CN104195272A - Pickled leather dry-cleaning process for sheep wool leather - Google Patents
Pickled leather dry-cleaning process for sheep wool leather Download PDFInfo
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- CN104195272A CN104195272A CN201410362865.2A CN201410362865A CN104195272A CN 104195272 A CN104195272 A CN 104195272A CN 201410362865 A CN201410362865 A CN 201410362865A CN 104195272 A CN104195272 A CN 104195272A
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Abstract
The invention discloses a pickled leather dry-cleaning process for sheep wool leather. The process comprises the following steps of rewetting, spin drying, shearing, main soaking, fleshing, pretreating, pickling, air drying, moisture regaining of pickled leather, pulling and shoveling, dry cleaning, rewetting of the pickled leather, softening, pickling, tanning, wet grinding, neutralizing, fattening, dry finishing for the first time, retanning, dyeing and dry finishing for the second time to finally obtain a finished product, wherein a pretreatment solution used in the pretreating step comprises the following components: 1.0-3.0g/l of a synthetic fattening agent ST, 1.0-3.0g/l of a sulfited fattening agent EBC, 1.0-3.0g/l of a mixed fattening agent GF and the balance of water. By adopting the process disclosed by the invention, the usage amount of a degreasing agent, water and grease can be surely reduced to the utmost extent, and natural grease can be recovered, so that pollution to the environment can be greatly reduced, the discharge of wastewater can be effectively reduced, pollution control and production cost of enterprises are reduced, and the produced wool leather cannot have grease marks, chromium soap and the like due to incomplete degreasing.
Description
Technical field
The present invention relates to hair leather complete processing, be specifically related to a kind of sour skin dry-cleaning technique of sheep's wool leather.
Background technology
That can make hair leather products material skin mainly contains three kinds, slunk, goatskin and lamb skin, with the skin-deep ratio of other two kinds of raw materials, the fat content of lamb skin is very high, and in the hair leather course of processing, can not implement liming operation, therefore the degreasing of hair leather becomes more difficult.The existence meeting of natural fats and oils forms chromium soap in the tanning stage, affects follow-up Color.Conventional operation is now degreasing before each step before tanning adds grease-removing agent to tan substantially, and the consumption of grease-removing agent is very large.After tanning, in the skin base stage, also need further to remove the natural fats and oils in lamb skin by dry-cleaning.The effect of dry-cleaning degreasing is very good, not only can remove the last stage of tanning and not remove clean natural fats and oils, but also can remove the commercial grease adding after a part, for not making to dry-clean rear hide overdrying, must in the stuffing step before dry-cleaning, add to be used for being removed by dry cleaning composition into some greases.Before tanning, a large amount of uses of grease-removing agent can increase a large amount of costs undoubtedly, thereby such necessity operation of present stage is also caving-in bash.If can remove natural fats and oils by dry-cleaning in the last stage of tanning, certainly can greatly reduce production costs.But the raw hide stage before tanning dry-cleans, dry cleaning composition can make hair root loosening, causes irreversible impact.The present invention is intended to develop a kind of technology that can dry-clean under sour skin state, can not impact hair root, there will not be to fall the phenomenons such as hair, knot hair, thereby reduces production costs.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of sour skin dry-cleaning technique of sheep's wool leather, before solving existing tanning, use a large amount of grease-removing agents, skin base stage also to need the problems such as dry-cleaning.This technique not only can realize the grease-removing agent usage quantity of the last stage of tanning and greatly reduce discharge of wastewater and production cost, and the Mao Gemao various aspects of performance of producing is good, on dying hair and dying plate, there is no impact.
To achieve these goals, the technical solution used in the present invention is:
A sour skin dry-cleaning technique for sheep's wool leather, its technique comprises: the dry finishing → finished product of rewetting → drying → cropping → main immersion → fleshing → pre-treatment → pickling → dry → sour skin moisture regain → pulling scraper → dry-cleaning → sour leather wetting → softening → pickling → tanning → wet-milling → neutralization → stuffing → dry finishing → retanning for the first time → dyeing → for the second time.
Concrete technology step is:
Step 1, rewetting;
Step 2, dries;
Step 3, cropping;
Step 4, main immersion;
Step 5, fleshing;
Step 6, pre-treatment: the consisting of of pretreatment fluid: synthetic fat liquor ST (United Chemicals) 1.0-3.0g/l, sulphiting fatting agent EBC (CLP-COLORANTES) 1.0-3.0g/l, mix fatting agent GF (the auspicious leather technology of moral) 1.0-3.0g/l, all the other are water.Pretreatment fluid consumption is that 20-40 adds according to the mass ratio of water in pretreatment fluid and fur.At temperature 30-40 ℃, the time is 30-90min, then adds alkanoic PF (German Si Mahuaxue) 1.0-3.0g/l or polyacetals A-55 (United Chemicals) 1.0-3.0g/l, and the time is 1-3h, afterwards standing over night;
Step 7, pickling;
Step 8, dries;
Step 9, moisture regain: moisture regain the consisting of of liquid: the industrial salt 50-80g/L that bleachinges and dyeing, all the other are water;
Step 10, dry-cleaning;
Step 11, acid leather wetting: the consisting of of rewetting liquid: salt 50-80g/L, alkanoic PF (German Si Mahuaxue) 1.0-3.0g/l or polyacetals A-55 (United Chemicals) 1.0-3.0g/l, at temperature 30-40 ℃, intermittent rotary 90-180min;
Step 12, softening;
Step 13, pickling;
Step 14, tanning;
Step 15, wet-milling;
Step 10 six, neutralization;
Step 10 seven, stuffing;
Step 10 eight, for the first time dry finishing;
Step 10 nine, retanning;
Step 2 ten, dyeing;
Step 2 11, for the second time dry finishing;
Step 2 12, finished product.
In described step 9, the 5%-20% that moisture regain liquid consumption dries rear weight according to sour skin is evenly sprayed at hide surface.
In described step 10, dry-cleaning rotation time is not higher than 5min, and dry-cleaning post-drying temperature is not higher than 50 ℃.
In described step 10 eight and step 2 11, in for the first time described and dry finishing step for the second time, all do not need to dry-clean again operation.
Compared with prior art, the present invention has the following advantages:
Adopt sour skin dry-cleaning and supporting technique to carry out the processing of sheep's wool leather, do not need additionally to add again grease-removing agent, there is no degreasing process, can save wastewater discharge, reduce the usage quantity of follow-up fatting agent simultaneously, there is actual production meaning.This technology not only can reduce enterprise cost, and the sheep's wool of producing leather hair color is pure white, without withered mao of phenomenon, leather body is bright-colored, remove from office basic indistinction with the normal sheep's wool of producing, and physical and mechanical properties reaches the resulting hair leather of normal process completely, on dying hair and dying plate and there is no impact.
Embodiment
Below in conjunction with embodiment, the present invention is described in further details.
In the present invention, sour skin dry-cleaning lamb skin is produced clothes hair leather production technique, comprises the following steps successively: the dry finishing → finished product of rewetting → dryings → cropping → main immersion → fleshing → pre-treatment → pickling → dry → sour skin moisture regain → pulling scraper → dry-cleaning → sour leather wetting → softening → pickling → tanning → wet-milling → neutralization → stuffing → dry finishing → retanning for the first time → dyeing → for the second time.Whole technique except the master operations such as pre-treatment, the moisture regain of sour skin, sour leather wetting, other the same common process of technique.Below by concrete embodiment, the present invention is described in detail to explanation.
Embodiment 1
A sour skin dry-cleaning technique for sheep's wool leather, comprises the following steps:
Step 1, rewetting: same common process;
Step 2, dries;
Step 3, cropping;
Step 4, main immersion: same common process;
Step 5, fleshing;
Step 6, pre-treatment: the consisting of of pretreatment fluid: synthetic fat liquor ST (UnitedChemicals) 1.5g/l, sulphiting fatting agent EBC (CLP-COLORANTES) 1.7g/l, mixes fatting agent GF (the auspicious leather technology of moral) 2.3g/l, and all the other are water.Pretreatment fluid consumption is 25 interpolations according to the mass ratio of water in pretreatment fluid and fur.At 35 ℃ of temperature, the time is 60min, then adds alkanoic PF (German Si Mahuaxue) 1.5g/l, and the time is 2h, afterwards standing over night;
Step 7, pickling: same common process;
Step 8, dries;
Step 9, moisture regain: moisture regain the consisting of of liquid: the industrial salt 75g/L that bleachinges and dyeing, all the other are water;
Step 10, dry-cleaning: add dry cleaning composition dry-cleaning rotation time 3min, dry-cleaning post-drying temperature 45 C;
Step 11, sour leather wetting: the consisting of of rewetting liquid: salt 75g/L, polyacetals A-55 (United Chemicals) 3.0g/l, at 37 ℃ of temperature, intermittent rotary 100min;
Step 12, softening: same common process;
Step 13, pickling: same common process;
Step 14, tanning: same common process;
Step 15, wet-milling;
Step 10 six, neutralization: same common process;
Step 10 seven, stuffing: same common process;
Step 10 eight, for the first time dry finishing;
Step 10 nine, retanning: same common process;
Step 2 ten, dyeing: same common process;
Step 2 11, for the second time dry finishing;
Step 2 12, finished product.
Embodiment 2
A sour skin dry-cleaning technique for sheep's wool leather, comprises the following steps:
Step 1, rewetting: same common process;
Step 2, dries;
Step 3, cropping;
Step 4, main immersion: same common process;
Step 5, fleshing;
Step 6, pre-treatment: the consisting of of pretreatment fluid: synthetic fat liquor ST (United Chemicals) 3.0g/l, sulphiting fatting agent EBC (CLP-COLORANTES) 2.0g/l, mixes fatting agent GF (the auspicious leather technology of moral) 1.5g/l, and all the other are water.Pretreatment fluid consumption is 35 interpolations according to the mass ratio of water in pretreatment fluid and fur.At 36 ℃ of temperature, the time is 55min, then adds polyacetals A-55 (United Chemicals) 2.5g/l, and the time is 2h, afterwards standing over night;
Step 7, pickling: same common process;
Step 8, dries;
Step 9, moisture regain: moisture regain the consisting of of liquid: the industrial salt 60g/L that bleachinges and dyeing, all the other are water;
Step 10, dry-cleaning: add dry cleaning composition dry-cleaning rotation time 3.5min, 48 ℃ of dry-cleaning post-drying temperature;
Step 11, sour leather wetting: the consisting of of rewetting liquid: salt 55g/L, alkanoic PF (German Si Mahuaxue) 3.0g/l, at 39 ℃ of temperature, intermittent rotary 120min;
Step 12, softening: same common process;
Step 13, pickling: same common process;
Step 14, tanning: same common process;
Step 15, wet-milling;
Step 10 six, neutralization: same common process;
Step 10 seven, stuffing: same common process;
Step 10 eight, for the first time dry finishing;
Step 10 nine, retanning: same common process;
Step 2 ten, dyeing: same common process;
Step 2 11, for the second time dry finishing;
Step 2 12, finished product.
Embodiment 3
A sour skin dry-cleaning technique for sheep's wool leather, comprises the following steps:
Step 1, rewetting: same common process;
Step 2, dries;
Step 3, cropping;
Step 4, main immersion: same common process;
Step 5, fleshing;
Step 6, pre-treatment: the consisting of of pretreatment fluid: synthetic fat liquor ST (United Chemicals) 2.5g/l, sulphiting fatting agent EBC (CLP-COLORANTES) 2.5g/l, mixes fatting agent GF (the auspicious leather technology of moral) 1.5g/l, and all the other are water.Pretreatment fluid consumption is 40 interpolations according to the mass ratio of water in pretreatment fluid and fur.At 40 ℃ of temperature, the time is 90min, then adds alkanoic PF (German Si Mahuaxue) 2.5g/l, and the time is 1h, afterwards standing over night;
Step 7, pickling: same common process;
Step 8, dries;
Step 9, moisture regain: moisture regain the consisting of of liquid: the industrial salt 75g/L that bleachinges and dyeing, all the other are water;
Step 10, dry-cleaning: add dry cleaning composition dry-cleaning rotation time 3min, 44 ℃ of dry-cleaning post-drying temperature;
Step 11, sour leather wetting: the consisting of of rewetting liquid: salt 70g/L, alkanoic PF (German Si Mahuaxue) 2.5g/l, at 40 ℃ of temperature, intermittent rotary 180min;
Step 12, softening: same common process;
Step 13, pickling: same common process;
Step 14, tanning: same common process;
Step 15, wet-milling;
Step 10 six, neutralization: same common process;
Step 10 seven, stuffing: same common process;
Step 10 eight, for the first time dry finishing;
Step 10 nine, retanning: same common process;
Step 2 ten, dyeing: same common process;
Step 2 11, for the second time dry finishing;
Step 2 12, finished product.
Claims (6)
1. the sour skin dry-cleaning technique of sheep's wool leather, it is characterized in that, comprise the following steps: the dry finishing → finished product of rewetting → drying → cropping → main immersion → fleshing → pre-treatment → pickling → dry → sour skin moisture regain → pulling scraper → dry-cleaning → sour leather wetting → softening → pickling → tanning → wet-milling → neutralization → stuffing → dry finishing → retanning for the first time → dyeing → for the second time; It is characterized in that, in described pre-treatment step, the component of the pretreatment fluid adopting is: synthetic fat liquor ST1.0-3.0g/l, sulphiting fatting agent EBC1.0-3.0g/l, mix fatting agent GF1.0-3.0g/l, surplus is water, and pretreatment fluid consumption is that 20-40 adds according to the mass ratio of water in pretreatment fluid and fur.
2. the sour skin dry-cleaning technique of sheep's wool according to claim 1 leather, is characterized in that, at the temperature 30-40 of described pre-treatment step ℃, time is 30-90min, then add alkanoic PF1.0-3.0g/l or polyacetals A-551.0-3.0g/l, the time is 1-3h, afterwards standing over night.
3. the sour skin dry-cleaning technique of sheep's wool according to claim 1 leather, is characterized in that, in described moisture regain step, and the consisting of of described moisture regain liquid: the industrial salt 50-80g/L that bleachinges and dyeing, all the other are water.The 5%-20% that moisture regain liquid consumption dries rear weight according to sour skin is evenly sprayed at hide surface.
4. the sour skin dry-cleaning technique of sheep's wool leather according to claim 1, is characterized in that, in described dry-cleaning step, described dry-cleaning rotation time is not higher than 5min, and dry-cleaning post-drying temperature is not higher than 50 ℃.
5. the sour skin dry-cleaning technique that sheep's wool according to claim 1 is removed from office, it is characterized in that, in described sour leather wetting step, consisting of of described rewetting liquid: salt 50-80g/L, alkanoic PF1.0-3.0g/l or polyacetals A-551.0-3.0g/l, at temperature 30-40 ℃, intermittent rotary 90-180min.
6. the sour skin dry-cleaning technique of sheep's wool according to claim 1 leather, is characterized in that, in for the first time described and dry finishing step for the second time, does not all need to dry-clean operation again.
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| CN201410362865.2A CN104195272B (en) | 2014-07-28 | 2014-07-28 | A kind of sour skin dry-cleaning technique of sheep's wool leather |
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| CN106521048A (en) * | 2016-10-27 | 2017-03-22 | 宁夏成丰农业科技开发股份有限公司 | Double-face leather integrated dyeing technology for lambskin |
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| CN106521048A (en) * | 2016-10-27 | 2017-03-22 | 宁夏成丰农业科技开发股份有限公司 | Double-face leather integrated dyeing technology for lambskin |
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Effective date of registration: 20180906 Address after: 314512 lambs Industrial Park, Shimen Town, Tongxiang City, Jiaxing, Zhejiang Patentee after: Zhejiang Zhonghui fur Technology Co., Ltd. Address before: 314511 Jiaxing City, Zhejiang Province, the South Gate of the Chong Fu town, Tongxiang City Patentee before: Zhejiang Zhonghui Fur & Leather Co., Ltd. |
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