Patent ID: 6035613
Filing Date: 2000-03-14
Classification: B31D,B31F,B65D,Y10S

Abstract:
A cushioning conversion machine for converting sheet-like stock material into a dunnage product for packaging, comprising:a first assembly which shapes the stock material into a continuous three-dimensional strip of dunnage having overlapped portions of the stock material; anda second assembly which connects the overlapped portions of the stock material to maintain the three-dimensional shape of the strip of dunnage during use of the dunnage product as packaging, said second assembly including first and second rotatable stitching members,the first stitching member having a circumference and a plurality of radially outwardly extending projections around the circumference, said projections having at least two axially spaced apart segments defining a recess therebetween, andthe second stitching member including at least one axial punch segment including a peripheral edge portion dimensioned to be received in said recess in said first stitching member during rotation of said stitching members, the peripheral edge portion having corner edges at opposite sides thereof and being cooperative with the projections of said first stitching member to cut at each corner edge thereof a row of slits in the overlapped portions of the stock material, thereby forming at least one row of tabs for interlocking the overlapped portions of the stock material.