Rotational Moulding

Question 1

Define a rotational mould

Answer 1

A rotational mould rotates in all directions to coat the inside of the mould with plastic

Question 2

What is rotational moulding used to produce?

Answer 2

products that are hollow with thicker walls such as footballs, road cones, large water and oil tanks.

Question 3

briefly explain the 4 step process of rotational moulding

Answer 3

1. Plastic pellets are placed in the mould, and the entire mould in placed in an oven.
2. The mould is rotated constantly over two axes so that the plastic coats the inside of the mould evenly.
3. The mould is placed in a cooler or sprayed with water while still rotating to set the plastic.
4. The mould is opened and the product is ejected.