| 摘要 |
The increasingly high standards of consistency and uniformity demanded of cold feed rubber extruders are met by providing notches (27) in the flights of the screw at least in the feed-inlet (13) of the extruder. The notches (27) are at a lead-angle greater than that of the extruder screw flights, so to pull the rubber and advance it positively. Throttling means (22, 23) are used to adjust the amount of squash-back and there is an independently variable-speed drive for a feed roller (14) in the feed inlet (13). |
