Perforated non-woven fabric and its manufacturing method
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United States of America Patent
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Feb 15, 2022
Grant Date -
May 2, 2019
app pub date -
Aug 22, 2017
filing date -
Aug 25, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A perforated non-woven fabric having at least one fiber layer that has a plurality of through holes. The total area of the through holes accounts for 10˜80% of the total area of the perforated non-woven fabric; the opening of the through holes is flat with the surface of the perforated non-woven fabric; and the density of through holes on the perforated non-woven fabric is 3/cm2˜100/cm2. The fiber density at the edge of each through hole is similar to or the same as the fiber density in other areas of the perforated non-woven fabric. The fiber surrounds the through hole, and only the surface of the fiber is bonded to each other.
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