What does blow moulding primarily use to form containers?

Blow moulding primarily uses HDPE (High-Density Polyethylene) to form containers due to its specific properties that make it particularly suitable for this manufacturing process. HDPE is a thermoplastic polymer characterized by its high tensile strength, resistance to impact, and ability to withstand a wide range of temperatures. These features enable it to be easily heated and moulded into the desired shape when inflated with air in the blow moulding process.

In blow moulding, a preform made of HDPE is softened by heat and then inflated using air in a mould, which results in a hollow container. The material's durability and versatility allow it to be used for a wide variety of applications, including bottles, containers, and other packaging solutions. Its recyclability also adds to its appeal in sustainable manufacturing practices.

Other materials mentioned, such as wood, metal, and glass, do not share the same properties or compatibility with blow moulding. Wood is not suitable due to its rigidity and inability to form seamless hollow shapes. Metal presents challenges in terms of both processing temperature and weight. Glass, while it can be moulded, requires different techniques, such as blow blowing or stretch blow moulding, which are not classified as blow moulding in the same context as