Since the recovery of the investment in Waste Plastic Recycling Plant is very rapid, this industry is growing very rapidly all over the world. The process for recovering plastic wastes comprises the following five main steps: sorting, crushing, washing, dehydrating and drying flake and pelletizing. Among which, sorting is the critical step. Plastic wastes must be sorted according to soft (ABS, HIPS, PC, AS ,PP, Acrylic), mild(PVC) and hard material(PET) since crushing, washing, and pelletizing are different for each category. The higher the homogeneity of the sorted plastic waste is, the better it is for subsequent steps. For example, PVC bottles are hard to tell apart form PET bottles, but one stray PVC bottle in a melt of 10,000 PET bottles can ruin the entire batch. It is understandable why purchasers of recycled plastic want to make sure that the plastic is sorted properly.
Waste plastic is a valuable resource and it is highly important for the future of our environment that waste plastic is diverted from landfill in order to be recycled. Recycling a single plastic bottle can conserve enough energy to light a 60W light bult for up 6 hour.
By recycling our plastic wastes, we can all make a big contribution to protecting the environment.
A huge industry can be created if all our recyclable waste streams are diverted from landfill to processing plants.
After collection, the plastic bottles are returned to our sorting facility where the bottles are sorted by colour as well as the following polymer types:
- High Density Polyethylene (HDPE).
- Low Density Polyethylene (LDPE).
- Polyethylene Terephthalate(PET).
After sorting, the bottles are granulated into small flakes, which are then put through a washing process which removes all contaminants such as, food residues, lables, glue, and any other contaminants. After washing and drying, the flakes are used as follows:
Natural HDPE: repelletized and used in the manufacture of coloured plastic product such as wheelie bins, crates and drums.
Coloured HDPE: repelletized and used to produce black materials for use in application such as drainage pipe manufacturing and the moulding of automotive components.
Natural LDPE: repelletized and used to produce blow-moulded plastic packaging.
Clear PET: extruded back intro rolls of sheet which are then thermoformed into new trays for packaging.
Coloured PET: used to produce fibres which are then used in the textile industry.