CN103192556A - Preparation method of uniform high-performance leather base fabrics - Google Patents
Preparation method of uniform high-performance leather base fabrics Download PDFInfo
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- CN103192556A CN103192556A CN2013101124882A CN201310112488A CN103192556A CN 103192556 A CN103192556 A CN 103192556A CN 2013101124882 A CN2013101124882 A CN 2013101124882A CN 201310112488 A CN201310112488 A CN 201310112488A CN 103192556 A CN103192556 A CN 103192556A
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- 239000004744 fabric Substances 0.000 title claims abstract description 124
- 239000010985 leather Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 53
- 238000001467 acupuncture Methods 0.000 claims abstract description 31
- 229920000728 polyester Polymers 0.000 claims abstract description 26
- 238000009960 carding Methods 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000005098 hot rolling Methods 0.000 claims abstract description 5
- 238000009941 weaving Methods 0.000 claims description 19
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- 229920004933 Terylene® Polymers 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 9
- 229920004934 Dacron® Polymers 0.000 claims description 3
- 239000002759 woven fabric Substances 0.000 abstract description 10
- 230000002787 reinforcement Effects 0.000 abstract description 5
- 239000004745 nonwoven fabric Substances 0.000 abstract 5
- 239000002649 leather substitute Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000004880 explosion Methods 0.000 description 7
- 230000000704 physical effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 206010058109 Hangnail Diseases 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Nonwoven Fabrics (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The invention discloses a preparation method of uniform high-performance leather base fabrics, which comprises the following steps of: (1) preparing a nonwoven fabric layer: the nonwoven fabric layer is prepared by taking 70-100 wt % of regenerated polyester fiber and 0-30 wt % of maximized polyester short-fiber as raw materials through opening and mixing, web forming through carding, web paving, and two acupunctures; the linear density of the regenerated polyester fiber is 1.5-6D, and the fiber length is 38-51mm; and the linear density of the maximized polyester short-fiber is 1.0-2.5D, and the fiber length is 51-76mm; (2) compositing the prepared nonwoven fabric layer with a machine-woven fabric layer: the machine-woven fabric layer is selected, and connected and composited with the nonwoven fabric layer prepared in the step (1); and the machine-woven fabric layer is prepared by using polyester silk, the warp density is 70-85 roots/in, and the weft density is 40-55 roots/in; and (3) carrying out reinforcement and hot rolling processing. According to the invention, through combining a characteristic that the vertical and horizontal strength ratio of a nonwoven fabric is large and the vertical and horizontal strength ratio of a machine-woven fabric is small, the prepared leather base fabric has the unique styles of the two, and uniform vertical and horizontal breaking strengths.
Description
Technical field
The present invention relates to remove from office the base cloth field, relate to a kind of preparation method of even high-performance leather base cloth in particular, its leather base cloth of making have in length and breadth to tear powerful than be 1: 1.1 with interior, force of explosion is high, smooth surface and the good characteristics of stiffness.
Background technology
Synthetic leather is made, one of key that the requirement synthetic leather has individual style and excellent properties is the selection of base cloth, base cloth excellent performance and stability all have important function to final finished brute force, stability, and it is good in length and breadth to powerful and solution impregnability that it requires base cloth to have.
Present woven cloth, looped fabric and non-weaving cloth all can reach these requirements, can both make base cloth and use.But non-weaving cloth is by the random arrangement of fiber, and the bonding of its fibrous mechanical property and solution impregnability, fiber and resin all is better than the above two, and the synthetic leather structure that the employing non-weaving cloth is made is also more close to natural leather.Non-weaving cloth is as a kind of new material, because it has 3-D solid structure, with its base cloth as synthetic leather, not only outward appearance is good to make synthetic leather, and at aspects such as feel, gas permeability, brute forces more near natural leather.The important branch that the needling non-woven base cloth becomes synthetic leather base cloth with its good simulation performance, superior physical characteristic and lower production cost.
The characteristic of natural leather is isotropism, synthetic leather base cloth is the base layer structure of imitation natural leather, needle fabric as synthetic leather base cloth, the woven relatively cloth of its physical property such as ultimate strength, elongation at break and looped fabric are lower, and in length and breadth to large percentage, so still can't satisfy the requirement of high-grade leather base cloth.In general, the leather base cloth is normally powerful than being 1 to tearing in length and breadth on the market: in the 1.3-2.0 scope.
Summary of the invention
Main purpose of the present invention is to provide a kind of preparation method of even high-performance leather base cloth, and it makes the powerful than in 1: 1.1 scope to tearing in length and breadth of leather base cloth.
In order to reach above-mentioned purpose, solution of the present invention is:
A kind of preparation method of even high-performance leather base cloth wherein, comprises the steps:
1. prepare nonwoven layer: this nonwoven layer is raw material with the Regenerated Polyester Fibres of 70-100wt% and the bigization terylene short fiber of 0-30wt%, forms nonwoven layer after mixing shredding, carding, lapping and twice acupuncture; The line density of this Regenerated Polyester Fibres is 1.5-6D, and fibre length is 38-51mm; The line density that is somebody's turn to do bigization terylene short fiber is 1.0-2.5D, and fibre length is 51-76mm;
2. the nonwoven layer and the woven layer of cloth that make is compound: as to choose woven layer of cloth, and the nonwoven layer that 1. itself and step make is linked to each other by needling process is compound; This woven layer of cloth adopts dacron thread to make, its through close be 70-85 root/in, filling density 40-55 root/in;
3. reinforce and hot rolling is handled, with form in length and breadth to tear powerful ratio at 1: 1.1 with interior leather base cloth.
Further, the Regenerated Polyester Fibres of the 70-100wt% of this step in 1. adopts 2.0D * 51mm Regenerated Polyester Fibres of 20-90wt% and 3.5D * 51mm Regenerated Polyester Fibres of 10-50wt%, and this bigization terylene short fiber adopts 1.5D * 64mm.
Further, the first road punch frequency and the degree of depth are respectively 550-650r/min, 13-15mm in the twice acupuncture of this step in 1., and the second road punch frequency and the degree of depth are respectively 700-800r/min, 8-10mm.
Further, the needling process of this step in 2. is to adopt to be positioned at nonwoven layer and to add the 3rd road acupuncture after road acupuncture in man-hour first and the second road acupuncture, and the punch frequency of the 3rd road acupuncture and depth of needling are respectively 750-850r/min, 8-9mm.
Further, the needling process of this step in 2. also comprises the 4th road acupuncture and the 5th road acupuncture, and the punch frequency of the 4th road acupuncture and depth of needling are respectively 800-900r/min, 6-8mm; The punch frequency of the 5th road acupuncture and depth of needling are respectively 850-950r/min, 3-6mm.
Further, this woven layer of cloth compound to the non-weaving cloth before also through the steam heat typing.
After adopting said structure, the present invention relates to a kind of preparation method of even high-performance leather base cloth, it takes full advantage of woven cloth in length and breadth to brute force bigger performance and good mixed and disorderly uniformity and the fibre matting performance of non-weaving cloth, again by the pinprick reinforcement mode can so that fibre-coated on woven fabric.
So, it is powerful more powerful than little characteristics to tearing in length and breadth than big and woven cloth to tearing in length and breadth that the present invention combines non-weaving cloth, make obtained leather base cloth have both individual styles and uniformly in length and breadth to tearing brute force, can guarantee to be in 1: 1.1 to ultimate strength with the elongation at break ratio in length and breadth, style of the present invention also has the whole soft and good telescopicing performance of the smooth effect of woven fabric, positive stiffening style and non-weaving cloth concurrently in addition.
Simultaneously because it is after forming non-weaving cloth, adopt the mode of acupuncture to add this woven cloth, so can guarantee that not only non-weaving cloth has good physical property, and be conducive to good combination between non-weaving cloth and the woven cloth, do not damage the fabric strength of woven cloth, form good cloth style.
Description of drawings
Fig. 1 is the structural representation that the present invention relates to a kind of made finished leather base cloth of preparation method of even high-performance leather base cloth.
Among the figure:
Nonwoven layer-100; Woven layer of cloth-200.
The specific embodiment
In order further to explain technical scheme of the present invention, the present invention will be described in detail below by specific embodiment.
As shown in Figure 1, it is the prepared leather base cloth of preparation method of a kind of even high-performance leather base cloth that the present invention relates to, this leather base cloth comprises nonwoven layer 100 and woven layer of cloth 200, this woven layer of cloth 200 is compounded on the nonwoven layer 100 by needling process, and this leather base cloth is powerful in 1: 1.1 to tearing in length and breadth.Preferably, this leather base cloth also comprises reinforcing and hot rolling processing after by needling process woven layer of cloth 200 being compounded in nonwoven layer 100, so that connect more firm between the two.
The preparation method of a kind of even high-performance leather base cloth that the present invention relates to comprises the steps:
1. prepare nonwoven layer: this nonwoven layer is raw material with the Regenerated Polyester Fibres of 70-100wt% and the bigization terylene short fiber of 0-30wt%, forms nonwoven layer after mixing shredding, carding, lapping and twice acupuncture; The line density of this Regenerated Polyester Fibres is 1.5-6D, and fibre length is 38-51mm; The line density that is somebody's turn to do bigization terylene short fiber is 1.0-2.5D, and fibre length is 51-76mm.
For shredding and mixed processes: above-mentioned Regenerated Polyester Fibres and bigization terylene short fiber are carried out abundant shredding and mixed, it is mixed.In order to improve mixed effect, adopt the mode manually mix cotton and under certain humiture, carry out damping in advance, and can reduce fibre damage, improve fibre cohesion, opener equipment can adopt the automatic type type bale opener of weighing.
For feeding operation: the mixed Regenerated Polyester Fibres of shredding and bigization terylene short fiber are adopted vibration hopper or air pressure hopper or both combinations, this can guarantee that cellucotton net is evenly distributed, and be not subjected to the influence of fibre property and external condition, then under the automatic adjustment of skin curtain electronic scale, weight and the speed of control feeding fiber, making fiber feeding linear speed is 0.5-2.5m/min, the feeding fibre weight is the 1-4 Kilograms Per Square Meter, under the effect of skin curtain electronic scale, can improve fiber uniformity and carding effect everywhere greatly.
For the combing operation: by carding machine the fiber of feeding is carried out sufficient combing, obtain uniform fibre web.The main cylinder rotating speed of carding machine is 800-900r/min, and indoor temperature is controlled at 15-30 ℃, and relative humidity is controlled at 50-80%, and it adopts double cylinder and double doffer combing mode, has improved carding effect and output.
For the lapping operation be: the fiber that obtains through combing is carried out repeatedly and overlapping its grammes per square metre that makes of keeping necessarily spacing reaches the 220-270 Kilograms Per Square Meter, adopt cross lapping machine, adjustment by what clothes motor program, can change the speed of each dolly, make fibre web be evenly distributed, avoid thick middle, the situation that both sides are thin reduces the fibre web irregularity.
2. the nonwoven layer and the woven layer of cloth that make is compound: as to choose woven layer of cloth, and the nonwoven layer that 1. itself and step make is linked to each other by needling process is compound; This woven layer of cloth adopts dacron thread to make, its through close be 70-85 root/in, filling density 40-55 root/in;
3. reinforce and hot rolling is handled, with form in length and breadth to tear powerful ratio at 1: 1.1 with interior leather base cloth.
More specifically, the Regenerated Polyester Fibres of this 70-100wt% can adopt 2.0D * 51mm Regenerated Polyester Fibres of 20-90wt% and 3.5D * 51mm Regenerated Polyester Fibres of 10-50wt%, and this bigization terylene short fiber adopts 1.5D * 64mm.
Like this, the present invention relates to a kind of preparation method of even high-performance leather base cloth, it takes full advantage of woven cloth in length and breadth to brute force bigger performance and good mixed and disorderly uniformity and the fibre matting performance of non-weaving cloth, again by the pinprick reinforcement mode can so that fibre-coated on woven fabric.
So, the present invention combine non-weaving cloth in length and breadth to brute force than big and woven cloth in length and breadth to brute force than little characteristics, make obtained leather base cloth have both individual styles and uniformly in length and breadth to tearing brute force, specifically be line density and the length by reasonably selecting non-weaving cloth, cooperate to go up again woven cloth through filling density, so can guarantee in length and breadth to tearing powerfully between 1 to 1: 1.1, style of the present invention also has the whole soft and good telescopicing performance of the smooth effect of woven fabric, positive stiffening style and non-weaving cloth concurrently in addition.
Preferably, this woven layer of cloth 200 compound to the non-weaving cloth before also through the steam heat typing.So can reduce woven cloth and needle fabric between contraction in the recombination process.
Below by specific embodiment the present invention is set forth again:
Embodiment one
The preparation method of a kind of even high-performance leather base cloth that the present invention relates to is raw material with the Regenerated Polyester Fibres of 85wt% and the bigization terylene short fiber of 15wt%.Wherein, the fineness of Regenerated Polyester Fibres is 2.5D, and fibre length is 51mm, and the fineness of changing terylene short fiber greatly is 1.5D, and fibre length is 51mm.Woven cloth through close be 65-75 root/in, filling density is 37-40 root/in.
During production, at first fibrous raw material is carried out shredding and mixes, again by the fiber feeding system, vibration hopper or air pressure hopper or both send fiber into the combing system in conjunction with hopper, through carding, and by the lapping machine overlap onto repeatedly the required number of plies or grammes per square metre 250-270 gram/square metre.Prepare even high-performance leather base cloth by 5 needing machines, 9 needle plate needing machines.
Again with fibre web by hangnail, just sting and begin to take shape fibrofelt.The first road punch frequency and the degree of depth are respectively 550-600r/min, 13-15mm, and the second road punch frequency and the degree of depth are respectively 770-850r/min, 8-9mm.Treat that fleece just adds above-mentioned woven cloth behind the one-step forming.Select the 3rd road acupuncture to add woven cloth, can guarantee that not only fibrofelt has good physical property, and because the first one-step forming of fibrofelt is conducive to both combinations, form good physical property and cloth style.Add the cloth structure and preferably adopt the expanding device, can guarantee the smooth feeding of woven cloth, avoid removing from office base cloth and the discounting phenomenon occurs, and reduce and shrink.
The 3rd road acupuncture complex machining process guarantees the good combination between non-weaving cloth and the woven cloth, and does not damage woven cloth brute force, and can form good cloth style.The 3rd road punch frequency and depth of needling are respectively 750-850r/min, 8-9mm.The moulding of preceding twice fibrofelt has important function to the back synthetic leather.Particularly, the fibre web after the lapping is carried out pinprick reinforcement, pre-thorn adopts the hangnail form, reinforce acupuncture to form the needling fiber felt by last thorn mode again, in its process, guarantee that fibrofelt is fluffy and have certain brute force, be beneficial to the carrying out of later process.The 3rd road and the 4th procedure are reinforcement effect, improve the applying power of fibrofelt (being non-weaving cloth) and woven cloth, and punch frequency and depth of needling are respectively 750-850r/min, 7-9mm, and 800-900r/min, 6-8mm.The 5th road acupuncture is dystopy to thorn, adopts high punch frequency, low depth of needling, and it is played the effect of having a shave, and punch frequency and the depth of needling of the 5th road acupuncture are respectively 850-950r/min, and 3-6mm guarantees the special surperficial style of leather base cloth.
After tested, record leather base cloth grammes per square metre and be 250 grams/square metre, thickness is 0.9mm, longitudinal tear brute force be 74-76N/3cm, laterally tearing brute force is 76-78N/3cm, be 1 to the brute force ratio in length and breadth: 1-1.05, the explosion brute force is 15kgf/cm
2Compare the leather base cloth performance that leather base cloth production company produces on the market---the powerful 45-550N/5cm of being of longitudinal tear, laterally brute force is 50-60N/5cm, and the explosion brute force is 12kgf/cm
2
As can be known: be promoted to 1.03 (mean values) to tearing powerful uniformity from 1.1 in length and breadth,, it has powerfully had raising by a relatively large margin to tearing in length and breadth, is about 30-40%.The explosion brute force has improved nearly 25%.
Embodiment two
A kind of even high-performance leather base cloth that the present invention relates to, the Regenerated Polyester Fibres 2.0D with 85% * 51mm and Regenerated Polyester Fibres 3.5D * 51mm of 15% are raw material, woven cloth through close be 75-85 root/in, filling density is 40-45 root/in.
During production, at first fibrous raw material is carried out shredding and mixes, again by the fiber feeding system, vibration hopper or air pressure hopper are sent fiber into the combing system, through carding, and by the lapping machine overlap onto repeatedly the required number of plies or grammes per square metre 250-270 gram/square metre.Prepare even high-performance leather base cloth by 5 needing machines, 9 needle plate needing machines.With fibre web by hangnail, just sting and begin to take shape fibrofelt.
The first road punch frequency and the degree of depth are respectively 550-650r/min, 13-15mm, and the second road punch frequency and the degree of depth are respectively 700-800r/min, 8-10mm, treat that fleece just adds above-mentioned woven cloth behind the one-step forming.Select the 3rd road acupuncture to add woven cloth, can guarantee that not only fibrofelt has good physical property, and fibrofelt is one-step forming just, be conducive to both combinations, form good physical property and cloth style, the 3rd road acupuncture is the present invention with the corresponding step of needling process between nonwoven layer 100 and the woven layer of cloth 200.Add the cloth structure and adopt the expanding device, can guarantee the smooth feeding of woven cloth, avoid removing from office base cloth and the discounting phenomenon occurs, and reduce and shrink.The 3rd road acupuncture complex machining process guarantees fibrofelt and woven fabric good combination, and does not damage the woven fabric brute force, forms good cloth style, and punch frequency and depth of needling are respectively 750-850r/min, 8-9mm.The moulding of preceding twice fibrofelt has important function to the back synthetic leather.
After tested, record leather base cloth grammes per square metre and be 250 grams/square metre, thickness is 0.9mm, longitudinal tear brute force be 76-80N/3cm, laterally tearing brute force is 80-84N/3cm, is 1 to the brute force ratio in length and breadth: 1-1.1.The explosion brute force is 15kgf/cm
2Compare the powerful 45-550N/5cm of being of leather base cloth performance one-longitudinal tear that leather base cloth production company produces on the market, laterally brute force is 50-60N/5cm, and the explosion brute force is 12kgf/cm
2
As can be known: be promoted to 1.03 (mean values) to tearing powerful uniformity from 1.1 in length and breadth,, it has powerfully had raising by a relatively large margin to tearing in length and breadth, is about 30-40%.The explosion brute force has improved nearly 25%.
Above-described embodiment and graphic and non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present invention to its suitable variation or modification of doing.
Claims (6)
1. the preparation method of an even high-performance leather base cloth is characterized in that, comprises the steps:
1. prepare nonwoven layer: this nonwoven layer is raw material with the Regenerated Polyester Fibres of 70-100wt% and the bigization terylene short fiber of 0-30wt%, forms nonwoven layer after mixing shredding, carding, lapping and twice acupuncture; The line density of this Regenerated Polyester Fibres is 1.5-6D, and fibre length is 38-51mm; The line density that is somebody's turn to do bigization terylene short fiber is 1.0-2.5D, and fibre length is 51-76mm;
2. the nonwoven layer and the woven layer of cloth that make is compound: as to choose woven layer of cloth, and the nonwoven layer that 1. itself and step make is linked to each other by needling process is compound; This woven layer of cloth adopts dacron thread to make, its through close be 70-85 root/in, filling density 40-55 root/in;
3. reinforce and hot rolling is handled, with form in length and breadth to tear powerful ratio all at 1: 1.1 with interior leather base cloth.
2. a kind of even high-performance as claimed in claim 1 is removed from office the preparation method of base cloth, it is characterized in that, the Regenerated Polyester Fibres of the 70-100wt% of this step in 1. adopts 2.0D * 51mm Regenerated Polyester Fibres of 20-90wt% and 3.5D * 51mm Regenerated Polyester Fibres of 10-50wt%, and this bigization terylene short fiber adopts 1.5D * 64mm.
3. a kind of even high-performance as claimed in claim 1 is removed from office the preparation method of base cloth, it is characterized in that, the first road punch frequency and the degree of depth are respectively 550-650r/min, 13-15mm in the twice acupuncture of this step in 1., and the second road punch frequency and the degree of depth are respectively 700-800r/min, 8-10mm.
4. a kind of even high-performance as claimed in claim 1 is removed from office the preparation method of base cloth, it is characterized in that, the needling process of this step in 2. is to adopt to be positioned at nonwoven layer and to add the 3rd road acupuncture after road acupuncture in man-hour first and the second road acupuncture, and the punch frequency of the 3rd road acupuncture and depth of needling are respectively 750-850r/min, 8-9mm.
5. a kind of even high-performance as claimed in claim 4 is removed from office the preparation method of base cloth, it is characterized in that, the needling process of this step in 2. also comprises the 4th road acupuncture and the 5th road acupuncture, and the punch frequency of the 4th road acupuncture and depth of needling are respectively 800-900r/min, 6-8mm; The punch frequency of the 5th road acupuncture and depth of needling are respectively 850-950r/min, 3-6mm.
6. the preparation method of a kind of even high-performance leather base cloth as claimed in claim 1 is characterized in that, this woven layer of cloth compound to the non-weaving cloth before also through the steam heat typing.
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| CN103657257A (en) * | 2013-12-05 | 2014-03-26 | 福建鑫华股份有限公司 | Efficient electret filtration material and preparation method thereof |
| CN107532354A (en) * | 2015-03-31 | 2018-01-02 | 弗罗伊登贝格性能材料有限合伙公司 | Mouldable composite pad |
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| CN107532354B (en) * | 2015-03-31 | 2019-08-20 | 弗罗伊登贝格性能材料有限合伙公司 | Mouldable composite pad |
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| CN103192556B (en) | 2015-06-10 |
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