Process for increasing the softness of base webs and products made therefrom
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Apr 15, 2003
Grant Date -
Nov 14, 2002
app pub date -
Dec 10, 2001
filing date -
May 12, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A process for increasing the tactile properties of a base web without adversely effecting the strength of the web is disclosed. In one embodiment, the process includes the steps of placing a creped base web between a first moving conveyor and a second moving conveyor. The conveyors are then wrapped around a shear-inducing roll which creates shear forces and compressive forces that act upon the base web. The shear forces disrupt the web, increasing the softness and decreasing the stiffness of the web. The compressive forces are localized at the areas where the fabric knuckles contact the base web, imparting a unique fabric-imprinted pattern to the web with limited caliper reduction. 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.
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