Plastic recycling production line quality appraisal

Plastic recycling is an important measure to solve environmental pollution and resource waste. In the plastic recycling industry, plastic recycling production lines are a new option that convert waste PET plastic bottles into high-quality recycled particles through high-efficiency crushing and separation technology.
plastic recycling production line is an automated production line consisting of multiple equipment, including feeding system, crusher, washing system, separation system and drying system. Wasted PET bottles enter the crusher through the feeding system and are crushed into small particles. The small particles are then washed through a scrubbing system to remove impurities and contaminants. Next, the PET pellets are separated from other plastic materials through a separation system. Finally, the PET particles pass through the drying system to obtain dry recycled particles, which can be used to make new PET products.
Zhongke Testing and Appraisal Institute can provide quality appraisal services for plastic recycling production lines and make accurate appraisals in aspects such as production line design analysis, load analysis and product quality analysis.

According to different production processes and types of recycled raw materials, plastic recycling production lines can be divided into the following categories:
flotation plastic recycling production line: mainly processes mixed waste plastics, using improved flotation separation technology to separate plastic particles of different densities to reduce the amount of subsequent manual screening.
magnetic separation plastic recycling production line: It can process mixed waste plastics and waste plastics containing iron substances, remove foreign matter through magnetic separation technology, and then use mechanical separation or flotation technology for reprocessing.
dissolving plastic recycling production line: uses dissolving technology to dissolve waste plastics into liquid state, and then separates and extracts recyclable polymers through precipitation, evaporation, etc.
heating and pressure plastic recycling production line: uses high temperature and high pressure to deform waste plastics, and then processes them into granules for re-production through solidification, cutting and other processes.

GB/T 39171-2020 Technical specifications for waste plastic recycling
GB/T 35265-2017 Characterization characteristics and detection methods of polypropylene (PP) plastic recycling materials
GB/T 35262-2017 Characterization characteristics and detection methods of polyvinyl chloride (PVC) plastic recycling materials
GB/T 35173-2017 Characterization characteristics and detection methods of polyethylene terephthalate (PET) plastic recycling materials
GB/T 30102-2013 Plastics Plastic waste recovery and recycling guide
SB/T 11149-2015 Waste plastic recycling and sorting technical specifications

The plaintiff and the defendant signed a "Machine Sales and Purchase Contract" on June 1, 2018. The defendant supplied the plaintiff with a mixed plastic crushing, cleaning, separation and recycling line. According to the contract, the goods arrived at the plaintiff's site and were inspected. It was found that there were quality problems in the material of the deep separation tank, the power of the equipment, and the process flow of the equipment. The plaintiff raised quality objections during the acceptance period and requested the defendant to return the goods, but so far the defendant has not received any response. Therefore, the plaintiff went to court as mentioned above.
Our company was entrusted by the court to undertake the quality analysis of the "plastic recycling production line" involved in this case.
appraisal analysis results: The
quality analysis expert group discussed and comprehensively technical analyzed the relevant information, on-site investigation and inspection, and inspection and testing data of the "Plastic Recycling Production Line" involved in the case, and made the following quality analysis opinions:
1) The exposed rotating shafts of the 25-degree water tank, the 13-degree water tank, and the 0-degree water tank are not 316 stainless steel, and some materials in the water are not 316 stainless steel, and do not meet the requirements of the "Technical Contract"; 2) The power displayed on the nameplate of the vertical dehydrator is inconsistent with the flow chart and the power in the "Technical Contract", which will affect the normal operation of the equipment. 3) The addition of augers, dry strippers and bucket elevators as well as the changed air separation unit equipment on site have increased the overall equipment operating power of the production line.