Ex Parte FUSS et al - Page 4



          Appeal No. 2002-1803                                                        
          Application 09/288,775                                                      

          upstream of the nip, and a program controller 20 for regulating             
          the operation of the apparatus.  The program controller operates            
          to cause (1) the drive roll means to periodically advance the               
          webs from the supply rolls through the nip while the first heat             
          sealing means seals together the longitudinal edges of the webs,            
          (2) the nozzle to periodically introduce a foamable composition             
          between the webs upstream of the nip, and (3) the second heat               
          sealing means to periodically seal the top edge of a formed bag             
          and the bottom edge of the next bag while severing the formed bag           
          from the next bag.                                                          
               Sperry’s bag forming apparatus and method are specifically             
          designed for use in a packaging production line (see column 2,              
          lines 14 through 18; and column 6, line 8 et seq.).  In general,            
          a severed cushion is dropped from the apparatus into a shipping             
          container, the articles being packaged are disposed on top of the           
          cushion, and an additional severed cushion is dropped onto the              
          articles.  Both cushions are severed and dropped into the                   
          container before the composition therein has completely foamed.             
          This allows the cushions to deform into a surrounding and                   
          conforming relationship with the articles when the container is             
          closed and sealed, and to further expand about the articles and             


                                          4                                           



Page:  Previous  1  2  3  4  5  6  7  8  Next 

Last modified: November 3, 2007