| 摘要 |
The material web (3) to be treated is supplied continuously to a first material web store (1) and stored there in sections, is removed therefrom by being pneumatically conveyed and is hurled compressively against a first impact surface (4). Thereafter, the material (3) compressed in this way is supplied to a second material web store (2) and stored there in sections. Then, the same procedure is carried out in the opposite direction of conveying from the second material web store (3) against a second impact surface (4') and thereafter to the first material web store (1), but with a smaller length advance of the material web, this alternating movement is repeated alternately, and the difference in advance between these length sections of material web moved to and fro is guided away continuously from the second material web store (2).
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