Stock material or miscellaneous articles – Sheet including cover or casing – Foamed or expanded material encased
Patent
1997-03-19
2000-07-04
Kuhns, Allan R.
Stock material or miscellaneous articles
Sheet including cover or casing
Foamed or expanded material encased
160236, 4283044, E06B 926
Patent
active
060836016
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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King Gordon L.
Prince Kendall W.
Kuhns Allan R.
Royal Wood Inc.
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