Patent ID: 6505459
Filing Date: 2003-01-14
Classification: B65B

Abstract:
A method of wrapping a paper or board roll in a wrapper comprising the steps of:conveying a roll to be wrapped having a longitudinal axis to a wrapping station and placing the roll on a support means; rotating the roll to be wrapped on the support means; wrapping a plurality of wrapper sheets about the roll to be wrapped and perpendicular to said axis of the roll to be wrapped so as to form superimposed plies of at least two parallel and at least partially overlapped courses of wrapper, the wrapper sheets for each course of the wrapper being dispensed as a web from the same wrapper roll which is moved in a direction parallel to the axis of the roll to be wrapped, a portion of a surface of each wrapper sheet being coated with a hot-melting and heat-sealable material; and heating the hot-melting and heat-sealable material prior to wrapping of the wrapper sheets about the roll to bind the superimposed plies of the wrapper to each other and to seal joints of the overlapped courses of wrapper, wherein the hot-melting material on the surface of the wrapper is heated so that at least a first ply of the wrapper at a portion extending over an end of the roll to be wrapped is not heated and so that at least superimposed portions of wrapper plies at wrapper edges and the overlapping portions of the adjacent wrapper plies are hot-melt bonded to each other.