CN101260619A - Method for processing island ultra-thin fiber high-density needling non-woven fabrics emulation leather - Google Patents
Method for processing island ultra-thin fiber high-density needling non-woven fabrics emulation leather Download PDFInfo
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- CN101260619A CN101260619A CNA2007101441069A CN200710144106A CN101260619A CN 101260619 A CN101260619 A CN 101260619A CN A2007101441069 A CNA2007101441069 A CN A2007101441069A CN 200710144106 A CN200710144106 A CN 200710144106A CN 101260619 A CN101260619 A CN 101260619A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000010985 leather Substances 0.000 title claims abstract description 25
- 239000000835 fiber Substances 0.000 title claims abstract description 21
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 18
- 238000012545 processing Methods 0.000 title claims description 7
- 239000004814 polyurethane Substances 0.000 claims abstract description 43
- 239000004744 fabric Substances 0.000 claims abstract description 20
- 229920002635 polyurethane Polymers 0.000 claims abstract description 15
- 239000003513 alkali Substances 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 230000001112 coagulating effect Effects 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 206010033546 Pallor Diseases 0.000 claims abstract description 4
- 238000005470 impregnation Methods 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 14
- 239000002585 base Substances 0.000 claims description 10
- 238000003672 processing method Methods 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 239000003995 emulsifying agent Substances 0.000 claims description 8
- 230000000740 bleeding effect Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000004043 dyeing Methods 0.000 claims description 4
- 238000012805 post-processing Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000002649 leather substitute Substances 0.000 abstract description 6
- 238000007598 dipping method Methods 0.000 abstract description 4
- 238000005187 foaming Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000011282 treatment Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 1
- 230000019612 pigmentation Effects 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000003892 spreading Methods 0.000 abstract 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 73
- 239000002002 slurry Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000000981 epithelium Anatomy 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- RHQJOQKKDRLNDH-YFKNTREVSA-N C(\C=C/C(=O)OCCCCCCCC)(=O)OCCCCCCCC.[Na] Chemical compound C(\C=C/C(=O)OCCCCCCCC)(=O)OCCCCCCCC.[Na] RHQJOQKKDRLNDH-YFKNTREVSA-N 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006264 polyurethane film Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229950004959 sorbitan oleate Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention relates to a method for machining an island superfine fiber high density pinprick non-woven fabrics artificial leather, which is applied to the artificial leather manufacture and comprises the following processes: (1) the foundation process; (2) the PU wet method dipping process; (3) the continuous alkali abatement fiber opening process; (4) the pigmentation, the flexible tentering and shaping, the peached finish on two sides by a roughing-up machine; (5) the post treatments such as the dry method facing. The method is characterized in that the following processes are performed between the (4) process and the (5) process which are as follows: (6) the rolling blanching at a high temperature of 80 to 120 DEG C; (7) the high concentration polyurethane DMF solution with a weight ratio of PU: DMF of 100:50-93 is coated on the single side of the fabrics; (8) the time delay of 30 to 80 seconds; (9) a low temperature of 10 to 15 DEG C high concentration of 15 to 25 percent of DMF solution coagulating basin is coagulated, washed by water, dried and wrapped up. The method has the advantages that the manufactured finished leather has even thickness, excellent anti-tear strength and good ventilation property, the shortcoming that the cross breaks of the fibril synthetic leather is concave is overcome; the single spreading effectively avoids the foaming phenomenon on the coating surface; the section color is constant, etc.
Description
Technical field
The present invention relates to a kind of processing method of island ultra-thin fiber high-density needling non-woven fabrics emulation leather, be applied to make the emulation skin.
Background technology
People have proposed requirements at the higher level to the natural leather substitute, not only require surface texture structure, the rerum natura of product, the feel of simulation product similar to corium, and require that the section structure structure of simulation product will be to natural leather similar.The section structure structure of natural leather is respectively the superfine fibre tissue of 0.01～0.5D, netted micropore tissue and fine and close cell structure from the bottom to the surface layer.
Present PU synthetic leather surface texture structure has exactly liked natural leather, and its manufacturing procedure is the dry method veneer.
In order further to try to achieve the similitude with natural leather, people utilize island ultra-thin fiber high-density needling non-woven fabrics as the synthetic PU emulation skin of base material, and it adopts needling density to reach 2000 pins/cm
2, wash/bright and beautiful ratio be 30/70, every square of grammes per square metre is 450g/m
2The island superfine fiber nonwoven fabric be raw material, its manufacturing procedure is:
(1) base cloth is handled: with the island ultra-thin fiber high-density needling non-woven fabrics is base cloth, carries out boiling water and shrinks, and forms the nonwoven fabric of three dimensional network macrostructure.Penetrate oven dry, accurate press polish typing, batch through infrared preliminary drying, lax holder net then.
(2) PU wet method impregnation impregnation process: the grey cloth that base cloth is handled the back gained successively under liquid the mandatory extruding of multiple roll PU dipping, coagulating basin solidify, wash, batch, described PU (polyurethane) employing alkali resistance PU resin.PU impregnation solution is that weight ratio PU: DMF is 100: 150～350 low concentration polyurethane DMF solution.Serviceability temperature is 15～25 ℃ about 10% DMF (dimethyl formamide) aqueous solution in the coagulating basin.
(3) continuously the alkali decrement is opened fine the processing: the grey cloth behind the impregnation PU successively through the alkali lye impregnation, evaporate, clean, sourly neutralize, wash, batch; Chinese patent " processing method of island superfine fiber needle punched non-woven fabrics emulation skin " (number of patent application is 20041004946.4) has been announced this treatment process.
(4) dyeing, soft stentering forming, two-sided sanding.
(5) post processing such as dry method veneer.Comprise processing such as dry method veneer, check, packing.
The emulation skin that utilizes said method to make, the superfine fibre organized layer in its section structure structure, netted micropore organized layer and natural leather are very approaching.But still there is very big-difference in fine and close cell structure superficial layer with natural leather.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, provide a kind of section structure structure to have the processing method of the island ultra-thin fiber high-density needling non-woven fabrics emulation leather of the fine and close cell structure of similar natural leather surface layer.
Purpose of the present invention can reach like this, a kind of processing method of island ultra-thin fiber high-density needling non-woven fabrics emulation leather, and it comprises operation successively:
(1) base cloth is handled;
(2) PU wet method impregnation impregnation process;
(3) the alkali decrement is opened fine the processing continuously;
(4) dyeing, soft stentering forming, the two-sided sanding of roughing-up machine;
(5) post processing such as dry method veneer;
It is characterized in that between the 4th, the 5th operation also succeeded by following operation:
(6) 80～120 ℃ of high temperature running roller blanchings;
(7) be that PU: DMF is 100: 50～93 high concentration polyurethane DMF solution single face coating with the weight ratio;
(8) through time-delay in 30～80 seconds;
15～25% high concentration DMF aqueous solution coagulating basins of (9) 10～15 ℃ of low temperature solidify, washing, oven dry, rolling.
The processing method of above-mentioned a kind of island ultra-thin fiber high-density needling non-woven fabrics emulation leather can also be to add AR-70 bleeding agent, S-80 emulsifying agent, lignocellulose in the high concentration polyurethane DMF of the 7th operation solution; Addition is that the PU of per 100 unit of weights adds 2～3 equivalent weight units of S-80 emulsifying agent, 2.5 equivalent weight units of AR-70 bleeding agent, 35～45 equivalent weight units of lignocellulose.
The present invention has following advantage compared to existing technology:
1, made finished product leather thickness is even, and tearing toughness is good, good permeability.
2, ABRASION RESISTANCE, resistance to ag(e)ing are better than natural leather, thereby can be widely used in high-grade footwear industry and all kinds of suitcase, industries such as high fashion, system ball, top-grade furniture and automobile decoration.
3, owing to formed the very fine and close pore structure of one deck on the base material after the alkali decrement operation again, this structure has reached unified mutually with the natural leather structure, has also just overcome the deficiency of superfine fiber chemical leather scrimp depression in the prior art.
4, the single face coating has prevented the foaming phenomenon of coating surface effectively through the time-delay operation.
5, cross section solid colour does not see that dipping solidifies micropore and is coated with the colouring discrimination that solidifies micropore; Have identical scrimp, elasticity and feel with natural leather, no foaming, wrinkle and decolouring have improved the performance of product greatly, and rerum natura is good.
Description of drawings
Accompanying drawing is the flow chart of processing method of the present invention.
The specific embodiment
The present invention is further described below in conjunction with the accompanying drawing flow chart.Base cloth of the present invention adopts and washs/bright and beautiful island ultra-thin fiber high-density needling non-woven fabrics, wash/bright and beautiful ratio selection 40～20/60～80 is good, every Gram Mass 135～650g/m
2, thickness 0.6～2.8mm.Its operation is successively:
(1) base cloth treatment process.Base cloth put into carry out boiling water in 80～99 ℃ the Water Tank with Temp.-controlled and shrink.Being controlled at about 15% to shrinkage factor in length and breadth of base cloth.
(2) PU wet method impregnation impregnation process.(2.1) the mandatory extruding of grey cloth multiple roll under the liquid PU with gained after the boiling water treating floods.It is the DMF solution of 100: 300 low concentration polyurethane that dipping solution is selected weight ratio PU: DMF for use.PU impregnation amount is that the proportion control of PU resin in finished product leather is 30～55%.In order to improve the impregnation amount of PU resin, can in solution, add the consumption of S-80 emulsifying agent (sorboside oleate or sorbitan oleate), add the S-80 emulsifier proportion adding of 2～3 equivalent weight units by the PU of per 100 unit of weights.(2.2) to place concentration be that 25% DMF aqueous solution coagulating basin solidifies to the grey cloth after will flooding, and solution temperature is controlled at 20 ℃.(2.3) with the water flushing that is not less than 90 ℃.(2.4) 145 ℃ of oven dry of infrared ray and rolling.
Grey cloth after the DMF of polyurethane solution impregnation is admitted in the aqueous solution of DMF and solidifies, at this moment, because DMF molecule and hydrone can form good hydrogen bond, therefore, DMF molecule in the slurry spreads in water rapidly, simultaneously because there is huge concentration difference in the DMF concentration in the DMF solution (slurry) of DMF concentration in the aqueous solution and polyurethane, this concentration difference makes water spread in slurry again, in this directional diffusion, DMF concentration in the slurry reduces, polyurethane molecular is because of losing DMF and constantly curl into structure cell under the effect of self Fan Dehuali, countless structure cells do not continue pile up form high-strength, the polyurethane film of high-tension.
In film forming procedure, directional diffusion owing to DMF and water has stayed countless passages in epithelium, in addition the curling formed hole of polyurethane itself, make to form countless micropores in the epithelium, these micropores make the polyurethane epithelium have high ventilation, poisture-penetrability and excellent elasticity performance.High density needle punched non-woven fabrics after process impregnation process portion has within it replenished into elastomeric PU resin on the one hand, make the gap of non-woven fabrics fiber be able to bonding, obtained and the similar compact texture of natural leather, between fiber, formed simultaneously netted microcellular structure, product is unlikely owing to filling becomes inflexible, this also is the freezing mechanism place of synthetic leather.
(3) the alkali decrement is opened fine the processing continuously.Operation by Chinese patent " processing method of island superfine fiber needle punched non-woven fabrics emulation skin " (number of patent application is 20041004946.4) described " the alkali decrement is opened fine the processing continuously " is carried out.
(4) dyeing, soft stentering forming, the two-sided sanding of roughing-up machine.
(6) grey cloth after utilizing constant temperature electricity running roller to sanding carries out the blanching of 90 ℃ of high temperature, and the moisture content on grey cloth surface is reduced, and infiltration is obstructed when preventing the secondary coating.
(7) be that PU: DMF is that 100: 90 high concentration polyurethane DMF solution carries out the single face coating on the grey cloth surface with the weight ratio.In order further to strengthen the fine and close effect of fine and close pore, can also in high concentration polyurethane DMF solution, add the consumption of micropore adjustment AR-70 bleeding agent (dioctyl maleate sodium sulfonate), S-80 emulsifying agent, lignocellulose.Consumption is that the PU of per 100 unit of weights adds 2～3 equivalent weight units of S-80 emulsifying agent, adds 2.5 equivalent weight units of AR-70 bleeding agent, 35～45 equivalent weight units of lignocellulose.
(8) grey cloth after the coating is forced to deliver in the low temperature and high concentration DMF aqueous solution coagulating basin to solidify by running roller after reaching time-delay in 80 seconds with 10 meters left and right sides distances of speed operation slowly again.Prolong the entry time after grey cloth is coated with so greatly, the PU slurry can be permeated slowly, prevented the difficult problem that the secondary coating surface bubbles effectively, formed the fine and closely woven micropore of the similar natural leather of one deck.
(9) 20% high concentration DMF aqueous solution coagulating basin through 10～15 ℃ of low temperature solidify, washing, oven dry, rolling.
(5) post processing such as dry method veneer.
The made finished product leather of said method, through the check of national plastic products quality supervision and inspection center, every index is as shown in the table, reaches the effect of emulation skin:
Claims (2)
1, a kind of processing method of island ultra-thin fiber high-density needling non-woven fabrics emulation leather, it comprises successively:
(1) base cloth is handled;
(2) PU wet method impregnation impregnation process;
(3) the alkali decrement is opened fine the processing continuously;
(4) dyeing, soft stentering forming, the two-sided sanding of roughing-up machine;
(5) post processing such as dry method veneer;
It is characterized in that between the 4th, the 5th operation also succeeded by following operation:
(6) 80～120 ℃ of high temperature running roller blanchings;
(7) be that PU: DMF is 100: 50～93 high concentration polyurethane DMF solution single face coating with the weight ratio;
(8) through time-delay in 30～80 seconds;
15～25% high concentration DMF aqueous solution coagulating basins of (9) 10～15 ℃ of low temperature solidify, washing, oven dry, rolling.
2, the processing method of a kind of island ultra-thin fiber high-density needling non-woven fabrics emulation leather according to claim 1 is characterized in that adding AR-70 bleeding agent, S-80 emulsifying agent, lignocellulose in the high concentration polyurethane DMF of the 7th operation solution; Addition is that the PU of per 100 unit of weights adds 2～3 equivalent weight units of S-80 emulsifying agent, 2.5 equivalent weight units of AR-70 bleeding agent, 35～45 equivalent weight units of lignocellulose.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101441069A CN100564661C (en) | 2007-12-20 | 2007-12-20 | A kind of processing method of island ultra-thin fiber high-density needling non-woven fabrics emulation leather |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101441069A CN100564661C (en) | 2007-12-20 | 2007-12-20 | A kind of processing method of island ultra-thin fiber high-density needling non-woven fabrics emulation leather |
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| CN101260619A true CN101260619A (en) | 2008-09-10 |
| CN100564661C CN100564661C (en) | 2009-12-02 |
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| CNB2007101441069A Expired - Fee Related CN100564661C (en) | 2007-12-20 | 2007-12-20 | A kind of processing method of island ultra-thin fiber high-density needling non-woven fabrics emulation leather |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094340A (en) * | 2010-11-30 | 2011-06-15 | 吴江市凌志纺织有限公司 | Breathable artificial leather |
| CN102115983A (en) * | 2011-01-26 | 2011-07-06 | 烟台华大化学工业有限公司 | Aqueous polyurethane superfine fiber synthetic leather and preparation method thereof |
| CN102172591A (en) * | 2010-12-30 | 2011-09-07 | 东莞市硕源电子材料有限公司 | Production method of ultra-clean wiping tape for hard disk |
| CN102605579A (en) * | 2012-04-20 | 2012-07-25 | 杭州路先非织造股份有限公司 | Dyeing spunlace non-woven cloth with high color fastness and manufacturing process |
| CN102599866A (en) * | 2012-03-23 | 2012-07-25 | 浙江梅盛实业股份有限公司 | Wiping cloth and manufacturing process of wiping cloth |
| CN102899917A (en) * | 2012-09-25 | 2013-01-30 | 禾欣可乐丽超纤皮(嘉兴)有限公司 | Manufacturing method of highly-bonded-leather superfine fiber synthesized leather |
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| CN103556426A (en) * | 2013-11-05 | 2014-02-05 | 北京麻世纪流行面料研发有限公司 | Cloth sueding process |
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| CN102172591A (en) * | 2010-12-30 | 2011-09-07 | 东莞市硕源电子材料有限公司 | Production method of ultra-clean wiping tape for hard disk |
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| CN104387784A (en) * | 2014-10-23 | 2015-03-04 | 贾泽华 | Lignocellulose composition, preparation method and application thereof |
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