CN103820585A - Preparation method for environment-friendly polished waxed natural dry-milled instep leather - Google Patents
Preparation method for environment-friendly polished waxed natural dry-milled instep leather Download PDFInfo
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- CN103820585A CN103820585A CN201410067594.8A CN201410067594A CN103820585A CN 103820585 A CN103820585 A CN 103820585A CN 201410067594 A CN201410067594 A CN 201410067594A CN 103820585 A CN103820585 A CN 103820585A
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Abstract
The invention relates to the field of preparation technology for leather and provides a water-saving, low-cost and small-pollution preparation method for natural dry-milled instep leather prepared through preparation of fur, tanning, retanning and dyeing, drying and finishing. The preparation method comprises the following process steps: (1) preparation before tanning; (2) chrome tanning; (3) chrome-free retanning and dyeing; (4) drying; and (5) finishing. Process route of finishing blank leather having been dried in the step (4) successively comprises bottom-layer cation finishing, polishing, tumbling, medium-layer anion finishing, top-layer finishing, tumbling, milling, hand-feeling-layer finishing and tumbling.
Description
Technical field
The present invention relates to the preparing technical field of leather, relate in particular to a kind of environment-friendly type polishing waxing nature and fall the preparation method of line upper leather.
Background technology
Along with the raising of consumption idea, human consumer also develops into and emphasizes original, simple and unsophisticated, natural dab dressing leather from original rebuilding face, recoat decorations, covering disability the requirement of leather, naturally fall grain leather and remove from office with its natural outward appearance, good feel, is more and more subject to human consumer's favor.Polishing waxing is fallen line upper leather and is belonged to nature and fall the higher leather kind of grain leather series class, and soft, decorative pattern is plentiful, and added value of product is high.Line upper leather complex manufacturing is fallen in conventional polishing waxing, high to the requirement of raw material skin, also can be to environment.
Summary of the invention
Therefore, for above content, the invention provides a kind of water saving, cost low, pollute the little line upper leather that naturally falls and dye dry and cover with paint, lacquer, colour wash, etc. the preparation method who arranges from fur preparation, tanning, retanning.
For achieving the above object, the present invention is achieved by the following technical solutions: a kind of environment-friendly type polishing waxing nature falls the preparation method of line upper leather, comprises following processing step:
(1) tan before prepare:
(2) chrome tanning: obtain wet blue leather after step (1) is processed, by the wet blue leather making, carry out conventional water squeezing, stretching, extension, shaving processing, and weigh; Shaving gauge control is at 1.35～1.40mm;
(3) Chrome-free retanning dyeing: the scytoblastema of processing through step (2) is put into rotary drum and carry out retanning dyeing processing, the processing step that retanning dyeing is processed is followed successively by: rinsing, neutralization, retanning, filling, dyeing, stuffing;
(4) dry arrangement: will be dried arrangement by following operational path through step (3) scytoblastema after treatment; Operational path is: the soft → toggling of toggling → rewetting → fall is stretched → wets in water squeezing, and the toggling of described toggling treatment process stretches tight apart from being 5～10cm;
(5) cover with paint, lacquer, colour wash, etc. and process: will cover with paint, lacquer, colour wash, etc. processing by following operational path through step (4) scytoblastema after treatment: the soft → hand touch layer covering with paint → tumbling of bottom Cationic Finish → polishing → tumbling → middle level negatively charged ion covering with paint → top finishing → tumbling → fall.
Further improve and be: described step (1) is prepared before tanning by following operational path, its operational path is, batching → pre-immersion → except meat → main immersion → liming depilation → sheet graywall → deliming → softening → pickling, wherein, in liming epilation step, be added with 1.3～1.5% the Na that cladding is heavy
2s, 0.5～1.5%NaHS and the heavy 3.0～5.0%Ca (OH) of cladding that cladding is heavy
2consumption.
Further improve and be: the waste liquid that described step (2) chrome tanning treatment process obtains recycles.
Further improve and be: the concrete technology of described step (3) Chrome-free retanning dyeing is: rinsing, neutralization, retanning, filling, dyeing, stuffing are added with the retanning agent of cladding weight 20-30% and the fatting agent of cladding weight 15-20% in retanning process.
Further improve and be: fall supple-settlement technique and divide initial stage and final treatment techniques, the treatment time at initial stage is 20～20.5h, and temperature is controlled at 45～48 ℃, and humidity is controlled at 60～80%; Falling the soft post-processed time is 9.5～10 h, and temperature is controlled at 48～50 ℃, and humidity is controlled at 50～60%; Fall the front 2h of soft junction bundle, beginning exhausting is cooling, temperature≤40 ℃, humidity≤60%.
Further improve and be: the bottom cationic coating agent in described step (5) is made up of the raw material of following weight part: 100 parts, water, 30～60 parts, cation oil wax, 30 parts of cationic polyurethane resins, 10 parts of synthesis resins, 5～20 parts of auxiliary agent and fillers, pigment paste and dyestuff are appropriate; Middle level negatively charged ion finishing agent is made up of the raw material of following weight part: 100 parts, water, and 30 parts, negatively charged ion oil wax, 80 parts of anionic polyurethane resins, 50 parts of anionic acrylic resins, 30 parts of auxiliary agent and fillers, pigment paste and dyestuff are appropriate; Top finishing agent is made up of the raw material of following weight part: 100 parts, water, 100 parts of aqueous nitrocellulose light, 10～15 parts of hand feeling agents, 5～10 parts of auxiliary agents; Hand touch layer finishing agent is made up of the raw material of following weight part: 100 parts, water, 10～15 parts of hand feeling agents, 5～10 parts of auxiliary agents.
Further improve and be: in described step (5), bottom Cationic Finish amount is about 10～15g/ square feet, and middle level negatively charged ion covering with paint amount is about 5g/ square feet, and top finishing amount is about 3g/ square feet, and hand touch layer covering with paint amount is about 3g/ square feet.
By adopting aforementioned techniques scheme, the invention has the beneficial effects as follows: the leather that adopts preparation method of the present invention to make, the smooth thickness of leather body is even, grain decorative pattern is clear, good hand feeling, carry out physicals detection by QT/B 1873-2010, thickness is 1.35mm, and heat shrink temperature is 99 ℃, and tear edge reaches 118～126N, elongation is 24～25%, the height 9mm that bursts apart, collapses broken intensity 371～387N/mm, does, wet friction colour fastness is 4-5 level, coating folding fastness is 50000 flawlesses, and all indexs all meet the requirements.
Further, in the present invention: (1) prepares before tanning and chrome tanning critical process recycles as waste leather-making liquids such as liming, pickling, chrome tannings, preimpregnation aqueous waste solution process after for main immersion processing, approximately 15 tons of common process fur process hides per ton preparation workshop section and tanning process waters, and using the technology of the present invention only to need 6 tons, water saving is more than 60%; (2), because the waste leather-making liquids such as the technology of the present invention liming, pickling, chrome tanning recycle, can effectively save the usage quantity of sulfide, lime, sulfuric acid, chromium powder etc.; (3) because the technology of the present invention covering with paint is frivolous, covering with paint amount is only 20～25g/ square feet, compares with routine covering with paint amount 40-50g/ square feet, and the usage quantity of coating and decorating material approximately reduces by 50%; (4) because the technology of the present invention adopts wet toggling technology, and suitably control and fall soft degree, can make yield of leather improve more than 5%.Not only can naturally fall line upper leather by the well behaved ox of process for processing by the technology of the present invention, but also there is the features such as water saving, joint material, environmental protection, can effectively reduce pollutent and discharge of wastewater, save production cost, increase economic benefit.
Embodiment
Describe embodiments of the present invention in detail below with reference to specific embodiment, to the present invention, how utilisation technology means solve technical problem whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.
If do not specialize, the conventional means that the technique means adopting in embodiment is well known to those skilled in the art, the reagent adopting and product are also and can business obtain.Source, the trade(brand)name of agents useful for same and be necessary to list its moiety person all indicated in the time occurring first.
Embodiment mono-
Environment-friendly type polishing waxing nature falls a preparation method for line upper leather, comprises following processing step:
(1) tan before prepare: before tanning prepare undertaken by following operational path, operational path: batching → pre-immersion → except meat → main immersion → liming depilation → sheet graywall → deliming → softening → pickling, wherein batching, immersion, except meat, sheet graywall all routinely technique carry out, technique is soaked routinely, by preimpregnation aqueous waste solution process after for main immersion;
A. liming depilation: (consumption is all calculated with the per-cent of the weight of scytoblastema), water 100%(temperature: 22 ℃), Trupowet MS 0.1%, B
120.8%, W-100 0.1%, NaHS 0.15%, KF-50 0.2%, turns 30min; Lime 1.2%, turns 30min; NaHS 1.3%, turns 20min; The about 60min of filter hair, adds DESOAGEN POU 0.3%, lime 1.0%, Na2S 0.75%, turn 10min, stop 20min, turn and stop interval operation 3h, moisturizing 30%, then add DESOAGEN POU 0.3%, lime 1.0%, Na2S 0.75%, turns 10min, stops 20min, turn and stop interval operation 2h, then moisturizing 30%, add lime 1.5%, B12 0.3%, DG 0.1%, turns 10min; Moisturizing 50%, Na
2s 0.2%, turns 10min, stops 50min, turns and stops interval operation 12h, and Lime Liquor treatment agent is ELIPO-L, and Lime Liquor recycles, and consumption is about 0.03%;
B. deliming: first with the vexed 10min that washes of water of 200% 32 ℃; Add DESOAGEN TM 0.2%, water 150%(temperature: 32 ℃), turn 30min; Add again DESOAGEN TM 1.3%, water 100%(temperature: 32 ℃), turn 90min; Then add U5 0.3%, DG 0.1%, turns 80min, surveys pH value 8.8 left and right; It is clear to water that flowing water is washed 30min;
C. pickling: water 50%, temperature remains on 18～20 ℃, adds NaCl 3%, turns 10min; Add formic acid 0.5%, KF-50 0.3%, turns 20min; Add sulfuric acid (pickling waste liquid after treatment) 1.4%, turn 20min, stop 40min, turn and stop interval operation 3h; Pickling waste liquid adds manipulation of regeneration agent ELIPO-D, and consumption is about 0.03%, can be recycled after treatment.
(2) chrome tanning: the wet blue leather that step (1) is made, carries out conventional water squeezing, stretching, extension, shaving processing, and weighs; Shaving gauge control is in 1.35mm left and right; Chrome tanning process is: first add Feliderm CS 1.0%, chromium powder 3.25%, turns 60min; Add DUENZOL SR-228 0.2%, chromium powder 2.25%, sodium formiate 0.5%, turns 120min; Mend 35 ℃ of water 30%, add sodium bicarbonate 0.3%, turn 5h; Add and process rear useless chrome liquor 100%, reaction 3h, detects pH and is about 3.3, temperature 40-42 ℃, 95 ℃ of heat shrink temperature >; The manipulation of regeneration agent of chroming waste liquor interpolation 0.03% is to drop into and recycle after ELIPO-D.
(3) Chrome-free retanning dyeing: by the scytoblastema through step (2) processing routinely technique carry out water squeezing stretching, extension, and shaving, then put into rotary drum and carry out retanning dyeing processing, the processing step that retanning dyeing is processed is followed successively by: rinsing, neutralization, retanning, filling, dyeing, stuffing;
A. rinsing: technique routinely;
B. neutralization, stuffing: water 150%(temperature: 30 ℃), in adding and tannin KF50 1%, NBP 2%, BOV 1%, sodium formiate 2%, turns 20min; Add sodium bicarbonate 2%, controlling pH is 6.9;
C. retanning, filling, dyeing, stuffing: add SF 1%, Eulinol TMS 1%, SR228 1%, rotates 20min; Then add fatting agent WP90 1.5%, MIR90 1.5%, WFL 1.5%, turns 2h, stops drum and spends the night; Change water 100%(temperature: 30 ℃), add retanning agent 1,084 1%, F30 1%, E-33 2%, SUB 2%, turns 20min; Add LTP 1.5%, WHG 1.5%, R6707 1.5%, R89 1.5%, MIR90 1% BTB 0.1%, turns 20min; Then add P-MF 2%, WF858 2%, ATO 2.5%, FS 2.5%, GA 2%, CC 2%, E-33 3%, turns 60min; Then add dyestuff 2.0%, turn 60min, mend 55 ℃ of water 100%, turn 20min; Divide and add formic acid 3-5 time, turn respectively 10min, in the time that pH is about 3.6, with 50 ℃ of vexed washing of water.Finally add 50 ℃ of water 200%, dyestuff 1%, rotates 15min; Add with cold water-reducible formic acid 0.5%, rotate 10min, add cationic fat liquor GS 1%, turn 10min, after cleaning by normal-temperature water, go out drum.
(4) dry arrangement: will be dried by following operational path arrangements through step (3) scytoblastema after treatment, operational path is: toggling → rewetting → fall soft → toggling is stretched → wets in water squeezing, the toggling that wherein the wets distance that stretches tight is 7-8cm; Fall the soft initial stage that (front 22 h), 48 ℃ of temperature, humidity 80%; Fall the soft later stage that (rear 10 h), temperature 50 C, humidity 60%; Fall the front 2h of soft junction bundle, beginning exhausting is cooling, 40 ℃ of temperature, humidity 60%.
(5) cover with paint, lacquer, colour wash, etc. and process: will cover with paint, lacquer, colour wash, etc. processing by following operational path through step (4) scytoblastema after treatment: bottom Cationic Finish → polishing → tumbling → middle level negatively charged ion covering with paint → top finishing → tumbling → fall soft → hand touch layer covering with paint → tumbling, total covering with paint amount is 25g/ square feet.
Wherein bottom cationic coating agent is made up of the raw material of following weight part: 100 parts, water, 60 parts, cation oil wax, 30 parts of cationic polyurethane resins, 10 parts of synthesis resins, 15 parts of auxiliary agent and fillers, pigment paste and dyestuff are appropriate, and Cationic Finish amount is about 14g/ square feet; Middle level negatively charged ion finishing agent is made up of the raw material of following weight part: 100 parts, water, 30 parts, negatively charged ion oil wax, 80 parts of anionic polyurethane resins, 50 parts of anionic acrylic resins, 30 parts of auxiliary agent and fillers, pigment paste and dyestuff are appropriate, and covering with paint amount is about 5g/ square feet; Top finishing agent is made up of the raw material of following weight part: 100 parts, water, and 100 parts of aqueous nitrocellulose light, 10 parts of hand feeling agents, 10 parts of auxiliary agents, covering with paint amount is about 3g/ square feet; Hand touch layer finishing agent is made up of the raw material of following weight part: 100 parts, water, and 10 parts of hand feeling agents, 5 parts of auxiliary agents, covering with paint amount is about 3g/ square feet.
The ox of the present embodiment process for processing falls grain leather naturally, and the smooth thickness of leather body is even, and grain decorative pattern is clear, good hand feeling, carries out physicals detection by QT/B 1873-2010, and thickness is 1.35mm, heat shrink temperature is 99 ℃, tear edge is 126N, and elongation is 24%, and height 9mm bursts apart, collapse brokenly intensity 387N/mm, dry, wet friction colour fastness is 4-5 level, and coating folding fastness is 50000 flawlesses, and all indexs all meet the requirements.
Embodiment bis-
Environment-friendly type polishing waxing nature falls a preparation method for line upper leather, comprises following processing step:
(1) tan before prepare: before tanning prepare tan by following operational path before prepare;
Operational path: batching → pre-immersion → except meat → main immersion → liming depilation → sheet graywall → deliming → softening → pickling → chrome tanning, wherein batching, immersion, except meat, sheet graywall all routinely technique carry out, technique is soaked routinely, by preimpregnation aqueous waste solution process after for main immersion;
A. liming depilation: water 100%(temperature: 22 ℃), Trupowet MS 0.1%, B12 0.8%, W-100 0.1%, NaHS 0.15%, KF-50 0.2%, turns 30min; Lime 1.2%, turns 30min; NaHS 1.3%, turns 20min; The about 60min of filter hair; Add DESOAGEN POU 0.3%, lime 1.0%, Na2S 0.75%, turns 10min, stops 20min, turns and stops interval operation 3h; Moisturizing 30%, then add DESOAGEN POU 0.3%, lime 1.0%, Na2S 0.75%, turns 10min, stops 20min, turns and stops interval operation 2h; Moisturizing 30% again, adds lime 1.5%, B12 0.3%, and DG 0.1%, turns 10min; Moisturizing 50%, Na2S 0.2%, turns 10min, stops 50min, turns and stops interval operation 12h.Lime Liquor treatment agent is ELIPO-L, and Lime Liquor recycles, and consumption is about 0.02%;
B. deliming: first with the vexed 10min that washes of water of 200% 31 ℃; Add DESOAGEN TM 0.2%, water 150%(temperature: 31 ℃), turn 30min; Add again DESOAGEN TM 1.3%, water 100%(temperature: 31 ℃), turn 90min; Then add Oropon OR 0.3%, DG 0.1%, turns 80min, surveys pH value 8.8 left and right; It is clear to water that flowing water is washed 30min;
C. pickling: water 50%, temperature remains on 18-20 ℃, adds NaCl 3%, turns 10min; Add formic acid 0.5%, KF-50 0.3%, turns 20min; Add sulfuric acid (pickling waste liquid after treatment) 1.4%, turn 20min, stop 40min, turn and stop interval operation 3h, pickling waste liquid recycles, and pickling spent solution regeneration treatment agent is ELIPO-D, and consumption is about 0.02%.
(2) chrome tanning: the wet blue leather that step (1) is made, carries out conventional water squeezing, stretching, extension, shaving processing, and weighs; Shaving gauge control is in 1.35mm left and right; Chrome tanning process is: first add Feliderm CS 1.0%, chromium powder 3.25%, turns 60min; Add DUENZOL SR-228 0.2%, chromium powder 2.25%, sodium formiate 0.5%, turns 120min; Mend 35 ℃ of water 30%, add sodium bicarbonate 0.3%, turn 5h; Add and process rear useless chrome liquor 100%, reaction 3h.Detect pH and be about 3.3, temperature 40-42 ℃, 95 ℃ of heat shrink temperature >.Chroming waste liquor recycles, and the agent of chroming waste liquor manipulation of regeneration is ELIPO-D, and consumption is about 0.02%.
(3) Chrome-free retanning dyeing: by the scytoblastema through step (2) processing routinely technique carry out water squeezing stretching, extension, and shaving, then put into rotary drum and carry out retanning dyeing processing, the processing step that retanning dyeing is processed is followed successively by: rinsing, neutralization, retanning, filling, dyeing, stuffing;
A. rinsing: technique routinely;
B. neutralization, stuffing: water 150%(temperature: 30 ℃), in adding and tannin KF50 1%, NBP 2%, BOV 1%, sodium formiate 2%, turns 20min; Add sodium bicarbonate 2%, controlling pH is 6.8;
C. retanning, filling, dyeing, stuffing: add SF 1%, Eulinol TMS 1%, SR228 1%, rotates 20min; Then add fatting agent WP90 1.5%, MIR90 1.5%, WFL 1.5%, turns 2h, stops drum and spends the night; Change water 100%(temperature: 30 ℃), add retanning agent 1,084 1%, F30 1%, E-33 2%, SUB 2%, turns 20min; Add LTP 1.5%, WHG 1.5%, R6707 1.5%, R89 1.5%, MIR90 1% BTB 0.1%, turns 20min; Then add P-MF 2%, WF858 2%, ATO 2.5%, FS 2.5%, GA 2%, CC 2%, E-33 3%, turns 60min; Then add dyestuff 2.0%, turn 60min, mend 55 ℃ of water 100%, turn 20min; Divide and add formic acid 3-5 time, turn respectively 10min, in the time that pH is about 3.6, with 50 ℃ of vexed washing of water.Finally add 50 ℃ of water 200%, dyestuff 1%, rotates 15min; Add with cold water-reducible formic acid 0.5%, rotate 10min, add cationic fat liquor GS 1%, turn 10min, after cleaning by normal-temperature water, go out drum.
(4) dry arrangement: will be dried arrangement by following operational path through step (3) scytoblastema after treatment.Operational path is: the soft → toggling of toggling → rewetting → fall is stretched → wets in water squeezing, and wherein wet toggling stretches tight apart from being 7-8cm; Fall the soft initial stage that (18 h), temperature 50 C, humidity 60%; Fall the soft later stage that (12 h), 48 ℃ of temperature, humidity 55%; Fall the front 2h of soft junction bundle, beginning exhausting is cooling, 35 ℃ of temperature, humidity 55%.
(5) cover with paint, lacquer, colour wash, etc. and process: will cover with paint, lacquer, colour wash, etc. processing by following operational path through step (4) scytoblastema after treatment: bottom Cationic Finish → polishing → tumbling → middle level negatively charged ion covering with paint → top finishing → tumbling → fall soft → hand touch layer covering with paint → tumbling, total covering with paint amount is 20g/ square feet.
Wherein bottom cationic coating agent is made up of the raw material of following weight part: 100 parts, water, 40 parts, cation oil wax, 30 parts of cationic polyurethane resins, 10 parts of synthesis resins, 15 parts of auxiliary agent and fillers, pigment paste and dyestuff are appropriate, and Cationic Finish amount is about 10g/ square feet; Middle level negatively charged ion finishing agent is made up of the raw material of following weight part: 100 parts, water, 30 parts, negatively charged ion oil wax, 80 parts of anionic polyurethane resins, 50 parts of anionic acrylic resins, 30 parts of auxiliary agent and fillers, pigment paste and dyestuff are appropriate, and covering with paint amount is about 5g/ square feet; Top finishing agent is made up of the raw material of following weight part: 100 parts, water, and 100 parts of aqueous nitrocellulose light, 12 parts of hand feeling agents, 7 parts of auxiliary agents, covering with paint amount is about 3g/ square feet; Hand touch layer finishing agent is made up of the raw material of following weight part: 100 parts, water, and 12 parts of hand feeling agents, 8 parts of auxiliary agents, covering with paint amount is about 2g/ square feet.
The ox of the present embodiment process for processing falls grain leather naturally, and the smooth thickness of leather body is even, and grain decorative pattern is clear, good hand feeling, carries out physicals detection by QT/B 1873-2010, and thickness is 1.35mm, heat shrink temperature is 99 ℃, tear edge is 118N, and elongation is 25%, and height 9mm bursts apart, collapse brokenly intensity 371N/mm, dry, wet friction colour fastness is 4-5 level, and coating folding fastness is 50000 flawlesses, and all indexs all meet the requirements.
The leather that adopts preparation method of the present invention to make, the smooth thickness of leather body is even, and grain decorative pattern is clear, good hand feeling, carries out physicals detection by QT/B 1873-2010, and thickness is 1.35mm, heat shrink temperature is 99 ℃, tear edge reaches 118～126N, and elongation is 24～25%, and height 9mm bursts apart, collapse brokenly intensity 371～387N/mm, dry, wet friction colour fastness is 4-5 level, and coating folding fastness is 50000 flawlesses, and all indexs all meet the requirements.
Further, in the present invention: (1) prepares before tanning and chrome tanning critical process recycles as waste leather-making liquids such as liming, pickling, chrome tannings, preimpregnation aqueous waste solution process after for main immersion processing, approximately 15 tons of common process fur process hides per ton preparation workshop section and tanning process waters, and using the technology of the present invention only to need 6 tons, water saving is more than 60%; (2), because the waste leather-making liquids such as the technology of the present invention liming, pickling, chrome tanning recycle, can effectively save the usage quantity of sulfide, lime, sulfuric acid, chromium powder etc.; (3) because the technology of the present invention covering with paint is frivolous, covering with paint amount is only 20～25g/ square feet, compares with routine covering with paint amount 40-50g/ square feet, and the usage quantity of coating and decorating material approximately reduces by 50%; (4) because the technology of the present invention adopts wet toggling technology, and suitably control and fall soft degree, can make yield of leather improve more than 5%.Not only can naturally fall line upper leather by the well behaved ox of process for processing by the technology of the present invention, but also there is the features such as water saving, joint material, environmental protection, can effectively reduce pollutent and discharge of wastewater, save production cost, increase economic benefit.
Above record, only, for utilizing the embodiment of this origination techniques content, modification, variation that any those skilled in the art use this creation to do, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.
Claims (7)
1. environment-friendly type polishing waxing nature falls a preparation method for line upper leather, it is characterized in that, comprises following processing step:
(1) tan before prepare:
(2) chrome tanning: obtain wet blue leather after step (1) is processed, by the wet blue leather making, carry out conventional water squeezing, stretching, extension, shaving processing, and weigh; Shaving gauge control is at 1.35～1.40mm;
(3) Chrome-free retanning dyeing: the scytoblastema of processing through step (2) is put into rotary drum and carry out retanning dyeing processing, the processing step that retanning dyeing is processed is followed successively by: rinsing, neutralization, retanning, filling, dyeing, stuffing;
(4) dry arrangement: will be dried arrangement by following operational path through step (3) scytoblastema after treatment; Operational path is: the soft → toggling of toggling → rewetting → fall is stretched → wets in water squeezing, and the toggling of described toggling treatment process stretches tight apart from being 5-10cm;
(5) cover with paint, lacquer, colour wash, etc. and process: will cover with paint, lacquer, colour wash, etc. processing by following operational path through step (4) scytoblastema after treatment: the soft → hand touch layer covering with paint → tumbling of bottom Cationic Finish → polishing → tumbling → middle level negatively charged ion covering with paint → top finishing → tumbling → fall.
2. the preparation method of line upper leather is fallen in polishing waxing claimed in claim 1, it is characterized in that: described step (1) is prepared before tanning by following operational path, its operational path is, batching → pre-immersion → except meat → main immersion → liming depilation → sheet graywall → deliming → softening → pickling, wherein, in liming epilation step, be added with 1.3～1.5% heavy 0.5～1.5%NaHS and heavy 3.0～5.0%Ca (OH), 2 consumptions of cladding of Na2S, cladding that cladding is heavy.
3. the preparation method of line upper leather is fallen in polishing waxing claimed in claim 1, it is characterized in that; The waste liquid that described step (2) chrome tanning treatment process obtains recycles.
4. the preparation method of line upper leather is fallen in polishing waxing claimed in claim 1, it is characterized in that: the concrete technology of described step (3) Chrome-free retanning dyeing is: rinsing, neutralization, retanning, filling, dyeing, stuffing are added with the retanning agent of cladding weight 20-30% and the fatting agent of cladding weight 15-20% in retanning process.
5. the preparation method of line upper leather is fallen in polishing waxing claimed in claim 1, it is characterized in that: fall supple-settlement technique and divide initial stage and final treatment techniques, the treatment time at initial stage is 20～20.5h, and temperature is controlled at 45～48 ℃, and humidity is controlled at 60～80%; Falling the soft post-processed time is 9.5～10 h, and temperature is controlled at 48～50 ℃, and humidity is controlled at 50～60%; Fall the front 2h of soft junction bundle, beginning exhausting is cooling, temperature≤40 ℃, humidity≤60%.
6. the preparation method of line upper leather is fallen in the waxing of the polishing described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that: the bottom cationic coating agent in described step (5) is made up of the raw material of following weight part: 100 parts, water, 30～60 parts, cation oil wax, 30 parts of cationic polyurethane resins, 10 parts of synthesis resins, 5～20 parts of auxiliary agent and fillers, pigment paste and dyestuff are appropriate; Middle level negatively charged ion finishing agent is made up of the raw material of following weight part: 100 parts, water, and 30 parts, negatively charged ion oil wax, 80 parts of anionic polyurethane resins, 50 parts of anionic acrylic resins, 30 parts of auxiliary agent and fillers, pigment paste and dyestuff are appropriate; Top finishing agent is made up of the raw material of following weight part: 100 parts, water, 100 parts of aqueous nitrocellulose light, 10～15 parts of hand feeling agents, 5～10 parts of auxiliary agents; Hand touch layer finishing agent is made up of the raw material of following weight part: 100 parts, water, 10～15 parts of hand feeling agents, 5～10 parts of auxiliary agents.
7. the preparation method of line upper leather is fallen in polishing waxing claimed in claim 6, it is characterized in that: in described step (5), bottom Cationic Finish amount is about 10～15g/ square feet, middle level negatively charged ion covering with paint amount is about 5g/ square feet, top finishing amount is about 3g/ square feet, and hand touch layer covering with paint amount is about 3g/ square feet.
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| CN103820585B CN103820585B (en) | 2016-01-06 |
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Cited By (3)
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| CN104593529A (en) * | 2014-12-30 | 2015-05-06 | 兴业皮革科技股份有限公司 | Non-volatile low-pollution full-waterborne genuine leather finishing process |
| CN104988248A (en) * | 2015-07-30 | 2015-10-21 | 兴业皮革科技股份有限公司 | Making technology of natural dry milled leather |
| CN108315511A (en) * | 2018-04-17 | 2018-07-24 | 焦作隆丰皮草企业有限公司 | A kind of finishing agent, comprehensive Coating technology and wet blue treatment process for abortive calfskin |
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| JP2013040259A (en) * | 2011-08-12 | 2013-02-28 | Midori Hokuyo Kk | Urethane beads topcoat |
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| CN104593529A (en) * | 2014-12-30 | 2015-05-06 | 兴业皮革科技股份有限公司 | Non-volatile low-pollution full-waterborne genuine leather finishing process |
| CN104988248A (en) * | 2015-07-30 | 2015-10-21 | 兴业皮革科技股份有限公司 | Making technology of natural dry milled leather |
| CN108315511A (en) * | 2018-04-17 | 2018-07-24 | 焦作隆丰皮草企业有限公司 | A kind of finishing agent, comprehensive Coating technology and wet blue treatment process for abortive calfskin |
| CN108315511B (en) * | 2018-04-17 | 2020-10-09 | 焦作隆丰皮草企业有限公司 | Coating agent for fetal calf, comprehensive coating process and blue wet skin treatment process |
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