CN110241268A - Environment-friendly type vegetable tanning first layer lether production technology - Google Patents

Environment-friendly type vegetable tanning first layer lether production technology Download PDF

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Publication number
CN110241268A
CN110241268A CN201910509912.4A CN201910509912A CN110241268A CN 110241268 A CN110241268 A CN 110241268A CN 201910509912 A CN201910509912 A CN 201910509912A CN 110241268 A CN110241268 A CN 110241268A
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CN
China
Prior art keywords
tanning
added
agent
deliming
environment
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
CN201910509912.4A
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Chinese (zh)
Inventor
蔡福泉
姚克英
肖晓波
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Anhui Hongbo Leather Co Ltd
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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 CN201910509912.4A priority Critical patent/CN110241268A/en
Publication of CN110241268A publication Critical patent/CN110241268A/en
Pending legal-status Critical Current

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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
    • 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
    • C14C11/00—Surface finishing of leather
    • 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
    • C14C3/08—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
    • 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

Abstract

The present invention relates to environment-friendly type vegetable tanning first layer lether production technologies, it is characterized in that, including the following process successively carried out: stock, rewetting, primary washing, pre- immersion, depilation liming, split, deliming, softening, secondary washing, pickling, tanning, retanning, it neutralizes, stuffing, adjust acid, precipitation, vacuum drying, final finishing, in rewetting process, 30 DEG C -38 DEG C of warm water is added in rotary drum by formula ratio, formic acid, environment-friendly type rewetting agent, rotation 30 minutes, pH is up to 3.5, then draining washing, the water of 3 times of raw material gross masses is added when washing and Baume degrees is washed in 2 salt below, the invention has the benefit that the vegetable tanned upper leather of production is free of chromium and other are toxic, harmful heavy metal, free formaldehyde content meets vamp leather and requires.The upper leather of production meets the product requirement of green, safety.

Description

Environment-friendly type vegetable tanning first layer lether production technology
Technical field
The present invention relates to leather production fields, and in particular to environment-friendly type vegetable tanning first layer lether production technology.
Background technique
Tanning, retanning procedures are the important procedures for determining natural leather basic performance and style.Since chrome leather is with excellent Good hydrothermal stability and storage stability and good physical mechanical property and organoleptic properties, for a long time chrome tanning conduct Main process for tanning occupies the leading position of tanning production, and chrome retanned is also essential process in chrome leather production.But When being that chrome tanning agent is used for tanning or retanning, it cannot be fully absorbed by materials with hide glue fibril, wherein there is the chromium of 20-35% to arrange with waste water Out, certain pollution is caused to environment, and the wastewater treatment difficulty containing chromium is big, processing cost is high, increase wastewater treatment at This, very big environmental protection pressure is brought to leather-making enterprises.Meanwhile the trivalent chromium in chrome tanning agent is under certain condition, can be converted into Toxic, harmful Cr VI makes the content of 6-valence Cr ions in leather be difficult to meet wanting for " corium mark Ecology Leather product specification " It asks.Therefore, using non-toxic or low-toxic Leather Chemicals, using clearer production technology, production green, the leather products of safety It is of great significance to the development and progress for promoting leather industry.
In view of the above-mentioned problems, vegetable tanning method has many advantages, such as that nontoxic, pollution is small, biodegradable at present, vegetable leather is without weight Metal ion is free of formaldehyde, and the environmental requirement and green, the idea of development of safety product, vegetable tanning agent for meeting clean manufacturing exist Application in green, clean leather-making production is more and more important.And since vegetable tanning agent itself is by sulfurous acid in vegetable tanning method Change modified natural polyphenol product, there is water solubility well, and the combination of vegetable tanning agent and collagen is mainly hydrogen bond and dredges Water key interaction mode, binding ability is relatively weak, and water-fastness ability is bad, especially in higher temperature and applies machinery Under conditions of active force, binding force is more easily damaged, and in subsequent stuffing process, is carried out at relatively high temperatures, and to rotate Certain time, vegetable tanning agent are easy to migrate out from intradermal, and tanning effect is low, reduces tanning physical property.
Summary of the invention
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art,
Environment-friendly type vegetable tanning first layer lether production technology is provided.
To achieve the above object, the present invention provides the following technical scheme that environment-friendly type vegetable tanning first layer lether production technology, Be characterized in that, including the following process successively carried out: stock, rewetting, primary washing, pre- immersion, depilation liming, split, deliming, Softening, pickling, tanning, retanning, neutralization, stuffing, adjusts acid, precipitation, vacuum drying, final finishing at secondary washing, in rewetting process In, be added 30 DEG C -38 DEG C of warm water, formic acid, environment-friendly type rewetting agent in rotary drum by formula ratio, rotate 30 minutes, pH up to 3.5, Then draining washing is added the water of 3 times of raw material gross masses when washing and Baume degrees is washed in 2 salt below；? Deliming is carried out using no amine deliming agent in deliming process, while adjusting ph value to 7.5-8.0；Alkali is first added in the softening process Earthmetal cations complexing agent, adds polymerization species fatting agent and acidproof resistance to medium synthetic oil is softened；The tanning work Tanning is carried out using chrome-free tanning agent in sequence, and 40 DEG C of warm water, saccharification type quebracho extract, soft phosphorus is added in rotary drum by formula ratio Rouge and bleeding agent rotate 50 minutes；In the retanning procedures, substituted type syntans, protein filling, acrylic acid tree are sequentially added Rouge tanning agent carries out retanning；The syntans with neutralization and the propylene with neutralization are first added in the neutralization step Acid resin tanning agent adds sodium bicarbonate, adjusts ph value between 4.3, is eventually adding amphoteric amino-resin tanning agent, anion Solution is heated to 50 DEG C and neutralized by acrylate resin tanning agent, in the stuffing process, continues to add in rotary drum by formula ratio Then the warm water for entering 40 DEG C is added dubbin, tear-resistant grease and oily wax 101, continuous work 36 hours, rotates 5 points per hour Then clock is washed out and is roused.
Above-mentioned environment-friendly type vegetable tanning first layer lether production technology can be further arranged to: the deliming process are as follows: reagent dosage It is determined with the percentage of the quality of graywall obtained by split process, 1.2% is added into rotary drum and carries out deliming without amine deliming agent.
Above-mentioned environment-friendly type vegetable tanning first layer lether production technology can be further arranged to: the finishing process include stand, Stretching, extension, Finishing Process.
The invention has the benefit that the vegetable tanning upper leather of production is free of chromium and other toxic, harmful heavy metals, free formaldehyde Content meets vamp leather and requires.The upper leather of production meets the product requirement of green, safety.
Specific embodiment
The present invention is specifically described below by specific embodiment.
Environment-friendly type vegetable tanning first layer lether production technology, successively comprises the following steps, stock, rewetting: in rewetting process, by matching 30 DEG C -38 DEG C of warm water, formic acid, environment-friendly type rewetting agent is added in side's amount in rotary drum, rotates 30 minutes, then pH is drained up to 3.5 Washing, the water and Baume degrees that 3 times of raw material gross masses are added when washing washed in 2 salt below, once washing, pre- Immersion, depilation liming, split, deliming: deliming is carried out using no amine deliming agent in deliming process, reagent dosage is with split process The percentage of the quality of gained graywall determines, 1.2% is added into rotary drum and carries out deliming without amine deliming agent, at the same adjust ph value to 7.5-8.0；Alkaline-earth metal ions complexing agent is first added in the softening process, adds polymerization species fatting agent and acidproof resistance to point Medium synthetic oil is softened；Softening, secondary washing, pickling, tanning: carrying out tanning using chrome-free tanning agent in tanning processes, and 40 DEG C of warm water, saccharification type quebracho extract, soft phosphatide and bleeding agent is added in rotary drum by formula ratio, rotates 50 minutes；Retanning: In retanning procedures, substituted type syntans, protein filling are sequentially added, acrylate resin tanning agent carries out retanning；It neutralizes: neutralizing work The syntans with neutralization and the acrylate resin tanning agent with neutralization are first added in sequence, adds sodium bicarbonate, Ph value is adjusted between 4.3, is eventually adding amphoteric amino-resin tanning agent, anionic acrylic resin tanning agent heats solution It is neutralized to 50 DEG C；Stuffing: in stuffing process, 40 DEG C of warm water is continuously added by formula ratio in rotary drum, is then added anti- Water oil, tear-resistant grease and oily wax 101, continuous work 36 hours, rotate 5 minutes per hour, then wash out and rouse；It adjusts sour, heavy Change, vacuum drying, final finishing: finishing process includes standing, stretching, Finishing Process.

Claims (3)

1. environment-friendly type vegetable tanning first layer lether production technology, which is characterized in that including the following process successively carried out: stock, rewetting, one Secondary washing, pre- immersion, depilation liming, split, deliming, softening, secondary washing, pickling, tanning, retanning, neutralization, stuffing, tune be sour, 30 DEG C -38 DEG C of warm water, formic acid, ring are added by formula ratio in rewetting process in rotary drum for precipitation, vacuum drying, final finishing Guarantor's type rewetting agent rotates 30 minutes, and pH is up to 3.5, then draining washing, when washing be added the water of 3 times of raw material gross masses with And Baume degrees is washed in 2 salt below；In deliming process using no amine deliming agent carry out deliming, while adjust ph value to 7.5-8.0；Alkaline-earth metal ions complexing agent is first added in the softening process, adds polymerization species fatting agent and acidproof resistance to point Medium synthetic oil is softened；Tanning is carried out using chrome-free tanning agent in the tanning processes, and is added in rotary drum by formula ratio 40 DEG C of warm water, saccharification type quebracho extract, soft phosphatide and bleeding agent rotate 50 minutes；In the retanning procedures, sequentially adds and replace Die syntans, protein filling, acrylate resin tanning agent carry out retanning；First being added in the neutralization step has neutralization Syntans and acrylate resin tanning agent with neutralization, add sodium bicarbonate, adjust ph value between 4.3, finally Amphoteric amino-resin tanning agent is added, solution is heated to 50 DEG C and neutralized by anionic acrylic resin tanning agent, the stuffing In process, 40 DEG C of warm water is continuously added in rotary drum by formula ratio, dubbin, tear-resistant grease and oily wax 101 is then added, It continuous work 36 hours, rotates 5 minutes per hour, then washes out and rouse.
2. environment-friendly type vegetable tanning first layer lether production technology according to claim 1, which is characterized in that the deliming process are as follows: Reagent dosage is determined with the percentage of the quality of graywall obtained by split process, and 1.2% is added into rotary drum and is taken off without amine deliming agent Ash.
3. environment-friendly type vegetable tanning head layer production technology according to claim 1, it is characterised in that: the finishing process includes It stands, stretching, extension, Finishing Process.
CN201910509912.4A 2019-06-13 2019-06-13 Environment-friendly type vegetable tanning first layer lether production technology Pending CN110241268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910509912.4A CN110241268A (en) 2019-06-13 2019-06-13 Environment-friendly type vegetable tanning first layer lether production technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910509912.4A CN110241268A (en) 2019-06-13 2019-06-13 Environment-friendly type vegetable tanning first layer lether production technology

Publications (1)

Publication Number Publication Date
CN110241268A true CN110241268A (en) 2019-09-17

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Application Number Title Priority Date Filing Date
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103215391A (en) * 2013-04-23 2013-07-24 何裕华 Non-chromium leather tanning method
CN109536646A (en) * 2018-12-29 2019-03-29 峰安皮业股份有限公司 A kind of half vegetable tanning wax of environment-friendly type becomes the production method of tire cow hide
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
CN103215391A (en) * 2013-04-23 2013-07-24 何裕华 Non-chromium leather tanning method
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
CN109536646A (en) * 2018-12-29 2019-03-29 峰安皮业股份有限公司 A kind of half vegetable tanning wax of environment-friendly type becomes the production method of tire cow hide

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Application publication date: 20190917

RJ01 Rejection of invention patent application after publication