Partition structures

Claim 1

AN INSERT BLANK ADAPTED FOR RAPID TRANSFORMATION INTO A CELLULAR INSERT FOR DIVIDING PACKING CONTAINERS INTO CELLULAR COMPARTMENTS; SAID INSERT BLANK COMPRISING A SHEET OF FLEXIBLE SHEET MATERIAL HAVING SIDE MARGINS AND END MARGINS, AN END TAB PROJECTING OUTWARDLY BEYOND ONE END MARGIN OF SAID SHEET, AND AN END FLAP PROJECTING OUTWARDLY FROM AN OPPOSITE END MARGIN OF THE SHEET, SAID SHEET HAVING A CENTER PORTION WHICH IS TRAVERSED BY A SCORE LINE INTERPOSED BETWEEN SAID SIDE MARGINS, SAID SHEET BEING CUT OUT IMMEDIATELY INWARDLY FROM SAID END FLAP IN THE PROVISION OF AN APERTURE WHICH IS ADAPTED TO RECEIVE SAID TAB WHEN ENDS OF SAID SHEET ARE FOLDED OVER ONTO THE CENTER PORTION THEREOF, SAID SHEET BEING CUT BETWEEN SAID CENTER PORTION AND SAID APERTURE ALONG A LINE SUBSTANTIALLY COLINEAR WITH SAID SCORE LINE IN THE PROVISION OF A FIRST SLIT LINE, SAID SHEET BEING CUT BETWEEN SAID SECOND SCORE LINE AND THE INNER MARGIN OF SAID TAB ALONG A LINE SUBSTANTIALLY COLINEAR WITH SAID SCORE LINE IN THE PROVISION OF SECOND SLIT LINE, WHEREBY EACH END OF SAID SHEET CAN BE FOLDED ONTO THE CENTER PORTION THEREOF SO THAT SAID END TAB CAN ENGAGE SAID APERTURE WHEREUPON THE FOLDED SHEET CAN BE FOLDED OUTWARDLY AWAY FROM SAID TAB AND APERTURE ALONG SAID SCORE LINE TO FORM AN ASSEMBLED CELLULAR INSERT.