High-speed spun-bond production of non-woven fabrics

D - Textiles – Paper – 03 – D

Patent

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D03D 11/00 (2006.01) D03D 15/00 (2006.01) D04H 3/00 (2006.01) D04H 3/02 (2006.01) D04H 3/16 (2006.01) D04H 13/00 (2006.01)

Patent

CA 2464202

In combination with a high-speed spun-bond apparatus, rather than using a circulating sieve belt for collecting the stretched filaments and forming the web, a fabric having a 4-shed double layer with support shute weave design is used. This fabric is commonly referred to as a 4B weave and 4B weave with stuffer in center. In general, the fabric has a permeability ranging from 400 to 800 cfm with a woven or pin seam where the seam permeability and caliper varies only slightly with respect to the rest of the fabric.

Un tissu présentant une double couche à quatre foules avec une conception de tissage de trame de soutien est utilisé conjointement à un appareil de filé-lié à haute vitesse, plutôt qu'à une bande de tamis en mouvement, pour recueillir les filaments étirés et pour former le voile. Ce tissu est communément qualifié d'armure 4B et d'armure 4B avec fil de chaîne de force en son centre. En général, le tissu présente une perméabilité comprise entre 400 et 800 cfm et présente une couture tissée ou cousue, la perméabilité et l'épaisseur de cette couture variant seulement légèrement par rapport au reste du tissu.

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