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A comment on The EPA is proposing that 'forever chemicals' be considered hazardous substances. Parent comment

Re:The EPA is proposing that 'forever chemicals' be consider... by themerone on Friday February 02, 2024 @08:36PM (#39236806)
PFAS are in the DWR coating on the outside of Gore-Tex fabric. The PTFE membrane is on the inside. The DWR finish definitely ends up going down the drain or wears off in use.

There are new PFAS free DWR finishes, but don't know if Gore-Tex is using them yet.

Gore does not consider PTFE to be environmentally friendly and is working on flourocarbon free fabrics.

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Re:The EPA is proposing that 'forever chemicals' be consider... by timr on Sunday February 04, 2024 @02:28PM (#39253510)
No, they aren't. PFAS are/were used [1] in the creation of Teflon, which is what defines GoreTex.

You're being confused by people who try to argue that Teflon is as PFAS.

[1] there are other ways of making Teflon, and the industry has been phasing out PFOA for a long time.

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Re:The EPA is proposing that 'forever chemicals' be consider... by themerone on Sunday February 04, 2024 @11:34PM (#39257374)
No, you don't understand how Gore-Tex is made.

Gore-Tex is a PTFE membrane laminated one side of a fabric.

The other side of the fabric is coated with a DWR (durable water repellent) coating.

The DWR finish prevents the outer fabric from being saturated with water.

The DWR is not made from PTFE and historical has contained PFAS compounds.

It is not a permanent finish, so it definitely ends up in the environment.

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