What are the raw materials for rotomolding?

Rotomolding, also known as rotational molding, is a manufacturing process used to produce hollow plastic parts. The raw materials commonly used in rotomolding include:

1. Polyethylene (PE): High-density polyethylene (HDPE) and low-density polyethylene (LDPE) are the most common types of polyethylene used in rotomolding due to their excellent moldability and durability.

2. Polypropylene (PP): Polypropylene is another thermoplastic polymer that is occasionally used in rotomolding, offering good chemical resistance and toughness.

3. PVC (Polyvinyl chloride): PVC is sometimes used in rotomolding applications, especially when specific chemical resistance or rigidity is required.

4. Nylon: Nylon is a strong and durable thermoplastic material that can be used in rotomolding for applications requiring high impact resistance and stiffness.

5. Cross-linked polyethylene (XLPE): XLPE is a type of polyethylene with improved mechanical properties, such as increased strength and resistance to heat and chemicals, making it suitable for certain rotomolding applications.

6. EVA (Ethylene-vinyl acetate): EVA is a copolymer of ethylene and vinyl acetate, offering flexibility, impact resistance, and transparency. It is sometimes used in rotomolding for specialized applications.

These raw materials are typically supplied in the form of granules or powder, which are melted and then rotationally molded into the desired shape inside a heated mold. The choice of material depends on factors such as the intended application, desired properties of the final product, and cost considerations.