Ready made curtains: creases due to packaging

Every time I buy ready-made curtains they come out of the pack with
deep creases on them, where the curtain has been folded. I invariably
have to spend a lot of time ironing them to get the unsightly
Last night it took me 2hrs to iron a pair of 66inch x 72 inch drop
polycotton curtains, using an iron and a damp cloth.

Any ways round this horrible job -- I am buying some 90 inch x 72 inch
curtains soon for the lounge!

Bruce