CN210940765U - Natural fiber simulation leather - Google Patents
Natural fiber simulation leather Download PDFInfo
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- CN210940765U CN210940765U CN201921514782.5U CN201921514782U CN210940765U CN 210940765 U CN210940765 U CN 210940765U CN 201921514782 U CN201921514782 U CN 201921514782U CN 210940765 U CN210940765 U CN 210940765U
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Abstract
The utility model relates to the technical field of leather processing, in particular to a natural fiber simulation leather, which comprises a non-woven base layer of a needle punching method from bottom to top in sequence, is formed by interweaving natural fibers with the length not less than 2cm through the needle punching method, and has a fiber net structure inside; the bottom sealing layer is used for sealing the bottom of the upper surface of the needle-punched non-woven base layer into a smooth surface, and the resin layer is used for controlling the smoothness, the hand feeling and the dyeing uniformity of the upper surface of the needle-punched non-woven base layer; the surface effect layer is used for controlling the color and the hand feeling of the upper surface of the non-woven base layer by the needle punching method; the bottom sealing layer, the resin layer and the surface effect layer are all provided with air holes. The simulation leather of the utility model has excellent washing fading performance, excellent friction fading performance, good dyeing firmness, yellowing resistance, standard aging resistance, and various mechanical properties such as tensile strength, tearing strength, elongation and the like which are far greater than index requirements; because the natural fiber is adopted as the base material, the processing cost is reduced, and the environment is protected.
Description
Technical Field
The utility model relates to an artificial leather's technical field, concretely relates to natural fiber emulation leather.
Background
The traditional leather is animal skin which is obtained by carrying out physical and chemical processing such as unhairing, tanning and the like on animal skin hair, is denatured and is not easy to rot. The leather is formed by tightly weaving natural protein fibers in a three-dimensional space, has a special grain surface layer on the surface, has natural grains and luster, is comfortable in hand feeling, and is widely applied to the fields of sofas, cases, automotive interiors, balls and the like. In order to meet the requirements of people on different leather products and simultaneously avoid the situation that lawless persons kill some animals in a large quantity, more and more artificial leathers or simulated leathers are produced.
The artificial leather is mostly manufactured on a textile fabric substrate or a non-woven fabric substrate by foaming or film-coating processing of different formulas such as PVC or PU and the like. In order to make the artificial leather achieve the high strength and wear resistance of animal leather, a chemical binder combined by reinforced fibers needs to be added to modify a textile fabric substrate or a non-woven fabric substrate; and dyeing the base material by cylinder dyeing or slot dyeing, and finally performing after-treatment on the base material to form the artificial leather with the strength, the color and the hand feeling similar to the real leather.
The traditional artificial leather adopts a woven fabric substrate or a non-woven fabric substrate as raw materials, both of which are generally chemical fiber fabrics, and has low environmental protection property in production and processing; the used chemical binder for enhancing the bonding strength of the fibers can further increase the content of organic chemical components in the artificial leather and reduce the environmental protection of the product; when the base material is dip-dyed, the base material is dyed by a vat or a groove matched with the base material of the textile fabric or the base material of the non-woven fabric, the dyeing time is long, the general integral dyeing process at least needs about 5 hours, each ton of products generally needs to consume not less than 8 tons of water, the time consumption is long, the water consumption is large, and the production and processing cost is high.
In addition, both natural leather and artificial leather have the defect of poor air permeability, so that the clothes made of the natural leather have poor air permeability and moisture absorption and poor comfort.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a natural fibre emulation leather adopts natural fibre to make the netted basic unit of fibre similar with the leather for the raw materials, when satisfying the leather quality requirement, the cost is reduced, green.
The purpose of the utility model is realized through the following technical scheme:
a natural fiber simulation leather comprises a needle-punching non-woven substrate from bottom to top in sequence, is formed by interweaving natural fibers with the length not less than 2cm through a needle punching method, and has a fiber mesh structure inside; the bottom sealing layer is used for sealing the bottom of the upper surface of the needle-punched non-woven base layer into a smooth surface, and the resin layer is used for controlling the smoothness, the hand feeling and the dyeing uniformity of the upper surface of the needle-punched non-woven base layer; the surface effect layer is used for controlling the color and the hand feeling of the upper surface of the non-woven base layer by the needle punching method, and the bottom sealing layer, the resin layer and the surface effect layer are all provided with air holes.
Through adopting above-mentioned technical scheme, select for use in this application not less than 2cm long natural fibre, interweave through the needle-punching method and form the basic unit that has fibre network structure, the inner structure of this basic unit is extremely similar with the protein fiber structure of leather to the mechanical properties of leather can highly be restoreed. The base layer is manufactured by pure machinery, and no chemical auxiliary agent combined with the reinforced fiber is added, so that the environment is protected; compared with chemical fiber fabrics, the natural fiber leather has the advantages that the leather quality is met, the cost is reduced, and the natural fiber leather is more green and environment-friendly. The surface of the non-woven base layer by the needle punching method is treated through the bottom sealing layer, the resin layer and the surface effect layer, so that the non-woven base layer has the performances of smoothness, soft hand feeling, dyeing uniformity, luster and the like of leather. The air holes can ensure that the moisture in the inner layer of the simulation leather of the utility model can be discharged through the air holes after passing through the reticular needling non-woven base layer of the fiber, thereby improving the air permeability
Preferably, the antibacterial moisture absorption layer is attached to the lower surface of the needle-punched non-woven base layer and is of a net-shaped layer structure formed by blending and weaving bamboo fibers, wool fibers and cotton fibers.
Through adopting above-mentioned technical scheme, bamboo fibre and wool fibre all have antibacterial action, and cotton fiber's moisture absorption performance is better, and the three weaves the antibacterial moisture absorption performance of the netted layer structure who forms better, makes the utility model discloses an emulation leather has the function of antibiotic moisture absorption, is applied to back in the clothing product, and the user is more comfortable.
Preferably, the thickness of the antibacterial moisture absorption layer is 0.3-0.6 mm.
By adopting the technical scheme, the thickness of the antibacterial moisture absorption layer is too small, so that the antibacterial and dehumidifying effects are not obvious; too thick will affect the overall thickness and feel of the simulated leather, and a number of tests have verified that it is best within the above range.
Preferably, a three-dimensional embossing layer is combined between the surface effect layer and the resin layer.
By adopting the technical scheme, different three-dimensional embossing patterns or patterns are pressed according to different leather styles, so that simulated leather products with different styles are obtained.
Preferably, the interior of the needle-punched non-woven base layer is through-dyed with a chemical dye by a microwave dyeing method.
Through adopting above-mentioned technical scheme, because the utility model discloses a do not have any chemical admixture in the non-woven basic unit of acupuncture, but natural plant fiber or wool fibre, consequently color very easily. The microwave dyeing technology is selected in the process of coloring the base layer, the dyeing time is short, and almost the dyeing time is close to waterless dyeing, so that the problem of large water consumption in the traditional artificial leather dyeing process is solved, and the water energy consumption is reduced. In addition, the microwave dyeing is utilized, so that the wastewater discharge amount in the dyeing process is greatly reduced, and the method is more environment-friendly.
Preferably, the resin layer includes a first resin layer and a second resin layer compounded over the first resin layer.
Through adopting above-mentioned technical scheme, through first resin layer and second resin layer, mainly dye the surface of needle punching non-woven substrate, improve its surperficial color and luster and the dyeing degree of consistency.
Preferably, the thickness of the natural fiber simulation leather is 1.2-1.8 mm.
Through adopting the technical scheme, the utility model discloses a relatively thin state can be accomplished to emulation leather, but mechanical properties still can satisfy artificial leather's requirement, can practice thrift raw materials cost relatively.
To sum up, the utility model discloses following beneficial effect has:
(1) the natural fiber simulation leather of the utility model selects natural fiber as raw material, and has low cost; the fiber mesh-shaped base material is formed by adopting needling mechanical processing, so that the environment is protected; on the basis of a fiber mesh base material made of natural fibers, a microwave through-dyeing technology can be selected in the dyeing stage, so that the wastewater discharge and water consumption are reduced, energy is saved, emission is reduced, and the fabric is green and environment-friendly;
(2) the air holes are arranged and matched with the non-woven base layer and the antibacterial moisture absorption layer by the needle punching method, so that moisture can be well discharged, and the air holes have the functions of ventilation and moisture discharge;
(3) the utility model discloses an emulation leather, its washing fading property, friction fading property are good, and dyeing firmness is good, and yellowing resistance, ageing resistance can be up to standard, and each item mechanical properties such as tensile strength, tear strength, percentage elongation all are far more than the index requirement.
Drawings
FIG. 1 is a schematic cross-sectional view of the natural fiber artificial leather of the present invention;
reference numerals: 1. a needle-punched non-woven substrate; 2. a bottom sealing layer; 3. a first resin layer; 4. a second resin layer; 5. an oil wax layer; 6. an antibacterial moisture absorption layer; 7. a three-dimensional embossing layer; 8. and (4) air holes.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
The natural fiber simulation leather is 1.8mm in overall thickness, and as shown in figure 1, the natural fiber simulation leather sequentially comprises an antibacterial moisture absorption layer 6, a needle-punched non-woven base layer 1, a bottom sealing layer 2, a first resin layer 3, a second resin layer 4, a three-dimensional embossing layer 7 and a surface effect layer from bottom to top, wherein the surface effect layer is of an oil wax layer 5 structure formed by roll coating of nitrocotton gloss oil and a hand feeling agent. The needle-punched non-woven base layer 1 is formed by interweaving natural fibers through a needle punching method, and the interior of the needle-punched non-woven base layer 1 is of a fiber net structure. The utility model provides a natural fibre can select for use plant fiber, like pineapple leaf, banana leaf, tencel fibre etc. also can select for use animal hair fibre, for example wool fibre, ox hair fibre etc. fibre length need reach and are not less than 2cm, make the fibre network structure that acupuncture machining obtained inseparabler, durable more.
The interior of the needle-punched non-woven base layer 1 is permeated with chemical dye by a microwave dyeing method, so that the interior of the non-woven base layer has the same color system as the required leather product. The antibacterial moisture absorption layer 6 is a reticular layer structure formed by blending and weaving bamboo fibers, wool fibers and cotton fibers, and has the functions of ventilation, moisture absorption and antibiosis; the thickness of the antibacterial moisture absorption layer 6 is controlled to be 0.3-0.6mm, and is determined according to the specific leather product requirements, for example, the thickness of a thin garment fabric is selected to be 0.3-0.4 mm; the thickness of the back garment material or other product materials needing to be thicker is selected to be between 0.4mm and 0.6 mm. In order to improve the air permeability of the simulated leather, air holes 8 are formed in the bottom sealing layer 2, the first resin layer 3, the second resin layer 4, the three-dimensional embossing layer 7 and the oil wax layer 5, and the aperture of each air hole 8 is controlled to be about 0.1 mm.
Wherein, the bottom sealing layer 2 is a thin layer structure prepared by uniformly stirring and mixing the following raw materials in parts by weight: UB231 bottom sealing wax 35kg and pigment paste 10kg, the upper surface of the non-woven base layer of the needle punching method is sealed from the hair side to be a smooth surface. The first resin layer 3 is prepared by uniformly mixing the following raw materials in parts by weight: 8kg of AB110 acrylic resin, 8kg of 4612 delustering filler, 25kg of 4570 wax, 10kg of 7612 hand feeling agent, 15kg of pigment paste and 5kg of thickening agent. The second resin layer 4 is prepared by uniformly mixing the following raw materials in parts by weight: 1435 kg of soft polyurethane, 8kg of AB110 acrylic resin, 8kg of 4612 delustering filler, 25kg of 4570 wax, 10kg of 7612 hand feeling agent, 15kg of pigment paste and 5kg of thickening agent. The oil wax layer is prepared by uniformly mixing the following raw materials in parts by weight: 6016 kg of nitrocotton gloss oil, 45kg of water and 7620 kg of hand feeling agent are used for controlling and adjusting the color and the hand feeling of the upper surface of the non-woven base layer 1 by the needle punching method.
The utility model discloses antibiotic moisture absorption principle of emulation leather does:
the antibacterial moisture absorption layer 6 is positioned at the innermost layer of the fabric, when hot air or sweat exists in a human body, the moisture is absorbed through the antibacterial moisture absorption layer 6 at first, and due to the antibacterial effect of the antibacterial moisture absorption layer 6, sterilization is carried out while dehumidification is carried out; the dehumidified hot air penetrates out of the leather through the air holes 8, so that the functions of ventilation, dehumidification and antibiosis are realized.
The processing flow of the natural fiber simulation leather of the embodiment specifically comprises the following steps:
(1) manufacture of non-woven base layer by needle punching method
Opening natural fibers through an opener to loosen the fibers; the fiber web is put into a carding machine to enable loose natural fibers to be uniformly formed into a web, then the web is put into a dry needling device, and the fiber web is repeatedly punctured by using a pricking pin with a barb on the edge of a triangular section (or other sections); when the barbs penetrate through the fiber web, fibers on the surface and the local inner layer of the fiber web are forced to penetrate into the fiber web; the original fluffy fiber web is compressed due to the friction effect among the fibers, and when the felting needles exit the fiber web, the penetrated fiber bundles are separated from the barbs and are remained in the fiber web, so that a plurality of fiber bundles are entangled with the fiber web and can not restore the original fluffy state; after many times of needling, a considerable number of fiber bundles are penetrated into the fiber web, so that the fibers in the fiber web are intertwined with one another, thereby forming the needle-punched non-woven base layer 1 with the thickness of 1.0mm (the conventional thickness of leather), wherein a fiber net structure formed by needling is very similar to the structure of a leather fiber layer, and the fibers are interwoven with one another to achieve the strength similar to that of a leather material;
(2) internal dyeing treatment of needle-punched non-woven base layer
Dyeing is carried out according to different color requirements, the needle-punched non-woven base layer 1 is manufactured by using physical action and has no chemical material components, so that the fiber is easy to be adhered with color, a microwave anhydrous dyeing technology is selected in the process, at the moment, the needle-punched non-woven base layer 1 is similar to cloth in state, and because the leather surface effect is required to be made in the later stage of the material, the requirement on the surface dyeing uniformity is not high, only the transparent dyeing is carried out, and the microwave anhydrous dyeing time is short and the energy consumption is low, so that different color requirements can be met by microwave dyeing in the transparent dyeing process, and the simulated leather blank is obtained;
wherein the transmission speed of the needle-punched non-woven base layer 1 is 3m/min, the microwave power is 7 kw, and the drying temperature of microwave dyeing is 50 ℃; the microwave through-dyeing dye comprises the following components in parts by weight: dye: leather penetrant: 1 part of water: 0.05: 10, controlling the water temperature at 35 ℃; the dye is selected with required color according to the requirement of actual production and processing;
(3) surface treatment of simulated leather blank
The dyed material basically achieves the same effect as the leather blank, and the surface of the dyed material needs to be further treated to achieve the same effect as the finished leather product; the method specifically comprises the following steps: sequentially roll-coating the bottom sealing layer 2, the first resin layer 3, the second resin layer 4 and the oil wax layer 5 on the upper surface of the simulated leather initial blank by using roll-coating equipment, and then performing mound polishing;
after the bottom sealing layer 2 is roll-coated, carrying out primary calendering at the calendering pressure of 3kgf and the calendering temperature of 93 ℃; then, roll-coating the first resin layer 3, and carrying out secondary calendering at a calendering pressure of 2kgf and a calendering temperature of 78 ℃; the mesh number of the roller coating upper roller is 30 meshes; and (3) polishing the upper surface layer of the simulated leather blank which is roll-coated with the second resin layer 4 after waxing, wherein the polishing pressure is 10kgf, and the polishing temperature is 70 ℃, and finally, the natural fiber simulated leather is obtained.
In addition, in order to meet the surface effects of different patterns and embossing, after the natural fiber simulation leather is obtained, the surface effects of different styles can be made through leather processing equipment such as an embossing machine, a transfer machine and the like.
Comparative example 1
Comparative example 1 is cowhide top leather.
Performance testing
The simulated leathers of the examples and the comparative example 1 of the present invention were subjected to performance tests, and the specific results are shown in table 1.
TABLE 1 Performance test results for different simulated leathers
The results of the tests in table 1 show that the natural fiber artificial leather of the present invention has similar properties to the artificial leather of comparative example 1; the washing fading performance and the friction fading performance of the dye are excellent, the dyeing firmness is good, the yellowing resistance and the aging resistance reach the standard, and the mechanical properties such as the tensile strength, the tearing strength and the elongation are far greater than the index requirements.
The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws and protection within the scope of the present invention.
Claims (7)
1. The natural fiber simulation leather is characterized by sequentially comprising the following components from bottom to top:
the needle-punched non-woven base layer (1) is formed by interweaving natural fibers with the length not less than 2cm through a needle punching method, and the interior of the base layer has a fiber mesh structure;
a bottom sealing layer (2), which seals the bottom of the upper surface of the non-woven base layer by the needle punching method into a smooth surface,
the resin layer is used for controlling the smoothness, the hand feeling and the dyeing uniformity of the upper surface of the non-woven base layer by the needle punching method;
the surface effect layer is used for controlling the color and the hand feeling of the upper surface of the non-woven base layer by the needle punching method,
the bottom sealing layer (2), the resin layer and the surface effect layer are all provided with air holes (8).
2. The natural fiber artificial leather according to claim 1, wherein: the antibacterial moisture absorption layer (6) is adhered to the lower surface of the non-woven base layer (1) by the needle punching method, and the antibacterial moisture absorption layer (6) is of a net-shaped layer structure formed by blending bamboo fibers, wool fibers and cotton fibers.
3. The natural fiber artificial leather according to claim 2, wherein: the thickness of the antibacterial moisture absorption layer (6) is 0.3-0.6 mm.
4. The natural fiber artificial leather according to claim 1, wherein: and a stereoscopic embossing layer (7) is compounded between the surface effect layer and the resin layer.
5. The natural fiber artificial leather according to claim 1, wherein: the interior of the needle-punched non-woven base layer (1) is through-dyed with chemical dye by a microwave dyeing method.
6. The natural fiber artificial leather according to claim 1, wherein: the resin layer comprises a first resin layer (3) and a second resin layer (4) compounded above the first resin layer (3).
7. The natural fiber artificial leather according to claim 1, wherein: the thickness of the natural fiber simulation leather is 1.2-1.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921514782.5U CN210940765U (en) | 2019-09-11 | 2019-09-11 | Natural fiber simulation leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921514782.5U CN210940765U (en) | 2019-09-11 | 2019-09-11 | Natural fiber simulation leather |
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| Publication Number | Publication Date |
|---|---|
| CN210940765U true CN210940765U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921514782.5U Active CN210940765U (en) | 2019-09-11 | 2019-09-11 | Natural fiber simulation leather |
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| CN (1) | CN210940765U (en) |
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- 2019-09-11 CN CN201921514782.5U patent/CN210940765U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221116 Address after: 052,360 West of Shengxing Road and North of Nongmao Street, Xinji, Shijiazhuang, Hebei Patentee after: Xinji Baolong Wool Textile Co.,Ltd. Address before: 050000 Xinji leather industry zone, Shijiazhuang City, Hebei Province Patentee before: XINJI MEIHUA LEATHER INDUSTRY CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 052,360 West of Shengxing Road and North of Nongmao Street, Xinji, Shijiazhuang, Hebei Patentee after: Xinji Baolong Technology Co.,Ltd. Address before: 052,360 West of Shengxing Road and North of Nongmao Street, Xinji, Shijiazhuang, Hebei Patentee before: Xinji Baolong Wool Textile Co.,Ltd. |