Abstract: A paper pulp processing mechanism and method for screening large flows of wood chips including a screening bed for receiving a delivery of a quantity of wood chips at a screening receiving station, the flow of chips dividing to flow laterally in one direction over a first lateral bed section extending laterally and upwardly and to also flow over a second lateral bed section extending laterally and upwardly with each section extending away from the receiving station to a delivery end and each path defined by a plurality of laterally extending rotatable shafts having disks thereon interdigitally related.

Abstract: Papermachine felts and wires are cleaned and maintained by pressurized fluid jets or showers which are oscillated transversely across the felt running direction over a fixed oscillation stroke distance. Superimposed on the fixed stroke distance is a periodic shift of the stroke reference point so that successive oscillations are not terminated at the same point. The oscillation drive mechanism is enclosed within a low pressure, gas-tight housing serviced by a pressure regulated gas supply. A reversible A-C motor is used to drive the mechanism.

Abstract: An apparatus for treating a fiber suspension, comprises a drum rotatably journalled to a stand and having an envelope surface to support a fiber web formed from the fiber suspension. A curved wall plate which is concave in the direction to the envelope surface of the drum is spaced from the envelope surface (and generally parallel thereto) to define a material space therebetween for said fiber web. The space includes an axial inlet gap and an axial outlet gap. The wall is continuous and encloses a major portion of the envelope surface of the drum and is arranged to move freely in the circumferential direction of the drum to compensate for radial alterations during adjustment of the distance of the wall from the envelope surface at one or more positions between the inlet gap and outlet gap. Adjustment devices cooperate with the wall for adjusting the distance of the wall from the envelope surface of the drum.

Abstract: Disclosed in a process for producing gloss and smoothness on the surface of a paper web, comprising:A. advancing a web of papermaking fibers through a nip formed by a smooth metal finishing drum and a resilient backing roll; andB. heating the drum to a temperature at least high enough to heat a substrata portion of the web to a temperature in which gloss and smoothness rapidly increase with increasing temperature due to thermoplastic molding of the substrata beneath the surface and at a temperature higher than where substantial gloss and smoothness would have already been obtained by molding of the surface of the web.

Abstract: A deicing product comprising a mixture having, based upon the total weight of solid in said deicing product between 12% and 75% acetate salts, trace amounts and 36% carbonate salts, 1 and 24% formate salts, 1 and 32% pseudolactate salts. The cations of said salts are selected from the class consisting of sodium, magnesium, calcium, potassium. Lignin fractions and low molecular weight sugars may also be present, as well as other chemicals derived from the method of making black liquor and this new product. A method of making same is disclosed. It comprises using a black liquor obtained from a pulp mill operation, fractionating said black liquor into a low molecular weight fraction, concentrating said collected low molecular weight fraction to produce a concentrated deicing product.

Abstract: The present invention provides a process for the detection of redox reactions by introducing a redox reagent system into a test system, wherein a soluble iodate is additionally added to the test system in an amount which is in excess of the highest amount of disturbing reducing agents present in the test system.The present invention also provides a diagnostic agent for the detection of redox reactions containing a redox reagent system, wherein the test system used additionally contains an iodate which is soluble therein in an amount which is in excess of the highest amount of disturbing reducing agents present in the test system.

Abstract: A composition having regulated occurrence of opacity and clarity at selected temperatures; method of making and using such a composition to create a temperature-indicating device by filling the composition in a suitable container of transparent material and having a background in the form of a color, a letter or a number i.e., in order to be able to visually interpret the difference between opacity and clarity. A reversible indicating device is made which can show if the upper or lower limits of a pre-set temperature interval has been exceeded or fallen below.

Abstract: A guiding apparatus is disclosed for guiding an extended nip press blanket relative to a pressing shoe. The apparatus includes a nose member which is pivotally-connected to the shoe for guiding the blanket relative to the shoe. An actuator is secured to the shoe for pivoting the nose member relative to the shoe. A connector extends between the actuator and the nose member for connecting the actuator to the nose member such that when the actuator is actuated, the nose member is skewed relative to the shoe so that the blanket is guided laterally relative to the shoe as the blanket moves over, and in contact with, the nose member.

Abstract: A press apparatus is disclosed for removing fluid from a fibrous web. The apparatus includes a press member and a blanket cooperating with the press member for defining therebetween an elongate pressing section such that the web is pressed between the press member and the blanket during passage through the pressing section. The blanket is urged towards the press member such that when the web passes through the pressing section, fluid is pressed from the web. A heating device is disposed adjacent to the press roll for transferring heat to the web such that when the web passes through the pressing section, the web is subjected for an extended period to increased pressure and temperature so that water vapor generated within the pressing section during the passage of the web through the pressing section forces the fluid in the liquid phase away from the web.

Abstract: A method of making a papermaker's felt which includes the steps of forming a pin seam fabric having interdigitated loops at the ends of the fabric joined by a pin. A batt of fibrous material is needled into at least one face of the fabric and across the pin seam joint. When the felt is to be installed on the papermaking machine, the pin is removed and the felt is bent back on itself at the joint to bring the portions of the batt adjacent the joint into contiguous or contacting relation and cause the loops to separate. The batt is then cut along a line extending through the separated loops to provide a flat or opened felt which can then be installed on the papermaking machine. After installation, the loops are interdigitated and the pin is reinserted through the loops to provide the endless felt construction.

Abstract: Processes for treating waste paper containing aluminum and having a high lignin content are disclosed, including producing an aqueous pulp suspension of the waste paper, screening the pulp suspension, dewatering the pulp so as to produce a first white water stream including most of the aluminum, delignifying the pulp suspension with oxygen, separating a portion of the aqueous liquid from the delignified pulp to produce a separated pulp stream and a second white water stream which is substantially free of aluminum, transferring the separated pulp to a paper mill, diluting the separated pulp stream with a dilution liquid stream in the paper mill, evaporating the second white water stream, and transferring at least a major part of the first white water stream to the paper mill for use as the dilution liquid therein.

Abstract: A method for forming a paper web by which web formation is improved and flocculation in the web is reduced includes the steps of feeding steam under pressure into the fiber suspension when the suspension enters into the gap of the former and as web formation is initiated over the perforated mantle of the forming roll. The steam is fed from a steam supply chamber or the like provided within the forming roll through the perforations in the roll mantle within a steam supply sector of the roll mantle. The steam feed is applied to the pulp web when the web is still substantially uncouched and in a manner such that when the steam condenses in the pulp suspension, an implosion is generated in the pulp suspension which produces high frequency mechanical vibrations which can be closely controlled to achieve the desired effects. A twin-wire former and forming roll therefor for applying the method are also disclosed.

Abstract: For the purpose of cleaning the doctor blade of a roller of a paper mill, a blade scraping device mounted upon an end of the frame retaining the doctor blade, the device having spring loaded scraping jaws between which the blade is drawn upon being withdrawn from its operating position.

Abstract: Cellulosic fibers containing latex solids are recovered from latex bonded broke by agitation of the broke in an aqueous alkaline solution having an alkali metal hydroxide concentration of 0.5 to 1.5 mol percent for a period of time in the range of ten minutes to four hours. The resulting fibers containing cured latex solids may be added to conventional papermaking fibers in amounts as high as 10 to 15 percent by weight for the production of facial quality tissue to produce a high quality product web.

Abstract: A system for forming a web from a dilute, aqueous slurry of fibers wherein a thin, horizontally-extending aqueous stream of fibers is projected onto a travelling foraminous forming wire. The forming wire is disposed to travel over a forming board which has a leading lip which is deflected downwardly with respect to the oncoming jet stream. The lower surface of the jet stream is disposed substantially parallel with the surface of the travelling foraminous wire wire at the point where the stream contacts the wire to minimize turbulence at the point of initial contact of the jet stream on the wire and subsequent spouting of the fibrous stock downstream in the forming zone.

Abstract: A high solids black liquor having the property of reduced turbulent flow/drag comprising a high solids black liquor which contains a few parts per million of a water soluble terpolymer containing the repeating units in the following mole percentages: ##STR1## wherein R is a lower alkyl group from 1-6 carbon atoms, M is H or alkali metal, said terpolymer having a Reduced Specific Viscosity of at least 25.

Abstract: An apparatus for treating cellulose pulp having a consistency above the flowage limit provided with two shafts (1, 2) rotating in the same axial plane and each carrying working disks (8) the cylinders of rotation of which are in mutually intermeshing engagement in a working zone and which are driven within a housing (3) which conforms to the common cylinder-of-rotation space of the disks carried by the shafts and is provided with a pulp inlet (4) and a pulp outlet (5). The working disks are constituted of a number of radially directed disks in mutually co-operative positions for working of the pulp between opposed disk surfaces (11, 12), the pulp being fed from the inlet to the outlet with the aid of mutually co-operating feeding screw threads (9) carried by the shafts.

Abstract: An apparatus for treating cellulose pulp having a consistency above the flowage limit, provided with two shafts (1, 2) rotating in the same axial plane and each carrying working disks (8) the cylinders of rotation of which are in mutually intermeshing engagement in a working zone and which are driven within a housing (3) which conforms to the common cylinder-of-rotation space of the disks carried by the shafts and is provided with a pulp inlet (4) and a pulp outlet (5). The working disks on the shafts (1, 2) are constituted of a number of radially directed disks (8) in mutually cooperative positions between the pulp inlet (4) and the pulp outlet (5) for working of the pulp between the opposed surfaces (11, 12) of mutually intermeshing disks (8) the pulp being moved from the inlet (4) to the outlet (5) by members positioned asymmetrically in relation to such opposed surfaces (11, 12) carried by the housing (3) or the disks (8).

Abstract: A profile bar for a discharge opening of a head box of a paper machine, by means of which the profile of the discharge jet from the paper machine is controlled. The profile bar may be connected to adjustment spindles, by means of which the profile bar can be bent in a plane transverse to a direction of flow of the discharge jet. Bending stiffness of the profile bar in the direction of bending to be achieved by means of the adjustment spindles, is arranged to be substantially lower within areas facing the adjustment spindles than at a middle of an area between the adjustment spindles. Transverse sawings or recesses may be made into the profile bar with a spacing substantially denser than the spacing between the adjustment spindles or equivalent. Alternatively, the profile bar may be provided with projections to which the adjustment spindles are attached, with the height of the projections being greater than a maximum height of the profile bar in the space between the projections.

Abstract: A coater and a method of operating such coater is disclosed. The method of operating the coater includes the steps of separating a first tail from a full width web unwound from an unwind stand at threading velocity and threading the first tail at the threading velocity through a pull stack. The first tail is widened to the full width of the web so that a full width web extends through the pull stack. The full width web emerging from the pull stack is dumped into a first broke chute which is disposed below the pull stack. The full width web extending through the pull stack is accelerated along with a coating apparatus to coating velocity so that both the full width web and the coating apparatus attain coating velocity. A second tail is cut in the full width web between the unwind stand and the pull stack and such second tail is threaded through the coating apparatus while the second tail is moving at coating velocity.