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PE plastic thin film preparation method

A plastic film and equipment technology, applied in the field of PE plastic film preparation, can solve the problems of high input cost, residual impurities at the air outlet, adverse effects on the quality of film bubble production, etc.

Inactive Publication Date: 2021-05-18
宁波市东霓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

[0004] (1) In order to improve the cooling efficiency of the air ring, double air ring cooling equipment appeared. In order to adjust the cooling position according to the actual characteristics of the film bubble to be cooled, the double air ring can be set as a height-adjustable structure, and in order to To adjust the height of the two air rings, it is often necessary to set up multiple cylinders or similar driving parts, and the investment cost is relatively high;
[0005] (2) When the air ring is used for a long time, impurities such as dust will accumulate in the air outlet. These impurities will be sprayed out with the cold air during the cooling process and adhere to the surface of the film bubble, which will affect the production quality of the film bubble. However, due to the small size of the air outlet, it is difficult for existing equipment to effectively clean it, and there are still impurities in the air outlet after cleaning

Method used

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  • PE plastic thin film preparation method
  • PE plastic thin film preparation method
  • PE plastic thin film preparation method

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Embodiment Construction

[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0039] Such as Figure 1 to Figure 9 As shown, a PE plastic film preparation method uses an air ring cooling device, the air ring cooling device includes a mounting base 1, a lifting device 2, an air ring 3 and a cleaning device 4, and is prepared by using the above air ring cooling device The specific method flow for PE plastic film is as follows:

[0040] S1. Plasticizing extrusion: melt the plastic particles through the extruder and then plasticize them, and extrude a cylindrical pipe ring through the annular gap of the front port die;

[0041] S2. Inflation molding: the compressed air is introduced into the center hole of the mandrel of the machine head, and the pipe ring is blown into a bubble tube shape to obtain a film bubble;

[0042] S3. ...

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Abstract

The invention relates to a plastic thin film preparation method. Air ring cooling equipment is used in the preparation method, and the air ring cooling equipment comprises a mounting seat, a lifting device, air rings and a cleaning device. The specific method for preparing a plastic thin film by using the air ring cooling equipment comprises the following steps of plasticizing extrusion, blowing forming, air ring cooling, folding flattening and thin film coiling, and the cleaning device comprises a mounting frame, a connecting sliding block, a lifting air cylinder, a lifting plate, a first connecting rod, a cleaning brush, a second connecting rod, a driving mechanism, a connecting ring, convex teeth, a driving gear and a driving motor. According to the preparation method, the height of the air rings is properly adjusted through the lifting device so as to meet actual working requirements, the function of adjusting the height of the two air rings at the same time or adjusting the height of one air ring can be achieved without arranging a plurality of large driving pieces, after the air ring cooling equipment is used for a long time, air outlets of the air rings can be cleaned through the cleaning device, and pollution of dust and other impurities accumulated in the air outlet to film bubbles is avoided.

Description

technical field [0001] The invention relates to the field of plastics, in particular to a method for preparing a PE plastic film. Background technique [0002] PE film, that is, polyethylene film, refers to a film produced with PE particles. PE film has moisture resistance and low moisture permeability. According to different manufacturing methods and control means, polyethylene film can produce products with different properties such as low-density, medium-density, high-density polyethylene and cross-linked polyethylene. [0003] In the preparation process of PE plastic film, it is necessary to use the air ring to cool the film bubble, but the existing air ring has the following problems in the cooling process: [0004] (1) In order to improve the cooling efficiency of the air ring, double air ring cooling equipment appeared. In order to adjust the cooling position according to the actual characteristics of the film bubble to be cooled, the double air ring can be set as a...

Claims

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Application Information

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IPC IPC(8): B29C48/08B29C48/27B29C48/90
CPCB29C48/0018B29C48/08B29C48/27B29C48/90
Inventor 不公告发明人
Owner 宁波市东霓新材料科技有限公司
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