Beloit Corporation

Scott E Filzen

David V Lange

Timothy L Hauser

A press apparatus is disclosed for pressing a formed web of paper. The apparatus includes an extended nip press for pressing water from the formed web. A press roll is disposed downstream relative to the extended nip press, and a roll cooperates with the press roll for defining therebetween a roll couple for further pressing the web such that substantially uniform surface characteristics are imparted to both sides of the web.

Press section with inverted extended nip press and roll press

An extended nip press apparatus is disclosed for pressing water from a web of paper. The press includes a blanket which defines an endless loop and a first and a second lateral edge. Edge seals cooperate with the edges for sealing the edges of the blanket against egress of lubricant disposed between the shoe and the blanket. The edge seals include a head rotatably secured to a frame and an extension which extends from the head. The extension cooperates with the first edge of the blanket and defines a duck's bill configuration in a cross-machine sectional view such that the first edge of the blanket conforms to a surface defined by the extension. The surface has a first portion which undulates radially away from the head in an outward direction, and a second portion which undulates radially inwardly towards the head in an outward direction. A clamp adjustably secures the first edge of the blanket to the extension so that flow of lubricant from between the shoe and the blanket past the head is inhibited.

Extended nip press apparatus with blanket edge seals

An enclosed extended nip press apparatus is disclosed for pressing water from a formed web. The apparatus includes a frame and a backing roll rotatably secured to the frame. A press member cooperates with a backing roll for defining therebetween an extended nip for the passage therethrough of the formed web. A press blanket extends in a closed loop through the nip, the blanket having a first and a second lateral edge and an inner and an outer surface. A first and a second head are rotatably secured to the press member with the first and second heads being disposed adjacent to and cooperating with the first and the second edges respectively of the blanket. The first and the second heads define first and second annular channels respectively for the reception therein of the first and the second lateral edges respectively of the blanket. A first and a second annular seal are disposed within respectively the first and the second channels with the seals contacting the respective edges of the blanket. A first and second plurality of barbs extend from the first and the second channels respectively such that the first plurality of barbs extend towards and engage the first lateral edge of the blanket and are disposed on the opposite surface of the blanket relative to the first seal. The second plurality of barbs extend towards and engage the second lateral edge of the blanket. The second plurality of barbs are disposed on the opposite surface of the blanket relative to the second seal so that during use of the apparatus, lateral movement of the edges of the blanket relative to the heads is inhibited.

Enclosed extended nip press apparatus with inflatable seals and barbs

A bearing blanket is disclosed which extends through an extended nip defined by a shoe and a cooperating backing roll for pressing water from a formed web. The blanket includes a woven-base fabric which defines a web side and a shoe side, and a single liquid impervious urethane layer which is applied to the web side of the base fabric such that the urethane layer thoroughly penetrates into and through the base fabric. The arrangement is such that when the urethane layer is cured, the urethane layer defines a web face and a shoe face. The web face is spaced relative to the web side, with the web face defining a plurality of vents for conveying water pressed from the web away from the extended nip. The shoe face is substantially co-planar with the shoe side of the base fabric such that the shoe face is relatively smooth for cooperating with and moving relative to the shoe.

Growing community of inventors

Beloit, WI, United States of America

Scott E Filzen