Foam wood extrusion product
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 4, 2000
Grant Date -
N/A
app pub date -
Mar 19, 1997
filing date -
Mar 19, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An extruded product having a foam core is formed by blending powdered cellulose with a base resin and an oxidizer to yield a first mixture. The first mixture is compressed, heated and extruded to form a pelletized compound which is compressed and heated into a homogeneous extrudable mixture. Moisture is extracted from the powdered cellulose at one or more points during the process to achieve a moisture content of less than about two percent. A protective cladding is coaxially extruded around a core of the extrudable mixture to form an elongated product having a foam core at least partially enclosed by the protective cladding.
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Cited Art Landscape
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