Patent Publication Number: US-2007102552-A1

Title: Log or single small roll of paper with improved clamping of the final or end strip

Description:
The present invention refers to a body of a log or single small roll ( 11 ).  
      In the field of the realisation of paper rolls for domestic use, of toilet paper and the like, normally denominated “log”, different types of more or less complex devices are foreseen for pasting the final or end strip of a log once its winding has been completed. Such pasting at the same time also generates the bond of the strip of the single small rolls of predetermined measurement, which are generated by the cutting of the log before packaging.  
      Until today, it is known that once the winding of the paper has been carried out on an inner core or in any case to form a log, it is necessary to proceed by setting glue in order to have a stable bond of the end strip of the single log paper, before proceeding to the final cutting into small rolls of the desired measurement.  
      The glue is arranged in various modes and with various devices which, have however until now only taken care of realising a stable bond between the relevant parts: log and final strip or rather small roll and final strip. The glue, while being fed or drawn in various modes, has always characterised a portion or nearly a wide line arranged along the generatrix of the log or rather final small roll.  
      The quantity of glue foreseen for the realisation of the bond, if on the one hand ensures a stable positioning, on the other may determine externally visible staining and in any case involves the consumption of considerable quantities of glue.  
      One must also understand, in fact, that due to their nature known devices either accidentally distribute the glue also in undesired zones, with staining or in any case consumption above beyond what is due of the same, or, on the contrary, they are not able to distribute it where it is truly necessary for a stable positioning between the parts.  
      Hence a main object of the present invention is that of identifying a solution for the above mentioned technical problems, both for a quick and correct dispensing or placing of the glue and to avoid every possible staining.  
      Another object is to realise a log or small roll which externally has a correct and aesthetically pleasing positioning of the strip, in which the bond of the glue does not cause wrinkling or any case a not very pleasing appearance for the person who uses the log or small roll.  
      These objects according to the present invention are achieved by realising a log or single small roll with improved clamping of the end strip as set forth in the independent claims.  
      Further specific and detailed characteristics of the present invention are the object of the dependent claims. 
    
    
      The characteristics and advantages of a log or single small roll of paper with improved clamping of the end strip according to the present invention shall be clearer and more evident from the following exemplifying and not limiting description of an embodiment with reference to the attached figures in which:  
       FIG. 1  is an external perspective view of a small roll according to a first embodiment of the present invention;  
       FIGS. 2-4  are views similar to that of  FIG. 1  which exemplify several among other possible small roll embodiments of the present invention. 
    
    
      With particular reference to the figures, a small roll or in any case a portion of a log  11  is shown generated directly upon leaving a log formation machine or after the cutting of the mentioned logs into rolls of preselected size.  
      In the figures, an inner core  12  is shown on which paper is wound, for example in a rereeling machine (not shown), for domestic use, toilet paper and similar products.  
      As is known, both in the case of a log or a small roll  11 , this winding generates a final or end strip  13  which must be stably bound to the underlying paper portion, which characterises the body of the log or small roll  11 .  
      Consequently, immediately downstream of the log  11  in formation or in any case of the group capable of possibly and directly generating a small roll  11 , a glue release or applicator element (not shown) must be situated for realising the bond between the final strip  13  and the underlying paper portion of the log or small roll  11 .  
      Thanks to the prevision of suitable glue release or application devices in the glue release or applicator element (not shown), a log or small roll  11  is realised in which elements or zones of localised bonding are foreseen, indicated overall with  14 , which characterise a log or single small roll of paper  11  with improved clamping of the end strip according to the invention.  
      In fact, with particular reference for example to  FIG. 1 , it may be pointed out how, through the use of a suitable glue applicator or release element (not shown), a log or single small roll of paper  11  is obtained in which the end strip  13  is connected to the body in a predetermined zone, in particular through a series of three wave-shaped sections of glue  15 .  
       FIG. 2  shows how it is possible to realise a bond even through only one glue section  15 , entirely similar to that shown in  FIG. 1 .  
       FIGS. 3 and 4  show further examples in which the end strip  13  is bound to the body of the small roll or log  11  through a concentric circle drawing  115 , for example with two drawings ( FIG. 3 ) or simple through a single concentric circle drawing  115 .  
      Likewise, even if not shown, the present invention proposes to realise a bond through any logo or through marks of various type and in various quantity.  
      These localised bonding elements or zones  14  may be generated through the deposition on the paper surface of a quantity and distribution of glue equal to that of the section, drawing, logo, mark or any other item which one desires to highlight through the mentioned placing.  
      Alternatively, the glue is situated or collected from a section, drawing, logo, mark or any other item which one desires to highlight characterised through a deformation, embossing, impression or similar treatment of a portion of the strip end of the paper which composes the log or small roll  11 .  
      It is equally evident that in this manner it is possible to realise a personalisation or personalised motifs on the paper of the small roll or log in correspondence with the zone in which the glue is placed in a dosed measurement and preselected position. Thus a correct and minimised placement of glue is carried out on a final paper strip of a log or small roll to be glued then on the side surface of the log or small roll itself in a quick and precise manner.  
      In this manner, the problems indicated in the introductive part have been resolved, which related to the gluers known and used up until now in the field of logs for realising small rolls or directly small rolls of toilet paper, paper for domestic use and the like.  
      The log or single small roll of paper with improved clamping of the final or end strip of the present invention thus conceived is susceptible to numerous modifications and variations, all coming under the same invention. Furthermore, in practice, any paper or glue material may be utilised, of any size, and components may be of any type according to technical needs.