Methods and products are disclosed in the manufacture of liner-carried "dry" tags or labels, and the manufacture of liner-carried presure-sensitive coated middle liners on which dry tags or labels are "piggybacked," and the manufacture of liner-carried coupons printable on one side. These methods and...http://www.google.com/patents/US4863772?utm_source=gb-gplus-sharePatent US4863772 - Label stock with dry separation interface
