Name the following plastic moulding processes shown at A and B below - Leaving Cert Engineering - Question 5 - 2008

Blow Moulding involves using a heated thermoplastic tube called a parison, which is extruded between two halves of a mold. Air is blown into the parison, pushing it against the mold walls. This method allows for the creation of hollow items such as bottles and drums. A common component produced through blow moulding is polyethylene bottles.

1. Ensure that the acrylic sheet is securely held and supported during cutting to prevent slipping.
2. Select the correct coarseness of the blade before cutting to achieve a clean cut and avoid cracking.

A plastic dip coating tank consists of a fluidizing unit and an air supply unit. The fluidizing tank has two compartments, one above or porous material while the lower unit contains fluidized powder. Air is supplied to keep the plastic powder fluid, allowing the heated article to dip into the tank and receive an even coating of the fluid. The operation can be visualized as follows:

[Heated article] --> [Fluidized plastic powder] --> [Air flow] --> [Porous material]

Applications include items made from steel, such as washing baskets and kitchen utensils, which all require a plastic dip coating for protection.

Lunch boxes are typically made from thermoplastic materials.

Saucepan handles are usually made from thermosetting plastics.