B - Operations – Transporting – 31 – F
Patent
B - Operations, Transporting
31
F
B31F 1/00 (2006.01) A61F 13/15 (2006.01) B32B 29/00 (2006.01) D21F 1/04 (2006.01) D21F 11/04 (2006.01) D21F 11/14 (2006.01) D21H 11/16 (2006.01) D21H 21/22 (2006.01) D21H 27/30 (2006.01) D21H 27/38 (2006.01)
Patent
CA 2466731
A process for increasing the tactile properties of a base web without adversely effecting the strength of the web is disclosed. In general, the process includes the steps of placing a base web in between a first moving conveyor and a second moving conveyor. The conveyors are then wrapped around a shear inducing roll which creates shear forces that act upon the base web. The shear forces disrupt the web increasing the softness and decreasing the stiffness of the web. The shear inducing roll typically has a relatively small diameter. In some applications, more than one shear inducing roll may be incorporated into the system.
L'invention concerne un procédé permettant d'augmenter les propriétés tactiles d'un voile de base sans nuire à sa résistance. En général, le procédé comprend les étapes consistant à placer un voile de base entre un premier convoyeur en déplacement et un second convoyeur en déplacement. Les convoyeurs sont ensuite enroulés autour d'un rouleau induisant un cisaillement, ce qui crée des forces de cisaillement qui agissent sur le voile de base. Ces forces de cisaillement déstructurent le voile de sorte à en augmenter la douceur et à en diminuer la rigidité. Le rouleau induisant un cisaillement présente typiquement un diamètre relativement petit. Dans certaines applications, plus d'un rouleau de cisaillement peuvent être incorporés au système.
Bakken Andrew P.
Runge Troy M.
Zwick Kenneth J.
Borden Ladner Gervais Llp
Kimberly-Clark Worldwide Inc.
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