The world of plastics, broadly categorised into thermoplastics, thermoset plastics, and elastomers, follows a streamlined system of supply, processing, and delivery.

Thermoplastics, like polyethylene and polypropylene, are primarily sourced from petrochemical derivatives. They are easily processed by methods like injection moulding, blow moulding, and extrusion. When heated, they become malleable, allowing manufacturers to shape them into desired forms. Post-use, these plastics can be reheated and reshaped, promoting recyclability. They are usually delivered as pellets or sheets to industries ranging from packaging to automotive.

Thermoset plastics come from similar raw material sources but differ significantly in processing. Once set, they can’t be re-melted, thanks to their cross-linked molecular structure. Common processing methods include compression molding and reaction injection moulding. Epoxy resins and phenolics, used in electronics or automotive parts, are common thermosets. These are often supplied as resins and, once moulded, are irreversible in form.

Elastomers, or rubbery materials, have a unique elasticity. Natural rubber is sourced from latex-producing plants, while synthetic elastomers like polyurethane are derived from petrochemicals. Processing often involves techniques like vulcanisation, which introduces cross-links to provide elasticity. They’re commonly supplied as sheets or specific shapes and find their way into products like tires, seals, or footwear.

Regardless of the category, efficient supply chains ensure these plastics reach industries ready for product-specific applications.