SYNTHETIC RESIN-MADE WINDOW FRAME, MANUFACTURE OF FRAME MATERIAL USED THEREFOR AND WINDOW FOR BUILDING OPENING PART

摘要

PROBLEM TO BE SOLVED: To maintain high heat insulation and high sound insulation and contrive slimness while securing practically sufficient strength by using a frame material covering the surface of a core material formed of bamboo laminated wood with a synthetic resin layer, and assembling these frame materials into a rectangle to constitute a synthetic resin-made window frame.;SOLUTION: A frame material 4 covering the surface of a core material 2 with a synthetic resin layer 3 is used, the synthetic resin layer parts of both ends of these frame materials are welded, and assembled into a rectangle to make a synthetic resin- made window frame 1. After vertically divided bamboo materials are dried, a proper amount of an adhesive is used to be laminated and collected, synthetic resin is heated and melted by an extruder, and the hollow molding of a desired cross section shape is made from the neighborhood of the outlet of a die while it is gradually diameter- reduced. The core material 2 having a cross section smaller than only by the thickness of synthetic resin covered on the surface symmetrical with the cross section shape of the frame material desired in parallel with the melting molding of the synthetic resin is inserted in the die, and fitted to the hollow part of a melt and molded synthetic resin hollow molding in the neighborhood of the outlet of the die.;COPYRIGHT: (C)2000,JPO