Method of making thermoplastic tape

Claim 1

IN A METHOD OF PRODUCING A WEB HAVING THEREON A COATING OF A PREDETERMINED SELECTED THERMOPLASTIC ADHESIVE WHICH IS NORMALLY SOLID AT ATOM TEMPERATURE AND WHICH IS ADAPTED TO BECOME USEFULLY TACKY UPON FUSION BY HEATING ABOVE ROOM TEMPERATURE AND THEN TO REMAIN TACKY FOR A SUBSTANTIAL PERIOD AFTER COOLING TO ROOM TEMPERATURE, THE STEPS OF CONTINUOUSLY ADVANCING A WEB OF A MATERIAL TO WHICH SAID SELECTED ADHESIVE IS PERMANENTLY ADHERENT FOLLOWING SETTING FROM THE FUSED STATE WHILE IN CONTACT THEREWITH AND BOTH SURFACES OF WHICH ARE SUBSTANTIALLY IDENTICAL WITH RESPECT TO SAID ADHERENCE OF SAID ADHESIVE THERETO, CONTINUOUSLY FORMING ON ONE SIDE OF SAID ADVANCING WEB A FUSED TACKY FILM OF SAID ADHESIVE, CONTINUOUSLY APPLYING TO THE RESULTING COATING AND TACKY SIDE OF SAID WEB A SECOND WEB OF A SELECTED DIFFERENT MATERIAL TO WHICH SAID ADHESIVE IS SUBSTANTIALL NON-ADHERENT EVEN AFTER SETTING FROM THE FUSED STATE WHILE IN INTIMATE CONTACT THEREWITH, WINDING THE RESULTING COMPOSITE WEB IN A ROLL WITH SAID SECOND WEB IN CONTACT WITH THE BACK SIDE OF SAID COATED TO WHICH SAID TACKY COATED SIDE WOULD ADHEREIN SAID ROLL IN THE ABSENCE OF SAID SECOND WEB, CAUSING SAID FILM TO SET TO NON-TACKY CONSISTENCY WHILE SAID COMPOSITE WEB IS WOUND IN SAID ROLL, THEREAFTER UNWINDING SAID ROLL AND REMOVING SAID SECOND WEB THEREFROM, AND WINDING SAID COATED WEB IN A SECOND ROLL WITH SAID COATED SIDE THEREOF IN DIRECT CONTACT WITH SAID BACK SIDE THEREOF.