Preparing system and method of PMMA light-guide-stage transparent membranes

Abstract

The invention discloses a preparing system of PMMA light-guide-stage transparent membranes. The preparing system comprises a washing device, a drying device, an extruding device, a polishing device, aconveying device, a relay type membrane surface dust removal device, a film pasting device, a first cutting device, a traction device, an edge cutting device, a second cutting device and a piece loading device which are sequentially arranged and further comprises negative-pressure chip sucking devices arranged on the discharging sides of the first cutting device, the edge cutting device and the second cutting device correspondingly. Squeezing rollers below a mouth die of the extruding device are a pair of flexible rollers. The relay type membrane surface dust removal device comprises an upperdust removal roller set and a lower dust removal roller set which are arranged on the two faces of the membranes. The negative-pressure chip sucking devices each comprise a plurality of negative-pressure chip sucking parts arranged on one face or two faces of a to-be-cut product. Ultra-thin and ultra-wide PMMA membranes can be produced, inner stress of prepared products is evenly distributed, andthus the products are not prone to being cracked. Meanwhile, the very small thickness tolerance (smaller than 1.5%) and extremely perfect optical quality can be obtained, and the defect that powderedscraps press the appearances of the products to be damaged is effectively overcome.

Description

technical field [0001] The invention relates to a preparation system and a preparation method of a PMMA light-guiding grade transparent film. Background technique [0002] At present, thin and light LCD TVs have almost replaced traditional TVs. LCD products are not only used in TVs, but also widely used in IT industry, game consoles, car navigation systems, etc. In the application of LCD displays, various optical films are widely used. For use, the requirements are: low residual deformation (low refraction), smoothness and transparency on both sides, extreme thickness precision (variation ≤ 2um), less polarization of crystals and foreign objects (not above 10um), heat resistance above 100°C sex. In order to meet the above requirements, the raw materials are limited to PC, PMMA, etc. [0003] The characteristics of PMMA (low impact resistance, poor molding fluidity) itself are not suitable for extrusion and calendering of membranes with a thickness of less than 1.0MM. It is...

AI Technical Summary

Problems solved by technology

However, the extruded and cut PMMA film is adsorbed on the PMMA film due to electrostatic adsorption during the process of being transported to the film laminating machine. The current dust removal device has a general dust removal effect and cannot meet the appearance quality of the optical-grade PMMA ultra-thin light guide plate. Require

In addition, when the precise size of PMMA diaphragm is processed, longitudinal cutting and / or transverse cutting are involved, and the chips generated after cutting tend to remain on the PMMA diaphragm, which will cause the appearance of the product to be crushed by the powder dust generated after sawing. quality defects

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