Polyester is a man-made fiber prone to melting when it comes in direct contact with heat. If your polyester garment has been ironed, a portion of it may well be stuck to the iron plate. Not only is the garment ruined, but a sticky mess remains on the iron. Unless the melted fabric is removed from the iron, it will transfer to other ironed fabrics and spread the mess further. Careful cleaning methods remove the polyester and restore your iron to its previously usable state.
Plug in the iron, and turn it to the lowest heat setting. Allow the iron to heat until the hardened melted polyester softens again.
Scrape the melted fabric off the iron plate with a wooden spatula. Pick off small bits of remaining polyester with a pair of tweezers. Discard the melted polyester as it's removed.
Unplug the iron and, while it begins to cool, mix equal parts of baking soda and water to make a mild abrasive cleanser. Dab some of the baking-soda cleanser onto a clean cloth, and scrub the iron plate to remove any remaining melted polyester residue.
Treat any last traces of the stain by wiping them with a clean cloth dampened with acetone-based nail-polish remover. Change to another part of the cloth as the stain is lifted, and continue to remove the stain.