CN114015817A - Method for manufacturing environment-friendly water-based paint leather - Google Patents

Method for manufacturing environment-friendly water-based paint leather Download PDF

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Publication number
CN114015817A
CN114015817A CN202111229056.0A CN202111229056A CN114015817A CN 114015817 A CN114015817 A CN 114015817A CN 202111229056 A CN202111229056 A CN 202111229056A CN 114015817 A CN114015817 A CN 114015817A
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Prior art keywords
coating
water
parts
leather
resin
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CN202111229056.0A
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CN114015817B (en
Inventor
韦永红
肖峰
刘琳
杜利明
王小卓
冯厚平
但卫华
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XINGYE LEATHER TECHNOLOGY CO LTD
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XINGYE LEATHER TECHNOLOGY CO LTD
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    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/44—Mechanical treatment of leather surfaces
    • C14B1/46—Fluffing, buffing, or sanding
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/44—Mechanical treatment of leather surfaces
    • C14B1/54—Ironing
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/58—Drying
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention discloses a method for manufacturing an environment-friendly water-based paint coat, which comprises the following steps: first buffing of crust leather → filling → vacuum drying → mending → second buffing → back sealing → bottom coating → drying → ironing → floating coating → drying → top coating → drying → finished product; the first coating mixture in the filling step uses a permeable polyacrylate resin as a main material; the fourth coating mixed solution in the primary coating and intermediate coating processes takes polyurethane resin, polyacrylate resin and comprehensive resin containing active groups as main materials; the fifth coating mixed solution in the top coating polishing process takes water-based paint polish as a main material; the preparation method disclosed by the application takes water as a diluent, has no VOC emission and no solvent residue, is environment-friendly, and has a protection effect on the health of production operators and consumers.

Description

Method for manufacturing environment-friendly water-based paint leather
Technical Field
The invention relates to the technical field of tanning chemistry and tanning engineering, in particular to a method for manufacturing an environment-friendly water-based paint leather.
Background
The varnished leather, also called as varnished leather, is leather which forms a highly bright coating which is as smooth and flat as a mirror surface on crust leather by a special coating method, has the characteristics of dry and wet rubbing resistance, abrasion resistance, corrosion resistance, water resistance, moisture resistance, difficult deformation, easy cleaning and the like, and is popular with consumers due to the bright surface effect and the practical protection effect.
The current paint skins on the market are all oily paint skins in the traditional process, a large amount of solvent is needed as a diluent in the production and manufacturing process, and a cleaning machine also needs the solvent, so that a large amount of VOC (volatile organic compounds) is discharged. More seriously, the residual solvent in the lacquer leather can be slowly released during the use of the terminal consumer products (lacquer leather shoes, lacquer leather bags and the like). Obviously, the manufacturing process of the paint leather not only pollutes the environment, but also harms the health of operators and consumers.
Disclosure of Invention
The embodiment of the application provides a manufacturing method of the environment-friendly water-based paint leather, solves the technical problems that the oil-based paint leather in the prior art can release a large amount of VOC to cause environmental pollution, and realizes obtaining the environment-friendly water-based paint leather with excellent low-temperature deflection resistance and yellowing resistance.
The embodiment of the application provides a manufacturing method of an environment-friendly water-based paint coat, which comprises the following steps: first buffing of crust leather → filling → vacuum drying → mending → second buffing → back sealing → bottom coating → drying → ironing → floating coating → drying → top coating → drying → finished product;
the first coating mixed solution in the filling step takes permeable polyacrylate resin as a main material;
the second coating mixed solution in the repairing process takes a mixture of polyurethane and polyacrylate and an organic filler as main materials;
the third coating liquid mixture in the back sealing step uses an acrylic resin as a main material;
the fourth coating mixed solution in the primary coating and intermediate coating processes takes polyurethane resin, polyacrylate resin and comprehensive resin containing active groups as main materials;
the fifth coating mixture in the top coat finish step uses water-based paint finishes as the main material.
Further, the first coating mixture solution includes: water, permeable polyacrylate resin and penetrant;
the second coating mixture solution includes: polyurethane and polyacrylate mixture, organic filler;
the third coating mixture solution includes: water, small molecular polyacrylic resin, wax, casein;
the fourth coating mixture solution includes: water, polyurethane resin containing active groups, polyacrylate resin, comprehensive resin, extinction filler and pigment paste;
the fifth coating mixture solution includes: water, water-based paint, a cross-linking agent, a flatting agent and a hand feeling agent.
Further, the water paint light is selected from at least one of water epoxy resin, water polyurethane resin, water polyacrylate resin and water alkyd resin.
Further, the cross-linking agent is selected from at least one of aziridine, polycarbodiimide and isocyanate.
Further, the first coating mixture solution includes: 400 portions of water, 400 portions of permeable polyacrylate resin and 50 portions to 200 portions of penetrant;
the second coating mixture solution includes: 500-900 parts of polyurethane and polyacrylate mixture and 50-200 parts of organic filler;
the third coating mixture solution includes: 100 portions of water, 400 portions of micromolecular polyacrylic resin, 50 to 200 portions of paraffin wax, 10 to 100 portions of casein;
the fourth coating mixture solution includes: 0-100 parts of water, 50-300 parts of polyurethane resin containing active groups, 50-300 parts of polyacrylate resin, 50-300 parts of comprehensive resin, 10-200 parts of matting filler and 50-250 parts of pigment paste;
the fifth coating mixture solution includes: 0-100 parts of water, 100-2000 parts of water-based paint, 0-100 parts of cross-linking agent, 0-100 parts of flatting agent and 0-100 parts of hand feeling agent. The water is used for adjusting the consistency of the mixed solution, if the mixed solution is thick, water is added, and if the consistency is proper, water is not added; the water paint film has certain self-crosslinking property, the crosslinking agent promotes the water paint film to be crosslinked more deeply, the paint light film is harder, and if the paint light film which is a little softer is needed, the crosslinking agent is not needed; the leveling agent is used for adjusting the leveling property of the mixed liquid, if the paint light film has no fish eyes, pits or pinholes, the mixed liquid has good leveling property, and the leveling agent does not need to be added; the addition amount of the hand feeling agent can influence the surface hand feeling of the finished product and can be added according to the requirement.
Furthermore, the filling procedure adopts a roller coating method, and the coating amount is 10-80 g/sf/time;
the repairing process adopts a manual blade coating method, and the coating amount is 1-8 g/sf/time;
the back sealing procedure adopts a spraying method, and the coating amount is 1-10 g/sf/time;
the bottom coating process adopts a roller coating method, and the coating amount is 3-15 g/sf/time;
the middle coating adopts a roller coating method, and the coating amount is 2-10 g/sf/time;
the top coat adopts a roller coating method, and the coating amount is 1-10 g/sf/time.
Furthermore, the first leather grinding process of the crust leather adopts 180-320 sand paper;
the second leather grinding process adopts 320-800 sand paper;
the vacuum drying conditions are as follows: the vacuum degree is 0.1-0.4KPa, the temperature is 40-80 ℃, and the time is 1-6 minutes;
the ironing condition is 80-130 ℃/20-120 kgf;
the drying conditions are as follows: the temperature is 50-120 ℃ and the time is 2-20 minutes.
Further, the organic filler is lignocellulose;
the penetrating agent is ethylene glycol monoethyl ether;
the wax is oxidized polyethylene wax containing an emulsifier;
the extinction filler is kaolin;
the leveling agent is alkyl modified organic siloxane;
the hand feeling agent is modified organic silicon emulsion.
Further, the method comprises the following steps: first buffing of crust leather → filling → vacuum drying → mending → second buffing → back sealing → bottom coating → drying → ironing → floating → drying → ironing → floating → drying → top coating → drying → finished product.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. the preparation method disclosed by the application takes water as a diluent, has no VOC emission and no solvent residue, is environment-friendly, and has a protection effect on the health of production operators and consumers.
2. All the procedures of the whole process route of the patent are closely connected, buckled with each other in a ring and are called back and forth. The steps of crust leather first buffing → filling → vacuum drying → mending → second buffing → back sealing are crust leather processing stages, aiming at obtaining flat, compact crust leather without damage on leather surface, and the function is as follows:
the first leather grinding process is to grind the damaged part and open the grain surface, and this step is favorable to the penetration of the first coating liquid mixture in the subsequent filling and can not penetrate fully without the next leather grinding process.
Secondly, the untreated crust leather often has loose-face crease phenomenon, the phenomenon can influence the top layer to form a continuous paint light film, and in order to solve the problem, the permeable polyacrylate resin is used in the filling process, the permeable polyacrylate resin can permeate into the leather to reach the reticular layer, and the copolymerization reaction is carried out to form a film in the dehydration process, so that the reticular layer leather fiber is fixed, and the loose-face crease phenomenon of the crust leather is improved.
And thirdly, vacuum drying is to fix the permeable polyacrylate resin in the filling process among the empty spaces of the leather fibers so as to obtain flat, compact and fine crust leather, and if the vacuum is lacked, the filling effect is reduced by half.
And fourthly, the surface of the genuine leather has the defects with different depths, the repairing material needs to be manually scraped and filled in the defect part, and the surface of the genuine leather has pits due to incomplete repairing, so that the top layer is influenced to form a continuous paint film, and the mirror surface effect of the finished product is influenced. And because the manual operation of workers cannot ensure that the whole piece of crust leather and the whole batch are uniform and consistent, the leather needs to be ground for the second time to achieve a basically uniform and consistent state.
Fifthly, the leather back pile is relatively thick and is easy to be stained with dust to pollute the leather surface, so that the leather back pile needs to be sealed by micromolecule resin, micromolecule acrylic resin is easy to form adsorption combination with the leather back pile (leather fiber), and acrylic resin is dehydrated into a film to have the anti-pollution performance and prevent the leather back pile from being stained with dust to pollute the leather surface in the production process.
The processes of base coating → drying → ironing → intercoat → drying are collectively called as the coating process, the purpose is to close the leather surface and color, the color of the finished paint leather is generated by the base coating and intercoat processes, and the functions are as follows:
the primary coating and intermediate coating process is mainly used for sealing the leather surface, and if the leather surface is not sealed by the primary coating and intermediate coating process, the water-based paint light on the top layer can penetrate into the leather, so that a continuous and high-gloss paint film cannot be formed on the leather surface.
After the crust leather is processed and coated, the coated crust leather which is flat, compact, delicate, has no damage on the leather surface, uniform color and good closed leather surface is obtained, and then the final process, namely top layer paint light → drying → finished products:
firstly, the water paint light forms a continuous, high-light, transparent, firm and flat and smooth paint light film on the surface of the coated crust leather, thereby manufacturing the environment-friendly water paint leather.
3. In the prior art, oil paint polish is usually used for preparing paint skins, the oil paint polish is not easy to store, and the oil paint polish can be cured within more than 24 hours. The water-based paint polish is adopted, the water-based paint polish is convenient to store, transport and use, potential safety hazards do not exist, and meanwhile, the water-based paint polish can be dried and hardened after being coated on the leather surface through a drying tunnel at 90-95 ℃ for 5-6 minutes, so that the production efficiency is improved.
4. The water-based paint leather has excellent low-temperature deflection resistance and yellowing resistance, is environment-friendly, and can be applied to a wider range.
Detailed Description
In order to better understand the technical solutions, the technical solutions will be described in detail with reference to the description and the specific embodiments.
Example 1
Preparing a first coating mixed solution: mixing water 550 parts, penetrating polyacrylate resin PRIMAL SCL-400300 parts, and penetrating agent EUDERM Driver MOP-C150 parts.
Preparing a second coating mixed solution: mixing 800 parts of polyurethane and polyacrylate mixture STUCCO 8184 (Miji chemical Co., Ltd.) and 200 parts of organic Filler Filler FD (Hongfeng chemical Co., Ltd.).
Preparing a third coating mixed solution: mixing 300 parts of water, 50 parts of small molecular polyacrylic resin PRIMAL SB 150100 parts of Wax EUDERM Wax CL-C and 50 parts of casein EUDERM photoster L.
Step (four), preparing a fourth coating mixed solution: 50 parts of water, 200 parts of polyurethane resin BAYDERM Bottom CTR containing active groups, 300150 parts of polyacrylate resin PRIMAL SB, 200 parts of synthetic resin BAYGUN Compact CC-C, 100 parts of extinction filler EUDERM Matt SN-C and 150 parts of pigment paste.
Preparing a fifth coating mixed solution: 50 parts of water, 50 parts of water-based paint light BAYDERM X-tra Gloss EXP 22461000 parts, 30 parts of cross-linking agent AQUADERM XL-8080 parts, 20 parts of flatting agent AQUADERM Fluid H and 30 parts of hand feeling agent Melio WF-5230 (Steyr fine paint Co., Ltd.) are mixed to obtain the paint.
The chemical materials used in this example were all Langshan (Changzhou) Inc., except as noted.
Step (six): first leather polishing of crust leather (No. 240 sandpaper 1-2 times) → filling (roller filling 1-2 times, coating amount 30-35 g/sf/time) → vacuum drying (vacuum degree 0.2KPa, temperature 60 ℃, time 2-4 minutes) → mending (hand knife coating, coating amount 2-3 g/sf/time) → second leather polishing (No. 600 sandpaper 1-2 times) → back sealing (spray coating 1-2 times, coating amount 4-6 g/sf/time) → priming (roller coating 1-3 times, coating amount 8-10 g/sf/time) → drying (temperature 90-95 ℃, time 5-6 minutes) → ironing (100 ℃/60-80kgf) → intermediate coating (roller coating 2-5 times, coating amount 5-6 g/sf/time) → drying (temperature 90-95 ℃, time 5-6 minutes) → top coat finish light (roller coating 1-4 times, coating amount 4-5 g/sf/time) → drying (temperature 90-95 ℃, time 5-6 minutes) → finished product
Example 2
Preparing a first coating mixed solution: mixing 500 parts of water, 2974-RE 200 parts of permeable polyacrylate resin and 100 parts of penetrant 8620-PP.
Preparing a second coating mixed solution: mixing 900 parts of polyurethane and polyacrylate mixture STUCCO 8184 (Miji chemical Co., Ltd.) and 100 parts of organic Filler Filler FD (Hongfeng chemical Co., Ltd.).
Preparing a third coating mixed solution: mixing 400 parts of water, 2320-RE 150 parts of small molecular polyacrylic resin, 4750-AA 80 parts of wax for separation and 4103-LP 70 parts of casein to obtain the product.
Step (four), preparing a fourth coating mixed solution: mixing 40 parts of water, 40 parts of polyurethane resin RU-73-901150 parts containing active groups, 2350-RE 120 parts of polyacrylate resin, 78-555150 parts of comprehensive resin RC-78, FI-126180 parts of matting filler and 120 parts of pigment paste to obtain the pigment paste.
Preparing a fifth coating mixed solution: mixing 30 parts of water, 1711-UR 800 parts of water-based paint, 30 parts of cross-linking agent Aqualen AKU liq, 10 parts of flatting agent AQUADERM Fluid H and 78 parts of hand feeling agent Melio WF-523020.
The chemical materials used in this example were, except for the indication, Steyr Fine coatings, Inc.
Step (six): first leather polishing of crust leather (No. 280 sandpaper 1-2 times) → filling (roller filling 1-3 times, coating amount 28-30 g/sf/time) → vacuum drying (vacuum degree 0.3KPa, temperature 70 ℃, time 2-4 minutes) → mending (hand knife coating, coating amount 2-4 g/sf/time) → second leather polishing (No. 400 sandpaper 1-2 times) → back sealing (spray coating 1-2 times, coating amount 5-8 g/sf/time) → priming (roller coating 1-4 times, coating amount 6-8 g/sf/time) → drying (temperature 85-90 ℃, time 5-8 minutes) → ironing (95 ℃/80-100kgf) → intermediate coating (roller coating 2-4 times, coating amount 5-8 g/sf/time) → drying (temperature 85-90 ℃, time 5-8 minutes) → ironing (95 ℃/80-100kgf) → mid-coating (roll coating 2-4 times, coating amount 5-8 g/sf/time) → drying (temperature 85-90 ℃, time 5-8 minutes) → top coating light (roll coating 1-4 times, coating amount 4-8 g/sf/time) → drying (temperature 90-100 ℃, time 4-8 minutes) → finish product.
The leather surface shows different grain thickness degrees due to the source of the cow leather crust leather in different regions, different sizes of sheets and different varieties. The fine leather surface texture can be coated and finished according to the embodiment 1, and the coarse leather surface texture can be coated and finished according to the embodiment 2. In this example 2, the number of times of ironing → intercoating → drying was increased more than that in example 1, and it was helpful to the fineness of the coated crust leather and the sealing effect, and the thinner the coated crust leather was, the better the sealing effect was, and the better the transparency after the top coat paint was applied by roller, the better the mirror effect was.
Experimental testing
Appearance evaluation: the water-based paint leather manufactured by the embodiment 1 and the embodiment 2 has the advantages of smooth leather surface, compact and firm leather body, fullness and elasticity, uniform brightness, permeability, high brightness and fineness of a paint finish layer, and the utilization rate of a finished product reaches over 95 percent.
(II) evaluation of physical properties: the physical properties of the conventional oil based paint skins of examples 1 and 2 are shown in table 1 below:
Figure BDA0003315318980000081
Figure BDA0003315318980000091
TABLE 1
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 (9)

1. The method for manufacturing the environment-friendly water-based paint leather is characterized by comprising the following steps of: first buffing of crust leather → filling → vacuum drying → mending → second buffing → back sealing → bottom coating → drying → ironing → floating coating → drying → top coating → drying → finished product;
the first coating mixture in the filling step uses a permeable polyacrylate resin as a main material;
the second coating mixed solution in the repairing process takes a mixture of polyurethane and polyacrylate and an organic filler as main materials;
the third coating liquid mixture in the back sealing step uses an acrylic resin as a main material;
the fourth coating mixed solution in the primary coating and intermediate coating processes takes polyurethane resin, polyacrylate resin and comprehensive resin containing active groups as main materials;
the fifth coating mixture in the top coat finish step uses water-based paint finishes as the main material.
2. The method of claim 1, wherein the first coating mixture comprises: water, permeable polyacrylate resin and penetrant;
the second coating mixture solution includes: polyurethane and polyacrylate mixture, organic filler;
the third coating mixture solution includes: water, small molecular polyacrylic resin, wax, casein;
the fourth coating mixture solution includes: water, polyurethane resin containing active groups, polyacrylate resin, comprehensive resin, extinction filler and pigment paste;
the fifth coating mixture solution includes: water, water-based paint, a cross-linking agent, a flatting agent and a hand feeling agent.
3. The method of claim 1, wherein the water-based paint varnish is at least one selected from water-based epoxy resin, water-based polyurethane resin, water-based polyacrylate resin and water-based alkyd resin.
4. The method as claimed in claim 2, wherein the cross-linking agent is at least one selected from aziridine, polycarbodiimide, and isocyanate.
5. The method for manufacturing the environment-friendly water-based paint leather as claimed in claim 2,
the first coating mixture solution includes: 400 portions of water, 400 portions of permeable polyacrylate resin and 50 portions to 200 portions of penetrating agent;
the second coating mixture solution includes: 500-900 parts of polyurethane and polyacrylate mixture and 50-200 parts of organic filler;
the third coating mixture solution includes: 100 portions of water, 400 portions of micromolecular polyacrylic resin, 50 to 200 portions of paraffin wax, 10 to 100 portions of casein;
the fourth coating mixture solution includes: 0-100 parts of water, 50-300 parts of polyurethane resin containing active groups, 50-300 parts of polyacrylate resin, 50-300 parts of comprehensive resin, 10-200 parts of matting filler and 50-250 parts of pigment paste;
the fifth coating mixture solution includes: 0-100 parts of water, 100-2000 parts of water-based paint, 0-100 parts of cross-linking agent, 0-100 parts of flatting agent and 0-100 parts of hand feeling agent.
6. The method for manufacturing the environment-friendly water-based paint leather as claimed in claim 1, wherein the filling process adopts a roller coating method, and the coating amount is 10-80 g/sf/time;
the repairing process adopts a manual blade coating method, and the coating amount is 1-8 g/sf/time;
the back sealing procedure adopts a spraying method, and the coating amount is 1-10 g/sf/time;
the bottom coating process adopts a roller coating method, and the coating amount is 3-15 g/sf/time;
the middle coating adopts a roller coating method, and the coating amount is 2-10 g/sf/time;
the top coat adopts a roller coating method, and the coating amount is 1-10 g/sf/time.
7. The method for manufacturing the environment-friendly water-based paint leather as claimed in claim 1, wherein the first leather grinding process of the crust leather adopts 180-320 sand paper;
the second leather grinding process adopts 320-800 sand paper;
the vacuum drying conditions are as follows: the vacuum degree is 0.1-0.4KPa, the temperature is 40-80 ℃, and the time is 1-6 minutes;
the ironing condition is 80-130 ℃/20-120 kgf;
the drying conditions are as follows: the temperature is 50-120 ℃ and the time is 2-20 minutes.
8. The method for manufacturing the environment-friendly water-based paint leather as claimed in claim 2, wherein the organic filler is lignocellulose;
the penetrating agent is ethylene glycol monoethyl ether;
the wax is oxidized polyethylene wax containing an emulsifier;
the extinction filler is kaolin;
the leveling agent is alkyl modified organic siloxane;
the hand feeling agent is modified organic silicon emulsion.
9. The method for manufacturing the environment-friendly water-based paint leather as claimed in claim 1, characterized by comprising the following steps: first buffing of crust leather → filling → vacuum drying → mending → second buffing → back sealing → bottom coating → drying → ironing → floating → drying → ironing → floating → drying → top coating → drying → finished product.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116837152A (en) * 2023-05-06 2023-10-03 杭州牧知家具有限公司 Novel integrated furniture cattle leather and manufacturing method thereof

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