CN112680981A - Environment-friendly water-based PU synthetic leather generation process - Google Patents
Environment-friendly water-based PU synthetic leather generation process Download PDFInfo
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- CN112680981A CN112680981A CN202011493348.0A CN202011493348A CN112680981A CN 112680981 A CN112680981 A CN 112680981A CN 202011493348 A CN202011493348 A CN 202011493348A CN 112680981 A CN112680981 A CN 112680981A
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Abstract
The invention discloses an environment-friendly water-based PU synthetic leather generation process, which comprises the following steps: mixing fibrilia, rock wool fiber and thermoplastic fiber, opening, carding to form a net and carrying out needling processing to obtain a cloth blank, soaking and drying the cloth blank to obtain a base cloth layer, carrying out hot-pressing integration on the base cloth layer and a foaming layer to obtain a semi-finished synthetic leather product, drying the semi-finished synthetic leather product in a warm oven II, and removing the peculiar smell of the semi-finished synthetic leather product to obtain the environment-friendly water-based PU synthetic leather; the synthetic leather preparation material is environment-friendly, no toxic gas is generated in the preparation and use processes, and the synthetic leather preparation material has good environmental protection property; the invention can control the extrusion degree of the adjusting block to the cloth blank by the adjusting cylinder, tension the cloth blank and enlarge the aperture of the internal fiber of the cloth blank, thereby enabling the soak solution to fully enter the inside of the cloth blank and improving the soaking effect.
Description
Technical Field
The invention relates to the technical field of synthetic leather, and particularly relates to an environment-friendly waterborne PU synthetic leather generation process.
Background
Synthetic leather is a plastic product which simulates the composition and structure of natural leather and can be used as a substitute material for the natural leather, and traditionally, an adhesive layer, a foaming layer, a surface layer and a surface treatment layer are all made of Polyurethane (PU) chemical materials containing solvents such as DMF and the like. Strictly speaking, the solvents such as DMF are replaced by chemical materials using water as the solvent, and the synthetic leather prepared by coating the foaming layer of the water solvent on the surface of the base cloth is the water-based leather. Apparently, only solvents such as DMF in chemical materials are replaced by water, but from the viewpoint of scientific research, the quality changes of raw material selection, distribution design, process, equipment type selection and the like are already generated in many aspects; traditional synthetic leather is difficult for degrading, produces toxic gas easily in preparation and use, and the feature of environmental protection is poor, and when the basic unit of synthetic leather was preparing, the cloth base can't fully contact with the soak, and the cloth base soaks inadequately, and traditional synthetic leather production step is loaded down with trivial details moreover, and production efficiency is low.
Disclosure of Invention
The invention aims to provide an environment-friendly water-based PU synthetic leather generation process, wherein a cloth blank is prepared by mixing liquid hemp fiber, rock wool fiber and a thermoplastic fiber material, opening the mixture through an opener, and carding, web forming and needle punching through a carding machine, and both a soaking solution and a foaming material are pollution-free to the environment, so that a generated base cloth layer and a generated foaming layer are environment-friendly;
the invention drives the discharging roller to rotate and discharge through the discharging motor, so that a cloth blank enters the soaking cylinder from an opening, the cloth blank is positioned below the coating mechanism, the adjusting cylinder is started, the adjusting cylinder drives the moving seat to move, the moving seat drives the adjusting block to be far away from the fixed plate through the push rod, the adjusting block extrudes the cloth blank, the coating motor is started, the coating motor drives the coating mechanism to rotate, the coating mechanism drives the cloth blank to move into soaking liquid for soaking, the invention can control the extrusion degree of the adjusting block on the cloth blank through the adjusting cylinder, thereby tensioning the cloth blank and enlarging the aperture of internal fibers of the cloth blank, so that the soaking liquid can fully enter the inside of the cloth blank, the soaking effect is improved, the cloth blank drives the coating roller to rotate while moving, the soaking liquid is coated on the upper surface of the cloth blank through the coating roller, and the soaking liquid is fully contacted with the upper surface and the lower surface of the cloth blank, the method avoids insufficient soaking of the cloth blank, and solves the technical problems that the cloth blank cannot be fully contacted with a soaking solution and the cloth blank is insufficiently soaked when a base layer of the traditional synthetic leather is prepared;
the invention adds the foaming material into a stirrer, uniformly stirs the foaming material to generate slurry, extrudes the slurry, carries out vacuum cooling and shaping on the slurry, cuts the slurry to generate a foaming layer, winding and winding the foaming layer on a discharging roller II, starting a discharging motor II, driving the discharging roller II to rotate and discharge materials by the discharging motor II, enabling the base cloth layer and the foaming layer to pass between an upper hot pressing roller and a lower hot pressing roller, starting a lifting cylinder, driving the upper hot pressing roller to lift by the lifting cylinder, adjusting the distance between the upper hot pressing roller and the lower hot pressing roller, driving the lower hot pressing roller to rotate by the hot pressing motor, integrating the base cloth layer and the foaming layer into a whole, soaking and drying the cloth blank, and laminating and removing peculiar smell of the base cloth layer and the foaming layer in a shell, this synthetic leather processing equipment adopts the integrated design, has reduced the processing step, has improved production efficiency, has solved traditional synthetic leather production steps loaded down with trivial details, technical problem that production efficiency is low.
The purpose of the invention can be realized by the following technical scheme:
an environment-friendly water-based PU synthetic leather generation process specifically comprises the following steps:
step one, uniformly mixing fibrilia, rock wool fiber and thermoplastic fiber according to a mass ratio of 1:1.5:1.2 to obtain a mixture, opening the mixture through an opener, carding the opened mixture through a carding machine to form a net and carrying out needling processing to enable the fibrilia, the rock wool fiber and the thermoplastic fiber in the mixture to be intertwined with each other to generate a cloth blank with uniform thickness, winding the cloth blank on a discharging roller I of synthetic leather processing equipment, driving the discharging roller I to rotate and discharge the cloth by a discharging motor to enable the cloth blank to enter an immersion cylinder from an opening, enabling the cloth blank to be positioned below a coating and brushing mechanism, starting an adjusting cylinder, driving a moving seat to move by the adjusting cylinder, driving an adjusting block to be far away from a fixed plate through a push rod of the moving seat, extruding the cloth blank by the adjusting block to tension the cloth blank, amplifying the aperture in the fiber, starting a coating and brushing motor to drive the coating and brushing mechanism to rotate, the coating mechanism drives the cloth blank to move into the soaking liquid for soaking, the cloth blank drives the coating roller to rotate while moving, the coating roller coats the soaking liquid on the upper surface of the cloth blank, the soaked cloth blank moves into a first drying oven, and the cloth blank is dried to obtain a base cloth layer;
and step two, adding a foaming material into a stirrer, uniformly stirring at the temperature of 95-120 ℃ to generate slurry, extruding, vacuum cooling and shaping the slurry, cutting to generate a foaming layer, winding the foaming layer on a discharging roller II, starting a discharging motor II, driving the discharging roller II to rotate and discharge materials by the discharging motor II, enabling a base cloth layer and the foaming layer to pass through a space between an upper hot pressing roller and a lower hot pressing roller, starting a lifting cylinder, driving the upper hot pressing roller to lift by the lifting cylinder, adjusting the distance between the upper hot pressing roller and the lower hot pressing roller, driving the lower hot pressing roller to rotate by the hot pressing motor, integrating the base cloth layer and the foaming layer into a whole to obtain a synthetic leather semi-finished product, drying the synthetic leather semi-finished product in a warm drying oven II, and removing the peculiar smell of the synthetic leather semi-finished product to obtain the environment-.
Further, the drying temperature of the first drying oven 8 is 75-110 ℃, and the drying temperature of the second drying oven 14 is 140-170 ℃.
Further, the soaking solution is prepared from the following raw materials in parts by mass: 45-50 parts of polyurethane resin, 18-22 parts of water, 2-5 parts of wood powder, 6-8 parts of calcium carbonate and 5-7 parts of water-based color paste.
Further, the foaming material is prepared from the following raw materials in parts by mass: 25-30 parts of waterborne polyurethane resin, 15-18 parts of polyethylene, 30-40 parts of acrylic resin, 2-5 parts of polystyrene foaming agent, 7-9 parts of organic silicon leveling agent, 9-12 parts of polyether defoamer, 8-10 parts of waterborne polyurethane thickener and 15-20 parts of water.
Further, the synthetic leather processing equipment comprises a shell, wherein a discharging roller I and a receiving roller are respectively rotatably mounted at two ends inside the shell, an immersing cylinder is fixedly mounted at one side of the discharging roller I, soaking liquid is filled at the bottom of the immersing cylinder, a brushing mechanism is rotatably mounted at the inner side of the immersing cylinder, openings are respectively formed in two sides of the immersing cylinder, a brushing motor for driving the brushing mechanism to rotate is fixedly mounted on the outer wall of one side of the shell, a drying oven I is arranged at one side of the immersing cylinder and is fixedly connected with the inner wall of the shell, a discharging roller II is arranged above one side of the drying oven I and is rotatably connected with the shell, a roller frame is arranged at one side of the discharging roller II and is movably mounted at the inner side of the shell along the vertical direction, an upper hot pressing roller is rotatably mounted on the roller frame, and a lifting cylinder is fixedly mounted at the top of the shell, the bottom end of an output rod of the lifting cylinder penetrates through the upper wall of the shell and extends to the inner side of the shell, the bottom end of the output rod of the lifting cylinder is fixedly connected with the top of the roller frame, a lower hot pressing roller is rotatably installed right below the upper hot pressing roller, a hot pressing motor is fixedly installed on the outer wall of one side of the shell, the end part of an output shaft of the hot pressing motor is fixedly connected with one end of the lower hot pressing roller, and a second drying oven is arranged on one side of the upper hot pressing roller;
scribble brush mechanism includes the pivot, fixed mounting has a plurality of fixed plate in the pivot, and a plurality of fixed plate is equal radian annular distribution, and it has two hinge bars all to articulate on a plurality of fixed plate, and two hinge bars are parallel to each other, and two hinge bars keep away from the one end that corresponds the fixed plate and articulate with the regulating block, a plurality of mounting groove has been seted up to one side that corresponds the fixed plate is kept away from to the regulating block, and a plurality of mounting groove is equidistant distribution, all rotates in a plurality of mounting groove and installs and scribble the brush roll, and equal fixed mounting has adjust cylinder on a plurality of fixed plate, adjust cylinder's output lever tip fixed mounting has the removal seat, remove seat and corresponding fixed plate sliding connection, the fixed plate is articulated with the one end of push rod, the other end of push rod.
Further, the upper wall and the lower wall of the two openings are rotatably provided with supporting wheels.
Further, a first discharging motor and a second receiving motor are fixedly mounted on the outer wall of one side of the shell, the end portion of an output shaft of the first discharging motor is fixedly connected with one end of the first discharging roller, the end portion of an output shaft of the second receiving motor is fixedly connected with one end of the second receiving roller, a second discharging motor is fixedly mounted on the outer wall of one side of the shell, the end portion of the output shaft of the second discharging motor is fixedly connected with the second discharging roller, and the end portion of the output shaft of the coating motor penetrates through the shell, the soaking cylinder and is fixedly connected with one end of the rotating shaft.
The invention has the beneficial effects that:
the cloth blank is prepared by mixing the liquid jute fiber, the rock wool fiber and the thermoplastic fiber material, opening the mixture through an opener, carding to form a net and performing needle punching through a carding machine, and the soaking solution and the foaming material are pollution-free to the environment, so that the generated base cloth layer and the generated foaming layer are environment-friendly;
the invention drives the discharging roller to rotate and discharge through the discharging motor, so that a cloth blank enters the soaking cylinder from an opening, the cloth blank is positioned below the coating mechanism, the adjusting cylinder is started, the adjusting cylinder drives the moving seat to move, the moving seat drives the adjusting block to be far away from the fixed plate through the push rod, the adjusting block extrudes the cloth blank, the coating motor is started, the coating motor drives the coating mechanism to rotate, the coating mechanism drives the cloth blank to move into soaking liquid for soaking, the invention can control the extrusion degree of the adjusting block on the cloth blank through the adjusting cylinder, thereby tensioning the cloth blank and enlarging the aperture of internal fibers of the cloth blank, so that the soaking liquid can fully enter the inside of the cloth blank, the soaking effect is improved, the cloth blank drives the coating roller to rotate while moving, the soaking liquid is coated on the upper surface of the cloth blank through the coating roller, and the soaking liquid is fully contacted with the upper surface and the lower surface of the cloth blank, the cloth blank is prevented from being insufficiently soaked.
According to the invention, the foaming material is added into the stirrer and is uniformly stirred to generate slurry, the slurry is extruded, cooled and shaped in vacuum and cut to generate a foaming layer, the foaming layer is wound on the discharging roller II, the discharging motor II is started, the discharging roller II is driven by the discharging motor II to rotate and discharge, the base cloth layer and the foaming layer pass through the space between the upper hot pressing roller and the lower hot pressing roller, the lifting cylinder is started, the lifting cylinder drives the upper hot pressing roller to lift, the space between the upper hot pressing roller and the lower hot pressing roller is adjusted, the hot pressing motor drives the lower hot pressing roller to rotate, and the base cloth layer and the foaming layer are combined into a whole.
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 processing apparatus of the present invention;
FIG. 2 is a cross-sectional view of the synthetic leather processing apparatus of the present invention;
FIG. 3 is a view showing the internal structure of the infusion cylinder of the present invention;
FIG. 4 is a schematic structural view of the painting mechanism of the present invention;
fig. 5 is an assembly view of the upper heat pressing roll, the lifting cylinder and the roll stand according to the present invention.
In the figure: 1. a housing; 2. a first discharging roller; 3. a material receiving roller; 4. a discharging roller II; 6. a soaking cylinder; 61. an opening; 7. a brushing mechanism; 8. a first oven; 10. a lower hot press roll; 11. an upper hot press roll; 12. a lifting cylinder; 13. a roller frame; 14. a second oven; 15. a first discharging motor; 16. a material receiving motor; 17. a discharging motor II; 18. coating a motor; 19. a hot-pressing motor; 20. a support wheel; 21. a rotating shaft; 22. a fixing plate; 23. an adjusting block; 24. a hinged lever; 25. a brushing roller; 26. a movable seat; 27. an adjusting cylinder; 28. a push rod.
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, an environment-friendly waterborne PU synthetic leather generation process specifically comprises the following steps:
step one, uniformly mixing fibrilia, rock wool fiber and thermoplastic fiber according to a mass ratio of 1:1.5:1.2 to obtain a mixture, opening the mixture through an opener, carding the opened mixture through a carding machine to form a net and carrying out needling processing, so that the fibrilia, the rock wool fiber and the thermoplastic fiber in the mixture are mutually entangled to generate a cloth blank with uniform thickness, winding the cloth blank on a discharging roller I2 of synthetic leather processing equipment, driving the discharging roller I2 to rotate and discharge through a discharging motor I15, enabling the cloth blank to enter an immersion cylinder 6 from an opening 61, enabling the cloth blank to be positioned below a coating and brushing mechanism 7, starting an adjusting cylinder 27, driving a moving seat 26 to move through the adjusting cylinder 27, driving an adjusting block 23 to be far away from a fixed plate 22 through a push rod 28, extruding the cloth blank through the adjusting block 23 to tension the cloth blank, and amplifying the aperture in the fiber, starting a brushing motor 18, driving the brushing mechanism 7 to rotate by the brushing motor 18, driving a cloth blank to move into a soaking solution for soaking by the brushing mechanism 7, driving a brushing roller 25 to rotate while the cloth blank moves, brushing the soaking solution on the upper surface of the cloth blank by the brushing roller 25, moving the soaked cloth blank into a first drying oven 8, and drying the cloth blank to obtain a base cloth layer;
adding a foaming material into a stirrer, uniformly stirring at 96 ℃ to generate slurry, extruding, vacuum cooling and shaping the slurry, cutting to generate a foaming layer, winding the foaming layer on a discharging roller II 4, starting a discharging motor II 17, driving the discharging roller II 4 to rotate and discharge by the discharging motor II 17, enabling a base cloth layer and the foaming layer to pass through a space between an upper hot pressing roller 11 and a lower hot pressing roller 10, starting a lifting cylinder 12, driving the upper hot pressing roller 11 to lift by the lifting cylinder 12, adjusting the distance between the upper hot pressing roller 11 and the lower hot pressing roller 10, driving the lower hot pressing roller 10 to rotate by a hot pressing motor 19, integrating the base cloth layer and the foaming layer into a whole to obtain a semi-finished product, drying the semi-finished product of the synthetic leather in a warm oven II 14, and removing the peculiar smell of the semi-finished product of the synthetic leather to obtain the environment-friendly water-based PU synthetic leather.
The drying temperature of the first drying oven 8 is 78 ℃, and the drying temperature of the second drying oven 14 is 145 ℃.
The soaking solution is prepared from the following raw materials in parts by mass: 46 parts of polyurethane resin, 19 parts of water, 3 parts of wood powder, 6 parts of calcium carbonate and 5 parts of water-based color paste.
The foaming material is prepared from the following raw materials in parts by mass: 26 parts of waterborne polyurethane resin, 16 parts of polyethylene, 31 parts of acrylic resin, 3 parts of polystyrene foaming agent, 8 parts of organic silicon flatting agent, 10 parts of polyether defoaming agent, 8 parts of waterborne polyurethane thickener and 16 parts of water.
Example 2
As shown in fig. 1-5, an environment-friendly waterborne PU synthetic leather generation process specifically comprises the following steps:
step one, uniformly mixing fibrilia, rock wool fiber and thermoplastic fiber according to a mass ratio of 1:1.5:1.2 to obtain a mixture, opening the mixture through an opener, carding the opened mixture through a carding machine to form a net and carrying out needling processing, so that the fibrilia, the rock wool fiber and the thermoplastic fiber in the mixture are mutually entangled to generate a cloth blank with uniform thickness, winding the cloth blank on a discharging roller I2 of synthetic leather processing equipment, driving the discharging roller I2 to rotate and discharge through a discharging motor I15, enabling the cloth blank to enter an immersion cylinder 6 from an opening 61, enabling the cloth blank to be positioned below a coating and brushing mechanism 7, starting an adjusting cylinder 27, driving a moving seat 26 to move through the adjusting cylinder 27, driving an adjusting block 23 to be far away from a fixed plate 22 through a push rod 28, extruding the cloth blank through the adjusting block 23 to tension the cloth blank, and amplifying the aperture in the fiber, starting a brushing motor 18, driving the brushing mechanism 7 to rotate by the brushing motor 18, driving a cloth blank to move into a soaking solution for soaking by the brushing mechanism 7, driving a brushing roller 25 to rotate while the cloth blank moves, brushing the soaking solution on the upper surface of the cloth blank by the brushing roller 25, moving the soaked cloth blank into a first drying oven 8, and drying the cloth blank to obtain a base cloth layer;
adding a foaming material into a stirrer, uniformly stirring at 118 ℃ to generate slurry, extruding, vacuum cooling and shaping the slurry, cutting to generate a foaming layer, winding the foaming layer on a discharging roller II 4, starting a discharging motor II 17, driving the discharging roller II 4 to rotate and discharge by the discharging motor II 17, enabling a base cloth layer and the foaming layer to pass through a space between an upper hot pressing roller 11 and a lower hot pressing roller 10, starting a lifting cylinder 12, driving the upper hot pressing roller 11 to lift by the lifting cylinder 12, adjusting the distance between the upper hot pressing roller 11 and the lower hot pressing roller 10, driving the lower hot pressing roller 10 to rotate by a hot pressing motor 19, integrating the base cloth layer and the foaming layer into a whole to obtain a semi-finished product, drying the semi-finished product of the synthetic leather in a warm oven II 14, and removing the peculiar smell of the semi-finished product of the synthetic leather to obtain the environment-friendly water-based PU synthetic leather.
The drying temperature of the first drying oven 8 is 105 ℃, and the drying temperature of the second drying oven 14 is 165 ℃.
The soaking solution is prepared from the following raw materials in parts by mass: 49 parts of polyurethane resin, 21 parts of water, 4 parts of wood powder, 7 parts of calcium carbonate and 7 parts of water-based color paste.
The foaming material is prepared from the following raw materials in parts by mass: 29 parts of waterborne polyurethane resin, 17 parts of polyethylene, 39 parts of acrylic resin, 4 parts of polystyrene foaming agent, 9 parts of organic silicon flatting agent, 11 parts of polyether defoaming agent, 10 parts of waterborne polyurethane thickener and 19 parts of water.
The synthetic leather processing equipment comprises a shell 1, wherein a discharging roller I2 and a receiving roller 3 are respectively rotatably mounted at two ends inside the shell 1, an immersing cylinder 6 is fixedly mounted at one side of the discharging roller I2, soaking liquid is mounted at the bottom of the immersing cylinder 6, a painting mechanism 7 is rotatably mounted at the inner side of the immersing cylinder 6, openings 61 are respectively formed in two sides of the immersing cylinder 6, a painting motor 18 for driving the painting mechanism 7 to rotate is fixedly mounted on the outer wall of one side of the shell 1, an oven I8 is arranged at one side of the immersing cylinder 6, the oven I8 is fixedly connected with the inner wall of the shell 1, a discharging roller II 4 is arranged above one side of the oven I8, the discharging roller II 4 is rotatably connected with the shell 1, a roller frame 13 is arranged at one side of the discharging roller II 4, and the roller frame 13 is movably mounted at the inner side of the shell 1 along the vertical direction, an upper hot pressing roller 11 is rotatably mounted on the roller frame 13, a lifting cylinder 12 is fixedly mounted at the top of the shell 1, the bottom end of an output rod of the lifting cylinder 12 penetrates through the upper wall of the shell 1 and extends to the inner side of the shell 1, the bottom end of the output rod of the lifting cylinder 12 is fixedly connected with the top of the roller frame 13, a lower hot pressing roller 10 is rotatably mounted right below the upper hot pressing roller 11, a hot pressing motor 19 is fixedly mounted on the outer wall of one side of the shell 1, the end part of an output shaft of the hot pressing motor 19 is fixedly connected with one end of the lower hot pressing roller 10, and a second oven 14 is arranged on one side of the upper hot pressing roller 11;
the painting mechanism 7 comprises a rotating shaft 21, a plurality of fixing plates 22 are fixedly mounted on the rotating shaft 21, the fixing plates 22 are distributed in an annular shape with equal radian, two hinged rods 24 are hinged on the fixing plates 22, the two hinged rods 24 are parallel to each other, one ends of the two hinged rods 24 far away from the corresponding fixing plates 22 are hinged with an adjusting block 23, a plurality of mounting grooves are arranged on one side of the adjusting block 23 away from the corresponding fixing plate 22, the mounting grooves are distributed at equal intervals, the coating roller 25 is rotatably mounted in each mounting groove, the adjusting cylinders 27 are fixedly mounted on the fixing plates 22, the end part of the output rod of the adjusting cylinder 27 is fixedly provided with a movable seat 26, the movable seat 26 is connected with the corresponding fixed plate 22 in a sliding way, the fixed plate 22 is hinged with one end of a push rod 28, and the other end of the push rod 28 is hinged with the corresponding adjusting block 23.
The upper and lower walls of both openings 61 are rotatably mounted with support wheels 20.
The utility model discloses a material collecting device, including casing 1, one side outer wall fixed mounting of casing 1 has blowing motor one 15 and receipts material motor 16, the output shaft tip of blowing motor one 15 and the one end fixed connection of blowing roller one 2, the output shaft tip of receiving material motor 16 and the one end fixed connection of receiving material roller 3, one side outer wall fixed mounting of casing 1 has blowing motor two 17, the output shaft tip and the blowing roller two 4 fixed connection of blowing motor two 17, the output shaft tip of applying paint motor 18 with a brush runs through casing 1, soaks a section of thick bamboo 6 and with the one end fixed connection of pivot 21.
The cloth blank is prepared by mixing the liquid jute fiber, the rock wool fiber and the thermoplastic fiber material, opening the mixture through an opener, carding to form a net and performing needle punching through a carding machine, and the soaking solution and the foaming material are pollution-free to the environment, so that the generated base cloth layer and the generated foaming layer are environment-friendly;
the invention drives the discharge roller I2 to rotate and discharge through the discharge motor I15, so that a cloth blank enters the soaking cylinder 6 from the opening 61, the cloth blank is positioned below the painting mechanism 7 at the moment, the adjusting cylinder 27 is started, the adjusting cylinder 27 drives the moving seat 26 to move, the moving seat 26 drives the adjusting block 23 to be far away from the fixed plate 22 through the push rod 28, the adjusting block 23 extrudes the cloth blank, the painting motor 18 is started, the painting motor 18 drives the painting mechanism 7 to rotate, the painting mechanism 7 drives the cloth blank to move into soaking liquid for soaking, the invention can control the extrusion degree of the adjusting block 23 on the cloth blank through the adjusting cylinder 27, so that the cloth blank is tensioned, the aperture of internal fibers of the cloth blank is enlarged, so that the soaking liquid can fully enter the inside of the cloth blank, the soaking effect is improved, the cloth blank drives the painting roller 25 to rotate while moving, the painting liquid on the upper surface of the cloth blank through the painting roller 25, so that the soaking solution is fully contacted with the upper surface and the lower surface of the cloth blank, and the insufficient soaking of the cloth blank is avoided.
According to the invention, the foaming material is added into the stirrer and is uniformly stirred to generate slurry, the slurry is extruded, cooled and shaped in vacuum and cut to generate a foaming layer, the foaming layer is wound on the discharging roller II 4, the discharging motor II 17 is started, the discharging roller II 4 is driven by the discharging motor II 17 to rotate and discharge, the base fabric layer and the foaming layer pass through the space between the upper hot pressing roller 11 and the lower hot pressing roller 10, the lifting cylinder 12 is started, the lifting cylinder 12 drives the upper hot pressing roller 11 to lift, the distance between the upper hot pressing roller 11 and the lower hot pressing roller 10 is adjusted, the lower hot pressing roller 10 is driven by the hot pressing motor 19 to rotate, and the base fabric layer and the foaming layer are combined into a whole.
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. An environment-friendly waterborne PU synthetic leather generation process is characterized by comprising the following steps:
step one, uniformly mixing fibrilia, rock wool fiber and thermoplastic fiber according to the mass ratio of 1:1.5:1.2 to obtain a mixture, opening the mixture through an opener, carding the opened mixture through a carding machine to form a net and carrying out needling processing, so that the fibrilia, the rock wool fiber and the thermoplastic fiber in the mixture are mutually entangled to generate a cloth blank with uniform thickness, winding the cloth blank on a discharging roller I (2) of synthetic leather processing equipment, driving the discharging roller I (2) to rotate and discharge through a discharging motor I (15), enabling the cloth blank to enter an immersion cylinder (6) from an opening (61), starting an adjusting cylinder (27), driving a moving seat (26) to move through the adjusting cylinder (27), driving an adjusting block (23) to be far away from a fixed plate (22) through a push rod (28) by the moving seat (26), the adjusting block (23) extrudes the cloth blank to tension the cloth blank, the aperture in the fiber is enlarged, the painting motor (18) is started, the painting motor (18) drives the painting mechanism (7) to rotate, the painting mechanism (7) drives the cloth blank to move into soaking liquid for soaking, the cloth blank drives the painting roller (25) to rotate while moving, the painting roller (25) paints the soaking liquid on the upper surface of the cloth blank, the soaked cloth blank moves into a first drying oven (8), and the cloth blank is dried to obtain a base cloth layer;
step two, adding a foaming material into a stirrer, uniformly stirring at the temperature of 95-120 ℃ to generate slurry, extruding, vacuum cooling and shaping the slurry, cutting to generate a foaming layer, winding and winding the foaming layer on a discharging roller II (4), starting a discharging motor II (17), driving the discharging roller II (4) to rotate and discharge the foaming layer by the discharging motor II (17), enabling a base cloth layer and the foaming layer to pass through a position between an upper hot pressing roller (11) and a lower hot pressing roller (10), starting a lifting cylinder (12), driving the upper hot pressing roller (11) to lift by the lifting cylinder (12), adjusting the distance between the upper hot pressing roller (11) and the lower hot pressing roller (10), driving the lower hot pressing roller (10) to rotate by a hot pressing motor (19), integrating the base cloth layer and the foaming layer into a whole to obtain a semi-finished synthetic leather product, drying the semi-finished synthetic leather product in a warm oven II (14), and removing the peculiar smell of the semi-finished synthetic leather, obtaining the environment-friendly water-based PU synthetic leather.
2. The process of claim 1, wherein the drying temperature of the first oven 8 is 75-110 ℃, and the drying temperature of the second oven 14 is 140-170 ℃.
3. The environment-friendly water-based PU synthetic leather generation process according to claim 1, wherein the soaking solution is prepared from the following raw materials in parts by mass: 45-50 parts of polyurethane resin, 18-22 parts of water, 2-5 parts of wood powder, 6-8 parts of calcium carbonate and 5-7 parts of water-based color paste.
4. The generation process of the environment-friendly water-based PU synthetic leather according to claim 1, wherein the foaming material is prepared from the following raw materials in parts by mass: 25-30 parts of waterborne polyurethane resin, 15-18 parts of polyethylene, 30-40 parts of acrylic resin, 2-5 parts of polystyrene foaming agent, 7-9 parts of organic silicon leveling agent, 9-12 parts of polyether defoamer, 8-10 parts of waterborne polyurethane thickener and 15-20 parts of water.
5. The environment-friendly water-based PU synthetic leather generation process according to claim 1, wherein the synthetic leather processing equipment comprises a shell (1), both ends of the interior of the shell (1) are respectively rotatably provided with a discharging roller I (2) and a receiving roller (3), one side of the discharging roller I (2) is fixedly provided with a soaking cylinder (6), the bottom of the soaking cylinder (6) is provided with soaking liquid, the inner side of the soaking cylinder (6) is rotatably provided with a painting mechanism (7), both sides of the soaking cylinder (6) are respectively provided with an opening (61), the outer wall of one side of the shell (1) is fixedly provided with a painting motor (18) for driving the painting mechanism (7) to rotate, one side of the soaking cylinder (6) is provided with a first drying oven (8), the first drying oven (8) is fixedly connected with the inner wall of the shell (1), a second discharging roller (4) is arranged above one side of the first drying oven (8), the discharging roller II (4) is rotatably connected with the shell (1), a roller frame (13) is arranged on one side of the discharging roller II (4), the roller frame (13) is movably mounted on the inner side of the shell (1) along the vertical direction, a hot pressing roller (11) is rotatably mounted on the roller frame (13), a lifting cylinder (12) is fixedly mounted at the top of the shell (1), the bottom end of an output rod of the lifting cylinder (12) penetrates through the upper wall of the shell (1) and extends to the inner side of the shell (1), the bottom end of the output rod of the lifting cylinder (12) is fixedly connected with the top of the roller frame (13), a lower hot pressing roller (10) is rotatably mounted under the upper hot pressing roller (11), a hot pressing motor (19) is fixedly mounted on the outer wall of one side of the shell (1), the end part of the output shaft of the hot pressing motor (19) is fixedly connected with one end of the lower hot pressing roller (10), a second oven (14) is arranged on one side of the upper hot pressing roller (11);
the painting mechanism (7) comprises a rotating shaft (21), a plurality of fixing plates (22) are fixedly mounted on the rotating shaft (21), the fixing plates (22) are distributed in an equal radian annular manner, two hinged rods (24) are hinged on the fixing plates (22), the two hinged rods (24) are parallel to each other, one ends, away from the corresponding fixing plates (22), of the two hinged rods (24) are hinged to an adjusting block (23), one side, away from the corresponding fixing plates (22), of the adjusting block (23) is provided with a plurality of mounting grooves, the mounting grooves are distributed at equal intervals, a painting roller (25) is rotatably mounted in each mounting groove, adjusting cylinders (27) are fixedly mounted on the fixing plates (22), moving seats (26) are fixedly mounted at the end parts of output rods of the adjusting cylinders (27), and the moving seats (26) are slidably connected with the corresponding fixing plates (22), the fixed plate (22) is hinged with one end of a push rod (28), and the other end of the push rod (28) is hinged with a corresponding adjusting block (23).
6. An environment-friendly waterborne PU synthetic leather generating process according to claim 5, wherein the upper wall and the lower wall of the two openings (61) are rotatably provided with the supporting wheels (20).
7. The environment-friendly waterborne PU synthetic leather generation technology according to claim 5, wherein one side outer wall of the shell (1) is fixedly provided with a first discharging motor (15) and a first receiving motor (16), the output shaft end of the first discharging motor (15) is fixedly connected with one end of the first discharging roller (2), the output shaft end of the first receiving motor (16) is fixedly connected with one end of the second receiving roller (3), the outer wall of one side of the shell (1) is fixedly provided with a second discharging motor (17), the output shaft end of the second discharging motor (17) is fixedly connected with the second discharging roller (4), and the output shaft end of the coating motor (18) penetrates through the shell (1), the soaking cylinder (6) and is fixedly connected with one end of the rotating shaft (21).
8. The process for generating environment-friendly waterborne PU synthetic leather according to claim 5, wherein the working method of the synthetic leather processing equipment comprises the following steps:
firstly, winding a cloth blank on a discharge roller I (2), driving the discharge roller I (2) to rotate and discharge the cloth blank by a discharge motor I (15), enabling the cloth blank to enter a soaking cylinder (6) from an opening (61), enabling the cloth blank to be positioned below a coating and brushing mechanism (7), starting an adjusting cylinder (27), driving a moving seat (26) to move by the adjusting cylinder (27), driving an adjusting block (23) to be far away from a fixed plate (22) by the moving seat (26) through a push rod (28), extruding the cloth blank by the adjusting block (23), tensioning the cloth blank, enlarging the aperture in fibers, starting a coating and brushing motor (18), driving the coating and brushing mechanism (7) to rotate by the coating and brushing mechanism (7), driving the cloth blank to move into soaking liquid for soaking, driving the coating and brushing roller (25) to rotate while moving, coating and brushing the soaking liquid on the upper surface of the cloth blank by the coating and brushing roller (25), moving the soaked cloth blank into a first oven (8), and drying the cloth blank to obtain a base cloth layer;
and step two, winding and winding the foaming layer on a discharging roller II (4), starting a discharging motor II (17), driving the discharging roller II (4) to rotate and discharge materials by the discharging motor II (17), enabling the base cloth layer and the foaming layer to pass through a position between an upper hot pressing roller (11) and a lower hot pressing roller (10), starting a lifting cylinder (12), driving the upper hot pressing roller (11) to lift by the lifting cylinder (12), adjusting the distance between the upper hot pressing roller (11) and the lower hot pressing roller (10), driving the lower hot pressing roller (10) to rotate by a hot pressing motor (19), integrating the base cloth layer and the foaming layer into a whole to obtain a synthetic leather semi-finished product, drying the synthetic leather semi-finished product in a warm drying oven II (14), and removing the peculiar smell of the synthetic leather semi-finished product to obtain the environment-friendly water-based PU.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113930918A (en) * | 2021-11-26 | 2022-01-14 | 浙江宇康合成革有限公司 | Environment-friendly water-based PU synthetic leather generation process and processing equipment thereof |
| CN114150512A (en) * | 2021-12-20 | 2022-03-08 | 丽水合力新材料有限公司 | Smooth PU waterborne synthetic leather of environmental protection |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109703124A (en) * | 2018-12-24 | 2019-05-03 | 扬州市德运塑业科技股份有限公司 | A kind of synthetic leather and preparation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109703124A (en) * | 2018-12-24 | 2019-05-03 | 扬州市德运塑业科技股份有限公司 | A kind of synthetic leather and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113930918A (en) * | 2021-11-26 | 2022-01-14 | 浙江宇康合成革有限公司 | Environment-friendly water-based PU synthetic leather generation process and processing equipment thereof |
| CN114150512A (en) * | 2021-12-20 | 2022-03-08 | 丽水合力新材料有限公司 | Smooth PU waterborne synthetic leather of environmental protection |
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