Chemfab Corporation

Chemical Fabrics Corporation

Francis M Enzien

John A Effenberger

Keith G Koerber

Frank M Keese

Michael P Cushman

Milton B Punnett

A flexible, reinforced textile composite material for constructing tensioned fabric structures, e.g. for sheltering from the outdoor environment, is disclosed. The material has a hydrophobic protective film element laminated to the textile composite material to provide enhanced hydrophobicity. In a preferred embodiment, of the invention, one or a mixture of colorants, dyestuffs or biological agents are incorporated into the hydrophobic protective film layer. The textile composite material has particular application as a tensioned architectural element for forming a dome, roof or the like, or as an electromagnetic window or a radome.

Composite materials for structural end uses

Dispersion polymerized PTFE itself, if provided in an unfused state, is sufficiently capable of acting as a pressure sensitive adhesive to facilitate the formation of an initial mechanical bond between components of a laminate such that it may be subsequently heat treated in a relatively short period of time to produce a well-bonded final laminate. This fact makes it possible to prepare a laminate comprising at least one layer containing PTFE by the steps of:

Method of making laminated PTFE-containing composites and products

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Penacook, NH, United States of America

Francis M Enzien