gore-tex technology

Answer
Gore-Tex is a versatile, waterproof, breathable fabric membrane and registered trademark of W. L. Gore & Associates3. Invented in 1969, Gore-Tex is designed to repel liquid water while allowing water vapor to pass through, making it suitable for all-weather use3. The material is composed of stretched polytetrafluoroethylene (PTFE), more commonly known as Teflon, and is formally known as expanded PTFE (ePTFE) 3. Gore-Tex garments come with the "GUARANTEED TO KEEP YOU DRY" promise, are totally windproof, and very breathable1. They are available in a wide range of styles for various activities, including hiking, exploring downtown, and more1. Some Gore-Tex garments also include Gore-Tex stretch technology for added flexibility during activities like hiking or golfing1. Gore-Tex is used in various applications, such as high-performance fabrics, medical implants, filter media, insulation for wires and cables, gaskets, and sealants3. However, it is best known for its use in protective, breathable rainwear3. Gore-Tex has also been used in the conservation of illuminated manuscripts, explosive sensors, space suits, and medical applications like sutures and vascular grafts35. Gore-Tex is committed to reducing the environmental footprint of its products, with a goal to eliminate PFCs of Environmental Concern (PFCEC) by 20231. As a step in this journey, Gore-Tex products come with a durable water repellent treatment free of PFCEC (PFCEC Free DWR) 1. In summary, Gore-Tex is a waterproof, breathable fabric membrane known for its use in protective rainwear and various other applications. It offers comfort, protection against the elements, and styles suitable for a wide range of activities.
how does Gore-Tex technology work
Answer
Gore-Tex technology works by utilizing a microporous membrane made of expanded polytetrafluoroethylene (ePTFE) that allows water vapor to pass through while preventing liquid water from entering13. The key features of Gore-Tex technology are:
  1. Waterproof: The Gore-Tex membrane contains microscopic pores that are approximately 20,000 times smaller than a water droplet, preventing liquid water from passing through6. This makes the fabric completely waterproof, keeping the wearer dry in wet conditions.
  2. Breathable: The pores in the Gore-Tex membrane are also 700 times larger than a water vapor molecule, allowing perspiration to escape1. This breathability ensures that water vapor generated by the wearer's body during physical exertion is rapidly diverted away, maintaining a comfortable body climate3.
  3. Windproof: The continuous membrane structure of Gore-Tex fabric provides a barrier against wind, ensuring the wearer stays warm and protected in windy conditions2.
  4. Durable Water Repellent (DWR) treatment: Gore-Tex garments are treated with a durable water repellent coating that is free of PFCs of Environmental Concern (PFCEC Free DWR)2. This treatment causes light precipitation to bead and run off the surface of the garment, keeping it lightweight and maintaining its breathability4.
In summary, Gore-Tex technology works by using a microporous ePTFE membrane that is waterproof, breathable, and windproof. This membrane is combined with a durable water repellent treatment to provide protection and comfort in various weather conditions.
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