A PE Liner is not found on all vinyl media. It can be a number of weights, but commonly is around 150gsm. It is a one side silicon coated paper with a synthetic core.

Typically, PE liners display excellent dimensional stability and flatness during processing as well as flexibility during the diecutting process.

Some wide format printers prefer materials with a PE liner, and some don't.

Material with a PE liner are usually dearer to comparable products that don't have a PE backing.

Print and Cut machines usually produce a better result on PE baked vinyls due to their dimensional stability, and are less likely to warp if too much ink is laid down in the printing process.

They also store better in damp weather.