D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 7/00 (2006.01) D21G 9/00 (2006.01)
Patent
CA 2458036
The invention relates to apparatus for leading a web threading tail over an empty space. The empty space is formed between two surfaces, between which the apparatus (10) is arranged. The apparatus (10) includes a belt loop (28) permeable by air, which is supported by turnover rolls (29, 30). Within the belt loop (28) at least one foil strip (31) is arranged for creating a vacuum effect in the part of the belt loop (28) that transports the web threading tail (16) from the surface preceeding the empty space, and to lead it to the following surface, a vacuum effect is arranged in connection with the first turnover roll (29) of the said turnover rolls (29, 30).
La présente invention a trait à un appareil destiné à la conduite d'une pointe d'engagement sur un espace vide. L'espace vide est constitué entre deux surfaces, entre lesquelles est disposé l'appareil (10). L'appareil (10) comporte une boucle de courroie (28) perméable à l'air, qui est portée par des rouleaux réversibles (29, 30). Au sein de la boucle de courroie (28) est disposée au moins une bande de feuille (31) destinée à générer un effet de succion dans la partie de la boucle de courroie (28) transportant la pointe d'engagement de la bande continue (16). Afin de détacher la pointe d'engagement de la bande continue (16) de la surface se trouvant avant l'espace vide, et de la conduire à la surface suivante, on crée un effet de succion par rapport au premier rouleau réversible (29) desdits rouleaux réversibles (29, 30).
Ahvenainen Pasi
Hietanen Pekka
Koljonen Veli-Pekka
Lehtonen Matti
Mankki Ari
Metso Paper Inc.
Sim & Mcburney
LandOfFree
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