CN108411640A - A kind of leather and preparation method thereof - Google Patents
A kind of leather and preparation method thereof Download PDFInfo
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- CN108411640A CN108411640A CN201810287856.XA CN201810287856A CN108411640A CN 108411640 A CN108411640 A CN 108411640A CN 201810287856 A CN201810287856 A CN 201810287856A CN 108411640 A CN108411640 A CN 108411640A
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- base fabric
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- pigment
- leather
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Classifications
-
- 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
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
-
- 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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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a kind of leather, including base fabric, the front and back of the base fabric is coated respectively with positive coating materials and CB coating, and according to the mass fraction, the positive coating materials are made of following material：90 110 parts of polyurethane resin, 90 100 parts of DMF solvent, 28 parts of fiber powder, 0.1 0.5 parts of auxiliary agent, 5 15 parts of pigment, the CB coating is made of following material：90 110 parts of polyurethane resin, 500 600 parts of DMF solvent, 5 15 parts of pigment, successively by pressings, coating, solidification, washing, again pressing, drying and shaping, cooling, winding, the inspection of semifinished product, grind skin, product inspection, winding obtain finished leather, by using osmosis, production efficiency is high, product yield is high, waste of material is reduced, while not needing impregnation equipment, saves fund.
Description
Technical field
The present invention relates to leather chemical industry technical fields, it particularly relates to a kind of leather and preparation method thereof.
Background technology
Leather containing polyurethane resin, special structure make it have excellent chemical property and unrivaled processing
Performance, such as unique flexibility, low temperature resistant, wear-resisting, caking property and high cohesion energy etc., therefore the product has in many fields
It is widely applied.But former technique uses and contains soaking technology, disadvantage：Efficiency is low, and waste of material is big, and product yield is relatively also bad,
It to be also equipped with impregnation equipment simultaneously, it is big in turn result in financial pressure.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Invention content
For above-mentioned technical problem in the related technology, a kind of leather of present invention proposition and preparation method thereof can solve
Above-mentioned technical problem.
To realize the above-mentioned technical purpose, the technical proposal of the invention is realized in this way：
The front and back of a kind of leather, including base fabric, the base fabric is coated respectively with positive coating materials and CB coating, by mass parts
Number meter, the positive coating materials are made of following material：90-110 parts of polyurethane resin, 90-100 parts of DMF solvent, fiber powder 2-8
Part, 0.1-0.5 parts of auxiliary agent, 5-15 parts of pigment, the CB coating is made of following material：90-110 parts of polyurethane resin, DMF
500-600 parts of solvent, 5-15 parts of pigment.
Further, the positive coating materials are made of following material：100 parts of polyurethane resin, 95 parts of DMF solvent, fiber
5 parts of powder, 0.2 part of auxiliary agent, 10 parts of pigment.
Further, the CB coating is made of following material：100 parts of polyurethane resin, 550 parts of DMF solvent, pigment
10 parts.
Further, the selection of auxiliary dispersant and levelling agent.
A kind of preparation method of leather, includes the following steps：
S1. the base fabric of suitable dimension is cut as needed；
S2. prepare positive coating materials and CB coating, according to the mass fraction, the positive coating materials are made of following material：Polyurethane
90-110 parts of resin, 90-100 parts of DMF solvent, 2-8 parts of fiber powder, 0.1-0.5 parts of auxiliary agent, 5-15 parts of pigment, the back side apply
Material is made of following material：90-110 parts of polyurethane resin, 500-600 parts of DMF solvent, 5-15 parts of pigment；
S3. coating is carried out to the front and back of base fabric respectively；
S4. the base fabric after coating is put into the solidified water of mass fraction 20%DMF contents, is solidified；
S5. by the base fabric solidified soaking and water washing into the water, base fabric overstock until no DMF residuals in soaking process；
S6. by the base fabric pressing after soaking and water washing, drying and shaping, cooling, winding, the inspection of semifinished product, mill skin, product inspection, receipts
Volume, obtains synthetic leather.
Further, it is rolled, pressing base fabric, is scalded in the base fabric cut using press before carrying out coating to base fabric
Flat temperature is 50 DEG C ± 5 DEG C.
Further, the pressing temperature described in step S6 is 80 DEG C, and the time of plating is 5 minutes.
Further, the temperature of the drying and shaping described in step S6 is 120 DEG C -150 DEG C, time 2-3 minute.
Beneficial effects of the present invention：By using osmosis, production efficiency is high, and product yield is high, reduces waste of material, together
When do not need impregnation equipment, save fund.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained, shall fall within the protection scope of the present invention.
The selection of raw material：Levelling agent：Levelling agent is a kind of common coating additive, it can promote coating in drying and forming-film mistake
A smooth, smooth, uniform film is formed in journey.Can effectively reduce cover with paint, lacquer, colour wash, etc. liquid surface tension, improve its levelability and uniformly
One substance of property.The permeability for covering with paint, lacquer, colour wash, etc. liquid can be improved, the possibility for generating spot and spot when brushing can be reduced, increase covering
Property, keep film forming uniform, natural.It includes silicone oil that organic silicon is preferentially selected in the present invention, and polymethyl siloxane, polyether polyester are modified
Organosiloxane, alkyl-modified organosiloxane etc..
Dispersant：A kind of chemicals is added to the water the ability for increasing its degranulation, and the effect of dispersant is using wetting point
Powder, which is reduced, completes dispersion process required time and energy, stablizes disperseed pigment dispersion, modified pigment particle table
Surface properties adjust the motility of pigment particles, are embodied in the following aspects：Shorten jitter time, improve gloss, improves
Tinting strength, tinting power and covering power improve color developing and toning property, prevent floating, prevent from flocculating, prevent from settling.The present invention can be used
Cationic compound dispersant or anionic compound dispersant.
Polyurethane resin, DMF solvent, fiber powder, auxiliary agent, pigment are directly bought on the market, and wherein DMF solvent refers to
It is n,N-Dimethylformamide, it includes wood fiber powder etc., selection of auxiliary dispersant that fiber powder, which preferentially selects organic fibrous material,
Include organo-silicon compound, cationic compound and anionic compound with levelling agent, pigment can be selected various as needed
Color includes organic pigment and inorganic pigment.
Embodiment 1：
The base fabric of suitable dimension is cut as needed, and base fabric selects TC cloth；Prepare positive coating materials and CB coating, by mass fraction
Meter, the positive coating materials are made of following material：Polyurethane resin 90kg, 90 kg of DMF solvent, 2 kg of fiber powder（It selects wooden
Fiber powder）, 0.1 kg of auxiliary agent, 5 kg of pigment, the CB coating is made of following material：90 kg, DMF of polyurethane resin are molten
500 kg of agent, 5 kg of pigment, wherein selection of auxiliary silicone oil+cationic compound dispersant, total 0.1kg, positive coating materials and the back side
Coating stirs evenly respectively, and at 25 DEG C, viscosity control is viscous in 2500 μ Pa s, CB coating stirring when positive coating materials stir
Degree control is in 100 μ Pa s；It being rolled on the TC cloth cut using press, pressing TC cloth, pressing temperature is controlled at 45 DEG C,
Coating is carried out to the front and back of base fabric respectively；Base fabric after coating is put into the solidified water of mass fraction 20%DMF contents
In, it is solidified；By the base fabric solidified soaking and water washing into the water, base fabric overstock up to no DMF in soaking process
Residual；Cleaned base fabric is again placed on press and is plated again, the control of pressing temperature is at 80 DEG C, duration 5 minutes, by base
Cloth is put into drying chamber and is dried, 120 DEG C of drying room temperature, 2 minutes time；It is naturally cold that the base fabric of drying is placed on shady and cool position
But, until scrim surfaces temperature is less than 30 DEG C, the base fabric cooled down is subjected to winding processing；Double of finished product synthetic leather surface is complete
Degree is tested（It is main to find out that there are broken hole, the defect wares such as incompleteness）, double of finished product synthetic leather front polish, and makes it more
Smooth exquisiteness tests to finished product synthetic leather thickness（Pick out in uneven thickness or thickness low LCL substandard products）, finally will
Qualified finished product synthetic leather carries out winding processing.The synthetic leather is mainly used for the positions such as heel of a shoe, glove surface.
Embodiment 2：
The base fabric of suitable dimension is cut as needed；Prepare positive coating materials and CB coating, according to the mass fraction, the front applies
Material is made of following material：Polyurethane resin 100kg, 95 kg of DMF solvent, 5 kg of fiber powder（Select organic cotton fiber powder）, help
0.2 kg of agent, 10 kg of pigment, the CB coating are made of following material：100 kg of polyurethane resin, 550 kg of DMF solvent,
10 kg of pigment, wherein selection of auxiliary polymethyl siloxane+anionic compound dispersant, total 0.2kg, positive coating materials and the back side
Coating stirs evenly respectively, and at 25 DEG C, viscosity control is viscous in 2500 μ Pa s, CB coating stirring when positive coating materials stir
Degree control is in 100 μ Pa s；It being rolled on the TC cloth cut using press, pressing TC cloth, pressing temperature is controlled at 50 DEG C,
Coating is carried out to the front and back of base fabric respectively；Base fabric after coating is put into the solidified water of mass fraction 20%DMF contents
In, it is solidified；By the base fabric solidified soaking and water washing into the water, base fabric overstock up to no DMF in soaking process
Residual；Cleaned base fabric is again placed on press and is plated again, the control of pressing temperature is at 80 DEG C, duration 5 minutes, by base
Cloth is put into drying chamber and is dried, 130 DEG C of drying room temperature, 2 minutes time；It is naturally cold that the base fabric of drying is placed on shady and cool position
But, until scrim surfaces temperature is less than 30 DEG C, the base fabric cooled down is subjected to winding processing；Double of finished product synthetic leather surface is complete
Degree is tested（It is main to find out that there are broken hole, the defect wares such as incompleteness）, double of finished product synthetic leather front polish, and makes it more
Smooth exquisiteness tests to finished product synthetic leather thickness（Pick out in uneven thickness or thickness low LCL substandard products）, finally will
Qualified finished product synthetic leather carries out winding processing.The synthetic leather is mainly used for the positions such as heel of a shoe, glove surface.
Embodiment 3：
The base fabric of suitable dimension is cut as needed；Prepare positive coating materials and CB coating, according to the mass fraction, the front applies
Material is made of following material：Polyurethane resin 110kg, 100 kg of DMF solvent, 8 kg of fiber powder（Select polyester fiber powder）, help
0.5 kg of agent, 15 kg of pigment, the CB coating are made of following material：110 kg of polyurethane resin, 600 kg of DMF solvent,
15 kg of pigment, wherein selection of auxiliary polyether polyester azo polyether polyeste+cationic compound dispersant, total 0.5kg, front
Coating and CB coating stir evenly respectively, and at 25 DEG C, viscosity control is in 2500 μ Pa s, the back side painting when positive coating materials stir
Viscosity control is in 100 μ Pa s when material stirring；It is rolled on the TC cloth cut using press, pressing TC cloth, pressing temperature control
System carries out coating to the front and back of base fabric respectively at 55 DEG C；Base fabric after coating is put into mass fraction 20%DMF contents
Solidified water in, solidified；By the base fabric solidified soaking and water washing into the water, base fabric overstock in soaking process straight
It is remained to no DMF；Cleaned base fabric is again placed on press and is plated again, pressing temperature is controlled at 80 DEG C, and duration 5 divides
Base fabric is put into drying chamber and dries by clock, 150 DEG C of drying room temperature, 3 minutes time；The base fabric of drying is placed on shady and cool position
Natural cooling is set, until scrim surfaces temperature is less than 30 DEG C, the base fabric cooled down is subjected to winding processing；Double of finished product synthetic leather
Surface integrity is tested（It is main to find out that there are broken hole, the defect wares such as incompleteness）, double of finished product synthetic leather front polish,
Make its more smooth exquisiteness, tests to finished product synthetic leather thickness（It picks out in uneven thickness or thickness low LCL time
Product）, qualified finished product synthetic leather is finally subjected to winding processing.The synthetic leather is mainly used for the positions such as heel of a shoe, glove surface.
Embodiment 4：
The base fabric of suitable dimension is cut as needed；Prepare positive coating materials and CB coating, according to the mass fraction, the front applies
Material is made of following material：Polyurethane resin 100kg, 100 kg of DMF solvent, fiber powder 6kg（Select viscose rayon powder）, auxiliary agent
0.3 kg, 13 kg of pigment, the CB coating are made of following material：105 kg of polyurethane resin, 580 kg of DMF solvent, face
Expect 13kg, wherein selection of auxiliary alkyl-modified organosiloxane+cationic compound dispersant, total 0.3kg, positive coating materials and the back of the body
Coating materials stir evenly respectively, and at 25 DEG C, viscosity control is in 2500 μ Pa s when positive coating materials stir, when CB coating stirs
Viscosity is controlled in 100 μ Pa s；It is rolled on the TC cloth cut using press, pressing TC cloth, pressing temperature is controlled 52
DEG C, coating is carried out to the front and back of base fabric respectively；Base fabric after coating is put into the solidification of mass fraction 20%DMF contents
In water, solidified；By the base fabric solidified soaking and water washing into the water, base fabric overstock until nothing in soaking process
DMF is remained；Cleaned base fabric is again placed on press and is plated again, the control of pressing temperature is at 80 DEG C, duration 5 minutes,
Base fabric is put into drying chamber and is dried, 140 DEG C of drying room temperature, 2 minutes time；The base fabric of drying is placed on shady and cool position certainly
It is so cooling, until scrim surfaces temperature is less than 30 DEG C, the base fabric cooled down is subjected to winding processing；Double of finished product synthetic leather surface
Integrity degree is tested（It is main to find out that there are broken hole, the defect wares such as incompleteness）, double of finished product synthetic leather front polish, and makes it
More smooth exquisiteness tests to finished product synthetic leather thickness（Pick out in uneven thickness or thickness low LCL substandard products）, most
Qualified finished product synthetic leather is subjected to winding processing afterwards.The synthetic leather is mainly used for the positions such as heel of a shoe, glove surface.
In conclusion by means of the above-mentioned technical proposal of the present invention, by using osmosis, production efficiency is high, and product is received
Rate is high, reduces waste of material, while not needing impregnation equipment, saves fund.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (8)
1. a kind of leather, which is characterized in that including base fabric, the front and back of the base fabric is coated respectively with positive coating materials and the back side
Coating, according to the mass fraction, the positive coating materials are made of following material：90-110 parts of polyurethane resin, DMF solvent 90-100
Part, 2-8 parts of fiber powder, 0.1-0.5 parts of auxiliary agent, 5-15 parts of pigment, the CB coating is made of following material：Polyurethane resin
90-110 parts, 500-600 parts of DMF solvent, 5-15 parts of pigment.
2. a kind of leather according to claim 1, which is characterized in that the positive coating materials are made of following material：Polyurethane
100 parts of resin, 95 parts of DMF solvent, 5 parts of fiber powder, 0.2 part of auxiliary agent, 10 parts of pigment.
3. a kind of leather according to claim 1 or claim 2, which is characterized in that the CB coating is made of following material：Poly- ammonia
100 parts of ester resin, 550 parts of DMF solvent, 10 parts of pigment.
4. a kind of building wall insulation and decoration vertical planting system module according to claim 1, which is characterized in that described to help
Dispersant and levelling agent are selected in agent.
5. a kind of preparation method of leather, which is characterized in that include the following steps：
S1. the base fabric of suitable dimension is cut as needed；
S2. prepare positive coating materials and CB coating, according to the mass fraction, the positive coating materials are made of following material：Polyurethane
90-110 parts of resin, 90-100 parts of DMF solvent, 2-8 parts of fiber powder, 0.1-0.5 parts of auxiliary agent, 5-15 parts of pigment, the back side apply
Material is made of following material：90-110 parts of polyurethane resin, 500-600 parts of DMF solvent, 5-15 parts of pigment；
S3. coating is carried out to the front and back of base fabric respectively；
S4. the base fabric after coating is put into the solidified water of mass fraction 20%DMF contents, is solidified；
S5. by the base fabric solidified soaking and water washing into the water, base fabric overstock until no DMF residuals in soaking process；
S6. by the base fabric pressing after soaking and water washing, drying and shaping, cooling, winding, the inspection of semifinished product, mill skin, product inspection, receipts
Volume, obtains synthetic leather.
6. a kind of preparation method of leather according to claim 5, which is characterized in that using boiling hot before carrying out coating to base fabric
Flat machine rolls in the base fabric cut, pressing base fabric, and pressing temperature is 50 DEG C ± 5 DEG C.
7. a kind of preparation method of leather according to claim 5, which is characterized in that the pressing temperature described in step S6 is 80
DEG C, the time of plating is 5 minutes.
8. a kind of preparation method of leather according to claim 5, which is characterized in that the temperature of the drying and shaping described in step S6
Degree is 120 DEG C -150 DEG C, time 2-3 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287856.XA CN108411640A (en) | 2018-04-03 | 2018-04-03 | A kind of leather and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287856.XA CN108411640A (en) | 2018-04-03 | 2018-04-03 | A kind of leather and preparation method thereof |
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| Publication Number | Publication Date |
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| CN108411640A true CN108411640A (en) | 2018-08-17 |
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ID=63134384
Family Applications (1)
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| CN201810287856.XA Pending CN108411640A (en) | 2018-04-03 | 2018-04-03 | A kind of leather and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908582A (en) * | 2022-05-26 | 2022-08-16 | 福建华夏合成革有限公司 | Preparation method of tie-dyed protein leather |
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|---|---|---|---|---|
| JPH02133682A (en) * | 1988-11-11 | 1990-05-22 | Bando Chem Ind Ltd | Synthetic leather and production thereof |
| CN101440578A (en) * | 2008-12-19 | 2009-05-27 | 安徽安利合成革股份有限公司 | Novel waterproof air previous polyurethane artificial leather and preparation thereof |
| CN102517919A (en) * | 2011-12-11 | 2012-06-27 | 林炳忠 | Leather production method |
| CN102677482A (en) * | 2012-05-21 | 2012-09-19 | 海宁大红马布业有限公司 | Environment-friendly waterborne polyurethane suede leather with high permeability and preparation method of environment-friendly waterborne polyurethane suede leather |
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| CN114908582A (en) * | 2022-05-26 | 2022-08-16 | 福建华夏合成革有限公司 | Preparation method of tie-dyed protein leather |
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Application publication date: 20180817 |