CN105200170A - Production method of solvent resistant leather - Google Patents
Production method of solvent resistant leather Download PDFInfo
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- CN105200170A CN105200170A CN201510723861.7A CN201510723861A CN105200170A CN 105200170 A CN105200170 A CN 105200170A CN 201510723861 A CN201510723861 A CN 201510723861A CN 105200170 A CN105200170 A CN 105200170A
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Abstract
The invention relates to a production method of solvent resistant leather and belongs to the technical field of leather. The production method of the solvent resistant leather comprises steps as follows: a leather crust is prepared and processed sequentially according to steps as follows: softening through vibration, toggling, filling, vacuum pumping, mending, leather buffing, soot blowing, spraying of an adhesive agent, primary roll coating, primary plate pressing, secondary roll coating, secondary plate pressing, spraying, primary spraying of polyurethane gloss oil, tertiary plate pressing, secondary spraying of the polyurethane gloss oil, roll finish and spraying of a feeling agent. The leather produced with the method not only has excellent solvent resistance, but also has good aging resistance.
Description
Technical field
The invention belongs to leather technology field, be specifically related to a kind of production method of solvent resistant leather.
Background technology
Leather, generally refers to through tanning, taw or obtain have ventilation property and flexible animal skin with additive method preparation, also refers to the artificial leather leather through synthetic at present.
In recent years, the usage quantity of leather rises year by year, be widely used in footwear, clothing, bag and various daily necessities on, therefore the performance requriements of leather is also improved gradually, not only to have good feel, also to have good Bearable dry and wet wipe performance, ageing-resistant performance and solvent resistance etc., although along with the development of leather processing technique, the performance of leather is greatly improved, but solvent resistance and the ageing resistance of current existing leather are very poor, and generally traditional treatment process is decorated with reaches ageing-resistant by carrying out painting at leather surface, the objects such as solvent resistance, but because coating method is improper, and it is poor to cover with paint, lacquer, colour wash, etc. physical performance, leather still can be caused in use to occur crackle, xanthochromia even scaling phenomenon.
Summary of the invention
The object of the invention is to solve the deficiencies in the prior art, and provide a kind of production method of solvent resistant leather, the leather produced according to the method not only has excellent solvent resistance, also has good ageing-resistant performance.
The present invention adopts following technical scheme:
The production method of solvent resistant leather, comprise the steps: to prepare scytoblastema, scytoblastema processed successively in accordance with the following steps: soft, the toggling of shaking, fill, vacuumize, mend wound, buffing, blow ash, spray solid, a roller coating, pressing plate, secondary roller coating, secondary pressure plate, spraying, spraying polyurethane gloss oil, No. three pressing plates, secondary spraying polyurethane gloss oil, tumbling, spraying hand feeling agent.
Further, the production method of described solvent resistant leather, specifically comprises the steps:
Step one, shake soft: prepare scytoblastema, scytoblastema is placed in the soft machine that shakes shakes soft;
Step 2, toggling: by shake soft after scytoblastema be placed on toggling machine and carry out toggling, toggling temperature is 55-65 DEG C, stretches tight apart from 10cm;
Step 3, fills: the scytoblastema after toggling is placed in roller coating filling liquid on coating roller, leaves standstill 20-30min;
Step 4, vacuumizes: be placed on vacuum machine by the scytoblastema after filling and vacuumize, temperature 68-71 DEG C, time 18-21min, vacuum tightness is 0.8-0.9MPa;
Step 5, mends wound: the scytoblastema after vacuumizing is carried out deburring, hinders material carry out benefit wound after deburring by benefit;
Step 6, buffing: the scytoblastema after a pressing plate is placed on buffing machine, carries out buffing with sand paper;
Step 7, blows ash: the dust blowing away the scytoblastema surface after buffing;
Step 8, spraying solid: scytoblastema is placed on spraying machine and sprays solid, toast 10-15min at 80-85 DEG C;
Step 9, a roller coating: the scytoblastema of spraying solid is placed in roller coating solid on coating roller, toasts 15-18min at 80-85 DEG C;
Step 10, a pressing plate: be placed on embossing machine by the scytoblastema after a roller coating and carry out pressing plate, during pressing plate, temperature is 78-82 DEG C, and pressure is 780-790N, and the time is 1-3s;
Step 11, secondary roller coating: the scytoblastema through pressing plate to be successively placed on coating roller roller coating solid again, to toast 12-15min at 82-86 DEG C;
Step 12, secondary pressure plate: the scytoblastema after secondary roller coating is placed on embossing machine and carries out pressure hole, temperature is 88-92 DEG C, and pressure is 1170-1180N, and the time is 1-3s;
Step 13, spraying: the scytoblastema after secondary pressure plate is placed on spraying machine and sprays, rear standing 30-40min;
Step 14, a spraying polyurethane gloss oil: scytoblastema is placed in spraying polyurethane gloss oil on spraying machine, quantity for spray is every square chi of scytoblastema spraying 9-11g polyurethane gloss oil;
Step 15, No. three pressing plates: scytoblastema is placed on embossing machine and carries out pressing plate, temperature 89-92 DEG C, pressure is 1160-1180N, and the time is 1-3s;
Step 10 six, secondary spraying polyurethane gloss oil: scytoblastema is placed in spraying polyurethane gloss oil on spraying machine, quantity for spray is every square chi of scytoblastema spraying 5-7g polyurethane gloss oil;
Step 10 seven, tumbling: scytoblastema is placed in tumbling on rolling machine, temperature 88-91 DEG C, pressure is 190-200N, after at 20-30 DEG C leave standstill 1-2h;
Step 10 eight, spraying hand feeling agent: be placed in by scytoblastema on spraying machine and spray hand feeling agent, quantity for spray is every square chi of scytoblastema spraying 5-7g hand feeling agent, leaves standstill 1-2h, obtains described solvent resistant leather.
Further, the production method of described solvent resistant leather, wherein scytoblastema described in step one is head layer ox-hide.
Further, the production method of described solvent resistant leather, wherein filling liquid described in step 3 comprises the following raw material according to mass fraction meter: water 295-305 part, penetrant m elioP-4893.B29-31 part, acrylic resin 248-252 part, aqueous epoxy resin emulsion 14-16 part.
Further, the production method of described solvent resistant leather, wherein roller coating described in step 3, each roller coating amount is every square chi of scytoblastema roller coating filling liquid 19-21g.
Further, the production method of described solvent resistant leather, wherein mends the following raw material that wound expects to comprise according to mass fraction meter: mend and hinder filler FI-78-03495-105 part, pigment 3-6 part described in step 5.
Further, the production method of described solvent resistant leather, wherein the quantity for spray of solid described in step 8 is every square chi of scytoblastema spraying 5-7g solid, and described in step 8 and step 9, solid comprises the following raw material according to mass fraction meter: water 298-302 part, ethylene glycol monobutyl ether 99-101 part, acrylic resin dispersion liquid MelioPromulAP-39.A98-102 part.
Further, the production method of described solvent resistant leather, wherein in step 11, secondary roller coating solid used comprises the following raw material according to mass fraction meter: water 40-60 part, permeate agent PT-650729-31 part, urethane resin 70-90 part, water-soluble synthesis resin RC-78-222245-255 part, water soluble acrylic resin RA-265-75 part, delustring filler 28-32 part, cationic fillers FI-128569-71 part, casein 29-31 part, non-ionic water silicon emulsion HM-77-0548-12 part, water based silicone solution MelioLV-032-4 part, secondary roller coating amount is every square chi of scytoblastema roller coating 5-7g, the solid content of wherein said water based silicone solution is 10%-12%.
Further, the production method of described solvent resistant leather, wherein in step 13, the raw materials used following raw material comprised according to mass fraction meter during spraying: water 440-460 part, permeate agent PT-650729-31 part, urethane resin 110-130 part, dissolubility synthesis resin RC-78-222145-155 part, water soluble acrylic resin RA-275-85 part, waterborne polyurethane resin RU-3901Unires28-32 part, delustring filler 28-32 part, bating oil 29-31 part, non-ionic water silicon emulsion HM-77-05429-31 part, casein 29-31 part, water based silicone solution MelioLV-032-4 part, pigment 95-105 part, quantity for spray is every square chi of scytoblastema spraying 9-11g.
The present invention compared with prior art, its beneficial effect is: the leather obtained according to the inventive method not only has excellent solvent resistance and excellent ageing-resistant performance, also there is good ultimate strength and elongation at break, effectively increase the life-span of leather, and it has good Bearable dry and wet wipe performance.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example only for illustration of the present invention, and should not be considered as limiting scope of the present invention.
embodiment 1
The production method of solvent resistant leather, specifically comprises the steps:
Step one, shake soft: prepare scytoblastema, scytoblastema is placed in the soft machine that shakes shakes soft;
Step 2, toggling: by shake soft after scytoblastema be placed on toggling machine and carry out toggling, toggling temperature is 60 DEG C, stretches tight apart from 10cm;
Step 3, fill: the scytoblastema after toggling is placed in roller coating filling liquid on coating roller, leave standstill 25min, described filling liquid comprises the following raw material according to mass fraction meter: 300 parts, water, penetrant m elioP-4893.B(Clariant Chemical Co., Ltd.) 30 parts, acrylic resin 250 parts, aqueous epoxy resin emulsion 15 parts, each roller coating amount is every square chi of scytoblastema roller coating filling liquid 20g;
Step 4, vacuumizes: be placed on vacuum machine by the scytoblastema after filling and vacuumize, temperature 70 C, time 20min, vacuum tightness is 0.8-0.9MPa;
Step 5, mend wound: the scytoblastema after vacuumizing is carried out deburring, hinder material by benefit after deburring and carry out benefit wound, mend wound described in step 5 and expect the following raw material that comprises according to mass fraction meter: mend and hinder the meticulous coating company limited of filler FI-78-034(Si tal fibre) 100 parts, pigment 5 parts;
Step 6, buffing: the scytoblastema after a pressing plate is placed on buffing machine, carries out buffing with sand paper;
Step 7, blows ash: the dust blowing away the scytoblastema surface after buffing;
Step 8, spraying solid: scytoblastema is placed on spraying machine and sprays solid, 12min is toasted at 80 DEG C, the quantity for spray of described solid is every square chi of scytoblastema spraying 6g solid, and described solid comprises the following raw material according to mass fraction meter: 300 parts, water, ethylene glycol monobutyl ether 100 parts, acrylic resin dispersion liquid MelioPromulAP-39.A(Clariant Chemical Co., Ltd.) 100 parts;
Step 9, a roller coating: the scytoblastema of spraying solid is placed in roller coating solid on coating roller, at 83 DEG C, toast 16min, described solid comprises the following raw material according to mass fraction meter: 300 parts, water, ethylene glycol monobutyl ether 100 parts, acrylic resin dispersion liquid MelioPromulAP-39.A100 part;
Step 10, a pressing plate: be placed on embossing machine by the scytoblastema after a roller coating and carry out pressing plate, during pressing plate, temperature is 80 DEG C, and pressure is 785N, and the time is 2s;
Step 11, secondary roller coating: the scytoblastema through pressing plate to be successively placed on coating roller roller coating solid again, 13min is toasted at 84 DEG C, secondary roller coating solid used comprises the following raw material according to mass fraction meter: water, 50 parts, the meticulous coating company limited of permeate agent PT-6507(Si tal fibre) 30 parts, urethane resin 80 parts, the water-soluble meticulous coating company limited of synthesis resin RC-78-222(Si tal fibre) 250 parts, the meticulous coating company limited of water soluble acrylic resin RA-2(Si tal fibre) 70 parts, delustring filler 30 parts, the meticulous coating company limited of cationic fillers FI-1285(Si tal fibre) 70 parts, casein 30 parts, the meticulous coating company limited of non-ionic water silicon emulsion HM-77-054(Si tal fibre) 10 parts, water based silicone solution MelioLV-03(Clariant Chemical Co., Ltd.) 3 parts, secondary roller coating amount is every square chi of scytoblastema roller coating 6g, the solid content of wherein said water based silicone solution is 11%,
Step 12, secondary pressure plate: the scytoblastema after secondary roller coating is placed on embossing machine and carries out pressure hole, temperature is 90 DEG C, and pressure is 1175N, and the time is 2s;
Step 13, spraying: the scytoblastema after secondary pressure plate is placed on spraying machine and sprays, rear standing 35min, the raw materials used following raw material comprised according to mass fraction meter during spraying: 450 parts, water, permeate agent PT-650730 part, urethane resin 120 parts, dissolubility synthesis resin RC-78-222150 part, water soluble acrylic resin RA-280 part, the meticulous coating company limited of waterborne polyurethane resin RU-3901Unires(Si tal fibre) 30 parts, delustring filler 30 parts, bating oil 30 parts, non-ionic water silicon emulsion HM-77-05430 part, casein 30 parts, water based silicone solution MelioLV-033 part, pigment 100 parts, quantity for spray is every square chi of scytoblastema spraying 10g,
Step 14, a spraying polyurethane gloss oil: scytoblastema is placed in spraying polyurethane gloss oil on spraying machine, quantity for spray is every square chi of scytoblastema spraying 10g polyurethane gloss oil;
Step 15, No. three pressing plates: scytoblastema is placed on embossing machine and carries out pressing plate, temperature 90 DEG C, pressure is 1170N, and the time is 2;
Step 10 six, secondary spraying polyurethane gloss oil: scytoblastema is placed in spraying polyurethane gloss oil on spraying machine, quantity for spray is every square chi of scytoblastema spraying 6g polyurethane gloss oil;
Step 10 seven, tumbling: scytoblastema is placed in tumbling on rolling machine, temperature 90 DEG C, pressure is 195N, after at 25 DEG C leave standstill 1.5h;
Step 10 eight, spraying hand feeling agent: be placed in by scytoblastema on spraying machine and spray hand feeling agent, quantity for spray is every square chi of scytoblastema spraying 6g hand feeling agent, leaves standstill 1.5h, obtains described solvent resistant leather.
embodiment 2
The production method of solvent resistant leather, specifically comprises the steps:
Step one, shake soft: prepare scytoblastema, scytoblastema is placed in the soft machine that shakes shakes soft;
Step 2, toggling: by shake soft after scytoblastema be placed on toggling machine and carry out toggling, toggling temperature is 55 DEG C, stretches tight apart from 10cm;
Step 3, fill: the scytoblastema after toggling is placed in roller coating filling liquid on coating roller, leave standstill 20min, described filling liquid comprises the following raw material according to mass fraction meter: 295 parts, water, penetrant m elioP-4893.B(Clariant Chemical Co., Ltd.) 29 parts, acrylic resin 248 parts, aqueous epoxy resin emulsion 14 parts, each roller coating amount is every square chi of scytoblastema roller coating filling liquid 19g;
Step 4, vacuumizes: be placed on vacuum machine by the scytoblastema after filling and vacuumize, temperature 68 DEG C, time 21min, vacuum tightness is 0.8MPa;
Step 5, mend wound: the scytoblastema after vacuumizing is carried out deburring, hinder material by benefit after deburring and carry out benefit wound, mend wound described in step 5 and expect the following raw material that comprises according to mass fraction meter: mend and hinder the meticulous coating company limited of filler FI-78-034(Si tal fibre) 95 parts, pigment 3 parts;
Step 6, buffing: the scytoblastema after a pressing plate is placed on buffing machine, carries out buffing with sand paper;
Step 7, blows ash: the dust blowing away the scytoblastema surface after buffing;
Step 8, spraying solid: scytoblastema is placed on spraying machine and sprays solid, 15min is toasted at 80 DEG C, the quantity for spray of described solid is every square chi of scytoblastema spraying 5g solid, and described solid comprises the following raw material according to mass fraction meter: 298 parts, water, ethylene glycol monobutyl ether 99 parts, acrylic resin dispersion liquid MelioPromulAP-39.A(Clariant Chemical Co., Ltd.) 98 parts;
Step 9, a roller coating: the scytoblastema of spraying solid is placed in roller coating solid on coating roller, at 80 DEG C, toast 18min, described solid comprises the following raw material according to mass fraction meter: 298 parts, water, ethylene glycol monobutyl ether 99 parts, acrylic resin dispersion liquid MelioPromulAP-39.A98 part;
Step 10, a pressing plate: be placed on embossing machine by the scytoblastema after a roller coating and carry out pressing plate, during pressing plate, temperature is 78 DEG C, and pressure is 7790N, and the time is 3s;
Step 11, secondary roller coating: the scytoblastema through pressing plate to be successively placed on coating roller roller coating solid again, at 82 DEG C, toast 15min bis-roller coating solid used comprise following raw material according to mass fraction meter: 40 parts, water, the meticulous coating company limited of permeate agent PT-6507(Si tal fibre) 29 parts, urethane resin 70 parts, the water-soluble meticulous coating company limited of synthesis resin RC-78-222(Si tal fibre) 245 parts, the meticulous coating company limited of water soluble acrylic resin RA-2(Si tal fibre) 65 parts, delustring filler 28 parts, the meticulous coating company limited of cationic fillers FI-1285(Si tal fibre) 69 parts, casein 29 parts, the meticulous coating company limited of non-ionic water silicon emulsion HM-77-054(Si tal fibre) 8 parts, water based silicone solution MelioLV-03(Clariant Chemical Co., Ltd.) 2 parts, secondary roller coating amount is every square chi of scytoblastema roller coating 5g, the solid content of wherein said water based silicone solution is 10%,
Step 12, secondary pressure plate: the scytoblastema after secondary roller coating is placed on embossing machine and carries out pressure hole, temperature is 92 DEG C, and pressure is 1170N, and the time is 1s;
Step 13, spraying: the scytoblastema after secondary pressure plate is placed on spraying machine and sprays, rear standing 30min, the raw materials used following raw material comprised according to mass fraction meter during spraying: 440 parts, water, permeate agent PT-650729 part, urethane resin 110 parts, dissolubility synthesis resin RC-78-222145 part, water soluble acrylic resin RA-275 part, the meticulous coating company limited of waterborne polyurethane resin RU-3901Unires(Si tal fibre) 28 parts, delustring filler 28 parts, bating oil 29 parts, non-ionic water silicon emulsion HM-77-05429 part, casein 29 parts, water based silicone solution MelioLV-032 part, pigment 95 parts, quantity for spray is every square chi of scytoblastema spraying 9g,
Step 14, a spraying polyurethane gloss oil: scytoblastema is placed in spraying polyurethane gloss oil on spraying machine, quantity for spray is every square chi of scytoblastema spraying 9g polyurethane gloss oil;
Step 15, No. three pressing plates: scytoblastema is placed on embossing machine and carries out pressing plate, temperature 89 DEG C, pressure is 1160N, and the time is 1s;
Step 10 six, secondary spraying polyurethane gloss oil: scytoblastema is placed in spraying polyurethane gloss oil on spraying machine, quantity for spray is every square chi of scytoblastema spraying 5g polyurethane gloss oil;
Step 10 seven, tumbling: scytoblastema is placed in tumbling on rolling machine, temperature 88 DEG C, pressure is 190N, after at 20 DEG C leave standstill 1h;
Step 10 eight, spraying hand feeling agent: be placed in by scytoblastema on spraying machine and spray hand feeling agent, quantity for spray is every square chi of scytoblastema spraying 5g hand feeling agent, leaves standstill 1h, obtains described solvent resistant leather.
embodiment 3
The production method of solvent resistant leather, specifically comprises the steps:
Step one, shake soft: prepare scytoblastema, scytoblastema is placed in the soft machine that shakes shakes soft;
Step 2, toggling: by shake soft after scytoblastema be placed on toggling machine and carry out toggling, toggling temperature is 65 DEG C, stretches tight apart from 10cm;
Step 3, fill: the scytoblastema after toggling is placed in roller coating filling liquid on coating roller, leave standstill 30min, described filling liquid comprises the following raw material according to mass fraction meter: 305 parts, water, penetrant m elioP-4893.B(Clariant Chemical Co., Ltd.) 31 parts, acrylic resin 252 parts, aqueous epoxy resin emulsion 16 parts, each roller coating amount is every square chi of scytoblastema roller coating filling liquid 21g;
Step 4, vacuumizes: be placed on vacuum machine by the scytoblastema after filling and vacuumize, temperature 71 DEG C, time 18min, vacuum tightness is 0.9MPa;
Step 5, mend wound: the scytoblastema after vacuumizing is carried out deburring, hinder material by benefit after deburring and carry out benefit wound, mend wound described in step 5 and expect the following raw material that comprises according to mass fraction meter: mend and hinder the meticulous coating company limited of filler FI-78-034(Si tal fibre) 105 parts, pigment 6 parts;
Step 6, buffing: the scytoblastema after a pressing plate is placed on buffing machine, carries out buffing with sand paper;
Step 7, blows ash: the dust blowing away the scytoblastema surface after buffing;
Step 8, spraying solid: scytoblastema is placed on spraying machine and sprays solid, 10min is toasted at 85 DEG C, the quantity for spray of described solid is every square chi of scytoblastema spraying 7g solid, and described solid comprises the following raw material according to mass fraction meter: 302 parts, water, ethylene glycol monobutyl ether 101 parts, acrylic resin dispersion liquid MelioPromulAP-39.A(Clariant Chemical Co., Ltd.) 102 parts;
Step 9, a roller coating: the scytoblastema of spraying solid is placed in roller coating solid on coating roller, at 85 DEG C, toast 15min, described solid comprises the following raw material according to mass fraction meter: 302 parts, water, ethylene glycol monobutyl ether 101 parts, acrylic resin dispersion liquid MelioPromulAP-39.A102 part;
Step 10, a pressing plate: be placed on embossing machine by the scytoblastema after a roller coating and carry out pressing plate, during pressing plate, temperature is 82 DEG C, and pressure is 780N, and the time is 3s;
Step 11, secondary roller coating: the scytoblastema through pressing plate to be successively placed on coating roller roller coating solid again, at 86 DEG C, toast 12min bis-roller coating solid used comprise following raw material according to mass fraction meter: 60 parts, water, the meticulous coating company limited of permeate agent PT-6507(Si tal fibre) 31 parts, urethane resin 90 parts, the water-soluble meticulous coating company limited of synthesis resin RC-78-222(Si tal fibre) 255 parts, the meticulous coating company limited of water soluble acrylic resin RA-2(Si tal fibre) 75 parts, delustring filler 32 parts, the meticulous coating company limited of cationic fillers FI-1285(Si tal fibre) 71 parts, casein 31 parts, the meticulous coating company limited of non-ionic water silicon emulsion HM-77-054(Si tal fibre) 12 parts, water based silicone solution MelioLV-03(Clariant Chemical Co., Ltd.) 4 parts, secondary roller coating amount is every square chi of scytoblastema roller coating 7g, the solid content of wherein said water based silicone solution is 12%,
Step 12, secondary pressure plate: the scytoblastema after secondary roller coating is placed on embossing machine and carries out pressure hole, temperature is 92 DEG C, and pressure is 1180N, and the time is 1s;
Step 13, spraying: the scytoblastema after secondary pressure plate is placed on spraying machine and sprays, rear standing 30-40min, the raw materials used following raw material comprised according to mass fraction meter during spraying: 460 parts, water, permeate agent PT-650731 part, urethane resin 130 parts, dissolubility synthesis resin RC-78-222155 part, water soluble acrylic resin RA-285 part, the meticulous coating company limited of waterborne polyurethane resin RU-3901Unires(Si tal fibre) 32 parts, delustring filler 32 parts, bating oil 31 parts, non-ionic water silicon emulsion HM-77-05431 part, casein 31 parts, water based silicone solution MelioLV-034 part, pigment 105 parts, quantity for spray is every square chi of scytoblastema spraying 11g,
Step 14, a spraying polyurethane gloss oil: scytoblastema is placed in spraying polyurethane gloss oil on spraying machine, quantity for spray is every square chi of scytoblastema spraying 11g polyurethane gloss oil;
Step 15, No. three pressing plates: scytoblastema is placed on embossing machine and carries out pressing plate, temperature 92 DEG C, pressure is 1160N, and the time is 3s;
Step 10 six, secondary spraying polyurethane gloss oil: scytoblastema is placed in spraying polyurethane gloss oil on spraying machine, quantity for spray is every square chi of scytoblastema spraying 7g polyurethane gloss oil;
Step 10 seven, tumbling: scytoblastema is placed in tumbling on rolling machine, temperature 91 DEG C, pressure is 190N, after at 30 DEG C leave standstill 1h;
Step 10 eight, spraying hand feeling agent: be placed in by scytoblastema on spraying machine and spray hand feeling agent, quantity for spray is every square chi of scytoblastema spraying 7g hand feeling agent, leaves standstill 2h, obtains described solvent resistant leather.
Performance test is carried out to the embodiment of the present invention 1 to 3 gained leather; Wet-rub resistance carries out as follows: get test specimens skin, long 20cm, wide 4cm, gets calico wetting with distilled water in advance, water content 100%, with its friction testing sample skin, friction frequency is per minute 30 times, reciprocating friction 150 times, after calico is dry at 50-60 DEG C, dried calico and pollution gray scales are compared, visual calico situation; Resistance to xerotripsis is carried out as follows: get test specimens skin, long 20cm, wide 4cm, get dry calico, with its friction testing sample skin, friction frequency is per minute 30 times, reciprocating friction 150 times, after calico is dry at 50-60 DEG C, dried calico and pollution gray scales are compared, visual calico situation; Result of determination: excellent: wet rubbing calico and xerotripsis calico all not to stay color, leather Bearable dry and wet wipe excellent performance is described; Good: during wet rubbing, calico to leave Little color, during xerotripsis, calico does not stay color, illustrate that leather Bearable dry and wet wipe is functional; Not good: xerotripsis calico leaves color, illustrate that leather Bearable dry and wet wipe performance is not good; Leather ultimate strength and elongation at break measuring method adopt galley proof method to carry out, and ageing resistance is graded with reference to ASTMD1148-07A, and wherein leather solvent resistance mainly tests the mensuration of the color fastness to organic solvents of leather, carry out with reference to DINENISO11643.
Table 1 performance test
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Ultimate strength, N | 348 | 343 | 345 |
| Elongation at break, % | 42.1 | 41.6 | 41.6 |
| Color inhibition, level | 4 | 4 | 4 |
| Bearable dry and wet wipe | Excellent | Excellent | Excellent |
| Solvent resistance, level | 4 | 4 | 4 |
| Wear resistance, level | 3 | 4 | 4 |
As seen from the above table, by soft, the toggling of shaking to leather, fill, vacuumize, mend wound, buffing, blow ash, spraying solid, a roller coating, pressing plate, secondary roller coating, secondary pressure plate, spraying, an operation process such as spraying polyurethane gloss oil, No. three pressing plates, secondary spraying polyurethane gloss oil, tumbling and spraying hand feeling agents, and carry out rationally composite to the material that each operation uses, make leather not only have excellent solvent resistance and yellowing resistance, also there is good ultimate strength and wear resistance.
The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall into the claimed scope of the invention
In.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (9)
1. the production method of solvent resistant leather, it is characterized in that, comprise the steps: to prepare scytoblastema, scytoblastema processed successively in accordance with the following steps: soft, the toggling of shaking, fill, vacuumize, mend wound, buffing, blow ash, spray solid, a roller coating, pressing plate, secondary roller coating, secondary pressure plate, spraying, spraying polyurethane gloss oil, No. three pressing plates, secondary spraying polyurethane gloss oil, tumbling, spraying hand feeling agent.
2. the production method of solvent resistant leather according to claim 1, is characterized in that, specifically comprise the steps:
Step one, shake soft: prepare scytoblastema, scytoblastema is placed in the soft machine that shakes shakes soft;
Step 2, toggling: by shake soft after scytoblastema be placed on toggling machine and carry out toggling, toggling temperature is 55-65 DEG C, stretches tight apart from 10cm;
Step 3, fills: the scytoblastema after toggling is placed in roller coating filling liquid on coating roller, leaves standstill 20-30min;
Step 4, vacuumizes: be placed on vacuum machine by the scytoblastema after filling and vacuumize, temperature 68-71 DEG C, time 18-21min, vacuum tightness is 0.8-0.9MPa;
Step 5, mends wound: the scytoblastema after vacuumizing is carried out deburring, hinders material carry out benefit wound after deburring by benefit;
Step 6, buffing: the scytoblastema after a pressing plate is placed on buffing machine, carries out buffing with sand paper;
Step 7, blows ash: the dust blowing away the scytoblastema surface after buffing;
Step 8, spraying solid: scytoblastema is placed on spraying machine and sprays solid, toast 10-15min at 80-85 DEG C;
Step 9, a roller coating: the scytoblastema of spraying solid is placed in roller coating solid on coating roller, toasts 15-18min at 80-85 DEG C;
Step 10, a pressing plate: be placed on embossing machine by the scytoblastema after a roller coating and carry out pressing plate, during pressing plate, temperature is 78-82 DEG C, and pressure is 780-790N, and the time is 1-3s;
Step 11, secondary roller coating: the scytoblastema through pressing plate to be successively placed on coating roller roller coating solid again, to toast 12-15min at 82-86 DEG C;
Step 12, secondary pressure plate: the scytoblastema after secondary roller coating is placed on embossing machine and carries out pressure hole, temperature is 88-92 DEG C, and pressure is 1170-1180N, and the time is 1-3s;
Step 13, spraying: the scytoblastema after secondary pressure plate is placed on spraying machine and sprays, rear standing 30-40min;
Step 14, a spraying polyurethane gloss oil: scytoblastema is placed in spraying polyurethane gloss oil on spraying machine, quantity for spray is every square chi of scytoblastema spraying 9-11g polyurethane gloss oil;
Step 15, No. three pressing plates: scytoblastema is placed on embossing machine and carries out pressing plate, temperature 89-92 DEG C, pressure is 1160-1180N, and the time is 1-3s;
Step 10 six, secondary spraying polyurethane gloss oil: scytoblastema is placed in spraying polyurethane gloss oil on spraying machine, quantity for spray is every square chi of scytoblastema spraying 5-7g polyurethane gloss oil;
Step 10 seven, tumbling: scytoblastema is placed in tumbling on rolling machine, temperature 88-91 DEG C, pressure is 190-200N, after at 20-30 DEG C leave standstill 1-2h;
Step 10 eight, spraying hand feeling agent: be placed in by scytoblastema on spraying machine and spray hand feeling agent, quantity for spray is every square chi of scytoblastema spraying 5-7g hand feeling agent, leaves standstill 1-2h, obtains described solvent resistant leather.
3. the production method of solvent resistant leather according to claim 2, is characterized in that, scytoblastema described in step one is head layer ox-hide.
4. the production method of solvent resistant leather according to claim 2, it is characterized in that, filling liquid described in step 3 comprises the following raw material according to mass fraction meter: water 295-305 part, penetrant m elioP-4893.B29-31 part, acrylic resin 248-252 part, aqueous epoxy resin emulsion 14-16 part.
5. the production method of solvent resistant leather according to claim 4, is characterized in that, roller coating described in step 3, and each roller coating amount is every square chi of scytoblastema roller coating filling liquid 19-21g.
6. the production method of solvent resistant leather according to claim 2, is characterized in that, mends the following raw material that wound expects to comprise according to mass fraction meter: mend and hinder filler FI-78-03495-105 part, pigment 3-6 part described in step 5.
7. the production method of solvent resistant leather according to claim 2, it is characterized in that, the quantity for spray of solid described in step 8 is every square chi of scytoblastema spraying 5-7g solid, and described in step 8 and step 9, solid comprises the following raw material according to mass fraction meter: water 298-302 part, ethylene glycol monobutyl ether 99-101 part, acrylic resin dispersion liquid MelioPromulAP-39.A98-102 part.
8. the production method of solvent resistant leather according to claim 2, it is characterized in that, in step 11, secondary roller coating solid used comprises the following raw material according to mass fraction meter: water 40-60 part, permeate agent PT-650729-31 part, urethane resin 70-90 part, water-soluble synthesis resin RC-78-222245-255 part, water soluble acrylic resin RA-265-75 part, delustring filler 28-32 part, cationic fillers FI-128569-71 part, casein 29-31 part, non-ionic water silicon emulsion HM-77-0548-12 part, water based silicone solution MelioLV-032-4 part, secondary roller coating amount is every square chi of scytoblastema roller coating 5-7g, the solid content of wherein said water based silicone solution is 10%-12%.
9. the production method of solvent resistant leather according to claim 2, it is characterized in that, in step 13, the raw materials used following raw material comprised according to mass fraction meter during spraying: water 440-460 part, permeate agent PT-650729-31 part, urethane resin 110-130 part, dissolubility synthesis resin RC-78-222145-155 part, water soluble acrylic resin RA-275-85 part, waterborne polyurethane resin RU-3901Unires28-32 part, delustring filler 28-32 part, bating oil 29-31 part, non-ionic water silicon emulsion HM-77-05429-31 part, casein 29-31 part, water based silicone solution MelioLV-032-4 part, pigment 95-105 part, quantity for spray is every square chi of scytoblastema spraying 9-11g.
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| CN114622043A (en) * | 2022-04-13 | 2022-06-14 | 晋江新艺皮革制品有限公司 | Method for manufacturing top waterproof leather |
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