Gas injection moulding method and apparatus
AssigneeUniversity of Warwick
InventorsRui Magalhaes, Gordon Smith
Life of this patent
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Abstract
A gas injection moulding method comprising injecting a melt into a mould and injecting gas into the melt to form a gas cavity in the melt wherein the melt is cooled by use of injection gas cooled to below the external ambient air temperature and/or by a continuous flow of injection gas through the mould.
Claims13
1-30. (canceled)
A gas injection moulding method comprising injecting a melt into a mould and injecting an injection gas into the melt to initially form a gas cavity in the melt, wherein the injection gas is cooled to below the external ambient air temperature before being injected into the melt.
A gas injection moulding method comprising injecting a melt into a mould and injecting an injection gas into the melt to initially form a gas cavity in the melt, utilising injection gas having a temperature lower than that of ambient air temperature.
Dependencies are inferred from the claim text.