Sheet material, a block like sheet material, a method for producing a sheet material, a method for separating and retrieving a fiber fabrication layer unit and a backing layer from a tile carpet
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United States of America Patent
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Apr 14, 2009
Grant Date -
Jul 6, 2006
app pub date -
Apr 28, 2004
filing date -
Mar 5, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An effective recycling method for a fiber fabrication layer unit which has been separated and retrieved from a tile carpet and which comprises a fiber assembled layer to which a part of a backing layer being integrally contacted and a method for producing a product to be recycled. The method for effectively recycling the fiber fabrication layer unit includes the steps of: applying a pressured shearing force to a surface of a backing layer of a tile carpet collected from the market before it is broken, so that at least a part of the backing layer is separated from a fiber assembled layer or from a rest of portion of the backing layer; separating the backing layer and the fiber fabrication layer unit including the fiber assembled layer from the tile carpet from each other; after that, gathering and connecting the tile carpets or the fiber fabrication layer units to each other utilizing heat energy or suitable adhesive, to form a tile shaped block like sheet material or a longitudinal sheet material; and forming various kinds of industrial materials from these sheets.
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