Abstract: A method and apparatus is provided for simultaneously producing wide and narrow slit tape from the same master roll.

Abstract: An apparatus for forming a wound roll of discrete overlapping sheets of web from a supply of continuous web. The web preferably is passed around a nip roller that steers the web onto the surface of a take-up core. A knife assembly including a knife blade extended from a knife holder is driven by a traversing mechanism across the width of the web to cut the wound web on the core into discrete sheets, the extended height of the knife blade being preferably the exact thickness of the web. In transverse cutting by the knife of the web wound on the take-up core, the knife holder travels on the outer surface of the web, thus assuring that the knife blade extends just to the outer surface of the next inner convolution of web, thereby cutting the continuous web into sheets without damaging previously wound web convolutions.

Abstract: A paper web (W) is longitudinally divided into slit webs of desired widths and the slit webs are wound into rolls (R) about roll cores (H) at a winding station (17A, 17B). The web is cut by a web-severing device (16) in conjunction with the roll set change of the winding operation. At least two slitter assemblies (15A, 15B) are employed for slitting the web (W) and, when given ones of the slitter assemblies (15A, 15B) are slitting the web (W) into one set of slit webs, the desired ones of the other slitter assemblies (15A, 15B) are preset into desired slitting width positions for slitting the next set of slit webs. The winding apparatus has slitter assemblies (15) for longitudinally dividing a web (W) into slit webs and a winding station (17A; 17B) for winding the slit webs into rolls (R) and a web-severing device for cutting the web.

Abstract: When the setting of a web slitter winder blades (41, 42) is changed during slitting in order to slit component webs (Wo) of different widths, the width of the edge trimming formed changes and an untrimmed neck remains between the edge trimmings of different widths. A cutting apparatus (50) makes a cut between the slitting line of an edge trimming according to an old blade setting and the slitting line of an edge trimming according to a new blade setting controlled by a control system (59).

Abstract: When the setting of a web slitter winder blades (41, 42) is changed during slitting in order to slit component webs (WO) of different widths, the width of the edge trimming formed changes and an untrimmed neck remains between the edge trimmings of different widths. A cutting apparatus (50) makes a cut between the slitting line of an edge trimming according to an old blade setting and the slitting line of an edge trimming according to a new blade setting controlled by a control system (59).