CN110644247A - Water-based luggage leather grain absorption process - Google Patents
Water-based luggage leather grain absorption process Download PDFInfo
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- CN110644247A CN110644247A CN201910887265.0A CN201910887265A CN110644247A CN 110644247 A CN110644247 A CN 110644247A CN 201910887265 A CN201910887265 A CN 201910887265A CN 110644247 A CN110644247 A CN 110644247A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
- D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/145—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes two or more layers of polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention discloses a water-based luggage leather grain-absorbing process, which comprises the following specific steps: 100Kg of aqueous polyurethane wet-process resin, 0.5 to 1Kg of dispersant and 10 to 20Kg of wood flour are stirred uniformly, 4 to 5Kg of foaming agent and 0.5 to 1Kg of thickener are sequentially added and stirred uniformly to obtain wet-process materials meeting the requirements, the wet-process materials are foamed to 1.5 to 1.8 times of acid water and then coated and scraped on base cloth which is impregnated and dried, and wet-process bass is obtained through acid water solidification, water squeezing, water washing and drying; respectively and uniformly mixing 100Kg of waterborne polyurethane dry-process resin, 0.5-1.0Kg of auxiliary agent and 0.5-1Kg of thickening agent to obtain dry-process fabric and dry-process bottom material, coating and scraping the dry-process fabric on release paper, drying, coating and scraping the bottom material and bonding wet-process bass, separating the release paper, heating to absorb veins, and kneading to obtain the finished product.
Description
Technical Field
The invention relates to the field of synthetic leather manufacturing, in particular to a water-based luggage leather grain sucking process.
Background
At present, in the preparation process of the synthetic leather, ingredients such as polyurethane resin and the like are dissolved by a solvent, and wet base is subjected to impregnation and solidification by the solvent, so that waste water containing the solvent is generated in the manufacturing process, the environment is polluted, and the synthetic leather finished product contains the solvent, and can gradually volatilize in the reuse process, so that potential safety hazards exist for human health.
Disclosure of Invention
In order to overcome the defects, the invention provides the water-based luggage leather grain absorption process, and the ecological environment-friendly pure water-based luggage leather can be obtained by adopting the water-based luggage leather grain absorption process, and the pattern stereoscopic impression of the luggage leather is strong.
The invention adopts the technical scheme for solving the technical problems that: a water-based luggage leather grain absorption process comprises the following specific steps:
the method comprises the following steps: mixing ingredients by a wet method:
a. adding 100Kg of aqueous polyurethane wet-process resin into a reaction kettle, stirring at a low speed, adding 0.5-1Kg of dispersant, slowly adding 10-20Kg of wood powder, and stirring uniformly;
b. adding 4-5Kg of foaming agent into the mixture obtained in the step a, then stirring at a reduced speed, slowly adding 0.5-1Kg of thickening agent after uniformly stirring, and uniformly stirring;
c. b, detecting the viscosity, the gram weight and the temperature value of the mixture obtained in the step b, wherein the viscosity is required to be within the range of 18000mPa & s to 23000mPa & s, the deviation of the gram weight is within 20g, the temperature is lower than 40 ℃, and filtering the mixture if the mixture is qualified;
step two: and (3) wet bass production:
soaking the base cloth in 0.5-2% acid water solution by mass percentage, then drying the base cloth to be semi-dry, foaming the slurry filtered in the step c to 1.5-1.8 times by a foaming machine, then coating the slurry on the base cloth, soaking the base cloth in 4.5-5% acid water solution by mass percentage for solidification, then carrying out at least one water rolling procedure, and then carrying out water washing and drying to obtain wet-process bass;
step three: and (3) dry-method fabric and dry-method bottom material batching:
a. mixing 100Kg of waterborne polyurethane dry-process resin and 0.5-1.0Kg of auxiliary agent, uniformly stirring, adding 0.5-1Kg of thickening agent, and thickening to a viscosity value of 5000-8000 mPa & s to form a dry-process fabric;
b. 100Kg of waterborne polyurethane dry-process resin and 0.5-1.0Kg of auxiliary agent are mixed and stirred uniformly, then 0.5-1Kg of thickening agent is added to thicken to a viscosity value of 30000 mPa.s-40000 mPa.s to form a dry-process bottom material, the waterborne polyurethane material of the dry-process fabric is optimally selected to be waterborne polyurethane material with higher hardness and smoother texture, which is beneficial to improving the wear resistance and scratch resistance of the finished artificial leather product, and the polyurethane material of the dry-process bottom material is optimally selected to be softer waterborne polyurethane material, which is beneficial to improving the viscosity of the bottom material and improving the stripping resistance of the finished artificial leather product;
step four: dry-process veneering:
coating and scraping the dry-process fabric prepared in the third step on release paper with patterns, drying, then coating and scraping the bottom material to adhere the wet-process bass, and separating after drying by the release paper;
step five: absorbing lines:
firstly, heating the separated product at the temperature of 170-;
step six: kneading veins
Soaking the prepared semi-finished water-based leather in clear water, extruding the water, cutting into sections, and putting the sections into a dryer for kneading and drying;
step seven: and (6) inspecting a finished product.
The ecological and environment-friendly pure water luggage leather is prepared by the process method, the use of solvents is avoided, the product has no pollution to the environment, no harm to human bodies, soft hand feeling of the finished product, strong pattern stereoscopic impression, large integral strength of synthetic leather, easy maintenance of stable shape, and difficult damage and deformation after long-term use.
As a further improvement of the invention, the aqueous polyurethane wet-process resin in the step a in the step one is rotationally stirred in a reaction kettle at a low speed of 400-800 r/min, the wood powder is added in the step a in the step one and then stirred for 30 minutes at a speed of 400-600 r/min, and the foaming agent is added in the step b in the step one and then stirred for 5 minutes at a speed of 300-400 r/min.
As a further improvement of the invention, the speed of addition is controlled by observing dispersion during thickening by adding the thickening agent in the b-step of the step one, and the rotating speed is controlled to be 500-600 r/min.
As a further improvement of the invention, in the step b of the step one, 0.5 to 2Kg of aqueous color paste is added after the foaming agent is added and stirred uniformly, and then the thickening agent is added, and 5 to 8Kg of aqueous color paste, the aqueous polyurethane dry-process resin and the auxiliary agent are mixed and stirred in the ingredients of the dry-process fabric and the dry-process bottom material in the step three.
As a further improvement of the invention, in the second step, the acid aqueous solution is oxalic acid solution.
As a further improvement of the invention, the base fabric subjected to the impregnation treatment in the second step is semi-dried by a hot ironing wheel with a temperature of 130 ℃.
As a further improvement of the invention, in the fifth step, chilled water with the temperature of 3-5 ℃ is introduced into the suction corrugated roll.
As a further improvement of the invention, in the sixth step, the dryer performs kneading drying at the temperature of the dryer, and the drying time is 40 minutes.
As a further improvement of the invention, the production is carried out at the speed of 12-14 m/min in the second step, the production is carried out at the speed of 10-15 m/min in the fourth step, and the production is carried out at the speed of 12-15 m/min in the fifth step.
As a further improvement of the invention, the base cloth is textile cloth fiber, and in the sixth step, the semi-finished water-based leather is cut into 40-meter sections and then put into a dryer.
The invention has the beneficial effects that: the ecological and environment-friendly pure water-based luggage leather can be obtained, the use of a solvent is avoided in the luggage leather preparation process, the leather is prepared by adopting a pure water-based material through a special process, the generation of solvent-containing wastewater in the production process is avoided, the environment is not polluted, the obtained synthetic leather product does not contain the solvent, harmful substances cannot volatilize after long-term use, the human health is not damaged, the hand feeling of the finished product is soft, the stereoscopic impression of patterns is strong, the integral strength of the luggage leather is high, and the leather is not easy to damage and deform after long-term use.
Drawings
FIG. 1 is a structural diagram of an ecological environment-friendly pure waterborne synthetic leather interlayer prepared by the invention.
Dry process veneer-1 wet process bass layer-2 base cloth-3
Detailed Description
Example (b): a water-based luggage leather grain absorption process comprises the following specific steps:
the method comprises the following steps: mixing ingredients by a wet method:
the materials were prepared by wet blending according to the following table:
a. adding the aqueous polyurethane wet-process resin into a reaction kettle according to the batching table, stirring at a low speed of 400-800 r/min, adding the dispersing agent, slowly adding the wood powder, stirring at a speed of 4000-6000 r/min for 30 minutes;
b. after the aqueous polyurethane wet-process resin and the wood powder are fully and uniformly stirred, adding a foaming agent according to the formula, stirring for about 5 minutes, reducing the stirring speed to 400 revolutions per minute, adding the aqueous color paste after uniformly stirring, fully and uniformly stirring, starting to slowly add the thickening agent, and then observing the dispersion condition in the thickening process to control the adding speed, wherein the rotating speed is controlled at 600 revolutions per minute;
c. after all the materials are added, detecting the viscosity, the gram weight and the temperature of the materials to ensure that the viscosity is in the range of 18000mPa & s to 23000mPa & s, the deviation of the gram weight is within 20g, the temperature is lower than 40 ℃, and filtering the qualified mixture;
step two, wet bass production:
soaking a base fabric made of textile fabric fibers in an oxalic acid aqueous solution with the mass percentage concentration of 0.5-2%, drying the base fabric by a hot ironing wheel at the temperature of 130 ℃ for half drying, foaming the filtered slurry to the rate of 1.5-1.8 by a foaming machine, then coating the slurry on the base fabric, soaking the base fabric in the oxalic acid aqueous solution with the mass percentage concentration of 4.5-5% for solidification, then performing at least one water squeezing process, washing with water and drying to obtain a wet method bass, and the speed of the vehicle is 12-14 m/min;
step three, dry-method fabric and dry-method bottom material batching:
the materials were prepared by wet blending according to the following table:
mixing the aqueous polyurethane dry-process resin, the auxiliary agent and the aqueous color paste according to the dry-process ingredients, stirring for 10-15 minutes, adding the thickening agent, and thickening to a viscosity value of 5000-8000 mPa & s to form a dry-process fabric;
mixing the aqueous polyurethane dry-process resin, the auxiliary agent and the aqueous color paste according to the dry-process ingredients, stirring for 10-15 minutes, adding the thickening agent, and thickening to a viscosity value of 30000 mPa.s-40000 mPa.s to form a dry-process bottom material;
step four, dry process facing:
coating and scraping the dry-process fabric prepared in the third step on release paper with patterns, drying, coating and scraping the bottom material to adhere the wet-process bass, separating the dry-process fabric from the release paper, and controlling the speed to be 10-15 m/min;
step five: absorbing lines:
firstly, heating the separated product at the temperature of 170-180 ℃, and the speed of 12-15 m/min, introducing 3-5 ℃ chilled water into a patterned suction textured roller, and enabling the suction textured roller to act on the heated product by utilizing vacuum suction to obtain a semi-finished product with a full pattern;
step six: kneading veins
Soaking the prepared semi-finished water-based synthetic leather in clear water, extruding and cutting the water into sections with the length of about 40 meters, and putting the sections into a dryer for kneading and drying, wherein the drying temperature is 70 ℃, and the drying time is about 40 minutes;
step seven: inspection of finished products
And (5) judging whether the surface of the product has poor appearance defects or not.
Claims (10)
1. A water-based luggage leather grain absorption process is characterized in that: the method comprises the following specific steps:
the method comprises the following steps: mixing ingredients by a wet method:
a. adding 100Kg of aqueous polyurethane wet-process resin into a reaction kettle, stirring at a low speed, adding 0.5-1Kg of dispersant, slowly adding 10-20Kg of wood powder, and stirring uniformly;
b. adding 4-5Kg of foaming agent into the mixture obtained in the step a, then stirring at a reduced speed, slowly adding 0.5-1Kg of thickening agent after uniformly stirring, and uniformly stirring;
c. b, detecting the viscosity, the gram weight and the temperature value of the mixture obtained in the step b, wherein the viscosity is required to be within the range of 18000mPa & s to 23000mPa & s, the deviation of the gram weight is within 20g, the temperature is lower than 40 ℃, and filtering the mixture if the mixture is qualified;
step two: and (3) wet bass production:
soaking the base cloth in 0.5-2% acid water solution by mass percentage, then drying the base cloth to be semi-dry, foaming the slurry filtered in the step c to 1.5-1.8 times by a foaming machine, then coating the slurry on the base cloth, soaking the base cloth in 4.5-5% acid water solution by mass percentage for solidification, then carrying out at least one water rolling procedure, and then carrying out water washing and drying to obtain wet-process bass;
step three: and (3) dry-method fabric and dry-method bottom material batching:
a. mixing 100Kg of waterborne polyurethane dry-process resin and 0.5-1.0Kg of auxiliary agent, uniformly stirring, adding 0.5-1Kg of thickening agent, and thickening to a viscosity value of 5000-8000 mPa & s to form a dry-process fabric;
b. mixing 100Kg of waterborne polyurethane dry-process resin and 0.5-1.0Kg of auxiliary agent, uniformly stirring, adding 0.5-1Kg of thickening agent, and thickening to a viscosity value of 30000mPa & s-40000mPa & s to form a dry-process bottom material;
step four: dry-process veneering:
coating and scraping the dry-process fabric prepared in the third step on release paper with patterns, drying, then coating and scraping the bottom material to adhere the wet-process bass, and separating after drying by the release paper;
step five: absorbing lines:
firstly, heating the separated product at the temperature of 170-;
step six: kneading veins
Soaking the prepared semi-finished water-based leather in clear water, extruding the water, cutting into sections, and putting the sections into a dryer for kneading and drying;
step seven: and (6) inspecting a finished product.
2. The waterborne luggage leather embossing process of claim 1, characterized in that: and step a, the aqueous polyurethane wet process resin is stirred in a reaction kettle at a low speed of 400-800 rpm, wood powder is added in step a and then stirred for 30 minutes at a speed of 400-600 rpm, and foaming agent is added in step b and then stirred for 5 minutes at a speed of 300-400 rpm.
3. The waterborne luggage leather embossing process of claim 1, characterized in that: and b, adding a thickening agent in the step b of the step one, and observing the dispersion condition to control the adding speed in the thickening process, wherein the rotating speed is controlled to be 500-600 rpm.
4. The waterborne luggage leather embossing process of claim 1, characterized in that: and b, adding a foaming agent in the step b, uniformly stirring, adding 0.5-2Kg of aqueous color paste, fully and uniformly stirring, then adding a thickening agent, and mixing and stirring 5-8Kg of aqueous color paste, the aqueous polyurethane dry-process resin and the auxiliary agent in the dry-process fabric and dry-process bottom material ingredients in the step three.
5. The waterborne luggage leather embossing process of claim 1, characterized in that: and the acid water solution in the second step is oxalic acid solution.
6. The waterborne luggage leather embossing process of claim 1, characterized in that: and drying the impregnated base fabric in the second step to be semi-dried by a hot ironing wheel with the temperature of 130 ℃.
7. The waterborne luggage leather embossing process of claim 1, characterized in that: and step five, introducing 3-5 ℃ chilled water into the grain suction roller.
8. The waterborne luggage leather embossing process of claim 1, characterized in that: and in the sixth step, the dryer is used for kneading and drying at the temperature of the dryer, and the drying time is 40 minutes.
9. The waterborne luggage leather embossing process of claim 1, characterized in that: the production is carried out at the speed of 12-14 m/min in the second step, the production is carried out at the speed of 10-15 m/min in the fourth step, and the production is carried out at the speed of 12-15 m/min in the fifth step.
10. The waterborne luggage leather embossing process of claim 1, characterized in that: and the base cloth is textile fabric fibers, and in the sixth step, the semi-finished water-based leather is cut into 40-meter sections and then is placed into a dryer.
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| CN201910887265.0A CN110644247B (en) | 2019-09-19 | 2019-09-19 | Water-based luggage leather grain absorption process |
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| CN201910887265.0A CN110644247B (en) | 2019-09-19 | 2019-09-19 | Water-based luggage leather grain absorption process |
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| CN110644247B CN110644247B (en) | 2022-10-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808479A (en) * | 2022-05-19 | 2022-07-29 | 福建华夏合成革有限公司 | Preparation method of water-based earphone sleeve leather |
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| CN104141241A (en) * | 2013-05-10 | 2014-11-12 | 昆山协孚人造皮有限公司 | Production method for waterborne polyurethane scalded-polished leather |
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Effective date of registration: 20220802 Address after: Group 9, Gangcheng village, Changsha Town, Rudong County, Nantong City, Jiangsu Province, 226400 Applicant after: Jiangsu Xiefu New Material Technology Co.,Ltd. Address before: 215300 No.111 dayuhe Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Applicant before: KUNSHAN XIEFU NEW MATERIALS LIMITED BY SHARE LTD. |
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