0586213-A1 is referenced by 40 patents and cites 10 patents.

A composite structural member, made of a polymer and wood fibre composite material, in the form of an extruded or injection moulded thermoplastic member in residential and commercial structures. The structural member can be used in a window or a door. The structural member has a hollow cross-section with at least one structural web (109) and at least one fastener web (110) formed within the member. The exterior of the extruded member is shaped and adapted for installation in a rough opening and to support window and door components. Such structural members can be assembled in a thermoplastic weld process. Welding is performed by heating and fusing the heated surfaces together to form a welded joint.

Title
Polymer and wood fibre composite structural member.
Application Number
EP19930306845 19930827
Publication Number
0586213 (A1)
Application Date
August 27, 1993
Publication Date
March 9, 1994
Inventor
Heikkila Kurt E
US
Deaner Michael J
US
Puppin Giuseppe
US
Assignee
Andersen
US
IPC
B29K 105/12
B29K 27/06
E04C 03/28
B27N 03/28
B29B 07/92
E06B 03/04
B27N 03/08
E06B 03/22
E06B 03/10
B27N 03/28
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