Adhesive strip for continuous adhesion on a calender

Abstract

The invention relates to the use of a self-adhesive material having a shear resistance of at least 1000 minutes on coating base paper and at least 2000 minutes on gravure paper, respectively measured at 23° C., at a relative atmospheric humidity of 55%, and with a load of 1 kg for an adhesive strip for the flying roll change of a flat strip material wound up on rolls.

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         11 . An adhesive tape for the flying splice of flat web material wound into rolls, said adhesive tape comprising a self-adhesive composition exhibiting a shear strength of a least 1000 minutes on coating base paper, measured at 23° C. and 55% relative humidity under a load of 1 kg and at least 2000 minutes on gravure paper, measured at 23° C. and 55% relative humidity under a load of 1 kg.  
     
     
         12 . An adhesive tape for the flying splice of flat web material wound into rolls, the adhesive tape comprising a main backing, a self-adhesive composition on a front side and at least one cleavable adhesive system on a reverse face thereof, wherein the self-adhesive composition has a shear strength of at least 1000 minutes on coating base paper, measured at 23° C. and 55% relative humidity under a load of 1 kg and at least 2000 minutes on gravure paper, measured at 23° C. and 55% relative humidity under a load of 1 kg.  
     
     
         13 . The adhesive tape according to  claim 12 , wherein the self-adhesive composition is applied to the main backing at an application rate of from 30 to 60 g/m 2 .  
     
     
         14 . The adhesive tape according to  claim 13 , wherein the application rate of the self-adhesive composition is from 35 to 50 g/m 2 .  
     
     
         15 . The adhesive tape of  claim 12 , wherein the self-adhesive composition comprises an acrylate-based composition.  
     
     
         16 . The adhesive tape as in  claim 12 , wherein the cleavable adhesive system or cleavable adhesive systems are based on sized, highly compacted paper, or based on a paper/film composite or based on a two-film composite.  
     
     
         17 . The adhesive tape as in  claim 12 , wherein the cleavable adhesive system or cleavable adhesive systems comprises the same width as the main backing.  
     
     
         18 . The adhesive tape as in  claim 12 , wherein the main backing is a high-tensile strength paper or film backing.  
     
     
         19 . The adhesive tape of  claim 12 , wherein the self-adhesive composition comprises a liner comprising a lengthwise silt or lengthwise perforation.  
     
     
         20 . The adhesive tape of  claim 20 , wherein a cleavage resistance of the cleavable system is from 5 to 70 cN/cm.  
     
     
         21 . The adhesive tape of  claim 12 , wherein a cleavage resistance of the cleavable system is from 12 to 60 cN/cm.  
     
     
         22 . A method for splicing flat web material wound up on rolls, said method comprising: 
 a) securing a topmost web of said flat web material to an underlying web, wherein a top side of the adhesive tape according to  claim 12  is adhered partly behind said topmost web of said flat web material, while an underside of said adhesive tape adheres to an underlying web of flat web material;    b) removing part of the liner present on the self-adhesive composition, whereby a part of the self-adhesive composition required for splicing is no longer lined with the liner and whereby a part of the self-adhesive composition required for splicing is still lined with the liner and whereby a roll of said flat web material in this state does not have a free adhesive surface;    c) removing any remaining liner from the from the adhesive tape in preparation for splicing;    d) placing a new roll beside an old roll which is unwinding and is to be replaced;    e) accelerating the new roll to substantially the same rotational speed as the old roll;    f) pressing the new roll against the old roll, wherein the exposed self-adhesive composition of the adhesive tape adheres to the uppermost paper web of the old roll;    g) adhering the exposed self-adhesive composition of the adhesive tape to the uppermost web of the old roll at substantially the same speed while at the same time cleaving said cleavable backing made of cleavable material, resulting in a separation of two self-adhesive compositions with its residues non-adhesively covering the two self adhesive compositions;    h) passing a bond site, together with the bonded webs, after the splicing, through at least one calendar.