CN109811467B - Imitation inner leather - Google Patents
Imitation inner leather Download PDFInfo
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- CN109811467B CN109811467B CN201910065332.0A CN201910065332A CN109811467B CN 109811467 B CN109811467 B CN 109811467B CN 201910065332 A CN201910065332 A CN 201910065332A CN 109811467 B CN109811467 B CN 109811467B
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Abstract
The invention relates to an imitation inner leather, and the preparation process comprises the following steps: step 1, needling polyester fibers by using a plurality of high-speed needling machines to obtain a non-woven fabric; step 2, laying cotton-like velvet on the non-woven fabric, and mixing and reinforcing the cotton-like velvet by using a plurality of high-speed needling machines; step 3, cutting, pressing and coiling to obtain a finished product; the weight ratio of the non-woven fabric to the cotton-like velvet is 7:8, and the non-woven fabric and the cotton-like velvet are subjected to dyeing treatment through color master batches in advance. The invention has the following advantages: the density of the non-woven fabric is improved by multiple times of needling, so that the non-woven fabric is closer to the inner skin in flexibility, compared with the non-woven fabric, the hand feeling of the imitated cotton velvet is smoother and softer, the non-woven fabric and the imitated cotton velvet are mixed and punctured in a weight ratio of 7:8, so that the hand feeling of the imitated inner skin is smoother, and meanwhile, the imitated cotton velvet is looser compared with the non-woven fabric after multiple times of puncturing, is filled in the non-woven fabric, and can be further closer to the inner skin in flexibility.
Description
Technical Field
The invention relates to the field of non-woven fabrics, in particular to an imitation inner leather.
Background
The non-woven fabric is composed of oriented or random fibers, has no warp and weft, is very convenient to cut and sew, is light and easy to shape, and is deeply favored by hand enthusiasts. However, when a bag liner is made of a nonwoven fabric, it is desirable that the nonwoven fabric has a texture similar to that of a back cover.
Chinese patent publication No. CN102587037A discloses an imitation inner leather nonwoven fabric and a preparation method thereof, wherein the preparation method comprises the following steps: (1) processing into a cotton net: the raw material polyester fiber is sequentially subjected to needle row cotton opening, cotton carding by a carding machine and cotton paving by a cotton paving machine to form a primary cotton web; (2) and (3) needling reinforcement: the cotton net comprises a fiber layer, and double-sided needling reinforcement is carried out on the fiber layer by using a double-sided needling machine, so that strip-shaped needling fiber bundles in two opposite directions are formed in the fiber layer; (3) impregnation: the reinforced cotton net enters a soaking machine to be combined with prepared heat-sensitive high-wear-resistance latex resin in a thermal solidification mode, and the weight ratio of the cotton net to the resin is 60: 40; (4) and (3) drying: drying and shaping the impregnated cotton net into cloth through a drying wheel, and coiling the cloth; (5) grinding the skin: and (4) grinding the surface of the cloth obtained in the step (4) to be flat by using a leather grinder to achieve the real leather-like hand feeling.
With the progress of environmental protection, the control of the content of DMF in the product is more and more strict, and the impregnation step usually uses DMF as an organic solvent, which is not favorable for the progress of environmental protection and needs to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the imitation inner leather which has the advantages of environmental protection, excellent hand feeling and excellent wear resistance.
The above object of the present invention is achieved by the following technical solutions:
the preparation process of the imitation inner leather comprises the following steps,
step 1, mixing, loosening, carding and forming a net on polyester fibers in sequence;
step 3, laying cotton-like velvet on the non-woven fabric, and driving corresponding second felting needles to mix and reinforce through a plurality of high-speed needling machines;
step 4, cutting, pressing and coiling to obtain a finished product;
the weight ratio of the non-woven fabric to the cotton-like velvet is 7:8, and the non-woven fabric and the cotton-like velvet are subjected to dyeing treatment through color master batches in advance.
By adopting the technical scheme, the non-woven fabric has the characteristics of ventilation, flexibility, recycling and the like, but is light and thin, and is punctured for multiple times through a plurality of high-speed needling machines to improve the density of the non-woven fabric, so that the non-woven fabric is closer to a back in flexibility, and compared with the non-woven fabric, the imitated cotton velvet is smoother and softer in hand feeling, the non-woven fabric and the imitated cotton velvet are punctured in a mixed mode according to the weight ratio of 7:8, so that the hand feeling of the imitated back is smoother, meanwhile, the imitated cotton velvet is looser than the non-woven fabric punctured for multiple times, and is filled in the non-woven fabric, the non-woven fabric and the imitated cotton velvet are closer to the back in flexibility, and the non-woven fabric and the imitated cotton velvet are strong in combination fastness and good in wear resistance. Meanwhile, the combination of non-woven fabrics and cotton-like velvet replaces the chemical treatment in the prior art, and the method has breakthrough in the environmental protection in the field.
The invention is further configured to: 4-5 high-speed needling machines are arranged for driving the first felting needles, the density of the first felting needles is 2.3 ten thousand per square meter, 3-4 high-speed needling machines are arranged for driving the second felting needles, the density of the second felting needles is 2.5 ten thousand per square meter, and the puncturing frequency of each high-speed needling machine is 20 times per second.
By adopting the technical scheme, the first felting needles and the corresponding second felting needles on the plurality of high-speed needling machines are matched with each other to carry out high-frequency needling on the non-woven fabric and the imitation cotton velvet, so that the imitation leather has good wear resistance and hand feeling.
The invention is further configured to: first felting needle includes first needle bar, head rod and first needle point from last to down in proper order, the total length of first felting needle is 90mm, the length of first needle bar is 40mm, the diameter is 1.8mm, the length of first connecting rod is 21mm, the diameter is 1.3mm, the length of first needle point is 25mm, the cross-sectional area of first needle point is the setting that constantly diminishes and the cross-section is equilateral triangle.
Through adopting above-mentioned technical scheme, first pinpoint is the triangle cone form, is favorable to avoiding or reducing the fracture of needle, and the length ratio of first needle bar, head rod and first pinpoint, the diameter ratio is more reasonable, is favorable to improving the structural strength of first felting needle, further avoids or reduces the fracture of needle, and the non-woven fabrics that the acupuncture obtained is more even fine and close.
The invention is further configured to: a transition rod with the length of 4mm and the diameter of 1mm is further arranged between the first connecting rod and the first needle point, and the side length of the largest cross section of the first needle point is equal to the diameter of the transition rod.
Through adopting above-mentioned technical scheme, through the setting of transition pole for the structural strength of first needle point obtains improving to a certain extent.
The invention is further configured to: every arris of first needle point all is seted up three first gullet tooth along the length direction align to grid of corresponding arris, and is adjacent on same arris first gullet tooth interval is 5mm, on three arris first gullet tooth is heliciform dislocation array, is located the top first gullet tooth is 5mm with the top interval of first needle point, is located the bottom first gullet tooth is 5mm with the bottom interval of first needle point.
Through adopting above-mentioned technical scheme, be the heliciform dislocation arrangement through being the first gullet tooth on three arriss, can make first gullet tooth area fibre volume suitable and even, and can make the atress of first felting needle more even and difficult fracture.
The invention is further configured to: the taper of the two taper transitions is set to be 1: 7.
Through adopting above-mentioned technical scheme, the structure through two cone-shaped transition sets up and cooperates with first felting needle, has further improved the structural strength of first felting needle.
The invention is further configured to: the second felting needle includes second needle bar, second connecting rod and second needle point from last to down in proper order, the total length of second felting needle is 77mm, the length of second needle bar is 35mm, diameter and is 1.8mm, the length of second connecting rod is 22mm, diameter and is 1.2mm, the length of second needle point is 20mm, the cross-sectional area of second needle point is constantly diminishing setting and the cross-section is equilateral triangle, the biggest cross-sectional side length of second needle point is 0.6 mm.
Through adopting above-mentioned technical scheme, because the second felting needle need puncture non-woven fabrics and imitative cotton velvet simultaneously, through above-mentioned structural setting, can be more compact and more be favorable to imitative cotton velvet and non-woven fabrics fully to combine in the setting of first felting needle relatively, and the second felting needle has good structural strength and is favorable to avoiding or reducing the fracture of second felting needle.
The invention is further configured to: the second needle point is arranged in a spiral shape, and the thread pitch of the second needle point is 40 mm.
Through adopting above-mentioned technical scheme, because the second needle point is thinner than in first needle point, and punctures imitative cotton velvet and non-woven fabrics simultaneously, the bolted form be provided with and do benefit to and improve its puncture power to make the pliability of second needle point obtain promoting in order to reduce the rate of rupture.
The invention is further configured to: all be provided with two spiral direction align to grid second gullet teeth along corresponding arris on every arris of second needle point, two on same arris the second gullet tooth is 6.5mm along second needle point length direction's distance, on three arris the second gullet tooth is heliciform dislocation array, is located topmost the difference in height on second gullet tooth and the top of second needle point is 6.5mm, is located the bottommost the difference in height of second gullet tooth and the bottom of second needle point is 3 mm.
Through adopting above-mentioned technical scheme, through above-mentioned structure, can further improve the atress homogeneity of second needle point in the puncture process in order to reduce the rate of rupture of second needle point to can make second hook tooth area fibre volume suitable and even, thereby make imitative lining compact and even, have good feel, pliability and wearability.
The invention is further configured to: the taper between the second needle rod and the second connecting rod and between the second connecting rod and the second needle point are in taper transition arrangement, and the taper of the two taper transition arrangements is 1: 8.
Through adopting above-mentioned technical scheme, the structure through two cone-shaped transition sets up and the second felting needle cooperatees, has further improved the structural strength of second felting needle.
In conclusion, the beneficial technical effects of the invention are as follows:
through mixing non-woven fabrics and imitative cotton velvet with specific gravity to adopt first felting needle and second felting needle respectively in order to carry out high-speed acupuncture to two kinds of materials, the imitative back that finally obtains not only feels, pliability and wearability are good, and have breakthrough meaning in the environmental protection in this field.
Drawings
FIG. 1 is a schematic view of a first lancet of the present invention;
FIG. 2 is a schematic view of a second lancet of the present invention;
FIG. 3 is a schematic view of the first tip of the present invention;
fig. 4 is a schematic view of the structure of the second tip of the present invention.
Description of reference numerals: 1. a first lancet; 11. a first needle bar; 12. a first connecting rod; 13. a first needle tip; 131. a first hook tooth; 14. a transition rod; 2. a second lancet; 21. a second needle bar; 22. a second connecting rod; 23. a second needle tip; 231. and a second hook tooth.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples
Referring to fig. 1 and 2, the preparation process of the imitation inner leather disclosed by the invention comprises the following steps:
step 1, mixing polyester fibers by a cotton mixer, loosening the polyester fibers by an opener, and then feeding the polyester fibers into a cotton box, a carding machine and a web former for web formation;
step 3, laying cotton-like velvet on the non-woven fabric, driving a plurality of second felting needles 2 on corresponding needle plates to mix and reinforce through 3-4 high-speed needling machines,
and 4, cutting, pressing and coiling to obtain a finished product.
The weight ratio of the non-woven fabric to the cotton-like velvet is 7:8, and the non-woven fabric and the cotton-like velvet raw materials are dyed by the color master batches in advance, so that compared with the prior art that a finished product is sent to a dye house for dyeing, the secondary damage of dye to fibers is avoided, and the color fastness is higher.
The piercing frequency of the high-speed needle machine in step 2 and step 3 is 20 times per second, the density of the first needles 1 on the corresponding needle board is 2.3 ten thousand per square meter, and the density of the second needles 2 on the corresponding needle board is 2.5 ten thousand per square meter.
Referring to fig. 1 and 3, the first puncture needle 1 sequentially comprises a first needle bar 11, a first connecting rod 12 and a first needle tip 13 which are integrally formed from top to bottom, the total length of the first puncture needle 1 is 90mm, the length of the first needle bar 11 is 40mm, the diameter of the first needle bar 11 is 1.8mm, the length of the first connecting rod 12 is 21mm, the diameter of the first connecting rod is 1.3mm, and the length of the first needle tip 13 is 25 mm.
Wherein, still integrative being connected with between head rod 12 and the first pinpoint 13 length be 4mm, the diameter is 1 mm's transition pole 14, and the cross-sectional area of first pinpoint 13 is the constantly diminishing setting, and the cross-section is equilateral triangle, and the length of a side of the biggest cross-section of first pinpoint 13 equals with the diameter of transition pole 14.
All set up three first gullet tooth 131 along the length direction align to grid of corresponding arris on every arris of first pinpoint 13, the interval of adjacent first gullet tooth 131 on same arris is 5mm, and all first gullet teeth 131 on three arris are heliciform dislocation array, and the top interval that is located first gullet tooth 131 of topmost and first pinpoint 13 is 5mm, and the bottom interval that is located first gullet tooth 131 of bottommost and first pinpoint 13 is 5 mm.
In order to further improve the structural strength of the first puncture needle 1, the bottom ends of the first puncture needle rod 11 and the first connecting rod 12 are both arranged in a tapered necking manner, so that the first puncture needle rod 11 and the first connecting rod 12 and the transition rod 14 are in a tapered transition manner, and the tapers of the two tapered necking are both set to be 1: 7.
Referring to fig. 2 and 4, the second lancet needle 2 comprises a second needle rod 21, a second connecting rod 22 and a second needle tip 23 which are integrally formed in sequence from top to bottom, the total length of the second lancet needle 2 is 77mm, the length of the second needle rod 21 is 35mm, the diameter of the second needle rod is 1.8mm, the length of the second connecting rod 22 is 22mm, the diameter of the second connecting rod is 1.2mm, and the length of the second needle tip 23 is 20 mm. The cross-sectional area of the second needle tip 23 is constantly reduced, the cross-section is an equilateral triangle, and the side length of the maximum cross-section is 0.6 mm.
In order to improve the puncturing force of the second puncture needle 2, the second puncture needle 23 is spirally arranged, and the thread pitch of the spiral arrangement is 40mm, namely, the length of the second puncture needle 23 is exactly half of the thread pitch.
Each edge of the second needle tip 23 is provided with two second hook teeth 231 which are uniformly arranged along the spiral direction of the corresponding edge, the distance between the two second hook teeth 231 on the same edge along the length direction of the second needle tip 23 is 6.5mm, all the second hook teeth 231 on the three edges are arranged in a spiral staggered manner, the height difference between the second hook teeth 231 at the topmost end and the top end of the second needle tip 23 is 6.5mm, and the height difference between the second hook teeth 231 at the bottommost end and the bottom end of the second needle tip 23 is 3 mm.
In order to improve the structural strength of the second puncture needle 2, the bottom ends of the second needle bar 21 and the second connecting rod 22 are arranged in a conical necking shape, so that the space between the second needle bar 21 and the second connecting rod 22 and the space between the second connecting rod 22 and the second puncture needle 23 are arranged in a conical transition shape, and the conicity of the two conical necking shapes is 1: 8.
Through mixing non-woven fabrics and imitative cotton velvet with specific gravity to adopt first felting needle 1 and second felting needle 2 respectively in order to carry out high-speed acupuncture to two kinds of materials, the imitative back that finally obtains not only feels, pliability and wearability are good, and have breakthrough meaning in the environmental protection nature in this field.
Detection method
The dry samples were tested for abrasion resistance with reference to SATRA TM31:2003(2005), Method A,12 kPa, and the results are shown in the following table
| Degree of wear after 1600 revolutions | Very slight wear |
| Wear after 3200 revolutions | Slight abrasion |
| Degree of wear after 6400 revolutions | Slight abrasion |
| Degree of wear after 12800 revolutions | Moderate wear |
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. An imitation inner leather is characterized in that: the preparation process comprises the following steps of,
step 1, mixing, loosening, carding and forming a net on polyester fibers in sequence;
step 2, driving corresponding first felting needles (1) to be reinforced through a plurality of high-speed needling machines to form non-woven fabrics;
step 3, laying cotton-like velvet on the non-woven fabric, and driving corresponding second felting needles (2) to mix and reinforce through a plurality of high-speed needling machines;
step 4, cutting, pressing and coiling to obtain a finished product;
the weight ratio of the non-woven fabric to the cotton-like velvet is 7:8, and the non-woven fabric and the cotton-like velvet raw materials are subjected to dyeing treatment through color master batches in advance;
the first puncture needle (1) sequentially comprises a first needle rod (11), a first connecting rod (12) and a first needle point (13) from top to bottom, the total length of the first puncture needle (1) is 90mm, the length of the first needle rod (11) is 40mm, the diameter of the first puncture needle is 1.8mm, the length of the first connecting rod (12) is 21mm, the diameter of the first puncture needle is 1.3mm, the length of the first needle point (13) is 25mm, the cross-sectional area of the first needle point (13) is in a constantly-decreasing arrangement, and the cross-sectional area of the first needle point (13) is in an equilateral triangle shape;
a transition rod (14) with the length of 4mm and the diameter of 1mm is further arranged between the first connecting rod (12) and the first needle point (13), and the side length of the largest section of the first needle point (13) is equal to the diameter of the transition rod (14);
all set up three first gullet tooth (131) along the length direction align to grid of corresponding arris on every arris of first needle point (13), adjacent on same arris first gullet tooth (131) interval is 5mm, on three arris first gullet tooth (131) are heliciform dislocation array, are located the top first gullet tooth (131) are 5mm with the top interval of first needle point (13), are located the bottommost first gullet tooth (131) are 5mm with the bottom interval of first needle point (13).
2. The imitation upholstery of claim 1, wherein: 4-5 high-speed needling machines are arranged for driving the first felting needles (1), the density of the first felting needles (1) is 2.3 ten thousand per square meter, 3-4 high-speed needling machines are arranged for driving the second felting needles (2), the density of the second felting needles (2) is 2.5 ten thousand per square meter, and the puncturing frequency of each high-speed needling machine is 20 times per second.
3. The imitation upholstery of claim 1, wherein: the taper of the two taper transitions is set to be 1: 7.
4. The imitation upholstery of claim 1, wherein: second felting needle (2) are from last to including second needle bar (21), second connecting rod (22) and second needle point (23) down in proper order, the total length of second felting needle (2) is 77mm, the length of second needle bar (21) is 35mm, the diameter is 1.8mm, the length of second connecting rod (22) is 22mm, the diameter is 1.2mm, the length of second needle point (23) is 20mm, the cross-sectional area of second needle point (23) is constantly diminishing setting and cross-section is equilateral triangle, the biggest cross-sectional side length of second needle point (23) is 0.6 mm.
5. The imitation upholstery of claim 4, wherein: the second needle point (23) is arranged in a spiral shape, and the thread pitch of the second needle point (23) is 40 mm.
6. The imitation upholstery of claim 5, wherein: all be provided with two spiral direction align to grid second gullet tooth (231) along corresponding arris on every arris of second needle point (23), two on same arris second gullet tooth (231) are 6.5mm along second needle point (23) length direction's distance, on three arris second gullet tooth (231) are the heliciform dislocation array, are located topmost the difference in height on the top of second gullet tooth (231) and second needle point (23) is 6.5mm, is located the bottommost the difference in height of the bottom of second gullet tooth (231) and second needle point (23) is 3 mm.
7. The imitation upholstery of claim 4, wherein: the taper between the second needle rod (21) and the second connecting rod (22) and between the second connecting rod (22) and the second needle point (23) are in taper transition arrangement, and the taper of the two taper transition arrangements is 1: 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065332.0A CN109811467B (en) | 2019-01-23 | 2019-01-23 | Imitation inner leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910065332.0A CN109811467B (en) | 2019-01-23 | 2019-01-23 | Imitation inner leather |
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| Publication Number | Publication Date |
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| CN109811467A CN109811467A (en) | 2019-05-28 |
| CN109811467B true CN109811467B (en) | 2021-04-02 |
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| CN201910065332.0A Active CN109811467B (en) | 2019-01-23 | 2019-01-23 | Imitation inner leather |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11241267A (en) * | 1998-02-21 | 1999-09-07 | Dynic Corp | Nonwoven fabric for internal trim material |
| CN103388243A (en) * | 2012-05-08 | 2013-11-13 | 台州宇星制针有限公司 | Felting needle special for nonwoven fabric surface raising |
| CN203371856U (en) * | 2013-06-09 | 2014-01-01 | 江阴兴吴呢绒科技有限公司 | Additive-free environment-friendly-type compound fabric |
| CN104862983A (en) * | 2015-05-22 | 2015-08-26 | 海宁市宏源无纺布业有限公司 | Production process of needle punched non-woven fabric composited with genuine leather scraps |
| CN106948082B (en) * | 2017-05-11 | 2019-02-19 | 平阳盛兴无纺布有限公司 | High density imitation inner leather |
| CN107805903A (en) * | 2017-09-28 | 2018-03-16 | 浙江同辉纺织股份有限公司 | A kind of production technology of imitative velveteen |
| CN109094152A (en) * | 2018-07-13 | 2018-12-28 | 桐乡市龙翔纺织有限责任公司 | A kind of imitative hot wind rubs line cowhide face material manufacturing technique |
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