| 英文摘要 |
This project is aimed at innovative research and development technology for waste label processing (1) absorption of bricks (2) decolorization technology (3) dehydration/purification (4) waste label sorting and remaking plastic secondary material technology (5) polymer blending Modification (6) viscosity/toughness modulation, not only (1) reducing the high processing cost of waste label processing by the processing plant, but also (2) reducing the space cost of temporary storage of waste labels in the plant if the incinerator is shut down for maintenance , and additionally (3) Provide solutions for value-added applications of waste label recycling (activated carbon, plastic secondary materials, etc.) to assist processing companies in reducing the volume and volume of waste labels, greatly reducing volume and weight, and reducing removal and disposal costs. The results showed that the analysis results were inherent viscosity 0.75~0.80, moisture content 0.4%, false specific gravity 0.2+0.05 g/cm3, PVC content 300 ppm, metal 10 ppm, suspended solids (such as PE, PP, Glue) 50 ppm, total impurities ( Including items 4~6 and other impurities) 500 ppm, thickness 1.0mm-2.5mm. Adjust the density of the calcium chloride (CaCl2) solution to be between 1.05 and 1.20g/cm3, using the density difference sorting technology included: (1) As the density interval on the waste label material is large, it is easy to separate the upper layer and the lower layer, (2) Sinking the material is PET and PVC, and the floating material is impurities such as OPS. (3) The waste label sorting process is a. Waste labels are fed into the washing tank in batches for cleaning. b. The sorting specific gravity tank (layered, floating material (< 5% impurity) and sinking material (>95% APET, amorphous PET material)). c. Separating and removing impurities, retain 95% PET, then enter decolorization treatment process. About the decolorization process is distinguished as a. waste PET labels into the ultrasonic vibration tank with ethyl acetate (C4H8O2). b. Washing. c. Filter (solid-liquid separation), 4. Dry and recycle PET secondary materials. The result of the decolorization experiment is only in 30 seconds to achieve the printing layer peeling off the plastic layer, and the agent can be decolorized many times. The final goal is mass production. The applications including (1) SRF (Solid Recovered fuel) (2) APET wood-plastic composite material (3) APET foam products (4) PET strapping (5) A-PET antistatic composite materials.
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