Double faced tab fastener characterized by a strip of release agent designed to extend partly beyond the width of a strip of adhesive

Claim 1

A web construction of linerless diaper tab stock made up of initially flat but flexible layers suitable to be formed in long passes along the machine direction of a coating and laminating line and to be self-rolled for storage and shipment, and unrolled for use by diaper manufacturers, and fabricatable completely by web coating and slitting operations and without the necessity for folding or web-to-web fastening operations, and suitable for high speed dispensing on automatic equipment, including a substrate extending, transversely to machine direction, along first and second endward length portions and an intermediate third length portion between the other two, the substrate bearing first adhesive on its top side along the first length portion, the substrate bearing second adhesive on its bottom side along the second length portion, the substrate being free of adhesive on each side along the intermediate third length portion, said first length portion bearing release means on its bottom side for releasably supporting adhesive, corresponding to said first adhesive, that is associated with an adjacent wrap when the web construction is self-wound, said last-named release means extending partially across said intermediate third length portion toward the adhesive on said second length portion but stopping short thereof to define a gap on the bottom of said third length portion which gap bears no release means, said second length portion bearing release means on its top side for releasably supporting said first adhesive when tabs have been formed from said stock and said first length portion is folded back over said second length portion.