NP Rotoplast Water Storage Tank Roto Molds

Rotational moulding is ideal for making hollow articles such as water tanks. This is because the process provides a number of key benefits, including low costs, rust resistance and high levels of strength.Blow molding forms a plastic tank by inflating or blowing a molten thermoplastic tube, parison, into the two halves of a mold cavity. Though there are variations in the blow molding process, the common factors are melting the plastic resin, forming the plastic, and forcing compressed air into parison.