CN106167840A - A kind of production technology prepared without chrome tanning double-layer leather - Google Patents
A kind of production technology prepared without chrome tanning double-layer leather Download PDFInfo
- Publication number
- CN106167840A CN106167840A CN201610688475.3A CN201610688475A CN106167840A CN 106167840 A CN106167840 A CN 106167840A CN 201610688475 A CN201610688475 A CN 201610688475A CN 106167840 A CN106167840 A CN 106167840A
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- Prior art keywords
- tanning
- layers
- agent
- leather
- graywall
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- 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.)
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Classifications
-
- 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
- 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
- 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
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/32—Material containing basic nitrogen containing amide groups leather skins
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile 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 production technology prepared without chrome tanning double-layer leather, dye including two layers of graywall pre-tanning, two layers of graywall retanning, cover with paint, lacquer, colour wash, etc. and arrange, be eventually fabricated without two layers of cushion leather of chrome tanning.The production technology of the present invention, owing to not having chromic salts, without chromium in production waste, greatly reduces the difficulty of sewage disposal, has saved the cost of sewage disposal, reduce the pollution to natural environment.Additionally, due to without chromed tanned leather leather superiority in terms of water-permeable and air permeable, the present invention directly enhances the water-permeable and air permeable performance of two layers of cushion leather.
Description
Technical field
The present invention relates to a kind of seat cushions, particularly relate to a kind of production technology prepared without chrome tanning double-layer leather.
Background technology
Day by day focusing on the epoch of ecology, environmental protection at this, leather industry will be faced with formidable challenges, at home leather industry
Actively carry out corium mark Ecology Leather certification, it is stipulated that in Ecology Leather, the content of relevant chemical substance that may be present is necessary
In the range of being strict controlled in limitation.
Without two layers of cushion leather of chrome tanning, it is desirable to conventional kraft as raw material, by the wound of the techniques such as preparation, tanning and covering with paint
Newly, using the innovation technique that some are new, Development and Production indices reaches China's corium mark Ecology Leather product specification, simultaneously
Meet the relevant enterprise environment-friendly products to leather substance code requirement.
Two layers of seat cushions of the prior art are all to use chrome tanning two layers, mainly use chrome tanning agent conduct in pre-tanning
Main tanning agent, retanning dyeing coordinates chrome tanning agent to carry out retanning again.Technique uses chromic salts in a large number, produces substantial amounts of high concentration chrome wastewater, process
Natural environment is also polluted big by difficulty.The water-permeable and air permeable aspect of resultant Leather is the most unsatisfactory.
Summary of the invention
It is an object of the invention to develop a set of high-environmental without two layers of cushion leather production technology of chrome tanning, do not use any chromium
Tanning agent, is substantially reduced the pollution to natural environment, and improves the water-permeable and air permeable of resultant Leather.
The present invention solves the problems referred to above and be the technical scheme is that
A kind of production technology prepared without chrome tanning double-layer leather, it is characterised in that: described production technology includes two layers of ash
Skin pre-tanning, two layers of graywall retanning are dyeed, are covered with paint, lacquer, colour wash, etc. and arrange, and are eventually fabricated without two layers of cushion leather of chrome tanning,
Two layers of wherein said graywall pre-tanning comprise the following steps:
(1) after head layer and two layers are separated by complete thick graywall by split operation, two layers of graywall put into tanning drum to be carried out
Deliming, softening, pickling；It is subsequently adding glutaraldehyde tanning agent 5% in rotary drum, rotates 180min, carry out sufficient permeable reactive, directly
Occur light yellow to the skin heart,
(2) it is subsequently adding sodium formate 1% to rotate 30min and be combined tanning, during tanning, uses sodium bicarbonate water management pH value
At 4.2-4.5, rotate 150 minutes,
(3) sodium bicarbonate water adds in four times, and first three time rotates 30min every time, rotates 60min for the last time,
(4) add antifungus agent 0.1%, add alternative syntans 3% and assist glutaraldehyde tanning agent to carry out two layers of tanning, turn
Dynamic 120min,
(5) finally go out drum to stand；
The most each percent is each composition and accounts for the percetage by weight of skin.
Wherein, two layers of described graywall retanning dyeing comprise the following steps,
(1) water adding 100% is put into and is mixed in rotary drum again, and controlling temperature is 35 DEG C, control pH value 5.1 ± 0.1 it
Between,
(2) add fatting agent 1% and rotate 15min,
(3) addition acrylic acid double tanning agent 3% permeates and mixes again 45 minutes,
(4) adding fatting agent 2%, dispersant 1%, vegetable tanning agent 5%, mix 30min again；Add fatting agent 2%, alternative
Syntans 4%, vegetable tanning agent 5% are mixed 30min again,
(5) dyestuff penetration reaction 60min is added, until the heart that dyes,
(6) add the water of 80%, control temperature and be 48-50 DEG C,
(7) add fatting agent 6%, polymeric type retanning agent 2%, mix again 45 minutes,
(8) add antifungus agent 0.2% to rotate 30 minutes,
(9) add formic acid 1.2% at twice, rotate 30min respectively, regulation pH value between 3.6 ± 0.1,
(10) washing goes out drum three times；
The most each percent is each composition and accounts for the percetage by weight of skin.
Described covering with paint comprises dipping filling, embossing, bottom spraying, the operation of effect layer roller coat, top layer spraying.
Described effect layer roller coat, by adjusting folder rod clearance control coating uniformity and coating weight, enters drying tunnel after roller coat
It is dried.
Wherein, in two layers of graywall pre-tanning, use modified glutaraldehyde as main tanning agent to substitute chrome tanning agent, and coordinate one
A little alternative syntanses improve the physical property of Rhizoma Euonymus two layers.Retanning dyeing process afterwards uses vegetable tanning agent and
A little syntanses substitute original chrome tanning agent retanning, have accomplished whole production technology Trend of Chrome-free the most completely.
The present invention compared with prior art, has the following advantages and effect: because not having the use of chromic salts, so producing dirt
Without chromium in water, greatly reduce the difficulty of sewage disposal, saved the cost of sewage disposal, reduce the dirt to natural environment
Dye.And owing to removing from office the superiority in terms of water-permeable and air permeable without chromed tanned leather, so directly enhancing the permeable of two layers of cushion leather
Gas performance.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in the embodiment of the present invention
Technical scheme is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention rather than complete
The embodiment in portion.
A kind of production technology prepared without chrome tanning double-layer leather of the present invention, including two layers of graywall pre-tanning, two layers of graywall again
Tan dyes, covers with paint, lacquer, colour wash, etc. and arrange, and is eventually fabricated without two layers of cushion leather of chrome tanning.
Wherein, two layers of graywall pre-tanning stage, after head layer and two layers are separated by complete thick graywall by split operation, two layers
Graywall puts into tanning drum and carries out deliming, softening, pickling.The glutaraldehyde tanning agent adding modification after completion of the above steps carries out tan
System, the mechanism time of rotary drum will be compared with the long 50%-100% of chrome tanning agent tanning.Then alkali pH value is carried higher than chrome tanning agent.Existing chromium
Heating process in two layers of technology of tan also will be removed, and add a certain amount of alternative syntans auxiliary glutaraldehyde tanning agent and carry out two
Layer tanning.
The concrete technology of two layers of graywall pre-tanning is as follows:
(1) after head layer and two layers are separated by complete thick graywall by split operation, two layers of graywall put into tanning drum to be carried out
Deliming, softening, pickling；It is subsequently adding glutaraldehyde tanning agent 5% in rotary drum, rotates 180min, carry out sufficient permeable reactive, directly
Occur light yellow to the skin heart,
(2) it is subsequently adding sodium formate 1% to rotate 30min and be combined tanning, during tanning, uses sodium bicarbonate water management pH value
At 4.2-4.5, rotate 150 minutes,
(3) sodium bicarbonate water adds in four times, and first three time rotates 30min every time, rotates 60min for the last time,
(4) add antifungus agent 0.1%, add alternative syntans 3% and assist glutaraldehyde tanning agent to carry out two layers of tanning, turn
Dynamic 120min,
(5) finally go out drum to stand；
Two layers of graywall retanning dyeing phase: remove the chromium powder retanning in retanning dyeing process, backwater directly neutralizes after terminating.
Vegetable tanning agent (such as TARA, mimosia etc.) and the alternative syntanses of using in the filling process more, increase double-layer leather
Richness.Retanning dyeing is operated by two layers of automobile leather post processing flow process of existing chrome tanning after terminating, until finished product.
Concrete fill process is as follows:
(1) water adding 100% is put into and is mixed in rotary drum again, and controlling temperature is 35 DEG C, control pH value 5.1 ± 0.1 it
Between,
(2) add fatting agent 1% and rotate 15min,
(3) addition acrylic acid double tanning agent 3% permeates and mixes again 45 minutes,
(4) adding fatting agent 2%, dispersant 1%, vegetable tanning agent 5%, mix 30min again；Add fatting agent 2%, alternative
Syntans 4%, vegetable tanning agent 5% are mixed 30min again,
(5) dyestuff penetration reaction 60min is added, until the heart that dyes,
(6) add the water of 80%, control temperature and be 48-50 DEG C,
(7) add fatting agent 6%, polymeric type retanning agent 2%, mix again 45 minutes,
(8) add antifungus agent 0.2% to rotate 30 minutes,
(9) add formic acid 1.2% at twice, rotate 30min respectively, regulation pH value between 3.6 ± 0.1,
(10) washing goes out drum three times；
The above each percent is each composition and accounts for the percetage by weight of skin.
Wherein, in order to meet the requirement of use, many leathers will be covered with paint, lacquer, colour wash, etc., but leather quality is different, finished leather kind
Class is different, then cover with paint, lacquer, colour wash, etc. operation and be also not quite similar, and the covering with paint of the present invention comprises dyestuff coloring upper leather, dipping filling, embossing, bottom spray
Painting, the operation of effect layer roller coat, top layer spraying.Wherein, dipping filling is that on buff, one layer of dipping filled out by brush before covering with paint, lacquer, colour wash, etc.
Impregnating resin, can improve grain situation, improves the grain layer intensity of leather, it is also possible to as the back cover layer of buff.
Bottom sprays as in coating one layer of most critical, it is desirable to adhesion strength can suitably immerse in leather by force, it is ensured that coating leather surface is firmly tied
Close.Effect layer roller coat, primarily to make coating color uniformity, makes up or improves the deficiency of bottom coloring, finally determine
The color and luster of finished leather, formation has required gloss and every fastness is good, has the coating of certain mechanical strength, and is top layer
Covering with paint is laid a solid foundation, and supports top layer.Described effect layer roller coat presss from both sides rod clearance control coating uniformity and coating weight by adjusting,
Enter drying tunnel after roller coat to be dried.
Top layer spraying is last layer of whole coating, and top finishing is primarily to reach the preferable outward appearance of finished leather.Top
Layer is covered with paint, lacquer, colour wash, etc. and is used the good film former of water repelling property, and top finishing can carry out other effect process, such as metallic effect, anti-
Water process etc..
Cover with paint, lacquer, colour wash, etc. and between each layer, there is no obvious boundary, two-layer or multilamellar can be merged once-through operation, becoming of modern covering with paint
Gesture is to reduce artificial layering, is used in mixed way according to certain ratio by multiple material.In a word, it is the most for covering with paint, lacquer, colour wash, etc. operation sequence
Sample, therefore, it can make any change according to selection.
What present invention technique produced according to the invention was produced has carried out leather water-permeable and air permeable without two layers of seat cushion of chrome tanning
Detected, and contrasted with two layers of cushion leather of chrome tanning, as shown in the table:
As above table, has carried out three detections, chrome tanning two layers to two layers of cushion leather of chrome tanning with without two layers of medicated cushion leather sampling of chrome tanning
Three sub-sampling testing results of cushion leather are respectively 0.59,0.64,0.62, and without the testing result difference of two layers of medicated cushion leather of chrome tanning
It is 1.18,1.09 and 1.11.From testing result it can be seen that without the water-permeable and air permeable of two layers of medicated cushion of chrome tanning leather than two layers of seat of chrome tanning
Leather packing is the most a lot.
After using this process for tanning, the properties without two layers of medicated cushion leather of chrome tanning is obviously improved, wherein
(1) tensile strength >=600N；
(2) elongation percentage 40%-70% during fracture；
(3) elongation percentage during 100N is 10%-25%；
(4) tearing strength >=26N；
(5) thickness is 1.3 ± 0.2mm, and whole skin thickness is more uniform, and surface is smooth；
Above content described in this specification is only to patent example explanation of the present invention.Belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar by those skilled in the art
Mode substitutes, and without departing from the content of description of the invention or surmount scope defined in the claims, all should belong to
In protection scope of the present invention.
Claims (4)
1. the production technology prepared without chrome tanning double-layer leather, it is characterised in that: described production technology includes two layers of graywall
Pre-tanning, two layers of graywall retanning are dyeed, are covered with paint, lacquer, colour wash, etc. and arrange, and are eventually fabricated without two layers of cushion leather of chrome tanning, two layers of wherein said graywall
Pre-tanning comprises the following steps:
(1) after head layer and two layers are separated by complete thick graywall by split operation, two layers of graywall put into tanning drum carry out deliming,
Softening, pickling；It is subsequently adding glutaraldehyde tanning agent 5% in rotary drum, rotates 180min, carry out sufficient permeable reactive, until the skin heart
Occur light yellow,
(2) it is subsequently adding sodium formate 1% to rotate 30min and be combined tanning, during tanning, uses sodium bicarbonate water management pH value to exist
4.2-4.5, rotate 150 minutes,
(3) sodium bicarbonate water adds in four times, and first three time rotates 30min every time, rotates 60min for the last time,
(4) add antifungus agent 0.1%, add alternative syntans 3% and assist glutaraldehyde tanning agent to carry out two layers of tanning, rotate
120min,
(5) finally go out drum to stand；
The most each percent is each composition and accounts for the percetage by weight of skin.
A kind of production technology prepared without chrome tanning double-layer leather the most according to claim 1, it is characterised in that: described two
Layer graywall retanning dyeing comprises the following steps,
(1) water adding 100% is put into and is mixed in rotary drum again, and controlling temperature is 35 DEG C, controls pH value between 5.1 ± 0.1,
(2) add fatting agent 1% and rotate 15min,
(3) addition acrylic acid double tanning agent 3% permeates and mixes again 45 minutes,
(4) adding fatting agent 2%, dispersant 1%, vegetable tanning agent 5%, mix 30min again；Add fatting agent 2%, alternative synthesis
Tanning agent 4%, vegetable tanning agent 5% are mixed 30min again,
(5) dyestuff penetration reaction 60min is added, until the heart that dyes,
(6) add the water of 80%, control temperature and be 48-50 DEG C,
(7) add fatting agent 6%, polymeric type retanning agent 2%, mix again 45 minutes,
(8) add antifungus agent 0.2% to rotate 30 minutes,
(9) add formic acid 1.2% at twice, rotate 30min respectively, regulation pH value between 3.6 ± 0.1,
(10) washing goes out drum three times；
The most each percent is each composition and accounts for the percetage by weight of skin.
A kind of production technology prepared without chrome tanning double-layer leather the most according to claim 1, it is characterised in that: described painting
Decorations comprise dipping filling, embossing, bottom spraying, the operation of effect layer roller coat, top layer spraying.
A kind of production technology prepared without chrome tanning double-layer leather the most according to claim 3, it is characterised in that: described effect
Answer layer roller coat by adjusting folder rod clearance control coating uniformity and coating weight, enter drying tunnel after roller coat and be dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688475.3A CN106167840A (en) | 2016-08-18 | 2016-08-18 | A kind of production technology prepared without chrome tanning double-layer leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688475.3A CN106167840A (en) | 2016-08-18 | 2016-08-18 | A kind of production technology prepared without chrome tanning double-layer leather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106167840A true CN106167840A (en) | 2016-11-30 |
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| CN201610688475.3A Pending CN106167840A (en) | 2016-08-18 | 2016-08-18 | A kind of production technology prepared without chrome tanning double-layer leather |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630115A (en) * | 2017-09-29 | 2018-01-26 | 安徽鼎恒皮件制品有限公司 | A kind of handling process for improving cow split leather wearability |
| CN108166264A (en) * | 2017-12-22 | 2018-06-15 | 海宁卡森皮革有限公司 | A kind of production line for sofa artificial leather |
| CN108179233A (en) * | 2017-11-30 | 2018-06-19 | 广州番禺职业技术学院 | A kind of high environmentally friendly suitcase of smoothness and its manufacturing method |
| CN113373269A (en) * | 2021-06-15 | 2021-09-10 | 河南中牛实业有限公司 | Production method of environment-friendly semi-vegetable tanning oil wax leather |
| CN117344064A (en) * | 2023-03-23 | 2024-01-05 | 明新旭腾新材料股份有限公司 | Production method for improving utilization rate of two-layer cowhide |
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| EP0291165A1 (en) * | 1987-04-24 | 1988-11-17 | I.C.I. Francolor Snc | Tanning Agent |
| CN103060488A (en) * | 2012-12-26 | 2013-04-24 | 四川亭江新材料股份有限公司 | Environment-friendly type crust leather production method |
| CN102534056B (en) * | 2010-12-14 | 2015-03-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
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2016
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|---|---|---|---|---|
| EP0291165A1 (en) * | 1987-04-24 | 1988-11-17 | I.C.I. Francolor Snc | Tanning Agent |
| CN102534056B (en) * | 2010-12-14 | 2015-03-04 | 张壮斗 | Tanning production process capable of recycling waste water repeatedly from soaking to dyeing |
| CN103060488A (en) * | 2012-12-26 | 2013-04-24 | 四川亭江新材料股份有限公司 | Environment-friendly type crust leather production method |
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|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630115A (en) * | 2017-09-29 | 2018-01-26 | 安徽鼎恒皮件制品有限公司 | A kind of handling process for improving cow split leather wearability |
| CN108179233A (en) * | 2017-11-30 | 2018-06-19 | 广州番禺职业技术学院 | A kind of high environmentally friendly suitcase of smoothness and its manufacturing method |
| CN108166264A (en) * | 2017-12-22 | 2018-06-15 | 海宁卡森皮革有限公司 | A kind of production line for sofa artificial leather |
| CN108166264B (en) * | 2017-12-22 | 2020-12-15 | 邳州恒翔生物制品有限公司 | A production line for sofa leather |
| CN113373269A (en) * | 2021-06-15 | 2021-09-10 | 河南中牛实业有限公司 | Production method of environment-friendly semi-vegetable tanning oil wax leather |
| CN117344064A (en) * | 2023-03-23 | 2024-01-05 | 明新旭腾新材料股份有限公司 | Production method for improving utilization rate of two-layer cowhide |
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Application publication date: 20161130 |
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