CN109097511B - Animal-grain double-color leather and preparation method thereof - Google Patents
Animal-grain double-color leather and preparation method thereof Download PDFInfo
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- CN109097511B CN109097511B CN201811051315.3A CN201811051315A CN109097511B CN 109097511 B CN109097511 B CN 109097511B CN 201811051315 A CN201811051315 A CN 201811051315A CN 109097511 B CN109097511 B CN 109097511B
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C11/00—Surface finishing of leather
- C14C11/003—Surface finishing of leather using macromolecular compounds
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Abstract
The invention discloses animal-grain two-color leather and a preparation method thereof, and belongs to the technical field of leather. The animal grain double-color leather comprises a leather material, a first coating and a second coating, wherein the second coating and the first coating are sequentially coated on the leather material, and the manufacturing method comprises the following steps: preparing a coating, coating the coating, attaching a skin and baking. The animal grain bicolor leather prepared by the preparation method has animal grains on the surface, strong stereoscopic impression, excellent hand feeling and strong color fastness.
Description
Technical Field
The invention belongs to the technical field of leather, and particularly relates to animal-grain double-color leather and a preparation method thereof.
Background
With the development of society, people have higher and higher requirements on the quality and the aesthetic property of living goods. Among them, leather products have been widely used in the fields of sofas, automobile seats, bags and the like, and with the increasing requirements of people on leather products, the traditional leather products can not meet the requirements of people. The clothing products with animal grains are well popularized in the market and are deeply favored by people, the leather products with animal grains also have good market prospect, and the existing animal grain leather products have the defects of three-dimensional sense and poor hand feeling.
Therefore, it is required to provide animal-grain two-color leather with animal grain on the surface, strong stereoscopic impression and excellent hand feeling.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the animal grain bicolor leather which has animal grains, strong stereoscopic impression and excellent hand feeling.
The invention adopts the following technical scheme:
animal-grain double-color leather comprises a leather material, a first coating and a second coating, wherein the first coating and the second coating are sequentially attached to the leather material, the first coating comprises 11-13% of isooctanol polyoxyethylene ether phosphate, 4-6% of octadecyl acrylate, 5-7% of cocamidopropyl amine oxide and 3-5% of a two-liquid primer according to the mass percentage of the leather material, and the second coating comprises 6-8% of 3-methacryloxypropyl methyldimethoxysilane, 3-5% of the two-liquid primer, 8-11% of fatty alcohol polyoxyethylene ether and 11-12% of sorbitan fatty acid ester according to the mass percentage of the leather material.
The preparation method of the animal-grain two-color leather comprises the following steps:
step one, preparing a coating:
s11, preparing a first coating:
according to the mass percentage, uniformly mixing and stirring the isooctanol polyoxyethylene ether phosphate, the octadecyl acrylate, the cocamidopropyl amine oxide and the two-liquid type primer to obtain a first coating;
s12, preparing a second coating:
according to the mass percentage, stirring and uniformly mixing the 3-methacryloxypropyl methyldimethoxysilane, the fatty alcohol-polyoxyethylene ether, the sorbitan fatty acid ester and the two-liquid type base material to obtain a second coating;
step two, coating a coating:
coating the second coating obtained in the step one on release paper through a coating roller to form a second coating layer to obtain coated release paper, and then coating the first coating obtained in the step one on the obtained second coating layer through the coating roller to form a first coating layer to obtain coated release paper;
step three, leather sticking:
attaching a leather material to the obtained first coating layer to obtain a leather material for attaching leather;
step four, baking:
and (4) stripping the release paper on the leather material for sticking the leather obtained in the step three, then baking, and naturally cooling to obtain the animal-grain two-color leather.
Furthermore, the surface of the coating roller is provided with bumps.
Further, the arrangement mode of the bumps on the surface of the coating roller is one of regular arrangement or irregular arrangement.
Further, when the first coating is coated in the second step, the coating temperature is 80-90 ℃, the coating speed is 7-8 m/min, and the coating pressure is 0.5-0.8 kg.
Further, when the second coating is coated in the second step, the coating temperature is 70-75 ℃, the coating speed is 5-7 m/min, and the coating pressure is 1-2 kg.
Furthermore, the pressure during the skin attaching is 3-4 kg.
Further, in the fourth step, the baking temperature is 80-85 ℃, and the drying time is 60-90 min.
Compared with the prior art, the invention has the following beneficial effects:
in the first coating, 3-methacryloxypropyl methyldimethoxysilane is used as a softening agent, fatty alcohol-polyoxyethylene ether is used as a surfactant, and sorbitan fatty acid ester is used as a stabilizer, after the three raw materials are mixed for use, the lubricity between the second coating layer and release paper is improved when the release paper is peeled, the aesthetic property of the second coating can be kept when the release paper is peeled, the quality of leather is improved, and the damage is prevented;
in the second and first coatings, isooctanol polyoxyethylene ether phosphate is used as a penetrating agent, octadecyl acrylate is used as an adhesive, and cocamidopropyl amine oxide is used as a surfactant, and after the three raw materials are mixed for use, the first coating has strong viscosity, and the cocamidopropyl amine oxide can effectively neutralize the surface static electricity of the leather, improve the adhesion between the leather and the first coating layer, and improve the adhesion among the leather layer, the first coating layer and the second coating layer; in addition, the color fastness, strength and softness of the leather are improved under the combined action of the first coating and the second coating;
thirdly, when coating, through being equipped with the lug on the coating roller surface, different coating pressure (need supply specific coating pressure down in the scheme) that exert to release paper during the reunion coating for form certain colour difference between first dope layer and the second dope layer, improved the visual effect on leather surface, make the leather demonstrate stronger third dimension and feel, thereby give the visual sense of leather animal line.
Drawings
Fig. 1 is a schematic view of the structure of a coating roller used in the present invention.
Detailed Description
The raw materials used in the invention are all commercial products, wherein:
isooctanol polyoxyethylene ether phosphate is purchased from Haian petrochemical plant of Jiangsu province, model AEP;
3-methacryloxypropylmethyldimethoxysilane was purchased from Gaedes chemical network and has CAS number 14513-34-9.
Example 1
Animal-grain double-color leather comprises a leather material, a first coating and a second coating, wherein the first coating and the second coating are sequentially attached to the leather material, the first coating comprises 11% of isooctanol polyoxyethylene ether phosphate, 4% of octadecyl acrylate, 5% of cocamidopropyl amine oxide and 3% of a two-liquid type base material, the second coating comprises 6% of 3-methacryloxypropyl methyl dimethoxy silane, 3% of a two-liquid type base material, 8% of fatty alcohol polyoxyethylene ether and 11% of sorbitan fatty acid ester, and the two-liquid type base material is calculated according to the mass percent of the leather material.
The preparation method of the animal-grain two-color leather comprises the following steps:
step one, preparing a coating:
s11, preparing a first coating:
according to the mass percentage, the isooctanol polyoxyethylene ether phosphate, the octadecyl acrylate, the cocamidopropyl amine oxide and the two-liquid type base material are mixed and stirred uniformly to obtain a first coating, and when the first coating is coated, the coating temperature is 80 ℃, the coating speed is 7m/min, and the coating pressure is 0.5 kg.
S12, preparing a second coating:
and according to the mass percentage, uniformly stirring and mixing the 3-methacryloxypropylmethyldimethoxysilane, the fatty alcohol-polyoxyethylene ether, the sorbitan fatty acid ester and the two-liquid type base material to obtain a second coating, wherein the coating temperature is 70 ℃, the coating speed is 5m/min, and the coating pressure is 1kg when the second coating is coated.
Step two, coating a coating:
coating the second coating obtained in the step one on release paper through a coating roller to form a second coating layer to obtain coated release paper, then coating the first coating obtained in the step one on the obtained second coating layer through the coating roller to form a first coating layer to obtain the second coated release paper, and in the coating process, arranging regular convex blocks on the surface of the coating roller to form lines with regular shapes during coating, wherein the lines have concave-convex feeling, strong stereoscopic impression and good hand feeling;
step three, leather sticking:
and (3) attaching the leather material to the obtained first coating layer to obtain the leather material for leather attachment, wherein the pressure during leather attachment is 3-4 kg.
Step four, baking:
and (3) peeling the release paper on the leather material of the veneer gluing obtained in the step three, then baking, and naturally cooling to obtain the animal-grain two-color leather, wherein the baking temperature is 80 ℃, and the drying time is 60 min.
Example 2
Animal-grain double-color leather comprises a leather material, a first coating and a second coating, wherein the first coating and the second coating are sequentially attached to the leather material, the first coating comprises 12% of isooctanol polyoxyethylene ether phosphate, 5% of octadecyl acrylate, 6% of cocamidopropyl amine oxide and 4% of a two-liquid type backing material, the second coating comprises 7% of 3-methacryloxypropyl methyl dimethoxy silane, 4% of a two-liquid type backing material, 9% of fatty alcohol polyoxyethylene ether and 12% of sorbitan fatty acid ester, and the two-liquid type backing material are calculated according to the mass percentage of the leather material.
The preparation method of the animal-grain two-color leather comprises the following steps:
step one, preparing a coating:
s11, preparing a first coating:
according to the mass percentage, the isooctanol polyoxyethylene ether phosphate, the octadecyl acrylate, the cocamidopropyl amine oxide and the two-liquid type base material are mixed and stirred uniformly to obtain a first coating, when the first coating is coated, the coating temperature is 85 ℃, the coating speed is 8m/min, and the coating pressure is 0.6 kg.
S12, preparing a second coating:
and according to the mass percentage, uniformly stirring and mixing the 3-methacryloxypropylmethyldimethoxysilane, the fatty alcohol-polyoxyethylene ether, the sorbitan fatty acid ester and the two-liquid type base material to obtain a second coating, wherein the coating temperature is 75 ℃, the coating speed is 6m/min, and the coating pressure is 2kg when the second coating is coated.
Step two, coating a coating:
coating the second coating obtained in the step one on release paper through a coating roller to form a second coating layer to obtain coated release paper, then coating the first coating obtained in the step one on the obtained second coating layer through the coating roller to form a first coating layer to obtain the second coated release paper, and in the coating process, arranging regular convex blocks on the surface of the coating roller to form lines with regular shapes during coating, wherein the lines have concave-convex feeling, strong stereoscopic impression and good hand feeling;
step three, leather sticking:
and (3) attaching the leather material to the obtained first coating layer to obtain the leather material for leather attachment, wherein the pressure during leather attachment is 3-4 kg.
Step four, baking:
and (3) peeling the release paper on the leather material of the veneer gluing obtained in the step three, then baking, and naturally cooling to obtain the animal-grain two-color leather, wherein the baking temperature is 85 ℃, and the drying time is 80 min.
Example 3
Animal-grain double-color leather comprises a leather material, a first coating and a second coating, wherein the first coating and the second coating are sequentially attached to the leather material, the first coating comprises 13% of isooctanol polyoxyethylene ether phosphate, 6% of octadecyl acrylate, 7% of cocamidopropyl amine oxide and 5% of a two-liquid primer, the second coating comprises 8% of 3-methacryloxypropyl methyldimethoxysilane, 5% of a two-liquid primer, 11% of fatty alcohol polyoxyethylene ether and 12% of sorbitan fatty acid ester, and the three-liquid primer are calculated according to the mass percentage of the leather material.
The preparation method of the animal-grain two-color leather comprises the following steps:
step one, preparing a coating:
s11, preparing a first coating:
according to the mass percentage, the isooctanol polyoxyethylene ether phosphate, the octadecyl acrylate, the cocamidopropyl amine oxide and the two-liquid type base material are mixed and stirred uniformly to obtain a first coating, and when the first coating is coated, the coating temperature is 90 ℃, the coating speed is 8m/min, and the coating pressure is 0.8 kg.
S12, preparing a second coating:
and according to the mass percentage, uniformly stirring and mixing the 3-methacryloxypropylmethyldimethoxysilane, the fatty alcohol-polyoxyethylene ether, the sorbitan fatty acid ester and the two-liquid type base material to obtain a second coating, wherein the coating temperature is 75 ℃, the coating speed is 7m/min, and the coating pressure is 2kg when the second coating is coated.
Step two, coating a coating:
coating the second coating obtained in the step one on release paper through a coating roller to form a second coating layer to obtain coated release paper, then coating the first coating obtained in the step one on the obtained second coating layer through the coating roller to form a first coating layer to obtain the second coated release paper, and in the coating process, arranging regular convex blocks on the surface of the coating roller to form lines with regular shapes during coating, wherein the lines have concave-convex feeling, strong stereoscopic impression and good hand feeling;
step three, leather sticking:
and (3) attaching the leather material to the obtained first coating layer to obtain the leather material for leather attachment, wherein the pressure during leather attachment is 3-4 kg.
Step four, baking:
and (3) peeling off the release paper on the leather material adhered with the leather obtained in the step three, then baking, and naturally cooling to obtain the animal-grain two-color leather, wherein the baking temperature is 85 ℃, and the drying time is 90 min.
The animal grain two-color leather prepared in the embodiments 1-3 of the invention is subjected to performance detection, wherein:
the softness testing method comprises the following steps:
sampling according to the sampling mode of ISO 2418-;
secondly, testing color fastness:
color fastness test was performed by using a manual crocking decolorant GT-7034-B manufactured by Goodywell detection instruments (Qingdao) Co., Ltd.;
thirdly, testing the abrasion performance:
the leather abrasion test is carried out by an universal abrasion tester GT-7012-S manufactured by Shenzhen Yinfei electronic technology Limited;
fourthly, testing tension:
the tensile test was conducted by a tensile tester GT-7010-EP sold by Shandong Ziquan Instrument sales center.
Fifthly, testing yellowing resistance:
and (4) carrying out a yellowing resistance test by a yellowing resistance tester.
The fireproof leather obtained in the embodiments 1 to 3 of the invention is detected by a tensile testing machine, a yellowing resistance testing machine and a universal abrasion testing machine, and the detection results are shown in the following table 1;
table 1: examples 1-3 test results for fire-resistant leather:
as can be seen from Table 1, the animal grain two-color leather prepared by the preparation method of the invention has the advantages that the softness can reach 4.5 grades, the tensile strength can reach transverse 26MPa and longitudinal 27MPa, the friction fading reaches 4 grades, the color fastness is very high, and the yellowing resistance is strong.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (4)
1. The animal grain double-color leather is characterized by comprising a leather material, a first coating and a second coating, wherein the first coating and the second coating are sequentially attached to the leather material, the first coating comprises 11-13% of isooctanol polyoxyethylene ether phosphate, 4-6% of octadecyl acrylate, 5-7% of cocamidopropyl amine oxide and 3-5% of a two-liquid primer according to the mass percentage of the leather material, and the second coating comprises 6-8% of 3-methacryloxypropyl methyldimethoxysilane, 3-5% of the two-liquid primer, 8-11% of fatty alcohol polyoxyethylene ether and sorbitan fatty acid ester according to the mass percentage of the leather material;
the preparation method of the animal-grain two-color leather comprises the following steps:
step one, preparing a coating:
s11, preparing a first coating:
according to the mass percentage, uniformly mixing and stirring the isooctanol polyoxyethylene ether phosphate, the octadecyl acrylate, the cocamidopropyl amine oxide and the two-liquid type primer to obtain a first coating;
s12, preparing a second coating:
according to the mass percentage, stirring and uniformly mixing the 3-methacryloxypropyl methyldimethoxysilane, the fatty alcohol-polyoxyethylene ether, the sorbitan fatty acid ester and the two-liquid type base material to obtain a second coating;
step two, coating a coating:
coating the second coating obtained in the step one on release paper through a coating roller to form a second coating layer to obtain coated release paper, and then coating the first coating obtained in the step one on the obtained second coating layer through the coating roller to form a first coating layer to obtain coated release paper;
step two, when a second coating is coated, the coating temperature is 70-75 ℃, the coating speed is 5-7 m/min, and the pressure during coating is 1-2 kg;
step two, when the first coating is coated, the coating temperature is 80-90 ℃, the coating speed is 7-8 m/min, and the pressure during coating is 0.5-0.8 kg;
step three, leather sticking:
attaching a leather material to the obtained first coating layer to obtain a leather material for attaching leather;
step four, baking:
stripping the release paper on the leather material, baking, and naturally cooling to obtain animal-grain double-color leather;
wherein, the surface of the coating roller is provided with bumps.
2. The animal-grain two-color leather of claim 1, wherein the arrangement of the bumps on the surface of the coating roller is one of a regular arrangement or an irregular arrangement.
3. The animal-grain two-color leather according to claim 1, wherein the pressure during leather attachment is 3-4 kg.
4. The animal grain bicolor leather according to claim 1, wherein the baking temperature in the fourth step is 80-85 ℃, and the baking time is 60-90 min.
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| CN109097511B true CN109097511B (en) | 2021-04-27 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1904202A (en) * | 2005-07-27 | 2007-01-31 | 三芳化学工业股份有限公司 | High wear resistant brilliant artificial leather and its manufacturing method |
| CN201979742U (en) * | 2011-01-11 | 2011-09-21 | 杭州奇达皮革有限公司 | Bicolor scale pattern leather with painting effect layer |
| CN203427384U (en) * | 2013-07-24 | 2014-02-12 | 焦秉杰 | Novel embroidery leather |
| CN104531920A (en) * | 2014-12-31 | 2015-04-22 | 东莞市天逸皮业有限公司 | Preparing method for pearlescent leather |
-
2018
- 2018-09-10 CN CN201811051315.3A patent/CN109097511B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1904202A (en) * | 2005-07-27 | 2007-01-31 | 三芳化学工业股份有限公司 | High wear resistant brilliant artificial leather and its manufacturing method |
| CN201979742U (en) * | 2011-01-11 | 2011-09-21 | 杭州奇达皮革有限公司 | Bicolor scale pattern leather with painting effect layer |
| CN203427384U (en) * | 2013-07-24 | 2014-02-12 | 焦秉杰 | Novel embroidery leather |
| CN104531920A (en) * | 2014-12-31 | 2015-04-22 | 东莞市天逸皮业有限公司 | Preparing method for pearlescent leather |
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