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PCR (Polymerase Chain Reaction) reclaimed material granulation process for improving purity

A technology of recycled material and granulation, applied in the field of recycled material granulation process, can solve the problems of application field limitation and high impurity content, and achieve the effects of strong adaptability and high-end, stable material quality and reasonable process layout.

Pending Publication Date: 2022-05-13
SHANGHAI CHANGWEI JINCI ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing PCR recycled material granulation process often adopts the method of direct production, extrusion, cooling, and granulation. This method is relatively traditional, and the final product has a high impurity content, which is harmful to the application. The field is greatly restricted

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  • PCR (Polymerase Chain Reaction) reclaimed material granulation process for improving purity
  • PCR (Polymerase Chain Reaction) reclaimed material granulation process for improving purity
  • PCR (Polymerase Chain Reaction) reclaimed material granulation process for improving purity

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Embodiment Construction

[0069] The present invention will be further described below in conjunction with the accompanying drawings.

[0070] see Figure 1 to Figure 10 , specific embodiment 1: improve the PCR reclaimed material granulation process of purity, comprise the following steps: Step 1, flake reclaimed material path winnowing machine 1 carries out powder filtration impurity removal and primary metal separator 2 carries out metal primary filtration; Step 2 , the flake recycled material is dehumidified through the dehumidification dryer 3, and the humidity of the flake recycled material is controlled at a moisture content ≤ 0.2‰; Step 3, the flake recycled material and the color masterbatch are weighed and measured through the vibrating loss-in-weight scale 4; the step Four, pass through extruder, melt filter 5, air-dry cooling, pelletizer in turn; Step five, carry out metal secondary filtration by vibrating feeder and secondary metal filter 6; Step six, homogenizing tank 7 homogenization . ...

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Abstract

The invention relates to the technical field of granulation. The invention relates to a PCR (Polymerase Chain Reaction) reclaimed material granulation process for improving purity. The process comprises the following steps: step 1, carrying out powder filtration and impurity removal on sheet reclaimed materials through a winnowing machine, and carrying out primary metal filtration through a primary metal separator; step 2, dehumidifying the sheet-shaped recycled materials through a dehumidifying dryer, and controlling the humidity of the sheet-shaped recycled materials to be less than or equal to 0.2 per mill; step 3, weighing and metering the sheet-shaped recycled material and the color master batch through a vibration weightlessness scale; step 4, sequentially passing through an extruder, a melt filter, an air-drying cooler and a granulator; 5, secondary metal filtering is conducted through a vibration feeder and a secondary metal filter; and step 6, homogenizing in a homogenizing tank. According to the invention, a traditional recycled material granulation process is optimized. Dust filtration, primary metal filtration, dehumidification drying, impurity filtration, secondary metal filtration and product homogenization are realized through multiple procedures, so that the purity of the PCR material is improved, the product performance is improved, and the stable and reliable product quality is ensured.

Description

technical field [0001] The invention relates to the technical field of granulation, in particular to the granulation process of recycled materials. Background technique [0002] At present, with the implementation trend of the global circular economy, more and more companies in the plastics industry have begun to vigorously recycle and develop and utilize PCR raw materials (that is, Post Consumer Recycling, referred to as PCR)). Through recycling, grading, re-granulation, and re-application, the plastic products that have been used by consumers can be recycled or even more. [0003] However, the existing PCR recycled material granulation process often adopts the method of direct production, extrusion, cooling, and granulation. This method is relatively traditional, and the final product has a high impurity content, which is harmful to the application. The field is greatly limited. Contents of the invention [0004] Aiming at the problems existing in the prior art, the pr...

Claims

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Application Information

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IPC IPC(8): B29B9/06B29B17/02B29B17/00
CPCB29B9/06B29B17/02B29B17/00B29B2017/0272B29B2017/0241Y02W30/62
Inventor 张斌陈静黄文波黄桂珍李帅勇
Owner SHANGHAI CHANGWEI JINCI ENG PLASTIC