Polyolefin wood fiber composite
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United States of America Patent
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Jan 27, 2004
Grant Date -
Dec 13, 2001
app pub date -
Jun 27, 2001
filing date -
Apr 16, 1999
priority date (Note) -
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Abstract
A member comprising a complex profile made of a composite comprising a polypropylene polymer, and a wood fiber. The composite is useful in construction applications. The profile can be used in residential and commercial structures. The member is used in fenestration components such as windows and doors. The members possess strength, thermal stability and weatherability. The member comprises a complex cross-section with at least one structural web or one fastener web. The exterior can contain a cap-stock and is shaped for use in a fenestration unit such as a window, sash or movable door unit. The members can be assembled in thermal welding processes.
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