CN1590635A - Processing method of ultrafine fiber needing non-woven fabric simulated genuine leather - Google Patents
Processing method of ultrafine fiber needing non-woven fabric simulated genuine leather Download PDFInfo
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- CN1590635A CN1590635A CNA2004100494614A CN200410049461A CN1590635A CN 1590635 A CN1590635 A CN 1590635A CN A2004100494614 A CNA2004100494614 A CN A2004100494614A CN 200410049461 A CN200410049461 A CN 200410049461A CN 1590635 A CN1590635 A CN 1590635A
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- woven fabrics
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- needle punched
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- 239000010985 leather Substances 0.000 title claims abstract description 11
- 239000004745 nonwoven fabric Substances 0.000 title claims description 29
- 238000003672 processing method Methods 0.000 title claims description 15
- 229920001410 Microfiber Polymers 0.000 title claims description 9
- 239000004744 fabric Substances 0.000 claims abstract description 45
- 239000003513 alkali Substances 0.000 claims abstract description 37
- 239000000835 fiber Substances 0.000 claims abstract description 37
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 20
- 238000005470 impregnation Methods 0.000 claims description 56
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 239000002585 base Substances 0.000 claims description 32
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 27
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 27
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 16
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000007921 spray Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 239000003658 microfiber Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 description 36
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 8
- 239000010935 stainless steel Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 230000001112 coagulating effect Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001033 ether group Chemical group 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 208000012886 Vertigo Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
Abstract
A superfine island-in-sea fibre type non-woven needled fabric as simulative leather is prepared through treating basic fabric by dipping PVA and shrinking, dipping alkali-resistant PU resin, opening by continuously decreasing the alkali, and post-finishing.
Description
Technical field
The present invention relates to a kind of processing method of island superfine fiber needle punched non-woven fabrics emulation skin.
Background technology
Along with consolute spining technology and composite algorithm spining technology and consolute and the compound continuous development of spinning the fibre technologies such as spining technology that combine, with the island bundle superfine fibre be raw material Development and Production go out the PU synthetic leather of high emulation.In the production process of ultra-fine imitation leather, at present domestic mainly is to adopt the dissolution with solvents mode to open fine the processing, what use is exactly following method with big as Yantai ten thousand China, Shandong: Chinese patent application number is 00107308.7, and denomination of invention be " remove from office and processing method in a kind of superfine fiber chemical leather-naval port ".Said method is owing to adopt organic solvents such as toluene or butanone to open fine the processing, and solvent evaporates is very big to operator ' s health and ambient influnence in process of production, and toluene residual toxicity in the finished product micro fiber leather, not environmental protection of product.
Summary of the invention
The objective of the invention is to adopt organic solvent to open the fine problem that exists not environmental protection of handling, a kind of processing method of island superfine fiber needle punched non-woven fabrics emulation skin of the environmental issue that can solve production process and finished product is provided at existing method.
The present invention includes the step of following order:
(1) base cloth is handled: with the island superfine fiber needle punched non-woven fabrics is base cloth, carries out boiling water contraction and PVAC polyvinylalcohol impregnation and handles, and penetrates oven dry, accurate press polish typing, batches through infrared preliminary drying, lax holder net then;
(2) impregnation of PU wet method is handled: with base cloth handle the back gained the grey cloth mandatory extruding of multiple roll PU impregnation under liquid successively, master solidified, pair is solidified, washing, hot water wash removal PVA, dry, batch, described PU (polyurethane resin) employing alkali resistance PU resin;
(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.
(4) back arrangement.
Base cloth of the present invention can adopt and wash/bright and beautiful island superfine fiber needle punched non-woven fabrics, wash/bright and beautiful ratio is preferred 40～20/60～80, and also can adopt and wash/wash the fine needle punched non-woven fabrics of superfine islands-in-sea bicomponent.Preferred 150～the 600g/m of island superfine fiber needle punched non-woven fabrics grammes per square metre scope
2, the preferred 0.6～3.0mm of thickness.
The present invention is in base cloth is handled, preferable methods is base cloth boiling water to be shunk with the PVA impregnation combine, dividing two grooves to carry out water bath with thermostatic control shrinks and the PVA impregnation, the first groove temperature is controlled at 60-70 ℃, and second groove is controlled at 80-95 ℃, and PVA impregnation amount is controlled at 2-8%, best PVA impregnation amount is controlled at 3-5%, base cloth be controlled at 5-25% to shrinkage factor in length and breadth, the best is controlled at 10-15% to shrinkage factor in length and breadth, the impregnation speed of a motor vehicle is controlled at 5～8m/min.
The present invention in the PU impregnation is handled, alkali resistance PU resin preferred, polyethers type PU resin, and the chain length of polyethers should 〉=1000, the chain length of polyethers is preferably 2000～4000.PU contains the immersion liquid solid content and is preferably 10-25%, and the best is 15-20%, and PU impregnation amount is preferably 20-60% for the ratio of PU resin in the finished product micro fiber leather, and optimal proportion is 30-55%.The temperature of DMF (dimethyl formamide) preferably is controlled at 15～25 degree in the main coagulating basin, and the temperature of DMF preferably is controlled at 10～20 degree in the secondary coagulating basin, and the temperature of hot water wash is 95～100 ℃, and bake out temperature is controlled at≤and 150 ℃.
The present invention opens in fine the processing in described continuous alkali decrement, cleans preferred suction washing of many group rotary drum sprays and the ultrasonic oscillation of adopting and cleans the cleaning way that combines; The alkali lye impregnation preferably is with to push under the forced fluid and is padded method; It is better that continuously alkali decrement pick-up is controlled at 50-100%, and caustic soda impregnation ratio is that 4-20% is better, evaporate temperature and be controlled at 100-105 ℃ better, the time of evaporating be 6-20 minute better; Circle drum suction negative pressure is-0.01～-1.0 atmospheric pressure, and ultrasonic power is 40～100KVA.
The back arrangement comprises processing such as dyeing, soft stentering forming, sanding, veneer.
Technique effect of the present invention is: the technology that the present invention adopts the PVA impregnation to combine with the base cloth contraction phase, evenly wrap up one deck PVA film on the islands-in-sea type fibre surface simultaneously in the density that improves nonwoven fabric, artificial " sea " composition that increases so can make the feel of micro fiber leather more soft, drapability is better, tearing strength is higher; It is that bonding filler carries out wet method PU complex machining process that the present invention adopts alkali resistance PU resin, makes the high elasticity that enriches minute aperture, the micro fiber leather of good hand feeling, has advantage ventilative, poisture-penetrability simultaneously, the more approaching natural skin of performance; The present invention adopts continuous alkali decrement fiber opening process, and can adopt rotary drum spray aspirator to realize no tension force washing function synchronously, can not influence the physical property of micro fiber leather because of the arrangement architecture that tension failure nonwoven fabric internal fiber is arranged, can thoroughly aspirate wash clean to the soluble polymer of " thick " that dissolve in the superfine fibre non-woven base cloth of more abundant (comparing) by this strong swabbing action again with the common machine fabric.In a word, the island superfine fiber needle punched non-woven fabrics emulation leatherware that the present invention produces has the performance of high emulation, and can not discharge harmful organic compound in production process and finished product, has solved environmental issue.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1, Fig. 2 are respectively the sectional elevation and the longitudinal sections of rotary drum spray aspirator among the embodiment.
Fig. 3 is shrinkage test figure as a result.
The specific embodiment
It is that 30/70 wash/bright and beautiful island superfine fiber needle punched non-woven fabrics is a raw material that embodiment adopts ratio, and its Gram Mass is 450g/m
2, thickness is 1.8mm, needling density is 2000 pins/cm
2
One, base cloth is handled:
To wash/bright and beautiful island superfine fiber needle punched non-woven fabrics carries out overfeeding storage cloth, carries out the first groove PVA solution preshrunk impregnation, the second groove PVA solution preshrunk impregnation then successively, quantitatively padding machine, infrared preliminary drying, loose holder net hot blast penetrate oven dry, accurate press polish is finalized the design, batched.
The temperature of its first groove PVA solution is controlled at 65 ℃, and the temperature of the second groove PVA solution is controlled at 85 ℃, and the concentration of PVA solution is 6%, and the impregnation speed of a motor vehicle is controlled at 7m/min, and overfeeding is 8%, and PVA impregnation amount is 5%, and the temperature of infrared baking is controlled at 148 ℃.
Two, the impregnation of PU wet method is handled:
With base cloth handle the back gained the grey cloth mandatory extruding of multiple roll PU impregnation under storage cloth, liquid successively, the master is solidified, pair is solidified, multiple-grooved is washed, hot water wash two roads removal PVA, dry, batch.
In the impregnation of PU wet method is handled, PU adopts polyether-type PU resin, the chain length of polyethers is 3000, the temperature of DMF is 20 degree in the main coagulating basin, the temperature of DMF is 18 degree in the secondary coagulating basin, and the temperature of hot water wash is at 98 ℃, and bake out temperature is controlled at 148 ℃, it is 20% that PU contains the immersion liquid solid content, and PU impregnation amount is 40% for the ratio of PU resin in the finished product micro fiber leather.
Three, continuously the alkali decrement is opened fine the processing: the grey cloth behind the impregnation PU successively through storage cloth, alkali lye impregnation, evaporate, eight road rotary drums spray aspirators aspirate washing, ultrasonic oscillation cleaning, acetic acid neutralization, washing, cropping are batched.
The alkali decrement is opened in fine the processing continuously, and used alkali lye is that concentration is 10% NAOH solution, and evaporating temperature is 100 ℃, and the time is 10 minutes, and rotary drum suction negative pressure is-0.06 atmospheric pressure.
Four, back arrangement: through processing such as dyeing, soft stentering forming, sanding, veneers, island superfine fiber needle punched non-woven fabrics emulation skin gets product.Because this step is a mature technology, is not described in detail in this.
Open in fine the processing in continuous alkali decrement, the structure of rotary drum spray aspirator is as depicted in figs. 1 and 2, and is as described below:
It comprises columnar rotary drum 3, be covered with perforate on the rotary drum 3, outside rotary drum 3, be with one deck nickel screen 2, nickel screen 2 is a cylindrical shape, be fitted on the rotary drum 3, and fix by pin, can dismantle and change, in rotary drum 3, be provided with the rotary drum inner bag of support, the rotary drum inner bag is by internal layer, support 6 and outer the composition, internal layer is positioned at the center of rotary drum inner bag, is a stainless steel hollow cylinder 9, and the cavity 8 of stainless steel hollow cylinder 9 is the cavity at rotary drum inner bag center, on stainless steel hollow cylinder 9, have three slits, support 6 is a stainless steel stent, welds together with stainless steel hollow cylinder 9, and skin is eight blocks of alkaline-resisting wear resistant nylon piece fillers 4, be fixed on the stainless steel stent 6, also be provided with three air channels 7 at the rotary drum inner bag, each air channel 7 is communicated with the cavity 8 of rotary drum 3 and stainless steel hollow cylinder 9, and three slits on the stainless steel hollow cylinder 9 link to each other one by one with three air channels 7.
When cleaning, superfine fibre non-woven base cloth 1 is attached on rotary drum 3 nickel screen 2 outward, be provided with three fixing spray heads 5 in the periphery of rotary drum 3 and distinguish correspondence positions with three air channels 7 in the rotary drum inner bag, the cavity 8 of rotary drum inner bag links to each other with the moisture separator of rotary drum 3 outsides, powerful blower fan, and rotary drum 3 links to each other with motor by transmission device such as belt dressing or gear drive.During work, motor rotates, rotary drum 3 and on nickel screen 2, superfine fibre non-woven base cloth 1 rotates together, and the rotary drum inner bag is static, spray head 5 is towards rotary drum 3 water sprays simultaneously, under the swabbing action of powerful blower fan, in the cavity 8 of rotary drum inner bag, formed certain negative pressure of vacuum, hydrating polymer on the superfine fibre non-woven base cloth 1 penetrates base cloth 1 with the moisture content in the superfine fibre non-woven base cloth 1 under the vacuum draw effect, perforate on nickel screen 2 and the rotary drum 3 enters the cavity 8 of rotary drum inner bag, and be inhaled into the moisture separator discharge, by this strong swabbing action the soluble polymer in the superfine fibre non-woven base cloth 1 is thoroughly aspirated wash clean.
Below be the engineer testing that the applicant does important process conditions:
1, the relation of PVA solution temperature and base cloth shrinkage factor:
This experiment under relaxed condition, in the 5%PVA solution, is done shrinkage test with the islands-in-sea type fibre needle punched non-woven fabrics, and result of the test is seen Fig. 3.
From the experimental result of Fig. 3, base cloth begins slow contraction in the time of 50 ℃, and 60 ℃ begin to shrink quickening, very fast 80～95 ℃ of contractions, tends towards stability substantially to 95 ℃ of later shrinkage factors in length and breadth.Simultaneously prevent to shrink the too fast cloth cover out-of-flatness that brings again in order to make base cloth fully be shunk raising base cloth density, the present invention should adopt sectional temperature control to shrink.Water temperature in first groove is controlled at 60～70 ℃, and base cloth is tentatively shunk, and enters second groove again, and the water solution temperature of second groove is controlled at 80～95 ℃.
2, the selection of PVA impregnation ratio:
This experiment changes by changing PVA impregnation ratio, and following constant of situation of other condition is done experimental result such as following table:
From above gained result, PVA impregnation amount should be controlled between 2～8%, and Optimal Control is 3～5%.
3, PU resin choice:
The present invention adopts alkali decrement fiber opening process, and requiring used PU resin is alkali resistance, and this experiment is 10% NaOH solution with concentration, and 95 ℃, the processing time is 20 minutes a processing experiment condition, result of the test such as following table:
From above-mentioned experimental result, PU Choice of Resin polyether-type is better, and its ether chain length should 〉=1000, and preferably selecting the ether chain length is 2000～4000 polyether-type PU resin.
4, PU impregnation ratio:
Island needle punched non-woven fabrics after the present invention handles PVA impregnation preshrunk carries out PU impregnation PROCESS FOR TREATMENT, and different PU impregnation ratios are compared test to the influence of end properties.The grammes per square metre of nonwoven fabric is 450g/m
2, PVA impregnation amount is 5%, and PU impregnation ratio is from 10%～70%, and from the result of the test explanation of following table: suitable PU impregnation ratio is 20～60%, and optimal proportion is 30～55%.
The present invention through PU impregnation oven dry after, the density of base cloth improves greatly, and after the PU impregnation many micropores is arranged in the base cloth, it is very difficult to make in the processing of alkali decrement alkali lye penetrate into base cloth inside, the present invention should adopt that fashion of extrusion promotion alkali lye permeates under the liquid.The impregnation of alkaline-resisting polyether-type PU resin, the about 450g/m of square grammes per square metre of needle punched non-woven fabrics are adopted in this experiment
2, square grammes per square metre after the impregnation reaches 650g/m
2, thickness 1.8～1.9mm, alkali number evaporate 100～105 ℃ of temperature, alkali lye pick-up 70%, by technological experiment to alkali lye impregnation ratio, evaporate process conditions such as time and select.
| Process conditions | Test data | |||||||||
| Caustic soda impregnation ratio | 2％ | 4％ | 6％ | 8％ | 10％ | 12％ | 14％ | 16％ | 20％ | |
| Evaporate the time | 20 | 16 | 15 | 12 | 10 | 10 | 10 | 8 | 6 | |
| The fiber reduction rate | 25 | 26.1 | 28.9 | 29.4 | 29.5 | 29.8 | 30 | 29.9 | 29.7 | |
| Open fine situation | Not exclusively | Not exclusively | More complete | More complete | Good | Good | Good | Good | Good | |
| Feel | Hard partially | Harder | Better | Better | Good | Good | Softer | Softer | Softer | |
| Elasticity | Difference | Difference | Better | Better | Good | Good | Generally | Loose | Relatively poor | |
| Tear temperature | Vertical | 75 | 83 | 90 | 100 | 106 | 109 | 100 | 97 | 95 |
| Horizontal | 60 | 67 | 71 | 89 | 95 | 102 | 94 | 82 | 73 | |
Can learn that by above test it is 4～20% better that the process conditions of alkali decrement, alkali decrement contain the caustic dip ratio, it is 6～12% that best alkali decrement contains the caustic dip ratio.The time of evaporating be 6～20 minutes better, the best is 8～15 minutes.When the alkali number excessive concentration, be prone to the PU resin and partly degrade, cause poor flexibility, tearing strength is low.
Claims (10)
1. the processing method of an island superfine fiber needle punched non-woven fabrics emulation skin is characterized in that comprising the step of following order:
(1) base cloth is handled: with the island superfine fiber needle punched non-woven fabrics is base cloth, carries out boiling water contraction and PVAC polyvinylalcohol impregnation and handles, and penetrates oven dry, accurate press polish typing, batches through infrared preliminary drying, lax holder net then;
(2) impregnation of PU wet method is handled: with base cloth handle the back gained the grey cloth mandatory extruding of multiple roll PU impregnation under liquid successively, the master is solidified, pair is solidified, washing, hot water wash, dry, batch, described PU employing alkali resistance PU resin;
(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.
(4) back arrangement.
2. the processing method of island superfine fiber needle punched non-woven fabrics emulation skin according to claim 1, it is characterized in that: in base cloth is handled, the contraction of base cloth boiling water is combined with the PVA impregnation, dividing two grooves to carry out water bath with thermostatic control shrinks and the PVA impregnation, the first groove temperature is controlled at 60-70 ℃, second groove is controlled at 80-95 ℃, and PVA impregnation amount is controlled at 2-8%, base cloth be controlled at 5-25% to shrinkage factor in length and breadth.
3. the processing method of island superfine fiber needle punched non-woven fabrics emulation skin according to claim 2 is characterized in that: described PVA impregnation amount is controlled at 3-5%, base cloth be controlled at 10-15% to shrinkage factor in length and breadth.
4. the processing method of island superfine fiber needle punched non-woven fabrics emulation skin according to claim 1 is characterized in that: described alkali resistance PU resin is a polyether-type PU resin, the chain length of polyethers 〉=1000.
5. the processing method of island superfine fiber needle punched non-woven fabrics emulation skin according to claim 4 is characterized in that: described polyether-type PU resin, the chain length of polyethers is 2000～4000.
6. the processing method of island superfine fiber needle punched non-woven fabrics emulation skin according to claim 1, it is characterized in that: in described PU impregnation is handled, PU contains the immersion liquid solid content and is controlled at 10-25%, and the ratio that PU impregnation amount is controlled at PU resin in the finished product micro fiber leather is 20-60%.
7. the processing method of island superfine fiber needle punched non-woven fabrics emulation skin according to claim 6, it is characterized in that: in described PU impregnation is handled, PU contains the immersion liquid solid content and is controlled at 15-20%, and the ratio that PU impregnation amount is controlled at PU resin in the finished product micro fiber leather is 30-55%.
8. the processing method of island superfine fiber needle punched non-woven fabrics emulation skin according to claim 1 is characterized in that: open in fine the processing in described continuous alkali decrement, the alkali lye impregnation is padded method for extruding under the band forced fluid.
9. the processing method of island superfine fiber needle punched non-woven fabrics emulation skin according to claim 1, it is characterized in that: open in fine the processing in described continuous alkali decrement, clean and adopt suction washing of many group rotary drum sprays and ultrasonic oscillation to clean the cleaning way that combines.
10. the processing method of island superfine fiber needle punched non-woven fabrics emulation skin according to claim 9, it is characterized in that: open in fine the processing in described continuous alkali decrement, alkali decrement pick-up is controlled at 50-100% continuously, caustic soda impregnation ratio is 4-20%, evaporate temperature and be controlled at 100-105 ℃, the time of evaporating is 6-20 minute, and circle drum suction negative pressure is-0.01～-1.0 atmospheric pressure, and ultrasonic power is 40～100KVA.
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|---|---|---|---|
| CNB2004100494614A CN1249295C (en) | 2004-06-17 | 2004-06-17 | Processing method of ultrafine fiber needing non-woven fabric simulated genuine leather |
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|---|---|---|---|
| CNB2004100494614A CN1249295C (en) | 2004-06-17 | 2004-06-17 | Processing method of ultrafine fiber needing non-woven fabric simulated genuine leather |
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| CN1249295C CN1249295C (en) | 2006-04-05 |
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| CN100564661C (en) * | 2007-12-20 | 2009-12-02 | 福建省南平金月合成革有限公司 | A kind of processing method of island ultra-thin fiber high-density needling non-woven fabrics emulation leather |
| CN101975686A (en) * | 2010-08-28 | 2011-02-16 | 禾欣可乐丽超纤皮(嘉兴)有限公司 | Hand sample machine for extracting sea components in seal island superfine fiber synthetic leather base cloth |
| CN102094340A (en) * | 2010-11-30 | 2011-06-15 | 吴江市凌志纺织有限公司 | Breathable artificial leather |
| CN102359024A (en) * | 2011-08-15 | 2012-02-22 | 浙江科一合成革有限公司 | Polyurethane ultrafine fiber synthetic leather and preparation method thereof |
| CN102416277A (en) * | 2011-10-27 | 2012-04-18 | 浙江宇邦滤材科技有限公司 | Filter material for ultrafine dust filtering and preparation method thereof |
| CN102442041A (en) * | 2011-09-23 | 2012-05-09 | 东莞市雄林新材料科技有限公司 | Microfiber artificial leather adhered with TPU film, and production process thereof |
| CN101798738B (en) * | 2009-12-21 | 2012-07-25 | 厦门泓信超细纤维材料有限公司 | Splitting method of non-woven impregnated base fabric |
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| CN103526561A (en) * | 2013-09-27 | 2014-01-22 | 昆山培新服装有限公司 | Synthesis technology of superfine fiber nonwoven synthetic leather subjected to PVA (polyvinyl acetate) pretreatment |
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| CN105442332A (en) * | 2015-12-22 | 2016-03-30 | 上海华峰超纤材料股份有限公司 | Skin-imitated superfine-fiber synthetic-leather base cloth and preparation method thereof |
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