Method of manufacturing noise attenuating flexible cutting line for use in rotary vegetation trimmers
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United States of America Patent
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Apr 5, 2011
Grant Date -
Sep 9, 2010
app pub date -
May 14, 2010
filing date -
Aug 29, 2001
priority date (Note) -
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Abstract
A process for forming flexible noise attenuating cutting line for use in rotary vegetation trimmers formed of at least two monofilament polymer strands bonded together in a twisted disposition or a single strand twisted about its central axis in which the strand or strands are extruded in a molten disposition through a single die that is rotated during the extruding step either to twist the two strands together about a central longitudinal axis or a single strand about its own longitudinal axis such that upon cooling, stretching and heating, a flexible noise attenuating line is created in a continuous online process.
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