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Method for improving cutting and winding effects of polyester film

A technology of polyester film and pressing roller, which is applied in the direction of winding strips, thin material processing, sending objects, etc., can solve the problems of affecting the utilization rate of the film, reducing the utilization rate of polyester film, and being unable to use it.

Inactive Publication Date: 2011-08-17
WEIFANG FUWEI PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyester film has good mechanical properties, optical properties, heat and cold resistance, etc., and is widely used in many fields of industry. However, the quality of the final product depends not only on the physical, mechanical and electrical properties of the film, but also on the winding effect of the film. , if the film winding effect is poor, it will affect the utilization rate of the film, and even cannot be used
[0003] During the slitting and winding process of polyester film, problems such as bottom wrinkle, middle wrinkle and surface wrinkle often appear, which seriously affect the winding effect of polyester film, resulting in many quality problems in the downstream processing of polyester film, reducing the The utilization rate of polyester film

Method used

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  • Method for improving cutting and winding effects of polyester film

Examples

Experimental program
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Effect test

Embodiment 1

[0013] As shown in the accompanying drawings, the thickness of the polyester film is 12um, the diameters of the first pressing roller 2 and the second pressing roller 3 used are 100mm, and the straightness is 0.18mm / m.

[0014] Put the parent roll produced by the main line on the unwinding arm of the slitting machine, and then pass the film through the unwinding tension control roller, guide roller, and flattening roller of the slitting machine. The knife cuts the film into multiple sections of narrower films required by customers, and then presses the first pressing roller 2 on the cut polyester film roll 1, and presses the second pressing roller 3 on the first pressing roller 2 Above, the centers of the polyester film roll 1, the first press roller 2 and the second press roller 3 are on the same straight line, and then the winding tension is 150-200N / m, and the winding tension is 300-450m / min. Carry out the slitting and winding of the polyester film at a vehicle speed; the 2...

Embodiment 2

[0019] As shown in the drawings, the thickness of the polyester film is 23um, the diameters of the first pressing roller 2 and the second pressing roller used are 100mm, and the straightness is 0.19mm / m. The core of the first pressure roller 2 is an alloy core, and the surface of the first pressure roller 2 is covered with glue, the core of the second pressure roller 3 is an alloy core, and the surface of the second pressure roller 3 is Not covered with glue.

[0020] The production work of this embodiment is the same as embodiment 1.

[0021] Table 2 Comparison of the effects of cutting polyester films with different winding tensions and different winding speeds (film 23um, roller diameter 120mm)

[0022] project

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Abstract

The invention discloses a method for improving cutting and winding effects of a polyester film. When in winding, a first compression roller is pressed on the surface of a polyester film roll, a second compression roller is pressed on the surface of the first compression roller, circle centers of cross sections of the polyester film roll, the first compression roller and the second compression roller are arranged on the same straight line, and the polyester film is wound under the winding tension of 150-200N / m and the winding speed of 300-450m per minute; by adopting a winding method of two compression rollers, the straightness of the compression roller pressed on the polyester film roll is high, which is beneficial to the exhaust of air in the winding process; large-tension winding and lower-speed winding are also beneficial to the exhaust of air in the winding process; the shore hardness of the polyester film roll wound by using the method is larger than 95 degrees; and by using the method, the cutting and winding effects of the polyester film are greatly improved and the problems of winding bottom wrinkling, middle wrinkling and surface wrinkling are solved.

Description

technical field [0001] The invention relates to the technical field of films, in particular to a method for improving the cutting and winding effect of polyester films. Background technique [0002] Polyester film has good mechanical properties, optical properties, heat and cold resistance, etc., and is widely used in many fields of industry. However, the quality of the final product depends not only on the physical, mechanical and electrical properties of the film, but also on the winding effect of the film. , if the winding effect of the film is poor, it will affect the utilization rate of the film, and even cannot be used. [0003] During the slitting and winding process of polyester film, problems such as bottom wrinkle, middle wrinkle and surface wrinkle often appear, which seriously affect the winding effect of polyester film, resulting in many quality problems in the downstream processing of polyester film, reducing the The utilization rate of polyester film has been...

Claims

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Application Information

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IPC IPC(8): B65H18/26B65H35/02
Inventor 滕岩李中国李凤纪
Owner WEIFANG FUWEI PLASTIC
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