Stationary-pressure apparatus for producing spun-bond web

Details Stationary-pressure apparatus for producing spun-bond web Stationary-pressure apparatus for producing spun-bond web

D - Textiles, Paper

04

H

D04H 1/54 (2006.01) D01D 4/00 (2006.01) D04H 3/02 (2006.01)

Patent

CA 2147690

Nonwoven spun-bond is produced by a stationary pressure apparatus in which the shaft below the spinneret has an inlet section followed by a downwardly converging intermediate section, a drawing section and a diffuser opening above the collecting belt through which air is drawn by a suction device. The process air velocity profile has an intersection point with the drawing value at the intermediate section and the distance between the intersection point and the spinneret is smaller than the distance between the intersection point and the bottom end of the drawing section.

Filé-lié non tissé produit par un appareil à pression stationnaire pour lequel l'arbre situé sous la presse à filer comporte une section d'entrée suivie d'une section intermédiaire convergeant vers le bas, ainsi qu'une section d'aspiration et une ouverture de diffuseur, au-dessus de la courroie de récupération, par laquelle l'air est aspiré au moyen d'un dispositif approprié. Le profil de vitesse de déplacement de l'air nécessaire au procédé comporte un point d'intersection avec la valeur d'aspiration au niveau de la section intermédiaire, la distance entre ce point d'intersection et la presse à filer étant plus faible que la distance entre le point d'intersection et l'extrémité inférieure de la section d'aspiration.

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