Pleated and cellular materials and method for the manufacture thereof using a splitter

A cellular shade for covering a window, said shade comprising:

• a plurality of longitudinally extending, substantially parallel interconnected fabric cells, wherein substantially all cells within said plurality of cells are each constructed from at least one piece of material forming a single sheet of material and have for each cell:
• a front side and a rear side;
• a crease forming a tip on said front side;
• an upper cell wall extending from said crease and having a rear free edge, said upper cell wall having a longitudinal center line equidistant along said upper cell wall from said crease and from said rear edge of said upper cell wall;
• a lower cell wall extending from said crease and having a rear free edge, said lower cell wall and said upper cell wall being substantially equal in length;
• and
• a fin on said rear side, wherein said fin is formed by joining a portion of said upper cell wall adjacent said rear free edge of said upper cell wall with a portion of said lower cell wall adjacent said rear free edge of said lower cell wall;
• and
• material located on at least one of said upper cell wall and said lower cell wall for attaching each cell of said plurality of cells to an adjacent cell of said plurality of cells.