CN102994657B - Method for treating slunk - Google Patents
Method for treating slunk Download PDFInfo
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- CN102994657B CN102994657B CN201210566096.9A CN201210566096A CN102994657B CN 102994657 B CN102994657 B CN 102994657B CN 201210566096 A CN201210566096 A CN 201210566096A CN 102994657 B CN102994657 B CN 102994657B
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Abstract
The invention provides a method for treating slunk. The method comprises the steps of: mainly soaking the slunk with water, coating, liming, deliming, softening, pickling and bating, wherein a coating liquor comprises the components of water, sodium sulfide, sodium hydrosulfide, a liming auxiliary agent and starch; and a liming liquor comprises the components of water, multielement mixed alkali, liming enzyme, sodium sulfide and a liming auxiliary agent. By adding the liming auxiliary agent and the starch in the coating process, the concentration of sodium sulfide is adjusted, the treatment effect on skin slunk grains can be enhanced, a smooth skin surface can be favorably obtained, and the cleanliness of the skin surface is increased; meanwhile, the multielement mixed alkali, in place of lime, can act together with the liming enzyme in the liming process, so that collagen fibers are favorably dispersed and fiber bundles are expanded. As lime is unnecessarily added to the coating and liming processes, the problems of high cost, serious pollution and equipment corrosion brought by lime can be avoided; and as the skin surface of the slunk is tender and susceptible, the problem of damage to the skin surface can be avoided due to no lime addition.
Description
Technical field
The invention belongs to leather processing technical field, relate in particular to a kind for the treatment of process of slunk.
Background technology
Crude rawhide material skin mainly consists of compositions such as collegen filament, scleroproein, spandex fiber, arrector pilorums, and hardening after it is dry, loses flexibility and flexibility, and frangibility is met high temperature and easily shunk, and need carry out process hides processing to it.Process hides is hair and the non-collegen filament etc. of removing rawhide, makes skin corium collegen filament appropriateness loose, fixing and strengthen, more a series of chemistry (comprising biological chemistry), the mechanical treatment such as is arranged.In the process hides course of processing, need to and open on the basis of collegen filament in protection, remove as far as possible other non-collegen filament materials, and liming processing can reach this object.
The importance that liming is processed is generally admitted by leather industry already, i.e. and " good skin is in grey cylinder ", the effect of liming directly affects the carrying out of process hides subsequent handling and the capability and performance of finished leather.In the process hides course of processing, if collegen filament are treated, just do not carry out tanning, finished product leather just there will be that body bone is stiff, grain is coarse, growth line is obvious, unit elongation is low, be prone to section and broken face phenomenon etc. when crooked, therefore, the structure of collegen filament must be carried out to appropriateness loose, to obtain, excellent property, good hand feeling are soft, not loose side, the finished product leather of broken face.And important too for the removal of non-collegen filament material, it includes various Saliva Orthanas, mucoid, spandex fiber and arrector pilorum etc., and the existence of this type of material can hinder in the process hides course of processing chemical substance to the infiltration of intracutaneous.
In traditional liming technique, all need to add lime as basic industrial chemicals.Lime has very strong dispersive ability to collegen filament, can thoroughly fiber be opened, and to guarantee feel and the fullness ratio of finished product leather, also can not cause larger damage to skin itself.But the use of lime can bring following problem simultaneously: hide is lower to lime absorption rate, need add 20% lime of hide weight at least just can reach the requirement of process hides; The lime overwhelming majority after use can be suspended in water, forms a large amount of mud, seriously polluted, to sewage disposal, causes difficulty; Liming technique need complete in drum equipment, and Wingdale is a kind of highly basic, can cause corrosion to equipment; Hide can form alkali swelling in liming operation, and thickness can reach more than 3 times, cause grain fragile and responsive, and lime easily forms the calcium spot that hardness is larger on rotary drum, increases the risk of hide grain damage; For preventing that hide from occurring greyness in the processing later stage, the unequal problem that dyes, need carry out deliming processing in the later stage, lime is all removed, in this step, need to introduce the deliming agent that price is higher, increased the cost of process for processing.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind for the treatment of process of slunk, in this treatment process without adding lime.
The invention provides a kind for the treatment of process of slunk, slunk passed through to following steps successively:
A) main immersion;
B) be coated with ash: add the slunk being coated with after lixivium is processed main immersion to be coated with ash and process; Described painting lixivium comprises water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch; The mass ratio of described water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent, starch and slunk is (50 ~ 100): (3.2 ~ 3.8): (2.2 ~ 2.85): (1.5 ~ 3): (0.09 ~ 0.12): 100;
C) liming: add liming liquid to carry out liming processing to the slunk being coated with after ash is processed; Described liming liquid comprises water, Diversity alkali, liming enzyme, sodium sulphite and auxiliary liming agent; The mass ratio of described water, Diversity alkali, liming enzyme, sodium sulphite, auxiliary liming agent and slunk is (150 ~ 250): (0.8 ~ 1.5): (0.05 ~ 0.2): (0.3 ~ 0.8): (1 ~ 2): 100; The Sheng power of described Diversity Jian Wei Zhejiang Shenghui Chemical Industry Co., Ltd can LR;
D) deliming;
E) softening;
F) pickling;
G) tanning.
Preferably, described main immersion is specially:
Add water, Soaking and sterilant to carry out main immersion processing to slunk, the mass ratio of described water, Soaking, sterilant and slunk is (80 ~ 150): (0.15 ~ 0.25): (0.15 ~ 0.3): 100; Described Soaking is the Prospread Gc purchased from Haining Bai Siteng trading company.
Preferably, described deliming is specially:
Add the slunk after water, ammonium sulfate and deliming agent are processed liming to carry out deliming processing, the mass ratio of described water, ammonium sulfate, deliming agent and slunk is (120 ~ 250): (0.8 ~ 1.5): (0.8 ~ 1.5): 100.
Preferably, described ammonium sulfate and deliming agent are divided into 3 ~ 6 parts and add.
Preferably, described softening being specially:
Add the slunk after water and macerating enzyme are processed deliming to soften processing, the mass ratio of described water, macerating enzyme and slunk is (120 ~ 250): (0.2 ~ 0.6): 100.
Preferably, described pickling is specially:
Slunk after adding water, sodium-chlor, poly-basic organic acid, formic acid and sulfuric acid to softening processing carries out pickling processing, the mass ratio of described water, sodium-chlor, poly-basic organic acid, formic acid, sulfuric acid and slunk is (50 ~ 120): (8 ~ 12): (0.5 ~ 1.5): (0.3 ~ 0.6): (0.2 ~ 0.5): 100, and described poly-basic organic acid is the SELLATAN PA of the auspicious leather material of moral company.
Preferably, described tanning is specially: add the slunk after water, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed pickling to carry out tanning processing, the mass ratio of described water, chromium powder, sodium bicarbonate, formic acid, mould inhibitor and slunk is (80 ~ 150): (7 ~ 10): (1.4 ~ 2.2): (0.5 ~ 1): (0.1 ~ 0.3): 100.
The invention provides a kind for the treatment of process of slunk, the method is passed through main immersion successively by slunk, be coated with ash, liming, deliming, softening, pickling and tanning are processed, wherein, described painting lixivium comprises water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch, described water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent, the mass ratio of starch and slunk is (50 ~ 100): (3.2 ~ 3.8): (2.2 ~ 2.85): (1.5 ~ 3): (0.09 ~ 0.12): 100, described liming liquid comprises water, Diversity alkali, liming enzyme, sodium sulphite and auxiliary liming agent, described water, Diversity alkali, liming enzyme, sodium sulphite, the mass ratio of auxiliary liming agent and slunk is (150 ~ 250): (0.8 ~ 1.5): (0.05 ~ 0.2): (0.3 ~ 0.8): (1 ~ 2): 100, the Sheng power of described Diversity Jian Wei Zhejiang Shenghui Chemical Industry Co., Ltd can LR.Compare with liming technique of the prior art, first, the present invention is by the adding of auxiliary liming agent and starch in being coated with ash process, and capable of regulating is coated with degree Beaume and the viscosity of lixivium, by adjusting the concentration of sodium sulphite, can strengthen the treatment effect to hide tread, be beneficial to and obtain smooth surface, increase the cleanliness factor of surface, simultaneously, in liming process, Diversity alkali Sheng power can replace lime and liming enzyme acting in conjunction by LR, contributes to dispersion agent protofibril and opens fibrous bundle; Secondly, the present invention is coated with in ash and liming operation without adding lime, the problem of high, the seriously polluted and equipment corrosion of the cost of having avoided lime to bring; Again, the tender and lovely sensitivity of slunk surface, without adding lime can avoid the problem of its grain damage causing.
Experimental result shows, the slunk longitudinal tensile strength after processing by the inventive method is 28.5 ~ 32kg/cm, and machine direction tear is 9.5 ~ 11.5kg, and transverse tensile strength is 23.5 ~ 26.5kg/cm, and cross direction tear strength is 6.5 ~ 9.5kg.
Embodiment
The invention provides a kind for the treatment of process of slunk, slunk is passed through to following steps successively: A) main immersion; B) be coated with ash, add the slunk being coated with after lixivium is processed main immersion to be coated with ash and process; Described painting lixivium comprises water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch, and the mass ratio of described water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent, starch and slunk is (50 ~ 100): (3.2 ~ 3.8): (2.2 ~ 2.85): (1.5 ~ 3): (0.09 ~ 0.12): 100; C) liming: add liming liquid to carry out liming processing to the slunk being coated with after ash is processed; Described liming liquid comprises water, Diversity alkali, liming enzyme, sodium sulphite and auxiliary liming agent, and the mass ratio of described water, Diversity alkali, liming enzyme, sodium sulphite, auxiliary liming agent and slunk is (150 ~ 250): (0.8 ~ 1.5): (0.05 ~ 0.2): (0.3 ~ 0.8): (1 ~ 2): 100; The Sheng power of described Diversity Jian Wei Zhejiang Shenghui Chemical Industry Co., Ltd can LR; D) deliming; E) softening; F) pickling; G) tanning.
Described slunk be retrieved as method well known to those skilled in the art, there is no special restriction.The ox-hide that slunk described in the present invention comes for birth peels in latter 1 month, its through rawhide sorting, cut leg, immersion and in advance except the hide obtaining after meat in advance.Wherein, described rawhide sorting, cut leg, immersion and in advance except the method for meat is method well known to those skilled in the art in advance, there is no special restriction.
Described main immersion is specially: add water, Soaking and sterilant to carry out main immersion processing to slunk, the mass ratio of described water, Soaking, sterilant and slunk is (80 ~ 150): (0.15 ~ 0.25): (0.15 ~ 0.3): 100; Be preferably (90 ~ 120): (0.18 ~ 0.22): (0.15 ~ 0.25): 100, described Soaking is the Prospread Gc purchased from Haining Bai Siteng trading company.Described sterilant is sterilant well known to those skilled in the art, there is no special restriction.The method that described main immersion is processed is method well known to those skilled in the art, there is no special restriction, in the present invention preferably at rotary drum for processing 20 ~ 28h.Described Prospread Gc is biotype Soaking, can increase the weight of the effect of soaking, and can not increase the weight of to fluff because of immersion effect in edge protection the part between the ribs and the hips position effectively.
Described painting ash is specially: add the slunk being coated with after lixivium is processed main immersion to be coated with ash and process; Described painting lixivium comprises water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch, the mass ratio of described water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent, starch and slunk is (50 ~ 100): (3.2 ~ 3.8): (2.2 ~ 2.85): (1.5 ~ 3): (0.09 ~ 0.12): 100, be preferably (50 ~ 80): (3.2 ~ 3.6): (2.2 ~ 2.6): (1.8 ~ 2.5): (0.09 ~ 0.12): 100, more preferably (50 ~ 60): (3.2 ~ 3.6): (2.2 ~ 2.6): (1.8 ~ 2.5): (0.09 ~ 0.12): 100.The effect that adds starch in the present invention is that the degree Beaume of adjusting painting lixivium is 24 ~ 28, and being preferably the degree Beaume that adds starch adjusting to be coated with lixivium is 25 ~ 27, to meet the requirement that is coated with ash process.Described auxiliary liming agent is that auxiliary liming agent well known to those skilled in the art can there is no special restriction.The described method that is coated with ash processing is working method well known to those skilled in the art, there is no special restriction, preferably outside rotary drum, processes 0.5 ~ 1.5h in the present invention, and more preferably 0.8 ~ 1.2h, after painting ash manipulation finishes, preferably places 5 ~ 6h.The present invention is coated with in ash process by adding sodium sulphite and Sodium sulfhydrate jointly to adjust the concentration that is coated with sodium sulphite in lixivium, and by adding a large amount of auxiliary liming agents and a small amount of starch that the degree Beaume that is coated with lixivium is adjusted to and meets operation requirement, can guarantee without adding lime also can reach corresponding effect, also can guarantee to be coated with the viscosity of lixivium, be beneficial to operation.Be coated with the adjustment of sodium sulphite concentration in lixivium, can strengthen the treatment effect to slunk tread, be conducive to obtain smooth surface, increase the cleanliness factor of surface, and the increase of sodium sulphite concentration also can make up the deficiency of liming operation.
Described liming is specially: add liming liquid to carry out liming processing to the slunk being coated with after ash is processed; Described liming liquid comprises water, Diversity alkali, liming enzyme, sodium sulphite and auxiliary liming agent, the mass ratio of described water, Diversity alkali, liming enzyme, sodium sulphite, auxiliary liming agent and slunk is (150 ~ 250): (0.8 ~ 1.5): (0.05 ~ 0.2): (0.3 ~ 0.8): (1 ~ 2): 100, be preferably (180 ~ 220): (1.2 ~ 1.5): (0.08 ~ 0.15): (0.4 ~ 0.6): (1.2 ~ 1.7): 100, the Sheng power of described Diversity Jian Wei Zhejiang Shenghui Chemical Industry Co., Ltd can LR, and its product description is as follows:
Sheng power can LR
Chemical constitution: alkali and additive compound thing
Fundamental characteristics: Sheng Li can LR be a kind of multi-functional auxiliary liming agent.Infiltration evenly, action temperature and, can saponification grease, loose fiber, opens growth line, improves yield of leather and rate of grade, effectively reduces the generation of leather-making mud.
Leading indicator: outward appearance: translucent jelly shape
Effective constituent (%): >=40
PH value (1:10): more than 12
Application: Sheng Li can directly add rotary drum or paddle-tumble by LR.
The highest consumption is 4% of fleshing tare weight, and the number of consumption depends on required alternative amount of lime and desired turgidity.
Safety precaution: Sheng Li can LR be highly basic, has corrodibility, during operation, must dress appliances for labor protection.
According to specification sheets, described Sheng power can LR be auxiliary liming agent, its alternative lime, but because the fibrage of slunk is very tight, and fiber is tiny tender and lovely, to having relatively high expectations of technique, therefore slunk is produced in processing and still cannot be adopted ashless treatment process at present, the present invention, by the adjustment to other components, realizes and makes it all replace the ashless treatment process of lime.
Described liming enzyme is liming enzyme well known to those skilled in the art, and its source be there is no to special restriction.The method that described liming is processed is method well known to those skilled in the art, there is no special restriction, in the present invention preferably at rotary drum for processing 18 ~ 22h, more preferably 20 ~ 21h.Further, after preferably rotating 10h in rotary drum in the present invention, then add liming enzyme.In the liming later stage, add liming enzyme can play the effect that continues loosen collagen fibre, can also further increase the cleanliness factor of surface simultaneously.
According to the present invention, the described Diversity alkali power of containing can the alternative lime of LR, contribute to dispersion agent protofibril and open fibrous bundle, but its alkalescence is obviously weaker than lime, less to the damage of fiber, is especially beneficial to the operation of the slunk that fiber is tenderer.
Described deliming is specially: add the slunk after water, ammonium sulfate and deliming agent are processed liming to carry out deliming processing, the mass ratio of described water, ammonium sulfate, deliming agent and slunk is (120 ~ 250): (0.8 ~ 1.5): (0.8 ~ 1.5): 100, be preferably (150 ~ 220): (1.0 ~ 1.3): (1.0 ~ 1.3): 100.Described deliming agent is deliming agent well known to those skilled in the art, and its source be there is no to special restriction.The method that described deliming is processed is method well known to those skilled in the art, there is no special restriction, in the present invention preferably at rotary drum for processing 2 ~ 3h, more preferably 2.2 ~ 2.8h.In order to improve, deliming processing is carried out in the environment relaxing, the present invention is preferably equally divided into 3 ~ 6 parts by ammonium sulfate and deliming agent, according to a small amount of principle repeatedly, carries out deliming, more preferably ammonium sulfate and deliming agent is equally divided into 4 ~ 5 parts.By the method for deliming progressively repeatedly, can guarantee the collegen filament environment in relaxing always, when reaching deliming effect, guarantee that fiber is not damaged.
Described softening being specially: add the slunk after water and macerating enzyme are processed deliming to soften processing, the mass ratio of described water, macerating enzyme and slunk is (120 ~ 250): (0.2 ~ 0.6): 100, be preferably (150 ~ 220): (0.3 ~ 0.5): 100.Described macerating enzyme is macerating enzyme well known to those skilled in the art, and its source be there is no to special restriction.The method of described softening processing is method well known to those skilled in the art, there is no special restriction.In the present invention preferably at rotary drum for processing 15 ~ 20min, more preferably 16 ~ 18min.
Described pickling is specially: the slunk after adding water, sodium-chlor, poly-basic organic acid, formic acid and sulfuric acid to softening processing carries out pickling processing, the mass ratio of described water, sodium-chlor, poly-basic organic acid, formic acid, sulfuric acid and slunk is (50 ~ 120): (8 ~ 12): (0.5 ~ 1.5): (0.3 ~ 0.6): (0.2 ~ 0.5): 100, be preferably (50 ~ 100): (9 ~ 11): (0.8 ~ 1.2): (0.4 ~ 0.6): (0.3 ~ 0.5): 100, described poly-basic organic acid is the SELLATAN PA of the auspicious leather material of moral company, and its product description is as follows:
SELLATAN PA lid is acid for a kind of novel pickling, has excellent cost performance aspect less salt pickling.
Efficient and the complete pickling solution of feature of environmental protection SELLATAN PA lid-:
SELLATAN PA lid is whole pickling, tanning and carries an integral part in alkali system.In the situation that do not change the consumption that the characteristic of technical process or the finished product can significantly reduce salt (sodium-chlor) and vitriol.
Compare with common pickling system, this solution can be accelerated the infiltration of chrome tanning process.
In addition, SELLATAN PA lid also can substitute formic acid in the operation of water field, and its Performance Ratio formic acid is better, can improve level-dyeing property and the staining power of dyeing.
Excellent cost performance:
SELLATAN PA lid can obtain good technological effect in the situation that not increasing production cost.
SELLATAN PA lid can be used for the production of white wet leather and wet blue leather, also can be applicable to the production of full vegetable tanning leather.
Described to soak acid-treated method be method well known to those skilled in the art, there is no special restriction, in the present invention preferably at rotary drum for processing 10 ~ 14h, more preferably 11 ~ 13h.
In the present invention, add auxiliary pickling agent poly-basic organic acid SELLATAN PA, it can continue to disperse the softening fiber of processing rear slunk, and meanwhile, the lengthening of pickling time can make up the deficiency of liming.
Described tanning is specially: add the slunk after water, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed pickling to carry out tanning processing, the mass ratio of described water, chromium powder, sodium bicarbonate, formic acid, mould inhibitor and slunk is (80 ~ 150): (7 ~ 10): (1.4 ~ 2.2): (0.5 ~ 1): (0.1 ~ 0.3): 100, be preferably (90 ~ 130): (9 ~ 10): (1.6 ~ 2.0): (0.8 ~ 1): (0.2 ~ 0.3): 100.Described mould inhibitor is mould inhibitor well known to those skilled in the art, there is no special restriction, in the present invention preferably at rotary drum for processing 16 ~ 20h, more preferably 17 ~ 19h.
In tannery, add chromium powder can protect collegen filament injury-free; the present invention simultaneously also preferred tanning processes the later stage, and more preferably tanning is processed after 10h, and the pH value of tan liquor is adjusted to 3.6 ~ 4; more preferably 3.7 ~ 3.9, can guarantee fullness ratio and the degree of packing after hide tanning.
The present invention is coated with in ash and liming operation without adding lime, the problem of high, the seriously polluted and equipment corrosion of the cost of having avoided lime to bring; The tender and lovely sensitivity of slunk surface, without adding lime can avoid the problem of its grain damage causing.
Experimental result shows, the slunk longitudinal tensile strength after processing by the inventive method is 28.5 ~ 32kg/cm, and machine direction tear is 9.5 ~ 11.5kg, and transverse tensile strength is 23.5 ~ 26.5kg/cm, and cross direction tear strength is 6.5 ~ 9.5kg.
In order to further illustrate the present invention, below in conjunction with embodiment, the treatment process of a kind of slunk provided by the invention is described in detail.
In following examples reagent used be commercially available, the ox-hide that described slunk comes for birth peels in latter 1 month, its through rawhide sorting, cut leg, immersion and in advance except the hide obtaining after meat in advance.
Embodiment 1
1.1 main immersions
Add water, Prospread Gc and sterilant, in rotary drum, slunk is carried out to main immersion and process 24h, wherein the mass ratio of water, Prospread Gc, sterilant and slunk is 110:0.2:0.2:100.
1.2 are coated with ash
Add slunk after water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch are processed the main immersion obtaining in 1.1 outside rotary drum to be coated with ash and process 1h, then place 5h, wherein the mass ratio of water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent, starch and slunk is 50:3.5:2.5:2:0.1:100.
1.3 liming
Add water, the Diversity alkali power of containing can LR, liming enzyme, sodium sulphite and the auxiliary liming agent slunk after the painting ash obtaining in 1.2 being processed in rotary drum carries out liming processing 20h, wherein water, Sheng Li can LR, the mass ratio of liming enzyme, sodium sulphite, auxiliary liming agent and slunk is 200:1.5:0.1:0.5:1.5:100.
1.4 deliming
Add, water, ammonium sulfate and the slunk of deliming agent after the liming obtaining in 1.3 being processed in rotary drum carry out deliming and process 0.6h, wherein the mass ratio of water, ammonium sulfate, deliming agent and slunk is 200:0.3:0.3:100, add again the ammonium sulfate of slunk quality 0.3% and the deliming agent of slunk quality 0.3t%, rotate after 0.6h, continue to repeat this step 2 time, the total amount that finally adds ammonium sulfate is the 1.2t% of slunk quality, adding the total amount of deliming agent is the 1.2t% of slunk quality, and the treatment time is total up to 2.5h.
1.5 softening
Add the slunk after water and macerating enzyme are processed the deliming obtaining in 1.4 in rotary drum soften processing 15min, wherein the mass ratio of water, macerating enzyme and slunk is 200:0.4:100.
1.6 pickling
Add water, sodium-chlor, SELLATAN PA, formic acid and sulfuric acid, in rotary drum, the slunk after the softening processing obtaining in 1.5 is carried out to pickling and process 12h, wherein the mass ratio of water, sodium-chlor, SELLATAN PA, formic acid, sulfuric acid and slunk is 60:10:1:0.5:0.4:100.
1.7 tanning
Adding slunk after water, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed the pickling obtaining in 1.6 in rotary drum to carry out tanning processes after 12h, with sodium formiate and sodium bicarbonate, the pH value of tanning solution is adjusted to 3.8, continue to process 6h, wherein the mass ratio of water, chromium powder, sodium bicarbonate, sodium formiate, mould inhibitor and slunk is 110:10:1.8:1:0.3:100.
Slunk after being processed in 1.7 is carried out to tensile strength and tear strength test, and obtaining its longitudinal tensile strength is 30kg/cm, and transverse tensile strength is 26kg/cm, and machine direction tear is 10kg, and cross direction tear strength is 9kg.
Embodiment 2
2.1 main immersions
Add water, Prospread Gc and sterilant, in rotary drum, slunk is carried out to main immersion and process 24h, wherein the mass ratio of water, Prospread Gc, sterilant and slunk is 120:0.22:0.2:100.
2.2 are coated with ash
Add slunk after water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch are processed the main immersion obtaining in 2.1 outside rotary drum to be coated with ash and process 1h, then place 5h, wherein the mass ratio of water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent, starch and slunk is 60:3.6:2.5:2:0.1:100.
2.3 liming
Add water, the Diversity alkali power of containing can LR, liming enzyme, sodium sulphite and the auxiliary liming agent slunk after the painting ash obtaining in 2.2 being processed in rotary drum carries out liming processing 20h, wherein water, Sheng Li can LR, the mass ratio of liming enzyme, sodium sulphite, auxiliary liming agent and slunk is 200:1.2:0.1:0.5:1.6:100.
2.4 deliming
Add slunk after water, ammonium sulfate and deliming agent are processed the liming obtaining in 2.3 in rotary drum to carry out deliming and process 0.6h, wherein the mass ratio of water, ammonium sulfate, deliming agent and slunk is 200:0.3:0.3:100, add again the ammonium sulfate of slunk quality 0.3% and the deliming agent of slunk quality 0.3%, rotate after 0.6h, continue to repeat this step 2 time, the total amount that finally adds ammonium sulfate is slunk quality 1.2%, adding the total amount of deliming agent is slunk quality 1.2%, and the treatment time is total up to 2.5h.
2.5 softening
Add the slunk after water and macerating enzyme are processed the deliming obtaining in 2.4 in rotary drum soften processing 15min, wherein the mass ratio of water, macerating enzyme and slunk is 200:0.4:100.
2.6 pickling
Add water, sodium-chlor, SELLATAN PA, formic acid and sulfuric acid, in rotary drum, the slunk after the softening processing obtaining in 2.5 is carried out to pickling and process 12h, wherein the mass ratio of water, sodium-chlor, SELLATAN PA, formic acid, sulfuric acid and slunk is 60:10:1:0.5:0.4:100.
2.7 tanning
Adding slunk after water, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed the pickling obtaining in 2.6 in rotary drum to carry out tanning processes after 12h, with sodium formiate and sodium bicarbonate, the pH value of tanning solution is adjusted to 3.8, continue to process 6h, wherein the mass ratio of water, chromium powder, sodium bicarbonate, sodium formiate, mould inhibitor and slunk is 110:10:1.8:1:0.3:100.
Embodiment 3
3.1 main immersions
Add water, Prospread Gc and sterilant, in rotary drum, slunk is carried out to main immersion and process 24h, wherein the mass ratio of water, Prospread Gc, sterilant and slunk is 115:0.22:0.2:100.
3.2 are coated with ash
Add slunk after water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch are processed the main immersion obtaining in 3.1 outside rotary drum to be coated with ash and process 1h, then place 6h, wherein the mass ratio of water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent, starch and slunk is 60:3.6:2.5:2:0.1:100.
3.3 liming
Add water, the Diversity alkali power of containing can LR, liming enzyme, sodium sulphite and the auxiliary liming agent slunk after the painting ash obtaining in 3.2 being processed in rotary drum carries out liming processing 20h, wherein water, Sheng Li can LR, the mass ratio of liming enzyme, sodium sulphite, auxiliary liming agent and slunk is 200:1.2:0.1:0.5:1.6:100.
3.4 deliming
Add slunk after water, ammonium sulfate and deliming agent are processed the liming obtaining in 3.3 in rotary drum to carry out deliming and process 0.6h, wherein the mass ratio of water, ammonium sulfate, deliming agent and slunk is 200:0.3:0.3:100, add again the ammonium sulfate of slunk quality 0.3% and the deliming agent of slunk quality 0.3%, rotate after 0.6h, continue to repeat this step 2 time, the total amount that finally adds ammonium sulfate is 1.2% of slunk quality, adding the total amount of deliming agent is 1.2% of slunk quality, and the treatment time is total up to 2.5h.
3.5 softening
Add the slunk after water and macerating enzyme are processed the deliming obtaining in 3.4 in rotary drum soften processing 15min, wherein the mass ratio of water, macerating enzyme and slunk is 220:0.5:100.
3.6 pickling
Add water, sodium-chlor, SELLATAN PA, formic acid and sulfuric acid, in rotary drum, the slunk after the softening processing obtaining in 3.5 is carried out to pickling and process 12h, wherein the mass ratio of water, sodium-chlor, SELLATAN PA, formic acid, sulfuric acid and slunk is 60:10:1:0.5:0.4:100.
3.7 tanning
Adding slunk after water, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed the pickling obtaining in 3.6 in rotary drum to carry out tanning processes after 12h, with sodium formiate and sodium bicarbonate, the pH value of tanning solution is adjusted to 3.8, continue to process 6h, wherein the mass ratio of water, chromium powder, sodium bicarbonate, sodium formiate, mould inhibitor and slunk is 110:10:1.8:1:0.3:100.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a treatment process for slunk, is characterized in that, slunk is passed through to following steps successively: A) main immersion;
B) be coated with ash: add the slunk being coated with after lixivium is processed main immersion to be coated with ash and process; Described painting lixivium comprises water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch; The mass ratio of described water, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent, starch and slunk is (50 ~ 100): (3.2 ~ 3.8): (2.2 ~ 2.85): (1.5 ~ 3): (0.09 ~ 0.12): 100;
C) liming: add liming liquid to carry out liming processing to the slunk being coated with after ash is processed; Described liming liquid comprises water, Diversity alkali, liming enzyme, sodium sulphite and auxiliary liming agent; The mass ratio of described water, Diversity alkali, liming enzyme, sodium sulphite, auxiliary liming agent and slunk is (150 ~ 250): (0.8 ~ 1.5): (0.05 ~ 0.2): (0.3 ~ 0.8): (1 ~ 2): 100; The Sheng power of described Diversity Jian Wei Zhejiang Shenghui Chemical Industry Co., Ltd can LR;
D) deliming;
E) softening;
F) pickling;
G) tanning.
2. treatment process according to claim 1, is characterized in that, described main immersion is specially:
Add water, Soaking and sterilant to carry out main immersion processing to slunk, the mass ratio of described water, Soaking, sterilant and slunk is (80 ~ 150): (0.15 ~ 0.25): (0.15 ~ 0.3): 100; Described Soaking is the Prospread Gc purchased from Haining Bai Siteng trading company.
3. treatment process according to claim 1, is characterized in that, described deliming is specially:
Add the slunk after water, ammonium sulfate and deliming agent are processed liming to carry out deliming processing, the mass ratio of described water, ammonium sulfate, deliming agent and slunk is (120 ~ 250): (0.8 ~ 1.5): (0.8 ~ 1.5): 100.
4. treatment process according to claim 3, is characterized in that, described ammonium sulfate and deliming agent are divided into 3 ~ 6 parts to be added.
5. treatment process according to claim 1, is characterized in that, described softening being specially:
Add the slunk after water and macerating enzyme are processed deliming to soften processing, the mass ratio of described water, macerating enzyme and slunk is (120 ~ 250): (0.2 ~ 0.6): 100.
6. treatment process according to claim 1, is characterized in that, described pickling is specially:
Slunk after adding water, sodium-chlor, poly-basic organic acid, formic acid and sulfuric acid to softening processing carries out pickling processing, the mass ratio of described water, sodium-chlor, poly-basic organic acid, formic acid, sulfuric acid and slunk is (50 ~ 120): (8 ~ 12): (0.5 ~ 1.5): (0.3 ~ 0.6): (0.2 ~ 0.5): 100, and described poly-basic organic acid is the SELLATAN PA of the auspicious leather material of moral company.
7. treatment process according to claim 1, is characterized in that, described tanning is specially:
Add the slunk after water, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed pickling to carry out tanning processing, the mass ratio of described water, chromium powder, sodium bicarbonate, formic acid, mould inhibitor and slunk is (80 ~ 150): (7 ~ 10): (1.4 ~ 2.2): (0.5 ~ 1): (0.1 ~ 0.3): 100.
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| CN103627825A (en) * | 2013-11-20 | 2014-03-12 | 邱占伟 | Method for carrying out softening treatment on leather |
| CN109576412A (en) * | 2018-12-17 | 2019-04-05 | 辽宁富新新材料有限公司 | A kind of preparation method of high-tear strength automotive leather |
| CN109536646B (en) * | 2018-12-29 | 2021-08-10 | 峰安皮业股份有限公司 | Production method of environment-friendly semi-vegetable tanning wax modified cow leather |
| CN110669878B (en) * | 2019-10-26 | 2021-09-10 | 辛集市凌爵皮革有限责任公司 | Fetal calf leather processing technology, fetal calf blue wet leather, fetal calf suede leather and technology |
| CN113718066B (en) * | 2020-12-25 | 2022-08-19 | 宁夏金海皮业有限责任公司 | Production process for producing horse gear leather |
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