Patent ID: 6092354
Filing Date: 2000-07-25
Classification: B26D,B26F,B29C,B65B,Y10T

Abstract:
A perforated separation line forming apparatus characterized by:an edged rotary body having a round slitting edge; anda receiving rotary body having a receiving circumferential surface that the round slitting edge engages;wherein the edged rotary body and the receiving rotary body are arranged to clamp a perforated line forming position of a continuously fed transfer material therebetween;wherein the receiving circumferential surface of the receiving rotary body is formed with non-slit portion forming recesses, which the round slitting edge of the edged rotary body cannot engage, at predetermined intervals in the direction of rotation, so that the perforated separation line formed at the perforated line forming position has slit portions and non-slit portions alternated successively;wherein the receiving rotary body is movably adjustable relative to the edged rotary body in an axial direction; the non-slit portion forming recesses of the receiving rotary body are so shaped that a circumferential width of the recesses in the direction of rotation changes in an axial direction of the receiving rotary body; and as a result of the relative movement of the receiving rotary body in the axial direction, the circumferential width of the non-slit portion forming recesses in the direction of rotation varies so that a ratio between the slit portions and the non-slit potions is variably adjustable.