Post-Consumer Plastic Recycling System
Lindner’s multi-stage processing facility for post-consumer plastic is in a class of its own. Perfectly matched components guarantee high output quality. Robust high-end shredding, washing and drying components ensure smooth 24/7 operation with low maintenance and consistently high throughput. It has never been so easy to guarantee the ideal input for subsequent processes.
Shredding is an essential step in a smooth-running process chain. Untreated plastic waste either in baled or loose form is fed into the machine with wheel loaders or a conveyor belt.
The output is consistent, the cut precise and 90% of the output will be smaller than 60 mm with an output of up to 5 metric tons per hour.
2. Prewashing and Foreign Matter Separation
The requirements for prewashing are clearly defined. Pre-shredded plastics are often heavily contaminated and loaded with foreign matter. The rafter’s well-engineered technology effectively separates abrasive matter and prepares the material for all following processes.
Now free from foreign matter, the material is granulated using a wet granulator that screens the material to the preferred particle size to make recycling particularly efficient.
4 Plastics Separation
Categorising plastics according to their specific weight. This step is executed with Lindner Washtech’s gravitator, a machine that combines state-of-the-art features with the tried-and-tested sink-float method. In this process, not only is it important that the output material is homogeneous, but the machine’s construction must also be compact and efficient.
5 Friction Washing
Efficient washing through friction. The Lindner Washtech friction washers clean even the smallest particles very effectively. The machine size can be adjusted to the customer’s specific throughput requirements, achieving rates of up to 4 metric tons per hour. The machine’s screens and paddles are also customisable.
6 Mechanical and Thermal Drying
The shredded and washed material is fed into a centrifuge where the plastic flakes are dried in controlled conditions. The resulting centrifugal forces contribute to cleaning and drying the materials. Finally, the material is thermally dried and can subsequently be transferred for extrusion.
Processing plastics waste for a resource-saving plastic life cycle concept
Post-consumer waste is created by consumers, e.g. individuals and households. While in the past plastic waste used to be incinerated, these days it is considered an important raw material. To utilise post-consumer plastics, the aforementioned process is necessary. For recycling purposes, the material must be as clean as possible to prevent damage to machines and pre-empt inferior-quality products.
Lindner relies on tried-and-tested technology to guarantee high-quality material. The field of post-consumer plastics in particular demands high machine standards since the material might not only contain abrasive matter but also food scraps. The foreign object-resistant shredder and the high-end washing technology solution ensure a homogeneous product ready for extrusion. Manufacturing companies can then turn the resulting lenticular plastic raw materials into the final product.
Post-Consumer Plastics Recycling
- Particle size: less than 10 mm
- Throughput: up to 2000 kg/h
- Subsequent process: extrusion