes, 2 parts by weight sodium bicarbonate are added in, rotates 100 minutes, discharges waste liquid, rinse leather 1 time with flowing water, washing time is
10 minutes.
Optionally, the retanning filling described in step 3, dyeing processing procedure specifically include following steps：In drum unit
Scytoblastema adds in retanning filler with 100 listed as parts by weight, 34~36 DEG C of water of 150 parts by weight of addition, rotates after sixty minutes,
The coloring agent of 3 parts by weight is added in, rotates the formic acid for adding in 0.3 parts by weight after forty minutes, rotates after ten minutes, stands 20 minutes,
It is washed after discharging waste liquid.
Optionally, the stuffing processing procedure described in step 4 specifically includes following steps：Scytoblastema in drum unit is with 100
Listed as parts by weight adds in 60 DEG C of water of 100 parts by weight, adds in waterproof currying agent, rotates 90 minutes, adds in 0.3 parts by weight
Formic acid is rotated 30 minutes, washed after discharging waste liquid.
Optionally, the fixing process process described in step 5 specifically includes following steps：Scytoblastema in drum unit is with 100
Listed as parts by weight adds in 45~48 DEG C of water of 100 parts by weight, adds in chrome tanning agent, after rotating 120 minutes, waste liquid is discharged, with stream
Water rinses leather 2 times, and each washing time is 10 minutes, goes out drum after rinsing and takes code, dry.
By above technical scheme, this application provides a kind of processing technologys of Waterproof Leather, use melamine class retanning agent
Retanning processing is carried out to the leather after pickling processes, treated that leather is answered to retanning by acrylic resin and coloring agent
Tan filling, dyeing processing after obtaining retanning filling leather, add in waterproof currying agent and carry out stuffing processing to leather, and pass through few
The chrome green of amount fixes the multivalent metal salt in leather, and waterproof currying agent and metal is made to generate metal fatty acid complex,
Waterproof material is made to be fixed in leather fiber, reduces surface tension of the leather to water.The processing technology side for the Waterproof Leather that the application provides
Method is simple, reduces the dosage of material, has both saved cost, while improves the water resistance of resultant Leather.
Specific embodiment
This application provides the processing technologys of Waterproof Leather, comprise the following steps：
Step 1：Pending leather is subjected to pickling processes；
Step 2：Leather after pickling processes is subjected to retanning processing under the action of retanning agent, the retanning agent is three
Paracyanogen amine retanning agent；
Step 3：By retanning treated leather carries out under the action of retanning filler and coloring agent retanning filling, dye
Color processing obtains retanning filling leather；The retanning filler is the acrylic resin that active ingredient is 32%；
Step 4：Retanning filling leather is subjected to stuffing processing under the action of waterproof currying agent；
Step 5：By stuffing, treated that processing is fixed in leather under the action of chrome tanning agent；The chrome tanning agent is three
Aoxidize two chromium.
The normal production process of traditional Waterproof Leather include carry out successively batching, immersion, depilation liming, fleshing, split,
Deliming, pickling, chrome tanning, water squeezing, shaving, retanning, neutralization, dyeing, stuffing, stretching, extension, vacuum drying, rotary drum fall soft, extension and dry in the air, return
Tide draws the processes such as soft, vacuum drying, buffing, ironing, whitewashing, measurement, packaging, shipment.Using traditional Waterproof Leather production technology
The Waterproof Leather of preparation can also play certain waterproof effect, but the normal production process of traditional Waterproof Leather is various, raw material
More, complex process causes the consumption of a large amount of materials, adds production cost, to ecological environment and human health there is also
Certain harm.
The application improves traditional Waterproof Leather processing technology, after adjusting process, reduces the dosage of material, such as
The dosage of chrome tanning agent chrome green and waterproof currying agent has not only saved production cost, but also reduces dirt of the chromium ion to environment
Dye, while improve the water resistance of resultant Leather.The Waterproof Leather processing technology that the application provides shortens work and continues, and has saved energy
Source, i.e. electric consumption, reduce the working time (i.e. labor intensity) of worker, improve production efficiency.Meanwhile material in technique
With the reduction of process, Waterproof Leather yield is improved, makes resultant Leather water resistance more preferable, raw hide is maintained and removes from office more characteristics, from
It is however beautiful.
Optionally, the quality that the chrome tanning agent is added in during fixing process is the 4% of leather quality.The chrome tanning agent is three oxygen
Change two chromium, content 25%.The addition of the chrome tanning agent can make waterproof currying agent and metal generate metal fatty acid complex, make
Waterproof material is fixed in leather fiber, surface tension of the leather to water is reduced, so as to improve the water resistance of leather.
Optionally, the quality that the retanning agent is added in when retanning is handled is the 2% of leather quality.The retanning agent is trimerization
Cyanamide class retanning agent for the water resistance for having had finished leather, in the procedure for wet processing of water field, not have to surface-active as far as possible
Agent and the auxiliary agent with polarity charge, it is as far as possible few with or without hydrophilic retanning agent when selecting retanning agent, because most of multiple
Tanning agent can reduce the water proofing property of leather.Retanning processing is carried out using melamine class Retanning Agent on Leather, it is possible to reduce in bearing
The dosage of chrome tanning agent chrome green is added in during reason, material is saved, reduces environmental pollution.
Optionally, the quality that the waterproof currying agent is added in when stuffing is handled is the 7% of leather quality.The waterproof stuffing
Agent is GEMNFAT waterproof currying agents and GEMNWD waterproof currying agents, and the mass ratio of the two is 1:1.When selecting dubbing,
Select the compound of silicone, GEMNFAT waterproof currying agents and the compound that GEMNWD waterproof currying agents are silicone, this kind ofization
Object is closed, has good water repellency and gas permeability to leather；Also fluorine compounds and fluorine-containing even aliphatic acid, this kind of substance, which can be selected, to be carried
High leather water-proof and the performance for refusing greasy dirt.
Optionally, the pickling processes process described in step 1 specifically includes following steps：Scytoblastema in drum unit is with 100
Listed as parts by weight adds in 30~35 DEG C of water, the formic acid of 0.3 parts by weight of 200 parts by weight, rotates 30 minutes.First to leather
Pickling processes are carried out, bating can be made, in the procedure for wet processing of water field, make resultant Leather that there is preferable water resistance,
Pickling processes are carried out to leather first, then carry out retanning processing.
Optionally, the retanning processing procedure described in step 2 specifically includes following steps：Scytoblastema in drum unit is with 100
Listed as parts by weight adds in 35~38 DEG C of water of 100 parts by weight, adds in retanning agent, rotates 10 minutes, adds 42 DEG C of water, protects
It is 35~38 DEG C to hold water temperature in drum unit, and the pH value of leather is 3.9~4.0；Stand 24 it is small when after, rotate 20 minutes, discharge useless
It washes, is neutralized after liquid；The water that 100 parts by weight temperature are 35~38 DEG C is added in, adds in 3 parts by weight sodium formates, is rotated
After twenty minutes, 2 parts by weight sodium bicarbonate are added in, rotates 100 minutes, discharges waste liquid, rinse leather 1 time with flowing water, washing time is
10 minutes.The retanning processing procedure includes retanning process and N-process, is carried out using melamine class Retanning Agent on Leather
After retanning processing, the pH value of leather is adjusted using sodium formate and sodium bicarbonate, its pH value is adjusted to 3.6~3.8.Its
In, the control longer neutralization time is conducive to thoroughly neutralize leather, is so also beneficial to waterproof currying agent and is oozed deeper into ground
It thoroughly and is uniformly distributed, the water resistance of resultant Leather can be improved.
Optionally, the retanning filling described in step 3, dyeing processing procedure specifically include following steps：In drum unit
Scytoblastema adds in retanning filler with 100 listed as parts by weight, 34~36 DEG C of water of 150 parts by weight of addition, rotates after sixty minutes,
The coloring agent of 3 parts by weight is added in, rotates the formic acid for adding in 0.3 parts by weight after forty minutes, rotates after ten minutes, stands 20 minutes,
It is washed after discharging waste liquid, leather is rinsed using sufficient clear water, in case handling in next step.
Optionally, the stuffing processing procedure described in step 4 specifically includes following steps：Scytoblastema in drum unit is with 100
Listed as parts by weight adds in 60 DEG C of water of 100 parts by weight, adds in waterproof currying agent, rotates 90 minutes, adds in 0.3 parts by weight
Formic acid is rotated 30 minutes, washed after discharging waste liquid.In the production of Waterproof Leather, each production link will be operated strictly,
During weighing, charging, never permitted with hydrophilic impurity, the instrument of operation will be clean, and stuffing will control water when handling
Temperature, water temperature control are that can ensure that the fully emulsified of grease at 60 DEG C, 60 DEG C.Ensure the longer stuffing time, be to make stuffing
Agent and dubbin penetrate deep into, and are uniformly distributed, and the cross section entirely removed from office is made to have hydrophobic effect.
Optionally, the fixing process process described in step 5 specifically includes following steps：Scytoblastema in drum unit is with 100
Listed as parts by weight adds in 45~48 DEG C of water of 100 parts by weight, adds in chrome tanning agent, after rotating 120 minutes, waste liquid is discharged, with stream
Water rinses leather 2 times, and each washing time is 10 minutes, goes out drum after rinsing and takes code, dry.To the fixing process process of leather
Mainly to the fixation of multivalent metal salt in leather.It is only fully prolonged fixed, fatting agent and polyvalent metal can just given birth to
Into metal fatty acid complex, waterproof material is made to be fixed in leather fiber, reduce surface tension of the leather to water.Terminate per procedure
After be intended to wash leather, rinse leather for a long time with sufficient flowing water, with remove remain in leather in free residue,
It reduces and these impurity is to the affinity of water, improve resultant Leather water resistance.
Waterproof Leather prepared by the application, water resistance are：Dynamic water-proof 2.0~3.0 ten thousand/time, when static waterproof 48 is small,
Infiltration is no more than the 10% of leather weight itself；It tears burst strength：Longitudinal direction is less than 30N/cm2, horizontal 20N/cm2；Combustion completely
After burning, the impurity in leather is no more than 3%, and remaining chromium is no more than 1mg/kg, and ash is no more than 1% in resultant Leather.Thus may be used
See, the Waterproof Leather of the processing technology preparation of the Waterproof Leather proposed using the application is while material dosage is reduced, it is ensured that
Skin finished leather is solid, hence it is evident that improves the tearing strength of leather.
By above technical scheme, this application provides a kind of processing technologys of Waterproof Leather, use melamine class retanning agent
Retanning processing is carried out to the leather after pickling processes, treated that leather is answered to retanning by acrylic resin and coloring agent
Tan filling, dyeing processing after obtaining retanning filling leather, add in waterproof currying agent and carry out stuffing processing to leather, and pass through few
The chrome green of amount fixes the multivalent metal salt in leather, and waterproof currying agent and metal is made to generate metal fatty acid complex,
Waterproof material is made to be fixed in leather fiber, reduces surface tension of the leather to water.The processing technology side for the Waterproof Leather that the application provides
Method is simple, reduces the dosage of material, has both saved cost, while improves the water resistance of resultant Leather.
The above is only the specific embodiment of the application, is made skilled artisans appreciate that or realizing this Shen
Please.A variety of modifications of these embodiments will be apparent to one skilled in the art, it is as defined herein
General Principle can in other embodiments be realized in the case where not departing from spirit herein or scope.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
It should be appreciated that the application is not limited to the content being described above, and its model can not departed from
It encloses and carry out various modifications and change.Scope of the present application is only limited by appended claim.
Claims (9)
1. the processing technology of Waterproof Leather, which is characterized in that comprise the following steps：
Step 1：Pending leather is subjected to pickling processes；
Step 2：Leather after pickling processes is subjected to retanning processing under the action of retanning agent, the retanning agent is melamine
Amine retanning agent；
Step 3：Retanning treated leather is carried out under the action of retanning filler and coloring agent to retanning filling, at dyeing
Reason obtains retanning filling leather；The retanning filler is the acrylic resin that active ingredient is 32%；
Step 4：Retanning filling leather is subjected to stuffing processing under the action of waterproof currying agent；
Step 5：By stuffing, treated that processing is fixed in leather under the action of chrome tanning agent；The chrome tanning agent is three oxidations
Two chromium.
2. the processing technology of Waterproof Leather according to claim 1, which is characterized in that the chrome tanning agent is added in during fixing process
Quality be leather quality 4%.
3. the processing technology of Waterproof Leather according to claim 1, which is characterized in that retanning adds in the retanning agent when handling
Quality be leather quality 2%.
4. the processing technology of Waterproof Leather according to claim 1, which is characterized in that stuffing adds in the waterproof when handling and adds
The quality of fat agent is the 7% of leather quality.
5. the processing technology of Waterproof Leather according to claim 1, which is characterized in that the pickling processes mistake described in step 1
Journey specifically includes following steps：Scytoblastema in drum unit with 100 listed as parts by weight, add in 200 parts by weight 30~35 DEG C of water,
The formic acid of 0.3 parts by weight rotates 30 minutes.
6. the processing technology of Waterproof Leather according to claim 1, which is characterized in that the retanning described in step 2 treats
Journey specifically includes following steps：Scytoblastema in drum unit adds in 35~38 DEG C of water of 100 parts by weight with 100 listed as parts by weight,
Retanning agent is added in, is rotated 10 minutes, adds 42 DEG C of water, it is 35~38 DEG C to keep water temperature in drum unit, and the pH value of leather is 3.9
~4.0；Stand 24 it is small when after, rotate 20 minutes, wash, be neutralized after discharging waste liquid；Adding in 100 parts by weight temperature is
35~38 DEG C of water adds in 3 parts by weight sodium formates, rotates after twenty minutes, adds in 2 parts by weight sodium bicarbonate, rotates 100 minutes, put
Complete waste liquid rinses leather 1 time with flowing water, and washing time is 10 minutes.
7. the processing technology of Waterproof Leather according to claim 1, which is characterized in that described in step 3 retanning filling,
Dyeing processing procedure specifically includes following steps：Scytoblastema in drum unit adds in the 34 of 150 parts by weight with 100 listed as parts by weight
~36 DEG C of water adds in retanning filler, rotates the coloring agent for adding in 3 parts by weight after sixty minutes, rotates after forty minutes, adds in
The formic acid of 0.3 parts by weight rotates after ten minutes, stands 20 minutes, washed after discharging waste liquid.
8. the processing technology of Waterproof Leather according to claim 1, which is characterized in that the stuffing described in step 4 treats
Journey specifically includes following steps：Scytoblastema in drum unit is added in 60 DEG C of water of 100 parts by weight, is added in 100 listed as parts by weight
Waterproof currying agent rotates 90 minutes, adds in the formic acid of 0.3 parts by weight, rotates 30 minutes, is washed after discharging waste liquid.
9. the processing technology of Waterproof Leather according to claim 1, which is characterized in that the fixing process mistake described in step 5
Journey specifically includes following steps：Scytoblastema in drum unit adds in 45~48 DEG C of water of 100 parts by weight with 100 listed as parts by weight,
Chrome tanning agent is added in, after rotating 120 minutes, discharges waste liquid, rinses leather 2 times with flowing water, each washing time is 10 minutes, is rinsed
Go out drum after complete and take code, it is dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711384459.6A CN108048605A (en) | 2017-12-20 | 2017-12-20 | The processing technology of Waterproof Leather |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711384459.6A CN108048605A (en) | 2017-12-20 | 2017-12-20 | The processing technology of Waterproof Leather |
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| CN108048605A true CN108048605A (en) | 2018-05-18 |
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| CN201711384459.6A Pending CN108048605A (en) | 2017-12-20 | 2017-12-20 | The processing technology of Waterproof Leather |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108707707A (en) * | 2018-06-05 | 2018-10-26 | 嘉兴学院 | A kind of waterproof antistatic stuffing technique for leather processing |
| CN110791598A (en) * | 2019-11-18 | 2020-02-14 | 宁夏金海皮业有限责任公司 | Processing method of waterproof cattle vamp leather |
| CN112376297A (en) * | 2020-08-26 | 2021-02-19 | 焦作隆丰皮草企业有限公司 | Waterproof agent and wool dyeing agent for chrome-free tanned sheep sheared fluff leather and environment-friendly dyeing process for chrome-free tanned sheep sheared fluff leather |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104293986A (en) * | 2014-08-14 | 2015-01-21 | 兴业皮革科技股份有限公司 | Waterproof cow leather preparation technology |
| CN106480241A (en) * | 2016-11-22 | 2017-03-08 | 晋江市永建皮革制品有限公司 | A kind of production technology of super Waterproof leather |
-
2017
- 2017-12-20 CN CN201711384459.6A patent/CN108048605A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104293986A (en) * | 2014-08-14 | 2015-01-21 | 兴业皮革科技股份有限公司 | Waterproof cow leather preparation technology |
| CN106480241A (en) * | 2016-11-22 | 2017-03-08 | 晋江市永建皮革制品有限公司 | A kind of production technology of super Waterproof leather |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108707707A (en) * | 2018-06-05 | 2018-10-26 | 嘉兴学院 | A kind of waterproof antistatic stuffing technique for leather processing |
| CN108707707B (en) * | 2018-06-05 | 2020-08-28 | 嘉兴学院 | Waterproof antistatic greasing process for leather treatment |
| CN110791598A (en) * | 2019-11-18 | 2020-02-14 | 宁夏金海皮业有限责任公司 | Processing method of waterproof cattle vamp leather |
| CN112376297A (en) * | 2020-08-26 | 2021-02-19 | 焦作隆丰皮草企业有限公司 | Waterproof agent and wool dyeing agent for chrome-free tanned sheep sheared fluff leather and environment-friendly dyeing process for chrome-free tanned sheep sheared fluff leather |
| CN112376297B (en) * | 2020-08-26 | 2023-08-01 | 焦作隆丰皮草企业有限公司 | Waterproof agent, dyeing agent and environment-friendly dyeing process for chrome-free tanned sheep-cut napped leather |
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Application publication date: 20180518 |