B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
281/10, 11/2
B32B 3/06 (2006.01) B42C 3/00 (2006.01) B42D 5/02 (2006.01)
Patent
CA 1077539
ABSTRACT OF THE DISCLOSURE A highly efficient, shear-cutting, multiple die apparatus and method for interlocking elongated, multiple-sheet glued webs such as business forms or computer print out paper during fabrication thereof is provided which positively locks the web sheets against relative shifting an can occur when the web is zigzag folding, in order to prevent "tenting", or permanent, glue-set misalignment between respective web plies at the fold lines thereof. The preferred apparatus in- cludes individual, mated pairs of rotatably mounted, transversely oriented, multiple-blade, pointed, web- shearing and deforming dies which are rotated to co- operatively engage, sheer-penetrate and deform a moving web to produce a series of transversely extending, side-by-side, marginal, alternately displaced inter- locking stripe which effectively prevent significant relative longitudinal shifting between the web plies. The blade tips of the cooperating dies interfit during the web-shearing and displacing operation and serve to provide equal support and driving force for the web on opposite side thereof, so that the web experiences minimum disturbance and no initiating causes for web skewing. The blade tips are contoured such that the opposed ends of the shear-cut strips remain connected to the web, the thus provide the most desirable positive web interlock, even at high or varying web speeds. In preferred forms, press-ironing rings are rotated with the interlocking dies for ironing the glued portion of the web in conjunction with formation of the interlock- ing strips.
284762
Clifton Kenneth C.
Gladow Dean E.
Didde-Glaser
Didde-Glaser Inc.
Na
LandOfFree
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