Method for making soft tissue

Details Method for making soft tissue Method for making soft tissue

D - Textiles, Paper

21

F

D21F 11/14 (2006.01) D21F 11/00 (2006.01)

Patent

CA 2307205

An uncreped tissue sheet having improved softness results from supplementally dewatering a wet web to a consistency of greater than about 30 percent using noncompressive dewatering techniques prior to a differential speed transfer and subsequent throughdrying. An air press particularly well suited for providing the supplemental noncompressive dewatering incorporates side and/or end seals to minimize escape of pressurized fluid. A creped tissue sheet can be produced with a variety of manufacturing benefits using the air press.

Pour obtenir une feuille de tissu ouaté sans relief plus douce on effectue l'égouttage additionnel d'une bande humide jusqu'à une concentration supérieure à environ 30 pour cent à l'aide de techniques d'égouttage sans compression avant d'effectuer le transfert à vitesse différentielle et le séchage complet subséquent . Une presse à air particulièrement bien adaptée pour effectuer l'égouttage sans compression supplémentaire comporte des joints latéraux et/ou d'extrémité pour réduire au maximum la sortie de fluide sous pression . A l'aide de la presse à air, on peut produire une feuille de tissu ouaté crêpé dont découlent divers avantages liés à la fabrication .

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