| 摘要 |
The compressing zone is formed by a tunnel (13) narrowing to its end (4A). The tunnel has an under side (14) which inclines diverging in the transport direction (15) and evolves into an outlet part (16). It is angled (B) in relation to the compressing screw (5) central axis (17) and has a counterpiece roof (21), against which a plug is arranged to be formed. The cross-section surface (A) in the narrowing tunnel reduces continuously forward to the angled outlet part (16). The narrowing tunnel under side (14) has sloping connecting bottom walls. The counterpiece roof in the outlet part narrows towards the roof centre (22). From the roof centre part side parts (23) are inclined downwards towards fixture flanges with a flange on each side of the roof centre part. The roof extends horizontally. |
