SINGLE STAGE PROCESS

PROCESSES INVOLVED IN THE SINGLE-STAGE METHOD

The procedure involved in the transformation of raw materials into a bottle, using the single-stage operation, is outlined below:

• Dehumidifying and drying of PET materials
• Melting and injecting of raw materials into the preform mould through the injection nozzle
• Cooling of the molten material in the preform mould to 120° Celsius
• Transfer of the hot preform mould to a bottle mould to begin the stretch moulding operation

ADVANTAGES OF THE SINGLE-STAGE BLOW MOLDING PROCESS

There are several advantages of the single-stage moulding process, and they include:

• A compact and flexible operation
• A blemish-free bottle
• Control over preform production
• Control over thread start to align with bottle’s shape
• Suitable for blowing rectangular and non-circular shapes