Cast film device
By designing a cast film device including a reactor, melt pipeline and heat medium pipeline, the polymer is directly heated and fused to form a thin film, solving the problems of complex production process and unsatisfactory mixing effect of the existing cast film, and achieving the effects of shortening production cycle, improving efficiency and reducing costs.
Patent Information
- Application Number
- CN202421287503.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The production process of existing cast films is complicated and requires multiple processes, resulting in a long production cycle and unsatisfactory mixing effect.
A casting film device is designed, including a body, a reactor, a melt pipeline and a heat medium pipeline. Through the connection between the melt pipeline and the heat medium pipeline, the polymer is directly transported from the reactor to the heat medium pipeline, and then heated and fused through the heat medium pipeline to directly form a thin film, eliminating the intermediate granulation, drying and melt extrusion processes.
The device shortens the processing cycle of cast membranes, improves production efficiency, reduces production costs, and improves product quality through filter components.
Smart Images
Figure CN222571520U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of cast film devices, and in particular to a cast film device. Background Art
[0002] Cast film is a non-stretched, non-oriented flat extruded film produced by melt casting and quenching.
[0003] The cast film is produced by granulating the raw materials at the production end, and then screening to remove irregular particles and impurities. The prepared polymer particles, necessary additives and lubricants are placed in the cast film extruder for heating and fusion to make it a fluid state. The melted polymer passes through the gap between the die head and the die lip, and then passes through the slit plate and pressure roller to make it a smooth film.
[0004] The overall production process of cast film in the prior art is complicated, and needs to go through the processes of granulation, drying, screening, baking and melt extrusion. The overall process is long, time-consuming and labor-intensive, and the mixing effect of the cast film machine screw is not ideal. Utility Model Content
[0005] In order to improve the problem of production cycle of cast film, the present application provides a cast film device.
[0006] The present application provides a cast film device, which adopts the following technical solution:
[0007] A cast film device comprises a machine body, a reactor, a melt pipe and a heat medium pipe. The reactor is used to mix reactants evenly to form a polymer. The machine body has a head. One end of the melt pipe is connected to the discharge port of the reactor, and the other end of the melt pipe is connected to one end of a heat medium pipe. The other end of the heat medium pipe is connected to the feed port of the head. The heat medium pipe can heat and fuse the polymer.
[0008] By adopting the above technical scheme, when the required additives are added into the reactor, the components are evenly mixed in the reactor to form a polymer, one end of the melt pipe is connected to the discharge port of the reactor, the other end of the melt pipe is connected to one end of the heat medium pipe, and the other end of the heat medium pipe is connected to the feed port of the die head. The polymer in the reactor enters the heat medium pipe through the melt pipe, and the heat medium pipe heats and fuses the polymer, saving the energy required for separate heating. At the same time, the other end of the heat medium pipe is connected to the feed port of the die head, and the molten polymer passes through the gap between the die head and the die lip, and then passes through the slit plate and the pressure roller, so that it can become a smooth film without going through intermediate granulation, drying and melt extrusion processes, thereby shortening the processing cycle of the cast film, improving the production efficiency of the cast film, and thus reducing the production cost of the cast film.
[0009] Optionally, a filter assembly is connected to the heat medium pipeline, and the filter assembly can screen and remove impurities in the polymer in the heat medium pipeline.
[0010] By adopting the above technical solution, the filter component can screen and remove the polymer in the heat medium pipeline, so that the polymer entering the head is not easy to retain impurities, thereby improving the production quality of the cast film.
[0011] Optionally, the filter assembly includes a mounting plate and a filter screen, the heat medium pipe has a mounting groove for the mounting plate to be embedded, the inner wall of the mounting groove can clamp both sides of the mounting plate to form a limit, the filter screen is connected to the mounting plate, and the filter screen can filter the polymer in the heat medium pipe.
[0012] By adopting the above technical solution, the mounting plate is embedded in the mounting groove, and the inner wall of the mounting groove clamps the two sides of the mounting plate to fix it, so as to realize the fixation of the mounting plate on the heat medium pipe. At the same time, the filter screen is located in the inner cavity of the heat medium pipe. The filter screen can screen the polymer in the heat medium pipe to remove impurities, thereby improving the production quality of the cast film.
[0013] Optionally, a metering pump is connected to the heat medium pipeline, the feed inlet of the metering pump is connected to the inner cavity of the heat medium pipeline, and the discharge port of the metering pump is connected to the feed inlet of the machine head.
[0014] By adopting the above technical solution, the feed port of the metering pump is connected to the inner cavity of the heat medium pipeline, and the discharge port of the metering pump is connected to the feed port of the die. The polymer in the heat medium pipeline can enter the feed port of the die through the metering pump. The metering pump can control the feeding speed of the polymer, thereby ensuring the stability of the cast film production.
[0015] Optionally, a heat conducting pipe is connected to the heat medium pipe, and the heat conducting pipe can supply hot oil to the heat medium pipe.
[0016] By adopting the above technical solution, the heat transfer pipe can supply hot oil to the heat medium pipe, so that the heat medium pipe can stably heat and melt the polymer, thereby ensuring the stability of the heating and melting of the polymer.
[0017] Optionally, a heating pipe is connected to the metering pump, and the heating pipe can heat the polymer in the metering pump.
[0018] By adopting the above technical solution, the heating pipe is connected to the metering pump, and the heating pipe can heat the polymer in the metering pump, making the polymer less likely to cool and solidify, thereby ensuring the stability of the polymer flowing in the inner cavity of the metering pump.
[0019] Optionally, the machine body further includes a bracket and a connecting rod, one end of the connecting rod is connected to the bracket, and the other end of the connecting rod is connected to the surface of the machine head.
[0020] By adopting the above technical solution, one end of the connecting rod is connected to the surface of the machine head, and the other end of the connecting rod is connected to the bracket, so that the machine head is not easy to deviate, thereby improving the limiting stability of the machine head.
[0021] Optionally, a limiting cavity is provided on the surface of the mounting plate for embedding the filter screen, and the inner wall of the limiting cavity can press against the outer periphery of the filter screen to form a limit.
[0022] By adopting the above technical solution, the filter screen is embedded in the limiting cavity, and the circumferential outer wall of the filter screen is pressed against the inner wall of the limiting cavity to form a limit, thereby fixing the filter screen on the mounting plate. When the filter screen needs to be cleaned or replaced, the filter screen is driven out of the limiting cavity to realize the separation of the filter screen and the mounting plate, thereby facilitating the user to clean and replace the filter screen.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. The setting of melt pipe and heat medium pipe enables it to become a smooth film without going through intermediate granulation, drying and melt extrusion processes, shortening the processing cycle of cast film, improving the production efficiency of cast film, and thus reducing the production cost of cast film;
[0025] 2. The installation plate and filter screen are set up. The filter screen can screen the polymer in the heat medium pipeline to remove impurities, thereby improving the production quality of the cast film;
[0026] 3. Setting of metering pump: the metering pump can control the feeding speed of polymer, thus ensuring the stability of cast film production. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application.
[0028] Figure 2 It is a partial cross-sectional view in the embodiment of the present application, mainly showing the limiting cavity.
[0029] Explanation of the reference numerals: 1. Machine body; 11. Machine head; 12. Bracket; 13. Connecting rod; 2. Reactor; 3. Melt pipe; 4. Heat medium pipe; 41. Mounting groove; 5. Filter assembly; 51. Mounting plate; 511. Connecting hole; 512. Limiting cavity; 513. Step surface; 52. Filter screen; 6. Heat transfer pipe; 7. Metering pump; 8. Heating pipe. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-2 This application is described in further detail.
[0031] The present application embodiment discloses a cast film device. Figure 1A cast film device includes a body 1, a reactor 2, a melt pipe 3 and a heat medium pipe 4. The body 1 includes a head 11, a bracket 12 and a connecting rod 13. The bottom of the bracket 12 abuts the ground to form a support. The number of connecting rods 13 can be one, two or more. In the embodiment of the present application, the number of connecting rods 13 is two. One ends of the two connecting rods 13 are fixed on the surface of the bracket 12 at intervals, and the other ends of the two connecting rods 13 are fixed on the surface of the head 11 at intervals. The axis of the connecting rod 13 and the height direction of the bracket 12 are parallel to each other, so that the head 11 is not easy to deviate on the bracket 12, thereby improving the stability of the operation of the head 11.
[0032] Reference Figure 1 The reactor 2 is used for mixing reactants evenly to form a polymer. One end of the melt pipe 3 is fixed to the discharge end of the reactor 2 through a flange, and the other end of the melt pipe 3 is fixed to the end of the heat medium pipe 4 through a flange. The other end of the heat medium pipe 4 is fixed to the feed end of the die head 11. The polymer in the reactor 2 enters the heat medium pipe 4 through the melt pipe 3. The heat medium pipe 4 can heat and fuse the polymer. The molten polymer in the heat medium pipe 4 enters the feed end of the die head 11. The molten polymer passes through the gap between the die head 11 and the die lip, and then passes through the slit plate and the pressure roller, so that the polymer forms a smooth film without going through intermediate granulation, drying and melt extrusion processes, thereby shortening the processing cycle of the cast film, improving the production efficiency of the cast film, and thus reducing the production cost of the cast film.
[0033] Reference Figure 1 and Figure 2 A filter assembly 5 is connected to the heat medium pipe 4. The filter assembly 5 can screen and remove impurities in the polymer in the heat medium pipe 4. The filter assembly 5 includes a mounting plate 51 and a filter screen 52. The heat medium pipe 4 has a mounting groove 41 for the mounting plate 51 to be embedded. The mounting groove 41 is connected to the inner cavity of the heat medium pipe 4. The inner wall of the mounting groove 41 can clamp both sides of the mounting plate 51 to form a limit.
[0034] Reference Figure 1 and Figure 2 The mounting plate 51 is provided with a connecting hole 511 for the polymer to pass through. The number of the connecting holes 511 can be one, two or more. In the embodiment of the present application, the number of the connecting holes 511 is two, and the two connecting holes 511 are spaced apart on the mounting plate 51; the inner wall of the connecting hole 511 is coaxially provided with a limiting cavity 512 for the filter screen 52 to be embedded. The inner wall of the limiting cavity 512 can press against the circumferential outer wall of the filter screen 52 to form a limit, thereby realizing the installation of the filter screen 52 on the mounting plate 51, and a step surface 513 is formed at the connection between the limiting cavity 512 and the connecting hole 511. The step surface 513 can press against the surface of the filter screen 52 to form a limit, so that the filter screen 52 is not easily offset in the limiting cavity 512, thereby improving the limiting stability of the filter screen 52 on the mounting plate 51.
[0035] Reference Figure 1 and Figure 2 When the mounting plate 51 is embedded in the mounting groove 41, the inner wall of the mounting groove 41 clamps the two sides of the mounting plate 51 to form a limit, the connecting hole 511 is connected to the inner cavity of the heat medium pipeline 4, the step surface 513 faces the reactor 2, and the filter screen 52 screens and removes impurities in the polymer in the heat medium pipeline 4, thereby improving the production quality of the cast film.
[0036] As another scheme, the filter assembly 5 includes a mounting ring, a filter sponge and two clamps. The filter sponge is embedded in the inner ring of the mounting ring, and the circumferential outer wall of the filter sponge is pressed against the inner ring of the mounting ring to form a fixation. The heat medium pipe 4 includes a heat medium part 1 and a heat medium part 2. One end of the heat medium part is clamped and fixed to one end of the mounting ring by a clamp, and the other end of the heat medium part 1 is connected to the discharge end of the reactor 2; one end of the heat medium part 2 is clamped and fixed to one end of the mounting ring by a clamp, and the other end of the heat medium part 2 is connected to the feed end of the machine head 11. The inner ring of the mounting ring connects the inner cavity of the heat medium part 1 and the inner cavity of the heat medium part 2, and the filter sponge can screen and remove impurities in the polymer in the heat medium pipe 4, thereby improving the production quality of the cast film.
[0037] Reference Figure 1 A heat transfer pipe 6 is installed on the heat medium pipe 4, and the heat transfer pipe 6 can supply hot oil to the heat medium pipe 4, so that the heat medium pipe 4 can stably heat and melt the polymer, thereby ensuring the stability of cast film production; a metering pump 7 is installed at the end of the heat medium pipe 4 close to the head 11, and the feed port of the metering pump 7 is connected to the inner cavity of the heat medium pipe 4, and the discharge port of the metering pump 7 is connected to the feed port of the head 11. The metering pump 7 can control the flow rate of the polymer, thereby further improving the production quality of the cast film.
[0038] Reference Figure 1 A heating pipe 8 is installed on the metering pump 7, and the heating pipe 8 can heat the polymer in the metering pump 7, so that the polymer in the metering pump 7 is not easy to cool and solidify, thereby ensuring the stability of cast film production.
[0039] The implementation principle of a cast film device in an embodiment of the present application is as follows: the required materials are put into the reactor 2, the reactor 2 mixes the materials evenly to form a polymer, the polymer in the reactor 2 enters the heat medium pipe 4 through the melt pipe 3, the heat medium pipe 4 can heat and fuse the polymer, the connecting hole 511 is connected to the inner cavity of the heat medium pipe 4, the filter screen 52 screens and removes impurities in the polymer in the heat medium pipe 4, thereby improving the production quality of the cast film, and at the same time the metering pump 7 can control the flow rate of the polymer entering the feed end of the die 11, the molten polymer passes through the gap between the die 11 and the die lip, and then passes through the slit plate and the pressure roller, so that the polymer forms a smooth film, without going through intermediate granulation, drying and melt extrusion processes, thereby shortening the processing cycle of the cast film, improving the production efficiency of the cast film, and thus reducing the production cost of the cast film.
[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A cast film device, characterized in that: The invention comprises a machine body (1), a reaction kettle (2), a melt pipe (3) and a heat medium pipe (4); the reaction kettle (2) is used to mix reactants uniformly to form a polymer; the machine body (1) has a machine head (11); one end of the melt pipe (3) is connected to the discharge port of the reaction kettle (2); the other end of the melt pipe (3) is connected to one end of the heat medium pipe (4); the other end of the heat medium pipe (4) is connected to the feed port of the machine head (11); and the heat medium pipe (4) can heat and fuse the polymer.
2. A cast film device according to claim 1, characterized in that: The heat medium pipeline (4) is connected to a filter assembly (5), and the filter assembly (5) is capable of screening and removing impurities in the polymer in the heat medium pipeline (4).
3. A cast film device according to claim 2, characterized in that: The filter assembly (5) comprises a mounting plate (51) and a filter screen (52); the heat medium pipeline (4) has a mounting groove (41) for the mounting plate (51) to be embedded in; the inner wall of the mounting groove (41) can clamp two sides of the mounting plate (51) to form a limit position; the filter screen (52) is connected to the mounting plate (51); and the filter screen (52) can filter polymers in the heat medium pipeline (4).
4. A cast film device according to claim 1, characterized in that: The heat medium pipeline (4) is connected to a metering pump (7), the feed port of the metering pump (7) is connected to the inner cavity of the heat medium pipeline (4), and the discharge port of the metering pump (7) is connected to the feed port of the machine head (11).
5. A cast film device according to claim 1, characterized in that: The heat medium pipeline (4) is connected to a heat conduction pipeline (6), and the heat conduction pipeline (6) can supply hot oil to the heat medium pipeline (4).
6. A cast film device according to claim 4, characterized in that: The metering pump (7) is connected to a heating pipe (8), and the heating pipe (8) can heat the polymer in the metering pump (7).
7. A cast film device according to claim 1, characterized in that: The machine body (1) further comprises a bracket (12) and a connecting rod (13), one end of the connecting rod (13) is connected to the bracket (12), and the other end of the connecting rod (13) is connected to the surface of the machine head (11).
8. A cast film device according to claim 3, characterized in that: The mounting plate (51) is provided with a limiting cavity (512) for embedding the filter screen (52) on its surface, and the inner wall of the limiting cavity (512) can press against the outer periphery of the filter screen (52) to form a limit.