Ironing works by loosening the bonds between the long-chain polymer molecules in the fibers of the material. While the molecules are hot, the fibers are straightened by the weight of the iron, and they hold their new shape as they cool.
Yeah this is exactly right. Obviously the more steam an iron produces, the more it is going to loosen the bonds and the easier the job will be! Theres a lot more information on this website Edit [Moderator]: Link removed