A multi-axis variable-speed hot washing module and a hot washing method thereof are provided. The multi-axis variable-speed hot washing module includes a storage assembly, a dehydration assembly, and one or more multi-axis variable-speed hot washing machines, where the multi-axis variable-speed hot washing machine is connected to the storage assembly and the dehydration assembly. Batches of materials are stored in the storage assembly. When cleaning, the materials are put from the storage assembly into one or more multi-axis variable-speed hot washing machines, and medicinal water is added. The multi-axis variable-speed hot washing machine replaces functions of a hot washing machine, a screw, and a friction machine, and has relatively large mechanical friction on the materials during cleaning. The materials after being hot washed by the multi-axis variable-speed hot washing machine are transported to the dehydration assembly for dehydration, so as to implement separation of cleaning water and the materials.

A method for obtaining mechanically recoverable recycled material from multilayer PET (polyethylene terephthalate) containers of post-consumer and/or post-industrial origin involves cleaning the containers, crushing them into pieces, mixing the pieces with a compatibilizing mixture and melting the mixed product to obtain a continuous filament. The compatibilising mixture is formed by at least: 10-45% thermoplastic polyolefin matrix; a reagent of plant origin in a percentage of less than 7.5% of the total mixture; and a rosin-based tackifier in a percentage of less than 7.5% of the total mixture.

A method of decontamination for decontaminating plastics in solid particulate form includes the steps of: loading the plastics into a tank; introducing a liquid into the tank so that the liquid is in contact with the plastics; hitting the plastics in the tank and the liquid in contact with the plastics with ultrasonic waves. A decontamination apparatus actuates the decontaminating method and a plant includes the decontamination apparatus.