| 摘要 |
The method comprises feeding the mobile composition to the mould (10) which extends continuously around a vertical, or horizontal endless path and allowing the composition to set within the mould, preferably by cooling it in an air cooled tunnel (18). The mould is preferably a continuous length of a flexible transversely adjacent series of moulds in edge to edge relationship and carrying a series of open topped moulding troughs therein, preferably of silicone or neoprene rubber, and preferably having a bore (30) in thicker wall regions, to render the wall thickness and cooling effect more uniform. <IMAGE> |
