Current Pedorthics | November-December 2018 | Vol.50, Issue 6 | Page 19

"Since its introduction in 1978, Goretex® membrane technology has set the ‘gold standard’ in breathable waterproof fabrics." up to 50% of their own weight in water between the fibers. This is called ‘wet-out.’ In addition, DWR typically wears off after a few washings. GoreTex® and similar laminated fabrics Since its introduction in 1978, Goretex® membrane technology has set the ‘gold standard’ in breathable waterproof fabrics. Goretex, along with other laminated membrane technologies, is achieved by laminating a film to high-performance textiles, then sealing them with a solution for guaranteed waterproof protection. Each microporous structure of the Goretex membrane is about 20,000 times smaller than a drop of water and 700 times bigger than a water vapor* molecule. This allows perspiration from the body to easily evaporate through the membrane yet repel water from its surface. Goretex also advertises their technology as windproof. Encapsulated fabrics Discovered by accident after a hot air balloon gave its passengers a scary crash landing, the inventor of this technology, a passenger on the fated trip, knew little about dirigibles and polymer sciences. Dirigibles are made of strong, tightly woven and coated synthetic fabric. The problem with that type of material is when a substantial temperature difference occurs on both sides of the fabric; Current Pedorthics | November/December 2018 17