Abstract:
A booklet is provided which is easily formed in the in-line finishing process part of a web printing press operation having a plurality of sheets or layers, each sheet or layer having multiple removable portions positioned about a central portion used to attach the layers or sheets to one another. The removable portions of the booklet are particularly useful as coupons, advertising material or the like. The booklet may be attached to a newspaper, magazine, catalog or the like by extending the outer edge of one of the removable portions so such outer edge can be attached to the newspaper, magazine, or the like. The booklet may also be removable from the newspaper, magazine, catalog or the like by placing perforations between the attachable extension and the outer removable portion. Also provided is a method of making the inventive booklet.

Description:
FIELD OF THE INVENTION  
         [0001]    The present invention relates to advertising material in a booklet form and particularly to removable, indicia-bearing advertising materials which may be redeemed for value. The present invention also relates to a method of making such advertising material.  
         BACKGROUND OF THE INVENTION  
         [0002]    Advertising, especially through coupon use and redemption, is a particularly effective way for companies to promote new products and revive older brands. However, coupon redemption rates tend to be low across the general consumer population. Thus, to be effective, coupons and inserts need to be not only attractive and attention-getting to the ultimate consumer but must also be easy to access and use, otherwise the consumer will abandon the coupon use altogether. Moreover, the coupon must be relatively inexpensive to manufacture, and the overall coupon design must be compatible for easy printing on a high-speed web press.  
           [0003]    Consequently, a need exists for a coupon booklet with removable portions that is attractive to the end user, easy to use and inexpensive to manufacture. A need also exists for a method of making the same which is inexpensive, efficient, and compatible to use with existing web printing presses equipped with in-line finishing capabilities.  
         SUMMARY OF THE INVENTION  
         [0004]    The present invention provides an economically produced booklet for advertising which comprises a plurality of removable portions that are particularly suitable for use as coupons or for any other desired use. The booklet comprises a plurality of sheets or layers that are divided generally into (a) a central portion where the layers of the booklet are longitudinally attached to one another and (b) two outer removable portions flanking the central portion. The outer removable portions are intended to be printed with indicia and removed from the booklet and used, as desired, for example, as coupons. The outer removable portions are separable from the central portion through perforations or other lines of weakness. Alternatively, an attachment portion may be provided along one of the outer peripheries of the booklet to allow the booklet to be attached to a magazine, catalog, newspaper or the like. The attachment portion is preferably detachable from the booklet through perforations or lines of weakness.  
           [0005]    In accordance with another aspect of the invention, a booklet is provided, comprising a plurality of sheets having two lines of weakening which define a boundary between a central sheet portion and outer removable portions on each side of the central sheet portion, each line of weakening being suitable for facilitating the separation of the outer sheet portions from the central portion. An attachment joins the sheets together into a booklet. The outer removable sheet portions are intended to be printed with indicia and used as coupons, for example. Preferably, the two lines of weakening which define the boundary between the central sheet portion and outer removable portions comprise perforations, but any suitable line of weakening known in the art will suffice, including lines of weakness or punches.  
           [0006]    In accordance with yet another aspect of the invention, an additional line of weakening may be provided in the aforedescribed booklet which defines a boundary between at least one outer periphery of at least one of the sheets and an attachable sheet portion, the line of weakening being suitable to facilitate the removal of the attachable sheet portion from the at least one periphery of at least one of the sheets. Preferably, the line of weakening comprises a line of perforations, but any suitable line of weakening will suffice.  
           [0007]    In accordance with another aspect of the invention, a method is provided for manufacturing a booklet having a plurality of removable portions. The method comprises conveying a plurality of webs, bringing the webs into registry, and attaching the webs together along a central longitudinal portion of the webs. The webs are also provided with two longitudinal lines of weakening, such as perforations or lines of weakness, which define a boundary between a central longitudinal portion of the web and outer removable portions of the web. These two longitudinal lines of weakening are suitable for facilitating the removal of the outer portions of the web from the central longitudinal portion of the web. The webs are also transversely cut into individual booklets. The method of the present invention may further include a step of forming a line of weakening adjacent to an outer edge of the booklet, which line of weakening defines a boundary between a removable attachment portion and the outer edge of the booklet. The line of weakening so formed facilitates the detachment of the removable attachment portion from the outer edge of the booklet.  
           [0008]    It is to be understood that the removable portions may comprise one or more panels that can be folded over. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0009]    [0009]FIG. 1 is a schematic elevation view of the machinery and webs used for producing the booklet of the present invention;  
         [0010]    [0010]FIG. 2 is an enlarged perspective view of a portion of the webs shown in vertical registry in FIG. 1;  
         [0011]    [0011]FIG. 3 is perspective view of the booklet of the present invention;  
         [0012]    [0012]FIG. 4 is a sectional view of the booklet of FIG. 3 through line  4 - 4 ;  
         [0013]    [0013]FIG. 5 is a perspective view of another embodiment of the present invention;  
         [0014]    [0014]FIG. 6 is a perspective view of yet another embodiment of the present invention;  
         [0015]    [0015]FIG. 7 is a perspective view of still another embodiment of the present invention;  
         [0016]    [0016]FIG. 8 is a perspective view of another embodiment of the present invention;  
         [0017]    [0017]FIG. 9 is a sectional view of the booklet of FIG. 8 through line  9 - 9 ;  
         [0018]    [0018]FIG. 10 is an exploded schematic illustration of the booklet of FIG. 8;  
         [0019]    [0019]FIG. 11 is an exploded schematic illustration of another embodiment of the present invention;  
         [0020]    [0020]FIG. 12 is an exploded schematic illustration of another embodiment of the present invention; and  
         [0021]    [0021]FIG. 13 is an exploded schematic illustration of another embodiment of the present invention.  
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0022]    As used herein, the term “web” means an elongated strip of paper or other material, regardless of origin. Thus, a web may originate from an original roll of paper or a portion thereof, or it may be slit from a larger strip or web of material.  
         [0023]    Referring to FIG. 1, a web press assembly line  10  for forming the inventive booklet is shown in a schematic elevation view. Preferably, a web  12  of material preprinted with suitable indicia is provided for the construction of the present invention. Web  12  is slit at slitting station  14  into three smaller webs  16 ,  18 , and  20 . More webs could be provided, but three webs are shown here for illustration. The separated webs of material  16 ,  18  and  20  are then guided into vertical registry by rollers  22 ,  24 , and  26 , respectively. After webs  16 ,  18 , and  20  are brought into vertical registry, the webs are provided with a suitable line, or lines, of weakening for easy removal of portions of the webs as later described. The line, or lines, of weakening may be of any suitable form known in the art which introduces a “weakness” into the web at the point of the line so that the web can be separated into two portions. Preferably, the line of weakening comprises a longitudinal line of perforations. However, the line of weakening may also, for example, comprise longitudinal lines of holes, indentations, creases, or any other suitable form that introduces weakness. Perforation may occur by any means well known in the art, including perforating wheels or punch devices, for example. FIG. 1 shows perforating wheels  28 ,  30 , and  32  as creating the line of weakening in webs  16 ,  18  and  20 . Alternatively, the line of weakening may be scored into webs  16 ,  18 , and  20 , as is well known in the art.  
         [0024]    After the line of weakening is formed in webs  16 ,  18 , and  20 , a suitable adhesive is applied by dispensers  34  and  36 . Alternatively, the adhesive can be applied concurrently with the formation of such line of weakening. The adhesive is applied between each of webs  16 ,  18 , and  20 . Suitable joining means include, for example, adhesives (pressure-sensitive and not pressure-sensitive), glues, pastes, staples, ties or any other means for joining known in the art. After the adhesive is applied, webs  16 ,  18 , and  20  are married together by rollers  38  and are cut transversely at cutting station  40  into individual booklets  42  that are suitable for consumer use. Preferably, the transverse cut is straight and perpendicular to the outer edges of the webs. Alternatively, the transverse cut may be angled, wavy or non-uniform to provide an aesthetically different and interesting appearance to booklets  42 .  
         [0025]    Although this sequence for producing the present prevention is preferred, one skilled in the art will realize that the steps cited above need not occur in the specified order. For instance, the line of weakening suitable for easily removing portions of the webs may be provided after all of the sheets have been brought into registry and married. Further, adhesive need not be applied prior to marriage of the webs, as mechanical fasteners may be used to join the webs together, for example. Additionally, web  12  need not be a single web but may be a plurality of webs already joined as described above.  
         [0026]    Moving to FIG. 2, an enlarged perspective view is shown of webs  16 ,  18 , and  20  in registry prior to marriage. As can be seen in this view, webs  16 ,  18 , and  20  have lines of weakening  44  and  46 , which are suitable for removing a portion of the webs to be used as indicia-bearing coupons or the like, as described below. At the depicted stage of manufacture, adhesive  48  and  50  is applied to join the webs together. Straight transverse line  52  depicts where the webs will be cut to form individual booklets  42 .  
         [0027]    [0027]FIG. 3 shows a perspective view of a completed booklet  54  in accordance with the invention, having detachable portions made according to the process described above. Booklet  54  is shown consisting of three layers  56 ,  58 , and  60 , which in this embodiment are made of paper. Layers  56 ,  58 , and  60  are portions of web cut from webs  16 ,  18 , and  20 . It is to be understood that in accordance with the invention, booklet  54  may be configured to comprise at least two layers of web material. For example, booklet  54  can be made of three or more sheets according to the present invention. The sheets or layers are preferably made of paper, and each may be of the same or different paper or web stock, may have the same or different weight or caliper, and may be either coated or uncoated. Alternatively, sheets or layers  56 ,  58 , and  60  can be made of any of the different types of web stock known in the art, including, for example, plastic, metal or other suitable material, which may also be of different weight web stock and may be coated or uncoated. Indeed, the sheet or layer material is not limited to web stock, as the booklet may be produced by a process other than by a conventional web press.  
         [0028]    Preferably, sheets or layers  56 ,  58 , and  60  of the booklet are of the same or similar size. However, the size of the individual sheets or layers can be varied. For example, the sheets may be arranged in a pyramidal-type fashion so that each successive sheet is smaller than the sheet on which it sets.  
         [0029]    The sheets or layers of the booklet are attached to each other preferably with an adhesive, which is not shown in this FIG. 3. The adhesive is preferably permanent, but any suitable adhesive may be used. The sheets can also be attached by other means known in the art, including the use of fasteners, staples, ties, or the like.  
         [0030]    In FIG. 3, each sheet  56 ,  58 , and  60  of booklet  54  comprises three portions i.e., two outer removable portions  62  and  66 , and a central joining portion  64 . Line of weakening  68  defines the point of intersection between outer portion  62  and central joining portion  64  and facilitates removal or separation of outer portion  62  from central joining portion  64 . Line of weakening  68  may be a longitudinal line of perforations, weakness, or punched holes, for example. Similarly, line of weakening  70  defines the boundary between outer portion  66  and central joining portion  64  and facilitates removal of outer portion  66  from central joining portion  64 .  
         [0031]    Outer portions  62  and  66  are preferably wider than joining portion  64 . Outer portions  62  and  66  are preferably of equal width, but either outer portion  62  or  66  may be wider than the other outer portion. Producing an outer portion  62  or  66  which is wider than the other outer portion is readily achieved by offsetting the central joining portion  64  from the longitudinal mid-line of booklet  54 . Outer portions  62  and  66  are preferably preprinted with indicia and are intended to be removed from booklet  54  for use as coupons or the like. Joining portion  64  may likewise be printed with indicia for advertising; however, joining portion  64  is intended to hold sheets  56 ,  58 , and  60  of booklet  54  together and may be discarded after all portions  62  and  66  of sheets  56 ,  58 , and  60  have been removed from booklet  54 .  
         [0032]    In an alternative embodiment (not shown), at least one of the panels may terminate at the line of weakening so that such panel comprises one detachable outer portion and one panel for attaching to an adjacent sheet.  
         [0033]    In yet another embodiment (not shown), each sheet of the booklet may include four panels formed by three lines of weakening. This embodiment includes two outer removable portions, one removable portion enclosed between lines of weakening, and one panel that is bound to an adjacent sheet by a suitable means of attachment that joins the sheets together into a booklet. In this embodiment, both the outer removable sheet portions and the removable-enclosed portions are intended to be printed with indicia and used as coupons, for example.  
         [0034]    [0034]FIG. 4 shows a cross-sectional view of booklet  54  taken along line  4 - 4  of FIG. 3. In this embodiment, sheets  56  and  58  are joined together by a layer or bead of adhesive  72 . Similarly, sheets  58  and  60  are joined together by a layer or bead of adhesive  74 . In this embodiment, sheets  56 ,  58 , and  60  are of equal width and have uniform outer edges  76  and  78  which impart a “finished” look to booklet  54 . Alternatively, outer edges  76  and  78  may be contoured in appearance and form, as if formed by tearing, for example.  
         [0035]    Referring now to FIG. 5, another aspect of the present invention is depicted wherein booklet  80  is intended to be inserted into a magazine, newspaper, catalog, or the like. In this embodiment, booklet  80  is formed by three sheets  82 ,  84 , and  86  of material as described above. Sheets  82  and  86  are similarly divided into outer portions  88  and  90  and central joining portion  92 . The boundary between outer portion  88  and central portion  92  is defined by longitudinal line of weakening  94  which facilitates removal of outer portion  88  from booklet  80 . Similarly, the boundary between outer portion  90  and central joining portion  92  is defined by line of weakening  96 , which facilitates removal of outer portion  90 . In this embodiment, sheet  84  is configured similarly to sheets  82  and  86 , but is wider than sheets  82  and  86 . Sheet  84  has two outer portions  98  and  100  which are intended to be removable portions. Sheet  84  also has a central joining portion  102 , which joins sheet  84  to sheets  82  and  86 . Additionally, wider sheet  84  has an attachment portion  104  for attaching booklet  80  to a magazine, newspaper, catalog, or the like by use of a suitable adhesive or other adjoining means, as described above. Line of weakening  106 , similar to lines of weakening  96  or  94 , allows for easy separation or removal of portion  100  from attachment portion  104  and defines the boundary between portions  100  and  104  of sheet  84 . In this embodiment, line of weakening  106  is formed slightly outside of the edge sheets  82  and  86 . Preferably, attachment portion  104  is the narrowest of all portions  98 ,  100 , and  102  and is only wide enough to secure booklet  80  to a publication, such as those described above. As booklet  80  is distributed along with the magazine, newspaper, catalog, or the like, it is easily removed from the accompanying publication by separating portions  100  and  104  of sheet  84  from one another along line of weakening  106 . Attachment portion  104  remains joined to the magazine, newspaper, catalog, or the like after booklet  80  is separated therefrom. In a preferred embodiment, line of weakening  106  is weaker than line of weakening  96  so that a separation more easily occurs along line of weakening  106  than line of weakening  96 . The separation of portion  100  from attachment portion  104  of sheet  84  additionally allows portion  100  to be removed and used in the same manner as portions  88  and  90 . It is to be understood that any suitable or desired number of sheets  82 ,  84  and  86  can be extended with a bind-in strip  104 .  
         [0036]    [0036]FIG. 6 shows a perspective view of another embodiment of the present invention with sheets pulled-back. Booklet  108  comprises sheets  116 , 118 , and  112 . Booklet  108  is similar to booklet  80  shown in FIG. 5. The only differences between booklet  80  and booklet  108  center on the sheet from which the attachment portion extends and where the line of weakening that is adjacent the attachment portion lies with respect to the outer edge. In booklet  80 , attachment portion  104  extends from the wider middle sheet  84 , and line of weakening  106  is set slightly out from the edge of sheets  82  and  86 . In contrast, in booklet  108 , attachment portion  110  extends from wider outer sheet  112 , and line of weakening  114 , which facilitates separation of attachment portion  110  from the rest of outer sheet  112 , is flush with the edge of sheets  116  and  118 . Outer sheet  112  can be the top sheet of booklet  108 ; in an alternative embodiment, outer sheet  112  can be the bottom sheet. The flush position of line of weakening  114  with respect to the edge of sheets  116  and  118  provides an even edge when portion  110  is separated from the remainder of outer sheet  112 . Sheets  116  and  118  are divided into three portions—two outer portions  120  and  124 , and a central joining portion  122 . Again, portions  120  and  124  are preferably printed with indicia to be utilized as coupons or the like. Line of weakening  126 , suitable for facilitating the removal of portion  120  from  122 , defines the boundary between portions  120  and  122 . Similarly, line of weakening  128 , which facilitates removal of portion  124  from portion  122  defines the boundary between such portions. Outer layer  112  comprises four portions  130 ,  132 ,  134 , and  110 . Line of weakening  114  defines the boundary between attachment portion  110  and portion  134 . Line of weakening  136 , which facilitates removal of portion  130  from portion  132 , defines the boundary therebetween. Likewise, line of weakening  138 , which facilitates removal of portion  134  from central joining portion  132 , defines the boundary between portions  132  and  134 . Any attachment portion need not extend beyond the periphery of sheets not having an attachment portion.  
         [0037]    Referring to FIG. 7, a perspective view of still another aspect of the present invention is depicted. Booklet  140  is constructed the same as booklet  80  in FIG. 5 in all respects, except that attachment portion  104  of booklet  80  is replaced with tab portion  142  in booklet  140 . Tab portion  142  of sheet  144  is produced from the action of a die-cut assembly known in the art. Typically, tab  142  is cut from an attachment portion similar to portion  104  in FIG. 5. Tab  142  may be cut from sheet  144  preferably before sheets  144 ,  146 , and  148  are married together before being cut transversely into booklet form. If tab  142  is cut after marriage of sheets  144 ,  146 , and  148 , care must be taken not to allow the die-cut assembly to remove pieces from or cause tearing of either sheet  146  or  148 . Each layer can have its own “index” tab such as tab  142 , if desired.  
         [0038]    Referring to FIGS.  8 - 10 , there is illustrated another embodiment in accordance with the present invention. FIG. 8 shows a perspective view of booklet  150 , and FIG. 9 shows a cross-sectional view of booklet  150  taken along line  9 - 9  of FIG. 8. Booklet  150  is constructed in a manner similar to booklet  80 , previously described with respect to booklet  54  illustrated in FIG. 3. However, the sheets or layers  152 , 154  and  156  of booklet  150  are different. While sheets or layers  152 ,  154  and  156  have a central joining portion  158  with lines of weakening  160  and  162 , sheets or layers  152 ,  154  and  156  have outer portions  152 ′ and  152 ″,  154 ′ and  154 ″ and  156 ′ and  156 ″ that can be composed of multiple panels, as illustrated. For example, outer portions  152 ″,  154 ′,  156 ′ and  156 ″ are each composed of two panels:  152 ″ a ,  152 ″ b ,  154 ′ a ,  154 ′ b ,  156 ′ a ,  156 ′ b ,  156 ″ a  and  156 ″ b , respectively, as more clearly illustrated in FIG. 10. FIG. 10 is an exploded, schematic view of sheets  152 , 154  and  156  of booklet  150  without glue  174  and  176  illustrating the various folds and panels of booklet  150 . Lines of weakening  160  and  162  are illustrated for each of sheets  152 , 154  and  156  with reference numerals  160 / 162 ,  160 ′/ 162 ′ and  160 ″/ 162 ″, respectively as is central joining portions  158 ,  158 ′ and  158 ″. The various panels are made by making appropriate folds  166 ,  168 ,  170  and  172  in each of sheets or layers  152 , 154  and  156  as illustrated. Typically, folds  166 - 172  will be made prior to the attaching of sheets  152 ,  154  and  156  with glue  174  and  176 . Such folds may be made by any suitable method using any suitable equipment as is known in the art.  
         [0039]    In accordance with the invention, various numbers and combinations of roll folds and Z-folds may be utilized so that the removable portions are not limited to the type and number of panels illustrated in FIGS.  8 - 10 . Examples of several such embodiments are depicted in FIGS.  11 - 13 .  
         [0040]    Shown in FIG. 11, for example, is an exploded, schematic view of one embodiment in accordance with the invention, illustrating the use of a first sheet having a simple fold, a second sheet having two Z-folds, and a third sheet having two roll folds. FIG. 11 shows sheets  182 ,  184 , and  186  of booklet  180  without glue. Lines of weakening  188  and  190  are shown for each of sheets  182 ,  184 , and  186 , where they are designated, respectively, as  188 / 190 ,  188 ′/ 190 ′, and  188 ″/ 190 ″. Central joining portion  192  is shown for sheets  182 ,  184 , and  186  as  192 ,  192 ′, and  192 ″. Sheet  182  has a single fold  196  and comprises outer portions  194 ′ and  194 ″. Outer portion  194 ″ is composed of two panels— 194 ″ a  and  194 ″ b —separated by fold  196 . Sheet  184  comprises two outer portions  198 ′ and  198 ″, each of which is configured as a Z-fold. Outer portion  198 ′ is composed of three panels:  198 ′ a ,  198 ′ b ,  198 ′ c . Panels  198 ′ a  and  198 ′ b  are separated by fold  200 ; panels  198 ′ b  and  198 ′ c  are separated by fold  200 ′. Outer portion  198 ″ has analogous panels and folds, as it is comprises panels  198 ″ a ,  198 ″ b , and  198 ″ c . Panels  198 ″ a  and  198 ″ b  are separated by fold  202 ; panels  198 ″ b  and  198 ″ c  are separated by fold  202 ′. Sheet  186  comprises two outer portions  204 ′ and  204 ″, each of which is configured as a roll fold. Outer portion  204 ′ is composed of three panels:  204 ′ a ,  204 ′ b ,  204 ′ c . Panels  204 ′ a  and  204 ′ b  are separated by fold  206 ; panels  204 ′ b  and  204 ′ c  are separated by fold  206 ′. Outer portion  204 ″ has analogous panels and folds, as it is comprises panels  204 ″ a ,  204 ″ b , and  204 ″ c . Panels  204 ″ a  and  204 ″ b  are separated by fold  208 ; panels  204 ″ b  and  204 ″ c  are separated by fold  208 ′.  
         [0041]    In FIG. 12, yet another embodiment is depicted in accordance with the invention. The embodiment shown illustrates the use of a first sheet having two Z-folds directed toward opposite sides of the sheet, a second sheet having one Z-fold and one roll fold directed toward the same side of the sheet, and a third sheet having one Z-fold and one roll fold directed toward opposite sides of the sheet. FIG. 12 shows sheets  212 ,  214 , and  216  of booklet  210  without glue. Lines of weakening  218  and  220  are shown for each of sheets  212 ,  214 , and  216 , where they are designated, respectively, as  218 / 220 ,  218 ′/ 220 ′, and  218 ″/ 220 ″. Central joining portion  222  is shown for sheets  212 ,  214 , and  216  as  222 ,  222 ′, and  222 ″. Sheet  212  comprises two outer portions,  224 ′ and  224 ″, each being a Z-fold directed toward a different surface. Outer portion  224 ′ is composed of three panels:  224 ′ a ,  224 ′ b , and  224 ′ c . Panels  224 ′ a  and  224 ′ b  are separated by fold  226 ; panels  224 ′ b  and  224 ′ c  are separated by fold  226 ′. Outer portion  224 ″ has analogous panels and folds, as it is comprises panels  224 ″ a ,  224 ″ b , and  224 ″ c . Panels  224 ″ a  and  224 ″ b  are separated by fold  228 ; panels  224 ″ b  and  224 ″ c  are separated by fold  228 ′. Sheet  214  comprises two outer portions  230 ′, which is configured as a Z-fold, and  230 ″, which is configured in as a roll fold. Outer portion  230 ′ is a Z-fold composed of three panels:  230 ′ a ,  230 ′ b ,  230 ′ c . Panels  230 ′ a  and  230 ′ b  are separated by fold  232 ; panels  230 ′ b  and  230 ′ c  are separated by fold  232 ′. Outer portion  230 ″ has analogous panels and folds, as it is comprises panels  230 ″ a ,  230 ″ b , and  230 ″ c . Panels  230 ″ a  and  230 ″ b  are separated by fold  234 ; panels  230 ″ b  and  230 ″ c  are separated by fold  234 ′. Third sheet  216  comprises two outer portions  236 ′, which is configured as a Z-fold, and  236 ″, which is configured as a roll fold that is directed toward the opposite side of the sheet from the Z-fold. Outer portion  236 ′ comprises three panels:  236 ′ a ,  236 ′ b ,  236 ′ c . Panels  236 ′ a  and  236 ′ b  are separated by fold  238 ; panels  236 ′ b  and  236 ′ c  are separated by fold  238 ′. Outer portion  236 ″ also comprises three panels:  236 ″ a ,  236 ″ b , and  236 ″ c . Panels  236 ″ a  and  236 ″ b  are separated by fold  240 ; panels  236 ″ b  and  236 ″ c  are separated by fold  240 ′.  
         [0042]    Also in accordance with the invention is the embodiment shown in FIG. 13, which illustrates the use of three sheets  242 ,  244 , and  246  of booklet  241 , each sheet having two roll folds. In this embodiment, the roll folds of top sheet  242  and middle sheet  244  are configured in a downward direction; the roll fold of third sheet  246  is configured in the opposite direction. For each of sheets  242 ,  244 , and  246 , lines of weakening  248  and  250  are designated as  248 / 250 ,  248 ′/ 250 ′, and  248 ″/ 250 ″, and central joining portion  252  is shown as  252 ,  252 ′, and  252 ″, respectively. Outer portions  254 ′ and  254 ″ of sheet  242  are roll folds, each comprising three panels. Outer portion  254 ′ has panels  254 ′ a ,  254 ′ b , and  254 ′ c  and includes fold  256  separating panels  254 ′ a  and  254 ′ b , and fold  256 ′ separating panels  254 ′ b  and  254 ′ c . Outer portion  254 ″ has panels  254 ″ a ,  254 ″ b , and  254 ″ c  and fold  258  separating panels  254 ″ a  and  254 ″ b  and fold  258 ′ separating panels  254 ″ b  and  254 ″ c . Second sheet  244  is configured similarly to first sheet  242  in that it has outer portions  260 ′ and  260 ″, each of which comprises three panels in a roll fold configuration. Outer portion  260 ′ has fold  262  between panels  260 ′ a  and  260 ′ b  and fold  262 ′ between panels  260 ′ b  and  260 ′ c.  Outer portion  260 ″ has fold  264  between panels  260 ″ a  and  260 ″ b  and fold  264 ′ between panels  260 ″ b  and  260 ″ c . Third sheet  246  has outer portions  266 ′ and  266 ″, also configured as a roll fold but folded in a direction opposite from the roll folds of sheets  242  and  244 . Outer portion  266 ′ has panels  266 ′ a  and  266 ′ b  separated by fold  268 , and panel  266 ′ c  adjacent fold  268 ′. Outer portion  266 ″ has analogous panels and folds; i.e., panels  266 ″ a ,  266 ″ b , and  266 ″ c  where panels  266 ″ a  and  266 ″ b  are separated by fold  270  and panels  266 ″ b  and  266 ″ c  are separated by fold  270 ′.  
         [0043]    While the invention has been described with respect to certain preferred embodiments, it is to be understood that the invention is capable of numerous changes, modifications, and rearrangements without departing from the scope or spirit of the invention as defined in the claims.