D - Textiles – Paper – 01 – G
Patent
D - Textiles, Paper
01
G
D01G 23/00 (2006.01) D04H 1/72 (2006.01)
Patent
CA 2078532
Abstract The invention relates to a process and an apparatus for the dry forming of a material web from a long-fiber material, wherein fibrous material is blown into a forming space to form a porous material web on a wire passing through the forming space. The dry forming of long fibers in lengths of at least 20 mm is problem- atic. In accordance with the invention, this problem has been solved in such a way that - the fibrous material is blown into the forming space by means of at least one air current (A) that is substantially horizontal and-transverse to the wire, - the fibrous material is guided onto the sur- face of the wire (1) by means of an air current (D) that is substantially vertical and passes through the wire downwardly, - and that the desired material web (F) is formed by the combined effect of said horizontal and vertical air currents. (Figure 1)
Gustafsson Helmer
Pirinen Pentti
Gowling Lafleur Henderson Llp
Yhtyneet Paperitehtaat Oy Walkisoft Engineering
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