Abstract Apparatus for continuously cutting side-by-side rectangular perforated areas in a web of paper or non-woven material. The apparatus includes spaced machine direction perforator wheels with coacting anvil wheels, a cammed slitter to cut short slits in the machine direction in the corner areas of the eventual rectangular perforated area and a transverse perforator including flexible rotating knives and a stationary anvil blade for cutting transverse perforations which outline the side-by-side rectangular perforated areas. The apparatus is preferably used for cutting perforated areas in a web which will later be converted into individual diaper topsheets, each of which has a perforated removable area. The perforations are in the form of short cuts, but the corners are preferably formed with elongated slits in order to facilitate removal and separation in the ultimate product.
A cammed slitter mechanism for forming a longitudinal slit in a moving web comprising: a. a deadplate for supporting said web during movement thereof, said deadplate having at least one opening therein, b. slitting means mounted beneath said opening in said deadplate, and c. means for periodically pushing said web through said opening and causing it to momentarily contact said slitting means to form an elongated longitudinal slit in said web.
Claim 2
Dependent Claim
71 words
A cammed slitter mechanism for forming a longitudinal slit in a moving web comprising: a. a deadplate for supporting said web during movement thereof, said deadplate having at least one opening therein, b. slitting means mounted beneath said opening in said deadplate, and c. means for periodically pushing said web through said opening and causing it to momentarily contact said slitting means to form an elongated longitudinal slit in said web.
Claim 3
Dependent Claim
19 words
A cammed slitter mechanism as claimed in claim 1 wherein said slitting means comprises a continuously rotating slitter wheel.
Claim 4
Dependent Claim
40 words
A cammed slitter mechanism as claimed in claim 1 wherein said means for periodically pushing said web comprises a rotating member above said opening, said rotating member having a lobe with a slot at its distal end extending radially therefrom.
Claim 5
Dependent Claim
40 words
A cammed slitter mechanism as claimed in claim 2 wherein said means for periodically pushing said web comprises a rotating member above said opening, said rotating member having a lobe with a slot at its distal end extending radially therefrom.