CN112695542A - Preparation process of water-based microfiber synthetic leather - Google Patents

Preparation process of water-based microfiber synthetic leather Download PDF

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Publication number
CN112695542A
CN112695542A CN202011493334.9A CN202011493334A CN112695542A CN 112695542 A CN112695542 A CN 112695542A CN 202011493334 A CN202011493334 A CN 202011493334A CN 112695542 A CN112695542 A CN 112695542A
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CN
China
Prior art keywords
roller
superfine fiber
fiber non
woven fabric
synthetic leather
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011493334.9A
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Chinese (zh)
Inventor
刘顺兆
刘传庆
徐蓉
王建勇
吴丽萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YANGZHOU DERWINS PLASTICS TECHNOLOGY CO LTD
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YANGZHOU DERWINS PLASTICS TECHNOLOGY CO LTD
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Priority to CN202011493334.9A priority Critical patent/CN112695542A/en
Publication of CN112695542A publication Critical patent/CN112695542A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C13/00—Means for manipulating or holding work, e.g. for separate articles
    • B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
    • D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The invention discloses a preparation process of water-based microfiber synthetic leather, which comprises the following steps: winding the superfine fiber non-woven fabric on a unwinding roller of synthetic leather production equipment, adding the aqueous slurry into an impregnation tank, driving the superfine fiber non-woven fabric to be tightened through a lifting motor, driving the tightened superfine fiber non-woven fabric to move in the impregnation tank through a moving cylinder, fully penetrating the aqueous slurry into the superfine fiber non-woven fabric, performing alkali reduction treatment on the semi-finished synthetic leather, and drying after neutralization to obtain the aqueous superfine fiber synthetic leather; the synthetic leather disclosed by the invention is harmless to a human body in the using process, cannot cause pollution to the environment, is safe and environment-friendly, can open fiber gaps of the superfine fiber non-woven fabric, and can drive the superfine fiber non-woven fabric to transversely move through the moving cylinder, so that the water-based slurry can permeate the superfine fiber non-woven fabric, the infiltration effect of the superfine fiber non-woven fabric is greatly improved, and the quality of the water-based superfine synthetic leather is ensured.

Description

Preparation process of water-based microfiber synthetic leather
Technical Field
The invention relates to the technical field of synthetic leather, and particularly relates to a preparation process of water-based microfiber synthetic leather.
Background
The microfiber leather is fully called as 'microfiber synthetic leather', is a high-simulation leather product formed by coating a PU coating on the basis of base cloth formed by microfiber, has extremely excellent mechanical property and wear resistance, excellent cold resistance, air permeability and aging resistance, high tear strength and tensile strength, good folding resistance, good cold resistance, good mildew resistance, thick and full finished products, good simulation, easy surface cleaning, similar tissue structure and natural leather and the like, and has low content of organic volatile matters and excellent environmental protection; toxic wastewater can be generated in the preparation process of the traditional aqueous microfiber synthetic leather, the environment is polluted, slurry cannot enter fiber gaps of the microfiber non-woven fabric in the preparation process of the traditional aqueous microfiber synthetic leather, the microfiber non-woven fabric is kept in a horizontal state in an impregnation groove and is infiltrated in a roller piece transmission mode, the infiltration effect is poor, and the product quality cannot be guaranteed.
Disclosure of Invention
The invention aims to provide a preparation process of water-based microfiber synthetic leather, which is characterized in that water-based polyurethane resin is added into a preparation raw material of water-based slurry to replace the traditional oleoresin, so that toxic wastewater and waste gas emission are avoided in the preparation process, and meanwhile, the prepared water-based microfiber synthetic leather is harmless to a human body in the use process and does not cause pollution to the environment, so that the preparation process is safe and environment-friendly, and the technical problems that the toxic wastewater is generated in the preparation process of the traditional water-based microfiber synthetic leather and the environment is polluted are solved;
the invention winds and rolls superfine fiber non-woven fabric on an unwinding roller of synthetic leather production equipment, adds water slurry into an impregnation groove, starts an unwinding motor, drives the unwinding roller to rotate and discharge materials, leads the superfine fiber non-woven fabric to pass through the upper supporting roller after being guided by a guide roller, then the superfine fiber non-woven fabric passes through a space between an upper extrusion roller and an upper clamping roller and then passes through a space between a lower extrusion roller and a lower clamping roller, starts a lifting motor, drives a threaded rod to rotate, enables a lifting plate to ascend due to the thread matching relationship of the threaded rod and a fixed rod, drives two connecting blocks to ascend through two vertical rods, drives the upper extrusion roller to ascend, extrudes the superfine fiber non-woven fabric upwards by the upper extrusion roller, enables the superfine fiber non-woven fabric to be tightened, and simultaneously clamps the superfine fiber non-woven fabric by the upper extrusion roller and the upper clamping roller, at the moment, the superfine fiber non-woven fabric between one supporting roll and the upper squeezing roll and the superfine fiber non-woven fabric between the lower squeezing roll and the other supporting roll are in a loose state, the superfine fiber non-woven fabric in the impregnation groove can be clamped and stretched, and fiber gaps of the superfine fiber non-woven fabric are opened, so that the water-based slurry can fully permeate the superfine fiber non-woven fabric, the infiltration effect is improved, and the technical problem that the slurry cannot enter the fiber gaps of the superfine fiber non-woven fabric in the preparation process of the traditional water-based superfine fiber synthetic leather and the infiltration effect is poor is solved;
the invention drives the movable seat to move through the movable air cylinder, the movable seat drives the two vertical plates to move and drives the upper extrusion roller, the lower extrusion roller and the clamping roller to reciprocate in the impregnation groove, so that the tightened superfine fiber non-woven fabric moves in the impregnation groove, the water-based slurry fully permeates the superfine fiber non-woven fabric, the superfine fiber non-woven fabric soaked with the water-based slurry is guided by the guide roller II and then enters the oven to be dried, and the dried superfine fiber non-woven fabric is wound by the winding roller. The infiltration effect of superfine fiber non-woven fabrics is greatly improved, the quality of the water-based superfine fiber synthetic leather is guaranteed, and the technical problems that in the preparation process of the traditional water-based superfine fiber synthetic leather, the superfine fiber non-woven fabrics are kept in a horizontal state in an impregnation groove and are infiltrated in a roller piece transmission mode, the infiltration effect is poor, and the product quality cannot be guaranteed are solved.
The purpose of the invention can be realized by the following technical scheme:
a preparation process of water-based microfiber synthetic leather specifically comprises the following steps:
firstly, winding and winding the superfine fiber non-woven fabric on an unwinding roller of synthetic leather production equipment, adding water-based slurry into an impregnation groove, starting an unwinding motor, driving the unwinding roller to rotate and discharge materials, leading the superfine fiber non-woven fabric to pass through the upper part of one supporting roller through a guide roller I, then leading the superfine fiber non-woven fabric to pass through a space between an upper extrusion roller and an upper clamping roller and then pass through a space between a lower extrusion roller and a lower clamping roller, starting a lifting motor, driving a threaded rod to rotate through the lifting motor, enabling a lifting plate to ascend due to the threaded matching relationship between the threaded rod and a fixed rod, driving two connecting blocks to ascend through two vertical rods by the lifting plate, driving the upper extrusion roller to ascend through the two vertical rods, extruding the superfine fiber non-woven fabric by the upper extrusion roller to tighten the superfine fiber non-woven fabric, and simultaneously clamping the superfine fiber non-woven fabric by the upper extrusion roller and, at the moment, the superfine fiber non-woven fabric between one of the supporting rollers and the upper squeezing roller and the superfine fiber non-woven fabric between the lower squeezing roller and the other supporting roller are both in a loose state;
step two, starting a moving cylinder, driving a moving seat to move by the moving cylinder, driving two vertical plates to move by the moving seat, driving an upper extrusion roller, a lower extrusion roller and a clamping roller to reciprocate in an impregnation groove, moving the tightened superfine fiber non-woven fabric in the impregnation groove, fully penetrating the aqueous slurry into the superfine fiber non-woven fabric, guiding the superfine fiber non-woven fabric soaked with the aqueous slurry by a guide roller II, then drying in an oven, and rolling the dried superfine fiber non-woven fabric by a rolling roller to obtain a semi-finished synthetic leather;
and step three, putting the semi-finished synthetic leather into a 2-7% sodium hydroxide aqueous solution for alkali decrement treatment, wherein the decrement temperature is 75-96 ℃, the decrement time is 1-1.5h, putting the semi-finished synthetic leather with the alkali decrement into a 15-25% citric acid solution, soaking at normal temperature for 15-30min for neutralization, washing with clear water until the pH value is 7, and then putting into an oven with the temperature of 105-160 ℃ for drying to obtain the water-based microfiber synthetic leather.
Furthermore, the moving speed of the superfine fiber non-woven fabric in the soaking tank is 1-15 cm/s.
Further, the aqueous slurry is prepared from the following raw materials in parts by mass: 40-45 parts of waterborne polyurethane resin, 4-6 parts of wood powder, 1-3 parts of organic silicon quaternary ammonium salt, 3-5 parts of waterborne polyurethane thickener, 2-4 parts of polyether defoamer, 5-6 parts of organic silicon flatting agent, 6-8 parts of waterborne color paste and 25-30 parts of water.
Further, the synthetic leather production equipment comprises an installation bin, wherein an unwinding roller and a winding roller are respectively arranged at two ends inside the installation bin, the unwinding roller and the winding roller are rotatably connected with the installation bin, an unwinding motor and a winding motor are fixedly installed on the outer wall of one side of the installation bin, the end part of an output shaft of the unwinding motor is fixedly connected with one end of the unwinding roller, the end part of the output shaft of the winding motor is fixedly connected with one end of the winding roller, a first guide roller is arranged on one side of the unwinding roller and rotatably connected with the installation bin, a soaking groove is arranged on one side of the first guide roller, and the soaking groove is fixedly installed on the inner wall of the lower side of the installation bin;
the inner side containing the soaking groove is movably provided with two vertical plates along the horizontal direction, two clamping rollers are rotatably arranged between the two vertical plates, the two clamping rollers are respectively positioned at the top and the bottom of the area between the two vertical plates, an upper squeeze roller and a lower squeeze roller are further arranged between the two vertical plates, the upper squeeze roller and the lower squeeze roller are respectively positioned between the two clamping rollers, the upper squeeze roller is movably arranged between the two vertical plates along the vertical direction, the two ends of the lower squeeze roller are respectively and rotatably connected with the two vertical plates through bearings, one side containing the soaking groove is provided with a second guide roller, the second guide roller is rotatably connected with the installation bin, one side of the second guide roller is provided with an oven, the oven is fixedly connected with the installation bin, a third guide roller is arranged between the oven and the wind-up roller, and the third guide roller is rotatably connected with the installation bin.
Further, the rectangle opening has been seted up to the upper wall in installation storehouse, there is the removal seat along horizontal direction movable mounting in the rectangle opening, the both sides of removing the seat are all rotated and are installed the gyro wheel, the upside inner wall in installation storehouse transversely is fixed with two guide rails, and two guide rails are located rectangle open-ended both sides respectively, and two gyro wheels cooperate with two guide rails respectively, the upside inner wall fixed mounting in installation storehouse has the moving cylinder, the output lever tip of moving cylinder with remove seat fixed connection, the bottom of removing the seat and the top fixed connection of two risers.
Furthermore, a lifting plate is movably arranged on the inner side of the movable seat along the vertical direction, two vertical rods and a threaded rod are vertically arranged on the lifting plate, the threaded rod is positioned between the two vertical rods, the lifting plate is fixedly provided with a lifting motor, an output shaft of the lifting motor is in transmission connection with the threaded rod through a belt pulley and a belt, a fixed rod is arranged below the lifting plate, two ends of the fixed rod are respectively and fixedly connected with the inner walls of two sides of the movable seat, the threaded rod is connected with the fixed rod through threads, the bottom ends of the two vertical rods sequentially penetrate through the fixed rod and the lower wall of the movable seat and extend to the outer side of the movable seat, and the bottom ends of the two vertical rods are both fixedly provided with a connecting block, the two vertical plates are both provided with vertical holes, and two ends of the upper extrusion roller respectively penetrate through the corresponding vertical holes and are rotatably connected with the corresponding connecting blocks, and the two vertical rods are slidably connected with the fixed rod.
Furthermore, supporting rollers are rotatably arranged at the tops of the two side tank walls of the soaking tank.
The invention has the beneficial effects that:
according to the invention, the waterborne polyurethane resin is added into the raw materials for preparing the waterborne slurry, and the traditional oleoresin is replaced by the waterborne polyurethane resin, so that the discharge of toxic wastewater and waste gas is avoided in the preparation process, and meanwhile, the prepared waterborne microfiber synthetic leather is harmless to human bodies and does not cause pollution to the environment in the use process, and is safe and environment-friendly;
the invention winds and rolls superfine fiber non-woven fabric on an unwinding roller of synthetic leather production equipment, adds water slurry into an impregnation groove, starts an unwinding motor, drives the unwinding roller to rotate and discharge materials, leads the superfine fiber non-woven fabric to pass through the upper supporting roller after being guided by a guide roller, then the superfine fiber non-woven fabric passes through a space between an upper extrusion roller and an upper clamping roller and then passes through a space between a lower extrusion roller and a lower clamping roller, starts a lifting motor, drives a threaded rod to rotate, enables a lifting plate to ascend due to the thread matching relationship of the threaded rod and a fixed rod, drives two connecting blocks to ascend through two vertical rods, drives the upper extrusion roller to ascend, extrudes the superfine fiber non-woven fabric upwards by the upper extrusion roller, enables the superfine fiber non-woven fabric to be tightened, and simultaneously clamps the superfine fiber non-woven fabric by the upper extrusion roller and the upper clamping roller, at the moment, the superfine fiber non-woven fabric between one supporting roll and the upper squeezing roll and the superfine fiber non-woven fabric between the lower squeezing roll and the other supporting roll are in a loose state, the superfine fiber non-woven fabric in the impregnation tank can be clamped and stretched, and fiber gaps of the superfine fiber non-woven fabric are opened, so that the aqueous slurry fully permeates the superfine fiber non-woven fabric, and the impregnation effect is improved;
the invention drives the movable seat to move through the movable air cylinder, the movable seat drives the two vertical plates to move and drives the upper extrusion roller, the lower extrusion roller and the clamping roller to reciprocate in the impregnation groove, so that the tightened superfine fiber non-woven fabric moves in the impregnation groove, the water-based slurry fully permeates the superfine fiber non-woven fabric, the superfine fiber non-woven fabric soaked with the water-based slurry is guided by the guide roller II and then enters the oven to be dried, and the dried superfine fiber non-woven fabric is wound by the winding roller. Greatly improves the infiltration effect of the superfine fiber non-woven fabric and ensures the quality of the water-based superfine fiber synthetic leather.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a perspective view of the synthetic leather production apparatus of the present invention;
FIG. 2 is a front sectional view of the synthetic leather production apparatus of the present invention;
FIG. 3 is a side sectional view of the synthetic leather production apparatus of the present invention;
FIG. 4 is a side view of the riser, upper squeeze roll, lower squeeze roll and pinch roll assembly of the present invention;
fig. 5 is an assembled elevation view of the riser, upper squeeze roll, lower squeeze roll and pinch roll of the present invention.
In the figure: 1. installing a bin; 2. unwinding rollers; 3. a wind-up roll; 4. a soaking tank; 5. a first guide roller; 6. a movable seat; 7. a moving cylinder; 8. an oven; 9. an unwinding motor; 10. a winding motor; 11. a support roller; 12. a lifting plate; 13. fixing the rod; 14. a threaded rod; 15. a vertical rod; 16. a lifting motor; 17. a guide rail; 18. a roller; 19. connecting blocks; 20. a vertical plate; 21. an upper squeeze roll; 22. a lower squeeze roll; 23. a pinch roller; 25. a second guide roller; 26. and a third guide roller.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1-5, a preparation process of aqueous microfiber synthetic leather specifically comprises the following steps:
firstly, winding and winding superfine fiber non-woven fabric on an unwinding roller 2 of synthetic leather production equipment, adding water-based slurry into an impregnation groove 4, starting an unwinding motor 9, driving the unwinding roller 2 to rotate and discharge materials by the unwinding motor 9, guiding the superfine fiber non-woven fabric by a guide roller I5 and then passing through the upper part of one support roller 11, then enabling the superfine fiber non-woven fabric to pass through a space between an upper extrusion roller 21 and an upper clamping roller 23 and then pass through a space between a lower extrusion roller 22 and a lower clamping roller 23, starting a lifting motor 16, driving a threaded rod 14 to rotate by the lifting motor 16, enabling a lifting plate 12 to ascend due to the threaded matching relationship between the threaded rod 14 and a fixed rod 13, driving two connecting blocks 19 to ascend by the lifting plate 12 through two vertical rods 15, driving the upper extrusion roller 21 to ascend by the two connecting blocks 19, and upwards extruding the superfine fiber non-woven fabric by the upper extrusion, the superfine fiber non-woven fabric is tightened, the upper squeezing roller 21 and the upper clamping roller 23 clamp the superfine fiber non-woven fabric, and at the moment, the superfine fiber non-woven fabric between one support roller 11 and the upper squeezing roller 21 and the superfine fiber non-woven fabric between the lower squeezing roller 22 and the other support roller 11 are in a loose state;
step two, starting the movable cylinder 7, driving the movable seat 6 to move by the movable cylinder 7, driving the two vertical plates 20 to move by the movable seat 6, driving the upper extrusion roller 21, the lower extrusion roller 22 and the clamping roller 23 to reciprocate in the impregnation groove 4, so that the tightened superfine fiber non-woven fabric moves in the impregnation groove 4, fully permeating the superfine fiber non-woven fabric with the aqueous slurry, guiding the superfine fiber non-woven fabric soaked with the aqueous slurry by the guide roller two 25, then drying the superfine fiber non-woven fabric in the oven 8, and rolling the dried superfine fiber non-woven fabric by the rolling roller 3 to obtain a semi-finished synthetic leather;
and step three, putting the semi-finished synthetic leather into a 3% sodium hydroxide aqueous solution for alkali decrement treatment, wherein the decrement temperature is 76 ℃, the decrement time is 1.2h, putting the semi-finished synthetic leather subjected to alkali decrement into a 17% citric acid solution, soaking at normal temperature for 18min for neutralization, washing with clear water until the pH value is 7, and then putting into an oven at 109 ℃ for drying to obtain the water-based microfiber synthetic leather.
The moving speed of the superfine fiber non-woven fabric in the soaking tank 4 is 2 cm/s.
The water-based slurry is prepared from the following raw materials in parts by mass: 41 parts of waterborne polyurethane resin, 4 parts of wood powder, 1 part of organic silicon quaternary ammonium salt, 3 parts of waterborne polyurethane thickener, 2 parts of polyether defoamer, 5 parts of organic silicon flatting agent, 6 parts of waterborne color paste and 26 parts of water.
Example 2
As shown in fig. 1-5, a preparation process of aqueous microfiber synthetic leather specifically comprises the following steps:
step one, the same as example 1;
step two, the same as example 1;
and step three, putting the semi-finished synthetic leather into a 6% sodium hydroxide aqueous solution for alkali decrement treatment, wherein the decrement temperature is 94 ℃, the decrement time is 1.4h, putting the semi-finished synthetic leather subjected to alkali decrement into a 23% citric acid solution, soaking for 26min at normal temperature for neutralization, washing with clear water until the pH value is 7, and then putting into an oven at 157 ℃ for drying to obtain the water-based microfiber synthetic leather.
The moving speed of the superfine fiber non-woven fabric in the soaking tank 4 is 13 cm/s.
The water-based slurry is prepared from the following raw materials in parts by mass: 44 parts of waterborne polyurethane resin, 6 parts of wood powder, 3 parts of organic silicon quaternary ammonium salt, 5 parts of waterborne polyurethane thickener, 4 parts of polyether defoamer, 6 parts of organic silicon leveling agent, 8 parts of waterborne color paste and 28 parts of water.
The synthetic leather production equipment comprises an installation bin 1, wherein an unwinding roller 2 and a winding roller 3 are respectively arranged at two ends inside the installation bin 1, the unwinding roller 2 and the winding roller 3 are rotatably connected with the installation bin 1, an unwinding motor 9 and a winding motor 10 are fixedly installed on the outer wall of one side of the installation bin 1, the end part of an output shaft of the unwinding motor 9 is fixedly connected with one end of the unwinding roller 2, the end part of an output shaft of the winding motor 10 is fixedly connected with one end of the winding roller 3, a guide roller I5 is arranged on one side of the unwinding roller 2, the guide roller I5 is rotatably connected with the installation bin 1, an immersion groove 4 is arranged on one side of the guide roller I5, and the immersion groove 4 is fixedly installed on the inner wall of the lower side of the installation bin 1;
the inner side of the soaking groove 4 is movably provided with two vertical plates 20 along the horizontal direction, two clamping rollers 23 are rotatably arranged between the two vertical plates 20, the two clamping rollers 23 are respectively positioned at the top and the bottom of the area between the two vertical plates 20, an upper squeeze roller 21 and a lower squeeze roller 22 are further arranged between the two vertical plates 20, the upper squeeze roller 21 and the lower squeeze roller 22 are respectively positioned between the two clamping rollers 23, the upper squeeze roller 21 is movably arranged between the two vertical plates 20 along the vertical direction, two ends of the lower squeeze roller 22 are respectively and rotatably connected with the two vertical plates 20 through bearings, one side of the soaking groove 4 is provided with a second guide roller 25, the second guide roller 25 is rotatably connected with the mounting bin 1, one side of the second guide roller 25 is provided with an oven 8, the oven 8 is fixedly connected with the mounting bin 1, and a third guide roller 26 is arranged between the oven 8 and the take-up roller 3, the third guide roller 26 is rotatably connected with the mounting bin 1.
The rectangle opening has been seted up to the upper wall of installation storehouse 1, there is removal seat 6 along horizontal direction movable mounting in the rectangle opening, the both sides of removing seat 6 are all rotated and are installed gyro wheel 18, the upside inner wall of installation storehouse 1 transversely is fixed with two guide rails 17, and two guide rails 17 are located rectangle open-ended both sides respectively, and two gyro wheels 18 cooperate with two guide rails 17 respectively, the upside inner wall fixed mounting of installation storehouse 1 has removal cylinder 7, the output rod tip of removal cylinder 7 with remove seat 6 fixed connection, the bottom of removing seat 6 and the top fixed connection of two riser 20.
The inner side of the movable seat 6 is movably provided with a lifting plate 12 along the vertical direction, the lifting plate 12 is vertically provided with two vertical rods 15 and a threaded rod 14, the threaded rod 14 is positioned between the two vertical rods 15, the lifting plate 12 is fixedly provided with a lifting motor 16, an output shaft of the lifting motor 16 is in transmission connection with the threaded rod 14 through a belt pulley and a belt, a fixed rod 13 is arranged below the lifting plate 12, two ends of the fixed rod 13 are respectively fixedly connected with the inner walls of two sides of the movable seat 6, the threaded rod 14 is in threaded connection with the fixed rod 13, the bottom ends of the two vertical rods 15 downwards sequentially penetrate through the fixed rod 13, the lower wall of the movable seat 6 and extend to the outer side of the movable seat 6, connecting blocks 19 are fixedly arranged at the bottom ends of the two vertical rods 15, vertical holes are respectively arranged on the two vertical plates 20, and two ends of the upper extrusion roller 21 respectively penetrate through the corresponding vertical holes, the two vertical rods 15 are slidably connected with the fixed rod 13.
And supporting rollers 11 are rotatably arranged at the tops of the two side tank walls of the soaking tank 4.
According to the invention, the waterborne polyurethane resin is added into the raw materials for preparing the waterborne slurry, and the traditional oleoresin is replaced by the waterborne polyurethane resin, so that the discharge of toxic wastewater and waste gas is avoided in the preparation process, and meanwhile, the prepared waterborne microfiber synthetic leather is harmless to human bodies and does not cause pollution to the environment in the use process, and is safe and environment-friendly;
the invention winds and rolls superfine fiber non-woven fabrics on an unwinding roller 2 of synthetic leather production equipment, adds water slurry into an impregnation groove 4, starts an unwinding motor 9, the unwinding motor 9 drives the unwinding roller 2 to rotate and discharge materials, the superfine fiber non-woven fabrics pass through the upper part of one supporting roller 11 after being guided by a guide roller I5, then the superfine fiber non-woven fabrics pass through a space between an upper extrusion roller 21 and an upper clamping roller 23 and then pass through a space between a lower extrusion roller 22 and a lower clamping roller 23, a lifting motor 16 is started, the lifting motor 16 drives a threaded rod 14 to rotate, the lifting plate 12 rises due to the thread fit relationship between the threaded rod 14 and a fixed rod 13, the lifting plate 12 drives two connecting blocks 19 to rise through two vertical rods 15, the two connecting blocks 19 drive the upper extrusion roller 21 to rise, the upper extrusion roller 21 extrudes the superfine fiber non-woven fabrics upwards to tighten the superfine fiber non-woven fabrics, meanwhile, the upper squeezing roller 21 and the upper clamping roller 23 clamp the superfine fiber non-woven fabric, at the moment, the superfine fiber non-woven fabric between one supporting roller 11 and the upper squeezing roller 21 and the superfine fiber non-woven fabric between the lower squeezing roller 22 and the other supporting roller 11 are in a loose state, the superfine fiber non-woven fabric in the impregnation tank 4 can be clamped and stretched, fiber gaps of the superfine fiber non-woven fabric are opened, and therefore the superfine fiber non-woven fabric is fully permeated by the aqueous slurry, and the infiltration effect is improved;
the invention drives the movable seat 6 to move through the movable cylinder 7, the movable seat 6 drives the two vertical plates 20 to move and drives the upper extrusion roller 21, the lower extrusion roller 22 and the clamping roller 23 to reciprocate in the impregnation groove 4, so that the tightened superfine fiber non-woven fabric moves in the impregnation groove 4, the water-based slurry fully permeates the superfine fiber non-woven fabric, the superfine fiber non-woven fabric soaked with the water-based slurry is guided by the guide roller II 25 and then enters the oven 8 for drying, and the dried superfine fiber non-woven fabric is wound by the winding roller 3. the invention winds the superfine fiber non-woven fabric on the upper extrusion roller 21 and the lower extrusion roller 22, so that the superfine fiber non-woven fabric between the upper extrusion roller 21 and the lower extrusion roller 22 is vertically distributed, and the superfine fiber non-woven fabric is driven to transversely move through the movable cylinder 7, so that the water-based slurry can pass through fiber gaps of the superfine fiber non-woven fabric when the superfine fiber, thereby make aqueous sizing agent further permeate superfine fiber non-woven fabrics, very big improvement the infiltration effect of superfine fiber non-woven fabrics, guaranteed the quality of this aqueous superfine synthetic leather.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (8)

1. The preparation process of the water-based microfiber synthetic leather is characterized by comprising the following steps:
firstly, winding and rolling superfine fiber non-woven fabric on an unwinding roller (2) of synthetic leather production equipment, adding water-based slurry into a soaking groove (4), starting an unwinding motor (9), driving the unwinding roller (2) to rotate and discharge materials by the unwinding motor (9), guiding the superfine fiber non-woven fabric by a guide roller (5) and then passing through the upper part of one support roller (11), then passing the superfine fiber non-woven fabric between an upper extrusion roller (21) and an upper clamping roller (23), then passing through the lower extrusion roller (22) and a lower clamping roller (23), starting a lifting motor (16), driving a threaded rod (14) to rotate by the lifting motor (16), enabling the lifting plate (12) to ascend due to the thread matching relationship between the threaded rod (14) and a fixed rod (13), driving two connecting blocks (19) to ascend by the lifting plate (12) through two vertical rods (15), the two connecting blocks (19) drive the upper squeezing rollers (21) to rise, the upper squeezing rollers (21) squeeze the superfine fiber non-woven fabric upwards to tighten the superfine fiber non-woven fabric, and meanwhile, the upper squeezing rollers (21) and the clamping rollers (23) above the upper squeezing rollers clamp the superfine fiber non-woven fabric, and at the moment, the superfine fiber non-woven fabric between one supporting roller (11) and the upper squeezing rollers (21) and the superfine fiber non-woven fabric between the lower squeezing rollers (22) and the other supporting roller (11) are in a loose state;
step two, a moving cylinder (7) is started, the moving cylinder (7) drives a moving seat (6) to move, the moving seat (6) drives two vertical plates (20) to move and drives an upper extrusion roller (21), a lower extrusion roller (22) and a clamping roller (23) to reciprocate in a soaking groove (4), so that the tightened superfine fiber non-woven fabric moves in the soaking groove (4), the water-based slurry fully permeates the superfine fiber non-woven fabric, the superfine fiber non-woven fabric soaked with the water-based slurry is guided by a guide roller II (25) and then enters an oven (8) for drying, and the dried superfine fiber non-woven fabric is rolled by a rolling roller (3) to obtain a semi-finished synthetic leather;
and step three, putting the semi-finished synthetic leather into a 2-7% sodium hydroxide aqueous solution for alkali decrement treatment, wherein the decrement temperature is 75-96 ℃, the decrement time is 1-1.5h, putting the semi-finished synthetic leather with the alkali decrement into a 15-25% citric acid solution, soaking at normal temperature for 15-30min for neutralization, washing with clear water until the pH value is 7, and then putting into an oven with the temperature of 105-160 ℃ for drying to obtain the water-based microfiber synthetic leather.
2. The preparation process of the waterborne microfiber synthetic leather according to claim 1, wherein the movement speed of the microfiber non-woven fabric in the soaking tank (4) is 1-15 cm/s.
3. The preparation process of the water-based microfiber synthetic leather according to claim 1, wherein the water-based slurry is prepared from the following raw materials in parts by mass: 40-45 parts of waterborne polyurethane resin, 4-6 parts of wood powder, 1-3 parts of organic silicon quaternary ammonium salt, 3-5 parts of waterborne polyurethane thickener, 2-4 parts of polyether defoamer, 5-6 parts of organic silicon flatting agent, 6-8 parts of waterborne color paste and 25-30 parts of water.
4. The preparation process of the water-based microfiber synthetic leather according to claim 1, wherein the synthetic leather production equipment comprises an installation bin (1), an unwinding roller (2) and a winding roller (3) are respectively arranged at two ends inside the installation bin (1), the unwinding roller (2) and the winding roller (3) are rotatably connected with the installation bin (1), an unwinding motor (9) and a winding motor (10) are fixedly installed on the outer wall of one side of the installation bin (1), the end portion of an output shaft of the unwinding motor (9) is fixedly connected with one end of the unwinding roller (2), the end portion of an output shaft of the winding motor (10) is fixedly connected with one end of the winding roller (3), a first guide roller (5) is arranged at one side of the unwinding roller (2), the first guide roller (5) is rotatably connected with the installation bin (1), a soaking groove (4) is arranged at one side of the first guide roller (5), the soaking groove (4) is fixedly arranged on the inner wall of the lower side of the mounting bin (1);
the inner side of the soaking groove (4) is movably provided with two vertical plates (20) along the horizontal direction, two clamping rollers (23) are rotatably arranged between the two vertical plates (20), the two clamping rollers (23) are respectively positioned at the top and the bottom of the area between the two vertical plates (20), an upper squeeze roller (21) and a lower squeeze roller (22) are further arranged between the two vertical plates (20), the upper squeeze roller (21) and the lower squeeze roller (22) are respectively positioned between the two clamping rollers (23), the upper squeeze roller (21) is movably arranged between the two vertical plates (20) along the vertical direction, two ends of the lower squeeze roller (22) are respectively rotatably connected with the two vertical plates (20) through bearings, one side of the soaking groove (4) is provided with a second guide roller (25), the second guide roller (25) is rotatably connected with the mounting bin (1), one side of the second guide roller (25) is provided with an oven (8), the drying oven (8) is fixedly connected with the mounting bin (1), a third guide roller (26) is arranged between the drying oven (8) and the winding roller (3), and the third guide roller (26) is rotatably connected with the mounting bin (1).
5. The preparation process of the water-based microfiber synthetic leather according to claim 4, wherein a rectangular opening is formed in an upper wall of the mounting bin (1), a moving seat (6) is movably mounted in the rectangular opening in the horizontal direction, rollers (18) are rotatably mounted on two sides of the moving seat (6), two guide rails (17) are transversely fixed on the inner wall of the upper side of the mounting bin (1), the two guide rails (17) are respectively located on two sides of the rectangular opening, the two rollers (18) are respectively matched with the two guide rails (17), a moving cylinder (7) is fixedly mounted on the inner wall of the upper side of the mounting bin (1), an end portion of an output rod of the moving cylinder (7) is fixedly connected with the moving seat (6), and the bottom of the moving seat (6) is fixedly connected with top ends of the two vertical plates (20).
6. The preparation process of water-based microfiber synthetic leather according to claim 5, wherein a lifting plate (12) is movably mounted on the inner side of the movable base (6) along the vertical direction, two vertical rods (15) and a threaded rod (14) are vertically arranged on the lifting plate (12), the threaded rod (14) is located between the two vertical rods (15), a lifting motor (16) is fixedly mounted on the lifting plate (12), an output shaft of the lifting motor (16) is in transmission connection with the threaded rod (14) through a belt pulley and a belt, a fixing rod (13) is arranged below the lifting plate (12), two ends of the fixing rod (13) are fixedly connected with inner walls of two sides of the movable base (6), the threaded rod (14) is in threaded connection with the fixing rod (13), and the bottom ends of the two vertical rods (15) sequentially penetrate through the fixing rod (13) and the fixing rod (13) downwards, Remove seat (6) lower wall and extend to the outside of removing seat (6), and the equal fixed mounting in bottom of two montants (15) has connecting block (19), two all seted up perpendicular hole on riser (20), the both ends of going up squeeze roll (21) are passed corresponding perpendicular hole respectively and are rotated with corresponding connecting block (19) and be connected, two montants (15) and dead lever (13) sliding connection.
7. The preparation process of the water-based microfiber synthetic leather according to claim 4, wherein the top of the two side walls of the soaking tank (4) is rotatably provided with a supporting roller (11).
8. The preparation process of the water-based microfiber synthetic leather according to claim 4, wherein the working method of the synthetic leather production equipment specifically comprises the following steps:
firstly, winding and winding superfine fiber non-woven fabrics on an unwinding roller (2), adding aqueous slurry into a soaking groove (4), starting an unwinding motor (9), driving the unwinding roller (2) to rotate and discharge materials by the unwinding motor (9), guiding the superfine fiber non-woven fabrics by a guide roller I (5) and then passing through the upper part of one support roller (11), then passing the superfine fiber non-woven fabrics between an upper extrusion roller (21) and an upper clamping roller (23), then passing between a lower extrusion roller (22) and a lower clamping roller (23), starting a lifting motor (16), driving a threaded rod (14) to rotate by the lifting motor (16), enabling the lifting plate (12) to ascend due to the thread matching relationship between the threaded rod (14) and a fixed rod (13), driving two connecting blocks (19) to ascend by the lifting plate (12) through two vertical rods (15), driving the upper extrusion roller (21) by the two connecting blocks (19), the upper squeezing roller (21) squeezes the superfine fiber non-woven fabric upwards to tighten the superfine fiber non-woven fabric, and the upper squeezing roller (21) and the upper clamping roller (23) clamp the superfine fiber non-woven fabric, so that the superfine fiber non-woven fabric between one support roller (11) and the upper squeezing roller (21) and the superfine fiber non-woven fabric between the lower squeezing roller (22) and the other support roller (11) are in a loose state;
step two, start moving cylinder (7), moving cylinder (7) drive and move seat (6) and remove, it drives two riser (20) and removes to move seat (6), and drive squeeze roll (21), reciprocating motion in soaking groove (4) is being contained in squeeze roll (22) and pinch roll (23) down, make the superfine fiber non-woven fabrics that tighten remove in containing soaking groove (4), make aqueous slurry fully permeate superfine fiber non-woven fabrics, the superfine fiber non-woven fabrics that soaks aqueous slurry gets into oven (8) after leading through guide roll two (25) and dries, superfine fiber non-woven fabrics after the stoving carry out the rolling through wind-up roll (3).
CN202011493334.9A 2020-12-16 2020-12-16 Preparation process of water-based microfiber synthetic leather Pending CN112695542A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114875679A (en) * 2022-03-31 2022-08-09 杭州卡洛实业有限公司 Solvent-free superfine fiber synthetic leather production line and production process thereof
CN115323669A (en) * 2022-08-23 2022-11-11 浙江省平湖华神皮革有限公司 Production process of microfiber leather gloves
CN116060250A (en) * 2023-03-16 2023-05-05 潍坊石花化工建材有限公司 Waterproof coiled material production oiling equipment
CN116395454A (en) * 2023-06-08 2023-07-07 扬州创达机械有限公司 Traction device for toluene extractor
CN115323669B (en) * 2022-08-23 2024-06-07 浙江省平湖华神皮革有限公司 Production process of microfiber leather glove

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110685159A (en) * 2019-09-03 2020-01-14 清远市齐力合成革有限公司 Production method of water-based microfiber synthetic leather

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110685159A (en) * 2019-09-03 2020-01-14 清远市齐力合成革有限公司 Production method of water-based microfiber synthetic leather

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114875679A (en) * 2022-03-31 2022-08-09 杭州卡洛实业有限公司 Solvent-free superfine fiber synthetic leather production line and production process thereof
CN114875679B (en) * 2022-03-31 2023-10-27 杭州卡洛实业有限公司 Solvent-free superfine fiber synthetic leather production line and production process thereof
CN115323669A (en) * 2022-08-23 2022-11-11 浙江省平湖华神皮革有限公司 Production process of microfiber leather gloves
CN115323669B (en) * 2022-08-23 2024-06-07 浙江省平湖华神皮革有限公司 Production process of microfiber leather glove
CN116060250A (en) * 2023-03-16 2023-05-05 潍坊石花化工建材有限公司 Waterproof coiled material production oiling equipment
CN116395454A (en) * 2023-06-08 2023-07-07 扬州创达机械有限公司 Traction device for toluene extractor
CN116395454B (en) * 2023-06-08 2023-08-11 扬州创达机械有限公司 Traction device for toluene extractor

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