Plastic film and plastic film production process

Abstract

The invention relates to the field of adhesive tape production, in particular to a plastic film and a plastic film production process, and the plastic film production process comprises the following steps: step 1, a worker places a transparent plastic film on a base, so that the transparent plastic film passes through two coating rollers, and the two coating rollers convey the transparent plastic film; 2, the surface of the moving transparent plastic film is coated with an organic silicon frosted agent in a point coating mode through a material storage box; 3, two coating rollers are used for rolling and coating the surface of the transparent plastic film with the organic silicon frosted agent; step 4, collecting the redundant organic silicon frosted agent and organic silicon powder through two material boxes and two scraping plates; 5, the organic silicon frosted agent is dried through a drying box, and the frosted surface plastic film is obtained; the organic silicon frosted agent can be uniformly distributed on the plastic film in an intermittent dispensing manner, so that resources are further saved, and the difficulty of later cleaning is reduced.

Description

Technical Field

[0001] The present invention relates to the field of plastic film production, and particularly to a plastic film and a plastic film production process. Background Art

[0002] The matte plastic film belongs to one of the many types of plastic films. The matte plastic film has the characteristic of being smooth and skin-friendly to the touch. When processing the matte plastic film, a matting agent (such as silicone particles) needs to be coated on the film surface. In the prior art, a coating machine is used to place the silicone matting agent on the plastic film, and then it is subjected to extrusion coating treatment through rollers, and finally the silicone matting agent is dried to obtain it. However, the conventional coating machine directly places the liquid silicone matting agent on the plastic film, resulting in the over-concentration of the liquid silicone matting agent. During the initial coating, there are easily phenomena such as uneven distribution of the silicone matting agent and a large amount of overflow of the silicone matting agent, increasing the difficulty of subsequent cleaning and wasting resources. Therefore, in view of the above problems, a plastic film and a plastic film production process are proposed to further optimize the coating of the silicone matting agent. Summary of the Invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a plastic film and a plastic film production process. The present invention can evenly distribute the silicone matting agent on the plastic film by means of intermittent dot coating, further saving resources and reducing the difficulty of subsequent cleaning.

[0004] A plastic film production device includes a base. Two coating rollers are rotatably connected to the base. A transparent plastic film is arranged on the surface of the base. Two sliding rods are slidably connected to the base. A storage box is fixedly connected inside between the two sliding rods. A first spring is sleeved on each of the two sliding rods, and the first spring is located between the storage box and the base. A baffle is fixedly connected to the lower end of each of the two sliding rods. A plug is slidably connected inside the storage box. The lower part of the plug is trapezoidal in reverse. A second spring is fixedly connected between the plug and the inner wall of the base. A feed pipe is connected to the storage box. A driving motor is fixedly connected to the base. Gears are fixedly connected to both of the two coating rollers, and one of the gears is fixedly connected to the output shaft of the driving motor.

[0005] A plurality of diversion grooves are evenly opened at the lower end of the plug, and the diversion grooves penetrate through the plug.

[0006] A limiting plate is fixedly connected to the storage box. A limiting groove is opened on the limiting plate. A push rod is slidably connected in the limiting groove. The upper end of the storage box is wedge-shaped.

[0007] An eccentric wheel is fixedly connected to one of the coating rollers. An eccentric rod is rotatably connected to the eccentric wheel. A support frame is rotatably connected to the eccentric rod. The push rod is fixedly connected to the support frame.

[0008] Two material boxes are fixedly connected to the base. One side of each of the two material boxes is attached to the left and right ends of the transparent plastic film respectively. Scrapers are fixedly connected to the upper ends of the two material boxes, and both scrapers are close to the surface of the coating roller located above.

[0009] Connection boxes are fixedly connected to both material boxes. A connecting pipe is fixedly connected between the two connection boxes. A blower is installed in the middle of the connecting pipe. The air inlet pipe of the blower is communicated with the connecting pipe. Filters are installed inside both connection boxes, and the ports of the connecting pipe are blocked by the filters.

[0010] A drying box is fixedly connected to the upper end of the base. There is an opening at each of the front and rear ends of the drying box, and heating wires are installed inside the drying box.

[0011] The drying box is communicated with the air outlet of the blower, and the drying box is in the shape of a right trapezoid. Description of the Drawings

[0012] The present invention will be further described in detail below in conjunction with the drawings and specific implementation methods.

[0013] Figure 1 and Figure 2 is a schematic diagram of the overall structure of a plastic film production device;

[0014] Figure 3 is a schematic diagram of the structure of the limiting plate;

[0015] Figure 4 is a sectional view of the structure of the storage box;

[0016] Figure 5 is a schematic diagram of the structure of the eccentric wheel;

[0017] Figure 6 is a schematic diagram of the structure of the material box;

[0018] Figure 7 is a sectional view of the structure of the drying box;

[0019] Figure 8 is a schematic diagram of the structure of the coating roller. Detailed Description of the Invention

[0020] The present invention will be described in detail in combination with the drawings in the embodiments of the present invention.

[0021] A plastic film production device includes a base 101. Two coating rollers 104 are rotatably connected to the base 101. A transparent plastic film 102 is disposed on the surface of the base 101. Two slide bars 401 are slidably connected to the base 101. A storage tank 301 is fixedly connected between the two slide bars 401. A first spring 402 is sleeved on each of the two slide bars 401. The first spring 402 is located between the storage tank 301 and the base 101. A retaining piece is fixedly connected to the lower end of each of the two slide bars 401. A plug block 302 is slidably connected in the storage tank 301. The lower part of the plug block 302 is trapezoidal in reverse. A second spring 304 is fixedly connected between the plug block 302 and the inner wall of the base 101. A feed pipe is connected to the storage tank 301. A driving motor 105 is fixedly connected to the base 101. A gear 103 is fixedly connected to each of the two coating rollers 104. One of the gears 103 is fixedly connected to the output shaft of the driving motor 105.

[0022] A plurality of diversion grooves 303 are evenly formed at the lower end of the plug block 302. The diversion grooves 303 penetrate through the plug block 302.

[0023] A limiting plate 305 is fixedly connected to the storage tank 301. A limiting groove is formed on the limiting plate 305. A push rod 204 is slidably connected in the limiting groove. The upper end of the storage tank 301 is wedge-shaped.

[0024] An eccentric wheel 201 is fixedly connected to one of the coating rollers 104. An eccentric rod 202 is rotatably connected to the eccentric wheel 201. A support frame 203 is rotatably connected to the eccentric rod 202. The push rod 204 is fixedly connected to the support frame 203.

[0025] Two material boxes 501 are fixedly connected to the base 101. One side of each of the two material boxes 501 is respectively attached to the left and right ends of the transparent plastic film 102. A scraper 502 is fixedly connected to the upper end of each of the two material boxes 501. Both of the two scrapers 502 are close to the surface of the upper coating roller 104.

[0026] Two connection boxes 503 are fixedly connected to the two material boxes 501. A communicating pipe 504 is fixedly connected between the two connection boxes 503. A blower is installed in the middle of the communicating pipe 504. The air inlet pipe of the blower is communicated with the communicating pipe 504. Filters are installed inside both of the two connection boxes 503. The filters block the ports of the communicating pipe 504.

[0027] A drying box 601 is fixedly connected to the upper end of the base 101. An opening is provided at each of the front and rear ends of the drying box 601. Electric heating wires are installed in the drying box 601.

[0028] The drying box 601 is communicated with the air outlet of the blower. The drying box 601 is trapezoidal in right angle.

[0029] A process for producing a plastic film using the production device, the process includes the following steps:

[0030] Step 1: The staff places the transparent plastic film 102 on the base 101, such that the transparent plastic film 102 passes through two coating rollers 104, and the two coating rollers 104 convey the transparent plastic film 102.

[0031] Step 2: The storage tank 301 dot-coats the silicone abrasive on the surface of the moving transparent plastic film 102.

[0032] Step 3: The two coating rollers 104 roll and coat the silicone abrasive on the surface of the transparent plastic film 102.

[0033] Step 4: Excess silicone abrasive and silicone powder are collected through two material boxes 501 and two scrapers 502.

[0034] Step 5: The silicone abrasive is dried using a drying oven 601 to obtain a frosted surface plastic film.

[0035] The plastic film produced using the production device includes a transparent plastic film 102, and the transparent plastic film 102 has silicone powder adhered to one side.

[0036] See Figure 1-4 and Figure 8

[0037] When using the production device, first, the staff places the transparent plastic film 102 on the base 101, such that the transparent plastic film 102 passes through two coating rollers 104. By driving the two gears 103 to mesh and transmit through the drive motor 105, the two coating rollers 104 can be driven to rotate relative to each other, and the relative rotation of the two coating rollers 104 can convey the transparent plastic film 102.

[0038] The staff connects the feed pipe on the storage tank 301 to a container filled with silicone abrasive, and the silicone abrasive is transported into the storage tank 301 through a pressure pump. During the process of conveying the transparent plastic film 102, the coating roller 104 drives the eccentric wheel 201 to rotate, the eccentric wheel 201 drives the eccentric rod 202 to swing, and the eccentric rod 202 drives the push rod 204 on the support frame 203 to slide in the limit groove on the limit plate 305, thereby realizing the function of the reciprocating sliding of the push rod 204. The limit groove plays a role in limiting the push rod 204 to ensure that the push rod 204 can move linearly.

[0039] See Figure 3-4

[0040] Since the upper end of the storage bin 301 is wedge-shaped, when the push rod 204 extends, the end of the push rod 204 comes into contact with the inclined surface at the upper end of the storage bin 301. The push rod 204 can push the storage bin 301 to move downward. At this time, both sliding rods 401 slide downward, and both first springs 402 are compressed under force. When the storage bin 301 moves downward, it drives the plug 302 into contact with the transparent plastic film 102. The plug 302 can block the opening at the lower end of the storage bin 301 to prevent the silicone abrasive from discharging. The cooperation between the plug 302 and the base 101 enables the plug 302 to slide upward in the storage bin 301. Since the lower part of the plug 302 is trapezoidal inverted, when the lower part of the plug 302 slides into the interior of the storage bin 301, the second spring 304 is compressed under force, and the silicone abrasive can be discharged through the gap between the lower part of the plug 302 and the storage bin 301, thus realizing the function of automatically discharging the silicone abrasive. The discharged silicone abrasive can be applied to the surface of the transparent plastic film 102, facilitating subsequent extrusion coating treatment.

[0041] When the push rod 204 disengages from the upper part of the storage bin 301, the storage bin 301 automatically resets under the action of the two first springs 402. At the same time, the plug 302 automatically resets under the action of the second spring 304, and the plug 302 blocks the opening at the lower end of the storage bin 301 again, thus preventing the silicone abrasive from discharging.

[0042] The multiple diversion grooves 303 at the lower end of the plug 302 play a role in guiding the silicone abrasive. When the plug 302 enters the interior of the storage bin 301, the silicone solvent in the storage bin 301 can be discharged through the multiple diversion grooves 303. Since the multiple diversion grooves 303 are evenly distributed and have equal spacing, the silicone solvent can be evenly separated and dot-coated on the surface of the transparent plastic film 102, facilitating subsequent roll coating treatment. Compared with the conventional coating method, it can prevent the silicone solvent from concentrating at a certain position on the transparent plastic film 102, resulting in uneven coating, reducing the unevenly distributed part during the previous coating, and further reducing waste of resources.

[0043] Under the combined action of the eccentric wheel 201 and the eccentric rod 202, the intermittent sliding function of the push rod 204 is realized, thus realizing the intermittent dot-coating method of the plug 302. Further, the silicone abrasive can be evenly distributed on the moving transparent plastic film 102, avoiding the phenomenon of a large amount of excess silicone abrasive overflowing, and further saving resources.

[0044] Since the eccentric wheel 201 is fixed to the coating roller 104, the coating roller 104 and the storage tank 301 are linked, ensuring that the blocking block 302 can perform the dot coating function when the transparent plastic film 102 moves. When the coating roller 104 stops rotating and the transparent plastic film 102 also stops moving, the storage tank 301 can also stop dot coating, eliminating the need for separate control of the movement of the storage tank 301, avoiding delay control between the two, further preventing missed coating or overcoating, and ensuring the overall quality of the processed plastic film.

[0045] See Figure 6 ,

[0046] After the silicone abrasive is dot coated, under the combined action of the two coating rollers 104, the silicone abrasive can be evenly attached to the surface of the transparent plastic film 102 to achieve a complete coating function. Since the parts on both sides of the coating roller 104 that are not in contact with the transparent plastic film 102 after long-term use will be covered with silicone abrasive under the action of extrusion, and after contact with air, the solvent in the silicone abrasive volatilizes, causing the silicone abrasive to turn into powder and adhere to the upper coating roller 104. In this application, the two scrapers 502 can scrape off the silicone powder at this position, eliminating the need for manual cleaning by staff. Moreover, the scraped silicone powder can fall into the two material boxes 501, and the two material boxes 501 can collect and process the silicone powder. The recycled silicone powder can be remixed with the solvent to form a liquid silicone abrasive again, thus realizing the function of resource conservation.

[0047] See Coating 6,

[0048] Under the action of extrusion, the silicone abrasive evenly spreads on the surface of the transparent plastic film 102, causing the silicone abrasive to adhere to the two edges of the transparent plastic film 102. One side of the two material boxes 501 can scrape off the silicone abrasive adhering to the edges of the transparent plastic film 102, and the scraped silicone abrasive can be collected in the material box 501, realizing the function of recycling the silicone abrasive while cleaning the edges of the transparent plastic film 102.

[0049] See Figure 7 ,

[0050] The drying box 601 functions to dry the silicone abrasive on the surface of the transparent plastic film 102, enabling the silicone to adhere to the surface of the transparent plastic film 102 to form a frosted plastic film. External air is drawn into the drying box 601 by a blower, and hot air is formed under the heating treatment of the heating wire. The hot air dries the silicone abrasive in the drying box 601 and is finally discharged through the opening at one end of the drying box 601. Since the drying box 601 is in the shape of a right trapezoid, the hot air can flow downward along the inclined surface of the inner wall of the drying box 601 when blown out, so as to dry the silicone abrasive on the surface of the transparent plastic film 102, improve the drying efficiency, and further reduce the loss of heat source.

[0051] When the blower starts, its intake pipe extracts external air through the connecting pipe 504, creating negative pressure inside the two connecting boxes 503. Air can enter the connecting boxes 503 through the material box 501. Then, when the silicone powder is scraped off and enters the material box 501, the silicone powder can be sucked into the connecting boxes 503 along with the air flow. The filter screen in the connecting boxes 503 can prevent the silicone powder from entering the connecting pipe 504. Finally, the silicone powder is isolated in the connecting boxes 503. Through this structure, the collection of the silicone powder can be realized, preventing the silicone powder from scattering everywhere after falling into the material box 501, making the silicone powder more concentrated and facilitating subsequent recycling.

Claims

1. A plastic film production device, characterized in that: It includes a base, two coating rollers are rotatably connected to the base, a transparent plastic film is provided on the surface of the base, two sliding rods are slidably connected to the base, a material storage box is fixedly connected in the middle of the two sliding rods, a first spring is sleeved on the two sliding rods, the first spring is located between the material storage box and the base, a baffle is fixedly connected at the lower ends of the two sliding rods, a blocking block is slidably connected in the material storage box, the lower part of the blocking block is an inverted trapezoid, a second spring is fixedly connected between the blocking block and the inner wall of the base, a feeding pipe is connected to the material storage box, a driving motor is fixedly connected to the base, and gears are fixedly connected to the two coating rollers, and one of the gears is fixedly connected to the output shaft of the driving motor.

2. A plastic film production device according to claim 1, characterized in that: A plurality of guide grooves are evenly arranged at the lower end of the block, and the guide grooves run through the block.

3. A plastic film production device according to claim 2, characterized in that: A limiting plate is fixedly connected to the material storage box, a limiting groove is arranged on the limiting plate, a push rod is slidably connected in the limiting groove, and the upper end of the material storage box is wedge-shaped.

4. A plastic film production device according to claim 3, characterized in that: One of the coating rollers is fixedly connected with an eccentric wheel, the eccentric wheel is rotatably connected with an eccentric rod, the eccentric rod is rotatably connected with a support frame, and a push rod is fixedly connected to the support frame.

5. A plastic film production device according to claim 4, characterized in that: Two material boxes are fixedly connected to the base, one side of the two material boxes is respectively attached to the left and right ends of the transparent plastic film, and scrapers are fixedly connected to the upper ends of the two material boxes, and the two scrapers are close to the surface of the coating roller located above.

6. A plastic film production device according to claim 5, characterized in that: A connecting box is fixedly connected to both material boxes, a connecting pipe is fixedly connected between the two connecting boxes, a fan is installed in the middle of the connecting pipe, the air inlet pipe of the fan is connected to the connecting pipe, and filters are installed inside the two connecting boxes to block the port of the connecting pipe.

7. A plastic film production device according to claim 6, characterized in that: The upper end of the base is fixedly connected with a drying box, the front and rear ends of the drying box are respectively provided with an opening, and an electric heating wire is installed in the drying box.

8. A plastic film production device according to claim 7, characterized in that: The drying box is connected with the exhaust port of the fan, and the drying box is a right-angle trapezoid.

9. A process for producing a plastic film using the production device of claim 8, characterized in that: The process includes the following steps: Step 1: The staff places the transparent plastic film on the base so that the transparent plastic film passes through two coating rollers, and the two coating rollers convey the transparent plastic film; Step 2: The storage box applies the silicone scrub on the surface of the moving transparent plastic film; Step 3: Use two coating rollers to roll and apply the silicone frosting agent on the surface of the transparent plastic film; Step 4: Collect the excess silicone abrasive and silicone powder through two material boxes and two scrapers; Step 5: Use a drying oven to dry the silicone scrub to obtain a frosted plastic film.

10. A plastic film produced using the production device of claim 8, characterized in that: The plastic film comprises a transparent plastic film, and organic silicon powder is attached to one side of the transparent plastic film.

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