Process for increasing the softness of base webs and products made therefrom
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United States of America Patent
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Aug 19, 2003
Grant Date -
Jan 2, 2003
app pub date -
Jun 28, 2002
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 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 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. Base webs made according to the present invention have been found to have improved void-volume and fuzz-on-edge properties.
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