Metal working – Method of mechanical manufacture – Structural member making
Reexamination Certificate
2008-03-04
2008-03-04
Cozart, Jermie E. (Department: 3726)
Metal working
Method of mechanical manufacture
Structural member making
C029S458000, C029S463000, C029S469500, C029S527100, C029S527200, C052S784100, C052S309130
Reexamination Certificate
active
07337544
ABSTRACT:
A method of forming a composite door is disclosed. The method comprises: mixing together a thermoplastic polymer with an organic fibrous material in a ratio such that the organic fibrous material constitutes 40 to 60 percent by weight of the mixture; extruding the mixture under heat and pressure to create a thin sheet form; cutting the sheet to a predetermined size; removing material from at least one surface of the sheet to create a homogeneous appearance devoid of obvious fibrous particles; thermoforming the sheet to impart to the at least one surface an exterior three dimensional door surface to create a thin door facing; and assembling two of the thermoformed thin door facings, a peripheral frame and a core material into a door.
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Fagan Gary
Kon Richard H.
Berenato White & Stavish
Cozart Jermie E.
Masonite International Corporation
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