PTFE is a fluoropolymer made using an emulsion polymerization process that utilizes the fluorosurfactant PFOA,[16][17] a persistent environmental contaminant. The International Agency for Research on Cancer has classified PFOA as carcinogenic to humans.[18] Gore pledged in 2017 to eliminate PFCs such as PFOA by 2023, although the core technology will continue to be based on PTFE,[19] which is a PFAS compound.[20][21] Many Gore-Tex products have a durable water repellent coating and the version that do not contain PFCs of environmental concerns are marketed as "Gore PFCEC Free DWR". Unlike the "Gore DWR", it lacks any form of oil repellency.[22] From 2024 onwards, the company is replacing ePTFE membrane with an expanded polyethylene (ePE) membrane in consumer fabrics.[23] [24] The new material, while intended to perform comparably to the existing ePTFE material, will cost more, and require more frequent washing.
pmc.ncbi.nlm.nih.gov/articles/PMC3855507/ PFOA and Cancer in a Highly Exposed Community: New Findings from the C8 Science Panel
PTFE is a fluoropolymer made using an emulsion polymerization process that utilizes the fluorosurfactant PFOA,[16][17] a persistent environmental contaminant. The International Agency for Research on Cancer has classified PFOA as carcinogenic to humans.[18] Gore pledged in 2017 to eliminate PFCs such as PFOA by 2023, although the core technology will continue to be based on PTFE,[19] which is a PFAS compound.[20][21] Many Gore-Tex products have a durable water repellent coating and the version that do not contain PFCs of environmental concerns are marketed as "Gore PFCEC Free DWR". Unlike the "Gore DWR", it lacks any form of oil repellency.[22] From 2024 onwards, the company is replacing ePTFE membrane with an expanded polyethylene (ePE) membrane in consumer fabrics.[23] [24] The new material, while intended to perform comparably to the existing ePTFE material, will cost more, and require more frequent washing.
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