Insulating multiple layer sealed units and insulating

Abstract

There is described a multiple layer sealed glazing unit comprising two or more glazing layers arranged in a parallel spaced apart relation, with an insulating spacer made of oriented thermoplastic polymer material interposed between the separate glazing layers and adjacent to the periphery thereof. The required physical properties of the insulating spacer are substantially governed by controlling the degree and directions or orientation of the molecular structure of the thermoplastic material or materials from which it is formed. Typically, the orientation of the polymer material used to manufacture the insulating spacer is largely in the longitudinal axis of the spacer. There is also described an insulating spacer for multiple layer sealed units. The spacer is formed from oriented thermoplastic polymeric material and among other physical properties of which, the thermal conductivity, coefficient of thermal expansion and dead bend properties are governed by controlling the degree and directions of orientation of the molecular structure of the material.