CN102182015B - Method for producing artificial leather base material by compounding collagen fibers by utilizing spun-laced water jetting - Google Patents
Method for producing artificial leather base material by compounding collagen fibers by utilizing spun-laced water jetting Download PDFInfo
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Abstract
At present, the synthetic leathers are made of artificial fibers, and due to the performance difference between the artificial fibers and real leather collagen fibers, the performances of the artificial leathers are greatly different from the performances of the real leathers. The existing reclaimed leathers have harder handfeel and the environment is polluted in the production processes of the reclaimed leathers. The invention provides a method for producing an artificial leather base material by compounding collagen fibers by utilizing spun-laced water jetting. The method comprises the following steps: 1) firstly preparing the collagen fibers into a collagen fiber sheet for compounding by utilizing spun-laced water jetting; and 2) opening and entangling the collagen fiber sheet by utilizing spun-laced water jetting in a spun-laced nonwoven process, at the same time, compounding the collagen fiber sheet with an opened and carded synthetic fiber sheet, and after compounding, implanting the synthetic fibers in the collagen fibers so that the two different fiber sheets are firmly bonded as a whole. The method has the following beneficial effects: after undergoing the subsequent coating processing, the obtained base material has stronger leather feel and better simulation than the traditional synthetic leathers and softer handfeel than the reclaimed leathers; and the method is more environment-friendly than the traditional production methods of the reclaimed leathers.
Description
Technical field
The present invention relates to the processing technology of artificial leather, specifically a kind of water thorn jet of spunlace non-woven technique that utilizes is combined into collagenous fiber network and plastic wire the method for artificial leather base material.
Background technology
At present, on market, popular leather and fur products has corium and the large class of dermatine two.Corium is to adopt the Animal Skin such as ox, sheep to make through complicated tannery.The tanning of leather is exactly with tannin, the protein of intracutaneous to be carried out chemistry and Physical Processing, it passes through series of process, and adopt some chemical agents, and make the protein in the animal hides such as ox, pig, sheep that a series of variations occur, make collagen generation denaturation.Tanned leather is both soft, firm, wear-resisting again, is not easy putrid and deteriorated.So tanned leather can be used to make the daily living article of various leathers.And synthetic leather and artificial leather are by woven fabric base or nonwoven fabric base, are coated with redoubling with polyurethane respectively and adopt special foaming processing to make, and have surperficial feel to exactly like corium, but gas permeability, ABRASION RESISTANCE, cold resistance all are not so good as corium.
Woven fabric base or nonwoven fabric base all adopt the synthetic fiber such as terylene, polyamide fibre (nylon), are processed into through weaving or non-woven operation.The synthetic leather that adopts artificial fiber to make, the difference due to artificial fiber itself and dermal collagen fibre property makes the performance of artificial leather and corium also have very big-difference.But the quantity of corium is limited on the one hand, brings environmental pollution in the corium process on the other hand, also brings a large amount of tailings simultaneously.Mainly to produce regenerated bark to the recycling of these tailings at present.Regenerative leather technique is first corium fabric, cross filament, resin to be mixed with other auxiliary agent, its technological process is: the hide fiber that corium or regenerated leather raw meal is broken into certain size, and then it is mixed with natural rubber, resin and other raw material, afterwards it is compressed into filter cake; With the filter cake heating, make the fiber fusing on its top layer have stickiness, with each layer extruding, bonding, dehydration forming, obtain final products after airing, section, embossing and surface treatment.Existing regenerated bark is due to the restriction of production technology, and the product feel is harder, and production process produces environment to be polluted.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defective that above-mentioned prior art exists, provide a kind of water thorn jet of spunlace non-woven technique that utilizes collagenous fiber network and plastic wire to be combined into the method for artificial leather base material, to solve conventional regeneration skin Boardy Feeling, kishke feel is poor, production process is polluted problem, solve the poor problem of traditional synthetic leather emulation.
For this reason, the technical solution used in the present invention is as follows: a kind of method of producing artificial leather base material by compounding collagen fibers by utilizing spun-laced water jetting, and its step is as follows: the collagenous fiber network of 1) first collagenous fibres being made the compound use of thorn jet that supplies water; 2) utilize the water thorn jet of spunlace non-woven technique that collagenous fiber network is opened fibre and entanglement, simultaneously, itself and plastic wire through the shredding combing are carried out compound, compound after, synthetic fiber are implanted in collagenous fibres, and two kinds of different fiber webs are combined as a whole securely.
The one side of base material of the present invention is the collagenous fibres that tangle through water thorn High-Pressure Water, after the processing such as follow-up sanding, has played leather effect; Another side is the synthetic fiber layer as framework material; Both sting the entanglement effect of jet through water and be combined as a whole.The base material that the present invention makes again through follow-up polyurethane coating, embossing, rub the artificial skin that operation can form and corium has same feel, air permeability, physical property such as line, can be widely used in sofa, case and bag, clothes, footwear etc.
The method of above-mentioned producing artificial leather base material by compounding collagen fibers by utilizing spun-laced water jetting, the detailed process of the first step is followed successively by:
The collagenous fibres shredding is become collagenous fiber bundle, and collagenous fiber bundle is mixed, the speed of opening roller is 1500-2100 rev/min;
Apply antistatic additive to collagenous fiber bundle, reduce the static of collagenous fibres, improve the problems such as curling round the roll, sticky net of carding process, the consumption of antistatic additive is the 1-2% of collagenous fibres weight;
Poor because of the collagenous fibres regularity, difference in fiber fineness is large, easily reduce the speed of carding machine, collagenous fiber bundle is carded to single state, form uniform collagenous fiber network, carding machine goes out net spee and is controlled at 30-50 m/min, and cylinder speed is controlled at 420-500 m/min, and doffer's linear velocity is controlled at 25-45 m/min, working roll speed is controlled at 40-60 m/min, and card stripper speed is controlled at 90-120 m/min;
Collagenous fiber network after combing becomes mixed and disorderly arrangement by the effect of air-flow, and forms the collagenous fiber network of higher grammes per square metre.In the air lay process, to control center line and the horizontal line of carrying the air channel and be 30 degree to 40 degree, the flow velocity in airflow line is 10-20m/s, flow velocity is 2.5-3.5 times of doffer's linear velocity; Grammes per square metre is controlled at 200-300 g/m, and the speed of air lay is at 10-15 m/min;
At the online spray adhesive of collagenous fibres, to increase the intensity of collagenous fibres felt, the concentration of adhesive is 3-5%, and the pressure of spray adhesive is 0.5-1bar, and with described adhesive dry solidification, dry temperature is the 150-200 degree;
Utilize hot rolling with the THICKNESS CONTROL of collagenous fiber network at 2-4mm, the cylinder pressure 5-6bar of hot rolling, temperature is the 160-220 degree, so that follow-up compound processing forms the collagenous fibres volume at last.
The method of above-mentioned producing artificial leather base material by compounding collagen fibers by utilizing spun-laced water jetting, in second step, described synthetic fiber are selected nylon fibre or polyster fibre, adopt bale opener to send into polyamide fibre or polyster fibre, justify with the plastic wire of aforementioned formation that bulging water thorn jet is compound after then unreeling through twice shredding, the mixing of many storehouses, carding, cross lapping, multiple roll drawing-off, collagenous fibres volume successively, finishing functions, hot blast penetrate oven dry, rolling, the spunlace non-woven technological process of cutting.
In above-mentioned spunlace non-woven technique, the fineness of the synthetic fiber such as polyamide fibre or polyster fibre is that 1.5-2 Denier (D), length are 38-51mm; When mixing, the shredding of synthetic fiber or many storehouses add the antistatic additive mixed liquor of total weight of fiber 5-10%, described antistatic additive mixed liquor is that the antistatic additive of 2-3% and water that mass percent is 97-98% form by mass percent, to improve the carding effect of fiber; The technological condition of carding machine is: fibre web grammes per square metre 21-25 gram/m
2, main cylinder linear velocity 900-1110m/min, main cylinder working roll speed 80-110 m/min, main cylinder card stripper linear velocity 200-210m/min; The technological condition of lapping machine: lapping number of plies 6-8 layer; The drafting multiple of drawing machine is 1.2 times-2.5 times; The compound technological condition with spun-laced machine of water thorn: water jet quantity is 4-6, and pressure is respectively 20-50,100-120,130-150,130-150,140-160,140-150b bar; Bake out temperature 170-190 ℃.
The beneficial effect that the present invention has:
1, the leather effect of high emulation, base material be again through after the processing of follow-up coating, back exposure be collagenous fibres, stronger than traditional synthetic leather skin sense, good simulation has more soft feel than regenerated bark.
2, than traditional regenerated bark production method environmental protection.Traditional regenerated bark will add a lot of solvent type adhesives, and toxicity is large, easily contaminated environment.
The invention will be further described below in conjunction with the specific embodiment.
The specific embodiment
Embodiment 1:
1) collagenous fibres are sent into the opener shredding and become collagenous fiber bundle, and collagenous fiber bundle is mixed, the speed of opening roller is 1650 rev/mins;
Apply antistatic additive to collagenous fiber bundle, reduce the static of collagenous fibres, improve the problems such as curling round the roll, sticky net of carding process, the consumption of antistatic additive is 1.2% of collagenous fibres weight;
Collagenous fiber bundle is carded to single state, form uniform collagenous fiber network, carding machine goes out net spee and is controlled at 32 m/mins, cylinder speed is controlled at 440 m/mins, doffer's linear velocity is controlled at 28 m/mins, working roll speed is controlled at 43 m/mins, and card stripper speed is controlled at 110 m/mins;
Collagenous fiber network after combing becomes mixed and disorderly arrangement by the effect of air-flow, and forms the collagenous fiber network of higher grammes per square metre.In the air lay process, to control center line and the horizontal line of carrying the air channel and be 33 degree, the flow velocity in airflow line is 13m/s, flow velocity is 2.6 times of doffer's linear velocity; Grammes per square metre is controlled at 220 g/ms, and the speed of air lay is at 12.5 m/mins;
Spray acrylic resin adhesive on the net at collagenous fibres, to increase the intensity of collagenous fibres felt, the concentration of adhesive is 3.5%, and the pressure of spray adhesive is 0.6bar, and with described adhesive dry solidification, dry temperature is 160 degree;
Utilize hot rolling with the THICKNESS CONTROL of collagenous fiber network at 2.5mm, the cylinder pressure 5.5bar of hot rolling, temperature is 180 degree, so that follow-up compound processing forms the collagenous fibres volume at last.
2) adopt bale opener to send into polyster fibre, justify with the plastic wire of aforementioned formation that bulging water thorn jet is compound, hot blast penetrates oven dry after then unreeling through twice shredding, the mixing of many storehouses, carding, cross lapping, multiple roll drawing-off, collagenous fibres volume successively, rolling, the spunlace non-woven technological process of cutting.
In above-mentioned spunlace non-woven technique, the fineness of polyster fibre is that 1.5 Denier (D), length are 38mm; When mixing, the shredding of synthetic fiber or many storehouses add the antistatic additive mixed liquor of total weight of fiber 5.5%, described antistatic additive mixed liquor is that 2.2% antistatic additive and mass percent are that 97.8% water forms by mass percent, to improve the carding effect of fiber; The technological condition of carding machine is: fibre web grammes per square metre 22.5 grams/m2, main cylinder linear velocity 980m/min, main cylinder working roll speed 88m/min, main cylinder card stripper linear velocity 200m/min; The technological condition of lapping machine: 6 layers of the lapping numbers of plies; The drafting multiple of drawing machine is 1.5 times; The compound technological condition with spun-laced machine of water thorn: water jet quantity is 5, and pressure is respectively 30,110,130,140,150,145bar; 180 ℃ of bake out temperatures.Form at last the combined artificial leather base material (abbreviation base material) that collagenous fibres 210 grams, nylon fibre 70 grams amount to 280 grams.
Embodiment 2:
1) collagenous fibres are sent into the opener shredding and become collagenous fiber bundle, and collagenous fiber bundle is mixed, the speed of opening roller is 1900 rev/mins;
Apply antistatic additive to collagenous fiber bundle, reduce the static of collagenous fibres, improve the problems such as curling round the roll, sticky net of carding process, the consumption of antistatic additive is 2% of collagenous fibres weight;
Poor because of the collagenous fibres regularity, difference in fiber fineness is large, easily reduce the speed of carding machine, collagenous fiber bundle is carded to single state, form uniform collagenous fiber network, go out net spee and be controlled at 48 m/mins, cylinder speed is controlled at 480 m/mins, and doffer's linear velocity is controlled at 35 m/mins, working roll speed is controlled at 52 m/mins, and card stripper speed is controlled at 110 m/mins;
Collagenous fiber network after combing becomes mixed and disorderly arrangement by the effect of air-flow, and forms the collagenous fiber network of higher grammes per square metre.In the air lay process, to control center line and the horizontal line of carrying the air channel and be 38 degree, the flow velocity in airflow line is 8m/s, flow velocity is 2.8 times of doffer's linear velocity.Grammes per square metre is controlled at 280 g/ms, and the speed of air lay is at 14 m/mins;
Spray acrylic resin adhesive on the net at collagenous fibres, to increase the intensity of collagenous fibres felt, the concentration of adhesive is 4.8%, and the pressure of spray adhesive is 0.9bar, and with described adhesive dry solidification, dry temperature is 190 degree;
Utilize hot rolling with the THICKNESS CONTROL of collagenous fiber network at 3.2mm, the cylinder pressure 5.8bar of hot rolling, temperature is 215 degree, forms the collagenous fibres volume.
2) adopt bale opener to send into nylon fibre, justify with the plastic wire of aforementioned formation that bulging water thorn jet is compound after then unreeling through twice shredding, the mixing of many storehouses, carding, cross lapping, multiple roll drawing-off, collagenous fibres volume successively, finishing functions, hot blast penetrate oven dry, rolling, the spunlace non-woven technological process of cutting.
In above-mentioned spunlace non-woven technique, the fineness of nylon fibre is that 2 Denier (D), length are 51mm; Add the antistatic additive mixed liquor of total weight of fiber 8% when mix in the shredding of synthetic fiber or many storehouses, described antistatic additive mixed liquor is that 3% antistatic additive and mass percent are that 97% water forms by mass percent, to improve the carding effect of fiber; The technological condition of carding machine is: fibre web grammes per square metre 25 grams/m2, main cylinder linear velocity 1100m/min, main cylinder working roll speed 110 m/min, main cylinder card stripper linear velocity 210m/min; The technological condition of lapping machine: 8 layers of the lapping numbers of plies; The drafting multiple of drawing machine is 2 times; The compound technological condition with spun-laced machine of water thorn: water jet quantity is 6, and pressure is respectively 40,110,135,145,155,150b bar; 190 ℃ of bake out temperatures.Form at last the combined artificial leather substrate that collagenous fibres 260 grams, nylon fibre 100 grams amount to 360 grams.
Claims (3)
1. the method for a producing artificial leather base material by compounding collagen fibers by utilizing spun-laced water jetting, its step is as follows: the collagenous fiber network of 1) first collagenous fibres being made the compound use of thorn jet that supplies water; 2) utilize the water thorn jet of spunlace non-woven technique that collagenous fiber network is opened fibre and entanglement, simultaneously, itself and plastic wire through the shredding combing are carried out compound, compound after, synthetic fiber are implanted in collagenous fibres, and two kinds of different fiber webs are combined as a whole securely;
The detailed process of the first step is followed successively by: the collagenous fibres shredding is become collagenous fiber bundle, and collagenous fiber bundle is mixed; Apply antistatic additive to collagenous fiber bundle, the consumption of antistatic additive is the 1-2% of collagenous fibres weight; Collagenous fiber bundle is carded to single state, forms uniform collagenous fiber network, the collagenous fiber network after combing becomes mixed and disorderly arrangement by the effect of air-flow, and forms the collagenous fiber network of higher grammes per square metre, and grammes per square metre is controlled at 200-300 g/m; At the online spray adhesive of collagenous fibres, and described adhesive is solidified; Utilize hot rolling with the THICKNESS CONTROL of collagenous fiber network at 2-4mm, form at last the collagenous fibres volume.
2. the method for producing artificial leather base material by compounding collagen fibers by utilizing spun-laced water jetting according to claim 1, it is characterized in that, in second step, described synthetic fiber are selected polyamide fibre or polyster fibre, adopt bale opener to send into polyamide fibre or polyster fibre, justify with the plastic wire of aforementioned formation that bulging water thorn jet is compound after then unreeling through twice shredding, the mixing of many storehouses, carding, cross lapping, multiple roll drawing-off, collagenous fibres volume successively, finishing functions, hot blast penetrate oven dry, rolling, the spunlace non-woven technological process of cutting.
3. the method for producing artificial leather base material by compounding collagen fibers by utilizing spun-laced water jetting according to claim 2, it is characterized in that, add the antistatic additive mixed liquor of total weight of fiber 5-10% when mix in the shredding of synthetic fiber or many storehouses, described antistatic additive mixed liquor is that the antistatic additive of 2-3% and water that mass percent is 97-98% form by mass percent.
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| IT202000006949A1 (en) * | 2020-04-02 | 2021-10-02 | Re Leather S R L | ARTIFACT IN RECYCLED LEATHER AND ITS MANUFACTURING METHOD |
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