Getting out creases in thermal lned curtains

I hate the things. I have anahilated several pairs of curtains with this stupid rubber backing on them when I have tried to clean them previously.
I have been given several pairs of quite new curtains which I am putting up in the cottage B&B, but them have been stored for a while and are a little wrinkled.
I dare not risk washing them. I have a theory that the wallpaper stripper that I have might help the wrinkles to drop out it I steam them. It has various attachments.
Anyone done this?

No. But I have bought new thermal backed curtains before which have folds in them when removed from the packet. I just hung them up and the creases disappear in due course.

I wash mine in the w/machine & hang up wet ... no creases

Don't iron and don't wash them, just put them up and the creases will go away soon enough.

Yep, just hang them up. Looks ugly for a day or two or three but after that you won't notice