Liquid pectin can be purchased at the grocery store. Sometimes its near the jams and jellies or where they have canning supplies(jars, etc). It always seems to be on the very top shelf. It comes in packets which can be sealed in a jar or something and stored in the fridge for several months. It is similar to the glue that rollers use. Just apply a very small amount on the damaged wrapper with your finger and let it dry for a few hours.
