Product category:
Injection moulding
News Release from: Warwick Manufacturing Group | Subject: KoolGas cooled gas assisted injection moulding
Edited by the Manufacturingtalk Editorial
Team on 16 May 2003
Cooled gas technique improves injection
mouldings
A novel cooled gas assisted plastics injection moulding technique cools and forms 40% faster than with conventional gas assisted injection moulding methods as well as improving quality.
KoolGas, the novel cooled gas assisted injection moulding technique has been developed by the Warwick Manufacturing Group, a leading research institute at the University Of Warwick and is now commercially available 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 Manufacturingtalk on 29 Aug 2002 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 -196degC.
Ordinary GAIM methods have been used by plastic 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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