07337544 is referenced by 13 patents and cites 140 patents.

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.

Title
Method of forming a composite door structure
Application Number
11/653285
Publication Number
7337544 (B2)
Application Date
January 16, 2007
Publication Date
March 4, 2008
Inventor
Richard H Kon
Cornelius
NC, US
Gary Fagan
Charlotte
NC, US
Agent
Berenato White & Stavish
Assignee
Masonite International Corporation
CA
IPC
B23P 17/00
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