Seven-layer co-extrusion film blowing equipment for producing high-barrier film
By introducing water rings, gauze, herringbone plates and traction machines into the 7-layer coextrusion blowing equipment, the problem that traditional equipment cannot cool the film bubbles in all directions is solved, and the production efficiency and quality of the film are improved.
Patent Information
- Application Number
- CN202422053733.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-23
AI Technical Summary
Traditional 7-layer coextrusion and blowing equipment cannot fully cool the film bubbles, resulting in low production efficiency, film tensile strength and gloss.
A device including water ring, gauze, herringbone plate and a traction machine is designed. The film bubble is stabilized through the inside of the water ring, the film bubble is moved vertically in the direction of the water flow of the gauze, the herringbone plate is flattened into a sheet, the traction machine is stretched into a thin film, and the drying process is carried out through a dryer.
The cooling speed and production capacity of the film bubbles are improved, the tensile strength and gloss of the film are improved, the uniformity of the thickness is improved, and the stable winding of the film is achieved.
Smart Images
Figure CN223013885U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic production equipment, in particular to a 7-layer co-extrusion blown film equipment for producing high-barrier films. Background Art
[0002] The 7-layer co-extrusion blown film equipment is an advanced equipment for producing high-barrier films. It is derived from the need to improve the performance of packaging materials, especially to enhance the gas and water vapor barrier properties. This equipment simultaneously co-extrudes multiple layers of different materials and blows them into a film, using the characteristics combination of each layer of material to achieve excellent barrier effects.
[0003] The prior art of the 7-layer co-extrusion blown film equipment includes a high-precision multi-layer co-extrusion system, a fine temperature control and pressure control mechanism, and advanced blow molding technology. The equipment forms a composite film through the simultaneous co-extrusion of multiple layers of different materials, combines the barrier characteristics of different materials, and improves the gas and water vapor barrier properties of the overall film. The prior art also integrates an automated control system to ensure the uniformity of each layer of material and the high quality of the film.
[0004] Traditional equipment cannot cool the film bubble comprehensively, which results in low production efficiency, low tensile strength and glossiness of the film. Therefore, a 7-layer co-extrusion blown film equipment for producing high-barrier films is proposed to solve the above problems. Summary of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a 7-layer co-extrusion blown film equipment for producing high-barrier films, aiming to improve the problems that the equipment in the prior art cannot cool the film bubble comprehensively, resulting in low production efficiency, low tensile strength and glossiness of the film.
[0006] To achieve the above object, the utility model adopts the following technical scheme: A 7-layer co-extrusion blown film equipment for producing high-barrier films, including a platform, a die holder is fixedly connected to the upper part of the platform, a plurality of evenly distributed extruders are fixedly connected to the upper part of the platform, a track is fixedly connected to the middle part of the platform, a lifting frame is slidably connected to the upper part of the track, a water ring is fixedly connected to the middle part of the lifting frame, a gauze is fixedly connected to the lower part of the water ring, the output end of the die holder is fixedly connected to the inside of the water ring, a wind ring is fixedly connected to the lower part of the input end of the die holder, a blower is fixedly connected to the upper left side of the platform, an output end of the blower is fixedly connected to a shunt pipe, and a right output of the shunt pipe is fixedly connected to the input end of the die holder.
[0007] Further, a turntable is provided at the lower part of the platform. A gear disc is rotatably connected to the lower part of the turntable. A motor is fixedly connected to the upper part of the turntable. The driving end of the motor meshes with the gear disc. A bracket is fixedly connected to the upper part of the turntable. A herringbone plate is fixedly connected to the inside of the bracket. A tractor is fixedly connected to the inside of the bracket. A winder is fixedly connected to the upper part of the turntable.
[0008] Further, multiple extruders are centrosymmetric, and the included angle between multiple extruders is 45 degrees.
[0009] Further, a ladder is provided on the right side of the platform, and a guardrail is provided at the upper edge of the platform.
[0010] Further, the input end of the tractor matches the lower end of the herringbone plate, and the output end of the tractor matches the input end of the winder.
[0011] Further, the herringbone plate is electrically controlled.
[0012] Further, the lower end of the gauze is located at the input end of the herringbone plate.
[0013] Further, an electric control cabinet is fixedly connected to the right side of the platform, and a dryer is fixedly connected to the side of the bracket away from the tractor.
[0014] The utility model has the following beneficial effects:
[0015] 1. In the utility model, when the film bubble passes through the inside of the water ring, it is stably shaped. The film bubble moves along with the water flow direction of the gauze, and the film bubble moves vertically from top to bottom. The film bubble enters the herringbone plate and is flattened into a sheet, and then enters the inside of the tractor. The tractor stretches the film bubble into a film with the required thickness. Thus, the functions of improving the cooling speed and production capacity of the film bubble, improving the tensile strength and gloss of the film, and improving the thickness uniformity can be realized.
[0016] 2. In the utility model, the film enters the inside of the winder. The winder will wind the film according to the set meters, automatically flip, automatically cut and wind. When the winder winds the film, the motor starts to drive the turntable to rotate on the outer circumference of the gear disc. Therefore, while improving the flatness of the film, the stability of the film bubble can be ensured. Thus, the function of stably winding the film can be realized. Description of the Drawings
[0017] Figure 1 is a three-dimensional schematic diagram of a 7-layer co-extrusion blown film device for producing high-barrier films proposed by the utility model;
[0018] Figure 2 is a structural schematic diagram of the platform of a 7-layer co-extrusion blown film device for producing high-barrier films proposed by the utility model;
[0019] Figure 3 The structural schematic diagram of an extruder of a 7-layer co-extrusion blown film equipment for producing high-barrier films proposed by the present utility model;
[0020] Figure 4 The structural schematic diagram of a die holder of a 7-layer co-extrusion blown film equipment for producing high-barrier films proposed by the present utility model;
[0021] Figure 5 The structural schematic diagram of a bracket of a 7-layer co-extrusion blown film equipment for producing high-barrier films proposed by the present utility model;
[0022] Figure 6 The structural schematic diagram of a track of a 7-layer co-extrusion blown film equipment for producing high-barrier films proposed by the present utility model.
[0023] Legend:
[0024] 1. Platform; 2. Die holder; 3. Turntable; 4. Gear disc; 5. Motor; 6. Bracket; 7. Extruder; 8. Track; 9. Lifting frame; 10. Water ring; 11. Fan; 12. Shunt pipe; 13. Air ring; 14. Rewinder; 15. Dryer; 16. Chevron plate; 17. Traction machine; 18. Electric control cabinet; 19. Gauze. Specific embodiments
[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0026] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6, an embodiment provided by the present utility model: a 7-layer co-extrusion blown film equipment for producing high-barrier films, including a platform 1 which can support the whole equipment. A die holder 2 is fixedly connected to the upper part of the platform 1, and the die holder 2 can install the die and inject processing materials into the die. A plurality of evenly distributed extruders 7 are fixedly connected to the upper part of the platform 1. The extruder 7 is a prior art. The extruder 7 includes a reducer, a driving motor, a hopper, a screw, an air cooler, a heater and a screen changer. A track 8 is fixedly connected to the middle part of the platform 1, and the track 8 can provide sliding support for the lifting frame 9. The lifting frame 9 is slidably connected to the upper part of the track 8. The lifting frame 9 can be a prior art. The lifting frame 9 can drive the water ring 10 to lift and move horizontally. A water ring 10 is fixedly connected to the middle part of the lifting frame 9. The water ring 10 can flow out water to immerse the gauze 19 and drive the product to flow out. A gauze 19 is fixedly connected to the lower part of the water ring 10, and the gauze 19 can guide the product to move downward. The output end of the die holder 2 is fixedly connected inside the water ring 10. A wind ring 13 is fixedly connected to the lower part of the input end of the die holder 2, and the wind ring 13 can cool the materials inside the die. A blower 11 is fixedly connected to the upper left side of the platform 1, and the blower 11 can blow out gas. The output end of the blower 11 is fixedly connected to a shunt pipe 12, and the shunt pipe 12 can evenly introduce and discharge the gas into the inside of the die. The right output of the shunt pipe 12 is fixedly connected to the input end of the die holder 2. The plurality of extruders 7 are centrosymmetric. The extruders 7 can evenly extrude the raw materials into the inside of the die. The included angle between the plurality of extruders 7 is 45 degrees. A ladder is arranged on the right side of the platform 1, and a guardrail is arranged at the upper edge of the platform 1.
[0027] Refer to Figures 1 - 5 , a turntable 3 is arranged at the lower part of the platform 1, and the turntable 3 can support the movement of the upper structure. A water tank is arranged at the upper part of the turntable 3, which can temporarily store water. A gear disk 4 is rotatably connected to the lower part of the turntable 3, and the gear disk 4 and the motor 5 cooperate to drive the turntable 3 to rotate. A motor 5 is fixedly connected to the upper part of the turntable 3, and the driving end of the motor 5 meshes with the gear disk 4. A bracket 6 is fixedly connected to the upper part of the turntable 3, and the bracket 6 can support the herringbone plate 16. The herringbone plate 16 is fixedly connected inside the bracket 6, and the herringbone plate 16 can extrude the film bubble. A tractor 17 is fixedly connected inside the bracket 6, and the tractor 17 can drive the film bubble to move. A winder 14 is fixedly connected to the upper part of the turntable 3, and the winder 14 is equipped with an automatic cutting function and can cut the film bubble into a certain length. The input end of the tractor 17 matches the lower end of the herringbone plate 16, and the output end of the tractor 17 matches the input end of the winder 14. The herringbone plate 16 is electrically controlled. The lower end of the gauze 19 is located at the input end of the herringbone plate 16. An electric control cabinet 18 is fixedly connected to the right side of the platform 1. A dryer 15 is fixedly connected to the side of the bracket 6 away from the tractor 17, and the dryer 15 can dry the film bubble.
[0028] Working principle: Control the electric control cabinet 18 to start the equipment, evenly mix the raw materials in proportion, put the raw materials into the hopper inside the extruder 7, and make the raw materials enter the screw. After the outer barrel of the screw is heated, the granular raw materials are melted into a melt. The drive motor drives the reducer to drive the screw to rotate, forming a spiral thrust, compressing the melt to the screen changer and distributor and then entering the inside of the die. The die forms a circular embryo. Start the fan 11 to extract air and evenly inject air into the bottom of the die through the shunt pipe 12. The air blows the embryo into a cylindrical film bubble. The film bubble is preliminarily cooled by the air ring 13 and then separated from the die. When the film bubble passes through the inside of the water ring 10, it is shaped and stabilized. The film bubble moves vertically downward along the water flow direction of the gauze 19. The film bubble enters the chevron plate 16 and is flattened into a sheet, and then enters the inside of the tractor 17. The tractor 17 stretches the film bubble into a film with the required thickness. The film then enters the inside of the dryer 15 for drying treatment. The film enters the inside of the rewinder 14. The rewinder 14 will wind the film according to the set meterage, automatically turn over, automatically cut and wind. When the rewinder 14 winds the film, the motor 5 starts to drive the turntable 3 to rotate on the outer circumference of the gear disk 4. Therefore, the flatness of the film can be improved while ensuring the stability of the film bubble.
[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A 7-layer co-extrusion blown film equipment for producing high barrier film, comprising a platform (1), characterized in that: The upper part of the platform (1) is fixedly connected to a mold frame (2), the upper part of the platform (1) is fixedly connected to a plurality of evenly distributed extruders (7), the middle part of the platform (1) is fixedly connected to a track (8), the upper part of the track (8) is slidably connected to a lifting frame (9), the middle part of the lifting frame (9) is fixedly connected to a water ring (10), the lower part of the water ring (10) is fixedly connected to a gauze (19), the output end of the mold frame (2) is fixedly connected to the inside of the water ring (10), the lower part of the input end of the mold frame (2) is fixedly connected to an air ring (13), the upper left part of the platform (1) is fixedly connected to a fan (11), the output end of the fan (11) is fixedly connected to a shunt pipe (12), and the right output of the shunt pipe (12) is fixedly connected to the input end of the mold frame (2).
2. The 7-layer co-extrusion blown film equipment for producing high barrier film according to claim 1, characterized in that: A turntable (3) is arranged at the lower part of the platform (1), and a toothed disc (4) is rotatably connected to the lower part of the turntable (3), and a motor (5) is fixedly connected to the upper part of the turntable (3), and the driving end of the motor (5) and the toothed disc (4) are meshed with each other. A bracket (6) is fixedly connected to the upper part of the turntable (3), and a herringbone plate (16) is fixedly connected to the interior of the bracket (6), and a traction machine (17) is fixedly connected to the interior of the bracket (6), and a winding machine (14) is fixedly connected to the upper part of the turntable (3).
3. The 7-layer co-extrusion blown film equipment for producing high barrier film according to claim 1, characterized in that: The multiple extruders (7) are centrally symmetrical, and the angle between the multiple extruders (7) is forty-five degrees.
4. The 7-layer co-extrusion blown film equipment for producing high barrier film according to claim 1, characterized in that: A ladder is provided on the right side of the platform (1), and a guardrail is provided at the upper edge of the platform (1).
5. The 7-layer co-extrusion blown film equipment for producing high barrier film according to claim 2, characterized in that: The input end of the traction machine (17) matches the lower end of the herringbone plate (16), and the output end of the traction machine (17) matches the input end of the winding machine (14).
6. The 7-layer co-extrusion blown film equipment for producing high barrier film according to claim 2, characterized in that: The herringbone plate (16) is electrically controlled.
7. The 7-layer co-extrusion blown film equipment for producing high barrier film according to claim 2, characterized in that: The lower end of the gauze (19) is located at the input end of the herringbone plate (16).
8. The 7-layer co-extrusion blown film equipment for producing high barrier film according to claim 2, characterized in that: An electric control cabinet (18) is fixedly connected to the right side of the platform (1), and a drying machine (15) is fixedly connected to the side of the bracket (6) away from the traction machine (17).