| 摘要 |
There is described an improved method of cooling a blank mould used for the formation of a parison in glassware forming apparatus. Jets of cooling gas are delivered on to the outer mould surface through vertical rows of apertures and the gas which impinges on the outer mould surface is prevented from rebounding away from the mould surface but is caused to flow through a confined space close to the mould surface so that the cooling gas removes the boundary layer of air which is in contact with the outer mould surface and thereby markedly improves the cooling effect of the gas. Between the vertical rows of apertures there are provided vertical channels into which the cooling gas can expand and through which it will exhaust after it has effected cooling of the outer mould surface.
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