Spray bonded multi-ply tissue

Details Spray bonded multi-ply tissue Spray bonded multi-ply tissue

D - Textiles, Paper

21

H

D21H 27/32 (2006.01) B32B 7/12 (2006.01) B32B 29/00 (2006.01) D21F 9/00 (2006.01) D21F 11/00 (2006.01) D21F 11/04 (2006.01) D21F 11/14 (2006.01)

Patent

CA 2251364

Multi-ply tissue product is bonded by an adhesive spray whose position is controlled so that the web path distance between the spray application (60) and the location where the webs are forced together (48) permits sprayed adhesive to partially but not completely set during travel over that web path distance at operating web speeds. Typically, the web path distance between the nozzle (60) and the location is more than 140 inches. The webs (10, 20) are positioned one in back of the other and each is unwound onto its own carrier roll (42, 44), with the spray (60) positioned between the carrier rolls.

Un tissu multicouche est lié par pulvérisation d'adhésif en un point dont la position est calculée pour que la distance que parcourent les bandes entre le point de pulvérisation (60) et l'emplacement où elles sont appliquées l'une contre l'autre (48) permette à l'adhésif pulvérisé de prendre partiellement durant le trajet qu'elles effectuent sur cette distance à une vitesse de défilement normale. La distance de parcours des bandes entre la buse (60) et l'emplacement considéré est généralement supérieure à 140 pouces. Ces bandes (10, 20) sont positionnées l'une sur le dos de l'autre et chacune d'elle est déroulée de son propre rouleau porteur (42, 44), le pulvérisateur (60) se trouvant placé entre les rouleaux porteurs.

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