CN110257569A - A kind of manufacture craft of vegetable tanning first layer lether - Google Patents

A kind of manufacture craft of vegetable tanning first layer lether Download PDF

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Publication number
CN110257569A
CN110257569A CN201910509904.XA CN201910509904A CN110257569A CN 110257569 A CN110257569 A CN 110257569A CN 201910509904 A CN201910509904 A CN 201910509904A CN 110257569 A CN110257569 A CN 110257569A
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CN
China
Prior art keywords
added
drum unit
hours
water
tanning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910509904.XA
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Chinese (zh)
Inventor
蔡福泉
姚克英
肖晓波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Hongbo Leather Co Ltd
Original Assignee
Anhui Hongbo Leather Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Hongbo Leather Co Ltd filed Critical Anhui Hongbo Leather Co Ltd
Priority to CN201910509904.XA priority Critical patent/CN110257569A/en
Publication of CN110257569A publication Critical patent/CN110257569A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/02—Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/58—Drying
    • 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
    • C14C1/00—Chemical treatment prior to tanning
    • C14C1/04—Soaking
    • 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
    • C14C1/06—Facilitating unhairing, e.g. by painting, by liming
    • 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
    • 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
    • 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
    • C14C3/10—Vegetable 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
    • C14C3/28—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

The present invention relates to a kind of 1, manufacture crafts of vegetable tanning first layer lether, comprising the following steps: 1) former leather wetting is stayed overnight；2) it washes；3) it soaks；4) depilation liming；5) deliming；6) deliming after-tack；7) it is washed after softening；8) pickling；9) tanning；10) retanning；11) it neutralizes；12) stuffing；13) it stretches；14) it is dried in vacuo；15) it hangs and dries in the air, the invention has the benefit that detanning is thorough, the vegetable tanning first layer lether quality obtained after tanning is high.

Description

A kind of manufacture craft of vegetable tanning first layer lether
Technical field
The present invention relates to leatherwork fields, and in particular to a kind of manufacture craft of vegetable tanning first layer lether.
Background technique
Vegetable tanning skin is a kind of environment-friendly type natural Kraft, is commonly called as tree cream skin, be one kind without any coating, have a shave or chemically The ox-hide type of color processing.Detanning is link the most key in the production of vegetable tanning skin, by detanning the structure of rawhide is occurred The variation of matter becomes the leather for having use value, therefore whether detanning thoroughly directly determines the superiority and inferiority of vegetable tanning cortex amount.Tradition Production technology in, generally use formic acid or oxalic acid tempering, inhibit blue vitriol hydrolysis after acid adding, to reduce its flexibility, while molten Hydrogen ion in liquid replaces carboxyl, disconnects blue vitriol and collagen and achievees the purpose that tempering.This kind of technique is generally more difficult to thorough detanning, And the leather appearance of this kind of technique production is single, use scope is limited.
Summary of the invention
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art,
A kind of manufacture craft of vegetable tanning first layer lether is provided.
To achieve the above object, the present invention provides the following technical scheme that a kind of manufacture craft of vegetable tanning first layer lether, including Following steps:
1) former leather wetting is stayed overnight, and former skin is placed in drum unit, and water is added in drum unit, and water and former skin ratio are 2:1, leaching It is wet to stand 20 hours；
2) it washes, is added in salt water and is washed in drum unit, salt water Baume degrees is below 2.0；
3) it soaks, is added in drum unit comprising 1% immersion agent and degreasing agent, surplus is the solution of water, soaking time 20 hours；
4) depilation liming, the water that mass fraction and tare weight amount 1:1 former after step 3 are added into drum unit add liming Agent, vulcanized sodium, NaHS, extraordinary liming agent, lime are rotated, and are rotated according to following rule: being rotated 5 minutes stop per hour It is rotated further by 5 minutes after machine in next hour, shuts down and take out after continuous 36 hours, carry out split；
5) deliming, the raw material after split are replaced in turn in estimation and be added the water of mass fraction and split quality 1:1 with And 1.2% without amine deliming agent, static 1 hour；
6) deliming after-tack is added with split total mass fraction than soft dose of 0.2% enzyme of the water for 1:1 and addition in drum unit, soft Change the time 3 hours, softening temperature is maintained at 38 DEG C；
7) it is washed after softening, the water that twice split weight is added in drum unit is cleaned, and scavenging period 15 minutes, is repeated Cleaning is twice；
8) water is added in pickling in drum unit, and water inventory is split weight after 2 times of washings, and Baume degrees is added 6.0 Salt, 0.2 mould inhibitor, 1.3% sodium perborate impregnate 8-10 hours；
9) 3% chrome-free tanning agent, 20% vegetable tannins, 5% dispersion tannin is added in tanning in drum unit, and tanning temperature is 50 DEG C, tan The time 8 hours processed；Drum unit works 2 hours after the completion of tanning, takes out；
10) split after step 9 is placed in drum unit by retanning again, and be added 1% oxalic acid, 20% vegetable tannins and 5% dispersion tannin is rinsed, and drum unit works 5 hours；
11) it neutralizes, it is that 5% syntans is added after placing 2 hours in 1.2% with tannin to put that mass fraction is added in drum unit It sets 2 hours and drum unit is warmed to 50 DEG C simultaneously；
12) stuffing, it is 2% synthetic oil, 1.5% fish oil, 1% oil generation and 1.5% tear-resistant oil that mass fraction, which is added, toward drum unit, is turned It drum 1.5 hours, takes out；
13) it stretches, the split after step 12 is taken out into expansion；
14) it being dried in vacuo, the split after expansion is dried in vacuo, drying time 24 hours, drying temperature is controlled at 50 DEG C, It is taken out after vacuum drying；
15) it hangs to dry in the air and hang drying by the expansion skin after vacuum drying, obtain vegetable tanning first layer lether.
A kind of manufacture craft of above-mentioned vegetable tanning first layer lether can be further arranged to: the degreasing agent content in the step 3 It is 0.5%.
A kind of manufacture craft of above-mentioned vegetable tanning first layer lether can be further arranged to: liming agent, vulcanization in the step 4 Sodium, NaHS, extraordinary liming agent, lime quality ratio are 10:8:5:5:15.
Using the above scheme, the present invention first thoroughly lost hair or feathers to raw material before tanning and retanning procedures, deliming, In tanning thorough detanning can be carried out to raw material.
The invention has the benefit that detanning is thorough, the vegetable tanning first layer lether quality obtained after tanning is high.
Specific embodiment
A kind of manufacture craft of vegetable tanning first layer lether, comprising the following steps:
1) former leather wetting is stayed overnight, and former skin is placed in drum unit, and water is added in drum unit, and water and former skin ratio are 2:1, leaching It is wet to stand 20 hours；
2) it washes, is added in salt water and is washed in drum unit, salt water Baume degrees is below 2.0；
3) it soaks, is added in drum unit comprising 1% immersion agent and 0.5% degreasing agent, surplus is the solution of water, and soaking time 20 is small When；
4) depilation liming, the water that mass fraction and tare weight amount 1:1 former after step 3 are added into drum unit add 1% liming Agent, 0.8% vulcanized sodium, 0.5% NaHS, 0.5% extraordinary liming agent, 1.5% lime are rotated, and are rotated according to following rule: It rotates 5 minutes and is rotated further by 5 minutes after shutting down in next hour per hour, shut down and take out after continuous 36 hours, carry out split；
5) deliming, the raw material after split are replaced in turn in estimation and be added the water of mass fraction and split quality 1:1 with And 1.2% without amine deliming agent, static 1 hour；
6) deliming after-tack is added with split total mass fraction than soft dose of 0.2% enzyme of the water for 1:1 and addition in drum unit, soft Change the time 3 hours, softening temperature is maintained at 38 DEG C；
7) it is washed after softening, the water that twice split weight is added in drum unit is cleaned, and scavenging period 15 minutes, is repeated Cleaning is twice；
8) water is added in pickling in drum unit, and water inventory is split weight after 2 times of washings, and Baume degrees is added 6.0 Salt, 0.2 mould inhibitor, 1.3% sodium perborate impregnate 8-10 hours；
9) 3% chrome-free tanning agent, 20% vegetable tannins, 5% dispersion tannin is added in tanning in drum unit, and tanning temperature is 50 DEG C, tan The time 8 hours processed；Drum unit works 2 hours after the completion of tanning, takes out；
10) split after step 9 is placed in drum unit by retanning again, and be added 1% oxalic acid, 20% vegetable tannins and 5% dispersion tannin is rinsed, and drum unit works 5 hours；
11) it neutralizes, it is that 5% syntans is added after placing 2 hours in 1.2% with tannin to put that mass fraction is added in drum unit It sets 2 hours and drum unit is warmed to 50 DEG C simultaneously；
12) stuffing, it is 2% synthetic oil, 1.5% fish oil, 1% oil generation and 1.5% tear-resistant oil that mass fraction, which is added, toward drum unit, is turned It drum 1.5 hours, takes out；
13) it stretches, the split after step 12 is taken out into expansion；
14) it being dried in vacuo, the split after expansion is dried in vacuo, drying time 24 hours, drying temperature is controlled at 50 DEG C, It is taken out after vacuum drying；
15) it hangs to dry in the air and hang drying by the expansion skin after vacuum drying, obtain vegetable tanning first layer lether.

Claims (3)

1. a kind of manufacture craft of vegetable tanning first layer lether, comprising the following steps:
1) former leather wetting is stayed overnight, and former skin is placed in drum unit, and water is added in drum unit, and water and former skin ratio are 2:1, leaching It is wet to stand 20 hours；
2) it washes, is added in salt water and is washed in drum unit, salt water Baume degrees is below 2.0；
3) it soaks, is added in drum unit comprising 1% immersion agent and degreasing agent, surplus is the solution of water, soaking time 20 hours；
4) depilation liming, the water that mass fraction and tare weight amount 1:1 former after step 3 are added into drum unit add liming Agent, vulcanized sodium, NaHS, extraordinary liming agent, lime are rotated, and are rotated according to following rule: being rotated 5 minutes stop per hour It is rotated further by 5 minutes after machine in next hour, shuts down and take out after continuous 36 hours, carry out split；
5) deliming, the raw material after split are replaced in turn in estimation and be added the water of mass fraction and split quality 1:1 with And 1.2% without amine deliming agent, static 1 hour；
6) deliming after-tack is added with split total mass fraction than soft dose of 0.2% enzyme of the water for 1:1 and addition in drum unit, soft Change the time 3 hours, softening temperature is maintained at 38 DEG C；
7) it is washed after softening, the water that twice split weight is added in drum unit is cleaned, and scavenging period 15 minutes, is repeated Cleaning is twice；
8) water is added in pickling in drum unit, and water inventory is split weight after 2 times of washings, and Baume degrees is added 6.0 Salt, 0.2 mould inhibitor, 1.3% sodium perborate impregnate 8-10 hours；
9) 3% chrome-free tanning agent, 20% vegetable tannins, 5% dispersion tannin is added in tanning in drum unit, and tanning temperature is 50 DEG C, tan The time 8 hours processed；Drum unit works 2 hours after the completion of tanning, takes out；
10) split after step 9 is placed in drum unit by retanning again, and be added 1% oxalic acid, 20% vegetable tannins and 5% dispersion tannin is rinsed, and drum unit works 5 hours；
11) it neutralizes, it is that 5% syntans is added after placing 2 hours in 1.2% with tannin to put that mass fraction is added in drum unit It sets 2 hours and drum unit is warmed to 50 DEG C simultaneously；
12) stuffing, it is 2% synthetic oil, 1.5% fish oil, 1% oil generation and 1.5% tear-resistant oil that mass fraction, which is added, toward drum unit, is turned It drum 1.5 hours, takes out；
13) it stretches, the split after step 12 is taken out into expansion；
14) it being dried in vacuo, the split after expansion is dried in vacuo, drying time 24 hours, drying temperature is controlled at 50 DEG C, It is taken out after vacuum drying；
15) it hangs to dry in the air and hang drying by the expansion skin after vacuum drying, obtain vegetable tanning first layer lether.
2. a kind of manufacture craft of vegetable tanning first layer lether according to claim 1, it is characterised in that: de- in the step 3 Rouge agent content is 0.5%.
3. a kind of manufacture craft of vegetable tanning first layer lether according to claim 1, it is characterised in that: liming in the step 4 Agent, vulcanized sodium, NaHS, extraordinary liming agent, lime quality ratio are 10:8:5:5:15.
CN201910509904.XA 2019-06-13 2019-06-13 A kind of manufacture craft of vegetable tanning first layer lether Pending CN110257569A (en)

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CN201910509904.XA CN110257569A (en) 2019-06-13 2019-06-13 A kind of manufacture craft of vegetable tanning first layer lether

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910509904.XA CN110257569A (en) 2019-06-13 2019-06-13 A kind of manufacture craft of vegetable tanning first layer lether

Publications (1)

Publication Number Publication Date
CN110257569A true CN110257569A (en) 2019-09-20

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CN201910509904.XA Pending CN110257569A (en) 2019-06-13 2019-06-13 A kind of manufacture craft of vegetable tanning first layer lether

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113718067A (en) * 2021-09-06 2021-11-30 广州施华科技有限公司 Novel Ecotan leather tanning process

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103397116A (en) * 2013-08-23 2013-11-20 宁夏西部皮草有限公司 Tanning method of Tan sheep fur
CN104818354A (en) * 2015-03-10 2015-08-05 海宁富邦汽车内饰有限公司 Processing technology for chrome-free tanning leather
CN109628659A (en) * 2018-12-17 2019-04-16 兴业皮革科技股份有限公司 A kind of ecological environment-friendly type vegetable tanning cattle hide upper leather production technology

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103397116A (en) * 2013-08-23 2013-11-20 宁夏西部皮草有限公司 Tanning method of Tan sheep fur
CN104818354A (en) * 2015-03-10 2015-08-05 海宁富邦汽车内饰有限公司 Processing technology for chrome-free tanning leather
CN109628659A (en) * 2018-12-17 2019-04-16 兴业皮革科技股份有限公司 A kind of ecological environment-friendly type vegetable tanning cattle hide upper leather production technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113718067A (en) * 2021-09-06 2021-11-30 广州施华科技有限公司 Novel Ecotan leather tanning process

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Application publication date: 20190920