| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite sash material capable of providing stability even when it is used as a framework in assembling structure high in independency such as a wind screen chamber to say noting of excellency in heat insulation and low cost. SOLUTION: A composite sash material is constituted of combination of a member main body and an indoor body by forming the member main body to be a main body in strength of an aluminum extruded shape in a shape on which a part to be exposed to the indoor side is eliminated, forming an indoor body to supplement the eliminated shape of a resin extruded shape and providing a machine screw pocket by its molding. Consequently, it is suitable for sweat prevention of a sash as it is excellent in heat insulation, it is possible to provide it at low cost, it is capable of to efficiently use it for a framework high in independency against a building as a wind screen chamber as it is stable in strength and no distorsion is caused, and it is possible to express an indoor surface in a pattern of grain, etc., and in free color and to improve a decorative property.
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