Method and apparatus for separating and recovering fractional components of carpet
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United States of America Patent
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-
Jun 1, 1999
Grant Date -
N/A
app pub date -
Jun 24, 1998
filing date -
Jul 10, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is disclosed for the separation and recovery of fractional components of used carpet. Although the disclosed process is operable with either jute-backed or vinyl-backed carpet, an alternative process is preferred for vinyl-backed carpet to permit the sequential removal of the vinyl backing with most of the fiberglass stabilizer intact. The process includes the pre-cutting and preferable pre-soaking of the used carpet into appropriate sized pieces, followed by the introduction of the pre-conditioned used carpet pieces into a cyclonic comminuter which reduces the carpet pieces into fractional components. Processes for the recovery of the separated fractional components include collecting the components from the respective discharges from the cyclonic comminuter, washing, and separating by carding, static charges, pressure gradients and the like. This effective process will allow for greater utilization of carpet recycling operations to prevent used carpet from being disposed in land fills.
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