CN102994657A - Method for treating slunk - Google Patents
Method for treating slunk Download PDFInfo
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- CN102994657A CN102994657A CN2012105660969A CN201210566096A CN102994657A CN 102994657 A CN102994657 A CN 102994657A CN 2012105660969 A CN2012105660969 A CN 2012105660969A CN 201210566096 A CN201210566096 A CN 201210566096A CN 102994657 A CN102994657 A CN 102994657A
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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 the leather processing technical field, relate in particular to a kind for the treatment of process of slunk.
Background technology
Crude rawhide material skin mainly is made 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 needs that it is carried out process hides and processes.Process hides is hair and the non-collegen filament etc. of removing rawhide, makes loose, the fixing and reinforcement of skin corium collegen filament appropriateness, a series of chemistry (comprising biological chemistry), the mechanical treatment in order such as is put again.Need to and open on the basis of collegen filament in protection in the process hides course of processing, remove as far as possible other non-collegen filament materials, and the liming processing can reach this purpose.
The importance that liming is processed is generally admitted by leather industry already, i.e. and " good skin is in the 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, just do not carry out tanning if collegen filament are treated, finished product leather will go out to appear that bone is stiff, grain is coarse, the growth line is obvious, unit elongation is low, be prone to section and broken face phenomenon etc. when crooked, therefore, it is loose the structure of collegen filament must to be carried out appropriateness, in order to obtain excellent property, good hand feeling 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.
All need add lime in traditional liming technique as the industrial chemicals on basis.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 the lime absorption rate, and 20% the lime that need add hide weight at least just can reach the requirement of process hides; The lime overwhelming majority after the use can be suspended in the water, forms a large amount of mud, and is seriously polluted, causes difficulty to sewage disposal; Liming technique needs to finish in drum equipment, and Wingdale is a kind of highly basic, can cause corrosion to equipment; Hide can form alkali swelling in the liming operation, thickness can reach more than 3 times, cause grain fragile and responsive, and lime easily forms the larger calcium spot of hardness at rotary drum, increases the risk of hide grain damage; For preventing that hide from greyness occurring in the processing later stage, the unequal problem that dyes, need to carry out deliming in the later stage and process, lime is all removed, need in this step to introduce the higher deliming agent of price, 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, need not to add lime in this treatment process.
The invention provides a kind for the treatment of process of slunk, slunk passed through following steps successively:
A) main immersion;
B) be coated with ash: add the slunk that is coated with after lixivium is processed main immersion and be coated with grey the processing; The described lixivium that is coated with 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 the slunk that is coated with after ash is processed is carried out the liming processing; 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; But the Sheng power LR that described Diversity alkali is Zhejiang Shenghui Chemical Industry Co., Ltd;
D) deliming;
E) softening;
F) pickling;
G) tanning.
Preferably, described main immersion is specially:
Add entry, Soaking and sterilant slunk is led the immersion processing, 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 for thinking to rise the Prospread Gc of trading company available from Haining one hundred.
Preferably, described deliming is specially:
The slunk that adds after entry, ammonium sulfate and deliming agent are processed liming carries out the deliming processing, and 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:
The slunk that adds after entry and macerating enzyme are processed deliming softens processing, and the mass ratio of described water, macerating enzyme and slunk is (120 ~ 250): (0.2 ~ 0.6): 100.
Preferably, described pickling is specially:
Add entry, sodium-chlor, poly-basic organic acid, formic acid and sulfuric acid the slunk that softens after processing is carried out the 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: the slunk that adds after entry, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed pickling carries out the tanning processing, and 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 soaked slunk successively through main, be coated with ash, liming, deliming, softening, pickling and tanning are processed, wherein, the described lixivium that is coated with 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; But the Sheng power LR that described Diversity alkali is Zhejiang Shenghui Chemical Industry Co., Ltd.Compare with liming technique of the prior art, at first, by the adding of auxiliary liming agent and starch, capable of regulating is coated with degree Beaume and the viscosity of lixivium in being coated with ash process in the present invention, by adjusting the concentration of sodium sulphite, can strengthen the treatment effect to the hide tread, be beneficial to and obtain smooth surface, increase the cleanliness factor of surface, simultaneously, but Diversity alkali Sheng power LR can replace lime and liming enzyme acting in conjunction in the liming process, helps the dispersion agent protofibril and opens fibrous bundle; Secondly, the present invention is coated with in ash and the liming operation and need not to add 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 need not to add the problem that lime can be avoided its grain damage that causes.
Experimental result shows that 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 following steps successively: A) main immersion; B) be coated with ash, add the slunk that is coated with after lixivium is processed main immersion and be coated with grey the processing; The described lixivium that is coated with 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 the slunk that is coated with after ash is processed is carried out the liming processing; 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; But the Sheng power LR that described Diversity alkali is Zhejiang Shenghui Chemical Industry Co., Ltd; D) deliming; E) softening; F) pickling; G) tanning.
The method well known to those skilled in the art that is retrieved as of described slunk gets final product, and there is no special restriction.The ox-hide that slunk described in the present invention comes for birth peels in rear 1 month, its through rawhide sorting, cut leg, pre-immersion and pre-hide except obtaining after the meat.Wherein, described rawhide sorting, cut leg, pre-immersion and pre-method except meat is that method well known to those skilled in the art gets final product, there is no special restriction.
Described main immersion is specially: add entry, Soaking and sterilant slunk is led the immersion processing, 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 for thinking to rise the Prospread Gc of trading company available from Haining one hundred.Described sterilant is that sterilant well known to those skilled in the art gets final product, and there is no special restriction.The method that described main immersion is processed is that method well known to those skilled in the art gets final product, and there is no special restriction, among the present invention preferably at rotary drum for processing 20 ~ 28h.Described Prospread Gc is the biotype Soaking, can increase the weight of the effect of soaking, and can not increase the weight of to fluff because of the immersion effect in edge protection the part between the ribs and the hips position effectively.
The described ash that is coated with is specially: add the slunk that is coated with after lixivium is processed main immersion and be coated with grey the processing; The described lixivium that is coated with 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 among the present invention is that to regulate the degree Beaume that is coated with lixivium be 24 ~ 28, is preferably to add starch to regulate the degree Beaume that is coated with lixivium be 25 ~ 27, to satisfy 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.Described to be coated with the method that ash processes be that working method well known to those skilled in the art get final product, there is no special restriction, preferred processing 0.5 ~ 1.5h rotary drum outside among the present invention, 0.8 ~ 1.2h more preferably, be coated with the ash manipulation end after, preferably place 5 ~ 6h.The present invention is coated with in the ash process by adding the common concentration that is coated with sodium sulphite in the lixivium of adjusting of sodium sulphite and Sodium sulfhydrate, and the degree Beaume that will be coated with lixivium by adding a large amount of auxiliary liming agents and a small amount of starch is adjusted to and meets the operation requirement, can guarantee that need not to add 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 the lixivium, can strengthen the treatment effect to the slunk tread, be conducive to obtain smooth surface, increase the cleanliness factor of surface, and the increase of sodium sulphite concentration also can remedy the deficiency of liming operation.
Described liming is specially: add liming liquid the slunk that is coated with after ash is processed is carried out the liming processing; 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, but the Sheng power LR that described Diversity alkali is Zhejiang Shenghui Chemical Industry Co., Ltd, its product description is as follows:
But Sheng power LR
Chemical constitution: alkali and additive compound thing
Fundamental characteristics: but Sheng Li LR is a kind of multi-functional auxiliary liming agent.Infiltration evenly, action temperature and, can the saponification grease, loose fiber is opened the 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
Use: but Sheng Li LR can directly add rotary drum or paddle-tumble.
The highest consumption is 4% of fleshing tare weight, consumption how much depend on required alternative amount of lime and desired turgidity.
Safety precaution: but Sheng Li LR is highly basic, has corrodibility, must dress appliances for labor protection during operation.
According to specification sheets, but described Sheng power LR is auxiliary liming agent, its alternative lime, but because the fibrage of slunk is very tight, and fiber is tiny tender and lovely, and to having relatively high expectations of technique, therefore at present slunk production still can't be adopted ashless treatment process in processing, the present invention realizes making it all to replace the ashless treatment process of lime by the adjustment to other components.
Described liming enzyme is that liming enzyme well known to those skilled in the art gets final product, and its source be there is no special restriction.The method that described liming is processed is that method well known to those skilled in the art gets final product, and there is no special restriction, among the present invention preferably at rotary drum for processing 18 ~ 22h, more preferably 20 ~ 21h.Further, preferably in rotary drum, rotate after the 10h among the present invention, add again liming enzyme.Add liming enzyme in the liming later stage and can play the effect that continues loosen collagen fibre, can also further increase the cleanliness factor of surface simultaneously.
According to the present invention, but described Diversity alkali is contained the alternative lime of power LR, help the dispersion agent protofibril and open fibrous bundle, but its alkalescence obviously is weaker than lime, and is less to the damage of fiber, especially is beneficial to the operation of the tenderer slunk of fiber.
Described deliming is specially: the slunk that adds after entry, ammonium sulfate and deliming agent are processed liming carries out the 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 that deliming agent well known to those skilled in the art gets final product, and its source be there is no special restriction.The method that described deliming is processed is that method well known to those skilled in the art gets final product, and there is no special restriction, among the present invention preferably at rotary drum for processing 2 ~ 3h, more preferably 2.2 ~ 2.8h.In order to improve the deliming processing is carried out in the environment that relaxes, the present invention preferably is equally divided into 3 ~ 6 parts with ammonium sulfate and deliming agent, carries out deliming according to a small amount of principle repeatedly, more preferably ammonium sulfate and deliming agent is equally divided into 4 ~ 5 parts.By the method for deliming progressively repeatedly, can guarantee that collegen filament can be in the environment that relaxes always, when reaching the deliming effect, guarantee that fiber is not damaged.
Described softening being specially: the slunk that adds after entry and macerating enzyme are processed deliming softens 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 that macerating enzyme well known to those skilled in the art gets final product, and its source be there is no special restriction.The method of described softening processing is that method well known to those skilled in the art gets final product, and there is no special restriction.Among the present invention preferably at rotary drum for processing 15 ~ 20min, more preferably 16 ~ 18min.
Described pickling is specially: add entry, sodium-chlor, poly-basic organic acid, formic acid and sulfuric acid the slunk that softens after processing is carried out the 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 that a kind of novel pickling is with acid, in the cost performance that has excellence aspect the 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 a integral part in the alkali system.In the situation of the characteristic that does not change technical process or the finished product, can significantly reduce the consumption of 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 does not increase 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 that method well known to those skilled in the art gets final product, and there is no special restriction, among the present invention preferably at rotary drum for processing 10 ~ 14h, more preferably 11 ~ 13h.
Add auxiliary pickling agent poly-basic organic acid SELLATAN PA among the present invention, it can continue to disperse the softening fiber of processing rear slunk, and simultaneously, the lengthening of pickling time can remedy the deficiency of liming.
Described tanning is specially: the slunk that adds after entry, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed pickling carries out the 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 that mould inhibitor well known to those skilled in the art gets final product, and there is no special restriction, among the present invention preferably at rotary drum for processing 16 ~ 20h, more preferably 17 ~ 19h.
Adding chromium powder in the tannery can protect collegen filament injury-free; simultaneously the present invention also preferred tanning processes the later stage, behind the more preferably tanning processing 10h, 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 the hide tanning.
The present invention is coated with in ash and the liming operation and need not to add 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 need not to add the problem that lime can be avoided its grain damage that causes.
Experimental result shows that 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 specify 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 used reagent be commercially available, the ox-hide that described slunk comes for birth peels in rear 1 month, its through rawhide sorting, cut leg, pre-immersion and pre-hide except obtaining after the meat.
Embodiment 1
1.1 main immersion
Add entry, Prospread Gc and sterilant and in rotary drum slunk is led immersion processing 24h, wherein the mass ratio of water, Prospread Gc, sterilant and slunk is 110:0.2:0.2:100.
1.2 be coated with ash
Adding slunk after entry, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch are processed the main immersion that obtains in 1.1 outside rotary drum is coated with ash and processes 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
Contain power LR, liming enzyme, sodium sulphite and auxiliary liming agent and in rotary drum, the slunk that is coated with after ash is processed that obtains in 1.2 is carried out liming processing 20h but add entry, Diversity alkali, but wherein the mass ratio of water, Sheng Li LR, 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 in rotary drum, the liming that obtains in 1.3 being processed 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%, after rotating 0.6h, continue to repeat this step 2 time, the final total amount that adds ammonium sulfate is the 1.2t% of slunk quality, the total amount that adds deliming agent is the 1.2t% of slunk quality, and the treatment time is total up to 2.5h.
1.5 softening
The slunk that adds after entry and macerating enzyme are processed the deliming that obtains in 1.4 in rotary drum soften processing 15min, and wherein the mass ratio of water, macerating enzyme and slunk is 200:0.4:100.
1.6 pickling
Add entry, sodium-chlor, SELLATAN PA, formic acid and sulfuric acid and in rotary drum the slunk after the softening processing that obtains in 1.5 is carried out 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
After adding slunk after entry, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed the pickling that obtains in 1.6 carry out tanning and process 12h in rotary drum, 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 obtaining processing in 1.7 is carried out 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 immersion
Add entry, Prospread Gc and sterilant and in rotary drum slunk is led immersion processing 24h, wherein the mass ratio of water, Prospread Gc, sterilant and slunk is 120:0.22:0.2:100.
2.2 be coated with ash
Adding slunk after entry, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch are processed the main immersion that obtains in 2.1 outside rotary drum is coated with ash and processes 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
Contain power LR, liming enzyme, sodium sulphite and auxiliary liming agent and in rotary drum, the slunk that is coated with after ash is processed that obtains in 2.2 is carried out liming processing 20h but add entry, Diversity alkali, but wherein the mass ratio of water, Sheng Li LR, liming enzyme, sodium sulphite, auxiliary liming agent and slunk is 200:1.2:0.1:0.5:1.6:100.
2.4 deliming
Adding slunk after entry, ammonium sulfate and deliming agent are processed the liming that obtains in 2.3 in rotary drum carries out deliming and processes 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%, after rotating 0.6h, continue to repeat this step 2 time, the final total amount that adds ammonium sulfate is slunk quality 1.2%, the total amount that adds deliming agent is slunk quality 1.2%, and the treatment time is total up to 2.5h.
2.5 softening
The slunk that adds after entry and macerating enzyme are processed the deliming that obtains in 2.4 in rotary drum soften processing 15min, and wherein the mass ratio of water, macerating enzyme and slunk is 200:0.4:100.
2.6 pickling
Add entry, sodium-chlor, SELLATAN PA, formic acid and sulfuric acid and in rotary drum the slunk after the softening processing that obtains in 2.5 is carried out 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
After adding slunk after entry, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed the pickling that obtains in 2.6 carry out tanning and process 12h in rotary drum, 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 immersion
Add entry, Prospread Gc and sterilant and in rotary drum slunk is led immersion processing 24h, wherein the mass ratio of water, Prospread Gc, sterilant and slunk is 115:0.22:0.2:100.
3.2 be coated with ash
Adding slunk after entry, sodium sulphite, Sodium sulfhydrate, auxiliary liming agent and starch are processed the main immersion that obtains in 3.1 outside rotary drum is coated with ash and processes 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
Contain power LR, liming enzyme, sodium sulphite and auxiliary liming agent and in rotary drum, the slunk that is coated with after ash is processed that obtains in 3.2 is carried out liming processing 20h but add entry, Diversity alkali, but wherein the mass ratio of water, Sheng Li LR, liming enzyme, sodium sulphite, auxiliary liming agent and slunk is 200:1.2:0.1:0.5:1.6:100.
3.4 deliming
Adding slunk after entry, ammonium sulfate and deliming agent are processed the liming that obtains in 3.3 in rotary drum carries out deliming and processes 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%, after rotating 0.6h, continue to repeat this step 2 time, the final total amount that adds ammonium sulfate is 1.2% of slunk quality, the total amount that adds deliming agent is 1.2% of slunk quality, and the treatment time is total up to 2.5h.
3.5 softening
The slunk that adds after entry and macerating enzyme are processed the deliming that obtains in 3.4 in rotary drum soften processing 15min, and wherein the mass ratio of water, macerating enzyme and slunk is 220:0.5:100.
3.6 pickling
Add entry, sodium-chlor, SELLATAN PA, formic acid and sulfuric acid and in rotary drum the slunk after the softening processing that obtains in 3.5 is carried out 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
After adding slunk after entry, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed the pickling that obtains in 3.6 carry out tanning and process 12h in rotary drum, 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 only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle 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. the treatment process of a slunk is characterized in that, slunk is passed through following steps successively: A) main immersion;
B) be coated with ash: add the slunk that is coated with after lixivium is processed main immersion and be coated with grey the processing; The described lixivium that is coated with 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 the slunk that is coated with after ash is processed is carried out the liming processing; 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; But the Sheng power LR that described Diversity alkali is Zhejiang Shenghui Chemical Industry Co., Ltd;
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 entry, Soaking and sterilant slunk is led the immersion processing, 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 for thinking to rise the Prospread Gc of trading company available from Haining one hundred.
3. treatment process according to claim 1 is characterized in that, described deliming is specially:
The slunk that adds after entry, ammonium sulfate and deliming agent are processed liming carries out the deliming processing, and 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:
The slunk that adds after entry and macerating enzyme are processed deliming softens processing, and 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:
Add entry, sodium-chlor, poly-basic organic acid, formic acid and sulfuric acid the slunk that softens after processing is carried out the 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:
The slunk that adds after entry, chromium powder, sodium bicarbonate, sodium formiate and mould inhibitor are processed pickling carries out the tanning processing, and 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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| 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 |
| 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 |
| CN110669878A (en) * | 2019-10-26 | 2020-01-10 | 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 |
| CN113718066A (en) * | 2020-12-25 | 2021-11-30 | 宁夏金海皮业有限责任公司 | Production process for producing horse gear leather |
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| CN110669878A (en) * | 2019-10-26 | 2020-01-10 | 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 |
| 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 |
| CN113718066A (en) * | 2020-12-25 | 2021-11-30 | 宁夏金海皮业有限责任公司 | Production process for producing horse gear leather |
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Effective date of registration: 20230825 Address after: No. 5, Mengzhou Industrial Cluster District, Jiaozuo City, Henan Province, 454750 Patentee after: Longfeng Gelemei Fashion Co.,Ltd. Address before: No. 5, West Industrial Zone, Mengzhou City, Jiaozuo City, Henan Province Patentee before: HENAN PROSPER SKINS & LEATHER ENTERPRISE Co.,Ltd. |
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