•First, place a towel or some other thin cloth (about the thickness of a pillow case) between the iron and the document - allow it to get as hot as possible with out burning the towel/cloth and do not allow the documents plastic laminate to start curling. If it starts to curl you could damage the document.

Once it gets hot enough you should be able to peel off the plastic, with out damage to the document. You may need to repeat the process several times.

If that doesnt work for you, or your lamination was done by simply melting two pieces of plastic together, in which case there is the "air line" you can simply cut the document along that lines and peel.

Hope you will able to manage it