PLANT STEM BREAKING APPARATUS AND METHOD
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United States of America Patent
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Issued Date -
Aug 29, 2024
app pub date -
Jan 29, 2024
filing date -
Jan 27, 2023
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Abstract
A stem breaking apparatus includes a roller having unevenly spaced radial projections and is useful in a method of extracting bast fibers from a plant stem. The roller is one of a pair of intermeshed counter-rotating rollers between which the plant stem is passed to break the woody core of the stem for separation from the bast fibers. Pairs of adjacent projections are angularly spaced by a larger amount that the individual projections of each pair. The rollers provide a larger support span than conventional stem-breaking rollers, resulting in gentler breaking of the woody core and preventing or eliminating the kinks and inter-fiber splitting associated with conventional stem breaking. Pre-compression of the stems before breaking offers further advantages.
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