Plastic recycling methods

1. Plastic process scrap recycling
2. Post use plastic recycling
3. Machanical recycling
4. Chemical or feed stok recycling

Advantages of plastic recycling

• Oil conservation.
• Reduction ingreenhouse gases.
• Conserving our energy emission.
• Save our landfills.

Plastic identification codes

Seven groups of plastic polymers which has specific properties.

Each of group has plastic identification code.

• Polyethelene , Terephthalate
• high density polyethelene
• polyvinyl chloride
• low density polyethelene
• polypropelene
• polystyrene
• polycarbonate or ABS

Applications

1. PET
2. PVC
3. HDPE
4. Other plastics

Processes

• Monomer recycling
• Thermal deploymerization
• Heat compression

Introduction

Plastic recycling is the process of recovering scrap of waste plastic and reprocessing the material in to useful products.

Plastic Recycling

Plastic recycling is the process of recovering scrap or waste plastics and reprocessing the material into useful products, sometimes completely different in form from their original state. For instance, this could mean melting down soft drink bottles then casting them as plastic chairs and tables.
Before recycling, plastics are sorted according to their resin identification code, a method of categorization of polymer types, which was developed by the Society of the Plastics Industry in 1988. Polyethylene terephthalate, commonly referred to as PET, for instance, has a resin code of

When compared to other materials like glass and metal materials, plastic polymers require greater processing to be recycled.[citation needed] Plastics have a low entropy of mixing, which is due to the high molecular weight of their large polymer chains. A macromolecule interacts with its environment along its entire length, so its enthalpy of mixing is large compared to that of an organic molecule with a similar structure. Heating alone is not enough to dissolve such a large molecule; because of this, plastics must often be of nearly identical composition in order to mix efficiently.

Plastic Recycling machines