CN103981730B - A kind of footwear moisture permeability superfine fiber chemical leather and manufacture method thereof - Google Patents
A kind of footwear moisture permeability superfine fiber chemical leather and manufacture method thereof Download PDFInfo
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- 239000005018 casein Substances 0.000 claims description 52
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims description 52
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- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The present invention relates to superfine fiber chemical leather technical field, particularly a kind of footwear moisture permeability superfine fiber chemical leather and manufacture method thereof.Manufacture method of the present invention take superfine fiber synthetic leather base cloth as base material, first, adopts water soluble starch solution dipping superfine fiber synthetic leather base cloth, then carries out water squeezing, drying and buffing; Then, by wet polyurethane slurry blade coating on base cloth, then steam coagulation, washing, water squeezing and drying is carried out; Finally, spray on wet-process coating, inhale line and polishing, namely obtain footwear moisture permeability superfine fiber chemical leather.Adopt the superfine fiber chemical leather that the method obtains, peel strength is greater than 20N/20mm, and surface color xerotripsis fastness is greater than 4.5 grades, and wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200ml/cm
2h, water vapor permeability is greater than 1.5mg/cm
2h, has comparatively highly-breathable and water vapor permeability, thus have good hygiene performance, and sanitation performance exceedes the natural leather of coating.
Description
Technical field
The invention belongs to superfine fiber chemical leather technical field, particularly a kind of footwear moisture permeability superfine fiber chemical leather and manufacture method thereof.
Background technology
Superfine fibre is the one of development in recent years fibre in differentiation rapidly, is the Typical Representative of novel synthetic fiber.Do not define accurately in the world at present, various countries' definition is slightly different, but is all definition standard with line density.PET line density is referred to as superfine fibre lower than 1.0dtex, PA line density lower than the single fiber of 1.0dtex by the textiles association of Germany, monofilament fineness is that the fiber of 0.3dtex ~ 1.0dtex is defined as superfine fibre by the PET committee of the U.S., AKZO then thinks that the upper limit of superfine fibre should be 0.3dtex, Italian then the fiber of below 0.5dtex is called superfine fibre, domesticly substantially monofilament fineness is referred to as superfine fibre at the fiber of below 1.1dtex at present, and be less than 0.1dtex be called superfine fibre.The synthetic fiber of each large kind all can spin superfine fibre, as polyester, polyamide, polyacrylonitrile, polypropylene fibre etc.Because the line density of superfine fibre monofilament is significantly less than general fibre, the thinnest reached at 0.0001dtex, due to the sharply reduction of monofilament linear density, just determining superfine fibre has many characteristics being different from conventional fibre.
Along with the development of modern science and technology, the production system of synthetic leather constantly absorbs the new and high technology of other industry, if initial artificial leather is first generation product, so synthetic leather is exactly second generation product, and the appearance of superfine fiber polyurethane leather just belongs to third generation product naturally.This product take not weaving fabric of superfine fiber as base material, dipping has the polyurethane slurry of open-celled structure, the huge surface area of superfine fibre and strong water imbibition effect are played, the part moisture-absorption characteristics making superfine fiber polyurethane leather be provided with leather to have, no matter thus from internal microstructure, or appearance tactile impression and the aspect such as physical characteristic and people's snugness of fit, all with leather closely.In addition, superfine fiber chemical leather has exceeded leather in chemical-resistant stability, mass uniformity, large production and processing adaptability and waterproof, anti-mildew etc.
The appearance of superfine fiber chemical leather, most important meaning is the status that this product improves whole industry.Superfine fibre and products thereof to take the lead in Study and Development primarily of Japan, starts to commercially produce, and achieve huge success beginning of the seventies late 1960s in synthetic leather product development.Nineteen sixty-five, Kuraray Co., Ltd. mainstream product " Kuraray Na " comes out, and has pulled open the history curtain that superfine fibre is produced.Japanese Kanebo Ltd in 1969 starts to produce shoe lining leather use, and the synthetic leather of commodity " Bereza " by name, selling point is abrasive polishing materials.1970, first toray Co., Ltd. was proposed the artificial suede shape synthetic leather " Ecsaina " that sea-island composite fiber manufactures.1981, Kuraray company started selling grain type dermatine " Sofrina ".After this high performance superfine fiber chemical leather progressively moves towards market, mainly contain " SavinaDP " of Zhong Fang company, " HilakeElettes " of Di Ren company, " HepaWool " of Asahi Kasei Corporation, " Nordfaser " of Germany, gondola " Anicfibre " etc.Du pont company, ICI company of Britain, German Hirst company, Eastern Europe, the former Soviet Union also add exploitation ranks in succession subsequently.At present, the production of superfine fiber chemical leather mainly concentrates on the countries such as Japan, China, Korea S.
The production of China's superfine fiber chemical leather is grown up behind the basis of Introduced from Japan Kuraray company technique in nineteen eighty-three by Yantai Synthetic Leather General Factory (rear title ten thousand Hua Chaoxian limited companies).Adopted lotus root shape porous fibre at that time, produce light face emulational leather, the fiber number that this factory's independent development in 1997 is different from imported technology is 0.01 dawn not figured type island superfine fiber, batch production " great Fu leather " ultra-fine emulational leather of light Noodles in 1999, and expanded production capacity further in 2003 on this basis, go up Article 3 emulational leather production line.After this, Changshu, Jiangsu Province synthetic leather head factory (being now the special leather Co., Ltd of Changshu bass) introduce technology and equipment basis on succeed in developing figured type superfine fibre height imitation leather, Shanghai Hua Feng group has succeeded in developing the ultra-fine imitation leather in indefinite island, and carrying out large-scale production rapidly, this group also has 3 production lines at present; In addition, nineteen ninety-five, Shandong Tongda Haidao New Material Co., Ltd successfully develops the ultra-fine emulational leather in indefinite island with Chinese characteristics, fibre fineness the most carefully can reach for 0.003 ~ 0.0005 dawn, there is independent intellectual property right, and develop into 4 production lines rapidly, become one of maximum ultra-fine emulational leather manufacturing enterprise of China, in addition Wen Zhou the Yellow River, east, Laiwu Thailand, Zhejiang section skill, Mei Sheng, Wenzhou Ge Jibu Co., Ltd, Shandong Jin Feng, Zibo friendship machinery; The a collection of enterprises such as Wuxi Zhong Jin plastics Co., Ltd of Jiangsu echo group have also all built up production line and have put into production successively, and also in 2005, the year-end ultra-fine emulational leather production line building up annual output 4000000 square metres put into production with the glad cooperation of Zhejiang Jiaxing standing grain in Kuraray company.
The development of China's superfine fiber chemical leather industry only has the course of more than ten years, obtains fast development in recent years, and China's Mainland has become the largest production base of global superfine fiber chemical leather.According to State Statistics Bureau's information material display, China's annual total import and export volume 36.36 of superfine fiber chemical leather in 2011 is with dollar, its middle outlet 10.7 hundred million meters (56.96 ten thousand tons), increase by 12.96 on a year-on-year basis, export volume account for 23.36% of total output, export trade volume 30.4 hundred million dollars, increases by 35.11% on a year-on-year basis, starts to define the third generation production development new historical stage.
Based on above development, superfine fiber chemical leather can be rated as the model that new material is combined with each other, and it has completed its by " copying " process to " conversion ", becomes the optimal material replacing natural leather.Because the diameter of superfine fibre almost reaches nano-grade size, there is huge specific area, extremely similar to the pencil collagenous fibres in natural leather, can compare favourably with natural leather in physical property.Superfine fiber chemical leather intensity is high, wear-resisting, cold-resistant, ageing-resistant, but its sanitation performance, can dyeability, processability very poor.Sanitation performance difference becomes the biggest obstacle of superfine fiber chemical leather in the application of footwear material, and the sanitation performance of footwear material depends mainly on the water vapour permeability of footwear material, the gas permeability that namely sanitation performance is good and water vapor permeability.
Summary of the invention
The object of the present invention is to provide one to have comparatively highly-breathable and water vapor permeability, thus there is footwear moisture permeability superfine fiber chemical leather and the manufacture method thereof of good hygiene performance.
For achieving the above object, the present invention is by the following technical solutions: method provided by the invention comprises the following steps:
1) flood: take superfine fiber synthetic leather base cloth as base material, service property (quality) mark is the water soluble starch aqueous impregnation of 1 ~ 2%, and control superfine fiber synthetic leather base cloth weightening finish 40 ~ 60%;
2) dry: it is 15 ~ 25% that the superfine fiber synthetic leather base cloth after dipping is dried to moisture at 60 ~ 90 DEG C;
3) buffing: by step 2) dried superfine fiber synthetic leather base cloth carries out buffing process;
4) blade coating: by step 3) a blade coating wet polyurethane slurry after gained superfine fiber synthetic leather base cloth buffing, and the thickness controlling wet polyurethane slurry coating is 0.1 ~ 0.2mm, then solidifies; Described wet polyurethane slurry is: with weight parts, and by wet polyurethane 100 parts, pigment 10 ~ 15 parts, solvent dimethylformamide 100 ~ 120 parts of Homogeneous phase mixing obtain;
5) spraying, inhale line and polishing: by step 4) superfine fiber synthetic leather base cloth after gained blade coating carries out spraying, inhaling line and polishing successively, obtains footwear moisture permeability superfine fiber chemical leather.
Further, step 1) described water soluble starch is the acid hydrolysis thing of starch from sweet potato.
Further, step 3) concrete operations of described buffing are: by dried superfine fiber synthetic leather base cloth successively by three sand paper fineness be 180 orders, 240 orders and 600 object buffing machines carry out buffing.
Further, described step 4) concrete operations of solidifying are: use steam baking oven to be solidified by wet polyurethane slurry coating at 50 ~ 70 DEG C.
Further, described step 4) superfine fiber synthetic leather base cloth of gained also carries out washing process after blade coating, concrete operations are: use multiple-grooved tandem rinsing machine to wash, and the content controlling solvent dimethylformamide in last rinsing bowl is lower than 0.5%, then dry process.
Further, step 5) concrete operations of described spraying are: use flush coater to be sprayed on wet polyurethane coating by painting casein finishing agent feed liquid, control quantity for spray is 25 ~ 35g/m
2; Then dry process;
Described painting casein finishing agent feed liquid is: with weight parts, 100 parts, water, casein finishing agent 5 ~ 10 parts, crosslinking agent 0.1 ~ 0.2 part, and Homogeneous phase mixing obtains.
Further, step 5) concrete operations of described suction line are: adopt through type vacuum tattoo machine to inhale line, running parameter is: preheat temperature 160 ~ 180 DEG C, the speed of a motor vehicle 2 ~ 4m/min.
Further, step 5) concrete operations of described polishing are: adopt through type felt polisher to carry out polishing, polishing roll rotating speed is 300 ~ 350r/min.
According to footwear moisture permeability superfine fiber chemical leather prepared by method provided by the invention, peel strength is greater than 20N/20mm, and surface color xerotripsis fastness is greater than 4.5 grades, and wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200ml/cm
2h, water vapor permeability is greater than 1.5mg/cm
2h.
Compared with prior art, manufacture method provided by the invention has following useful technique effect: in step 1) in by adopting the water soluble starch aqueous solution to carry out impregnation process to superfine fiber synthetic leather base cloth, appropriateness hydroaropic substance can be introduced in superfine fiber synthetic leather base cloth, thus strengthen superfine fiber synthetic leather base cloth to the transmission capacity of water, the vapor pervious performance of effective raising superfine fiber chemical leather, thus make sanitation performance better.In step 4) in by adopting wet polyurethane steam cure, obtain the polyurethane coating with superfine microcellular structure, make it have higher peel strength, and there is good gas permeability.Further, by by described step 4) the superfine fiber synthetic leather base cloth washing process of gained after blade coating, make the content of solvent dimethylformamide lower than 0.5%, make the footwear moisture permeability superfine fiber chemical leather obtained have higher sanitation performance.
Further, by adopting through type vacuum tattoo machine to inhale line, making the consolidation that superfine fiber synthetic leather base cloth becomes, there is higher pliability and permeability.
Further, casein finishing agent and polishing technology is adopted by being coated with in casein finishing agent feed liquid in spraying, make superfine fiber chemical leather surface more close to natural leather, obtain better outward appearance and feel, the coating formed has superfine crackle, improves gas permeability and the water vapor permeability of superfine fiber chemical leather further.
Footwear moisture permeability superfine fiber chemical leather prepared by the inventive method, peel strength is greater than 20 (N/20mm), and surface color xerotripsis fastness is greater than 4.5 grades, and wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200 (ml/cm
2h), water vapor permeability is greater than 1.5 (mg/cm
2h), sanitation performance exceedes the natural leather of coating.
Detailed description of the invention
Below in conjunction with embodiment, detailed description is made to the present invention.
A manufacture method for footwear moisture permeability superfine fiber chemical leather, comprising:
1) flood: take superfine fiber chemical leather as base cloth, the water soluble starch aqueous solution of mass fraction 1 ~ 2% is loaded through type dipping tank, dipping superfine fiber synthetic leather base cloth, and control superfine fiber synthetic leather base cloth weightening finish 40 ~ 60% by padding machine water squeezing;
Water soluble starch is the acid hydrolysis thing of starch from sweet potato, and preparation process is that starch from sweet potato crosses 80 order dusting covers, is placed in reactor, adds the hydrochloric acid of 3%, solution is stirred into water gruel shape, soaks 24 hours, drained by supernatant liquor in 45 DEG C; Repeat three times; Finally, with 5% sodium carbonate liquor to be neutralized to pH be 7.0.The water soluble starch aqueous solution of 1 ~ 2% is made into during use.
2) dry: utilizing through type baking oven at 60 ~ 90 DEG C, be dried to moisture the superfine fiber synthetic leather base cloth after dipping is 15 ~ 25%;
3) buffing: by step 2) dried superfine fiber synthetic leather base cloth successively by three sand paper fineness be 180 orders, 240 orders and 600 object buffing machines carry out buffing;
4) blade coating: by step 3) a blade coating wet polyurethane slurry after gained superfine fiber synthetic leather base cloth buffing, and the thickness controlling wet polyurethane slurry coating is 0.1 ~ 0.2mm, then serviceability temperature is that wet polyurethane slurry coating solidifies by the steam baking oven of 50 ~ 70 DEG C, and superfine fiber synthetic leather base cloth is formed the wet polyurethane coating with micropore; Described wet polyurethane slurry is: with weight parts, and by wet polyurethane 100 parts, pigment 10 ~ 15 parts, solvent dimethylformamide 100 ~ 120 parts of Homogeneous phase mixing obtain; Wet polyurethane is the special polyurethane industrial product being specifically designed to synthetic leather wet processing.As wet method resin HDW-3050, HDW-3100, HDW-3090 used for artificial leather etc. of Huada Chemical Group Co., Ltd..
Then wash process, concrete operations are: use multiple-grooved tandem rinsing machine to wash, and the content controlling solvent dimethylformamide in last rinsing bowl is lower than 0.5%, then dry process.
5) by step 4) gained superfine fiber synthetic leather base cloth carries out spraying, inhaling line and polishing successively, obtains footwear moisture permeability superfine fiber chemical leather.
The concrete operations of described spraying are: use flush coater to be sprayed on wet polyurethane coating by painting casein finishing agent feed liquid, control quantity for spray is 25 ~ 35g/m
2; Then dry process;
Being coated with casein finishing agent feed liquid is: with weight parts, 100 parts, water, and casein finishing agent 5 ~ 10 parts, crosslinking agent 0.1 ~ 0.2 part, Homogeneous phase mixing obtains.
Casein finishing agent is the casein and the modified product thereof that are specifically designed to natural leather covering with paint.Soft casein emulsion TINGELUSTRE251, water-based hard casein emulsion TINGELUSTRE232, the soft casein emulsion TINGELUSTRE217 of water-based etc. in water-based as one of sky, Shenzhen Science and Technology Development Co., Ltd..Crosslinking agent is the mixture of glutaraldehyde, glyoxal or the two arbitrary proportion.
The concrete operations of inhaling line are: adopt through type vacuum tattoo machine to inhale line, running parameter is: preheat temperature 160 ~ 180 DEG C, the speed of a motor vehicle 2 ~ 4m/min.
The concrete operations of polishing are: adopt through type felt polisher to carry out polishing, polishing roll rotating speed is 300 ~ 350r/min.
According to footwear moisture permeability superfine fiber chemical leather prepared by the method for the invention provides, peel strength is greater than 20 (N/20mm), and surface color xerotripsis fastness is greater than 4.5 grades, and wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200 (ml/cm
2h), water vapor permeability is greater than 1.5 (mg/cm
2h), sanitation performance exceedes the natural leather of coating.
Embodiment 1
A manufacture method for footwear moisture permeability superfine fiber chemical leather, comprising:
1) flood: take superfine fiber chemical leather as base cloth, the water soluble starch aqueous solution of mass fraction 1% is loaded through type dipping tank, dipping superfine fiber synthetic leather base cloth, and control superfine fiber synthetic leather base cloth weightening finish 40% by padding machine water squeezing;
Water soluble starch is the acid hydrolysis thing of starch from sweet potato, and preparation process is that starch from sweet potato crosses 80 order dusting covers, is placed in reactor, adds the hydrochloric acid of 3%, solution is stirred into water gruel shape, soaks 24 hours, drained by supernatant liquor in 45 DEG C; Repeat three times; Finally, with 5% sodium carbonate liquor to be neutralized to pH be 7.0.The water soluble starch aqueous solution of 1% is made into during use.
2) dry: utilizing through type baking oven at 60 DEG C, be dried to moisture the superfine fiber synthetic leather base cloth after dipping is 15%;
3) buffing: by step 2) dried superfine fiber synthetic leather base cloth successively by three sand paper fineness be 180 orders, 240 orders and 600 object buffing machines carry out buffing;
4) blade coating: by step 3) a blade coating wet polyurethane slurry after gained superfine fiber synthetic leather base cloth buffing, and the thickness controlling wet polyurethane slurry coating is 0.1mm, then using water to steam temperature is that wet polyurethane slurry coating solidifies by the gas baking oven of 50 ~ 70 DEG C, and superfine fiber synthetic leather base cloth is formed the wet polyurethane coating with micropore; Described wet polyurethane slurry is: with weight parts, and by wet polyurethane 100 parts, pigment 10 parts, solvent dimethylformamide 100 parts of Homogeneous phase mixing obtain; Wet polyurethane is the special polyurethane industrial product being specifically designed to synthetic leather wet processing, uses the wet method resin HDW-3050 used for artificial leather of Huada Chemical Group Co., Ltd..
Then wash process, concrete operations are: use multiple-grooved tandem rinsing machine to wash, and the content controlling solvent dimethylformamide in last rinsing bowl is lower than 0.5%, then dry process.
5) by step 4) gained superfine fiber synthetic leather base cloth carries out spraying, inhaling line and polishing successively, obtains footwear moisture permeability superfine fiber chemical leather.
The concrete operations of described spraying are: use flush coater to be sprayed on wet polyurethane coating by painting casein finishing agent feed liquid, control quantity for spray is 25g/m
2; Then dry process;
Being coated with casein finishing agent feed liquid is: with weight parts, 100 parts, water, and casein finishing agent 5 parts, crosslinking agent 0.1 part, Homogeneous phase mixing obtains.
Casein finishing agent is the casein and the modified product thereof that are specifically designed to natural leather covering with paint, uses soft casein emulsion TINGELUSTRE251 in the water-based of one of sky, Shenzhen Science and Technology Development Co., Ltd..Crosslinking agent is for being glutaraldehyde.
The concrete operations of inhaling line are: adopt through type vacuum tattoo machine to inhale line, running parameter is: preheat temperature 160 DEG C, speed of a motor vehicle 2m/min.
The concrete operations of polishing are: adopt through type felt polisher to carry out polishing, polishing roll rotating speed is 300r/min.
According to footwear moisture permeability superfine fiber chemical leather prepared by the method for the invention provides, peel strength is greater than 20 (N/20mm), and surface color xerotripsis fastness is greater than 4.5 grades, and wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200 (ml/cm
2h), water vapor permeability is greater than 1.5 (mg/cm
2h), sanitation performance exceedes the natural leather of coating.
Embodiment 2
A manufacture method for footwear moisture permeability superfine fiber chemical leather, comprising:
1) flood: take superfine fiber chemical leather as base cloth, the water soluble starch aqueous solution of mass fraction 2% is loaded through type dipping tank, dipping superfine fiber synthetic leather base cloth, and control superfine fiber synthetic leather base cloth weightening finish 60% by padding machine water squeezing;
Water soluble starch is the acid hydrolysis thing of starch from sweet potato, and preparation process is that starch from sweet potato crosses 80 order dusting covers, is placed in reactor, adds the hydrochloric acid of 3%, solution is stirred into water gruel shape, soaks 24 hours, drained by supernatant liquor in 45 DEG C; Repeat three times; Finally, with 5% sodium carbonate liquor to be neutralized to pH be 7.0.The water soluble starch aqueous solution of 2% is made into during use.
2) dry: utilizing through type baking oven at 60 ~ 90 DEG C, be dried to moisture the superfine fiber synthetic leather base cloth after dipping is 25%;
3) buffing: by step 2) dried superfine fiber synthetic leather base cloth successively by three sand paper fineness be 180 orders, 240 orders and 600 object buffing machines carry out buffing;
4) blade coating: by step 3) a blade coating wet polyurethane slurry after gained superfine fiber synthetic leather base cloth buffing, and the thickness controlling wet polyurethane slurry coating is 0.2mm, then using steam to dry temperature is that wet polyurethane slurry coating solidifies by the case of 50 ~ 70 DEG C, and superfine fiber synthetic leather base cloth is formed the wet polyurethane coating with micropore; Described wet polyurethane slurry is: with weight parts, and by wet polyurethane 100 parts, pigment 15 parts, solvent dimethylformamide 120 parts of Homogeneous phase mixing obtain; Wet polyurethane is the special polyurethane industrial product being specifically designed to synthetic leather wet processing, uses the wet method resin HDW-3100 used for artificial leather of Huada Chemical Group Co., Ltd..
Then wash process, concrete operations are: use multiple-grooved tandem rinsing machine to wash, and the content controlling solvent dimethylformamide in last rinsing bowl is lower than 0.5%, then dry process.
5) by step 4) gained superfine fiber synthetic leather base cloth carries out spraying, inhaling line and polishing successively, obtains footwear moisture permeability superfine fiber chemical leather.
The concrete operations of described spraying are: use flush coater to be sprayed on wet polyurethane coating by painting casein finishing agent feed liquid, control quantity for spray is 25 ~ 35g/m
2; Then dry process;
Being coated with casein finishing agent feed liquid is: with weight parts, 100 parts, water, and casein finishing agent 10 parts, crosslinking agent 0.2 part, Homogeneous phase mixing obtains.
Casein finishing agent is the casein and the modified product thereof that are specifically designed to natural leather covering with paint, uses the hard casein emulsion TINGELUSTRE232 of water-based of one of sky, Shenzhen Science and Technology Development Co., Ltd..Crosslinking agent is glyoxal.
The concrete operations of inhaling line are: adopt through type vacuum tattoo machine to inhale line, running parameter is: preheat temperature 180 DEG C, speed of a motor vehicle 4m/min.
The concrete operations of polishing are: adopt through type felt polisher to carry out polishing, polishing roll rotating speed is 350r/min.
According to footwear moisture permeability superfine fiber chemical leather prepared by the method for the invention provides, peel strength is greater than 20 (N/20mm), and surface color xerotripsis fastness is greater than 4.5 grades, and wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200 (ml/cm
2h), water vapor permeability is greater than 1.5 (mg/cm
2h), sanitation performance exceedes the natural leather of coating.
Embodiment 3
A manufacture method for footwear moisture permeability superfine fiber chemical leather, comprising:
1) flood: take superfine fiber chemical leather as base cloth, the water soluble starch aqueous solution of mass fraction 1% is loaded through type dipping tank, dipping superfine fiber synthetic leather base cloth, and control superfine fiber synthetic leather base cloth weightening finish 50% by padding machine water squeezing;
Water soluble starch is the acid hydrolysis thing of starch from sweet potato, and preparation process is that starch from sweet potato crosses 80 order dusting covers, is placed in reactor, adds the hydrochloric acid of 3%, solution is stirred into water gruel shape, soaks 24 hours, drained by supernatant liquor in 45 DEG C; Repeat three times; Finally, with 5% sodium carbonate liquor to be neutralized to pH be 7.0.The water soluble starch aqueous solution of 1% is made into during use.
2) dry: utilizing through type baking oven at 70 DEG C, be dried to moisture the superfine fiber synthetic leather base cloth after dipping is 20%;
3) buffing: by step 2) dried superfine fiber synthetic leather base cloth successively by three sand paper fineness be 180 orders, 240 orders and 600 object buffing machines carry out buffing;
4) blade coating: by step 3) a blade coating wet polyurethane slurry after gained superfine fiber synthetic leather base cloth buffing, and the thickness controlling wet polyurethane slurry coating is 0.2mm, then serviceability temperature is that wet polyurethane slurry coating solidifies by the steam baking oven of 50 ~ 70 DEG C, and superfine fiber synthetic leather base cloth is formed the wet polyurethane coating with micropore; Described wet polyurethane slurry is: with weight parts, and by wet polyurethane 100 parts, pigment 14 parts, solvent dimethylformamide 110 parts of Homogeneous phase mixing obtain; Wet polyurethane is the special polyurethane industrial product being specifically designed to synthetic leather wet processing, uses the wet method resin HDW-3090 used for artificial leather of Huada Chemical Group Co., Ltd..
Then wash process, concrete operations are: use multiple-grooved tandem rinsing machine to wash, and the content controlling solvent dimethylformamide in last rinsing bowl is lower than 0.5%, then dry process.
5) by step 4) gained superfine fiber synthetic leather base cloth carries out spraying, inhaling line and polishing successively, obtains footwear moisture permeability superfine fiber chemical leather.
The concrete operations of described spraying are: use flush coater to be sprayed on wet polyurethane coating by painting casein finishing agent feed liquid, control quantity for spray is 32g/m
2; Then dry process;
Being coated with casein finishing agent feed liquid is: with weight parts, 100 parts, water, and casein finishing agent 6 parts, crosslinking agent 0.1 part, Homogeneous phase mixing obtains.
Casein finishing agent is the casein and the modified product thereof that are specifically designed to natural leather covering with paint, uses the soft casein emulsion TINGELUSTRE217 of water-based of one of sky, Shenzhen Science and Technology Development Co., Ltd..The mixture of crosslinking agent arbitrary proportion both glutaraldehyde and glyoxal.
The concrete operations of inhaling line are: adopt through type vacuum tattoo machine to inhale line, running parameter is: preheat temperature 165 DEG C, speed of a motor vehicle 4m/min.
The concrete operations of polishing are: adopt through type felt polisher to carry out polishing, polishing roll rotating speed is 310r/min.
According to footwear moisture permeability superfine fiber chemical leather prepared by the method for the invention provides, peel strength is greater than 20 (N/20mm), and surface color xerotripsis fastness is greater than 4.5 grades, and wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200 (ml/cm
2h), water vapor permeability is greater than 1.5 (mg/cm
2h), sanitation performance exceedes the natural leather of coating.
Embodiment 4
A manufacture method for footwear moisture permeability superfine fiber chemical leather, comprising:
1) flood: take superfine fiber chemical leather as base cloth, the water soluble starch aqueous solution of mass fraction 1.5% is loaded through type dipping tank, dipping superfine fiber synthetic leather base cloth, and control superfine fiber synthetic leather base cloth weightening finish 45% by padding machine water squeezing;
Water soluble starch is the acid hydrolysis thing of starch from sweet potato, and preparation process is that starch from sweet potato crosses 80 order dusting covers, is placed in reactor, adds the hydrochloric acid of 3%, solution is stirred into water gruel shape, soaks 24 hours, drained by supernatant liquor in 45 DEG C; Repeat three times; Finally, with 5% sodium carbonate liquor to be neutralized to pH be 7.0.The water soluble starch aqueous solution of 1.5% is made into during use.
2) dry: utilizing through type baking oven at 70 DEG C, be dried to moisture the superfine fiber synthetic leather base cloth after dipping is 18%;
3) buffing: by step 2) dried superfine fiber synthetic leather base cloth successively by three sand paper fineness be 180 orders, 240 orders and 600 object buffing machines carry out buffing;
4) blade coating: by step 3) a blade coating wet polyurethane slurry after gained superfine fiber synthetic leather base cloth buffing, and the thickness controlling wet polyurethane slurry coating is 0.1mm, then serviceability temperature is that wet polyurethane slurry coating solidifies by the steam baking oven of 50 ~ 70 DEG C, and superfine fiber synthetic leather base cloth is formed the wet polyurethane coating with micropore; Described wet polyurethane slurry is: with weight parts, and by wet polyurethane 100 parts, pigment 15 parts, solvent dimethylformamide 100 parts of Homogeneous phase mixing obtain; Wet polyurethane is the special polyurethane industrial product being specifically designed to synthetic leather wet processing, uses the wet method resin HDW-3100 used for artificial leather of Huada Chemical Group Co., Ltd..
Then wash process, concrete operations are: use multiple-grooved tandem rinsing machine to wash, and the content controlling solvent dimethylformamide in last rinsing bowl is lower than 0.5%, then dry process.
5) by step 4) gained superfine fiber synthetic leather base cloth carries out spraying, inhaling line and polishing successively, obtains footwear moisture permeability superfine fiber chemical leather.
The concrete operations of described spraying are: use flush coater to be sprayed on wet polyurethane coating by painting casein finishing agent feed liquid, control quantity for spray is 30g/m
2; Then dry process;
Being coated with casein finishing agent feed liquid is: with weight parts, 100 parts, water, and casein finishing agent 10 parts, crosslinking agent 0.1 part, Homogeneous phase mixing obtains.
Casein finishing agent is the casein and the modified product thereof that are specifically designed to natural leather covering with paint, uses the soft casein emulsion TINGELUSTRE217 of water-based of one of sky, Shenzhen Science and Technology Development Co., Ltd..Crosslinking agent is glutaraldehyde and the glyoxal mixture with 1:1.
The concrete operations of inhaling line are: adopt through type vacuum tattoo machine to inhale line, running parameter is: preheat temperature 175 DEG C, speed of a motor vehicle 2m/min.
The concrete operations of polishing are: adopt through type felt polisher to carry out polishing, polishing roll rotating speed is 350r/min.
According to footwear moisture permeability superfine fiber chemical leather prepared by the method for the invention provides, peel strength is greater than 20 (N/20mm), and surface color xerotripsis fastness is greater than 4.5 grades, and wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200 (ml/cm
2h), water vapor permeability is greater than 1.5 (mg/cm
2h), sanitation performance exceedes the natural leather of coating.
Embodiment 5
A manufacture method for footwear moisture permeability superfine fiber chemical leather, comprising:
1) flood: take superfine fiber chemical leather as base cloth, the water soluble starch aqueous solution of mass fraction 2% is loaded through type dipping tank, dipping superfine fiber synthetic leather base cloth, and control superfine fiber synthetic leather base cloth weightening finish 40% by padding machine water squeezing;
Water soluble starch is the acid hydrolysis thing of starch from sweet potato, and preparation process is that starch from sweet potato crosses 80 order dusting covers, is placed in reactor, adds the hydrochloric acid of 3%, solution is stirred into water gruel shape, soaks 24 hours, drained by supernatant liquor in 45 DEG C; Repeat three times; Finally, with 5% sodium carbonate liquor to be neutralized to pH be 7.0.The water soluble starch aqueous solution of 2% is made into during use.
2) dry: utilizing through type baking oven at 80 DEG C, be dried to moisture the superfine fiber synthetic leather base cloth after dipping is 25%;
3) buffing: by step 2) dried superfine fiber synthetic leather base cloth successively by three sand paper fineness be 180 orders, 240 orders and 600 object buffing machines carry out buffing;
4) blade coating: by step 3) a blade coating wet polyurethane slurry after gained superfine fiber synthetic leather base cloth buffing, and the thickness controlling wet polyurethane slurry coating is 0.2mm, then serviceability temperature is that wet polyurethane slurry coating solidifies by the steam baking oven of 50 ~ 70 DEG C, and superfine fiber synthetic leather base cloth is formed the wet polyurethane coating with micropore; Described wet polyurethane slurry is: with weight parts, and by wet polyurethane 100 parts, pigment 10 parts, solvent dimethylformamide 120 parts of Homogeneous phase mixing obtain; Wet polyurethane is the special polyurethane industrial product being specifically designed to synthetic leather wet processing, uses the wet method resin HDW-3050 used for artificial leather of Huada Chemical Group Co., Ltd..
Then wash process, concrete operations are: use multiple-grooved tandem rinsing machine to wash, and the content controlling solvent dimethylformamide in last rinsing bowl is lower than 0.5%, then dry process.
5) by step 4) gained superfine fiber synthetic leather base cloth carries out spraying, inhaling line and polishing successively, obtains footwear moisture permeability superfine fiber chemical leather.
The concrete operations of described spraying are: use flush coater to be sprayed on wet polyurethane coating by painting casein finishing agent feed liquid, control quantity for spray is 30g/m
2; Then dry process;
Being coated with casein finishing agent feed liquid is: with weight parts, 100 parts, water, and casein finishing agent 10 parts, crosslinking agent 0.1 part, Homogeneous phase mixing obtains.
Casein finishing agent is the casein and the modified product thereof that are specifically designed to natural leather covering with paint, uses soft casein emulsion TINGELUSTRE251 in the water-based of one of sky, Shenzhen Science and Technology Development Co., Ltd..Crosslinking agent is glutaraldehyde.
The concrete operations of inhaling line are: adopt through type vacuum tattoo machine to inhale line, running parameter is: preheat temperature 160 DEG C, speed of a motor vehicle 3m/min.
The concrete operations of polishing are: adopt through type felt polisher to carry out polishing, polishing roll rotating speed is 330r/min.
According to footwear moisture permeability superfine fiber chemical leather prepared by the method for the invention provides, peel strength is greater than 20 (N/20mm), and surface color xerotripsis fastness is greater than 4.5 grades, and wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200 (ml/cm
2h), water vapor permeability is greater than 1.5 (mg/cm
2h), sanitation performance exceedes the natural leather of coating.
Embodiment 6
A manufacture method for footwear moisture permeability superfine fiber chemical leather, comprising:
1) flood: take superfine fiber chemical leather as base cloth, the water soluble starch aqueous solution of mass fraction 1.3% is loaded through type dipping tank, dipping superfine fiber synthetic leather base cloth, and control superfine fiber synthetic leather base cloth weightening finish 55% by padding machine water squeezing;
Water soluble starch is the acid hydrolysis thing of starch from sweet potato, and preparation process is that starch from sweet potato crosses 80 order dusting covers, is placed in reactor, adds the hydrochloric acid of 3%, solution is stirred into water gruel shape, soaks 24 hours, drained by supernatant liquor in 45 DEG C; Repeat three times; Finally, with 5% sodium carbonate liquor to be neutralized to pH be 7.0.The water soluble starch aqueous solution of 1.3% is made into during use.
2) dry: utilizing through type baking oven at 90 DEG C, be dried to moisture the superfine fiber synthetic leather base cloth after dipping is 15%;
3) buffing: by step 2) dried superfine fiber synthetic leather base cloth successively by three sand paper fineness be 180 orders, 240 orders and 600 object buffing machines carry out buffing;
4) blade coating: by step 3) a blade coating wet polyurethane slurry after gained superfine fiber synthetic leather base cloth buffing, and the thickness controlling wet polyurethane slurry coating is 0.15mm, then serviceability temperature is that wet polyurethane slurry coating solidifies by the steam baking oven of 50 ~ 70 DEG C, and superfine fiber synthetic leather base cloth is formed the wet polyurethane coating with micropore; Described wet polyurethane slurry is: with weight parts, and by wet polyurethane 100 parts, pigment 12 parts, solvent dimethylformamide 105 parts of Homogeneous phase mixing obtain; Wet polyurethane is the special polyurethane industrial product being specifically designed to synthetic leather wet processing, uses the wet method resin HDW-3090 used for artificial leather of Huada Chemical Group Co., Ltd..
Then wash process, concrete operations are: use multiple-grooved tandem rinsing machine to wash, and the content controlling solvent dimethylformamide in last rinsing bowl is lower than 0.5%, then dry process.
5) by step 4) gained superfine fiber synthetic leather base cloth carries out spraying, inhaling line and polishing successively, obtains footwear moisture permeability superfine fiber chemical leather.
The concrete operations of described spraying are: use flush coater to be sprayed on wet polyurethane coating by painting casein finishing agent feed liquid, control quantity for spray is 35g/m
2; Then dry process;
Being coated with casein finishing agent feed liquid is: with weight parts, 100 parts, water, and casein finishing agent 7 parts, crosslinking agent 0.15 part, Homogeneous phase mixing obtains.
Casein finishing agent is the casein and the modified product thereof that are specifically designed to natural leather covering with paint, uses the soft casein emulsion TINGELUSTRE217 of water-based of one of sky, Shenzhen Science and Technology Development Co., Ltd..Crosslinking agent is glutaraldehyde, the mixture of 1:5 both glyoxal.
The concrete operations of inhaling line are: adopt through type vacuum tattoo machine to inhale line, running parameter is: preheat temperature 170 DEG C, speed of a motor vehicle 2m/min.
The concrete operations of polishing are: adopt through type felt polisher to carry out polishing, polishing roll rotating speed is 300 ~ 350r/min.
According to footwear moisture permeability superfine fiber chemical leather prepared by this method, peel strength is greater than 20 (N/20mm), and surface color xerotripsis fastness is greater than 4.5 grades, and wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200 (ml/cm
2h), water vapor permeability is greater than 1.5 (mg/cm
2h), sanitation performance exceedes the natural leather of coating.
Claims (8)
1. a footwear moisture permeability superfine fiber chemical leather, is characterized in that, prepare by the following method, said method comprising the steps of:
1) flood: take superfine fiber synthetic leather base cloth as base material, service property (quality) mark is the water soluble starch aqueous impregnation of 1 ~ 2%, and control superfine fiber synthetic leather base cloth weightening finish 40 ~ 60%;
2) dry: it is 15 ~ 25% that the superfine fiber synthetic leather base cloth after dipping is dried to moisture at 60 ~ 90 DEG C;
3) buffing: by step 2) dried superfine fiber synthetic leather base cloth carries out buffing process;
4) blade coating: by step 3) a blade coating wet polyurethane slurry after gained superfine fiber synthetic leather base cloth buffing, and the thickness controlling wet polyurethane slurry coating is 0.1 ~ 0.2mm, then solidifies; Described wet polyurethane slurry is: with weight parts, and by wet polyurethane 100 parts, pigment 10 ~ 15 parts, solvent dimethylformamide 100 ~ 120 parts of Homogeneous phase mixing obtain;
5) spraying, inhale line and polishing: by step 4) superfine fiber synthetic leather base cloth after gained blade coating carries out spraying, inhaling line and polishing successively, obtain footwear moisture permeability superfine fiber chemical leather, the peel strength of obtained footwear moisture permeability superfine fiber chemical leather is greater than 20N/20mm, surface color xerotripsis fastness is greater than 4.5 grades, wet rubbing fastness is greater than 4 grades, and gas permeability is greater than 1200ml/cm
2h, water vapor permeability is greater than 1.5mg/cm
2h.
2. a kind of footwear moisture permeability superfine fiber chemical leather according to claim 1, is characterized in that, step 1) described water soluble starch is the acid hydrolysis thing of starch from sweet potato.
3. a kind of footwear moisture permeability superfine fiber chemical leather according to claim 1, it is characterized in that, step 3) concrete operations of described buffing are: by dried superfine fiber synthetic leather base cloth successively by three sand paper fineness be 180 orders, 240 orders and 600 object buffing machines carry out buffing.
4. a kind of footwear moisture permeability superfine fiber chemical leather according to claim 1, is characterized in that, described step 4) concrete operations of solidifying are: use steam baking oven to be solidified by wet polyurethane slurry coating at 50 ~ 70 DEG C.
5. a kind of footwear moisture permeability superfine fiber chemical leather according to claim 1 or 4, it is characterized in that, described step 4) superfine fiber synthetic leather base cloth of gained also carries out washing process after blade coating, concrete operations are: use multiple-grooved tandem rinsing machine to wash, and the content controlling solvent dimethylformamide in last rinsing bowl is lower than 0.5%, then dry process.
6. a kind of footwear moisture permeability superfine fiber chemical leather according to claim 1, it is characterized in that, step 5) concrete operations of described spraying are: use flush coater to be sprayed on wet polyurethane coating by painting casein finishing agent feed liquid, control quantity for spray is 25 ~ 35g/m
2; Then dry process;
Described painting casein finishing agent feed liquid is: with weight parts, 100 parts, water, casein finishing agent 5 ~ 10 parts, crosslinking agent 0.1 ~ 0.2 part, and Homogeneous phase mixing obtains.
7. a kind of footwear moisture permeability superfine fiber chemical leather according to claim 1, it is characterized in that, step 5) concrete operations of described suction line are: adopt through type vacuum tattoo machine to inhale line, running parameter is: preheat temperature 160 ~ 180 DEG C, the speed of a motor vehicle 2 ~ 4m/min.
8. a kind of footwear moisture permeability superfine fiber chemical leather according to claim 1, is characterized in that, step 5) concrete operations of described polishing are: adopt through type felt polisher to carry out polishing, polishing roll rotating speed is 300 ~ 350r/min.
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