CN112848196A - Photovoltaic reflective film - Google Patents
Photovoltaic reflective film Download PDFInfo
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- CN112848196A CN112848196A CN202110019228.5A CN202110019228A CN112848196A CN 112848196 A CN112848196 A CN 112848196A CN 202110019228 A CN202110019228 A CN 202110019228A CN 112848196 A CN112848196 A CN 112848196A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
- B29C65/521—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive by spin coating
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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
- C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
- C08J5/124—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives using adhesives based on a macromolecular component
- C08J5/128—Adhesives without diluent
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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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- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/04—Starch derivatives
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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
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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Abstract
The invention belongs to the technical field of photovoltaic reflective film production, and particularly relates to a photovoltaic reflective film, wherein a preparation method of the photovoltaic reflective film comprises the following steps: s1: uniformly mixing 30-40 parts of PET resin, 10-12 parts of heat-resistant modified starch and 0.3-0.6 part of nano titanium dioxide, drying in a drying oven at 80-90 ℃ for 2-3h, adding 0.5-1.2 parts of calcium stearate and 0.1-0.2 part of degradation accelerator, uniformly stirring at a high speed, feeding into a single-screw extruder for extrusion, performing blow molding to form a film, and performing drawing treatment to obtain a first layer of film for later use; according to the invention, the trapezoid feed opening positioned at the bottom of the liquid storage barrel is opened intermittently through the trapezoid sealing strip, so that the adhesive liquid is sprayed intermittently on the edge of the coating roller and absorbed by the sponge sleeve on the outer edge of the coating roller, and when the sponge sleeve absorbed with the adhesive liquid passes through the surface of the first layer of film, the adhesive liquid can be extruded and uniformly coated on the surface of the first layer of film, so that the adhesive liquid is more uniformly coated, the coating thickness is smaller, and the waste of the adhesive liquid is avoided.
Description
Technical Field
The invention belongs to the technical field of photovoltaic reflective film production, and particularly relates to a photovoltaic reflective film.
Background
The photovoltaic reflective film is also called as a solar back panel film, the back panel film in the solar photovoltaic module packaging material is directly contacted with the packaging material of the external natural environment, the main material of the photovoltaic reflective film is a PET film with excellent electrical insulation property and water and gas resistance performance, but the PET film has poor performance of resisting heat, humidity, aging and ultraviolet light UV, so that the surface of the PET film is compounded or coated with a functional material to make up the defects. The backsheet as part of the protective assembly needs to have a high reliability, wherein the reflectivity of the backsheet affects the conversion efficiency of the photovoltaic module, and the higher the reflectivity, the higher the power.
At present, a high-performance single-layer modified film is mostly prepared firstly, then the multiple layers of modified films are bonded through adhesive liquid to obtain a high-performance backboard film, at present, the adhesive liquid is mostly coated on the film in a coating mode, most of the existing coating equipment directly extrudes the adhesive liquid on the film, and then the adhesive liquid is smeared on the surface of the film through a scraping plate.
To this end, the present invention proposes a photovoltaic reflective film to solve the above problems.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that the coating thickness is larger due to the existing coating mode, the quality of a back plate film is influenced, and the adhesive liquid is wasted, and when a film with the adhesive liquid passes through the lower part of a scraper, part of the adhesive liquid is pushed to the edges of two sides of the film by the scraper so as to flow to the bottom of the film through the adhesive liquid, the invention provides the photovoltaic light reflecting film.
The technical scheme adopted by the invention for solving the technical problems is as follows: the preparation method of the photovoltaic reflective film comprises the following steps:
s1: uniformly mixing 30-40 parts of PET resin, 10-12 parts of heat-resistant modified starch and 0.3-0.6 part of nano titanium dioxide, drying in a drying oven at 80-90 ℃ for 2-3h, adding 0.5-1.2 parts of calcium stearate and 0.1-0.2 part of degradation accelerator, uniformly stirring at a high speed, feeding into a single-screw extruder for extrusion, performing blow molding to form a film, and performing drawing treatment to obtain a first layer of film for later use;
s2: uniformly mixing 30-40 parts of PET resin, 10-15 parts of expanded perlite and 0.3-0.5 part of nano titanium dioxide, drying in a drying oven at 80-90 ℃ for 1-2h, adding 10-14 parts of polytrifluoroethylene and 3-5 parts of epoxy silicone oil, uniformly stirring at a high speed, feeding into a single-screw extruder for extrusion, performing blow molding to form a film, and performing drawing treatment to obtain a second layer of film for later use;
s3: adding 20-30 parts of epoxy ethylene resin, 25-30 parts of silane salicylic acid resin and 2-3 parts of curing agent into a reaction pot, stirring and melting, then adding an isopropanol solution to adjust the consistency of the mixed solution, then cooling to reduce the temperature of the adhesive in the reaction pot to 30-45 ℃, and then preserving the temperature for later use;
s4: sleeving a first layer of film winding drum on a first driven roller inside an adhesion box in a coating adhesion device, fixedly connecting the free end of a first layer of film on the surface edge of a winding roller, sleeving a second layer of film winding drum on the surface of a second driven roller, winding the free end of a second layer of film on the surface edge of the winding roller, adding adhesive liquid in S3 into a liquid storage barrel, starting a driving motor in transmission connection with a coating roller, uniformly coating the adhesive liquid adsorbed on a sponge sleeve on the upper surface of the first layer of film in the rotation process of the coating roller, and controlling the temperature inside the adhesion box at 85-90 ℃;
s5: the adhesive liquid coated on the upper surface of the first film layer is air-dried when passing through the stirring blades, the first film layer and the second film layer adhered with the adhesive liquid are pressed and bonded when passing through two groups of extrusion rollers which rotate relatively, and are wound by a winding roller;
s6: cutting and surface treating the film wound on the winding roller, and packaging and warehousing after the film is qualified through inspection;
wherein the coating and bonding device in S4 comprises a bonding box, a squeezing roller, a liquid storage barrel and a coating roller; the winding drum of the first layer of film is sleeved on the first driven roller, and the free end of the first layer of film bypasses the guide roller and is fixedly connected with the edge of the winding roller; the first driven roller, the guide roller and the winding roller are all positioned inside the bonding box; the first driven roller and the guide roller are movably arranged on the rear side wall of the bonding box; the rear side end of the winding roller penetrates out of the rear side wall of the bonding box and is fixedly connected with a rotating shaft of the driving motor; the first driven roller and the guide roller are positioned in the same horizontal plane and are close to the top of the bonding box; the winding roller is positioned obliquely below the guide roller and is positioned close to the bottom of the bonding box; the second layer of film winding drum is sleeved on the second driven roller, and the free end of the film on the second layer of film winding drum is also wound on the edge of the winding roller; the second driven roller and the guide roller are positioned on the same horizontal plane, and the second driven roller is movably arranged on the rear side wall of the bonding box; two groups of squeezing rollers are arranged below the guide roller and the second driven roller on the rear side wall of the bonding box, and the first layer of film and the second layer of film both penetrate between the two groups of squeezing rollers; rotating shafts of the two groups of squeezing rollers extend out of the rear side wall of the bonding box, second circular gear discs are fixedly arranged on the rotating shafts of the squeezing rollers extending out of the rear side wall, and the two groups of second circular gear discs are in meshing transmission with each other; the rotating shafts of one group of the squeezing rollers are in transmission connection with a driving motor; a coating roller is arranged on the upper surface close to the first layer of film; the rear side end of the coating roller is fixedly connected with a rotating shaft of a driving motor fixed outside the rear side wall of the bonding box; the outer edge of the coating roller is provided with a sponge sleeve; a liquid storage barrel is arranged at the top of the bonding box and is positioned right above the coating roller; the top of the liquid storage barrel is provided with a sealing cover; the bottom of the liquid storage barrel is provided with a trapezoidal feed opening; the size of the upper port of the trapezoid feed opening is larger than that of the lower port; a trapezoidal sealing strip is movably embedded in the trapezoidal feed opening; the size of the top of the trapezoid sealing strip is larger than that of the bottom; an arc-shaped plate is fixedly arranged at the top of the trapezoidal sealing strip; the two ends of the arc-shaped plate are inclined downwards, and the two ends of the arc-shaped plate are fixedly connected with the inner wall of the bottom of the liquid storage barrel through springs; a magnet is fixedly arranged inside the trapezoidal sealing strip; the position, close to the edge, inside the coating roller is also uniformly provided with magnets; the magnets on the trapezoidal sealing strips are vertically arranged, and the magnets on the coating roll are arranged along the radial direction of the coating roll; the polarity of the bottom of the magnet on the trapezoidal sealing strip is the same as that of the outer side end of the magnet on the coating roller;
when the coating device works, the trapezoid feed opening positioned at the bottom of the liquid storage barrel is intermittently opened through the trapezoid sealing strip, so that the adhesive liquid is intermittently sprayed on the edge of the coating roller and absorbed by the sponge sleeve on the outer edge of the coating roller, and when the sponge sleeve absorbing the adhesive liquid passes through the surface of the first layer of film, the adhesive liquid can be extruded and uniformly coated on the surface of the first layer of film, so that the adhesive liquid is more uniformly coated, the coating thickness is smaller, and the waste of the adhesive liquid is avoided;
in actual operation, the rotation of a driving motor fixedly connected with the coating roller drives the coating roller to rotate, the magnet positioned in the coating roller intermittently passes through the bottom of the trapezoidal sealing strip in the rotating process of the coating roller, the magnet positioned in the coating roller is repelled with the magnet positioned in the trapezoidal sealing strip, the trapezoidal sealing strip moves upwards to open the trapezoidal discharging opening, the adhesive liquid positioned in the liquid storage barrel flows downwards through the trapezoidal discharging opening and falls on the surface of the sponge sleeve to be absorbed by the sponge sleeve, when the magnet on the coating roller rotates to a position deviating from the trapezoidal sealing strip, the trapezoidal sealing strip falls under the self gravity, meanwhile, the spring fixedly connected with the arc plate enables the trapezoidal sealing strip to be tightly pressed in the trapezoidal discharging opening to seal the trapezoidal discharging opening, and the trapezoidal sealing strip repeatedly moves upwards and downwards to realize the intermittent opening of the trapezoidal discharging opening, and then can play the effect of adding the bonding liquid to the surface interval of the sponge cover, when the position that adds the bonding liquid on the sponge cover rotates to the position that contacts with first layer film, the bonding liquid that absorbs on the sponge cover will coat on the surface of first layer film, and then realize the coating, first layer film and second layer film coated with bonding liquid are extruded when passing through two sets of squeeze rolls that rotate relatively, and then bond first layer film and second layer film each other, simple process.
Preferably, an annular rubber bag is arranged between the coating roller and the sponge sleeve; the inner wall of the annular rubber bag is adhered to the edge of the outer wall of the coating roller, and the sponge sleeve is adhered to the edge of the outer surface of the annular rubber bag; liquid suction holes are uniformly formed in the outer surface of the annular rubber bag; a plurality of groups of rubber partition plates are arranged in the annular rubber bag along the radial direction, and the rubber partition plates divide the interior of the annular rubber bag into a plurality of chambers; the magnet on the coating roller is arranged inside the sliding block; the sliding block is connected with a linear sliding rail arranged in the radial direction of the coating roller in a sliding manner; one end of the sliding block, which is far away from the annular rubber bag, is fixedly connected with the inner side end of the linear slide rail through a spring, and one end of the sliding block, which is close to the annular rubber bag, is fixedly connected with the inner wall of the outer edge of the annular rubber bag through a pull rope; when the device works, when the magnets on the trapezoidal sealing strip and the magnets on the sliding block are in corresponding positions, the two magnets repel each other at the moment, so that the sliding block slides towards the direction far away from the annular rubber bag, the stay cord fixedly connected with the sliding block pulls the annular rubber bag, the annular rubber bag is sunken downwards and exhausts gas in the cavity, the adhesive liquid falling from the trapezoidal feed opening falls into the sunken part of the annular rubber bag, when the magnets on the sliding block gradually move towards the direction deviated from the trapezoidal sealing strip, the sliding block moves towards the position far away from the central shaft of the coating roller under the action of the spring fixedly connected with the sliding block, the pulling force of the sliding block on the stay cord is reduced, the annular rubber bag gradually recovers the original shape and sucks the adhesive liquid into the cavity, and the cavity sucked with the adhesive liquid rotates to the surface of the first layer of film, the bonding liquid that is located the cavity inside can be evenly extruded from the imbibition hole, improves the homogeneity of coating, and bonding liquid stores in the inside of cavity simultaneously, comes out from the imbibition hole slowly-releasing when receiving the extrusion of first layer film for the ejection of compact is more continuous, even, compares with the surface that directly falls on the sponge cover with bonding liquid, has avoided just beginning the condition that coating thickness is little after big with first layer film contact.
Preferably, a scraping plate for scraping off redundant adhesive liquid at the outer edge of the sponge sleeve is arranged in the bonding box; one end of the scraping plate close to the sponge sleeve is obliquely and upwards arranged, and one end of the scraping plate far away from the sponge sleeve is fixedly connected with the opening of the columnar hollow heat-insulating cylinder; a square insertion rod is fixedly arranged at the rear side end of the columnar hollow heat-insulating cylinder; the square insertion rod is inserted into the insertion hole in the rear side wall of the bonding box; when the coating roller is in work, in the process that the coating roller is driven by the driving motor to rotate, the sponge sleeve passes through the scraping plate, then the scraping plate can scrape off the adhesive liquid which is positioned on the surface of the sponge sleeve and is not completely absorbed by the sponge sleeve or enters the cavity inside the annular rubber bag through the liquid suction hole, the phenomenon that the thickness is large when a first layer of thin film is coated is avoided, the adhesive liquid scraped off by the scraping plate can enter the inside of the columnar hollow heat-insulating cylinder to be collected and subjected to heat insulation, the adhesive liquid entering the inside of the columnar hollow heat-insulating cylinder is prevented from being solidified, when the adhesive liquid in the columnar hollow heat-insulating cylinder is accumulated to a certain degree, the columnar hollow heat-insulating cylinder can be directly pulled out from the rear side wall of the adhesive box, the square insertion rod positioned at the rear side end of the columnar hollow heat-insulating cylinder can be separated from the inside of the insertion hole of the rear side wall of the adhesive box at the moment, and then the, is convenient to use.
Preferably, a rotating rod is arranged in the bonding box and above the guide roller and the second driven roller; the rear side end of the rotating rod extends out of the rear side wall of the bonding box and is fixedly connected with the first circular gear plate; a first circular gear disc is also fixedly arranged on a rotating shaft of a driving motor fixedly connected with the coating roller, and the two groups of first circular gear discs are in transmission connection through a gear belt; stirring blades are uniformly arranged on the edge of the rotating rod, which is positioned in the bonding box; the stirring blades are made of a tough material; the during operation, when driving motor drives the coating roll pivoted, the first circular gear dish that sets up in the driving motor pivot that links firmly with the coating roll will drive the first circular gear dish on the dwang through gear belt and rotate, and then drive the dwang and rotate, the stirring blade that the dwang pivoted in-process lies in the dwang edge will rotate and then produce wind, wind can carry out slight solidification with the coating at the adhesive liquid on first layer film surface, prevent that adhesive liquid is extruded when first layer film and second floor film process squeeze roll, and can prevent simultaneously that adhesive liquid humidity from leading to greatly skidding because of taking place between first layer film and the second floor film misplacing.
Preferably, a U-shaped groove body is fixedly arranged at the lower port of the trapezoidal feed opening at the bottom of the liquid storage barrel; the bottom of the U-shaped groove body is designed into an arc-shaped structure, and liquid outlet holes are uniformly formed in the bottom of the U-shaped groove body; during operation, when magnet on the sliding block and the magnet on the trapezoidal sealing strip repel each other, trapezoidal sealing strip shifts up, and the inside adhesive liquid that is located the stock solution bucket gets into the inside of U-shaped cell body through trapezoidal feed opening to from the even flow down in play liquid hole on the U-shaped cell body, make more even that adhesive liquid sprays on the surface of sponge cover, and then make subsequent coating more even.
Preferably, the bottom of the liquid storage barrel is designed into an arc-shaped structure protruding downwards; the during operation, because the bottom of liquid storage bucket is bellied arc structural design downwards, can make the inside binding liquid of bonding case all unload from the trapezoidal feed opening of liquid storage bucket bottom, avoid partial binding liquid to remain in the bottom of liquid storage bucket, and when scrubbing the inside of liquid storage bucket, be located the inside water and the washing liquid that are used for scrubbing of liquid storage bucket and can all unload from the bottom of trapezoidal feed opening, avoid water and washing liquid to remain and influence the next time and add the binding liquid in the inside of liquid storage bucket.
The invention has the following beneficial effects:
1. according to the photovoltaic reflective film, the trapezoid feed opening at the bottom of the liquid storage barrel is opened intermittently through the trapezoid sealing strip, so that the adhesive liquid is sprayed intermittently on the edge of the coating roller and is absorbed by the sponge sleeve on the outer edge of the coating roller, and when the sponge sleeve absorbing the adhesive liquid passes through the surface of the first layer of film, the adhesive liquid can be extruded and uniformly coated on the surface of the first layer of film, so that the adhesive liquid is more uniformly coated, the coating thickness is smaller, and the waste of the adhesive liquid is avoided.
2. The photovoltaic reflective film is provided with the annular rubber bag and the sliding block, when the magnet on the trapezoidal sealing strip and the magnet on the sliding block are positioned correspondingly, the sliding block slides towards the direction far away from the annular rubber bag, the pull rope fixedly connected with the sliding block pulls the annular rubber bag to enable the annular rubber bag to be sunken downwards and exhaust gas in the cavity, adhesive liquid falls into the sunken part of the annular rubber bag, when the magnet on the sliding block gradually moves towards the direction deviating from the trapezoidal sealing strip, the annular rubber bag gradually restores the original shape and sucks the adhesive liquid into the cavity, when the cavity sucked with the adhesive liquid rotates to the surface of the first layer of film, the adhesive liquid in the cavity can be uniformly extruded from the liquid suction hole, the coating uniformity is improved, the adhesive liquid is stored in the cavity and slowly released from the liquid suction hole when being squeezed by the first layer of film, the discharging is more continuous and uniform, and compared with the situation that the adhesive liquid directly falls on the surface of the sponge sleeve, the situation that the coating thickness is small after the coating thickness is large when the adhesive liquid is in contact with the first layer of film is avoided.
3. According to the photovoltaic reflective film, the stirring blades are arranged, so that when the coating roller is driven by the driving motor to rotate, the first circular gear disc arranged on the rotating shaft of the driving motor fixedly connected with the coating roller can drive the first circular gear disc on the rotating rod to rotate through the gear belt, and further drive the rotating rod to rotate, the stirring blades positioned at the edge of the rotating rod can rotate during the rotating process of the rotating rod to generate wind, the wind can slightly solidify adhesive liquid coated on the surface of the first layer of film, the adhesive liquid is prevented from being extruded when the first layer of film and the second layer of film pass through the extrusion roller, and meanwhile, the situation that the first layer of film and the second layer of film are staggered due to slipping caused by high humidity of the adhesive liquid can be prevented.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a process step diagram of a photovoltaic reflective film;
FIG. 2 is a schematic view of a first perspective structure of the coating and bonding apparatus of the present invention;
FIG. 3 is a second perspective view of the coating and bonding apparatus of the present invention;
FIG. 4 is a schematic view showing the internal structure of the coating and bonding apparatus of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
in the figure: the device comprises an adhesive box 1, a first driven roller 2, a guide roller 3, a second driven roller 4, an extrusion roller 5, a winding roller 6, a stirring blade 7, a sponge sleeve 9, a liquid storage barrel 10, a sealing cover 11, a square insertion rod 12, a first circular gear disc 13, a second circular gear disc 14, a cylindrical hollow heat-insulating barrel 15, a scraping plate 16, an arc-shaped plate 17, a trapezoidal sealing strip 18, a magnet 19, a liquid suction hole 20, a liquid outlet hole 21, a U-shaped groove body 22, a pull rope 23, an annular rubber bag 24, a rubber partition plate 25, a coating roller 26, a sliding block 27, a linear sliding rail 28, a trapezoidal discharge opening 29, an insertion hole 30, a gear belt 31 and a rotating rod 32.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 5, the preparation method of the photovoltaic reflective film of the present invention comprises the following steps:
s1: uniformly mixing 30-40 parts of PET resin, 10-12 parts of heat-resistant modified starch and 0.3-0.6 part of nano titanium dioxide, drying in a drying oven at 80-90 ℃ for 2-3h, adding 0.5-1.2 parts of calcium stearate and 0.1-0.2 part of degradation accelerator, uniformly stirring at a high speed, feeding into a single-screw extruder for extrusion, performing blow molding to form a film, and performing drawing treatment to obtain a first layer of film for later use;
s2: uniformly mixing 30-40 parts of PET resin, 10-15 parts of expanded perlite and 0.3-0.5 part of nano titanium dioxide, drying in a drying oven at 80-90 ℃ for 1-2h, adding 10-14 parts of polytrifluoroethylene and 3-5 parts of epoxy silicone oil, uniformly stirring at a high speed, feeding into a single-screw extruder for extrusion, performing blow molding to form a film, and performing drawing treatment to obtain a second layer of film for later use;
s3: adding 20-30 parts of epoxy ethylene resin, 25-30 parts of silane salicylic acid resin and 2-3 parts of curing agent into a reaction pot, stirring and melting, then adding an isopropanol solution to adjust the consistency of the mixed solution, then cooling to reduce the temperature of the adhesive in the reaction pot to 30-45 ℃, and then preserving the temperature for later use;
s4: sleeving a first layer of film reel on a first driven roller 2 in an adhesion box 1 in a coating and bonding device, fixedly connecting the free end of the first layer of film on the surface edge of a winding roller 6, sleeving a second layer of film reel on the surface of a second driven roller 4, winding the free end of the second layer of film on the surface edge of the winding roller 6, adding a bonding liquid in S3 into a liquid storage barrel 10, starting a driving motor in transmission connection with a coating roller 26, uniformly coating the bonding liquid adsorbed on a sponge sleeve 9 on the upper surface of the first layer of film in the rotation process of the coating roller 26, and controlling the temperature in the adhesion box 1 to be 85-90 ℃;
s5: the adhesive solution coated on the upper surface of the first film is air-dried when passing through the stirring blades 7, the first film and the second film adhered with the adhesive solution are pressed and bonded when passing through the two groups of extrusion rollers 5 which rotate relatively, and are wound by the winding roller 6;
s6: cutting and surface treating the film wound on the winding roller 6, and packaging and warehousing after the film is qualified through inspection;
wherein the coating bonding device described in S4 includes a bonding case 1, a squeeze roller 5, a liquid storage tank 10, and a coating roller 26; the winding drum of the first layer of film is sleeved on the first driven roller 2, and the free end of the first layer of film bypasses the guide roller 3 and is fixedly connected with the edge of the winding roller 6; the first driven roller 2, the guide roller 3 and the winding roller 6 are all positioned inside the bonding box 1; the first driven roller 2 and the guide roller 3 are movably arranged on the rear side wall of the bonding box 1; the rear side end of the winding roller 6 penetrates through the rear side wall of the bonding box 1 and is fixedly connected with a rotating shaft of a driving motor; the first driven roller 2 and the guide roller 3 are positioned in the same horizontal plane and are close to the top of the bonding box 1; the winding roller 6 is positioned obliquely below the guide roller 3 and is positioned close to the bottom of the bonding box 1; the second layer of film winding drum is sleeved on the second driven roller 4, and the free end of the film on the second layer of film winding drum is also wound on the edge of the winding roller 6; the second driven roller 4 and the guide roller 3 are positioned on the same horizontal plane, and the second driven roller 4 is movably arranged on the rear side wall of the bonding box 1; two groups of squeezing rollers 5 are arranged below the guide roller 3 and the second driven roller 4 on the rear side wall of the bonding box 1, and the first layer of film and the second layer of film both penetrate between the two groups of squeezing rollers 5; the rotating shafts of the two groups of squeezing rollers 5 extend out of the rear side wall of the bonding box 1, second circular gear discs 14 are fixedly arranged on the rotating shafts of the squeezing rollers 5 extending out of the rear side wall, and the two groups of second circular gear discs 14 are in meshing transmission with each other; the rotating shafts of one group of the squeezing rollers 5 are in transmission connection with a driving motor; a coating roller 26 is arranged close to the upper surface of the first layer of film; the rear side end of the coating roller 26 is fixedly connected with a rotating shaft of a driving motor fixed outside the rear side wall of the bonding box 1; the outer edge of the coating roller 26 is provided with a sponge sleeve 9; a liquid storage barrel 10 is arranged at the top of the bonding box 1 and right above the coating roller 26; the top of the liquid storage barrel 10 is provided with a sealing cover 11; the bottom of the liquid storage barrel 10 is provided with a trapezoidal feed opening 29; the size of the upper port of the trapezoid feed opening 29 is larger than that of the lower port; a trapezoidal sealing strip 18 is movably embedded in the trapezoidal feed opening 29; the top dimension of the trapezoidal sealing strip 18 is larger than the bottom dimension; the top of the trapezoidal sealing strip 18 is fixedly provided with an arc-shaped plate 17; the two ends of the arc-shaped plate 17 are inclined downwards, and the two ends of the arc-shaped plate 17 are fixedly connected with the inner wall of the bottom of the liquid storage barrel 10 through springs; a magnet 19 is fixedly arranged inside the trapezoidal sealing strip 18; the position close to the edge inside the coating roller 26 is also uniformly provided with magnets 19; the magnets 19 on the trapezoidal sealing strips 18 are vertically arranged, and the magnets 19 on the coating roll 26 are arranged along the radial direction of the coating roll 26; the polarity of the bottom of the magnet 19 on the trapezoidal sealing strip 18 is the same as that of the outer end of the magnet 19 on the coating roller 26;
when the coating machine works, the trapezoid feed opening 29 positioned at the bottom of the liquid storage barrel 10 is intermittently opened through the trapezoid sealing strip 18, so that the adhesive liquid is intermittently sprayed on the edge of the coating roller 26 and is absorbed by the sponge sleeve 9 on the outer edge of the coating roller 26, and when the sponge sleeve 9 absorbing the adhesive liquid passes through the surface of the first layer of film, the adhesive liquid can be extruded and uniformly coated on the surface of the first layer of film, so that the adhesive liquid is more uniformly coated, the coating thickness is smaller, and the waste of the adhesive liquid is avoided;
in actual operation, the rotation of the driving motor fixedly connected with the coating roller 26 drives the coating roller 26 to rotate, the magnet 19 positioned inside the coating roller 26 will intermittently pass through the bottom of the trapezoidal sealing strip 18 during the rotation of the coating roller 26, and then the magnet 19 positioned inside the coating roller 26 will repel the magnet 19 inside the trapezoidal sealing strip 18, the trapezoidal sealing strip 18 will move upwards and open the trapezoidal discharge opening 29, at this time, the adhesive liquid positioned inside the liquid storage barrel 10 will flow downwards through the trapezoidal discharge opening 29 and fall on the surface of the sponge sleeve 9 to be absorbed by the sponge sleeve 9, when the magnet 19 on the coating roller 26 rotates to a position deviating from the trapezoidal sealing strip 18, at this time, the trapezoidal sealing strip 18 will fall under the self-gravity, and at the same time, the spring fixedly connected with the arc-shaped plate 17 will make the trapezoidal sealing strip 18 tightly press inside the trapezoidal discharge opening 29 to seal the trapezoidal discharge opening 29, trapezoidal sealing strip 18 shifts up repeatedly, decline can realize the opening of trapezoidal feed opening 29 intermittent type, and then can play the effect of adding the bonding liquid to the surface intermittent type of sponge cover 9, when the position that adds the bonding liquid on the sponge cover 9 rotates to the position with first layer film contact, the surface at first layer film will be coated to the bonding liquid that absorbs on the sponge cover 9, and then realize the coating, the first layer film that scribbles the bonding liquid is extruded when passing through two sets of relative pivoted squeeze rolls 5 with the second layer film, and then bond first layer film and second layer film each other, and is simple in process.
As an embodiment of the present invention, an annular rubber bag 24 is provided between the coating roller 26 and the sponge case 9; the inner wall of the annular rubber bag 24 is adhered to the edge of the outer wall of the coating roller 26, and the sponge sleeve 9 is adhered to the edge of the outer surface of the annular rubber bag 24; the outer surface of the annular rubber bag 24 is uniformly provided with liquid sucking holes 20; a plurality of groups of rubber partition plates 25 are arranged in the annular rubber bag 24 along the radial direction, and the rubber partition plates 25 divide the interior of the annular rubber bag 24 into a plurality of chambers; the magnet 19 on the coating roller 26 is arranged inside the sliding block 27; the sliding block 27 is connected with a linear slide rail 28 arranged in the radial direction of the coating roller 26 in a sliding manner; one end of the sliding block 27, which is far away from the annular rubber bag 24, is fixedly connected with the inner side end of the linear slide rail 28 through a spring, and one end of the sliding block 27, which is close to the annular rubber bag 24, is fixedly connected with the inner wall of the outer edge of the annular rubber bag 24 through a pull rope 23; when the device works, when the magnets 19 on the trapezoidal sealing strip 18 and the magnets 19 on the sliding block 27 are in corresponding positions, at this time, the two magnets 19 repel each other, so that the sliding block 27 slides in a direction away from the annular rubber bag 24, and then the pulling rope 23 fixedly connected with the sliding block 27 pulls the annular rubber bag 24, so that the annular rubber bag 24 sinks downwards and exhausts the gas in the chamber, at this time, the adhesive liquid falling from the trapezoidal discharge opening 29 falls into the recessed part of the annular rubber bag 24, and when the magnets 19 on the sliding block 27 gradually move in a direction away from the trapezoidal sealing strip 18, the sliding block 27 moves in a position away from the central axis of the sliding block of the coating roller 26 under the action of the spring fixedly connected with the sliding block 27, so that the pulling force of the pulling rope by the sliding block 27 becomes small, and the annular rubber bag 24 gradually recovers and sucks the adhesive liquid into the chamber, and then when the cavity that has inhaled the bonding liquid rotates the surface to first layer film, the bonding liquid that is located the cavity inside can follow imbibition hole 20 and evenly extrude, improve the homogeneity of coating, the bonding liquid is stored in the inside of cavity simultaneously, follow imbibition hole 20 slowly-releasing when receiving the extrusion of first layer film, make the ejection of compact more last, even, compare with the surface that directly falls on sponge cover 9 with the bonding liquid, the condition that coating thickness is little after just beginning coating thickness big when having avoided contacting with first layer film.
As an embodiment of the invention, a scraping plate 16 for scraping off the excessive adhesive liquid at the outer edge of the sponge sleeve 9 is arranged inside the bonding box 1; one end of the scraping plate 16 close to the sponge sleeve 9 is obliquely and upwards arranged, and one end of the scraping plate 16 far away from the sponge sleeve 9 is fixedly connected with an opening of the columnar hollow heat-insulating cylinder 15; a square insertion rod 12 is fixedly arranged at the rear side end of the columnar hollow heat-insulating cylinder 15; the square plug-in rod 12 is plugged in the plug-in hole 30 on the rear side wall of the bonding box 1; when the coating device works, in the process that the coating roller 26 is driven to rotate by the driving motor, the sponge sleeve 9 passes through the scraping plate 16, and then the scraping plate 16 can scrape off the adhesive liquid which is positioned on the surface of the sponge sleeve 9 and is not absorbed by the sponge sleeve 9 completely and enters the cavity inside the annular rubber bag 24 through the liquid suction hole 20, so that the situation that the thickness is large when a first layer of thin film is coated is avoided, the adhesive liquid scraped off by the scraping plate 16 enters the inside of the columnar hollow heat-insulating cylinder 15 to be collected and insulated, the adhesive liquid entering the inside of the columnar hollow heat-insulating cylinder 15 is prevented from being solidified, when the adhesive liquid inside the columnar hollow heat-insulating cylinder 15 is accumulated to a certain degree, the columnar hollow heat-insulating cylinder 15 can be directly pulled off from the rear side wall of the bonding box 1, at the moment, the square insertion rod 12 positioned at the rear end of the columnar hollow heat-insulating cylinder 15 can be separated from the inside of the insertion, then the adhesive liquid in the cylindrical hollow heat-insulating cylinder 15 is moved into other recycling barrels for recycling, and the use is convenient.
As an embodiment of the present invention, a rotating rod 32 is provided inside the bonding case 1 above the guide roller 3 and the second driven roller 4; the rear side end of the rotating rod 32 extends out of the rear side wall of the bonding box 1 and is fixedly connected with the first circular gear plate 13; a first circular gear disc 13 is also fixedly arranged on a rotating shaft of a driving motor fixedly connected with the coating roller 26, and the two groups of first circular gear discs 13 are in transmission connection through a gear belt 31; the stirring blades 7 are uniformly arranged on the edge of the rotating rod 32 positioned in the bonding box 1; the stirring blades 7 are made of a tough material; the during operation, when driving motor drives coating roll 26 pivoted, the first ring gear dish 13 that sets up in the driving motor pivot that links firmly with coating roll 26 will drive the first ring gear dish 13 on dwang 32 through gear belt 31 and rotate, and then drive dwang 32 and rotate, dwang 32 pivoted in-process is located stirring blade 7 at dwang 32 edge and will rotate and then produce wind, wind can carry out slight solidification with the coating at the adhesive liquid on first layer film surface, prevent that first layer film and second floor film from being extruded when squeeze roll 5, and can prevent simultaneously that adhesive liquid humidity from leading to greatly slipping and misplacing because of taking place between first layer film and the second floor film.
As an embodiment of the invention, a U-shaped groove body 22 is fixedly arranged at the lower port of the trapezoidal feed opening 29 at the bottom of the liquid storage barrel 10; the bottom of the U-shaped groove body 22 is designed to be of an arc-shaped structure, and liquid outlet holes 21 are uniformly formed in the bottom of the U-shaped groove body 22; during operation, when magnet 19 on the sliding block 27 and magnet 19 on the trapezoidal sealing strip 18 repel each other, trapezoidal sealing strip 18 moves up, and the bonding liquid that is located the inside of stock solution bucket 10 gets into the inside of U-shaped groove 22 through trapezoidal feed opening 29 to from the even stream of play liquid hole 21 on the U-shaped groove 22, make bonding liquid spray more even on the surface of sponge cover 9, and then make subsequent coating more even.
As an embodiment of the present invention, the bottom of the liquid storage barrel 10 is designed to be an arc structure protruding downwards; the during operation, because the bottom of stock solution bucket 10 is bellied arc structural design downwards, can make the inside adhesive fluid of bonding case 1 all unload from the trapezoidal feed opening 29 of stock solution bucket 10 bottom, avoid some adhesive fluid to remain in the bottom of stock solution bucket 10, and when scrubbing the inside of stock solution bucket 10, be located the inside water that is used for scrubbing of stock solution bucket 10 and wash liquid can all unload from the bottom of trapezoidal feed opening 29, avoid water and washing liquid to remain and influence the next time and add adhesive fluid in the inside of stock solution bucket 10.
The specific working process of the invention is as follows:
when the coating machine works, the trapezoid feed opening 29 positioned at the bottom of the liquid storage barrel 10 is intermittently opened through the trapezoid sealing strip 18, so that the adhesive liquid is intermittently sprayed on the edge of the coating roller 26 and is absorbed by the sponge sleeve 9 on the outer edge of the coating roller 26, and when the sponge sleeve 9 absorbing the adhesive liquid passes through the surface of the first layer of film, the adhesive liquid can be extruded and uniformly coated on the surface of the first layer of film, so that the adhesive liquid is more uniformly coated, the coating thickness is smaller, and the waste of the adhesive liquid is avoided;
in actual operation, the rotation of the driving motor fixedly connected with the coating roller 26 drives the coating roller 26 to rotate, the magnet 19 positioned inside the coating roller 26 will intermittently pass through the bottom of the trapezoidal sealing strip 18 during the rotation of the coating roller 26, and then the magnet 19 positioned inside the coating roller 26 will repel the magnet 19 inside the trapezoidal sealing strip 18, the trapezoidal sealing strip 18 will move upwards and open the trapezoidal discharge opening 29, at this time, the adhesive liquid positioned inside the liquid storage barrel 10 will flow downwards through the trapezoidal discharge opening 29 and fall on the surface of the sponge sleeve 9 to be absorbed by the sponge sleeve 9, when the magnet 19 on the coating roller 26 rotates to a position deviating from the trapezoidal sealing strip 18, at this time, the trapezoidal sealing strip 18 will fall under the self-gravity, and at the same time, the spring fixedly connected with the arc-shaped plate 17 will make the trapezoidal sealing strip 18 tightly press inside the trapezoidal discharge opening 29 to seal the trapezoidal discharge opening 29, trapezoidal sealing strip 18 shifts up repeatedly, decline can realize the opening of trapezoidal feed opening 29 intermittent type, and then can play the effect of adding the bonding liquid to the surface intermittent type of sponge cover 9, when the position that adds the bonding liquid on the sponge cover 9 rotates to the position with first layer film contact, the surface at first layer film will be coated to the bonding liquid that absorbs on the sponge cover 9, and then realize the coating, the first layer film that scribbles the bonding liquid is extruded when passing through two sets of relative pivoted squeeze rolls 5 with the second layer film, and then bond first layer film and second layer film each other, and is simple in process.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A photovoltaic reflective film, comprising: the preparation method comprises the following steps:
s1: uniformly mixing 30-40 parts of PET resin, 10-12 parts of heat-resistant modified starch and 0.3-0.6 part of nano titanium dioxide, drying in a drying oven at 80-90 ℃ for 2-3h, adding 0.5-1.2 parts of calcium stearate and 0.1-0.2 part of degradation accelerator, uniformly stirring at a high speed, feeding into a single-screw extruder for extrusion, performing blow molding to form a film, and performing drawing treatment to obtain a first layer of film for later use;
s2: uniformly mixing 30-40 parts of PET resin, 10-15 parts of expanded perlite and 0.3-0.5 part of nano titanium dioxide, drying in a drying oven at 80-90 ℃ for 1-2h, adding 10-14 parts of polytrifluoroethylene and 3-5 parts of epoxy silicone oil, uniformly stirring at a high speed, feeding into a single-screw extruder for extrusion, performing blow molding to form a film, and performing drawing treatment to obtain a second layer of film for later use;
s3: adding 20-30 parts of epoxy ethylene resin, 25-30 parts of silane salicylic acid resin and 2-3 parts of curing agent into a reaction pot, stirring and melting, then adding an isopropanol solution to adjust the consistency of the mixed solution, then cooling to reduce the temperature of the adhesive in the reaction pot to 30-45 ℃, and then preserving the temperature for later use;
s4: sleeving a first layer of film reel on a first driven roller (2) in an adhesion box (1) in a coating and adhesion device, fixedly connecting the free end of the first layer of film on the surface edge of a winding roller (6), sleeving a second layer of film reel on the surface of a second driven roller (4), winding the free end of the second layer of film on the surface edge of the winding roller (6), adding adhesive liquid in S3 into a liquid storage barrel (10), starting a driving motor in transmission connection with a coating roller (26), uniformly coating the adhesive liquid adsorbed on a sponge sleeve (9) on the upper surface of the first layer of film in the rotation process of the coating roller (26), and controlling the temperature in the adhesion box (1) to be 85-90 ℃;
s5: the adhesive liquid coated on the upper surface of the first layer of film is dried when passing through the stirring blades (7), the first layer of film and the second layer of film adhered with the adhesive liquid are pressed and bonded when passing through the two groups of extrusion rollers (5) which rotate relatively, and are wound by the winding roller (6);
s6: cutting and surface treating the film wound on the winding roller (6), and packaging and warehousing after the film is qualified through inspection;
wherein the coating and bonding device in S4 comprises a bonding box (1), a squeezing roller (5), a liquid storage barrel (10) and a coating roller (26); the winding drum of the first layer of film is sleeved on the first driven roller (2), and the free end of the first layer of film bypasses the guide roller (3) and is fixedly connected with the edge of the winding roller (6); the first driven roller (2), the guide roller (3) and the winding roller (6) are all positioned inside the bonding box (1); the first driven roller (2) and the guide roller (3) are movably arranged on the rear side wall of the bonding box (1); the rear side end of the winding roller (6) penetrates out of the rear side wall of the bonding box (1) and is fixedly connected with a rotating shaft of a driving motor; the first driven roller (2) and the guide roller (3) are positioned in the same horizontal plane and are close to the top of the bonding box (1); the winding roller (6) is positioned obliquely below the guide roller (3) and is positioned close to the bottom of the bonding box (1); the second layer of film winding drum is sleeved on the second driven roller (4), and the free end of the film on the second layer of film winding drum is also wound on the edge of the winding roller (6); the second driven roller (4) and the guide roller (3) are positioned on the same horizontal plane, and the second driven roller (4) is movably arranged on the rear side wall of the bonding box (1); two groups of squeezing rollers (5) are arranged below the guide roller (3) and the second driven roller (4) on the rear side wall of the bonding box (1), and the first layer of film and the second layer of film both penetrate between the two groups of squeezing rollers (5); the rotating shafts of the two groups of squeezing rollers (5) extend out of the rear side wall of the bonding box (1), second circular gear discs (14) are fixedly arranged on the rotating shafts of the squeezing rollers (5) extending out of the rear side wall, and the two groups of second circular gear discs (14) are in meshing transmission with each other; the rotating shaft of one group of the squeezing rollers (5) is in transmission connection with a driving motor; a coating roller (26) is arranged close to the upper surface of the first layer of film; the rear side end of the coating roller (26) is fixedly connected with a rotating shaft of a driving motor fixed outside the rear side wall of the bonding box (1); the outer edge of the coating roller (26) is provided with a sponge sleeve (9); a liquid storage barrel (10) is arranged at the top of the bonding box (1) and right above the coating roller (26); the top of the liquid storage barrel (10) is provided with a sealing cover (11); the bottom of the liquid storage barrel (10) is provided with a trapezoidal feed opening (29); the size of the upper port of the trapezoid feed opening (29) is larger than that of the lower port; a trapezoidal sealing strip (18) is movably embedded in the trapezoidal feed opening (29); the top size of the trapezoid sealing strip (18) is larger than the bottom size; an arc-shaped plate (17) is fixedly arranged at the top of the trapezoidal sealing strip (18); two ends of the arc-shaped plate (17) are inclined downwards, and two ends of the arc-shaped plate (17) are fixedly connected with the inner wall of the bottom of the liquid storage barrel (10) through springs; a magnet (19) is fixedly arranged inside the trapezoidal sealing strip (18); the position close to the edge inside the coating roller (26) is also uniformly provided with magnets (19); the magnets (19) on the trapezoidal sealing strips (18) are vertically arranged, and the magnets (19) on the coating roll (26) are arranged along the radial direction of the coating roll (26); the polarity of the bottom of the magnet (19) on the trapezoidal sealing strip (18) is the same as that of the outer end of the magnet (19) on the coating roller (26).
2. The photovoltaic light reflecting film according to claim 1, wherein: an annular rubber bag (24) is arranged between the coating roller (26) and the sponge sleeve (9); the inner wall of the annular rubber bag (24) is adhered to the edge of the outer wall of the coating roller (26), and the sponge sleeve (9) is adhered to the edge of the outer surface of the annular rubber bag (24); the outer surface of the annular rubber bag (24) is uniformly provided with liquid suction holes (20); a plurality of groups of rubber partition plates (25) are arranged in the annular rubber bag (24) along the radial direction, and the rubber partition plates (25) divide the interior of the annular rubber bag (24) into a plurality of chambers; the magnet (19) on the coating roller (26) is arranged inside the sliding block (27); the sliding block (27) is mutually connected with a linear sliding rail (28) arranged in the radial direction of the coating roller (26) in a sliding way; one end of the sliding block (27), which is far away from the annular rubber bag (24), is fixedly connected with the inner side end of the linear sliding rail (28) through a spring, and one end of the sliding block (27), which is close to the annular rubber bag (24), is fixedly connected with the inner wall of the outer edge of the annular rubber bag (24) through a pull rope (23).
3. The photovoltaic light reflecting film according to claim 1, wherein: a scraping plate (16) for scraping off the redundant adhesive liquid at the outer edge of the sponge sleeve (9) is arranged in the bonding box (1); one end of the scraping plate (16) close to the sponge sleeve (9) is obliquely and upwards arranged, and one end of the scraping plate (16) far away from the sponge sleeve (9) is fixedly connected with an opening of the columnar hollow heat-insulating cylinder (15); a square insertion rod (12) is fixedly arranged at the rear side end of the columnar hollow heat-insulating cylinder (15); the square insertion rod (12) is inserted into the insertion hole (30) in the rear side wall of the bonding box (1).
4. The photovoltaic light reflecting film according to claim 1, wherein: a rotating rod (32) is arranged in the bonding box (1) above the guide roller (3) and the second driven roller (4); the rear side end of the rotating rod (32) extends out of the rear side wall of the bonding box (1) and is fixedly connected with the first circular gear plate (13); a first circular gear disc (13) is also fixedly arranged on a rotating shaft of a driving motor fixedly connected with the coating roller (26), and the two groups of first circular gear discs (13) are in transmission connection through a gear belt (31); stirring blades (7) are uniformly arranged on the edge of the rotating rod (32) positioned in the bonding box (1); the stirring blades (7) are made of flexible materials.
5. The photovoltaic light reflecting film according to claim 1, wherein: a U-shaped groove body (22) is fixedly arranged at the lower port of the trapezoidal feed opening (29) at the bottom of the liquid storage barrel (10); the bottom of the U-shaped groove body (22) is designed into an arc-shaped structure, and liquid outlet holes (21) are uniformly formed in the bottom of the U-shaped groove body (22).
6. The photovoltaic light reflecting film according to claim 1, wherein: the bottom of the liquid storage barrel (10) is designed into an arc-shaped structure protruding downwards.
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| CN202110019228.5A CN112848196A (en) | 2021-01-07 | 2021-01-07 | Photovoltaic reflective film |
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| CN202110019228.5A CN112848196A (en) | 2021-01-07 | 2021-01-07 | Photovoltaic reflective film |
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| CN117469955A (en) * | 2023-12-26 | 2024-01-30 | 淄博超科氧化铝材料有限公司 | Alumina powder drying and storing device and application method thereof |
| CN117816487A (en) * | 2024-03-06 | 2024-04-05 | 淄博欣洋包装制品有限公司 | Device and method for coating film in composite plastic woven bag |
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