Material with variable height barbs
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United States of America Patent
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Jan 2, 2018
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N/A
app pub date -
Sep 24, 2015
filing date -
Sep 26, 2014
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Abstract
A workpiece includes a material with a face and a first plurality of barbs and a second plurality of barbs extending integrally from the face. Each barb has a height above the face. The barbs of the first plurality are at least 10% higher than the barbs of the second plurality. The first plurality of barbs includes at least 10% of the barbs on the face and the second plurality of the barbs includes at least 10% of the barbs on the face. The barbs of the second plurality of barbs are bent and pointed.
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