Thermoplastic elastomer nonwoven fabric roll, and method and...

Details Thermoplastic elastomer nonwoven fabric roll, and method and... Thermoplastic elastomer nonwoven fabric roll, and method and...

D - Textiles, Paper

04

H

D04H 3/08 (2006.01) D04H 3/14 (2006.01) D04H 3/16 (2006.01) D04H 13/00 (2006.01)

Patent

CA 2399142

A method of producing a thermoplastic elastomer nonwoven fabric roll, which comprises the steps of forming a nonwoven fabric (131) in sheet form by stacking melt-spun thermoplastic elastomer filaments on a belt conveyor (115), stripping the nonwoven fabric (131) by guiding it to a rotational roller (2) disposed above the transfer region of the belt conveyor (115), and winding it around a paper tube (132), thus forming a nonwoven fabric roll (130). Since the tension acting on the nonwoven fabric (131) substantially directly acts as the stripping force, the nonwoven fabric (131) can be stripped by only applying a necessary minimum tension thereto. As a result, it is possible to produce a nonwoven fabric roll (130) which is subject to less vertical wrinkle associated with a draw-out tension of not more than 0.25 g/cm/Metuke (a Japanese unit of weight used in some areas of the textile industry) and subject to less change of shape attending on delayed recovery.

L'invention concerne un procédé de production d'un rouleau de nontissé en élastomère thermoplastique, qui consiste à former un nontissé (131) en forme de feuille en empilant des filaments d'élastomère thermoplastique filés à chaud sur un transporteur à courroie (115); à débourrer le nontissé (131) en le guidant vers un rouleau rotatif (2) disposé au-dessus de la zone de transfert du transporteur à courroie (115) et en l'enroulant autour d'un tube papier (132) pour former un rouleau de nontissé (130). Etant donné que la tension exercée sur le nontissé (131) agit quasi directement en tant que force de débourrage, le nontissé (131) ne peut être débourré que par application d'une tension minimale nécessaire sur lui. Comme conséquence, on peut produire un rouleau de nontissé (130) moins sensible au pli vertical associé à une tension de tirage d'au plus 0,25 g/cm/metuke (une unité de mesure de poids japonaise utilisée dans certaines régions de l'industrie textile) et moins sensible au changement de forme relative à une récupération différée.

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