CN111423606A - Preparation and processing technology of waterborne polyurethane film - Google Patents
Preparation and processing technology of waterborne polyurethane film Download PDFInfo
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- CN111423606A CN111423606A CN202010279042.9A CN202010279042A CN111423606A CN 111423606 A CN111423606 A CN 111423606A CN 202010279042 A CN202010279042 A CN 202010279042A CN 111423606 A CN111423606 A CN 111423606A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- 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
- B05C1/0813—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 characterised by means for supplying liquid or other fluent material to the roller
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- 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
- B05C1/0821—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 characterised by driving means for rollers or work
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- 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
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
- B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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Abstract
The invention belongs to the technical field of new materials, and particularly relates to a preparation and processing technology of a waterborne polyurethane film, which comprises the following steps: step one, coating waterborne polyurethane: uniformly coating the waterborne polyurethane on a flat substrate; step two, drying into a film sheet: heating and drying the waterborne polyurethane on the substrate to form a thin film with uniform thickness; step three, rolling the polyurethane film: rolling the dried waterborne polyurethane film; and step one, the process of coating the waterborne polyurethane is completed by matching a waterborne polyurethane film preparation processing device. In the process of coating the waterborne polyurethane on the surface of the substrate, the waterborne polyurethane is fed at a constant speed through the material conveying mechanism, the waterborne polyurethane coated on the surface of the substrate is in a continuous and non-overlapped state, the waterborne polyurethane is prevented from being gathered on the surface of the base material, and the waterborne polyurethane can be transversely smoothed, so that the uniformity of the thickness of the dried film is improved.
Description
Technical Field
The invention belongs to the technical field of new materials, and particularly relates to a preparation and processing technology of a waterborne polyurethane film.
Background
Aqueous polyurethanes are new polyurethane systems in which water is used as the dispersion medium instead of an organic solvent, and are also referred to as water-dispersed polyurethanes, aqueous polyurethanes, or water-based polyurethanes. The waterborne polyurethane takes water as a solvent, and has the advantages of no pollution, safety, reliability, excellent mechanical property, good compatibility, easy modification and the like. The waterborne polyurethane is coated and dried to form a film which has air permeability, proper strength and good elasticity, so that the waterborne polyurethane is widely applied to the fields of medical sanitation, garment materials and the like. In the prior art, the following problems exist in the process of coating the waterborne polyurethane on the surface of a substrate in the process of preparing the waterborne polyurethane: (1) when the waterborne polyurethane is longitudinally coated, the coating roller needs to be transversely moved after each coating, and the moving distance of the coating roller is difficult to accurately control in the transverse moving process; if the transverse moving distance is too large, a gap exists between two times of longitudinal coating, so that the waterborne polyurethane on the surface of the base material is discontinuous, and the dried film is discontinuous; if the transverse moving distance is smaller, overlapping exists between two times of longitudinal coating, so that the waterborne polyurethane part on the surface of the base material is overlapped, and the thickness of the dried film is uneven; (2) when the waterborne polyurethane is longitudinally coated, the waterborne polyurethane is converged towards two sides of the coating roller under the pressure of the coating roller, so that the thickness of the waterborne polyurethane on the surface of the base material is uneven, and the thickness of a dried film is uneven; (3) when the coating roller coats the waterborne polyurethane on the surface of the base material, the speed of conveying the waterborne polyurethane to the coating roller is difficult to control to be constant, so that the thickness of the waterborne polyurethane on the surface of the base material is uneven, and the thickness of a dried film is uneven.
Disclosure of Invention
Technical problem to be solved
The invention provides a preparation and processing technology of a waterborne polyurethane film, aiming at solving the following problems in the process of coating waterborne polyurethane on the surface of a substrate in the process of preparing the waterborne polyurethane: (1) when the waterborne polyurethane is longitudinally coated, the coating roller needs to be transversely moved after each coating, and the moving distance of the coating roller is difficult to accurately control in the transverse moving process; if the transverse moving distance is too large, a gap exists between two times of longitudinal coating, so that the waterborne polyurethane on the surface of the base material is discontinuous, and the dried film is discontinuous; if the transverse moving distance is smaller, overlapping exists between two times of longitudinal coating, so that the waterborne polyurethane part on the surface of the base material is overlapped, and the thickness of the dried film is uneven; (2) when the waterborne polyurethane is longitudinally coated, the waterborne polyurethane is converged towards two sides of the coating roller under the pressure of the coating roller, so that the thickness of the waterborne polyurethane on the surface of the base material is uneven, and the thickness of a dried film is uneven; (3) when the coating roller coats the waterborne polyurethane on the surface of the base material, the speed of conveying the waterborne polyurethane to the coating roller is difficult to control to be constant, so that the thickness of the waterborne polyurethane on the surface of the base material is uneven, and the thickness of a dried film is uneven.
(II) technical scheme
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation and processing technology of a waterborne polyurethane film comprises the following steps:
step one, coating waterborne polyurethane: the waterborne polyurethane is uniformly coated on a flat substrate.
Step two, drying into a film sheet: and heating and drying the waterborne polyurethane on the substrate to form a film sheet with uniform thickness.
Step three, rolling the polyurethane film: and rolling the dried waterborne polyurethane film.
The process of coating the waterborne polyurethane in the step one is completed by matching a waterborne polyurethane film preparation and processing device, the waterborne polyurethane film preparation and processing device comprises a base, a base plate is horizontally arranged on the base, and supporting legs are vertically and fixedly arranged below the base. Two bar spouts that are parallel to each other are seted up to the base upper surface, and sliding fit has first slider in the bar spout. The lead screw and the guide rod are horizontally arranged between the two first sliding blocks and are perpendicular to the strip-shaped sliding groove, the lead screw is in running fit with the first sliding blocks, and the guide rod is fixedly connected with the first sliding blocks. And a second sliding block is matched on the guide rod in a sliding manner, and the second sliding block is matched with the lead screw in a rotating manner. A material conveying mechanism is arranged above the second sliding block, and a longitudinal coating mechanism is arranged below the second sliding block. The limiting grooves are vertically formed in the inner side faces of the two first sliding blocks, the mounting blocks are in sliding fit in the limiting grooves, and the horizontal coating roller parallel to the guide rod is horizontally installed between the two mounting blocks in a rotating mode. And a transverse moving mechanism is arranged on the outer side surface of the first sliding block and the upper surface of the base. And conveying the waterborne polyurethane to the longitudinal coating mechanism through the conveying mechanism. The second sliding block and the longitudinal coating mechanism are driven to move along the guide rod by rotating the lead screw, so that the surface of the substrate is longitudinally coated with the waterborne polyurethane. After longitudinal coating is finished every time, the screw is stopped to rotate, the transverse coating roller is driven to be attached to the surface of the substrate by the downward movement of the mounting block in the limiting groove, the first sliding block, the second sliding block and the longitudinal coating mechanism are driven to move transversely for a fixed distance by the transverse moving mechanism, the transverse coating roller transversely screeds the substrate through the waterborne polyurethane after longitudinal coating, and the uniformity of the waterborne polyurethane on the surface thickness of the substrate is improved.
The holding tank has vertically been seted up in the second slider, vertical coating mechanism include with holding tank sliding fit's support, the vertical fixed mounting in support top has first spring. First spring top fixed connection is on the top surface of holding tank. The inner side of the bracket is horizontally and rotatably provided with a longitudinal coating roller with the axis vertical to the guide rod, and the outer surface of the longitudinal coating roller is fixedly sleeved with a sponge cylinder. The outer side of the bracket is fixedly provided with a cylindrical block. The support and the longitudinal coating roller are respectively internally provided with a first material conveying groove and a second material conveying groove which are communicated with each other. First defeated silo intercommunication holding tank. The outlets of the second material conveying grooves are uniformly distributed on the outer surface of the longitudinal coating roller. The inner side surface of the first sliding block is fixedly provided with a wedge-shaped guide block corresponding to the position of the cylindrical block. Be equipped with the oil groove in the first slider, the oil groove intussuseption is filled with hydraulic oil, and oil groove one end slidable mounting has a first piston rod that is on a parallel with the guide bar, the vertical fixed mounting in installation piece top have with oil groove other end sliding fit's second piston rod, second piston rod top fixed connection second spring. And conveying waterborne polyurethane into the first conveying groove and the second conveying groove through the conveying mechanism, wherein the waterborne polyurethane is adsorbed by the sponge cylinder after overflowing from an outlet of the second conveying groove. When the second sliding block and the longitudinal coating mechanism move along the guide rod, the sponge cylinder rolls on the surface of the substrate along with the longitudinal coating roller, and the waterborne polyurethane is coated on the surface of the substrate longitudinally. The second slider pushes the first piston rod after abutting against the first piston rod, the first piston rod extrudes hydraulic oil in the oil groove and pushes the second piston rod downwards, the second piston rod pushes the mounting block to move downwards and stretches the second spring, and therefore the transverse coating roller is attached to the surface of the substrate. And after the second sliding block abuts against the inner side surface of the first sliding block, the screw rod stops rotating, and the first sliding block, the second sliding block and the longitudinal coating mechanism are driven to transversely move through the transverse moving mechanism. And the transverse coating roller is used for transversely smoothing the waterborne polyurethane on the surface of the substrate during the transverse movement of the longitudinal coating roller. The second slider pushes the first piston rod, the wedge-shaped guide block abuts against the surface of the cylindrical block, and the cylindrical block, the support, the longitudinal coating roller and the sponge cylinder are pushed to integrally move upwards, so that the sponge cylinder is separated from the surface of the substrate. In the transverse moving process of the longitudinal coating roller, the sponge cylinder is not in contact with the substrate, so that the condition that the thickness uniformity of the waterborne polyurethane is damaged due to sliding friction between the sponge cylinder and the substrate in the transverse moving process is avoided.
According to a preferable technical scheme of the invention, the material conveying mechanism comprises a mounting frame fixedly mounted on the upper surface of the second sliding block, a material storage barrel with an outlet at the bottom is fixedly mounted on the mounting frame, a material inlet is formed in the side surface of the material storage barrel, a material conveying pipe is fixedly connected to the outlet of the material storage barrel, the bottom end of the material conveying pipe is communicated with a third material conveying groove located in the second sliding block, and the third material conveying groove is communicated with the accommodating groove. The storage barrel is internally provided with a screw rod in a rotating way, and the top surface of the screw rod is fixedly connected with a gear column coaxial with the screw rod. A first reciprocating motor is fixedly mounted on the mounting frame, and a gear meshed with the gear column is fixedly mounted at the output end of the first reciprocating motor. The bottom surface of the screw is rotatably connected with a rigid straight rod coaxial with the screw, and the bottom of the rigid straight rod is fixedly provided with a rubber plug matched with the outlet of the storage barrel. And water-injected polyurethane is added into the cavity in the storage barrel through the feeding hole. In the longitudinal movement process of the longitudinal coating mechanism, the gear is driven to rotate in the forward direction through the first reciprocating motor, so that the gear column is driven to rotate in the forward direction, the gear column drives the screw rod to rotate upwards in the rotation process, the rigid straight rod and the rubber plug are driven to move upwards, the outlet at the bottom of the storage barrel is opened, and the waterborne polyurethane flows out of the outlet to the conveying pipe, flows into the containing tank through the third conveying chute and then flows into the first conveying chute. After the longitudinal coating mechanism stops longitudinal movement, the gear is driven to rotate reversely through the first reciprocating motor, so that the gear column is driven to rotate reversely, the screw rod is driven to rotate downwards in the rotation process of the gear column, the rigid straight rod and the rubber plug are driven to move downwards, the outlet at the bottom of the storage barrel is sealed, the waterborne polyurethane does not flow out from the outlet, and the feeding mechanism stops feeding.
As a preferred technical scheme of the invention, a sealing cylinder is fixedly arranged on the top surface of the inner cavity of the storage barrel, the bottom of the sealing cylinder is open, and a through groove is formed in the side wall of the sealing cylinder. A first sealing plate in sliding fit with the inner side wall of the storage barrel cavity and the outer side wall of the sealing barrel is fixedly mounted on the rigid straight rod. The area located above the first sealing plate in the storage vat internal cavity is filled with hydraulic oil. A sliding rod is arranged in the sealing cylinder in a sliding mode, and a second sealing plate in sliding fit with the inner side wall of the storage barrel cavity and the outer side wall of the rigid straight rod is fixedly arranged at the bottom of the sliding rod. When first reciprocating motor forward displacement, the ascending in-process of rigidity straight-bar drives first closing plate and shifts up, and first closing plate pushes hydraulic oil into a sealed section of thick bamboo through leading to the groove, and hydraulic oil promotes slide bar and second closing plate and moves down, and the second closing plate extrudes waterborne polyurethane out the storage vat. In the discharging process, the downward moving speed of the second sealing plate can be ensured to be constant only by ensuring the constant rotating speed of the first reciprocating motor, so that the constant discharging speed of the waterborne polyurethane is ensured. When first reciprocating motor reverse movement, rigidity straight-bar decline in-process drives first closing plate and moves down, and hydraulic oil is taken out from sealed section of thick bamboo, and slide bar and second closing plate receive the atmospheric pressure effect to shift up, and waterborne polyurethane receives the atmospheric pressure effect and assembles to storage vat inside to avoided the rubber buffer to close the condition emergence of export in-process waterborne polyurethane automatic outflow, improved the homogeneity of defeated material mechanism feed.
As a preferable technical scheme of the invention, the transverse moving mechanism comprises a second reciprocating motor fixedly arranged on the outer side surface of the first sliding block, an output shaft of the second reciprocating motor is parallel to the guide rod, a connecting rod along the radial direction of the output shaft of the second reciprocating motor is fixedly arranged at the end part of the output shaft of the second reciprocating motor, and a deflector rod is fixedly arranged at the outer end of the connecting rod. The vertical fixed mounting of base upper surface has the deflector that is on a parallel with the bar spout, evenly sets up the vertical guide way of mutually supporting with the driving lever on the deflector. The distance between the adjacent guide grooves is equal to the length of the sponge cylinder. The connecting rod and the shifting rod are driven to rotate by the second reciprocating motor, the shifting rod and the guide groove slide relatively in the rotating process, transverse pressure is applied to the guide plate, and the transverse moving mechanism, the first sliding block, the second sliding block and the longitudinal coating mechanism are pushed to move transversely by the reacting force of the guide plate. Because the guide grooves are uniformly formed in the guide plate, and the distance between every two adjacent guide grooves is equal to the length of the sponge cylinder, the distance of each transverse movement of the longitudinal coating mechanism is equal to the length of the sponge cylinder, and the waterborne polyurethane on the surface of the substrate is ensured to be in a continuous and non-overlapped state.
As a preferred technical scheme of the invention, a first limiting block is fixedly arranged between two adjacent guide grooves on the guide plate, and the top surface of the first limiting block is in a semi-circular arc shape. A semicircular second limiting block matched with the top surface of the first limiting block is fixedly arranged at the joint of the connecting rod and the output shaft of the second reciprocating motor. After the deflector rod is separated from the guide groove, the first sliding block, the second sliding block and the longitudinal coating mechanism do not generate transverse positions any more, and the first limiting block and the second limiting block enter a matching state to ensure that the first sliding block, the second sliding block and the longitudinal coating mechanism are in a static state, so that the situation that the longitudinal coating mechanism generates transverse displacement in the longitudinal coating process is avoided.
As a preferred technical scheme of the invention, a third reciprocating motor is fixedly arranged on the outer side surface of the first sliding block, and the output end of the third reciprocating motor is fixedly connected with a screw rod. The screw rod is driven to rotate forwards and backwards through a third reciprocating motor.
According to a preferable technical scheme of the invention, annular material storage grooves are formed in two sides of the sponge cylinder, a fourth material conveying groove communicated with the material storage grooves and the second material conveying groove is formed in the sponge cylinder, and a one-way valve opened towards the second material conveying groove is formed in the fourth material conveying groove. When the sponge cylinder rolls on the surface of the substrate, the waterborne polyurethane is gathered to two sides under the pressure of the sponge cylinder and enters the storage tank, and flows into the second material conveying tank again after passing through the fourth material conveying tank and the one-way valve, so that the gathering of the waterborne polyurethane is avoided, and the thickness uniformity of the waterborne polyurethane is improved.
As a preferable technical scheme of the invention, the base plate is in horizontal sliding fit with the base, and a third spring is fixedly arranged between the side edge of the base plate and the base. The base plate bottom surface level fixed mounting has the rack, and fixed mounting has the rotating electrical machines on the base, and the output shaft fixed mounting of rotating electrical machines has the incomplete gear of mutually supporting with the rack. After the waterborne polyurethane is coated on the surface of the substrate, the rotating motor drives the incomplete gear to rotate at a high speed, the incomplete gear and the rack are periodically meshed and separated, the substrate is driven to periodically compress the third spring and generate high-frequency collision with the base, and the substrate generates high-frequency vibration, so that the waterborne polyurethane on the surface of the substrate is homogenized.
(III) advantageous effects
The invention has at least the following beneficial effects:
(1) according to the invention, in the process of coating the waterborne polyurethane on the surface of the substrate, the transverse moving mechanism is used for transversely moving the longitudinal coating roller, so that the distance of each transverse movement of the longitudinal coating roller is equal, and the distance of each transverse movement is the same as the coating width of each transverse movement of the longitudinal coating roller, thereby ensuring that the waterborne polyurethane on the surface of the substrate is in a continuous and non-overlapping state, and further improving the uniformity of the thickness of the dried film.
(2) In the invention, in the process of longitudinally coating the surface of the substrate by the longitudinal coating roller, the waterborne polyurethane is gathered in the storage tanks at two sides after receiving the pressure of the coating roller and returns to the second material conveying tank after passing through the fourth material conveying tank, so that the waterborne polyurethane is prevented from gathering on the surface of the base material, and the thickness uniformity of the waterborne polyurethane is improved.
(3) After longitudinal coating is finished each time, the sponge cylinder ascends to separate from the surface of the substrate before the longitudinal coating roller transversely moves, and meanwhile, the transverse coating roller descends to be attached to the surface of the substrate; in the process of transverse movement of the longitudinal coating roller, the transverse coating roller can transversely trowel the waterborne polyurethane on the surface of the substrate, so that the thickness uniformity of the waterborne polyurethane is further improved.
(4) In the invention, the uniform-speed material conveying is carried out on the longitudinal coating roller by the material conveying mechanism, so that the quantity of the waterborne polyurethane in the sponge cylinder is always kept constant, and the uniform thickness of the waterborne polyurethane on the surface of the base material is ensured; when the feeding mechanism stops feeding, the waterborne polyurethane at the outlet of the storage vat is subjected to the air pressure effect and is gathered towards the inside of the storage vat, so that the condition that the feeding is uneven due to the free flow of the waterborne polyurethane is avoided, and the uniformity of the feeding is further ensured.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the steps of a process for preparing an aqueous polyurethane film according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a first three-dimensional structure of an apparatus for preparing and processing a water-based polyurethane film according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a second three-dimensional structure of an apparatus for preparing and processing a water-based polyurethane film according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a third perspective structure of an apparatus for preparing and processing an aqueous polyurethane film according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of a part A of a processing apparatus for preparing an aqueous polyurethane film according to an embodiment of the present invention;
FIG. 6 is an enlarged schematic view of a position B of a processing apparatus for preparing an aqueous polyurethane film according to an embodiment of the present invention;
FIG. 7 is an enlarged schematic view of an apparatus C for preparing and processing an aqueous polyurethane film according to an embodiment of the present invention;
FIG. 8 is an enlarged schematic view of a device D for preparing and processing an aqueous polyurethane film according to an embodiment of the present invention
FIG. 9 is a schematic diagram showing the internal structure of a longitudinal coating roller of the apparatus for preparing and processing an aqueous polyurethane film according to the embodiment of the present invention;
FIG. 10 is a schematic view of the internal structure of the first slider of the apparatus for preparing and processing a water-based polyurethane film according to the embodiment of the present invention;
FIG. 11 is a schematic diagram of the internal structure of a second slider of the apparatus for preparing and processing an aqueous polyurethane film according to the embodiment of the present invention;
FIG. 12 is a schematic view of the internal structure of a storage vat of the apparatus for preparing and processing a water-based polyurethane film according to the embodiment of the present invention;
FIG. 13 is a top view of an apparatus for preparing and processing an aqueous polyurethane film in an embodiment of the present invention.
In the figure: 1-base, 2-base plate, 3-strip chute, 4-first slide block, 5-lead screw, 6-guide rod, 7-second slide block, 8-material conveying mechanism, 81-mounting frame, 82-material storage barrel, 83-material conveying pipe, 84-screw, 85-gear column, 86-first reciprocating motor, 87-gear, 88-rigid straight rod, 89-rubber plug, 810-sealing barrel, 811-first sealing plate, 812-sliding rod, 813-second sealing plate, 9-longitudinal coating mechanism, 91-bracket, 92-longitudinal coating roller, 93-sponge barrel, 931-material storage tank, 932-fourth material conveying tank, 933-one-way valve, 94-cylindrical block, 95-first material conveying tank, 96-second material conveying tank, 10-a limiting groove, 11-a mounting block, 12-a transverse coating roller, 13-a transverse moving mechanism, 131-a second reciprocating motor, 132-a connecting rod, 133-a deflector rod, 134-a guide plate, 135-a guide groove, 136-a first limiting block, 137-a second limiting block, 14-a containing groove, 15-a first spring, 16-a wedge-shaped guide block, 17-an oil groove, 18-a first piston rod, 19-a second piston rod, 20-a second spring, 21-a third feed delivery groove, 22-a third reciprocating motor, 23-a third spring, 24-a rack, 25-a rotating motor and 26-an incomplete gear.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1, this embodiment provides a preparation and processing process of an aqueous polyurethane film, including the following steps:
step one, coating waterborne polyurethane: the waterborne polyurethane is uniformly coated on a flat substrate.
Step two, drying into a film sheet: and heating and drying the waterborne polyurethane on the substrate to form a film sheet with uniform thickness.
Step three, rolling the polyurethane film: and rolling the dried waterborne polyurethane film.
The process of coating the waterborne polyurethane in the step one is completed by matching a waterborne polyurethane film preparation and processing device shown in figures 2 to 13, the waterborne polyurethane film preparation and processing device comprises a base 1, a substrate 2 is horizontally arranged on the base 1, and supporting legs are vertically and fixedly arranged below the base 1. Base plate 2 and base 1 horizontal sliding fit, fixed mounting has third spring 23 between the side of base plate 2 and the base 1. A rack 24 is horizontally and fixedly arranged on the bottom surface of the base plate 2, a rotating motor 25 is fixedly arranged on the base 1, and an incomplete gear 26 matched with the rack 24 is fixedly arranged on an output shaft of the rotating motor 25. Two bar spouts 3 that are parallel to each other are seted up to base 1 upper surface, and bar spout 3 sliding fit has first slider 4. A lead screw 5 and a guide rod 6 which are perpendicular to the strip-shaped sliding groove 3 are horizontally arranged between the two first sliding blocks 4, the lead screw 5 is in running fit with the first sliding blocks 4, and the guide rod 6 is fixedly connected with the first sliding blocks 4. A third reciprocating motor 22 is fixedly arranged on the outer side surface of the first sliding block 4, and the output end of the third reciprocating motor 22 is fixedly connected with a screw rod 5. The third reciprocating motor 22 drives the screw rod 5 to rotate positively and negatively. The guide rod 6 is matched with a second sliding block 7 in a sliding mode, and the second sliding block 7 is matched with the lead screw 5 in a rotating mode. A material conveying mechanism 8 is arranged above the second sliding block 7, and a longitudinal coating mechanism 9 is arranged below the second sliding block. The limiting grooves 10 are vertically formed in the inner side faces of the two first sliding blocks 4, the mounting blocks 11 are matched with the inner side faces of the limiting grooves 10 in a sliding mode, and the transverse coating roller 12 parallel to the guide rod 6 is horizontally installed between the two mounting blocks 11 in a rotating mode. And a transverse moving mechanism 13 is arranged on the outer side surface of the first sliding block 4 and the upper surface of the base 1. The waterborne polyurethane is conveyed to a longitudinal coating mechanism 9 through a material conveying mechanism 8. The second slide block 7 and the longitudinal coating mechanism 9 are driven to move along the guide rod 6 by rotating the lead screw 5, so that the surface of the substrate 2 is longitudinally coated with the waterborne polyurethane. After longitudinal coating is finished every time, the screw 5 stops rotating, the mounting block 11 moves downwards in the limiting groove 10 to drive the transverse coating roller 12 to be attached to the surface of the substrate 2, the transverse moving mechanism 13 drives the first sliding block 4, the second sliding block 7 and the longitudinal coating mechanism 9 to move transversely for a fixed distance, and the transverse coating roller 12 transversely screeds the waterborne polyurethane of the substrate 2 after longitudinal coating, so that the uniformity of the waterborne polyurethane on the surface thickness of the substrate 2 is improved. After the waterborne polyurethane is coated on the surface of the substrate 2, the rotating motor 25 drives the incomplete gear 26 to rotate at a high speed, the incomplete gear 26 and the rack 24 are periodically meshed and separated, the substrate 2 is driven to periodically compress the third spring 23 and generate high-frequency collision with the base 1, and the substrate 2 generates high-frequency vibration, so that the waterborne polyurethane on the surface of the substrate 2 is homogenized.
Accommodating groove 14 has vertically been seted up in the second slider 7, and vertical coating mechanism 9 includes with accommodating groove 14 sliding fit's support 91, the vertical fixed mounting in support 91 top has first spring 15. First spring 15 is fixedly attached at its top to the top surface of receiving groove 14. A longitudinal coating roller 92 with the axis vertical to the guide rod 6 is horizontally and rotatably arranged on the inner side of the bracket 91, and a sponge cylinder 93 is fixedly sleeved on the outer surface of the longitudinal coating roller 92. The outer side of the bracket 91 is fixedly provided with a cylindrical block 94. The support 91 and the longitudinal coating roller 92 are provided with a first feeding chute 95 and a second feeding chute 96 which are communicated with each other. The first transporting chute 95 is connected to the accommodating groove 14. The outlets of the second hopper 96 are uniformly distributed on the outer surface of the longitudinal coating roller 92. The inner side surface of the first sliding block 4 is fixedly provided with a wedge-shaped guide block 16 corresponding to the cylindrical block 94. Be equipped with oil groove 17 in the first slider 4, oil groove 17 intussuseption is filled with hydraulic oil, and oil groove 17 one end slidable mounting has a first piston rod 18 that is on a parallel with guide bar 6, and the vertical fixed mounting in installation piece 11 top has with oil groove 17 other end sliding fit's second piston rod 19, second piston rod 19 top fixed connection second spring 20. The waterborne polyurethane is conveyed into the first conveying groove 95 and the second conveying groove 96 through the conveying mechanism 8, and the waterborne polyurethane overflows from the outlet of the second conveying groove 96 and is adsorbed by the sponge cylinder 93. When the second slider 7 and the longitudinal coating mechanism 9 move along the guide bar 6, the sponge cylinder 93 rolls on the surface of the substrate 2 along with the longitudinal coating roller 92, and the aqueous polyurethane is longitudinally coated on the surface of the substrate 2. The second sliding block 7 pushes the first piston rod 18 after abutting against the first piston rod 18, the first piston rod 18 extrudes hydraulic oil in the oil groove 17 and pushes the second piston rod 19 downwards, the second piston rod 19 pushes the mounting block 11 to move downwards and stretches the second spring 20, and therefore the transverse coating roller 12 is attached to the surface of the substrate 2. After the second sliding block 7 is abutted to the inner side surface of the first sliding block 4, the screw 5 stops rotating, and the first sliding block 4, the second sliding block 7 and the longitudinal coating mechanism 9 are driven to transversely move through the transverse moving mechanism 13. The transverse coating roller 12 transversely screeds the aqueous polyurethane on the surface of the substrate 2 during the transverse movement of the longitudinal coating roller 92. During the process that the second slide block 7 pushes the first piston rod 18, the wedge-shaped guide block 16 abuts against the surface of the cylindrical block 94 and pushes the cylindrical block 94, the bracket 91, the longitudinal coating roller 92 and the sponge cylinder 93 to move integrally upward, so that the sponge cylinder 93 is separated from the surface of the substrate 2. In the transverse moving process of the longitudinal coating roller 92, the sponge cylinder 93 is not in contact with the substrate 2, so that the condition that the thickness uniformity of the waterborne polyurethane is damaged due to sliding friction between the sponge cylinder 93 and the substrate 2 in the transverse moving process is avoided. Annular storage chute 931 is seted up to sponge cylinder 93 both sides, has seted up fourth defeated silo 932 of intercommunication storage chute 931 and second defeated silo 96 in the sponge cylinder 93, sets up the check valve 933 that opens to second defeated silo 96 in the fourth defeated silo 932. When the sponge cylinder 93 rolls on the surface of the substrate 2, the waterborne polyurethane is converged to two sides under the pressure of the sponge cylinder 93 and enters the storage groove 931, and flows into the second material conveying groove 96 again after passing through the fourth material conveying groove 932 and the one-way valve 933, so that the convergence of the waterborne polyurethane is avoided.
In this embodiment, the feeding mechanism 8 includes a mounting bracket 81 fixedly mounted on the upper surface of the second slider 7, a storage bin 82 with an outlet opened at the bottom is fixedly mounted on the mounting bracket 81, a feeding port is opened on the side surface of the storage bin 82, a feeding pipe 83 is fixedly connected to the outlet of the storage bin 82, the bottom end of the feeding pipe 83 is communicated with a third feeding chute 21 located in the second slider 7, and the third feeding chute 21 is communicated with the accommodating groove 14. The storage barrel 82 is rotatably provided with a screw 84, and the top surface of the screw 84 is fixedly connected with a gear column 85 coaxial with the screw. A first reciprocating motor 86 is fixedly mounted on the mounting bracket 81, and a gear 87 meshed with the gear column 85 is fixedly mounted at the output end of the first reciprocating motor 86. The bottom surface of the screw 84 is rotatably connected with a rigid straight rod 88 coaxial with the screw, and the bottom of the rigid straight rod 88 is fixedly provided with a rubber plug 89 matched with the outlet of the storage barrel 82. And water-injected polyurethane is added into the cavity in the storage bucket 82 through the feeding hole. In the longitudinal movement process of the longitudinal coating mechanism 9, the first reciprocating motor 86 drives the gear 87 to rotate in the forward direction, so as to drive the gear post 85 to rotate in the forward direction, the gear post 85 drives the screw 84 to rotate upwards in the rotation process, so as to drive the rigid straight rod 88 and the rubber plug 89 to move upwards, the outlet at the bottom of the storage barrel 82 is opened, and the waterborne polyurethane flows out of the outlet to the material conveying pipe 83, flows into the accommodating groove 14 through the third material conveying groove 21 and then flows into the first material conveying groove 95. After the longitudinal coating mechanism 9 stops longitudinal movement, the first reciprocating motor 86 drives the gear 87 to rotate reversely, so as to drive the gear post 85 to rotate reversely, the gear post 85 drives the screw rod 84 to rotate downwards in the rotating process, so as to drive the rigid straight rod 88 and the rubber plug 89 to move downwards, the outlet at the bottom of the storage barrel 82 is sealed, the waterborne polyurethane does not flow out from the outlet, and the material conveying mechanism 8 stops feeding. The top surface of the inner cavity of the storage bucket 82 is fixedly provided with a sealing cylinder 810, the bottom of the sealing cylinder 810 is opened, and the side wall of the sealing cylinder is provided with a through groove. The rigid straight rod 88 is fixedly provided with a first sealing plate 811 which is in sliding fit with the inner side wall of the cavity of the storage vat 82 and the outer side wall of the sealing cylinder 810. The region of the interior cavity of the storage vat 82 above the first seal plate 811 is filled with hydraulic oil. A sliding rod 812 is arranged in the sealing cylinder 810 in a sliding mode, and a second sealing plate 813 in sliding fit with the inner side wall of the cavity of the storage bucket 82 and the outer side wall of the rigid straight rod 88 is fixedly arranged at the bottom of the sliding rod 812. When the first reciprocating motor 86 moves forwards, the rigid straight rod 88 drives the first sealing plate 811 to move upwards in the ascending process, the first sealing plate 811 presses hydraulic oil into the sealing cylinder 810 through the through groove, the sliding rod 812 and the second sealing plate 813 are pushed to move downwards by the hydraulic oil, and the second sealing plate 813 presses the waterborne polyurethane out of the storage barrel 82. In the discharging process, the constant downward moving speed of the second sealing plate 813 can be ensured only by ensuring the constant rotating speed of the first reciprocating motor 86, so that the constant discharging speed of the waterborne polyurethane is ensured. When first reciprocating motor 86 reverse movement, rigidity straight-bar 88 descends the in-process and drives first closing plate 811 and move down, and hydraulic oil is taken out from sealed cylinder 810, and slide bar 812 and second closing plate 813 receive the atmospheric pressure effect to shift up, and waterborne polyurethane receives the atmospheric pressure effect and assembles to storage vat 82 is inside to avoided rubber buffer 89 to close the condition emergence of export in-process waterborne polyurethane automatic outflow, improved the homogeneity of defeated material mechanism 8 supplies.
In this embodiment, the transverse moving mechanism 13 includes a second reciprocating motor 131 fixedly mounted on the outer side surface of the first sliding block 4, an output shaft of the second reciprocating motor 131 is parallel to the guide rod 6, a connecting rod 132 along the radial direction of the output shaft of the second reciprocating motor 131 is fixedly mounted at the end of the output shaft, and a shift lever 133 is fixedly mounted at the outer end of the connecting rod 132. The upper surface of the base 1 is vertically and fixedly provided with a guide plate 134 parallel to the strip-shaped chute 3, and the guide plate 134 is evenly provided with a vertical guide groove 135 matched with the shift lever 133. The distance between the adjacent guide grooves 135 is equal to the length of the sponge cylinder 93. The second reciprocating motor 131 drives the connecting rod 132 and the shifting lever 133 to rotate, the shifting lever 133 slides relative to the guide groove 135 during rotation, and applies transverse pressure to the guide plate 134, and the transverse moving mechanism 13, the first slide block 4, the second slide block 7 and the longitudinal coating mechanism 9 are pushed to move transversely by the reaction force of the guide plate 134. Since the guide grooves 135 are uniformly formed on the guide plate 134 and the distance between adjacent guide grooves 135 is equal to the length of the sponge cylinder 93, the distance of each transverse movement of the longitudinal coating mechanism 9 is equal to the length of the sponge cylinder 93, thereby ensuring that the aqueous polyurethane on the surface of the substrate 2 is in a continuous and non-overlapped state. A first limiting block 136 is fixedly installed between two adjacent guide grooves 135 on the guide plate 134, and the top surface of the first limiting block 136 is in a semi-circular arc shape. A semicircular second limit block 137 matched with the top surface of the first limit block 136 is fixedly arranged at the joint of the connecting rod 132 and the output shaft of the second reciprocating motor 131. After the shift lever 133 is separated from the guide groove 135, the first slider 4, the second slider 7 and the longitudinal coating mechanism 9 do not generate a transverse position any more, and the first limiting block 136 and the second limiting block 137 enter a matching state, so that the first slider 4, the second slider 7 and the longitudinal coating mechanism 9 are ensured to be in a static state, and the situation that the longitudinal coating mechanism 9 generates a transverse displacement in a longitudinal coating process is avoided.
The working process of coating the waterborne polyurethane in the first step of the embodiment is as follows: and water-injected polyurethane is added into the cavity in the storage bucket 82 through the feeding hole. The third reciprocating motor 22 drives the lead screw 5 to rotate in the forward direction, so that the second sliding block 7 and the longitudinal coating mechanism 9 are driven to move along the guide rod 6, and the longitudinal coating mechanism 9 longitudinally coats the surface of the substrate 2 with the waterborne polyurethane. After longitudinal coating is finished each time, in the process that the second sliding block 7 is abutted to the first sliding block 4, the second sliding block 7 pushes the first piston rod 18 to drive the transverse coating roller 12 to move downwards and attach to the surface of the substrate 2; at the same time, the wedge guide 16 abuts against the surface of the cylindrical block 94 and pushes the cylindrical block 94, the holder 91, the longitudinal coating roller 92 and the sponge cylinder 93 to move integrally upward, thereby separating the sponge cylinder 93 from the surface of the substrate 2. Then the third reciprocating motor 22 stops rotating, the transverse moving mechanism 13 drives the first sliding block 4, the second sliding block 7 and the longitudinal coating mechanism 9 to transversely move for a fixed distance, and the transverse coating roller 12 transversely screeds the waterborne polyurethane coated longitudinally on the substrate 2. After the longitudinal coating mechanism 9 is transversely moved, the third reciprocating motor 22 drives the lead screw 5 to reversely rotate, so as to drive the second slide block 7 and the longitudinal coating mechanism 9 to reversely move along the guide rod 6. In the process of separating the second slide block 7 from the first slide block 4, the mounting block 11 rises to the initial height under the action of the elastic force of the second spring 20 and drives the transverse coating roller 12 to move upwards to separate from the substrate 2; meanwhile, the support 91, the longitudinal coating roller 92 and the sponge cylinder 93 are pushed to move downwards by the elastic force of the first spring 15, the sponge cylinder 93 is attached to the surface of the substrate 2 again, and the surface of the substrate 2 is coated longitudinally. After the waterborne polyurethane is coated on the surface of the substrate 2, the rotating motor 25 drives the incomplete gear 26 to rotate at a high speed, the incomplete gear 26 and the rack 24 are periodically meshed and separated, the substrate 2 is driven to periodically compress the third spring 23 and generate high-frequency collision with the base 1, and the substrate 2 generates high-frequency vibration, so that the waterborne polyurethane on the surface of the substrate 2 is homogenized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A preparation and processing technology of a waterborne polyurethane film is characterized by comprising the following steps: the processing technology comprises the following steps:
step one, coating waterborne polyurethane: uniformly coating the waterborne polyurethane on a flat substrate;
step two, drying into a film sheet: heating and drying the waterborne polyurethane on the substrate to form a thin film with uniform thickness;
step three, rolling the polyurethane film: rolling the dried waterborne polyurethane film;
the process of coating the waterborne polyurethane in the step one is completed by matching a waterborne polyurethane film preparation and processing device, the waterborne polyurethane film preparation and processing device comprises a base (1), a substrate (2) is horizontally arranged on the base (1), and supporting legs are vertically and fixedly arranged below the base (1); the upper surface of the base (1) is provided with two mutually parallel strip-shaped sliding chutes (3), and the strip-shaped sliding chutes (3) are in sliding fit with first sliding blocks (4); a lead screw (5) and a guide rod (6) which are perpendicular to the strip-shaped sliding groove (3) are horizontally arranged between the two first sliding blocks (4), the lead screw (5) is in running fit with the first sliding blocks (4), and the guide rod (6) is fixedly connected with the first sliding blocks (4); a second sliding block (7) is matched on the guide rod (6) in a sliding way, and the second sliding block (7) is matched with the lead screw (5) in a rotating way; a material conveying mechanism (8) is arranged above the second sliding block (7), and a longitudinal coating mechanism (9) is arranged below the second sliding block; limiting grooves (10) are vertically formed in the inner side surfaces of the two first sliding blocks (4), mounting blocks (11) are matched in the limiting grooves (10) in a sliding mode, and a transverse coating roller (12) parallel to the guide rod (6) is horizontally and rotatably mounted between the two mounting blocks (11); a transverse moving mechanism (13) is arranged on the outer side surface of the first sliding block (4) and the upper surface of the base (1);
an accommodating groove (14) is vertically formed in the second slider (7), the longitudinal coating mechanism (9) comprises a support (91) in sliding fit with the accommodating groove (14), and a first spring (15) is vertically and fixedly mounted at the top of the support (91); the top of the first spring (15) is fixedly connected to the top surface of the accommodating groove (14); a longitudinal coating roller (92) with the axis vertical to the guide rod (6) is horizontally and rotatably arranged on the inner side of the support (91), and a sponge cylinder (93) is fixedly sleeved on the outer surface of the longitudinal coating roller (92); a cylindrical block (94) is fixedly arranged on the outer side of the bracket (91); a first material conveying groove (95) and a second material conveying groove (96) which are communicated with each other are respectively formed in the support (91) and the longitudinal coating roller (92); the first material conveying groove (95) is communicated with the accommodating groove (14); outlets of the second material conveying grooves (96) are uniformly distributed on the outer surface of the longitudinal coating roller (92); a wedge-shaped guide block (16) corresponding to the cylindrical block (94) is fixedly arranged on the inner side surface of the first sliding block (4); be equipped with oil groove (17) in first slider (4), oil groove (17) one end slidable mounting has first piston rod (18) that is on a parallel with guide bar (6), the vertical fixed mounting in installation piece (11) top have with oil groove (17) other end sliding fit's second piston rod (19), second piston rod (19) top fixed connection second spring (20).
2. The preparation and processing technology of the waterborne polyurethane film as claimed in claim 1, wherein the preparation and processing technology comprises the following steps: the material conveying mechanism (8) comprises a mounting frame (81) fixedly mounted on the upper surface of the second sliding block (7), a material storage barrel (82) with an outlet formed in the bottom is fixedly mounted on the mounting frame (81), a material inlet is formed in the side surface of the material storage barrel (82), a material conveying pipe (83) is fixedly connected to the outlet of the material storage barrel (82), the bottom end of the material conveying pipe (83) is communicated with a third material conveying groove (21) in the second sliding block (7), and the third material conveying groove (21) is communicated with the accommodating groove (14); a screw rod (84) is rotatably arranged in the storage barrel (82), and the top surface of the screw rod (84) is fixedly connected with a gear column (85) coaxial with the screw rod; a first reciprocating motor (86) is fixedly arranged on the mounting rack (81), and a gear (87) meshed with the gear column (85) is fixedly arranged at the output end of the first reciprocating motor (86); the bottom surface of the screw rod (84) is rotationally connected with a rigid straight rod (88) coaxial with the screw rod, and the bottom of the rigid straight rod (88) is fixedly provided with a rubber plug (89) matched with the outlet of the storage barrel (82).
3. The preparation and processing technology of the waterborne polyurethane film as claimed in claim 2, wherein the preparation and processing technology comprises the following steps: a sealing cylinder (810) is fixedly mounted on the top surface of the inner cavity of the storage barrel (82), the bottom of the sealing cylinder (810) is open, and a through groove is formed in the side wall of the sealing cylinder; a first sealing plate (811) which is in sliding fit with the inner side wall of the cavity of the storage barrel (82) and the outer side wall of the sealing barrel (810) is fixedly arranged on the rigid straight rod (88); a sliding rod (812) is arranged in the sealing barrel (810) in a sliding mode, and a second sealing plate (813) in sliding fit with the inner side wall of the cavity of the storage barrel (82) and the outer side wall of the rigid straight rod (88) is fixedly arranged at the bottom of the sliding rod (812).
4. The preparation and processing technology of the waterborne polyurethane film as claimed in claim 1, wherein the preparation and processing technology comprises the following steps: the transverse moving mechanism (13) comprises a second reciprocating motor (131) fixedly mounted on the outer side surface of the first sliding block (4), an output shaft of the second reciprocating motor (131) is parallel to the guide rod (6), a connecting rod (132) is fixedly mounted at the end part of the output shaft of the second reciprocating motor (131) along the radial direction of the output shaft, and a deflector rod (133) is fixedly mounted at the outer end of the connecting rod (132); a guide plate (134) parallel to the strip-shaped sliding groove (3) is vertically and fixedly installed on the upper surface of the base (1), and vertical guide grooves (135) matched with the shift lever (133) are uniformly formed in the guide plate (134); the distance between adjacent guide grooves (135) is equal to the length of the sponge cylinder (93).
5. The preparation and processing technology of the waterborne polyurethane film as claimed in claim 4, wherein the preparation and processing technology comprises the following steps: a first limiting block (136) is fixedly arranged between two adjacent guide grooves (135) on the guide plate (134), and the top surface of the first limiting block (136) is in a semi-circular arc shape; a semicircular second limiting block (137) matched with the top surface of the first limiting block (136) is fixedly arranged at the joint of the connecting rod (132) and the output shaft of the second reciprocating motor (131).
6. The preparation and processing technology of the waterborne polyurethane film as claimed in claim 1, wherein the preparation and processing technology comprises the following steps: a third reciprocating motor (22) is fixedly mounted on the outer side face of the first sliding block (4), and the output end of the third reciprocating motor (22) is fixedly connected with a lead screw (5).
7. The preparation and processing technology of the waterborne polyurethane film as claimed in claim 1, wherein the preparation and processing technology comprises the following steps: annular stock chest (931) have been seted up to sponge cylinder (93) both sides, have seted up fourth defeated silo (932) of intercommunication stock chest (931) and second defeated silo (96) in sponge cylinder (93), offer in fourth defeated silo (932) one-way valve (933) that open to second defeated silo (96).
8. The preparation and processing technology of the waterborne polyurethane film as claimed in claim 1, wherein the preparation and processing technology comprises the following steps: the base plate (2) is in horizontal sliding fit with the base (1), and a third spring (23) is fixedly arranged between the side edge of the base plate (2) and the base (1); a rack (24) is horizontally and fixedly installed on the bottom surface of the base plate (2), a rotating motor (25) is fixedly installed on the base (1), and an incomplete gear (26) matched with the rack (24) is fixedly installed on an output shaft of the rotating motor (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010279042.9A CN111423606A (en) | 2020-04-10 | 2020-04-10 | Preparation and processing technology of waterborne polyurethane film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010279042.9A CN111423606A (en) | 2020-04-10 | 2020-04-10 | Preparation and processing technology of waterborne polyurethane film |
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| CN111423606A true CN111423606A (en) | 2020-07-17 |
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| CN202010279042.9A Withdrawn CN111423606A (en) | 2020-04-10 | 2020-04-10 | Preparation and processing technology of waterborne polyurethane film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993537A (en) * | 2020-09-03 | 2020-11-27 | 程春凤 | Automatic production line for refractory ceramic plates |
| CN113123034A (en) * | 2021-03-05 | 2021-07-16 | 李金虎 | Ventilating and pressurizing type nano-silver melt-blown cloth diffusion device |
| CN113136653A (en) * | 2021-03-12 | 2021-07-20 | 刘训敏 | Glass fiber surface felt pasting device |
-
2020
- 2020-04-10 CN CN202010279042.9A patent/CN111423606A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993537A (en) * | 2020-09-03 | 2020-11-27 | 程春凤 | Automatic production line for refractory ceramic plates |
| CN113123034A (en) * | 2021-03-05 | 2021-07-16 | 李金虎 | Ventilating and pressurizing type nano-silver melt-blown cloth diffusion device |
| CN113136653A (en) * | 2021-03-12 | 2021-07-20 | 刘训敏 | Glass fiber surface felt pasting device |
| CN113136653B (en) * | 2021-03-12 | 2023-01-03 | 山东莱蔚特复合材料有限责任公司 | Glass fiber surface felt pasting device |
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