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Co-rotating twin-screw compound extruder for producing light diffusion plates and production process thereof

A technology of compound extrusion and light diffusion plate, which is applied in the field of co-rotating twin-screw compound extruder and its production process, can solve the problem of intermittent discharge, black spots, and defective products at the extrusion end of the extruder. Problems such as plasticizing and melting effects of the extruder, to achieve the effect of improving the yield and continuously stabilizing the extrusion process

Active Publication Date: 2015-11-11
雄县钰泰橡塑制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problems to be solved in the present invention are black spots and defective products in the process of producing the diffuser plate, poor plasticizing and melting effects of the co-rotating twin-screw extruder during production, and poor discharge at the extrusion end of the extruder. intermittent problem

Method used

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  • Co-rotating twin-screw compound extruder for producing light diffusion plates and production process thereof
  • Co-rotating twin-screw compound extruder for producing light diffusion plates and production process thereof
  • Co-rotating twin-screw compound extruder for producing light diffusion plates and production process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] a. The main machine mixes the PS raw material, diffusing agent and auxiliary agent in the mixer for 3 minutes at high speed; b. The auxiliary machine mixes according to the main machine formula or adds anti-UV material from the raw material and then puts it into the mixer for high-speed stirring 3 minutes; c. The main machine mixing material is directly delivered to the twin-screw barrel by the screw feeding device; the temperature of each zone of the twin-screw is set to 175°C in the first zone; 203°C in the second zone; 210°C in the third zone; 208°C in the fourth zone 220°C in the fifth zone; 220°C in the sixth zone; 215°C in the seventh zone; Zone 195°C; Zone 3 215°C; Zone 4 220°C; Zone 5 220°C; Extract out the water and impurities, remove impurities, improve the purity of the melt, and then extrude the sheet through three-roll embossing and setting; f. Anti-UV and anti-static layer.

Embodiment 2

[0037] a. Main machine mixing PS raw material, diffusing agent and auxiliary agent are stirred in the mixer at high speed for 4 minutes; b. Auxiliary machine mixing is according to the main machine formula or raw materials are added with anti-UV material and then put into the mixer for high-speed stirring 4 minutes; c. The main machine mixing material is directly delivered to the twin-screw barrel by the screw feeding device; the temperature of each zone of the twin-screw is set to 180°C in the first zone; 205°C in the second zone; 215°C in the third zone; 220°C in the fourth zone 225 °C in the fifth area; 225 °C in the sixth area; 220 °C in the seventh area; zone 200°C; zone 3 220°C; zone 4 225°C; zone 5 225°C; Extract out the water and impurities, remove impurities, improve the purity of the melt, and then extrude the sheet through three-roll embossing and setting; f. Anti-UV and anti-static layer.

[0038] Implementation three:

[0039] a. Main machine mixing PS raw mate...

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Abstract

The invention relates to the technical field of equipment for producing light diffusion plates, in particular to a co-rotating twin-screw compound extruder for producing light diffusion plates and a production process thereof. The co-rotating twin-screw compound extruder mainly consists of a frame, a feeing device, a transmission device and an extruding device, wherein the extruding device mainly consists of a feeding section, a melting section and a homogenizing section; the melting section mainly consists of interrupted screw edges and annularly arranged pins; vacuumizing exhaust devices are respectively arranged at the upper and lower ends of the melting section; and multiple discharge holes are formed on screw edges of twin screws in the extruding device in the axial direction of the screws. After the structure is adopted, the melting section consisting of the interrupted screw edges and the annularly arranged pins can be used for fully plasticizing materials; the holes formed in the axial direction of the screw edges are used for making up the defect of extruding out broken materials in the movement engagement process of the twin screws in the extruding process so as to realize continuous and stable material extruding process; and the upper and lower vacuumizing exhaust devices are used for discharging impurities and waste gas to guarantee the quality of the light diffusion plates.

Description

technical field [0001] The invention relates to the technical field of equipment for producing light diffusion plates, in particular to a co-rotating twin-screw compound extruder for producing light diffusion plates and its production process. technical background [0002] The light diffusion plate is through chemical or physical means, using the physical imagination of refraction, reflection and scattering when the light encounters two media with different refractive indices on the way, through the substrates such as PMMA, PS, PS, PP, etc. Inorganic or organic light diffusing agents are added to the foundation, or the light is artificially adjusted through the array arrangement of the micro-feature structure on the surface of the substrate, so that the light can be refracted, reflected, and scattered in different directions, thereby changing the path of the light and realizing the full intensity of the incident light. Scattering creates the effect of optical diffusion. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/06B29C47/40B29C47/60B29C47/62B29C47/76B29C47/92B29C48/76B29C48/92
CPCB29C48/21B29C48/402B29C48/565B29C48/575B29C48/655B29C48/763B29C48/767B29C48/92B29C2948/92704B29C2948/92885
Inventor 陈志超
Owner 雄县钰泰橡塑制品有限公司
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