Apparatus and method for surface microstructure processing of polymer film based on roll-to-roll hot rolling

A polymer film and processing device technology, applied in the field of polymer film device processing, can solve the problems of low forming accuracy, large microstructure springback, lack of quenching and conformal modules, etc., to achieve high forming accuracy and reduce springback The effect of deformation and less energy consumption

Active Publication Date: 2014-10-15
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of the above two devices lack quenching and conformal modules, the microstructure has a large springback, and the forming accuracy is low

Method used

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  • Apparatus and method for surface microstructure processing of polymer film based on roll-to-roll hot rolling
  • Apparatus and method for surface microstructure processing of polymer film based on roll-to-roll hot rolling
  • Apparatus and method for surface microstructure processing of polymer film based on roll-to-roll hot rolling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 As shown, a surface microstructure processing device based on roll-to-roll hot rolling polymer film includes an unwinding device, a preheating device, a hot rolling device, a shape-keeping device, a cooling device, and a winding device arranged in sequence. The unwinding device includes an unwinding roller 1, a tension roller 4, a cylinder 5, a tension sensing device 6, a driving roller a2, a driving roller b7, a passive roller a3 and a control system; the cylinder 5 is connected to the tension roller 4, The tension roller 4 is provided with a tension sensing device 6, and the control system is connected to the tension sensing device 6 and the cylinder 5. When the tension sensing device 6 senses that the tension of the film to be embossed is greater than the set value, the control system drives the cylinder 5 to drive The tension roller 4 moves to relax the tension of the film to be embossed, otherwise, the control system drives the cylinder 5 to drive the...

Embodiment 2

[0057] like Figure 4 As shown, on the basis of Example 1, the version roller 17 is changed to a solid roller, the pair of brushes and the resistance wire are canceled, and an infrared radiation heating device 18' is placed on the outside of the version roller 7 close to the embossing surface, and the cooling roller 16 adopts Oil cooling method for cooling. In addition, positioning systems such as Figure 5 As shown, the positioning system is provided with an automatic deviation correction device 28 and an infrared sensor 29, and the automatic deviation correction device 28 is connected on the roller shaft of the transmission device (taking the driving shaft 2 as an example), when the infrared sensor 29 detects the film 30, if an offset occurs during the transmission process, the automatic deviation correction device 28 will control the axial displacement and horizontal angular displacement of the roller shaft.

[0058] The size of the surface fine structure pattern is 500 μ...

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Abstract

The invention relates to device and method for processing a polymer film surface microstructure based on roll-to-roll hot rolling. The method comprises the following six steps: unrolling, pre-heating, hot-rolling, conforming, cooling and rolling. The unrolling step includes continuously drawing a polymer film from a rolled material and removing static electricity on the surface of the film. After the pre-heating step, the polymer film is heated to a temperature below the glass transition temperature thereof to get ready for the hot-rolling step. The local heating treatment is conducted on a plate roller to allow only the temperature of the stamping surface to rise above the glass transition temperature, so as to roll-form the preheated film. The conforming step enables the rolled film in close contact with the surface of the plate roller, so that the film is completely deformed. The formed film is subjected to both cooling and conforming to cause rapid curing of the surface microstructure and reduce rebound. Compared with the prior art, the device and method have the advantages of reducing the risk of rebound and deformation, improving the forming precision of the microstructure, making demoulding easier and increasing the processing efficiency.

Description

technical field [0001] The invention relates to a processing method of a polymer thin film device with a surface fine functional structure using roll-to-roll hot rolling. Background technique [0002] At present, polymer thin film devices with surface micro-functional structures have attracted more and more attention due to their advantages such as low material cost, small thickness tolerance, and smooth surface. Thin film devices mainly include brightness enhancement film, diffusion film (uniform light film), reflective film, laser film and anti-reflection film, etc. In addition to optical films used in liquid crystal displays, flexible displays and electronic paper industries, the application range of polymer thin film devices is constantly expanding, such as solar energy (optical trap films, etc.), electronic components that tend to be integrated and planarized. field, automotive field (ultraviolet protection heat insulation film, etc.), etc. The surface microstructure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C59/04
Inventor 邓宇君易培云彭林法来新民倪军
Owner SHANGHAI JIAOTONG UNIV
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