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Leider Philip J, Rihs Jorg: Open discharge pulp refiner. Westvaco Corporation, Marcontell W Allen, Schmalz R L, October 7, 1975: US3910511 (29 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 ...


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Hans U Huth, Walter Kamutzki: Neutral sizing agent for base paper stuff with the use of cationic plastics dispersions. Hoechst Aktiengesellschaft, Bierman and Muserlian, May 21, 1996: US05518585 (29 worldwide citation)

Neutral sizing of base paper pulp in a conventional aqueous suspension at a neutral pH for the production of sized, acid-free base paper by internal sizing with the use of aqueous cationic copolymer dispersions having a minimum cation activity of 20 .mu.mol/g of solids, more than half of the cationi ...


43
Milos Krofta: Apparatus for deinking waste paper pulp. Lenox Institute for Research, Edward T Connors, June 12, 1979: US04157952 (29 worldwide citation)

Apparatus for de-inking waste paper pulp using a foam flotation process in which the deinked slurry is to be recycled for the production of paper. The old paper is pulped (slushed), mixed with water and flotation- and other chemicals, to produce a slurry which is introduced into the flotation tank. ...


44
Kaule Wittich, Stenzel Gerhard, Schwenk Gerhard: Security paper and method for its manufacture.. Gao Ges Automation, December 15, 1982: EP0066854-A1 (29 worldwide citation)

1. A security paper having threads or fibers embedded in the paper pulp and made of cellulose acetate containing a luminescent substance in even distribution, characterized in that the luminescent substance is a lanthanide chelate showing narrow-band luminescence.


45
Louis O Torregrossa: Method of chemically reacting a slurry with a gas. Kamyr, Nixon & Vanderhye, December 5, 1995: US05472567 (29 worldwide citation)

A number of different, efficient treatments of slurries and liquid with gas can be provided. A slurry or liquid is introduced into a first end of a vortex. A gas--such as a chemically reactive gas--is introduced from exteriorly of the vortex into contact with the slurry or liquid in the vortex, so t ...


46
Risto A Ljokkoi: Method and apparatus for treating fiber suspension. A Ahlstrom Corporation, Nixon & Vanderhye, March 19, 1991: US05000842 (28 worldwide citation)

Fiber suspension, such as paper pulp flowing to the headbox of a paper machine, is acted upon by apparatus which affects the axial direction and magnitude of the speed of the fiber suspension during screening to optimize results. A rotor cooperates with a screen cylinder, the rotor having a pluralit ...


47
Byron Jenkins: Foam coating of paper employing a hydrolyzed protein foaming agent. Finnegan Henderson Farabow & Garrett, January 22, 1980: US04184914 (28 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 ...


48
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 (28 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 ...


49
Pierre Berger, Christian DE Choudens, Gerard Lombardo, Pierre Monzie: Method and apparatus for grinding chips into paper pulp. Haseltine Lake & Waters, May 9, 1978: US04088528 (28 worldwide citation)

In the continuous production of paper pulp from ligno-cellulose raw material, the raw material is subjected to grinding and/or delignification by passing it in the form of small pieces between interpenetrating helicoidal surfaces driven synchronously in rotation inside a casing. The pitch of the hel ...


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