Abstract: The present invention is an improved coating roll drive that used frameless, inside out motor and a set of magnetic bearings, axial and radial, mounted inside a coating roll to provide adaptive positioning of the coating roll relative to a given reference, such as a hopper lip. The present invention minimizes the variation of distance between the coating roll and the given reference during operation.

Abstract: A shallow vessel (50,52) for being horizontally disposed when containing a molten metal or metal alloy (66) for meniscus coating one side of a clean metal strip (34A) when the strip is moved vertically past one side of the vessel. The vessel includes a shell (68) such as austenitic stainless steel, a refractory lining (70), a molten metal departure lip (72) mounted on the upper surface of the side of the vessel, a spirally shaped induction coil (64) for maintaining the molten metal above its melting point and a flux concentrator (74). The induction coil is positioned below the refractory lining and the flux concentrator is positioned below the induction coil. The induction coil and the flux concentrator underlie the area occupied by the molten metal.

Abstract: The invention is related to a continuous coating apparatus for applying molten metal on a metal sheet or tape. The apparatus has an annular cylinder having an open lower section extending to a substantially closed upper section. An axle is mounted in the lower section normal to the cylinder axis, and a spool is mounted on the axle. A pair of tubes are mounted parallel to the cylinder axis inside the cylinder on oppositely facing surfaces so that a tape extending around the spool towards the upper section extends through the tubes.

Abstract: Liquid process streams--such as white water, pressate, or washer filtrate from a pulp and paper mill--are clarified in an efficient manner using a gas sparged hydrocyclone, which takes up a minimum of floor space. A liquid stream having a consistency of less than about 0.5% solids is introduced into a first end of a vortex. Gas is sparged into the liquid in the vortex to cause particles to attach to gas bubbles and move through a rejects outlet at the first end of the vortex, while clarified liquid is removed from a second end of the vortex. A pedestal is typically provided at the accepts outlet, having a radial clearance with the inside of a porous tube through which the gas is sparged that is about 8-12% the radius of the porous tube.

Abstract: An extrusion type coating apparatus having a coating head with a back edge end face and a doctor edge end face set close to a flexible support which is continuously run and with which a coating solution is applied to the flexible support. The inner edge of each of a pair of coating width regulating members made of metal and which are arranged in the slot of the coating head at respective ends thereof, are formed to have a radius of curvature of 0.5 mm or less, and the downstream edge of the end face of each coating width regulating member is continuous with the upstream edge of the doctor edge end face, while the upstream edge of the end face of each coating width regulating member is abutted against the inner wall of a back edge forming the coating head with the distance between the slot forming edge of the back edge end face and the upstream edge of the end face of the coating width regulating member set to half or less of the gap width of the slot.

Abstract: A mold composed of bonded water-insoluble particles and having a molding layer and a support layer. The molding layer includes first water insoluble particles, having an average size of 0.2-1.0 mm bonded to form a layer having a thickness 1-20 times the average size of the first particles. The support layer positioned on the inner surface of the molding layer, on which the fiber bodies are not formed, includes of second water-insoluble particles, having an average size of 1.0-10.0 mm, bonded to form a layer having a thickness of at least the average size of the second particles. The pulp mold has advantages in that it hardly suffers from clogging, it produces fiber bodies each having a smooth surface, it is free from damage caused by repeated use, and it produces fiber bodies in a short period of time.

Abstract: Apparatus and method for separation, recovery, and recycling municipal solid waste and the like by introducing solid waste materials into a rotatable pressure vessel, rotating, pressurizing, adding pH controlling chemicals and heating the pressure vessel and thus the waste material while simultaneously applying a mixing action to the solid waste material. The addition of a predetermined amount of pH controlling chemicals and the application of a vacuum serve to control the moisture content of the final fine organic portion of the processed material. Organic contents of the vessel are pulped and sterilized when processed to facilitate ease of separation and prepare the resulting cellulose material for use.

Abstract: Web offset printing paper having a high level of gloss and smoothness is prepared by finishing a paper web, either by supercalender or with a synthetic roll calender at a moisture content greater than the moisture content typically used for web offset finishing, and then drying the web to a moisture content of less than about 3.5% using convection, radiation or conduction. Under the preferred post-drying conditions, bonding of the previously wet paper fibers takes place to lock in the desirable printing characteristics and to prevent heat roughening on the offset press.

Abstract: A paste dispenser having a paste reservoir and an applicator for containing and applying paste to wallpaper. A package having a container and a base, transformable between a package configuration wherein the paste dispenser is received within the container and the container is closed by the base, and an applicator configuration wherein the base extends from the container and carries the paste dispenser. Arresting means in contact with the wallpaper for limiting the flow of paste from the paste dispenser.

Abstract: A creping doctor apparatus includes a creping doctor (4) having a doctor blade (5) with a working edge (6). The creping doctor (4) is pivotable around a rotational axis (12) formed substantially at the working edge (6) to permit adjustment of an impact angle (A) formed at the working edge (6) between an impact surface of the blade edge and the cylindrical surface (2) of a Yankee dryer (3), from which an adhering paper web (1) is to be creped off. The impact angle (A) controls the result of the creping operation, e.g. the caliper and/or the macrostructure of the soft crepe paper web produced, but wear of the working edge (6) gradually causes a change in the impact angle (A) and, thereby, in the creping conditions. To maintain the desired caliper and/or the desired macrostructure as far as possible it is necessary to compensate for the wear of the working edge (6) by pivoting the creping doctor (4) substantially around the working edge (6) so as to maintain the impact angle (A).

Abstract: A pulp molding die for molding shaped articles from fiber pulp is disclosed. The die has a porous molding layer having a porosity of at least 5% and an average pore diameter in a range of 60 to 1000 .mu.m, the porous molding layer having a molding surface shaped to the configuration of the article to be molded; and a porous support layer disposed adjacent the porous molding layer on the opposite side thereof from the molding surface, the porous support layer having a porosity of at least 20% and an average pore diameter in a range of 0.6 to 10 mm, the average pore diameter being larger than that of the porous molding layer. The porous molding layer and/or the porous support layer have a pore structure for holding water.

Abstract: The present invention describes slot inserts for use in a coating hopper having at least one metering slot. The slot inserts allow widthwise adjustment of the coating width. The slot inserts push fit into the metering slot and are held by friction between the walls of the metering slot. In one aspect of the invention, the inserts have different widthwise dimensions at each end allowing control over the edges. For dual cavity hoppers, the slot inserts can be shaped so as to prevent stagnant regions within the hopper cavities.

Abstract: This invention relates to a process for manufacturing a flat, fibrous, supple substrate, difficult to tear, said process consisting in:preparing by fibrillation natural cellulosic fibers until their drainability is greater than 60.degree. Schopper-Riegler,mixing in water a batch of cellulosic fibers thus refined and at least 30% by weight on dry matter of artificial fibers, with respect to the whole quantity of said artificial and cellulosic fibers,diluting the mixture obtained,and producing a substrate sheet from a machine supplied with the mixture.The invention is more particularly applicable to the manufacture of envelopes and sachets.

Abstract: The present invention is an apparatus for guiding the edge of a free-falling curtain. The apparatus includes first and second slides positioned at the top of the curtain which merge. An edge guide is positioned at the point where the slides merge. A lubricating liquid is provided to each slide surface which flows down each slide and the edge guide to guide the edge of the free-falling curtain. The present invention allows time for surfactant in the lubricating liquid time to diffuse to the surface and promotes dampening of disturbances in the lubricating liquid.

Abstract: A method and apparatus for forming articles, used as dunnage material, from pulped paper products includes a paper shredder that forms the pulped paper and delivers it to a slurry tank. The slurry tank gravity feeds the slurry into a slurry reservoir where a pump pumps the slurry into molds. A plunger delivers compressed air to the slurry blobs contained within each molds to expand the slurry blobs to the shape of the molds and to force the water in the slurry through an outlet in the bottom of the molds to a vacuum chamber connected to the molds. The delivery of compressed air further forms a cavity within the expanded slurry blobs. During the next four steps, the molds again connect to the vacuum so that additional water is forced from the pulp into the vacuum chamber. Finally, an ejector supplies compressed air to the bottom of the molds such that the finished articles are propelled from the molds onto a conveyor which delivers the cubes to packaging machines.

Abstract: The amount of coating applied by an applicator is locally adjusted by locally disturbing the flow to the metering outlet, for example, by locally bleeding selected amounts of coating from the metering chamber of the coater to thereby controllably profile the amount of coating applied.

Abstract: An apparatus serves for the metered coating of an inking roller (1) with a fluid coating medium, in particular an inking roller in a printing press which directly or indirectly inks a printing form, whereby the inking roller (1) is in contact with a soft transfer roller (2) or soft printing roller arranged in parallel, and whereby the surfaces of the inking roller (1) and the transfer roller (2) or the printing roller respectively at least have a path speed which is more or less identical. The surface of the inking roller (1) dips directly into the coating medium (3), whereby the thickness of the film of coating medium (3) remaining on the surface of the inking roller (1) is determined by a wiping roller (4) which is arranged parallel to the inking roller (1), is supported on this, has an engraving and, in comparison to the inking roller, a small outside diameter.

Abstract: A flat bed, Fourdrinier-type, countercurrent washer for cellulosic pulp incorporates a pressing section at the downstream end thereof which includes the couch roll and additional rolls that carry out multiple mechanical pressing operations on the pulp after it has been subjected to multiple stages of displacement washing without mechanical treatment. As a result, where such washers without mechanical pressing deliver pulp of a consistency of the order of 15% solids, this washer increases the pulp consistency to as high as 40% while correspondingly increasing the effectiveness of the washing operation as a whole.

Abstract: The present invention is directed to a coating device for application of coating material to the surface of a web or a flexible substrate. The coating device contains a pressurized channel where a flowing stream of the coating liquid first comes into contact with the substrate. The coating liquid enters the channel at the upstream side and wets the substrate as it flows in the same direction as the substrate. A doctor element is positioned at the downstream side of the channel where the excess coating in the channel follows the contour of the boundary formed by the doctor element and leaves the channel. The geometry of the streamlined boundaries of the coating device eliminate the formation of recirculating eddies or vortices. The elimination of vortices eliminates flow instability due to centrifugal forces and removes harmful pressure fluctuations which could result in coat-weight nonuniformities.

Abstract: A backside textured papermaking belt is disclosed which is comprised of a framework and a reinforcing structure. The framework has a first surface which defines the paper-contacting side of the belt, a second surface opposite the first surface, and conduits which extend between first and second surfaces of the belt. The first surface of the framework has a paper side network formed therein which defines the conduits. The second surface of the framework has a backside network with passageways that provide surface texture irregularities in the backside network. The papermaking belt is made by casting a photosensitive resinous material over and through the reinforcing structure while the reinforcing structure travels over a textured surface, and then exposing the photosensitive resinous material to light of an activating wavelength through a mask which has transparent and opaque regions.