| 摘要 |
A plastifying apparatus is disclosed. A rotatable roller has arranged angularly spaced with reference to its periphery a plurality of gap-forming elements each of which defines with the periphery a wedge-shaped gap which tapers in direction of rotation of the roller. Feed means feeds material to be plastified into the first one of the gaps for successive movement through this and the following gaps as the roller rotates, whereby the material undergoes successive plastification steps.
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