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Water injection technology (WIT) is heavily based on gas injection technology (GIT),
but is nevertheless a new process. Both processes come under the collective term
“fluid injection technology”.
The versatile ARBURG injection moulding machines can be used for both gas and
water injection technology. The advantages of both processes are the savings in
material which bring about cost savings.
The areas of application are also comparable – moulded parts with thick walls,
partial reinforcement and ribbed constructions, or parts where cores are to be
replaced by a hollow space.
However water has some decisive advantages over nitrogen. Water is available
everywhere at a low cost, it can be used again and also guarantees effective
cooling. In comparison to gas injection technology, the cooling time can be
reduced by up to 70 percent with the use of water injection technology.
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