CN109609709B - Method for manufacturing water-based coating sofa leather - Google Patents

Method for manufacturing water-based coating sofa leather Download PDF

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Publication number
CN109609709B
CN109609709B CN201811552193.6A CN201811552193A CN109609709B CN 109609709 B CN109609709 B CN 109609709B CN 201811552193 A CN201811552193 A CN 201811552193A CN 109609709 B CN109609709 B CN 109609709B
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stirring
iii
parts
section
pipe
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CN109609709A (en
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宓林飞
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Haining jiavalue Furniture Co.,Ltd.
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Haining Jiavalue Furniture Co ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/17—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing
    • B01F27/171—Stirrers with additional elements mounted on the stirrer, for purposes other than mixing for disintegrating, e.g. for milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • 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
    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16—Antifouling paints; Underwater paints
    • C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
    • C09D5/1662—Synthetic film-forming substance
    • 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
    • C14B1/56—Ornamenting, producing designs, embossing
    • 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

Abstract

The invention provides a method for manufacturing water-based coating sofa leather. The processing method solves the technical problems that the existing processing technology has too simple steps, cannot enable the existing processing technology to have good scuff resistance, is poor in using effect and the like. The manufacturing method of the water-based coating sofa leather comprises the following steps: a. outsourcing; b. preparing materials; c. manufacturing a bottom layer; d. manufacturing a middle layer; e. manufacturing a surface layer; f. and (6) embossing. The invention has the advantage of good use effect.

Description

Method for manufacturing water-based coating sofa leather
Technical Field
The invention belongs to the technical field of sofa leather, and relates to a manufacturing method of water-based coating sofa leather.
Background
The leather is the animal leather which is obtained by physical and chemical processing such as unhairing, tanning and the like and is denatured and not easy to rot, and when the animal leather is not subjected to surface coating, a plurality of problems exist, such as coarse pores, concave-convex leather surface, scars and the like.
Through retrieval, as disclosed in Chinese patent documents, a processing technology of cow leather [ application number: 201710905037.2, respectively; publication No.: CN 107858458A ]. The processing technology of the cowhide leather is characterized by comprising the following steps: 1) cleaning: cleaning fresh cowhide, removing subcutaneous meat, soaking in saline water, taking out, and air drying to obtain cowhide salt; 2) degreasing: cleaning salt cowhide with water, filtering, and degreasing in a degreasing tank filled with degreasing agent; the degreasing agent comprises the following raw materials: defatting enzyme, polyvinylpyrrolidone, tween-80, and water; 3) depilation: performing unhairing treatment on the degreased cowhide; 4) alkali leaching: adding cow leather into a rotary drum, and adding an alkali liquor, wherein the alkali liquor comprises the following raw materials in percentage by mass: 1% Na2S、2％Ca(OH)2Setting rotation for 0.5-1h, stopping for 3h, discarding the solution after 24h, and cleaning with running water; 5) deliming: mixing cow leather with 3% (NH)4)2SO4Soaking and washing with water solution, and cleaning with running water; 6) softening: adding cow leather into a rotary drum, adding 1% glycolic acid water solution, rotating for 0.5-1h, stopping for 3h, discarding liquid after 24h, and cleaning with running water; 7) pickling and tanning: adding cow leather into a rotary drum, adding 2% formic acid into the rotary drum, rotating for 20-30min, adding a composite tanning agent, wherein the composite tanning agent consists of tannin extract and chromium salt tanning agent, adjusting the pH value to 4-4.5 by using dilute sulfuric acid, setting rotation for 0.5-1h, stopping for 3h, discarding liquid after 24h, and cleaning by using running water; 8) and (3) drying: squeezing Corii Bubali, flattening, and air drying.
Although the processing technology disclosed in the patent can improve the softness of finished leather, the processing technology has too simple steps, cannot make the finished leather have good abrasion resistance, and has poor using effect, so that a manufacturing method of the water-based coating sofa leather is necessary.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a method for manufacturing water-based coating sofa leather.
The purpose of the invention can be realized by the following technical scheme: the manufacturing method of the water-based coating sofa leather is characterized by comprising the following steps:
a. outsourcing: purchasing existing cow leather on the market, and cleaning the surface of the cow leather;
b. preparing materials: weighing the raw materials for preparing the primer according to the parts by weight: 50-60 parts of waterborne polyurethane resin, 6-10 parts of pigment paste, 4-5 parts of flatting agent, 2.5-3.5 parts of softening agent and 20-25 parts of deionized water; weighing raw materials for preparing the middle layer coating: 25-35 parts of waterborne polyurethane resin, 4-7 parts of pigment paste, 1-3 parts of flatting agent, 1.3-1.8 parts of softening agent and 30-40 parts of deionized water; weighing raw materials for preparing the surface layer coating: 18-22 parts of waterborne polyurethane resin, 2-5 parts of flatting agent, 1.5-2.5 parts of cross-linking agent, 0.8-2.1 parts of antibacterial agent, 0.4-1.2 parts of hand feeling agent and 35-45 parts of deionized water; respectively putting the three main raw materials into high-efficiency stirring equipment for stirring to prepare a primer, a middle layer coating and a surface layer coating;
c. manufacturing a bottom layer: spraying the bottom layer coating on the cow leather by a spraying machine, and ironing for 1-2 times;
d. preparing a middle layer: spraying the middle layer coating on the bottom layer by a spraying machine for 2-3 times;
e. manufacturing a surface layer: spraying the surface layer coating on the middle layer by a spraying machine for 2-3 times;
f. embossing: embossing the cow leather by an embossing machine to obtain the finished product of the water-based coating sofa leather.
The cow leather in the step a is cow leather or buffalo leather.
The defoaming agent in the step b is an aqueous defoaming agent.
The cross-linking agent in the step b is an epoxy resin water-based cross-linking agent.
And c, ironing at the temperature of 60-80 ℃ for 4-5 s.
And f, embossing and dividing in the step f, rolling and pressing.
Step b high-efficient agitated vessel includes the base, be fixed with the agitator tank on the base, agitator tank upper portion has the charge door, charge door department is provided with first solenoid valve, the agitator tank lower part has the discharge gate, discharge gate department is provided with the second solenoid valve, the vertical main shaft that is provided with on the agitator tank, main shaft upper end links to each other with one can drive its pivoted power structure, the main shaft lower extreme links to each other with the rolling disc, be provided with first stirred tubular on the rolling disc, second stirred tubular and third stirred tubular, and first stirred tubular, second stirred tubular and third stirred tubular are evenly distributed.
The working principle of the high-efficiency stirring equipment is as follows: various raw materials are added into the stirring box, the main shaft is driven to rotate through the power structure, the main shaft drives the rotating disc to rotate, the rotating disc drives the first stirring pipe, the second stirring pipe and the third stirring pipe to rotate, the raw materials can be quickly and uniformly mixed, and the coating can be obtained and is quickly stirred.
The first stirring pipe comprises an upper vertical input section I, a middle spiral section I and a lower vertical output section I, the upper vertical input section I is fixed on the rotating disc, the upper vertical input section I is communicated with the upper end of the L-shaped guide pipe I, the lower end of the L-shaped guide pipe I is connected with the first conveying pump, the first conveying pump is close to the upper portion of the stirring box, the end portion of the lower vertical output section I is connected with an elastic first auxiliary sleeve, the lateral portion of the lower vertical output section I is further provided with a plurality of first output holes, the lower vertical output section I is further sleeved with a first blocking sleeve, the first blocking sleeve can seal the first output holes, the upper end of the first blocking sleeve is connected with the middle spiral section I through a first reset spring, the lower end of the first blocking sleeve is connected with the bottom of the first auxiliary sleeve through a first linkage rod, the upper vertical input section I and the lower vertical output section I are both provided with a plurality of first stirring pieces, and the second stirring pipe comprises an upper vertical input, The upper vertical input section II is fixed on the rotating disc, the upper end of the upper vertical input section II is communicated with the upper end of the L-shaped guide pipe II, the lower end of the L-shaped guide pipe II is connected with the conveying pump II, the conveying pump II is close to the middle part of the stirring box, the end part of the lower vertical output section II is connected with an elastic second auxiliary sleeve, the side part of the lower vertical output section II is also provided with a plurality of output holes II, the lower vertical output section II is also sleeved with a second blocking sleeve, the second blocking sleeve can seal the output holes II, the upper end of the second blocking sleeve is connected with the middle spiral section II through a return spring II, the lower end of the second blocking sleeve is connected with the bottom of the second auxiliary sleeve through a linkage rod II, the upper vertical input section II and the lower vertical output section II are both provided with a plurality of stirring sheets II, the third stirring pipe comprises an upper vertical input section III, a middle spiral section III and a lower vertical output section III, an upper vertical input section III is fixed on a rotating disc, the upper end of the upper vertical input section III is communicated with the upper end of an L-shaped material guide pipe III, the lower end of the L-shaped material guide pipe III is connected with a material conveying pump III, the material conveying pump III is close to the lower part of a stirring box, the end part of a lower vertical output section III is connected with an elastic third auxiliary sleeve, the side part of the lower vertical output section III is also provided with a plurality of output holes III, the lower vertical output section III is also sleeved with a third blocking sleeve, the third blocking sleeve can seal the output holes III, the upper end of the third blocking sleeve is connected with a middle spiral section III through a return spring III, the lower end of the third blocking sleeve is connected with the bottom of the third auxiliary sleeve through a linkage rod III, the upper vertical input section III and the lower vertical output section III are both provided with a plurality of stirring sheets III, the side part of the middle spiral section I is communicated with the side part of the middle spiral section II through, the side part of the middle spiral section II is communicated with the side part of the middle spiral section III through a communicating branch pipe II, a one-way valve II is arranged on the communicating branch pipe II, the side part of the middle spiral section III is communicated with the side part of the middle spiral section III through a communicating branch pipe III, and a one-way valve III is arranged on the communicating branch pipe III.
By adopting the structure, the first stirring pipe drives the first stirring sheet to rotate, the second stirring pipe drives the second stirring sheet to rotate, the third stirring pipe drives the third stirring sheet to rotate, meanwhile, the first material conveying pump is controlled to input the raw materials on the upper part of the stirring box into the first stirring pipe through the first L-shaped material guide pipe, the second material conveying pump is controlled to input the raw materials in the middle part of the stirring box into the second stirring pipe through the second L-shaped material guide pipe, the third material conveying pump is controlled to input the raw materials on the lower part of the stirring box into the third stirring pipe through the third L-shaped material guide pipe, and the first auxiliary sleeve drives the first blocking sleeve to move downwards through the first linkage rod under the auxiliary action of the first communicating branch pipe, the second communicating branch pipe and the third communicating branch pipe to mutually and spirally flow, meanwhile, the first auxiliary sleeve deforms downwards along with the gradual increase of the raw materials in the first stirring pipe, the first output hole is in an open state, the first auxiliary sleeve is reset downwards, the raw materials in the first auxiliary sleeve flow upwards and repeatedly impact the raw materials flowing downwards in the first stirring pipe at the first output hole, the second auxiliary sleeve deforms downwards along with the gradual increase of the raw materials in the second stirring pipe, the second auxiliary sleeve drives the second blocking sleeve to move downwards through the second linkage rod to enable the second output hole to be in an open state, the raw materials in the second auxiliary sleeve flow upwards and repeatedly impact the raw materials flowing downwards in the second stirring pipe at the second output hole after the second auxiliary sleeve is reset downwards, the third auxiliary sleeve deforms downwards along with the gradual increase of the raw materials in the third stirring pipe, the third auxiliary sleeve drives the third blocking sleeve to move downwards through the third linkage rod to enable the third output hole to be in an open state, and the raw materials in the third auxiliary sleeve repeatedly impact the raw materials flowing upwards and the raw materials flowing downwards in the third stirring pipe at the third output hole after the third auxiliary sleeve is reset downwards, thereby reducing the time required by stirring the raw materials and having good auxiliary effect.
The first auxiliary sleeve, the second auxiliary sleeve and the third auxiliary sleeve are internally provided with crushing balls, and a plurality of convex crushing knives are arranged on the crushing balls.
By adopting the structure, the raw materials in the first auxiliary sleeve, the second auxiliary sleeve and the third auxiliary sleeve can be crushed by the crushing ball, and the materials are prevented from being bonded into blocks.
The section of the crushing knife is triangular.
The power structure comprises a power motor, a driving gear and a driven gear, the power motor is fixed on the stirring box, an output shaft of the power motor is vertically upward, the driving gear is fixed at the end part of the output shaft of the power motor, the driven gear is fixed at the upper end of the main shaft, and the driving gear is meshed with the driven gear.
When the main shaft needs to be rotated, the power motor is controlled to drive the driving gear to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the main shaft to rotate, so that the main shaft can be rotated.
As another situation, the power structure comprises a power motor, a driving wheel, a driven wheel and a belt, wherein the power motor is fixed on the stirring box, an output shaft of the power motor is vertically upward, the driving wheel is fixed at the end part of the output shaft of the power motor, the driven wheel is fixed at the upper end of the main shaft, and the belt is sleeved between the driving wheel and the driven wheel.
When the main shaft needs to rotate, the power motor is controlled to drive the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the belt, and the driven wheel drives the main shaft to rotate, so that the main shaft can rotate.
And a plurality of electric heating pipes are further fixed on the inner side wall of the stirring box.
The side part of the stirring box is also provided with an access hole, and the stirring box is hinged with a box door capable of sealing the access hole.
The structure more than adopting, conveniently overhauls agitator tank inside through the access hole.
Compared with the prior art, the manufacturing method of the water-based coating sofa leather has the advantages that:
according to the invention, the bottom layer, the middle layer and the surface layer are coated on the surface of the cow leather, the waterborne polyurethane resin is used as a main raw material for coating the surface of the leather, the dihydroxy micromolecule monomer is introduced into a polyurethane matrix through polycondensation reaction, the micromolecule chain extender has good protein adsorption resistance, the surface of the leather is endowed with good scuffing resistance and antifouling performance, and meanwhile, a proper amount of antibacterial agent is added, so that the leather has good antibacterial performance and good use effect.
Drawings
FIG. 1 is a schematic diagram of the steps of the manufacturing method.
FIG. 2 is a schematic plan view of the high-efficiency stirring apparatus.
FIG. 3 is a schematic plan view of a high efficiency stirring apparatus with portions broken away.
In the figure, 1, a base; 2. a stirring box; 2a, a feed inlet; 2b, a discharge hole; 3. a second blocking sleeve; 4. a second auxiliary sleeve; 5. a linkage rod II; 6. a first blocking sleeve; 7. a first linkage rod; 8. a first auxiliary sleeve; 9. a linkage rod III; 10. a third auxiliary sleeve; 11. a third blocking sleeve; 12. a second solenoid valve; 13. a third material delivery pump; 14. an L-shaped material guide pipe III; 15. a third agitation pipe; 15a, an upper vertical input section III; 15b, a middle spiral section III; 15c, a lower vertical output section III; 16. rotating the disc; 17. a power motor; 18. a driving gear; 19. a main shaft; 20. a driven gear; 21. a first solenoid valve; 22. a first L-shaped material guide pipe; 23. a first material delivery pump; 24. a second L-shaped material guide pipe; 25. a second material conveying pump; 26. a first agitation pipe; 26a, an upper vertical input section I; 26b, a first middle spiral section; 26c, a first lower vertical output section; 27. a second agitation pipe; 27a, an upper vertical input section II; 27b, a middle spiral section II; 27c, a lower vertical output section II; 28. a second return spring; 29. crushing a ball; 30. a third return spring; 31. a first return spring; 32. the first branch pipe is communicated; 33. a one-way valve I; 34. a one-way valve III; 35. a third branch pipe is communicated; 36. stirring a third sheet; 37. stirring a first stirring sheet; 38. a second stirring sheet; 39. a second one-way valve; 40. and the second branch pipe is communicated.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in figure 1, the manufacturing method of the water-based coating sofa leather comprises the following steps:
a. outsourcing: purchasing existing cow leather on the market, and cleaning the surface of the cow leather;
b. preparing materials: weighing the raw materials for preparing the primer according to the parts by weight: 50-60 parts of waterborne polyurethane resin, 6-10 parts of pigment paste, 4-5 parts of flatting agent, 2.5-3.5 parts of softening agent and 20-25 parts of deionized water; weighing raw materials for preparing the middle layer coating: 25-35 parts of waterborne polyurethane resin, 4-7 parts of pigment paste, 1-3 parts of flatting agent, 1.3-1.8 parts of softening agent and 30-40 parts of deionized water; weighing raw materials for preparing the surface layer coating: 18-22 parts of waterborne polyurethane resin, 2-5 parts of flatting agent, 1.5-2.5 parts of cross-linking agent, 0.8-2.1 parts of antibacterial agent, 0.4-1.2 parts of hand feeling agent and 35-45 parts of deionized water; respectively putting the three main raw materials into high-efficiency stirring equipment for stirring to prepare a primer, a middle layer coating and a surface layer coating;
c. manufacturing a bottom layer: spraying the bottom layer coating on the cow leather by a spraying machine, and ironing for 1-2 times;
d. preparing a middle layer: spraying the middle layer coating on the bottom layer by a spraying machine for 2-3 times;
e. manufacturing a surface layer: spraying the surface layer coating on the middle layer by a spraying machine for 2-3 times;
f. embossing: embossing the cow leather by an embossing machine to obtain the finished product of the water-based coating sofa leather.
The cow leather in the step a is cow leather or buffalo leather.
The defoaming agent in the step b is an aqueous defoaming agent.
The cross-linking agent in the step b is an epoxy resin water-based cross-linking agent.
And c, ironing at the temperature of 60-80 ℃ for 4-5 s.
And f, embossing and dividing in the step f, rolling and pressing.
The method comprises the following specific steps:
a. outsourcing: purchasing existing cow leather on the market, and cleaning the surface of the cow leather; the cow leather in the step a is cow leather;
b. preparing materials: weighing the raw materials for preparing the primer according to the parts by weight: 55 parts of waterborne polyurethane resin, 7 parts of pigment paste, 4 parts of flatting agent, 2.8 parts of softening agent and 22 parts of deionized water; weighing raw materials for preparing the middle layer coating: 27 parts of waterborne polyurethane resin, 5 parts of pigment paste, 2 parts of flatting agent, 1.5 parts of softening agent and 32 parts of deionized water; weighing raw materials for preparing the surface layer coating: 20 parts of waterborne polyurethane resin, 3 parts of flatting agent, 1.9 parts of cross-linking agent, 1.3 parts of antibacterial agent, 0.6 part of hand feeling agent and 40 parts of deionized water; respectively putting the three main raw materials into high-efficiency stirring equipment for stirring to prepare a primer, a middle layer coating and a surface layer coating; the defoaming agent in the step b is a water-based defoaming agent; the cross-linking agent in the step b is an epoxy resin water-based cross-linking agent;
c. manufacturing a bottom layer: spraying the bottom coating on the cow leather by a spraying machine, and ironing for 1 time; the ironing temperature in the step c is 65 ℃, and the ironing time is 4 s;
d. preparing a middle layer: spraying the middle layer coating on the bottom layer by a spraying machine for 2 times;
e. manufacturing a surface layer: spraying the surface layer coating on the middle layer by a spraying machine for 2 times;
f. embossing: embossing the cow leather by an embossing machine to obtain the finished product of the water-based coating sofa leather; and f, embossing and splitting rolling in the step f.
The steps are adopted, and the detection is carried out, and the specific parameters are as follows:
1. tear strength (N): longitudinal 85, transverse 73;
2. flexural fatigue property: no cracking for 20000 times;
3. color fastness to rubbing: dry rubbing (staining: 4-5; color change 4-5), wet rubbing (staining: 4-5; color change 4-5);
4. pH value: 3.85
5. Volatile organic compound (μ g/m 3): 182 (after 5 hours);
6. hexavalent chromium content (mg/kg): 13.
the data show that the water-based coating sofa leather has better performance and can meet the existing use requirements.
As shown in fig. 2-3, the efficient stirring apparatus in step b includes a base 1, wherein a stirring box 2 is fixed on the base 1, and in this embodiment, the stirring box 2 is fixed on the base 1 by means of a bolt connection; the upper part of the stirring box 2 is provided with a feeding port 2a, the feeding port 2a is provided with a first electromagnetic valve 21, the lower part of the stirring box 2 is provided with a discharging port 2b, the discharging port 2b is provided with a second electromagnetic valve 12, the stirring box 2 is vertically provided with a main shaft 19, the upper end of the main shaft 19 is connected with a power structure capable of driving the main shaft to rotate, the lower end of the main shaft 19 is connected with the rotating disc 16, and in the embodiment, the lower end of the main shaft 19 is connected with the rotating disc 16 in a welding mode; the rotating disc 16 is provided with a first stirring pipe 26, a second stirring pipe 27 and a third stirring pipe 15, and the first stirring pipe 26, the second stirring pipe 27 and the third stirring pipe 15 are uniformly distributed.
The first stirring pipe 26 comprises an upper vertical input section I26 a, a middle spiral section I26 b and a lower vertical output section I26 c, the upper vertical input section I26 a is fixed on the rotating disc 16, the upper vertical input section I26 a is communicated with the upper end of an L-shaped material guide pipe I22, the lower end of the L-shaped material guide pipe I22 is connected with a material conveying pump I23, the material conveying pump I23 is close to the upper part of the stirring box 2, and the end part of the lower vertical output section I26 c is connected with an elastic first auxiliary sleeve 8; the side part of the lower vertical output section I26 c is also provided with a plurality of output holes I, and in the embodiment, the number of the output holes I is ten; the lower vertical output section I26 c is also sleeved with a first blocking sleeve 6, the first blocking sleeve 6 can seal the output hole I, the upper end of the first blocking sleeve 6 is connected with the middle spiral section I26 b through a first return spring 31, the lower end of the first blocking sleeve 6 is connected with the bottom of the first auxiliary sleeve 8 through a first linkage rod 7, the upper vertical input section I26 a and the lower vertical output section I26 c are respectively provided with a plurality of stirring pieces I37, and in the embodiment, the number of the stirring pieces I37 is four; the second stirring pipe 27 comprises an upper vertical input section II 27a, a middle spiral section II 27b and a lower vertical output section II 27c, the upper vertical input section II 27a is fixed on the rotating disc 16, the upper vertical input section II 27a is communicated with the upper end of the L-shaped material guide pipe II 24, the lower end of the L-shaped material guide pipe II 24 is connected with the material conveying pump II 25, the material conveying pump II 25 is close to the middle part of the stirring box 2, and the end part of the lower vertical output section II 27c is connected with the second elastic auxiliary sleeve 4; the side part of the lower vertical output section II 27c is also provided with a plurality of output holes II, and in the embodiment, the number of the output holes II is ten; the lower vertical output section 27c is also sleeved with a second blocking sleeve 3, the second blocking sleeve 3 can seal the output hole II, the upper end of the second blocking sleeve 3 is connected with the middle spiral section 27b through a second return spring 28, the lower end of the second blocking sleeve 3 is connected with the bottom of the second auxiliary sleeve 4 through a second linkage rod 5, the upper vertical input section 27a and the lower vertical output section 27c are both provided with a plurality of second stirring blades 38, and in the embodiment, the number of the second stirring blades 38 is four; the third stirring pipe 15 comprises an upper vertical input section three 15a, a middle spiral section three 15b and a lower vertical output section three 15c, the upper vertical input section three 15a is fixed on the rotating disc 16, the upper vertical input section three 15a is communicated with the upper end of the L-shaped material guiding pipe three 14, the lower end of the L-shaped material guiding pipe three 14 is connected with the material conveying pump three 13, the material conveying pump three 13 is close to the lower part of the stirring box 2, and the end part of the lower vertical output section three 15c is connected with an elastic third auxiliary sleeve 10, in the embodiment, the third auxiliary sleeve 10 is an existing product available on the market; the side part of the lower vertical output section III 15c is also provided with a plurality of output holes III, and in the embodiment, the number of the output holes III is ten; a third blocking sleeve 11 is further sleeved on the lower vertical output section III 15c, the third blocking sleeve 11 can seal the output hole III, the upper end of the third blocking sleeve 11 is connected with the middle spiral section III 15b through a return spring III 30, the lower end of the third blocking sleeve 11 is connected with the bottom of a third auxiliary sleeve 10 through a linkage rod III 9, a plurality of stirring sheets III 36 are arranged on the upper vertical input section III 15a and the lower vertical output section III 15c, and the number of the stirring sheets III 36 is four in the embodiment; the side part of the first middle spiral section 26b is communicated with the side part of the second middle spiral section 27b through a first communication branch pipe 32, a first check valve 33 is arranged on the first communication branch pipe 32, the side part of the second middle spiral section 27b is communicated with the side part of the third middle spiral section 15b through a second communication branch pipe 40, a second check valve 39 is arranged on the second communication branch pipe 40, the side part of the third middle spiral section 15b is communicated with the side part of the first middle spiral section 26b through a third communication branch pipe 35, and a third check valve 34 is arranged on the third communication branch pipe 35.
The first auxiliary sleeve 8, the second auxiliary sleeve 4 and the third auxiliary sleeve 10 are all internally provided with a crushing ball 29, and the crushing ball 29 is provided with a plurality of convex crushing cutters; in this embodiment, the number of crushing knives is thirty; the section of the crushing knife is triangular.
With the structure, the raw materials in the first auxiliary sleeve 8, the second auxiliary sleeve 4 and the third auxiliary sleeve 10 can be crushed by the crushing balls 29, and the materials are prevented from being bonded and agglomerated.
The power structure comprises a power motor 17, a driving gear 18 and a driven gear 20, wherein the power motor 17 is fixed on the stirring box 2, and in the embodiment, the power motor 17 is fixed on the stirring box 2 in a bolt connection mode; the output shaft of the power motor 17 is vertically upward, the driving gear 18 is fixed at the end part of the output shaft of the power motor 17, the driven gear 20 is fixed at the upper end of the main shaft 19, and the driving gear 18 is meshed with the driven gear 20.
Of course, according to the implementation situation, the power structure may also include a power motor 17, a driving wheel, a driven wheel and a belt, the power motor 17 is fixed on the stirring box 2, in this embodiment, the power motor 17 is fixed on the stirring box 2 by a bolt connection; an output shaft of the power motor 17 is vertically upward, the driving wheel is fixed at the end part of the output shaft of the power motor 17, the driven wheel is fixed at the upper end of the main shaft 19, and the belt is sleeved between the driving wheel and the driven wheel; when the main shaft 19 needs to be rotated, the power motor 17 is controlled to drive the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the belt, and the driven wheel drives the main shaft 19 to rotate, so that the main shaft 19 can be rotated.
A plurality of electric heating pipes are further fixed on the inner side wall of the stirring box 2, and in the embodiment, the number of the electric heating pipes is four.
The side part of the stirring box 2 is also provided with an access hole, and the stirring box 2 is hinged with a box door capable of sealing the access hole.
Adopt this structure, conveniently overhaul 2 insides of agitator tank through the access hole.
The working principle of the high-efficiency stirring equipment is as follows: various raw materials are added into a stirring box 2, a power motor 17 is controlled to drive a driving gear 18 to rotate, the driving gear 18 drives a driven gear 20 to rotate, the driven gear 20 drives a main shaft 19 to rotate, the main shaft 19 drives a rotating disc 16 to rotate, the rotating disc 16 drives a first stirring pipe 26, a second stirring pipe 27 and a third stirring pipe 15 to rotate, the first stirring pipe 26 drives a first stirring sheet 37 to rotate, the second stirring pipe 27 drives a second stirring sheet 38 to rotate, the third stirring pipe 15 drives a third stirring sheet 36 to rotate, meanwhile, a first material conveying pump 23 is controlled to input the raw materials on the upper portion of the stirring box 2 into the first stirring pipe 26 through a first L-shaped material guide pipe 22, a second material conveying pump 25 is controlled to input the raw materials on the middle portion of the stirring box 2 into the second stirring pipe 27 through a second L-shaped material guide pipe 24, and a third material conveying pump 13 is controlled to input the raw materials on the lower portion of the stirring box 2 into a third stirring, under the auxiliary action of the first communication branch pipe 32, the second communication branch pipe 40 and the third communication branch pipe 35, the raw materials in the first stirring pipe 26, the second stirring pipe 27 and the third stirring pipe 15 flow spirally, meanwhile, as the raw materials in the first stirring pipe 26 gradually increase, the first auxiliary sleeve 8 deforms downward, the first auxiliary sleeve 8 drives the first blocking sleeve 6 to move downward through the first linkage rod 7, so that the first output hole is in an open state, after the first auxiliary sleeve 8 resets downward, the raw materials in the first auxiliary sleeve 8 flow upward and repeatedly impact the raw materials flowing downward in the first stirring pipe 26 at the first output hole, as the raw materials in the second stirring pipe 27 gradually increase, the second auxiliary sleeve 4 deforms downward, the second auxiliary sleeve 4 drives the second blocking sleeve 3 to move downward through the second linkage rod 5, so that the second output hole is in an open state, and after the second auxiliary sleeve 4 resets downward, the raw materials in the third auxiliary sleeve 10 are enabled to flow upwards and repeatedly impact the raw materials flowing downwards in the second stirring pipe 27 at the second output hole, the third auxiliary sleeve 10 is enabled to deform downwards along with the gradual increase of the raw materials in the third stirring pipe 15, the third auxiliary sleeve 10 drives the third blocking sleeve 11 to move downwards through the linkage rod III 9, the third output hole III is enabled to be in an open state, after the third auxiliary sleeve 10 is reset downwards, the raw materials in the third auxiliary sleeve 10 flow upwards and repeatedly impact the raw materials flowing downwards in the third stirring pipe 15 at the third output hole, and the raw materials can be quickly and uniformly mixed to obtain the required coating.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (9)

1. The manufacturing method of the water-based coating sofa leather is characterized by comprising the following steps:
a. outsourcing: purchasing existing cow leather on the market, and cleaning the surface of the cow leather;
b. preparing materials: weighing the raw materials for preparing the primer according to the parts by weight: 50-60 parts of waterborne polyurethane resin, 6-10 parts of pigment paste, 4-5 parts of flatting agent, 2.5-3.5 parts of softening agent and 20-25 parts of deionized water; weighing raw materials for preparing the middle layer coating: 25-35 parts of waterborne polyurethane resin, 4-7 parts of pigment paste, 1-3 parts of flatting agent, 1.3-1.8 parts of softening agent and 30-40 parts of deionized water; weighing raw materials for preparing the surface layer coating: 18-22 parts of waterborne polyurethane resin, 2-5 parts of flatting agent, 1.5-2.5 parts of cross-linking agent, 0.8-2.1 parts of antibacterial agent, 0.4-1.2 parts of hand feeling agent and 35-45 parts of deionized water; respectively putting the three main raw materials into high-efficiency stirring equipment for stirring to prepare a primer, a middle layer coating and a surface layer coating; the efficient stirring equipment in the step b comprises a base, wherein a stirring box is fixed on the base, a feeding port is formed in the upper part of the stirring box, a first electromagnetic valve is arranged at the feeding port, a discharging port is formed in the lower part of the stirring box, a second electromagnetic valve is arranged at the discharging port, a main shaft is vertically arranged on the stirring box, the upper end of the main shaft is connected with a power structure capable of driving the main shaft to rotate, the lower end of the main shaft is connected with a rotating disc, a first stirring pipe, a second stirring pipe and a third stirring pipe are arranged on the rotating disc, and the first stirring pipe, the second stirring pipe and the third stirring pipe are uniformly distributed; the first stirring pipe comprises an upper vertical input section I, a middle spiral section I and a lower vertical output section I, the upper vertical input section I is fixed on the rotating disc, the upper vertical input section I is communicated with the upper end of the L-shaped guide pipe I, the lower end of the L-shaped guide pipe I is connected with the first conveying pump, the first conveying pump is close to the upper portion of the stirring box, the end portion of the lower vertical output section I is connected with an elastic first auxiliary sleeve, the lateral portion of the lower vertical output section I is further provided with a plurality of first output holes, the lower vertical output section I is further sleeved with a first blocking sleeve, the first blocking sleeve can seal the first output holes, the upper end of the first blocking sleeve is connected with the middle spiral section I through a first reset spring, the lower end of the first blocking sleeve is connected with the bottom of the first auxiliary sleeve through a first linkage rod, the upper vertical input section I and the lower vertical output section I are both provided with a plurality of first stirring pieces, and the second stirring pipe comprises an upper vertical input, The upper vertical input section II is fixed on the rotating disc, the upper end of the upper vertical input section II is communicated with the upper end of the L-shaped guide pipe II, the lower end of the L-shaped guide pipe II is connected with the conveying pump II, the conveying pump II is close to the middle part of the stirring box, the end part of the lower vertical output section II is connected with an elastic second auxiliary sleeve, the side part of the lower vertical output section II is also provided with a plurality of output holes II, the lower vertical output section II is also sleeved with a second blocking sleeve, the second blocking sleeve can seal the output holes II, the upper end of the second blocking sleeve is connected with the middle spiral section II through a return spring II, the lower end of the second blocking sleeve is connected with the bottom of the second auxiliary sleeve through a linkage rod II, the upper vertical input section II and the lower vertical output section II are both provided with a plurality of stirring sheets II, the third stirring pipe comprises an upper vertical input section III, a middle spiral section III and a lower vertical output section III, an upper vertical input section III is fixed on a rotating disc, the upper end of the upper vertical input section III is communicated with the upper end of an L-shaped material guide pipe III, the lower end of the L-shaped material guide pipe III is connected with a material conveying pump III, the material conveying pump III is close to the lower part of a stirring box, the end part of a lower vertical output section III is connected with an elastic third auxiliary sleeve, the side part of the lower vertical output section III is also provided with a plurality of output holes III, the lower vertical output section III is also sleeved with a third blocking sleeve, the third blocking sleeve can seal the output holes III, the upper end of the third blocking sleeve is connected with a middle spiral section III through a return spring III, the lower end of the third blocking sleeve is connected with the bottom of the third auxiliary sleeve through a linkage rod III, the upper vertical input section III and the lower vertical output section III are both provided with a plurality of stirring sheets III, the side part of the middle spiral section I is communicated with the side part of the middle spiral section II through, the side part of the middle spiral section II is communicated with the side part of the middle spiral section III through a communicating branch pipe II, a one-way valve II is arranged on the communicating branch pipe II, the side part of the middle spiral section III is communicated with the side part of the middle spiral section III through a communicating branch pipe III, and a one-way valve III is arranged on the communicating branch pipe III;
c. manufacturing a bottom layer: spraying the bottom layer coating on the cow leather by a spraying machine, and ironing for 1-2 times;
d. preparing a middle layer: spraying the middle layer coating on the bottom layer by a spraying machine for 2-3 times;
e. manufacturing a surface layer: spraying the surface layer coating on the middle layer by a spraying machine for 2-3 times;
f. embossing: embossing the cow leather by an embossing machine to obtain the finished product of the water-based coating sofa leather.
2. The method for making water-based coated sofa leather according to claim 1, wherein the cow leather in the step a is cow leather or buffalo leather.
3. The method for making the water-based coated sofa leather according to the claim 1, wherein the defoaming agent in the step b is a water-based defoaming agent.
4. The method for manufacturing the water-based coated sofa leather according to claim 1, wherein the cross-linking agent in the step b is an epoxy resin water-based cross-linking agent.
5. The method for manufacturing the water-based coated sofa leather according to claim 1, wherein the ironing temperature in the step c is 60-80 ℃ and the ironing time is 4-5 s.
6. The method for making the water-based coated sofa leather according to the claim 1, wherein the embossing and pattern-dividing roller and the pressing plate in the step f are two modes.
7. The method for manufacturing the water-based coated sofa leather according to claim 1, wherein the power structure comprises a power motor, a driving wheel, a driven wheel and a belt, the power motor is fixed on the stirring tank, an output shaft of the power motor is vertically upward, the driving wheel is fixed at the end part of the output shaft of the power motor, the driven wheel is fixed at the upper end of the main shaft, and the belt is sleeved between the driving wheel and the driven wheel.
8. The method for manufacturing the water-based coated sofa leather according to claim 1, wherein a plurality of electric heating pipes are further fixed on the inner side wall of the stirring tank.
9. The method for manufacturing the water-based coated sofa leather according to the claim 1, wherein the side part of the stirring box is also provided with an access hole, and the stirring box is also hinged with a box door capable of sealing the access hole.
CN201811552193.6A 2018-12-18 2018-12-18 Method for manufacturing water-based coating sofa leather Active CN109609709B (en)

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IT202100030059A1 (en) * 2022-03-30 2023-09-30 Andrea Fastelli “METHOD OF FINISHING LEATHER THROUGH THE DIRECT APPLICATION ON IT OF ACRYLIC, POLYURETHANE PRODUCTS, WAXES, THICKENING PRODUCTS, RELEASE PRODUCTS AND SIMILAR PRODUCTS”
CN114959124B (en) * 2022-05-30 2023-06-30 柏德皮革(中国)有限公司 Production method of cloud printing automotive interior leather

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Publication number Priority date Publication date Assignee Title
CN101982547A (en) * 2010-10-18 2011-03-02 海宁森德皮革有限公司 Light-proof and sweat-proof leathers for steering wheels
CN102732649A (en) * 2012-06-15 2012-10-17 海宁森德皮革有限公司 Production process of automobile interior decorative leather with ultralow total carbon emission
CN106861502A (en) * 2017-03-28 2017-06-20 滁州市松园农业科技有限公司 A kind of infant industry mixer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101982547A (en) * 2010-10-18 2011-03-02 海宁森德皮革有限公司 Light-proof and sweat-proof leathers for steering wheels
CN102732649A (en) * 2012-06-15 2012-10-17 海宁森德皮革有限公司 Production process of automobile interior decorative leather with ultralow total carbon emission
CN106861502A (en) * 2017-03-28 2017-06-20 滁州市松园农业科技有限公司 A kind of infant industry mixer

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