Well, sort of. It is essesntially a plastic felt. It's not a solid sheet of plastic (like plastic bag), but it is from plastic. If it's a laminated jacket, this felt is then laminated (duh) to the inside of the outer fabric. If it's a drop liner, its separate and usually reenforced since it is quite delicate.
Depends what you mean by "plastic" - it is made of polymers, yes. The whole jacket is! A waterproof membrane is supposed to be semi-permeable and will allow water vapour to escape to allow for some kind of breathability - it's not quite as bad as wrapping yourself in a bin bag.
Decent 👏🏻
Is a waterproof membrane laminate essentially plastic?
No
Well, sort of. It is essesntially a plastic felt. It's not a solid sheet of plastic (like plastic bag), but it is from plastic. If it's a laminated jacket, this felt is then laminated (duh) to the inside of the outer fabric. If it's a drop liner, its separate and usually reenforced since it is quite delicate.
Depends what you mean by "plastic" - it is made of polymers, yes. The whole jacket is! A waterproof membrane is supposed to be semi-permeable and will allow water vapour to escape to allow for some kind of breathability - it's not quite as bad as wrapping yourself in a bin bag.