| 摘要 |
There is disclosed a method of conveying and heat-treating an extrudate, which method comprises: introducing the extrudate to be conveyed and heat-treated onto a cushion of gas which gas is at or above a predetermined temperature; causing the extrudate to be conveyed on the cushion of gas; and removing the conveyed and heat-treated article from the cushion of gas. Also disclosed is an apparatus for manufacturing a heat-treated extrudate comprising: (i) an extruder which includes an outlet from which the untreated extrudate is extruded; and (ii) conveying and heat-treating means for conveying and heating the untreated extrudate, said conveying and heating means comprising: an elongate conveyor means (1) communicating with the outlet of the extruder and including, along at least a portion of its length, a plurality of spaced-apart outlets (10, 11) through which a gas at or above a predetermined temperature is passed under pressure thereby to create a cushion of moving gas to convey and heat-treat the extrudate. s |
