Polyethylene, in its various forms, remains the material most widely used in rotational moulding: this material covers 80 to 90% of all polymers. However, other polymers are incorporated into the rotational moulding process to meet specific requirements. To be rotational moulded, plastics must meet two conditions: High thermal stability and very low melt viscosity.
Polyethylene is a low-cost standard plastic. There are several types: HDPE (High Density Polyethylene), LDPE (Low Density Polyethylene) and copolymers such as LLDPE. It is one of the most widely used materials for rotational moulding. This material offers interesting characteristics (lightness, ease of transformation, chemical resistance), particularly for the manufacture of various products: containers, storage tanks, urban furniture, design furniture, buoys, etc.
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Polyamide is a widely used engineering plastic. Depending on its chemistry, it offers a wide range of properties (rigidity, lightness, chemical resistance, metal replacement, etc.). In rotational moulding, it is found in PA6 or PA12 form and can be used to manufacture oil and fuel tanks for small production runs of vehicles (lorries, tractors, public machinery, etc.).
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Polycarbonate is the second most widely produced engineering plastic after polyamide. When rotational moulded, it can be used to produce transparent parts with excellent impact resistance.
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PVC is a very low-cost plastic and one of the most widely used materials for rotational moulding, which can be flexible or rigid. In rotational moulding, it can be used to make flexible bags or sports articles (balls, etc.).
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Polyurethane is an elastomer material offering excellent abrasion resistance. In rotational moulding, it is used in particular in the manufacture of technical parts requiring wear resistance.
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Polyoxymethylene is an engineering plastic with excellent chemical and abrasion resistance. It can be used to manufacture tanks.
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Polyvinylidene fluoride is a thermoplastic fluoropolymer with excellent resistance to corrosive chemicals. It is mainly used to manufacture tanks for the chemical industry.
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Thermoplastic copolyester is an engineering plastic between elastomer materials and engineering thermoplastics, offering a good combination of strength and flexibility and is an alternative to rigid materials where good impact absorption is required.
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Polystyrene is a standard plastic used in many applications. It can be used to produce aesthetically pleasing parts with good rigidity.
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Polylactic acid is a biosourced plastic derived from renewable resources (corn, wheat).
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Ethylene vinyl acetate is a flexible plastic based on LDPE with a vinyl acetate monomer. It can be an alternative to flexible LDPE or PVC.
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