Naturally dyed mulch and growing media
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United States of America Patent
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Jan 12, 2021
Grant Date -
May 18, 2017
app pub date -
Jun 29, 2015
filing date -
Jun 29, 2014
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Abstract
A method for making a dyed mulch composition or a dyed growing medium, the method comprising combining tree bark including one or more pigments and/or pigment precursors and wood components together to form an initial composition; heating the initial composition at a temperature greater than about 149° C. under steam in a pressurized vessel; processing the initial composition through a refiner with a plurality of opposing disks, the refiner separating the tree bark and wood components into fibers and separating the fibers from each other; and dyeing the wood components by the one or more pigments and/or pigment precursors while the tree bark and the wood components are being separated into fibers in the refiner to obtain dyed fibers.
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