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

A preparation system and technology of transparent film, applied in the preparation system and field of PMMA light guide grade transparent film, can solve the requirement that the appearance quality of the optical grade PMMA ultra-thin light guide plate cannot be met, the appearance of the product is crushed, and the dust removal effect is average. and other problems, to achieve perfect optical quality, solve the requirements of appearance quality, and achieve the effect of low cost

Pending Publication Date: 2018-03-20
JIANGSU HANYANG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Experimental program
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Embodiment 1

[0032] Such as Figure 1 to Figure 6 As shown, the present invention is a preparation system for PMMA light-guiding grade transparent film, including a cleaning device 1, a drying device 2, an extruding device 3, a polishing roller unit 4, a roller conveying table 5, and a relay-type diaphragm arranged in sequence. Surface dust removal device, film laminating machine 6, first cutting machine 7, tractor 8, edge trimming machine 9, second cutting machine 10 and sheet loading machine 11; Negative pressure chip suction device on the discharge side of side machine 9 and second cutting machine 10; Extrusion device 3 (extrusion device 3 includes a single-shaft extruder, a gear pump, a polymer filter and a die 12 arranged in sequence , the single-screw extruder uniformly melts, kneads and extrudes the resin particles, the gear pump delivers the molten resin quantitatively, and the polymer filter is used to filter the molten resin. In most cases, it can remove foreign matter and crysta...

Embodiment 2

[0037] The difference from Embodiment 1 is that, as Figure 7 , Figure 8 As shown, a pair of squeeze rollers 13 with a flexible surface is composed of an inner metal roller 18 and a flexible layer 16 coated on the outside of the metal roller 18; the flexible layer 16 is a rubber layer, and the surface of the rubber layer is coated with polytetrafluoroethylene. vinyl film. The upper dust removal roller group and the lower dust removal roller group are respectively provided with two groups along the conveying direction. The upper dust removal roller group and the lower dust removal roller group of the first group are respectively equipped with three dust removal rollers. There are two dust removal rollers respectively. They are respectively high viscosity dust removal roller 20, medium viscosity dust removal roller 21 and low viscosity dust removal roller 22; the second group includes two dust removal rollers respectively arranged on both sides of the PMMA film; respectively ...

Embodiment 3

[0039] The difference from Embodiment 1 is that, as Figure 9 As shown, a pair of squeeze rollers 13 with flexible surfaces includes an inner metal roller 18 and an outer flexible layer 16, and also includes a pressure regulator between the metal roller 18 and the flexible layer 16 for adjusting the hardness of the flexible layer 16. Layer 19, the pressure regulating layer 19 is hollow, and the hollow part is filled with fluid, and the side of the squeeze roller 13 is provided with a fluid inlet; the flexible layer 16 is a rubber layer, and the surface of the rubber layer is covered with a polytetrafluoroethylene film.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D11/00B26D7/18B29C47/00B29C43/46B29C43/24B29C37/04B08B1/02B29K33/04
CPCB26D7/1863B29C37/04B29C43/24B29C43/46B29C48/0011B29D11/00788B29K2033/12B08B1/20
Inventor 赵奇邓渊华金峰
Owner JIANGSU HANYANG NEW MATERIAL TECH
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