Product category:
Materials processing and testing
News Release from: Warwick Moulding Technology | Subject: KoolGas
Edited by the Engineeringtalk Editorial
Team on 28 March 2003
Cooled gas system speeds injection
moulding
KoolGas is a novel cooled-gas-assisted injection-moulding technique developed by the Warwick Manufacturing Group, a leading research institute at the University Of Warwick.
KoolGas is a novel cooled-gas-assisted injection-moulding technique developed by the Warwick Manufacturing Group, a leading research institute at the University Of Warwick Parts that have been produced using KoolGas, cool and form 40% faster than with conventional gas-assisted injection-moulding (GAIM) methods, thus increasing plant productivity significantly
This article was originally published on Engineeringtalk on 3 Sep 2001 at 8.00am (UK)
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Other benefits include improved and consistent quality, its applicability to all polymers, its environmental friendliness, smooth bore profiles, dimensional stable parts and controlled crystallinity.
The new KoolGas process provides major benefits over established gas-assisted injection moulding.
It uses a cryogenic heat exchanger to provide high-pressure nitrogen to temperatures as low as -196C.
Ordinary GAIM methods have been used by plastics manufacturers to reduce the weight and hence, reduce cycle times when moulding plastic components.
Weight reduction is achieved by gas displacing unnecessary hot plastic from the component's core.
Using KoolGas results in even more savings, thinner walls and smooth bores.
The controlled surface cooling produces a balanced crystallisation of polymers, thus resulting in significantly less "warpage" and reduced stress.
Furthermore, KoolGas integrates easily with any existing gas-assisted injection moulding system requiring neither a change of process nor material nor tool change.
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