What Is The Process?

Blow Moulding – The extruder unit takes the raw plastic material from a hopper and is heated from a solid state to a soft state which is then pushed out of the extruder into the die which creates the outline shape. The Parison is the heated plastic material in a long thin tube shape which the mould will then clamp around

Air or gas is blown into the centre of the Parison which forces the molten plastic to the walls of the mould. Chilled water is passed through the mould casing cooling the plastic to solidify it in the shape of the mould

The hydraulic motors open and close the Mould around the Parison, when the cooling is complete it opens apart realising the completed final product

Product Example: Plastic Bottles and Containers

Full Turnkey Solutions

Aqua’s aim is to build a life-long relationship with our customers, becoming essentially a “one stop shop” for all your temperature control requirements, for now and the future. The three divisions of our business – Sales, Hire & Service – enable us to help clients every step of the way.

Our USP is our ability to offer clients a complete turnkey solution. We’ll work with you from initial site visit and system design to installation and commissioning. Our services include:

  • Free design consultancy, including AutoCAD drawings, 3D modelling and energy calculations
  • Mechanical and electrical installation – encompassing civil works, offloading & positioning, pipework installation, mains power and cabling, all CDM compliance, full project management and delivery
  • Aftersales support – including preventive maintenance plans to maximise product lifespan and efficiency

Our business is built on our core values of technical excellence, care, integrity and a “can do” attitude. We train all our people to be specialists in what they do – innovative engineers dedicated to providing practical, effective and efficient solutions supported by second-to-none customer service.

Case Studies

Typical Products Used In The Packaging, Plastics & Rubber Industry

Cooling Towers

ENR Chillers

Free Cooling

Adiabatic Coolers

Blow Moulding Applications Considerations

  • What is the temperature of the chilled water required?
  • What water pressure do you require at the tools?
  • What is your plastic throughput/hour or shot weight and cycle time?
  • What type of plastic is being used?
  • Do you require any anti-freeze protection?
  • What water pressure do you require at the heat exchanger?
  • What is the hydraulic motor input power?

Why Is Cooling Required For The Blow Mould Process?

Mould cooling; there are cooling pass-ways in the mould, cooling water flows around these pass-ways to remove the heat from the product. This transfers the heat into the water.

Hydraulic oil cooling; all the robotic parts on the machine are driven by hydraulics. The hydraulic oils heats up when the hydraulic pump runs. The hydraulic oil passes through a heat exchanger to remove the heat from the hydraulic oil, water is passed through the secondary circuit removing the heat from the oil.

How To Calculate The Cooling

Tool Cooling = Plastic through put kg/hr (X) plastic factor (/) 860 (=) Cooling Duty in KW

Hydraulic Cooling = Hydraulic motor size (X) 0.4 (=) Cooling Duty in KW

You May Also Want To Consider

Sheet Extrusion

Injection Moulding






blow moulding


Why Call Aqua?

For Aqua temperature control is at the heart of everything we do.

Our range of temporary heating equipment offers boilers up to 1.2MW+, gas, oil, electric or dual fuel powered. On the cooling side, our products include commercial chillers for process and HVAC applications, portable air con units and adiabatic and air blast coolers.

We pride ourselves on offering our customers the most effective and efficient solution for their specific requirements. For more information on why Aqua Hire should be your number one supplier when it comes to temperature control call the team today on 0333 004 4433.