阅读说明：本技术 一种鸵鸟纹皮革的制作方法 (Manufacturing method of ostrich grain leather ) 是由 陈剑雄 于 2020-08-05 设计创作，主要内容包括：本发明公开了一种鸵鸟纹皮革的制作方法,包括以下步骤：步骤(1)：生皮；步骤(2)：蓝皮；步骤(3)：削匀；步骤(4)：复鞣；步骤(5)：中和；步骤(6)：染色；步骤(7)：加油；步骤(8)：填充；步骤(9)：干燥；步骤(10)：整理；步骤(11)：涂饰,将颜料轻轻地喷在皮料的表面,然后将粒面表面部分磨去,再将磨好的皮料烫平、刷浆料、挂干；步骤(12)：压纹,用压鸵鸟纹的花板对皮料进行压纹处理；步骤(13)：喷面浆；步骤(14)：擦色,烫光,振软；步骤(15)：绷板,修边,制得成品。本发明制得的皮革样色独特,整体质感强,耐磨,抗拉强度大,透气性好,抗老化能力强,产品的表面长期保持光亮如新。(The invention discloses a method for manufacturing ostrich grain leather, which comprises the following steps: step (1): raw hide; step (2): blue leather; and (3): shaving evenly; and (4): retanning; and (5): neutralizing; and (6): dyeing; and (7): oiling; and (8): filling; and (9): drying; step (10): finishing; step (11): coating, namely slightly spraying the pigment on the surface of the leather, then grinding off the surface part of the grain surface, and then ironing the ground leather, brushing slurry and hanging to dry; step (12): embossing, namely embossing the leather by using a pattern plate for embossing ostrich patterns; step (13): spraying surface slurry; step (14): rubbing, ironing and softening; step (15): and (5) stretching and trimming to obtain a finished product. The leather prepared by the invention has unique color, strong integral texture, wear resistance, high tensile strength, good air permeability and strong anti-aging capability, and the surface of the product can keep bright as new for a long time.)

1. A manufacturing method of ostrich grain leather is characterized by comprising the following steps: the method comprises the following steps:

step (1): for peltry, soft skin materials are taken, and the skin body is required to be full, soft and slightly super-fiber;

step (2): blue leather, putting leather into a rotary drum, sequentially adding 0.2-0.3 part of formic acid and 0.2-0.3 part of grease stabilizer according to the parts by mass, keeping the pH value at 3.2-3.4, and rotating for 85-95 min;

and (3): shaving, pressing water on the leather, and shaving to a thickness of 1.15-1.2 mm;

and (4): retanning, adding 4-6 parts of chrome tanning powder and 1.4-1.6 parts of synthetic retanning agent, rotating for 55-65min, adding 1.5-2.5 parts of retanning agent and 0.8-1.2 parts of fatliquoring agent, continuing to rotate for 25-35min, then adding 1.4-1.6 parts of sodium formate and 0.4-0.6 part of sodium bicarbonate, keeping the pH value at 3.5-3.7, rotating for 55-65min, stopping rotating, and standing for 8-10 h;

and (5): neutralizing, adding 1.1-1.5 parts of neutral tannin and 1.1-1.5 parts of sodium formate, rotating for 45-55min, keeping pH at 4.8-4.9, adding 1.1-1.5 parts of synthetic tanning agent and 0.3-0.5 part of sodium bicarbonate, and rotating for 50-55 min;

and (6): dyeing, adding 1.1-1.4 parts of dye, keeping pH at 3.2-3.4, and rotating at 45-50 deg.C for 56-62 min;

and (7): adding oil, adding 1.3-1.7 parts of phospholipid complex fatting agent, 1.3-1.5 parts of synthetic fatting agent, 2.3-2.5 parts of fish oil and 2.2-2.4 parts of lecithin, and rotating at 55-60 deg.C for 58-62 min;

and (8): filling, adding 1.1-1.4 parts of acrylic resin retanning agent, 1.2-1.3 parts of modified acrylic resin retanning agent, 2.5-3.5 parts of melamine resin, 2.5-3.5 parts of auxiliary synthetic tanning agent, 2.5-3.5 parts of wattle bark tannin extract, 2.3-2.5 parts of tara tannin extract, 2.8-3.2 parts of protein filler, 1.8-2.1 parts of dicyandiamide resin, 1.2-1.5 parts of waterproof fatting agent, 1.2-1.5 parts of disperse tannin, 1.2-1.5 parts of aqueous dispersant and 3-4 parts of dye, and rotating for 35-40 min;

and (9): drying, wherein the drying process comprises squeezing, stretching, vacuum and hanging;

step (10): finishing, wherein the finishing process comprises repairing injury, buffing, breaking and pulling a net;

step (11): coating, namely slightly spraying pigment on the surface of the leather to enable the surface color of the leather to be uniform and cover some original flaws, then grinding off the surface part of the grain surface to reduce the influence of the grain surface flaws, and then ironing, brushing slurry and hanging to dry the ground leather;

step (12): embossing, namely embossing the leather by using a pattern plate for embossing ostrich patterns;

step (13): spraying surface slurry;

step (14): rubbing, ironing and softening;

step (15): and (5) stretching and trimming to obtain a finished product.

2. The method for producing ostrich grain leather according to claim 1, characterized in that: in the step (12), the working temperature for pressing the ostrich veins is 95-105 ℃, the working pressure is 170-190KG, and the working time is 4-6 s.

3. The method for producing ostrich grain leather according to claim 1, characterized in that: in the step (9), the pressure for squeezing and stretching is 3-5 Pa.

4. The method for producing ostrich grain leather according to claim 1, characterized in that: in the step (9), the temperature of the vacuum is 50-60 ℃, and the time of the vacuum is 110-130 s.

5. The method for producing ostrich grain leather according to claim 1, characterized in that: in the step (9), the hanging and airing are carried out by using hanging and airing equipment and are naturally dried.

6. The method for producing ostrich grain leather according to claim 1, characterized in that: in the step (3), the water pressing pressure is 0.3-0.5Pa, and the water pressing speed is 11-13 m/s.

7. The method for producing ostrich grain leather according to claim 1, characterized in that: and (14) vibrating and softening the leather to 4-5 levels by a vibrating and softening machine.

8. The method for producing ostrich grain leather according to claim 1, characterized in that: in the step (10), the time for milling is 1-2 h.

Technical Field

The invention relates to the technical field of leather, and particularly relates to a manufacturing method of ostrich grain leather.

Background

The leather produced by the method has no characteristics, is not strong in integral texture, is not wear-resistant, small in tensile strength, insufficient in flexibility, poor in air permeability and easy to age, and the surface of the product is not bright after the leather is used for a period of time, so that the leather has an old feeling. Therefore, there is a need for improvements in the prior art to avoid the disadvantages of the prior art.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a method for manufacturing ostrich grain leather.

The invention is realized by the following technical scheme:

a manufacturing method of ostrich leather comprises the following steps:

step (1): for peltry, soft skin materials are taken, and the skin body is required to be full, soft and slightly super-fiber;

step (2): blue leather, putting leather into a rotary drum, sequentially adding 0.2-0.3 part of formic acid and 0.2-0.3 part of grease stabilizer according to the parts by mass, keeping the pH value at 3.2-3.4, and rotating for 85-95 min;

and (3): shaving, pressing water on the leather, and shaving to a thickness of 1.15-1.2 mm;

and (4): retanning, adding 4-6 parts of chrome tanning powder and 1.4-1.6 parts of synthetic retanning agent, rotating for 55-65min, adding 1.5-2.5 parts of retanning agent and 0.8-1.2 parts of fatliquoring agent, continuing to rotate for 25-35min, then adding 1.4-1.6 parts of sodium formate and 0.4-0.6 part of sodium bicarbonate, keeping the pH value at 3.5-3.7, rotating for 55-65min, stopping rotating, and standing for 8-10 h;

and (5): neutralizing, adding 1.1-1.5 parts of neutral tannin and 1.1-1.5 parts of sodium formate, rotating for 45-55min, keeping pH at 4.8-4.9, adding 1.1-1.5 parts of synthetic tanning agent and 0.3-0.5 part of sodium bicarbonate, and rotating for 50-55 min;

and (6): dyeing, adding 1.1-1.4 parts of dye, keeping pH at 3.2-3.4, and rotating at 45-50 deg.C for 56-62 min;

and (7): adding oil, adding 1.3-1.7 parts of phospholipid complex fatting agent, 1.3-1.5 parts of synthetic fatting agent, 2.3-2.5 parts of fish oil and 2.2-2.4 parts of lecithin, and rotating at 55-60 deg.C for 58-62 min;

and (8): filling, adding 1.1-1.4 parts of acrylic resin retanning agent, 1.2-1.3 parts of modified acrylic resin retanning agent, 2.5-3.5 parts of melamine resin, 2.5-3.5 parts of auxiliary synthetic tanning agent, 2.5-3.5 parts of wattle bark tannin extract, 2.3-2.5 parts of tara tannin extract, 2.8-3.2 parts of protein filler, 1.8-2.1 parts of dicyandiamide resin, 1.2-1.5 parts of waterproof fatting agent, 1.2-1.5 parts of disperse tannin, 1.2-1.5 parts of aqueous dispersant and 3-4 parts of dye, and rotating for 35-40 min;

and (9): drying, wherein the drying process comprises squeezing, stretching, vacuum and hanging;

step (10): finishing, wherein the finishing process comprises repairing injury, buffing, breaking and pulling a net;

step (11): coating, namely slightly spraying pigment on the surface of the leather to enable the surface color of the leather to be uniform and cover some original flaws, then grinding off the surface part of the grain surface to reduce the influence of the grain surface flaws, and then ironing, brushing slurry and hanging to dry the ground leather;

step (12): embossing, namely embossing the leather by using a pattern plate for embossing ostrich patterns;

step (13): spraying surface slurry;

step (14): rubbing, ironing and softening;

step (15): and (5) stretching and trimming to obtain a finished product.

Further, in the step (12), the working temperature for pressing the ostrich veins is 95-105 ℃, the working pressure is 170-190KG, and the working time is 4-6 s.

Further, in the step (9), the pressure for squeezing and stretching is 3-5 Pa.

Further, in the step (9), the temperature of the vacuum is 50-60 ℃, and the time of the vacuum is 110-130 s.

Further, in the step (9), the hanging and airing is carried out by using a hanging and airing device and naturally drying.

Further, in the step (3), the water pressing pressure is 0.3-0.5Pa, and the water pressing speed is 11-13 m/s.

Further, in the step (14), the vibration softening machine vibrates and softens the leather to 4-5 grades.

Further, in the step (10), the time for milling is 1-2 h.

Compared with the prior art, the leather is dried, finished, coated, embossed, sprayed with the face paste, wiped, scalded and softened, so that the leather has unique color, is easy to realize diversified styles, has strong integral texture, high wear resistance, high tensile strength, good flexibility, good air permeability and strong anti-aging capability, can be used for a long time, keeps the surface of the product bright as new, and gives people a brand new feeling.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A manufacturing method of ostrich leather comprises the following steps:

step (1): for peltry, soft skin materials are taken, and the skin body is required to be full, soft and slightly super-fiber;

step (2): blue leather, putting leather into a rotary drum, sequentially adding 0.2-0.3 part of formic acid and 0.2-0.3 part of grease stabilizer according to the parts by mass, keeping the pH value at 3.2-3.4, and rotating for 85-95 min;

and (3): shaving, pressing water into the leather material, wherein the pressing water pressure is 0.3-0.5Pa, the pressing water speed is 11-13m/s, and then shaving, wherein the shaving thickness is required to be 1.15-1.2 mm;

and (4): retanning, adding 4-6 parts of chrome tanning powder and 1.4-1.6 parts of synthetic retanning agent, rotating for 55-65min, adding 1.5-2.5 parts of retanning agent and 0.8-1.2 parts of fatliquoring agent, continuing to rotate for 25-35min, then adding 1.4-1.6 parts of sodium formate and 0.4-0.6 part of sodium bicarbonate, keeping the pH value at 3.5-3.7, rotating for 55-65min, stopping rotating, and standing for 8-10 h;

and (5): neutralizing, adding 1.1-1.5 parts of neutral tannin and 1.1-1.5 parts of sodium formate, rotating for 45-55min, keeping pH at 4.8-4.9, adding 1.1-1.5 parts of synthetic tanning agent and 0.3-0.5 part of sodium bicarbonate, and rotating for 50-55 min;

and (6): dyeing, adding 1.1-1.4 parts of dye, keeping pH at 3.2-3.4, and rotating at 45-50 deg.C for 56-62 min;

and (7): adding oil, adding 1.3-1.7 parts of phospholipid complex fatting agent, 1.3-1.5 parts of synthetic fatting agent, 2.3-2.5 parts of fish oil and 2.2-2.4 parts of lecithin, and rotating at 55-60 deg.C for 58-62 min;

and (8): filling, adding 1.1-1.4 parts of acrylic resin retanning agent, 1.2-1.3 parts of modified acrylic resin retanning agent, 2.5-3.5 parts of melamine resin, 2.5-3.5 parts of auxiliary synthetic tanning agent, 2.5-3.5 parts of wattle bark tannin extract, 2.3-2.5 parts of tara tannin extract, 2.8-3.2 parts of protein filler, 1.8-2.1 parts of dicyandiamide resin, 1.2-1.5 parts of waterproof fatting agent, 1.2-1.5 parts of disperse tannin, 1.2-1.5 parts of aqueous dispersant and 3-4 parts of dye, and rotating for 35-40 min;

and (9): drying, wherein the drying process comprises squeezing, stretching, vacuum and hanging; the pressure of water squeezing and stretching is 3-5Pa, the temperature of vacuum is 50-60 ℃, the time of vacuum is 110-130s, and the hanging and drying are carried out naturally by using hanging and drying equipment;

step (10): finishing, wherein the finishing process comprises repairing injury, buffing, breaking and pulling a net, wherein the breaking time is 1-2 h;

step (11): coating, namely slightly spraying pigment on the surface of the leather to enable the surface color of the leather to be uniform and cover some original flaws, then grinding off the surface part of the grain surface to reduce the influence of the grain surface flaws, and then ironing, brushing slurry and hanging to dry the ground leather;

step (12): embossing, namely embossing the leather by using a pattern plate for embossing ostrich patterns; the working temperature for pressing the ostrich grains is 95-105 ℃, the working pressure is 170-190KG, the working time is 4-6s, as a preferred embodiment, the working temperature for pressing the ostrich grains is 100 ℃, the working pressure is 180KG, the working time is 5s, the lines of the pressed ostrich grains are clear, the patterns are convex, meanwhile, the internal tissue structure of the leather is not damaged, and the strength of the leather is ensured.

Step (13): spraying surface slurry;

step (14): rubbing, ironing, vibrating to soften, and vibrating to soften the leather to 4-5 level by a vibrating softening machine;

step (15): and (5) stretching and trimming to obtain a finished product.

Compared with the prior art, the leather is dried, finished, coated, embossed, sprayed with the face paste, wiped, scalded and softened, so that the leather has unique color, is easy to realize diversified styles, has strong integral texture, high wear resistance, high tensile strength, good flexibility, good air permeability and strong anti-aging capability, can be used for a long time, keeps the surface of the product bright as new, and gives people a brand new feeling.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.