*Important Note: Pliability/Flexibility/Rigidity of the label is also a factor. If the label is too flexible, no matter the thickness, it can cause wrinkling or it may not pop off the liner when going around the peel edge. Polypropylene, Polyester and Vinyl labels tend to be more flexible than paper labels. If you suspect the label stock is too flexible, it is recommended that the stock and container be tested on the Applicator before making any purchase decisions of label stock or the applicator.