Film compounding system

Abstract

The invention relates to the field of thin film resin production, and discloses a thin film compounding system which comprises a rack, a thin film tensioning assembly, a coating face processing mechanism and a resin coating mechanism, the thin film tensioning assembly comprises a discharging unit and a collecting unit, and a thin film base material is formed between the discharging unit and the collecting unit through thin film tensioning; the coating surface treatment mechanism is arranged between the discharging unit and the receiving unit and comprises a gluing unit for coating a film base material with UV glue, a drying unit for drying the UV glue and a light curing unit for carrying out light curing on the UV glue; a film base material sequentially passes through the gluing unit, the drying unit and the light curing unit, a glue layer is attached to the surface of the film base material, and after the glue layer is formed, the film base material reaches the resin coating mechanism to complete resin coating work. The adhesive property is improved, the adjustment difficulty of the coating thickness is simplified, and meanwhile, the deformation of a thin film in the coating process is reduced.

Description

Technical Field

[0001] The invention relates to the field of film resin production, in particular to a film composite system. Background Art

[0002] In thin film composite technology, it is usually necessary to coat resin on a film substrate to form a composite material. Such materials are widely used in packaging, construction, electronics and other fields. The traditional thin film composite process mainly includes film tensioning, resin coating and subsequent curing treatment. However, there are some problems with the existing thin film composite technology, especially in the resin coating process, how to ensure the good combination of the film substrate and the resin has become a major challenge. Summary of the invention

[0003] The present invention aims to provide a thin film composite system to improve the bonding problem between a thin film substrate and a resin.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a thin film composite system, including a frame, a film tensioning assembly, a coating surface processing mechanism and a resin coating mechanism, the film tensioning group includes a discharge unit and a receiving unit, and the film is tensioned between the discharge unit and the receiving unit to form a thin film substrate; the coating surface processing mechanism is arranged between the discharge unit and the receiving unit, including a gluing unit for coating UV glue on the thin film substrate, a drying unit for drying the UV glue and a light curing unit for light curing the UV glue; the thin film substrate passes through the gluing unit, the drying unit and the light curing unit in sequence and has a glue layer attached to the surface, and after the glue layer is formed, it reaches the resin coating mechanism to complete the resin coating work.

[0005] Beneficial effects: Improve adhesion performance: By coating UV glue on the surface of the film substrate, and then drying and light curing, a stable glue layer is formed, providing a flat and firm surface, which is conducive to the uniform distribution of the subsequent resin coating. Simplify coating thickness adjustment: By adjusting the parameters of each unit in the coating surface processing mechanism, the adjustment process of the resin coating thickness can be simplified, and complex multi-factor adjustment is no longer required, which simplifies the operation process and improves production efficiency. Reduce deformation: By first forming a stable glue layer on the surface of the film substrate and then applying the resin, the deformation of the film substrate during the coating process can be reduced.

[0006] Furthermore, the gluing unit includes a corona part and a gluing part, and the film substrate passes through the corona part and the gluing part in sequence. The corona part is used to perform corona treatment on the film substrate. The gluing part includes a glue tank storing glue, and a transition roller is rotatably arranged on the glue tank, and the transition roller is bonded to the film substrate.

[0007] Beneficial effects: Enhanced adhesion: The surface roughness of the film substrate is increased through corona treatment, which enhances the adhesion between the UV glue and the film substrate. Uniform glue coating: The transition stick fits the film substrate to ensure that the UV glue is evenly coated on the film substrate, improving the uniformity of glue coating.

[0008] Further, the drying unit includes a drying box, a drying furnace is provided at the upper end of the drying box, the drying furnace can provide heating for the drying box to dry the film, a photolysis device is provided at the upper end of the drying box, the photolysis device is used to process the organic gas generated by drying in the drying box, a feed port is provided on one side of the drying box, a discharge port is provided at the end of the drying box away from the feed port, a plurality of tensioning rollers are equidistantly provided inside the drying box, the tensioning rollers are used to keep the film flat during drying, slide grooves are symmetrically provided on the inner wall of the drying box, a traction assembly is provided between the two slide grooves, the traction assembly includes two rollers, a mounting block and traction rollers, the two rollers are respectively slidably arranged in each slide groove, the two mounting blocks are respectively arranged at opposite ends of the two rollers, a motor connected to the corresponding rollers is provided in the mounting block, the two traction rollers are commonly arranged at opposite ends of the two mounting blocks, the two traction rollers are used to clamp the film, the limiting grooves are symmetrically provided on the inner wall of the drying box, a limiting block is provided at one end of each mounting block close to the limiting groove, and the limiting block is slidably arranged in the limiting groove.

[0009] Beneficial effects: 1. Keep the film flat: keep the film flat during the drying process through the tension roller and the traction component to prevent the film from wrinkling; 2. Treat waste gas: treat the organic waste gas generated during the drying process through the photolysis equipment to reduce environmental pollution; 3. Stable traction: ensure the smooth operation of the film during the drying process through the traction roller driven by the motor; 4. Air disturbance: since the traction component can reciprocate in the drying box, when the traction is completed, the traction component can also be driven by the motor to reciprocate in the drying box, so that the film rises and falls in the drying box, disturbs the gas in the drying box, accelerates the volatilization process of the organic waste gas, and reduces the drying time.

[0010] At the same time, when the traction assembly reciprocates in the drying box, when the traction assembly approaches the tensioning roller, the film will inevitably separate from the tensioning roller.

[0011] Furthermore, the coating mechanism includes a die head, which includes a shell, a first adjusting member, a second adjusting member and a third adjusting member. A first chamber, a second chamber and a third chamber are arranged in the shell, and a coating lip is arranged on the side of the shell away from the first chamber; the first chamber is connected to the extruder discharge port; the second chamber is arranged between the first chamber and the third chamber, and is respectively connected to the first chamber and the third chamber; the third chamber is connected to the coating lip, and the first adjusting member, the second adjusting member and the third adjusting member are respectively slidably arranged in the first chamber, the second chamber and the third chamber.

[0012] Beneficial effects: Precisely control coating thickness: By adjusting the positions of the first adjusting member, the second adjusting member and the third adjusting member, the flow rate of the resin can be precisely controlled, thereby adjusting the coating thickness. Improve coating uniformity: The design of the die head allows the resin to flow out evenly through the coating lip, improving coating uniformity.

[0013] Furthermore, a heating block is fixed outside the body.

[0014] Beneficial effects: Improve resin fluidity: The temperature of the resin during coating is maintained by the heating block, which improves the fluidity of the resin and ensures the coating quality.

[0015] Further, the trimming unit comprises two cutters, and the interval between the two cutters is the same as the length of the coating lip.

[0016] Benefits: Ensure clean edges: The trimming unit removes excess resin from the edge of the film substrate to ensure clean edges of the finished product.

[0017] Furthermore, the trimming unit also includes a discharge pipe, which includes a feed port and a discharge port. An air inlet pipe is fixed to the side of the discharge pipe, and a fan is fixed to the air inlet pipe. The air outlet of the fan is the same as the discharge port of the discharge pipe.

[0018] Beneficial effects: Waste collection: The trimmed film waste is collected through the discharge pipe and fan to avoid waste scattering and keep the production line clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of an embodiment of the present invention;

[0020] Figure 2 A three-dimensional diagram of the die head of Example 1 of the present invention;

[0021] Figure 3 1 is an exploded view of the die head of Example 1 of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the die head in Example 1 of the present invention;

[0023] Figure 5 This is a three-dimensional diagram of a drying box according to Embodiment 2 of the present invention;

[0024] Figure 6 This is a three-dimensional diagram of the traction component of Example 2 of the present invention. DETAILED DESCRIPTION

[0025] The following is further described in detail through specific implementation methods:

[0026] The reference numerals in the drawings of the specification include: a material discharge roller 11, a material discharge tensioning roller 111, a material collection roller 12, a material collection tensioning roller 121, a first turning roller 211, a second turning roller 212, a third turning roller 213, a fourth turning roller 214, a transition roller 221, a glue box 222, an oven body 31, an exhaust pipe 311, a limiting groove 3121, a slide groove 3122, a limiting block 3131, a roller 3132, a first adjustment roller 321, a second adjustment roller 322, a photolysis unit 33, and a cooling roller body 41. , the third adjusting rod 411, the fourth adjusting rod 412, the feeding pipe 511, the die head 5, the shell body 51, the first chamber 5131, the second chamber 5132, the third chamber 5133, the connecting throat 5134, the mounting groove 512, the first end cover 521, the first blocking piece 5211, the second blocking piece 5212, the third blocking piece 5213, the second end cover 522, the first fastener 531, the second fastener 532, the first adjusting piece 541, the second adjusting piece 542, and the third adjusting piece 543.

[0027] Example 1

[0028] Embodiment 1 is basically as attached Figure 1-3 As shown, Figure 1-3 The film composite system shown is used for coating resin on a film substrate, and includes a frame, a film tensioning assembly, a coating surface processing mechanism and a resin coating mechanism. The film tensioning group includes a discharge roller 11, a discharge tensioning roller 111, a collection roller 12 and a collection tensioning roller 121. The discharge roller 11, the discharge tensioning roller 111, the collection roller 12 and the collection tensioning roller 121 are all rotatably arranged on the frame. The film is tensioned between the discharge roller 11 and the collection roller 12 and is tightened by the discharge tensioning roller 111 and the collection tensioning roller 121 to form a film substrate.

[0029] The receiving roller 12 is connected to a belt drive. When working, the belt drive is used to drive the receiving roller 12 to rotate, thereby driving the unloading roller 11, the unloading tensioning roller 111 and the receiving tensioning roller 121 to rotate, so that the film moves from the unloading roller 11 to the receiving roller 12.

[0030] The coating surface treatment mechanism is arranged on the frame between the unloading tensioning roller 111 and the receiving tensioning roller 121, and includes a corona section, a gluing section, a drying section and a photolysis section 33 in sequence. The corona section is provided with a corona generator. When the film substrate passes through the corona section, the corona generator performs corona treatment on the gluing surface to increase the roughness of the surface of the film substrate.

[0031] The gluing part includes a first steering roller 211, a second steering roller 212, a third steering roller 213 and a glue groove. The film substrate is cooperated with the first steering roller 211, the second steering roller 212 and the third steering roller 213 so that the top surface of the film substrate passes through the glue groove. Glue circulates in the glue groove. The circulation can be achieved by a circulating pump. In this scheme, the glue is UV glue. A transition roller 221 is rotatably arranged on the glue groove. The transition roller 221 is bonded to the film substrate. The surface of the substrate treated by the corona part is bonded to the transition roller 221. Therefore, the glue in the glue groove is coated on the top surface of the substrate through the rotation of the transition roller 221, thereby preventing the glue from entering the bottom surface that does not need to be coated with glue, thereby reducing the loss of glue.

[0032] The drying part includes a drying box body, a first adjusting rod 321, a second adjusting rod 322 and a heating element. The drying box body includes a first shell and a second shell. The first shell is fixedly arranged on the frame, and the second shell is slidably arranged on the frame. The heating element is arranged in the first shell. The top surface of the second shell is provided with an air outlet, and the air outlet is connected to the exhaust pipe 311. In this embodiment, the exhaust pipe 311 is a corrugated pipe, and the free end of the corrugated pipe is connected to the exhaust gas treatment device.

[0033] A channel is reserved between the first shell and the second shell for the film substrate to pass through. The first adjustment rod 321 and the second adjustment rod 322 are rotatably arranged on both sides of the channel, so that the film substrate passes through the channel in mid-air to avoid the glue coated on the top surface of the film substrate from scratching the drying box body and affecting the uniformity of the glue.

[0034] The photolysis section 33 is provided with a UV light curing treatment device, which is fixed to the frame between the drying section and the coating mechanism by bolts, and is used to perform a light curing treatment on the glue layer after drying.

[0035] During processing, the film substrate passes through the corona section, the glue coating section, the drying section and the photolysis section 33 in sequence. When passing through the corona section, the corona treatment is used to increase the roughness of the substrate surface to facilitate the subsequent adhesion of glue. When passing through the glue coating section, the transition roller 221 is used to brush the glue in the glue groove onto the surface of the substrate to avoid the glue sticking to the side of the substrate that does not need to be coated with glue. Then it enters the drying section. When the glue attached to the surface passes through the drying section, the glue is heated and dried by the drying section, thereby reducing the content of organic solvents in the glue and increasing the viscosity of the glue. On the one hand, the adhesion performance of the glue is improved. At the same time, it can also avoid the organic solvents in the glue from generating bubbles during the photocuring process, affecting the transparency of the finished product, and reducing the curing time of the glue. The film substrate passes through the corona section, the glue coating section, the drying section and the photolysis section 33 in sequence, so that a layer of cured glue adheres to the surface of the film substrate.

[0036] The resin coating assembly includes a die 5 and a coating roller, such as Figure 2As shown, the die head 5 includes a shell body, on which a feed pipe 511 is fixedly arranged, and a first chamber 5131, a second chamber 5132 and a third chamber 5133 are arranged in the shell body, and a coating lip is arranged on the side of the shell body away from the first chamber 5131; the first chamber 5131 is connected with the discharge pipe 511; the second chamber 5132 is arranged between the first chamber 5131 and the third chamber 5133, and is respectively connected with the first chamber 5131 and the third chamber 5133; the third chamber 5133 is connected with the coating lip.

[0037] like Figure 2 As shown, the shell includes a shell body 51, a first end cover 521, a second end cover 522, a first fastener 531 and a second fastener 532, the first end cover 521 is fixed with a first blocking member 5211, a second blocking member 5212 and a third blocking member 5213, the second end cover 522 is slidably provided with a first adjusting member 541, a second adjusting member 542 and a third adjusting member 543, the structures of the first adjusting member 541, the second adjusting member 542 and the third adjusting member 543 are basically the same, and all include an adjusting member body and a driving rod, the driving rod is welded to the adjusting member body, the adjusting member body is slidably arranged inside the shell, the driving rod is slidably connected to the second end cover 522, the free end of the driving rod is connected with a telescopic driving member, and the output shaft of the telescopic driving member is welded to the driving rod.

[0038] During assembly, first adhere the first blocking piece 5211, the second blocking piece 5212 and the third blocking piece 5213 to the first end cover 521, and extend the first blocking piece 5211, the second blocking piece 5212 and the third blocking piece 5213 into the shell body 51, and at the same time put the first adjusting piece 541, the second adjusting piece 542 and the third adjusting piece 543 into the shell body 51, then fix the shell body 51 to the first fastener 531 and the second fastener 532 by bolts, finally, pass the driving rod through the second end cover 522, and fix the first end cover 521 and the second end cover 522 to the second fastener 532 by bolts to complete the assembly of the die head 5.

[0039] The structures of the first chamber 5131, the second chamber 5132 and the third chamber 5133 are substantially the same. The volumes of the first chamber 5131 and the second chamber 5132 are adjusted by the relative positions of the first adjusting member 541, the second adjusting member 542 and the shell body 51. Meanwhile, the coating width of the coating lip is determined by the relative position of the third adjusting member 543 and the shell body 51. The resin melt flows through the first chamber 5131, the second chamber 5132 and the third chamber 5133 in sequence, and flows out through the coating lip to be coated on the surface of the film substrate.

[0040] like Figure 3As shown, a connecting throat 5134 is provided between the first chamber 5131 and the second chamber 5132, and between the second chamber 5132 and the third chamber 5133. The connecting throat 5134 is designed to be small in the middle and large at both ends. The lower parts of the cross sections of the first chamber 5131 and the second chamber 5132 both shrink toward the connecting throat 5134. With the help of the special setting of the connecting throat 5134, the molten body can fill the first chamber 5131, the second chamber 5132 and the third chamber 5133 in turn, and then by adjusting the volume of the first chamber 5131 and the second chamber 5132, the flow rate of the molten body flowing out of the coating lip is adjusted, and finally the thickness of the resin coating is adjusted.

[0041] The coating roller includes a cooling roller body 41, a third adjusting roller 411 and a fourth adjusting roller 412. The cooling roller body 41, the third adjusting roller 411 and the fourth adjusting roller 412 are all rotatably arranged on a frame. The cooling roller body 41 is provided with a heat exchange pipe, and a cooling medium circulates in the heat exchange pipe. The temperature range of the cooling medium is 15-20°C. The coating roller is rotatably arranged below the die head 5 and a gap is reserved between the coating lip. The film substrate passes through the gap and fits the coating roller, so that the resin melt coated on the film substrate is cooled by the heat transfer of the cooling medium to avoid damage to the film substrate caused by the high-temperature resin melt. During installation, ensure that the rotation axes of the cooling roller body 41, the third adjusting roller 411 and the fourth adjusting roller 412 are parallel to each other, and at the same time ensure that the horizontal plane where the rotation axes of the third adjusting roller 411 and the fourth adjusting roller 412 are located is lower than the horizontal plane where the rotation axis of the cooling roller body 41 is located, so as to ensure that the film fits the side of the cooling roller body 41 as much as possible, thereby ensuring the cooling effect of the coating roller.

[0042] Example 2

[0043] On the basis of Example 1, Figure 5 , Figure 6 As shown, the drying unit also includes a traction assembly, and the inner wall of the drying box is symmetrically provided with slide grooves 3122, and a traction assembly is commonly provided between the two slide grooves 3122, and the traction assembly includes two rollers 3132, a mounting block and a traction roller, and the two rollers 3132 are respectively slidably arranged in each slide groove 3122, and the two mounting blocks are respectively arranged at the opposite ends of the two rollers 3132, and a motor connected to the corresponding rollers 3132 is arranged in the mounting block, and the two traction rollers are commonly arranged at the opposite ends of the two mounting blocks, and the two traction rollers are used to clamp the film, and the inner wall of the drying box is symmetrically provided with limit grooves 3121, and each mounting block is provided with a limit block 3131 at one end close to the limit groove 3121, and the limit block 3131 is slidably arranged in the limit groove 3121. In this embodiment, the limit block 3131 is a ball.

[0044] Example 3

[0045] Based on Example 1,

[0046] The above is only an embodiment of the present invention, and common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that the technical means for solving the problems in the above-mentioned embodiments of the present invention can be used in combination to solve multiple technical problems at the same time. For those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A thin film composite system for coating a resin on a thin film substrate, characterized in that: It includes a frame, a film tensioning assembly, a coating surface processing mechanism and a resin coating mechanism. The film tensioning group includes a feeding unit and a receiving unit. The film is tensioned to form a film substrate between the feeding unit and the receiving unit. The coating surface processing mechanism is arranged between the feeding unit and the receiving unit, and includes a gluing unit for coating the film substrate with UV glue, a drying unit for drying the UV glue and a light curing unit for light curing the UV glue. The film substrate passes through the gluing unit, the drying unit and the light curing unit in sequence and has a glue layer attached to the surface. After the glue layer is formed, it reaches the resin coating mechanism to complete the resin coating work.

2. The thin film composite system according to claim 1, characterized in that: The gluing unit includes a corona part and a gluing part. The film substrate passes through the corona part and the gluing part in sequence. The corona part is used to perform corona treatment on the film substrate. The gluing part includes a glue tank storing glue. A transition roller is rotatably arranged on the glue tank. The transition roller is bonded to the film substrate.

3. The thin film composite system according to claim 2, characterized in that: The drying unit comprises a drying box, a drying furnace is arranged at the upper end of the drying box, the drying furnace can provide heating for the drying box so as to dry the film, a photolysis device is arranged at the upper end of the drying box, the photolysis device is used to process the organic gas generated by drying in the drying box, a feed port is arranged on one side of the drying box, a discharge port is arranged at the end of the drying box away from the feed port, a plurality of tensioning rollers are arranged equidistantly inside the drying box, the tensioning rollers are used to keep the film flat during drying, a slide groove is symmetrically arranged on the inner wall of the drying box, a traction assembly is arranged between the two slide grooves, the traction assembly comprises two rollers, a mounting block and a traction roller, the two rollers are respectively slidably arranged in each slide groove, the two mounting blocks are respectively arranged at the opposite ends of the two rollers, a motor connected to the corresponding rollers is arranged in the mounting block, the two traction rollers are jointly arranged at the opposite ends of the two mounting blocks, the two traction rollers are used to clamp the film, the limiting grooves are symmetrically arranged on the inner wall of the drying box, a limiting block is arranged at one end of each mounting block close to the limiting groove, and the limiting block is slidably arranged in the limiting groove.

4. The thin film composite system according to claim 3, characterized in that: The coating mechanism includes a die head, which includes a shell, a first adjusting member, a second adjusting member and a third adjusting member. The shell is provided with a first chamber, a second chamber and a third chamber, and a coating lip is provided on the shell side away from the first chamber; the first chamber is connected to the discharge port of the extruder; the second chamber is arranged between the first chamber and the third chamber, and is respectively connected to the first chamber and the third chamber; the third chamber is connected to the coating lip, and the first adjusting member, the second adjusting member and the third adjusting member are respectively slidably arranged in the first chamber, the second chamber and the third chamber.

5. The thin film composite system according to claim 1, characterized in that: A heating block is fixed on the outside of the shell.

6. The thin film composite system according to claim 1, characterized in that: The trimming unit consists of two cutters, the distance between which is the same as the length of the coating lip.

7. The thin film composite system according to claim 6, characterized in that: The trimming unit also includes a discharge pipe, which includes a feed port and a discharge port. An air inlet pipe is fixed to the side of the discharge pipe, and a fan is fixed to the air inlet pipe. The air outlet of the fan is the same as the discharge port of the discharge pipe.

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