Iron with a towel: Place the tablecloth on a flat surface and cover it with a towel. Set the iron to a low heat setting and iron over the creases, pressing firmly. Be careful not to overheat the iron, as this could melt the plastic.
Hang on a clothesline: If the creases are not too severe, you can hang the tablecloth on a clothesline on a sunny day. The heat from the sun will help to relax the vinyl and remove the creases.
Use a steamer: A steamer is a great way to remove wrinkles from all types of fabrics, including vinyl. Simply place the tablecloth on a flat surface and steam over the creases until they are gone.
Put in the dryer: If you are in a hurry, you can put the tablecloth in the dryer on a low heat setting with a damp towel. The heat and moisture will help to relax the vinyl and remove the creases.