CN111057804B - Patterned leather manufacturing method, leather and leather product - Google Patents
Patterned leather manufacturing method, leather and leather product Download PDFInfo
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- CN111057804B CN111057804B CN202010001045.6A CN202010001045A CN111057804B CN 111057804 B CN111057804 B CN 111057804B CN 202010001045 A CN202010001045 A CN 202010001045A CN 111057804 B CN111057804 B CN 111057804B
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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
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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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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/41—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using basic dyes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/32—Material containing basic nitrogen containing amide groups leather skins
- D06P3/324—Material containing basic nitrogen containing amide groups leather skins using basic dyes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a patterned leather manufacturing method, leather and leather products, comprising 150 parts of liquid sodium silicate 100, 10-50 parts of water, 10-20 parts of flatting agent and 10-20 parts of plasticizer; the effect slurry has good adhesion, film forming property and uniform fluidity, can form a uniform effect slurry layer on the grain surface of leather, and is easy to crack and wash after being dried; based on the effect slurry, the pattern leather manufacturing method is also disclosed, the problems of single grain pattern, uncontrollable pattern shape and distribution and the like of the leather in the prior art are solved, and the prior leather sealing step is omitted; the grain surface of the patterned leather prepared by the method is complete and clear, the patterns are natural and rapid, the body and the bone are soft and plump and elastic, each physical and chemical index meets the industrial standard, the patterned leather is a high-end, atmosphere, individual and fashionable leather product with special effect, can be used for manufacturing vamps, bags, home decorations and the like, has good application prospect, and is worthy of popularization and application.
Description
Technical Field
The invention relates to the technical field of leather-making chemistry and leather-making engineering, in particular to a patterned leather manufacturing method, leather and a leather product.
Background
With the development of social economy and the improvement of living standard, people have increasingly abundant material life, which not only requires the leather and the products thereof to have good natural characteristics, but also increasingly outstanding requirements on the individuation and fashion of the leather and the products thereof, and the figured leather is favored by people as a high-grade leather product with special effect.
Currently, patterned leather mainly has several manufacturing methods:
firstly, film pasting printing, for example, the application number is CN201510380498.3, a production process of pattern leather is disclosed, patterns on film pasting paper are transferred to the surface of a leather coating, and then recoating decoration is carried out to protect the patterns;
secondly, buffing and pattern forming, for example, the prior patent application CN201510705062.7 of the applicant discloses a method for manufacturing fragrant pattern leather, which utilizes a buffing machine to grind different stripes on the grain surface of the leather, and then carries out color-developing coating to ensure that the leather shows the geometric pattern effect.
Thirdly, as application number CN201010196748.5 discloses a manufacturing process of unrepeatable pattern leather, the manufacturing process comprises the following steps: the leather after dry finishing is subjected to the following treatment steps for one time:
sealing the leather: 100 parts of cationic handfeel wax WX-4850 and 100 parts of water, spraying for 2 times, drying and ironing.
Isolation layer: 100 parts of casein PR-4521 and 50 parts of water, spraying for 2 times, drying, ironing and softening.
An effect layer: spraying 50 parts of dye water LD-8000 and 150 parts of isopropanol for 2 times, and drying; washing with water in the rotary drum and drying.
And (3) fixation: 100 parts of hand feeling type water-based gloss oil LW-7740, 20 parts of water-based hand feeling agent HW-6658 and 100 parts of water are sprayed for 1 time, and then the mixture is softened and ironed.
However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems:
the first method usually needs a thicker coating layer, so that natural grains on the grain surface of the leather can be covered, and the leather has strong plastic feeling;
the second method needs to grind the grain surface of the leather, which can damage the natural grains and traces on the grain surface of the leather and damage the unique characteristics of the leather as a natural material;
the third method, while not damaging the natural texture on the inside of the leather, also brings new problems. The third method uses casein as isolating layer, which is a kind of anionic natural protein material with good adhesion and film forming property, and its coating layer has certain flexibility and extensibility, and can be cracked only by very large mechanical action, and the cracked crack is usually crack-shaped and single-grain. In addition, casein has anionic active groups such as carboxyl and the like, the surface of chrome tanned crust leather has positive electricity, and the casein cannot be directly coated (the anionic active groups such as the carboxyl and the like of the casein can coordinate with chromium in the leather, so that the casein can permeate and combine to the grain surface, the adhesive force is enhanced, the film forming property is influenced, the adhesiveness is too strong and is not easy to crack and wash), therefore, before coating the casein, a layer of cationic handfeel wax is coated for sealing the leather, so that the anionic active groups such as the carboxyl and the like contained in the casein are combined with the cationic handfeel agent and are not directly combined with the crust leather, the adhesiveness is reduced, and the film forming property is enhanced; however, the cationic property of the cationic handfeel wax is combined with the electronegative ions carried by the subsequent dyes (amphoteric metal complex dyes, namely, dyes with electronegative ions and positively charged ions) to influence the combination of the dyes and the grain surface of the crust leather, so that the combination amount of the dyes and the crust leather is small and the combination is not firm.
Disclosure of Invention
The embodiment of the application provides the effect slurry for the leather and the pattern leather manufacturing method based on the effect slurry, solves the problems that grain patterns are single and the pattern shapes and distribution are uncontrollable and the like caused by the fact that crust leather is isolated by casein in the prior art, achieves the effect that leather sealing is not needed before the effect slurry is coated, and further avoids influencing the combination of dye and crust leather.
The embodiment of the application provides effect slurry for leather, which comprises 150 parts of liquid sodium silicate 100, 10-50 parts of water, 10-20 parts of a flatting agent and 10-20 parts of a plasticizer.
Further, the leveling agent is a polysiloxane leveling agent;
the plasticizer is a nonionic water-soluble plasticizer;
the modulus of the liquid sodium silicate is 2.6-3.6, and the density is 1.2-1.5 g/mL.
A method for manufacturing patterned leather comprises the following steps: preparing crust leather → coating effect pulp → drying oven → effect pattern → coating dyeing pulp → washing pulp → after finishing;
the preparation method of the effect paste in the effect paste coating process comprises the following steps: uniformly mixing 150 parts of liquid sodium silicate 100, 10-50 parts of water, 10-20 parts of flatting agent and 10-20 parts of plasticizer.
Further, the method also comprises a color fixing pulp coating procedure, wherein the color fixing pulp coating procedure is positioned after the dyeing pulp coating procedure and before the pulp washing procedure.
Furthermore, the coating effect slurry process adopts a spraying or roll coating method, and the coating amount is 20-40 g/SF;
the effect texture working procedure adopts a manual kneading method or a mechanical vibration method to process crust leather.
Further, the step of coating dyeing slurry adopts spraying or brushing, the coating amount is 5-20g/SF, and the mixture is kept stand for 30-90min after being coated;
the color fixing slurry coating procedure and the dyeing slurry coating procedure have the same coating method, coating amount and standing time;
the dyeing slurry in the dyeing slurry coating procedure comprises the following steps: 5-20 parts of cationic dye, 100-150 parts of water and 10-20 parts of penetrating agent;
the color fixing slurry in the color fixing slurry coating procedure comprises 10-20 parts of color fixing agent, 100 parts of water and 150 parts of formic acid and 5-15 parts of formic acid.
Further, the pulp washing process comprises the following specific operation steps: adding water at 25-35 deg.C 150-; adding 1-2% of hand feeling agent, rotating for 10-20min, and discharging liquid;
the post-finishing process comprises the steps of hanging and airing the crust leather prepared in the previous process, vibrating and softening, breaking and softening, toggling and coating.
The invention also provides leather which can be obtained by the method disclosed by the invention, the grain surface of the leather produced by the method is clear, the patterns are natural and running, and the body and the bone are soft, plump and elastic.
The leather of the invention can be used for manufacturing various vamps, bags and home decorations, and the patterns on the surface of the leather make the leather stand out in a plurality of leather products, especially the application in the vamp aspect, and the leather can be used for manufacturing vamps of casual shoes, sports shoes, board shoes and the like.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. the main component of the effect slurry is liquid sodium silicate, the liquid sodium silicate is a strong alkali weak acid salt, does not contain active groups capable of being combined with crust leather, has larger adhesion, is beneficial to bonding the effect slurry on grain surfaces to form a film, and the leveling agent and the plasticizer can enhance the film forming property and uniform fluidity of the effect slurry so as to form a uniform effect slurry layer on the grain surfaces; the effect slurry layer is only adhered to the grain surface of the crust leather without the combination of chemical bonds, so the effect layer is easy to crack and wash after being dried; the existing leather sealing step is omitted, so that the combination of dye and crust leather is avoided being influenced, and the patterns are more beautiful, natural and prominent.
2. The effect pulp has no adverse effect on the dyeing pulp and the color fixing agent, the liquid sodium silicate is transparent liquid, the effect pulp layer is transparent and colorless, and the effect pulp layer can not adsorb dye, so that the dyeing pulp and the color fixing pulp can naturally extend from cracks to the surface of the crust leather grains to be combined.
3. In the prior art, after dyeing and drying, water washing is directly carried out, although casein can be removed, dyes attached to the grain surface of crust leather can be washed away, and unadsorbed dyes can also be diffused to other uncolored places on the grain surface in the water washing process, so that the patterned leather is adversely affected, and the attractiveness and value are affected; the invention adopts the method of fixing color firstly and then washing, the dye is fixed firstly to form patterns, and formic acid is added during washing to further fix the dye, thereby improving the fastness of the dyed patterns.
4. The method for preparing the pattern leather does not wear the natural grain surface of the leather in the implementation process, and the effect layer is removed without increasing the thickness of the coating, so that the natural grain and trace existing in the leather are not lost, the unique characteristics of the leather as a natural material are not damaged, the prepared natural pattern effect leather has complete and clear natural grain surface, and the natural characteristics of the leather can be more highlighted.
5. In the prior art, the obtained patterns are single, and the shape, size, tightness, distribution and the like of the obtained patterns cannot be controlled; the shape and size, the tightness degree, the distribution condition and the like of the grain pattern can be controlled and adjusted through the action degree, the mode and the position manually or mechanically, the color of the pattern can be controlled through the type of cationic dye, and the method is convenient, simple and controllable to operate, so that the prepared natural pattern effect leather has unique pattern styles of different types and colors, is better personalized and fashionable, better accords with market trend, and meets different customer requirements.
6. The natural grain surface pattern effect leather prepared by the method has complete and clear grain surface, natural and running patterns, soft, plumpy and elastic body bones, various physical and chemical indexes meeting the industrial standard, is a high-end, atmospheric, individual and fashionable special effect leather product, can be used for manufacturing shoes, bags, home ornaments and the like, has good application prospect, and is worthy of popularization and application.
7. The effect slurry is uniformly coated on the grain surface of the leather, and a layer of effect slurry layer is formed after drying, so that the effect slurry has the characteristics of being dry and brittle, easy to crack, water-proof and the like; then, manually kneading or mechanically oscillating is adopted to lead the effect slurry layer to be cracked, and natural cracks with different shapes are formed; then sequentially and uniformly coating the dyeing slurry and the color fixing on the cracked effect slurry layer, enabling the dyeing slurry and the color fixing slurry to sequentially penetrate into the grain surface of the crust leather through the cracked grains of the effect layer, fixing the dyeing slurry on the grain surface of the crust leather by the color fixing slurry, and forming natural effect patterns on the grain surface of the crust leather; and finally, washing the crust leather by using the characteristic that the effect slurry layer is not water-resistant, and removing the effect slurry layer to obtain the leather with the personalized and fashionable unique natural pattern effect.
Detailed Description
In order to better understand the technical scheme, the technical scheme is described in detail in the specification and the specific embodiment, and it is specifically noted that the effect pulp of the invention is not a proper noun in the field, but is a self-made word of the applicant, and is a summary of specific components of the effect pulp of the invention.
Example 1:
preparing chrome-free tanned crust leather: chrome-free tanned crust leather is prepared by adopting a chrome-free tanning technology system based on a non-metal tanning agent (amphoteric organic synthetic tanning agent TWS of Tingjiang chemical company).
Coating effect slurry: coating effect slurry on the grain surface of the crust leather obtained in the previous procedure, and spraying for 2-3 times by using a pulp sprayer, wherein the coating amount is 30 g/SF; the effect slurry is prepared by uniformly mixing 120 parts of liquid sodium silicate (liquid sodium silicate of Wudu trade company, the modulus is 3.1-3.4, and the density is 1.30-1.35g/mL), 40 parts of water, 10 parts of a flatting agent (LA-1688 of Stahl chemical engineering) and 15 parts of a plasticizer (SFT HG of Apa chemical engineering company).
Drying in an oven: and (3) drying the crust leather obtained in the previous step in an oven, wherein the temperature of the oven is set to be 80 ℃, and the time is 2 hours.
Benefit generating lines: and manually kneading the crust leather obtained in the previous procedure to crack the effect slurry layer to form natural cracks.
Coating dyeing slurry: manually brushing for 1-2 times, wherein the coating amount is 10g/SF, and standing for 60min after brushing; the dyeing pulp is prepared from 10 parts of cationic dye (Leather Black C of stahl chemical company), 120 parts of water and 10 parts of penetrating agent (PT-4235 of stahl chemical company).
Coating color fixing slurry: manually brushing for 1-2 times, wherein the coating amount is 10g/SF, and standing for 60min after brushing; the color fixing paste is prepared from 15 parts of color fixing agent (Fix-AA of Italy chemical company), 130 parts of water and 10 parts of formic acid (conventional industrial formic acid).
Washing the pulp: adding water at 30 ℃ of 150-; adding 1% of feeling agent (GS of Steyr chemical company), rotating for 10min, and discharging liquid;
and (3) after finishing: and (3) hanging and airing the crust leather obtained in the previous procedure, vibrating and softening, rolling and coating.
The patterned leather obtained in the above embodiment, especially the cowhide, can be used for manufacturing various vamps, bags and home ornaments, and the patterns on the surface of the leather make the leather stand out in various leather products, especially the application of vamps, and the leather can be used for manufacturing vamps of casual shoes, sports shoes, board shoes and the like.
The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.
Claims (8)
1. The method for manufacturing the patterned leather is characterized by comprising the following steps of: preparing crust leather → coating effect pulp → drying oven → effect pattern → coating dyeing pulp → washing pulp → after finishing;
the preparation method of the effect paste in the effect paste coating process comprises the following steps: uniformly mixing 100-150 parts of liquid sodium silicate, 10-50 parts of water, 10-20 parts of flatting agent and 10-20 parts of plasticizer;
the leveling agent is polysiloxane leveling agent;
the plasticizer is a nonionic water-soluble plasticizer;
the modulus of the liquid sodium silicate is 2.6-3.6, and the density is 1.2-1.5 g/mL;
the effect texture working procedure adopts a manual kneading method or a mechanical vibration method to process crust leather.
2. The method for manufacturing the patterned leather according to claim 1, further comprising a step of coating color fixing slurry;
the color fixing slurry coating procedure is positioned after the dyeing slurry coating procedure and before the pulp washing procedure.
3. The method for manufacturing patterned leather according to claim 2,
the coating effect slurry process adopts a spraying or roll coating method, and the coating amount is 20-40 g/SF.
4. The method for manufacturing patterned leather according to claim 3,
the procedure of coating the dyeing slurry adopts spraying or brushing, the coating amount is 5-20g/SF, and the mixture is kept stand for 30-90min after being coated;
the color fixing slurry coating procedure and the dyeing slurry coating procedure have the same coating method, coating amount and standing time;
the dyeing slurry in the dyeing slurry coating procedure comprises the following steps: 5-20 parts of cationic dye, 100-150 parts of water and 10-20 parts of penetrating agent;
the color fixing slurry in the color fixing slurry coating procedure comprises 10-20 parts of color fixing agent, 100 parts of water and 150 parts of formic acid and 5-15 parts of formic acid.
5. The method for manufacturing patterned leather according to claim 1,
the pulp washing process comprises the following specific operation steps: adding water at 25-35 deg.C 150-; adding 1-2% of hand feeling agent, rotating for 10-20min, and discharging liquid;
the post-finishing process comprises the steps of hanging and airing the crust leather prepared in the previous process, vibrating and softening, breaking and softening, toggling and coating.
6. Leather processed according to the method of any one of claims 1 to 5.
7. A leather product processed from the leather of claim 6.
8. Leather product according to claim 7, comprising shoe uppers, bags, home furnishings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010001045.6A CN111057804B (en) | 2020-01-02 | 2020-01-02 | Patterned leather manufacturing method, leather and leather product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010001045.6A CN111057804B (en) | 2020-01-02 | 2020-01-02 | Patterned leather manufacturing method, leather and leather product |
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| Publication Number | Publication Date |
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| CN111057804A CN111057804A (en) | 2020-04-24 |
| CN111057804B true CN111057804B (en) | 2022-05-06 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995533A (en) * | 2006-12-12 | 2007-07-11 | 天津工业大学 | Ice printing adhesive cement and ice printing fabric production method |
| CN101565918A (en) * | 2009-06-05 | 2009-10-28 | 中国乐凯胶片集团公司 | High-light release paper for synthetic leather |
| CN104074073A (en) * | 2014-07-06 | 2014-10-01 | 滁州惠智科技服务有限公司 | Production method of cracking imitation leather |
| CN106574166A (en) * | 2014-07-30 | 2017-04-19 | 三菱综合材料株式会社 | Surface-coating material, coated film, and hydrophilic/oil-repellent material |
| CN109252379A (en) * | 2017-07-13 | 2019-01-22 | 黄本辉 | Surface has the rtificial leather preparation method of optical visual texture, rtificial leather |
-
2020
- 2020-01-02 CN CN202010001045.6A patent/CN111057804B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995533A (en) * | 2006-12-12 | 2007-07-11 | 天津工业大学 | Ice printing adhesive cement and ice printing fabric production method |
| CN101565918A (en) * | 2009-06-05 | 2009-10-28 | 中国乐凯胶片集团公司 | High-light release paper for synthetic leather |
| CN104074073A (en) * | 2014-07-06 | 2014-10-01 | 滁州惠智科技服务有限公司 | Production method of cracking imitation leather |
| CN106574166A (en) * | 2014-07-30 | 2017-04-19 | 三菱综合材料株式会社 | Surface-coating material, coated film, and hydrophilic/oil-repellent material |
| CN109252379A (en) * | 2017-07-13 | 2019-01-22 | 黄本辉 | Surface has the rtificial leather preparation method of optical visual texture, rtificial leather |
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| CN111057804A (en) | 2020-04-24 |
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