C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 7/02 (2006.01) B65H 19/18 (2006.01)
Patent
CA 2663450
The invention relates to an adhesive bonding system (K) for joining flat webs when changing rolls of such webs, comprising two adhesive tape boundary edges (Ka, Kb), and further comprising a top carrier layer (2) and a bottom carrier layer (2'), a flat connecting element (1) that connects the two carrier layers (2, 2') to one another and is suitable for opening the connection under the conditions of a static or flying roll change, two layers of adhesive (3, 3'), each provided on the surface of each carrier layer (2, 2') that faces away from the connecting element (1), where the connecting element (1) is not a layer of adhesive, and the connection between the connecting element (1) and at least one of the carrier layers (2, 2') is not brought about by means of further layers of adhesive, characterized in that at least one (1a) of the boundary edges (1a, 1b) of the connecting element (1) does not extend in a straight line, and a straight-line emphasis line (main direction line) is defined in relation to this boundary edge (1a), the emphasis line of this boundary edge (1a) extending along a preferential direction, and this boundary edge (1a) having a multiplicity of regions lying on one side of its emphasis line and also a multiplicity of regions lying on the other side of its emphasis line.
Goetz Kerstin
Nagel Christoph
Gowling Lafleur Henderson Llp
Tesa Se
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