Thermobonded and perforated nonwoven
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United States of America Patent
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Mar 20, 2007
Grant Date -
Oct 6, 2005
app pub date -
Jan 14, 2005
filing date -
Jul 16, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a method for the manufacture of a perforated nonwoven material, whereby a prebonded nonwoven with embossing points is guided to a nonwoven perforation device, needles of a needle roller engage into the prebonded nonwoven and perforate it, and the perforated nonwoven material then undergoes further processing. A ratio is set between the number of needles to the number of embossed points of between 0.15 and 0.25 and a ratio of hole size to embossed point size of between 0.15 and 0.25.
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