Patent ID: 8585857

Claim:
A method for butt joining ends of a flexible laminated band (W) destined for product packaging having at least the side destined to be disposed inside the package which is heat-sealing, said band (W) being unwound from a parent reel ( 10 ), longitudinally cut into strips (W 1 , W 2 ) and re-wound in rolls or reels ( 20 ), the method comprising the steps of: overlaying a tail edge (L 1 ) of a band (W) from a finished parent reel on the top of leading edge (L 2 ) of a band (W) from a new parent reel, performing a transverse cut across the bands along a cutting line (R) in the area where the two edges (L 1 ) and (L 2 ) are overlaid, eliminating the ends (E 1 , E 2 ) that have been trimmed from the edges (L 1 , L 2 ) in such a manner that the cut edges are butt-joined to one another, applying along said cutting line (R) and said heat-sealing side of the band (W) a strip (S) having two surfaces of heat-sealing material, the surface of the strip facing the heat sealing side of band (W) being an inner surface, and the surface of the strip remaining exposed being an exterior surface, said strip comprising a layer of barrier material, and heat sealing the heat-sealing strip (S) to the heat-sealing side of the band (W).