Heat insulation film and production equipment thereof

Abstract

The invention belongs to the technical field of heat insulation films, and particularly relates to a heat insulation film and production equipment thereof.The heat insulation film sequentially comprises a protective layer, a silver plating layer, a PET layer, a functional layer, a bonding layer and a release film from outside to inside, the protective layer is made of polyurethane, and the silver plating layer is formed by sputtering a metal material on a PET base film through magnetron sputtering equipment; the functional layer adopts a coating machine to coat the surface of the PET base film of the silver plating layer with coating liquid containing functional auxiliaries, the functional auxiliaries comprise an anti-UV absorbent, an infrared reflecting agent and an infrared absorbent, the bonding layer is a polyurethane adhesive, and the release film is a PET release film; pET is used as a base film, so that the heat insulation film has good light transmission performance, the functional layer acts on ultraviolet rays and infrared rays in a targeted mode, absorption and reflection of visible light are small, and solar heat and ultraviolet rays are effectively reflected and absorbed in combination with the silver plating layer; therefore, the heat insulation film has high visible light transmittance, ultraviolet blocking effect and weather resistance, and also has good heat dissipation effect.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of thermal insulation films, and particularly relates to a thermal insulation film and a production equipment thereof. BACKGROUND

[0002] With the intensification of global energy crisis and the continuous enhancement of people's environmental protection consciousness, the demand for thermal insulation products is increasing; as a functional film material capable of effectively blocking heat and ultraviolet rays, the thermal insulation film is widely used in the fields of automobiles, buildings, photovoltaics and the like.

[0003] In the field of automobiles, the traditional automobile glass film often has problems of poor thermal insulation effect and low ultraviolet blocking rate; this not only leads to high temperature in the car, affecting the riding comfort, but also causes the items in the car to accelerate aging due to long-term ultraviolet irradiation.

[0004] In the field of buildings, although the existing building glass film can reduce the transmission of solar heat to the indoor to a certain extent, the blocking effect of the near-infrared light is limited, leading to a still high indoor temperature and increasing the building energy consumption; in addition, the visible light transmittance of some glass films is low, affecting the lighting effect in the indoor.

[0005] In the field of photovoltaics, the traditional photovoltaic module film has low heat dissipation efficiency, so that the temperature of the photovoltaic module increases in the working process, thereby accelerating the power attenuation and aging of the module and reducing the service life and power generation efficiency of the photovoltaic module. SUMMARY

[0006] The purpose of the present application is to provide a thermal insulation film and a production equipment thereof, which can effectively reflect solar heat and ultraviolet rays and ensure good visible light transmittance and weather resistance.

[0007] Therefore, the present application provides a thermal insulation film, which comprises, from outside to inside, a protective layer, a silver plating layer, a PET layer, a functional layer, a bonding layer and a release film; The protective layer is made of polyurethane material; The silver plating layer is formed by sputtering metal material on the PET base film by using a magnetron sputtering device; The functional layer is formed by coating the coating liquid containing functional additives on the surface of the PET base film of the silver plating layer by using a coating machine, and the functional additives include anti-UV absorbent, infrared reflectant and infrared absorbent; The bonding layer is polyurethane adhesive; The release film is PET release film.

[0008] In the above technical solution, further: The total mass of the metal material in the silver plating layer accounts for 8%-15% of the total mass of the silver plating layer, and the metal material includes 70%-80% of silver and 20%-30% of nickel-chromium.

[0009] In the above technical solution, further: The functional layer comprises 50-70% of the acrylic resin and 30-50% of the functional additive, and the functional additive comprises 15-25% of the anti-UV absorber, 25-35% of the infrared reflector and 40-60% of the infrared absorber.

[0010] The application provides a production equipment for a heat insulation film, comprising: A magnetron sputtering film coating machine is used for sputtering metal materials on a PET base film to form a silver plating layer; A dispersion machine is used for dispersing and mixing the functional additive and the acrylic resin; A coating machine is used for coating the coating liquid mixed by the functional additive and the acrylic resin on the surface of the PET base film; A laminating machine is used for pressing the protective layer, the PET base film with the silver plating layer and the functional layer, the adhesive layer and the release film.

[0011] In the above technical solution, further, the coating machine comprises: A coating mechanism is used for coating the functional layer on the surface of the PET base film, and comprises a coating liquid feeding groove, a scraper assembly and a coating liquid recovery groove; A unwinding mechanism is located at the front side of the coating mechanism and is used for providing the PET base film for the coating mechanism; A winding mechanism is located at the rear side of the coating mechanism and is used for winding the PET base film after coating; A drying mechanism is located between the coating mechanism and the winding mechanism and is used for drying the coating liquid on the surface of the PET base film after coating; The scraper assembly is located at the side of the coating liquid feeding groove, and the coating liquid recovery groove is located below the coating liquid feeding groove and the scraper assembly.

[0012] In the above technical solution, further, the coating mechanism further comprises: A back roller is installed at the side of the coating liquid feeding groove and the scraper assembly and is used for sticking the PET base film to the coating liquid feeding groove and the scraper assembly; A discharge roller is provided with a discharge groove for installing the discharge roller on the side of the coating liquid feeding groove close to the back roller, and the discharge roller is rotationally connected with the inner wall of the coating liquid feeding groove; The surface of the discharge roller is provided with a plurality of accommodating grooves and a plurality of abutting portions abutting against the PET base film in the axial direction, and the discharge roller can rotate with the back roller, and in the process of rotation, the coating liquid in the coating liquid feeding groove is obtained through the accommodating grooves and is transferred to the surface of the PET base film.

[0013] In the above technical solution, further, the coating mechanism further comprises: Support shafts are installed at both ends of the axial direction of the discharge roller; The support frame is detachably installed at both ends of the coating liquid feeding groove along the axial direction of the discharging roller and is connected with the support shaft through bearings.

[0014] In the above technical solution, further, the coating mechanism further comprises: The rotating shaft is installed in the coating liquid feeding groove, and a first horizontal plate for installing the rotating shaft is arranged in the coating liquid feeding groove. The connecting sleeve is sleeved on the rotating shaft, and a plurality of stirring rods are arranged on the circumference of the connecting sleeve and rotate with the rotating shaft. The driving assembly is installed in the coating liquid feeding groove and is used to drive the rotating shaft to rotate, and a second horizontal plate for installing the driving assembly is arranged in the coating liquid feeding groove.

[0015] In the above technical solution, further, the driving assembly comprises: The ball nut is sleeved on the rotating shaft, and a screw rod part is formed on the end of the rotating shaft close to the driving assembly after penetrating through the first horizontal plate and is in transmission engagement with the ball nut. The guide rod is connected with the ball nut at one end and is provided with a driving disc at the other end penetrating through the second horizontal plate. The spring is installed between the driving disc and the second horizontal plate and is used for resetting the driving disc. The cam is installed above the driving disc through a cam shaft, the cam shaft is linked with the back roller, and the cam is used to drive the cam to rotate to push the driving disc. The two ends of the rotating shaft are respectively connected with the bottom wall of the coating liquid feeding groove and the bearing of the second horizontal plate.

[0016] In the above technical solution, further, the scraper assembly comprises: The mounting frame is connected to the side surface of the coating liquid feeding groove. The scraper is arranged at an acute angle between the PET base film and the other end of the scraper is fixedly connected to the mounting frame.

[0017] The present application has the following advantages: 1. By using PET as the base film, the scattering and absorption of visible light are weak, so that the heat insulation film itself has good light transmission performance, and the anti-UV absorber, infrared reflector and infrared absorber in the functional layer are targeted to act on ultraviolet light and infrared light, and the absorption and reflection of visible light are small, combined with the silver plating layer, which effectively reflects and absorbs solar heat and ultraviolet light, so that the heat insulation film has high visible light transmittance, ultraviolet blocking effect and weather resistance, and also has good heat dissipation effect.

[0018] 2. The silver plating layer is formed by sputtering metal material on the PET base film through a magnetron sputtering coating machine, the functional additives and the acrylic resin are uniformly mixed through a dispersing machine, then the functional additives are uniformly coated on the surface of the PET base film through a coating machine, thereby forming the functional layer, finally the protective layer, the PET base film with the silver plating layer and the functional layer, the adhesive layer and the release film are pressed through a laminating machine, the existing mature and simple operation laminating process is adopted, the production process is simplified to a certain extent, and the equipment investment and processing cost of part of links are reduced.

[0019] 3. The coating liquid is quantitatively fed in an appropriate amount through the setting of the discharge roller during coating, so that the coating liquid is prevented from being excessively coated on the PET base film, the coating liquid is prevented from being wasted seriously, and the scraper is prevented from being affected by abrasion and the like.

[0020] 4. The camshaft is linked with the back roller, so that the cam can rotate to drive the ball nut to rotate the rotating shaft, and then drive the stirring rod to rotate, thereby stirring the coating liquid feeding groove and reducing the settlement of the coating liquid. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the heat insulation film of the present application; Figure 2 is a structural schematic view of the coating mechanism of the present application; Figure 3 is an enlarged view of A in the present application Figure 2 . Figure 4 is a front view of the coating mechanism of the present application; Figure 5 is a sectional view of B-B in the present application Figure 4 . Figure 6 is an enlarged view of C in the present application Figure 5 . Figure 7 is a partial structural schematic view of the discharge roller of the present application; Figure 8 is an exploded view of the driving assembly of the present application; The marks in the figure are indicated as: 100, protective layer; 101, silver plating layer; 102, PET layer; 103, functional layer; 104, adhesive layer; 105, release film; 2, coating liquid feeding groove; 3, scraper assembly; 30, mounting frame; 31, scraper; 4, coating liquid recovery groove; 5, back roller; 6, discharge roller; 7, discharge slot; 8, containing groove; 9, abutting portion; 10, support shaft; 11, support; 12, rotating shaft; 13, first cross plate; 14, connecting sleeve; 15, stirring rod; 16, driving assembly; 160, ball nut; 161, screw rod portion; 162, guide rod; 163, driving disc; 164, spring; 165, cam; 166, cam shaft; 17, second cross plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0023] Embodiment 1 The present embodiment provides a heat insulation film, which comprises, from outside to inside, a protective layer 100, a silver plating layer 101, a PET layer 102, a functional layer 103, an adhesive layer 104, and a release film 105; The protective layer 100 is made of polyurethane material; The silver plating layer 101 is formed by sputtering metal material on the PET base film using a magnetron sputtering device; The functional layer 103 is formed by coating the coating liquid containing functional additives on the surface of the PET base film of the silver plating layer 101 using a coating machine, and the functional additives include anti-UV absorbent, infrared reflectant, and infrared absorbent; The adhesive layer 104 is polyurethane adhesive; The release film 105 is a PET release film 105; The total mass of the metal material in the silver plating layer 101 accounts for 8%-15% of the total mass of the silver plating layer 101, and the metal material includes 70%-80% of silver and 20%-30% of nickel-chromium; The functional layer 103 includes 50%-70% of acrylic resin and 30%-50% of functional additives, and the functional additives include 15%-25% of anti-UV absorbent, 25%-35% of infrared reflectant, and 40%-60% of infrared absorbent; PET is polyethylene terephthalate, and the anti-UV absorber is an ultraviolet absorber. The specific materials of the infrared reflector and the infrared absorber are conventional technologies known to those skilled in the art, and will not be described here. In addition, the hardness of the protective layer 100 is not less than 2H. Specifically, a suitable amount of hardness enhancer, such as nano-silicon dioxide and nano-aluminum oxide, can be added to the polyurethane formula, and the proportion of the curing agent and the introduction of the cross-linking agent, such as melamine formaldehyde resin and epoxy resin, can be adjusted, so that the thickness of the protective layer 100 is not less than 2H. The specific formula optimization and process control of the protective layer 100 are conventional mature technologies, and will not be described here.

[0024] As can be seen from the embodiment, the PET used as the base film has weak scattering and absorption effects on visible light, so that the heat insulation film itself has good light transmission performance. The anti-UV absorber, infrared reflector and infrared absorber in the functional layer 103 have specific effects on ultraviolet light and infrared light, and have small absorption and reflection on visible light. Combined with the silver plating layer 101, solar heat and ultraviolet light are effectively reflected and absorbed, so that the heat insulation film has high visible light transmittance, ultraviolet blocking effect and weather resistance, and also has good heat dissipation effect.

[0025] Embodiment 2: The embodiment provides a production equipment of a heat insulation film, which comprises: A magnetron sputtering coating machine is used to sputter metal materials on the PET base film to form a silver plating layer 101; A dispersion machine is used to disperse and mix the functional additives and the acrylic resin; A coating machine is used to coat the coating liquid of the mixed functional additives and acrylic resin on the surface of the PET base film; A layer 102 PET press is used to press the protective layer 100, the PET base film with the silver plating layer 101 and the functional layer 103, the adhesive layer 104 and the release film 105; The specific structures of the magnetron sputtering coating machine, the fan machine and the layer 102 PET press are conventional mature technologies known to those skilled in the art, and will not be described here.

[0026] It can be seen from the embodiment that the silver plating layer 101 is formed by sputtering metal material on the PET base film through the magnetron sputtering coating machine, the functional layer 103 is formed by uniformly mixing the functional additives and the acrylic resin through the dispersing machine, and then uniformly coating the functional additives on the surface of the PET base film through the coating machine, and finally the protective layer 100, the PET base film with the silver plating layer 101 and the functional layer 103, the adhesive layer 104 and the release film 105 are pressed through the layer 102 PET press. The existing mature and simple operation bonding process is adopted, the production process is simplified to a certain extent, and the equipment investment and processing cost of part of the links are reduced.

[0027] Embodiment 3 The embodiment provides a production equipment of a heat insulation film, in addition to the technical solutions of the above-mentioned embodiments, further has the following technical features, the coating machine comprises: The coating mechanism is used for coating the functional layer 103 on the surface of the PET base film, and comprises a coating liquid feeding groove 2, a scraper assembly 3 and a coating liquid recovery groove 4. The unwinding mechanism is located on the front side of the coating mechanism and is used for providing the PET base film for the coating mechanism. The winding mechanism is located on the rear side of the coating mechanism and is used for winding the PET base film after coating. The drying mechanism is located between the coating mechanism and the winding mechanism and is used for drying the coating liquid on the surface of the PET base film after coating. The scraper assembly 3 is located on the side of the coating liquid feeding groove 2, and the coating liquid recovery groove 4 is located below the coating liquid feeding groove 2 and the scraper assembly 3. Meanwhile, the specific structures of the unwinding mechanism, the winding mechanism and the drying mechanism are all mature technologies in the prior art, which can be known by those skilled in the art from the traditional coating equipment, and will not be described here.

[0028] It can be seen from the embodiment that the unwinding mechanism and the winding mechanism facilitate the conveying of the PET base film, the uniform coating on the surface of the PET base film is ensured, the drying mechanism facilitates the evaporation of the solvent of the coating liquid after coating, the curing of the coating layer 102 PET is promoted, and the uniformity of the coating on the PET base film can be effectively ensured after the coating liquid is fed on the PET base film and then scraped off by the scraper assembly 3. The coating liquid recovery groove 4 facilitates the recovery of the excess coating liquid, the recovered coating liquid is reused after subsequent treatment, the production cost is effectively controlled, and excessive waste of the coating liquid is avoided.

[0029] Embodiment 4 The embodiment provides a production equipment of a heat insulation film, in addition to the technical solutions of the above-mentioned embodiments, further has the following technical features, the coating mechanism further comprises: The back roller 5 is installed on the side of the coating liquid feeding groove 2 and the scraper assembly 3, and is used to press the PET base film close to the coating liquid feeding groove 2 and the scraper assembly 3; The discharge roller 6 is provided with a discharge groove for installing the discharge roller 6 on the side of the coating liquid feeding groove 2 close to the back roller 5, and the discharge roller 6 is rotationally connected with the inner wall of the coating liquid feeding groove 2; The surface of the discharge roller 6 is provided with a plurality of accommodating grooves 8, and a plurality of abutting portions 9 are arranged along the axial direction to abut against the PET base film, and the discharge roller 6 can rotate with the back roller 5, and in the process of rotation, the coating liquid in the coating liquid feeding groove 2 is obtained through the accommodating grooves 8 and transferred to the surface of the PET base film; Meanwhile, the back roller 5 is also connected with a driving device for its rotation, and the stable conveying of the PET base film is ensured, and the specific structures of the back roller 5 and the driving device are both mature technologies known to those skilled in the art from traditional coating equipment, and will not be described here.

[0030] As can be seen from the embodiment, by using the discharge roller 6 during coating, the feeding of the coating liquid is appropriately and quantitatively fed, avoiding excessive coating of the coating liquid on the PET base film, which can easily cause wear and tear of the scraper 31 and other influences, and serious waste of the coating liquid; And by providing the abutting portion 9 on the discharge roller 6, the back roller 5 can drive the discharge roller 6 to rotate when rotating, so as to realize appropriate and quantitative feeding of the coating liquid, and avoid excessive coating liquid on the PET base film, which can affect the subsequent scraper 31 and the recycling of the coating liquid; Therefore, by designing the accommodating grooves 8, the needs of coating different PET base films can be met, the appropriate feeding of the coating liquid can be ensured, and excessive feeding can be avoided, which can cause a large amount of waste of the coating liquid and increase the environmental protection pressure and energy consumption cost of the recycled coating liquid.

[0031] Embodiment 5: The embodiment provides a production equipment of a heat insulation film, in addition to the technical solutions of the above-mentioned embodiments, further comprising: The support shaft 10 is installed at both ends of the axial direction of the discharge roller 6; The bracket 11 is detachably installed at both ends of the axial direction of the discharge roller 6 of the coating liquid feeding groove 2, and is connected between the support shaft 10 through a bearing; The bracket 11 and the coating liquid feeding groove 2 can be fastened by bolts, and the support shaft 10 and the discharge roller 6 adopt an integrated structure.

[0032] It can be seen from the embodiment that the discharge roller 6 is supported by the support 11 and the support shaft 10 connected with the bearing, which facilitates the installation and disassembly of the discharge roller 6, facilitates the replacement and maintenance of the discharge roller 6, and enables the discharge roller 6 to be replaced for different production models of the heat insulation film, ensuring the appropriate supply of the coating liquid, avoiding the mismatch between the containing groove 8 and the required amount of coating liquid, reducing the influence on the heat insulation film product, and being convenient to replace, saving time and effort. Meanwhile, the bearing connection improves the low friction effect of the rotation of the discharge roller 6, and reduces the risk of jamming.

[0033] Embodiment 6: The embodiment provides a heat insulation film production equipment, in addition to the technical solutions of the above-mentioned embodiments, further having the following technical features, the coating mechanism further comprises: The rotating shaft 12 is installed in the coating liquid feeding groove 2, and the first horizontal plate 13 for installing the rotating shaft 12 is arranged in the coating liquid feeding groove 2. The connecting sleeve 14 is sleeved on the rotating shaft 12, and a plurality of stirring rods 15 are arranged on the circumference of the connecting sleeve 14 and rotate with the rotating shaft 12. The driving assembly 16 is installed in the coating liquid feeding groove 2 and is used to drive the rotating shaft 12 to rotate, and the second horizontal plate 17 for installing the driving assembly 16 is arranged in the coating liquid feeding groove 2. Among them, the connecting sleeve 14 and the rotating shaft 12 are fixedly connected, such as bolt fastening, and the stirring rod 15 and the connecting sleeve 14 adopt an integral structure; Meanwhile, the rotating shaft 12, the connecting sleeve 14 and the driving assembly 16 are arranged transversely.

[0034] It can be seen from the embodiment that the driving assembly 16 drives the rotating shaft 12 to rotate, so that the stirring rod 15 stirs the coating liquid, thereby effectively avoiding the settlement of the coating liquid and reducing the influence on the coating quality, and the installation of the first horizontal plate 13 and the second horizontal plate 17 can improve the structural strength and stability, and ensure the stable stirring of the coating liquid.

[0035] Embodiment 7: The embodiment provides a heat insulation film production equipment, in addition to the technical solutions of the above-mentioned embodiments, further having the following technical features, the driving assembly 16 comprises: The ball nut 160 is sleeved on the rotating shaft 12, and the end of the rotating shaft 12 close to the driving assembly 16 penetrates the first horizontal plate 13 to form a lead screw part 161 in transmission engagement with the ball nut 160; The guide rod 162 is connected with the ball nut 160 at one end and is provided with a driving disc 163 at the other end penetrating the second horizontal plate 17, and four are arranged on the circumference. A spring 164 is arranged between the driving disc 163 and the second horizontal plate 17 and is used for resetting the driving disc 163; A cam 165 is arranged above the driving disc 163 through a cam shaft 166, the cam shaft 166 is connected with the back roller 5 and is used for driving the cam 165 to rotate to push the driving disc 163; The two ends of the rotating shaft 12 are respectively connected with the bottom wall of the coating liquid feeding groove 2 and the bearing of the second horizontal plate 17. Meanwhile, the specific structure of the ball nut 160 is a mature technology, and the main body of the ball nut 160 is provided with an annular protrusion, a through hole is formed in the annular protrusion, one end of the guide rod 162 is fixedly connected with the main body of the ball nut 160 through the through hole, and a nut fastening can be used, and the other end of the guide rod 162 and the driving disc 163 can be connected through an installation hole formed in the driving disc 163 and an interference fit between the guide rod 162 and the inner wall of the installation hole. Moreover, the linkage between the cam shaft 166 and the back roller 5 can be achieved by using synchronous wheels and synchronous belts or by using gear direct transmission meshing, which are all mature technologies known to those skilled in the art from traditional transmission modes, and thus will not be described here.

[0036] As can be seen from the embodiment, by linking the cam shaft 166 with the back roller 5, no additional driving device is needed, the manufacturing cost is reasonably controlled, and by following the rotation of the cam shaft 166, the cam 165 intermittently pushes the driving disc 163, thereby driving the ball nut 160 to move linearly, and the rotating shaft 12 is driven to rotate by the screw rod part 161, thereby driving the stirring rod 15 to stir the coating liquid to prevent the coating liquid from settling. The spring 164 can lift the driving disc 163 after the cam 165 removes the abutting push of the driving disc 163, thereby driving the ball nut 160 to move upwards, driving the rotating shaft 12 and the stirring rod 15 to rotate reversely, and by the gap type forward and reverse rotation of the rotating shaft 12 and the stirring rod 15, the stirring of the coating liquid is enhanced, and the settling of the coating liquid is further avoided.

[0037] Embodiment 8: The embodiment provides a production equipment of a heat insulation film, in addition to the technical solutions of the above-mentioned embodiments, further has the following technical features, the scraper assembly 3 comprises: The mounting frame 30 is connected to the side of the coating liquid feeding groove 2. The scraper 31 is arranged at an acute angle between the PET base film and the other end of the scraper 31 is fixedly connected to the mounting frame 30. The acute angle between the scraper 31 and the PET base film refers to the acute angle between the blade edge of the scraper 31 and the surface of the PET base film.

[0038] The embodiment can be seen that by connecting the scraper 31 to the mounting frame 30, and by fixing the mounting frame 30 to the side of the coating liquid feeding groove 2, it is convenient to smooth the coating liquid in time after the PET base film is fed, to ensure the uniformity of the coating liquid on the surface of the PET base film, and to avoid the difficulty of scraping by the scraper 31 due to the evaporation of the solvent caused by the concave-convex surface on the surface of the PET base film caused by the feeding of the containing groove 8.

[0039] The embodiments of the present application are described above in combination with the drawings, and the embodiments and the features in the embodiments in the present application can be combined with each other without conflict, the present application is not limited to the above specific embodiments, the above specific embodiments are only illustrative, but not limited, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims, which all belong to the protection of the present application.

Claims

1. A thermal insulation film, characterized in that: From the outside to the inside, it includes a protective layer (100), a silver-plated layer (101), a PET layer (102), a functional layer (103), an adhesive layer (104), and a release film (105); The protective layer (100) is made of polyurethane; The silver-plated layer (101) is formed by sputtering a metal material on the PET base film using a magnetron sputtering device; The functional layer (103) is coated on the surface of the PET base film of the silver-plated layer (101) by a coating machine with a coating liquid containing a functional auxiliary agent, and the functional auxiliary agent includes an anti-UV absorber, an infrared reflector, and an infrared absorber; The bonding layer (104) is a polyurethane adhesive; The release film (105) is a PET release film (105).

2. The thermal insulation film according to claim 1, characterized in that: The total mass of the metal material in the silver-plated layer (101) accounts for 8%-15% of the total mass of the silver-plated layer (101), and the metal material comprises 70%-80% of silver and 20%-30% of nickel-chromium.

3. The thermal insulation film according to claim 1, characterized in that: The functional layer (103) comprises 50%-70% of acrylic resin and 30%-50% of functional additives, and the functional additives comprise 15%-25% of anti-UV absorbers, 25%-35% of infrared reflectors, and 40%-60% of infrared absorbers.

4. A production device for the thermal insulation film according to any one of claims 1 to 3, characterized in that: include: A magnetron sputtering coating machine, used for sputtering a metal material on a PET base film to form a silver coating layer (101); Disperser, used to disperse and mix functional additives with acrylic resin; A coating machine is used to apply a coating solution containing a mixture of functional additives and acrylic resin onto the surface of the PET base film; A laminating machine is used for laminating a protective layer (100), a PET base film with a silver-plated layer (101) and a functional layer (103), an adhesive layer (104), and a release film (105).

5. The production equipment of thermal insulation film according to claim 4, characterized in that: The coating machine comprises: A coating mechanism, used for coating a functional layer (103) on the surface of a PET base film, and comprising a coating liquid feeding trough (2), a scraper assembly (3) and a coating liquid recovery trough (4); The unwinding mechanism is located in front of the coating mechanism and is used to provide the PET base film to the coating mechanism; The winding mechanism is located at the rear side of the coating mechanism and is used to wind up the coated PET base film; The drying mechanism is located between the coating mechanism and the winding mechanism and is used to dry the coating liquid on the surface of the PET base film after coating; The scraper assembly (3) is located on the side of the coating liquid feeding trough (2), and the coating liquid recovery trough (4) is located below the coating liquid feeding trough (2) and the scraper assembly (3).

6. The production equipment of thermal insulation film according to claim 5, characterized in that: The coating mechanism also includes: A back roller (5) is installed on the side of the coating liquid feeding trough (2) and the scraper assembly (3), and is used to bring the PET base film close to the coating liquid feeding trough (2) and the scraper assembly (3); A discharge roller (6), wherein a discharge slot (7) for mounting the discharge roller (6) is provided on a side of the coating liquid feeding trough (2) close to the back roller (5), and the discharge roller (6) is rotatably connected to the inner wall of the coating liquid feeding trough (2); The discharge roller (6) is provided with a plurality of receiving grooves (8) on its circumference and a plurality of abutting portions (9) for abutting the PET base film along its axial direction, and is capable of rotating along the back roller (5). During the rotation, the discharge roller (6) obtains the coating liquid in the coating liquid feeding trough (2) through the receiving grooves (8) and transfers the coating liquid to the surface of the PET base film.

7. The production equipment of thermal insulation film according to claim 6, characterized in that: The coating mechanism also includes: A support shaft (10) is mounted on both axial ends of the discharge roller (6); The bracket (11) is detachably mounted on both ends of the coating liquid feeding trough (2) along the axial direction of the discharge roller (6), and is connected to the support shaft (10) via a bearing.

8. The production equipment of thermal insulation film according to claim 6, characterized in that: The coating mechanism also includes: A rotating shaft (12) is installed in the coating liquid feeding trough (2), and a first horizontal plate (13) for installing the rotating shaft (12) is provided in the coating liquid feeding trough (2); A connecting sleeve (14) is sleeved on the rotating shaft (12) and has a plurality of stirring rods (15) arranged around the circumference thereof and rotates along with the rotating shaft (12); The driving assembly (16) is installed in the coating liquid feeding trough (2) and is used to drive the rotating shaft (12) to rotate. A second horizontal plate (17) for installing the driving assembly (16) is provided in the coating liquid feeding trough (2).

9. The production equipment of thermal insulation film according to claim 8, characterized in that: The drive assembly (16) comprises: The ball nut (160) is sleeved on the rotating shaft (12), and one end of the rotating shaft (12) close to the driving assembly (16) passes through the first transverse plate (13) to form a screw rod portion (161) that is in transmission engagement with the ball nut (160); A guide rod (162), one end of which is connected to the ball nut (160), and the other end of which passes through the second transverse plate (17) and is provided with a drive disc (163); A spring (164) is installed between the drive disk (163) and the second transverse plate (17) and is used to reset the drive disk (163); A cam (165) is installed above the driving disk (163) by providing a cam shaft (166), and the cam shaft (166) is linked with the back roller (5) and is used to drive the cam (165) to rotate to push the driving disk (163); Wherein, both ends of the rotating shaft (12) are respectively connected to the bottom wall of the coating liquid feeding trough (2) and the bearing of the second horizontal plate (17).

10. The production equipment of thermal insulation film according to claim 5, characterized in that: The scraper assembly (3) comprises: A mounting frame (30) connected to the side of the coating liquid feeding trough (2); The scraper (31) has one end close to the PET base film and is arranged at an acute angle with the PET base film, and the other end is fixedly connected to the mounting frame (30).

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