41
Thomas H Fry: Solid waste processing. Christie Parker & Hale, November 19, 1985: US04553977 (28 worldwide citation)

Solid waste is separated by a first trommel screen into substantially intact aluminum cans and an organics-rich fraction from which recyclable fiber products may be separated. Organics are at least in part isolated for use as a fuel with or without pulping. The aluminum cans are separated from inorg ...


42
Byron Jenkins: Foam coating of paper employing a hydrolyzed protein foaming agent. Finnegan Henderson Farabow & Garrett, January 22, 1980: US04184914 (27 worldwide citation)

A method of reducing the number or amount of chemical additives normally incorporated into paper pulp furnish before transferring the latter to the continuous wire mesh of a papermaking machine in the manufacture of paper sheet involves the use of a hydrolyzed proteinaceous foam which does not appre ...


43
Ake Backlund: Method for control of chemicals during gas treatment of suspensions. Kamyr, Cushman Darby & Cushman, December 6, 1983: US04419184 (27 worldwide citation)

A method of treating medium consistency paper pulp or the like with a treament gas, such as oxygen, is provided to achieve uniform treatment results. The treatment gas is added to the pulp in finely distributed small bubbles, and the density of the suspension is measured at at least one moment, or t ...


44
Leider Philip J, Rihs Jorg: Open discharge pulp refiner. Westvaco Corporation, Marcontell W Allen, Schmalz R L, October 7, 1975: US3910511 (27 worldwide citation)

Open discharge, low consistency, paper pulp refiners are provided with refining plates having a pumping or positive beater bar angle to the plate radius of from 5.degree. to 25.degree., feed grooves in the face of at least one of a plate pair being plugged at the outer plate periphery and the width ...


45
Jean P J Lamort: Apparatus for the purification of paper pulp. E et M Lamort, Darby & Darby, April 29, 1980: US04200537 (27 worldwide citation)

An apparatus for purifying paper pulp in the liquid state by screening. The apparatus comprising a cylindrical fixed screen disposed coaxially with a rotor within a housing. The rotor has longitudinal blades which, in section transverse to the rotor axis, have the general shape of an angle one side ...


46
Fibre-reinforced articles. Cape Boards & Panels, December 20, 1978: GB1536663-A (27 worldwide citation)

1536663 Fibrous reinforced gypsum board CAPE BOARDS & PANELS Ltd 28 Oct 1975 [28 Oct 1974] 46451/74 Heading C3N [Also in Division D2] A board is made from a composition comprising gypsum plaster, fibrous mineral reinforcement and 1-25% by weight, based on the solids content of the composition of a c ...


47
Masaaki Otoguro: Process for the manufacture of pulp contained particles for the treatment of excrement. Wenderoth Lind & Ponack, December 15, 1981: US04305345 (26 worldwide citation)

A process for the manufacture of paper pulp containing particles for the treatment of excrement of primarily domestic animals and pets. Hot water and a filler are added to a paper pulp in solidified condition and they are agitated so as to form a slurry of the paper pulp. The slurry is subjected to ...


48
Stromberg Bertil, Jiang Jian, Laakso Richard, Phillips Joseph, Greenwood Brian, Prough James: Extended kraft cooking with white liquor added to wash circulation.. Kamyr, March 25, 1992: EP0476230-A2 (26 worldwide citation)

In the continuous kraft pulping of comminuted cellulosic fibrous material (e.g. wood chips) to produce paper pulp, viscosity for a given Kappa Number is significantly increased (e.g. at least about 20%) by adding kraft white liquor to the wash recirculation loop (38-40) in a continuous digester (19) ...


49
William R Shields, Kapil M Singh, James F Suska, Jody MacDonald: Measurement of paper pulp and fiber visual characteristics. International Paper Company, Luedeka Neely & Graham P C, July 28, 1998: US05786894 (25 worldwide citation)

A system for determining characteristics of objects in wood pulp includes a pulp sampling and dilution system for diluting and dispersing samples of pulp, and an imaging/analysis system for capturing images of pulp objects, including fibers, and analyzing the captured images. Samples of pulp are pro ...


50
Martin O Saltarelli: Refiner head assembly and refining disk therefor. Beloit Corporation, Dirk J Veneman, Michael L Gill, Gerald A Mathews, July 19, 1977: US04036443 (25 worldwide citation)

A refiner head assembly of the type suitable for use in disk refiners, such as those employed in paper pulp processing. The assembly includes a backing head and a refining disk. The disk mounts reversibly between a pair of radially spaced, circumferentially extending flanges upstanding from one face ...



Click the thumbnails below to visualize the patent trend.