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Preparation method of environment-friendly PVA-based film

An environmentally friendly, thin-film technology, applied in the direction of cleaning methods, separation methods, cleaning methods and utensils using gas flow, which can solve problems such as insufficient tension, wrinkles, and low product quality, and achieve easy replacement and improved quality. , the effect of improving production efficiency

Pending Publication Date: 2022-04-22
安徽瑞鸿新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the packaging industry has become a sunrise industry with considerable production capacity and production level. Plastic films are widely used in the fields of textiles, food, daily necessities, pesticides and pharmaceutical packaging. The processing methods of plastic films include extrusion, blow molding, Calendering method, casting method and stretching method, the extrusion method is the most used method, which is to extrude the plastic film after heating and melting the raw materials, then cooling and forming, and then pulling and coiling to complete the finished roll film. The film preparation method is easy to wrinkle due to insufficient tension during the winding process when preparing the film, resulting in low quality of the produced product

Method used

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  • Preparation method of environment-friendly PVA-based film
  • Preparation method of environment-friendly PVA-based film
  • Preparation method of environment-friendly PVA-based film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of an environment-friendly PVA base film, comprising the following steps:

[0038] Step 1: PVA-based raw materials are added to the extruder 1, and the extruder 1 extrudes the PVA-based film from the die;

[0039] Step 2: The PVA-based film extruded in step 1 is cooled by cooling roll 4, and then cooled and formed;

[0040] Step 3: The formed PVA-based film is stretched and passed under the cutting blade 29, and fixed on the reel;

[0041] Step 4: Rewind the reel 13, and adjust the tension by using the fixed roller 23. After the rewinding is completed, cut the edge with the cutting blade 29, and then remove the reel to complete the finished product.

Embodiment 2

[0043]As an option, see figure 1 , Figure 2-6 , Figure 9 A cooling roll 4 is arranged below the discharge die of the extruder 1, and the two ends of the cooling roll 4 are connected to a support rod 26 in rotation, and the first motor 3 is fixed on the support rod 26, and the output end of the first motor 3 is connected to One end of the cooling roller 4, the top of the cooling roller 4 is provided with a pressure roller 2, one side of the pole 26 is provided with a steering roller 25, one side of the steering roller 25 is provided with a bracket 5, and one side of the bracket 5 is provided with a support plate 8, One side of the support plate 8 is provided with a cleaning mechanism 9, one side of the cleaning mechanism 9 is provided with a reel 13, the inside of the reel 13 is provided with a socket 15, and both ends of the reel 13 are provided with a fixing mechanism 14;

[0044] The fixing mechanism 14 includes a movable shaft 145 arranged inside the socket 15, the oute...

Embodiment 3

[0048] As an option, see figure 2 , Figure 7 , the top of the reel 13 is provided with a leveling roller 20, the inner rotation of the leveling roller 20 is connected with a first cross bar 19, the two ends of the first cross bar 19 are provided with a moving column 17, and the outside of the moving column 17 is provided with a limit Groove 16, the upper end of moving column 17 is connected with second spring 18 one end, and the other end of second spring 18 is connected with the top inside limit groove 16, and limit groove 16 is opened in the inside of support seat 10, and limit groove 16 is close to the first One side of a cross bar 19 is provided with a second notch 27 , and the first cross bar 19 passes through the second notch 27 .

[0049] Specifically, the processed plastic film is rewound. At this time, the leveling roller 20 is close to the upper end of the roll film wound on the outside of the reel 13. Due to the return pressure of the second spring 18, the leveli...

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Abstract

The invention discloses a preparation method of an environment-friendly PVA-based film, and belongs to the technical field of film preparation, and the preparation method comprises the following steps: step 1, adding a PVA-based raw material into an extruder, and extruding the PVA-based film from a die head by the extruder; 2, cooling the PVA-based film extruded in the step 1 through a cooling roller, and cooling and molding the PVA-based film; thirdly, the formed PVA-based thin film is pulled and stretched to pass through the lower portion of a cutting blade and fixed to a winding drum; fourthly, a winding drum is used for winding, the tensioning force is adjusted through a fixing roller, and after winding is completed, a cutting blade is used for edge cutting; according to the plastic film rolling device, rolling can be flat, and the quality of a produced plastic film rolling film is guaranteed; the plastic film winding drum is convenient to replace, and the production efficiency is improved; the phenomenon that wrinkles occur due to insufficient tension in the film forming and rolling process is achieved, and the film processing efficiency is greatly improved; the two sides of the film can be dedusted, and the hygienic quality of the film is improved.

Description

technical field [0001] The invention belongs to the technical field of film preparation, and in particular relates to a preparation method of an environment-friendly PVA-based film. Background technique [0002] At present, the packaging industry has become a sunrise industry with considerable production capacity and production level. Plastic films are widely used in the fields of textiles, food, daily necessities, pesticides and pharmaceutical packaging. The processing methods of plastic films include extrusion, blow molding, Calendering method, casting method and stretching method, the extrusion method is the most used method, which is to extrude the plastic film after heating and melting the raw materials, then cooling and forming, and then pulling and coiling to complete the finished roll film. In the film preparation method, when preparing the film, it is easy to wrinkle due to insufficient tension during the winding process, resulting in low quality of the produced pro...

Claims

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Application Information

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IPC IPC(8): B29D7/01B08B5/04B08B15/02B01D46/10B65H18/10B65H18/02B65H23/038B65H23/26
CPCB29D7/01B08B5/04B08B15/02B01D46/10B65H18/10B65H18/028B65H23/038B65H23/26B65H2701/1752
Inventor 李莉李汪洋王琪聂敏陈宁吴磊刘鹏举李怡俊贺允刘梦茹
Owner 安徽瑞鸿新材料科技有限公司
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