Other

Crown Zellerbach Corporation

St. Regis Paper Company

James River Corporation of Nevada

Scott B Weldon

Apparatus and methods of the invention create a movable paper machine threading tail that can be shifted away from the front ends of downstream rolls, thereafter to be widened symmetrically from a central position of the machine. Embodiments of the improvement comprise two independently traversable cutting assemblies mounted on one or more transverse service beams. Each cutting assembly comprises a traversing carriage upon which is mounted an appropriate web cutting device. Carriage positioning and cut activation are controlled in a way that one of said tools replaces the machine's somewhat permanently positioned front deckle squirt in defining the front most edge of a threading tail. Apparatus of the improvement also provide the means of creating and removing a sample from a main web without interrupting the path of the web through the machine thereby avoiding the need to re-thread following sampling procedures.

Apparatus for forming a movable threading tail

A system of treating web material wherein the web is transported within a differential relative velocity nip defined by a web support surface and a pick-up member having voids, therein and having a relative velocity differing from that of the support surface at the nip location. Substantially simultaneously with the web treatment the web is applied to the pick-up member with the web impressed into the voids to lock the web against movement relative to the pick-up member.

Apparatus for treating web material

A system of treating web material wherein the web is transported within a differential relative velocity nip defined by a web support surface and a pick-up member having voids therein and having a relative velocity differing from that of the support surface at the nip location. Substantially simultaneously with the web treatment the web is applied to the pick-up member with the web impressed into the voids to lock the web against movement relative to the pick-up member.

Apparatus and process for treating web material

A moving substrate material such as a web of paper, paperboard, film, or other substance is covered with a coating by propelling a coating material onto a deflector bar positioned near the substrate material. The deflector bar is configured to deflect the coating material toward the moving web in a continuous, free standing, smooth jet curtain of coating material. The coating on the web is free of skips, scratches, and other imperfections. In one embodiment, propulsion of the coating material toward the bar is accomplished by rotating a drum, or applicator roll, through the coating material. The surface of the drum or roll carries the material to the deflector bar at a speed and in a sufficient quantity to cause the material to be deflected by the bar in a continuous free standing curtain toward the paper web.

Growing community of inventors

San Mateo, CA, United States of America

Scott B Weldon