Abstract:
Articles, for example multi-ply fibrous structure-containing articles such as multi-ply sanitary tissue products, containing two or more fibrous structure plies, and more particularly to multi-ply articles containing two or more fibrous structure plies having a plurality of fibrous elements wherein the articles exhibit improved bulk and absorbent properties compared to known articles and methods for making same, are provided.
Abstract:
Apparatus and method for producing absorbent structures with absorbent layers with channel(s) without absorbent material, using a first moving endless surface with specific raised strip(s) and a second moving endless surface with specific mating strip(s).
Abstract:
A cellulose dewatering machine for producing paper has a sieve dewatering device, a pressing device, a drying device and a subsequent transverse cutter, and the dewatering device has a round sieve cylinder unit.
Abstract:
A machine for the manufacture of a multi-layer fibrous web includes at least two fibrous web layers and at least two formers; the fibrous web layers each having a lower fines side with a lower fines content and a higher fines side with a higher fines content; and the formers include a first former and a second former, at least one of the two formers being a gap former, with the second former including a couch roll defining a couching zone whereat the lower fines side of the first fibrous web layer is brought into contact with the lower fines side of the second fibrous web layer.
Abstract:
The papermaking machine contains an endless inner dewatering band which extends or wraps with its inner side or surface around two series or successively arranged sections of dewatering surfaces. In each wrap-around section thus defined the inner dewatering band is convergently guided or brought together with a portion of a respective endless outer dewatering band towards an infeed throat or gap and a dewatering section following the same. From each dewatering section the associated outer dewatering band is returned towards its related infeed throat or gap. Two headboxes each of which is directed towards a related one of the infeed throats or gaps are provided, so that there are formed two fiber layers or plies which are to be joined. To achieve a compact and simple construction the series or successively arranged sections of the dewatering surfaces are formed at a common dewatering element which is centrally arranged relative to the infeed throats or gaps. The dewatering element may comprise a solid or a water pervious dewatering surface.
Abstract:
A wire is passed over the suction breast roll between the formed paper web and the doffer belt or the previously formed paper webs and doffer belt. The doffer felt is disposed in an unencumbered fashion over each of a plurality of consecutive suction breast rolls. The wire is removed from the web at a downstream point outside the dewatering influence of each breast roll. Stripping of the wire from the paper web is aided by various suction devices or couch rolls at this latter point.
Abstract:
A high speed, multi-cylinder arrangement for manufacturing multi-ply paper includes units each having a wire cylinder encircled in part by an endless wire screen which, in turn, is encircled in part by an endless felt. Stock is supplied onto the endless wire screen and into a sheet forming zone between the wire screen and the felt. A suction slider is located adjacent the location of the separation of the wire screen from the wire cylinder. Downstream of the suction slider, a suction box is provided for holding paper to the felt as the felt and wire screen are separated.
Abstract:
A headbox is disclosed having vertical flow chamber connected to a curved a tapered nozzle which defines a slice opening for jetting paper stock from the flow chamber along a that having both horizontal and vertical components and into a nip above a cylindrical forming roll and beneath a felt tangentially engaging an upper portion of the forming roll. The headbox nozzle has an upper and lower lip projecting into the nip. an adjusting mechanism is provided for the upper lip which includes a plurality of adjusting arms each connected on one end to the top of the upper lip proximate to the slice opening. the arm projects from the slice opening toward the flow chamber end of the nozzle and diverges from the upper lip to define a generally wedge-shaped space between the arm and the upperlip. A horizontal pivot is connected to the arm intermediate the ends thereof. A journal is connected to the pivot and has a like portion which spans the space between the adjusting arm and the upper lip and is connected to the upper lip. The adjusting arm is made up of a first and a second section pivotally connected by a horizontal pin at a location between the journal and the flow chamber end of the adjusting arm. The section that comprises the slice opening end of the arm has a portion projecting around the pin with a terminal end of this portion vertically spaced above the other of the section. A vertically adjustable link connects this terminal end portion of the one section, to said other of the section, to said other of the section, to provide for holding the two sections of each arm in variable preselected angular positions relative to each other for warping the upper slice lip to provide a desired profile to the upper lip. A horizontal rotatable drive shaft is mounted on the headbox adjacent the flow chamber end of the adjusting arm and this shaft has a horizontal pin attached to the periphery of the shaft which projects into a slot defined in the adjacent end which projects into a slot defined in the adjacent end of the arm. Rotation of the drive shaft raises and lowers the connected end of the adjusting arm about the pivot and bends the upper lip to vertically adjust the position of the slice opening end of the upper lip relative to the lower lip.
Abstract:
Disclosed are methods for manufacturing laminated paperboard materials that are alternatives to plastic, wood, and wood-like materials, such as plywood, medium-density fiberboard (MDF), and oriented strand board (OSB). Also disclosed are structures formed from thick-caliper laminated paperboard materials.