WOODY WINDOW

摘要

PROBLEM TO BE SOLVED: To provide a window having a high wind pressure resistance even without reducing a thickness of a frame material or without inserting a reinforcing material made of a metal in a frame material with heat insulation characteristics and advantageous economy. SOLUTION: The frame material is made of a special-form extrusion by using a compound containing a thermoplastic synthetic resin compound of 4 to 90 pts.wt. and a woody material of 90 to 10 pts.wt. A woody window frame is assembled by using the frame materials.