Abstract: This invention relates to a method for treating chemical paper pulp comprising a step of treating the pulp with ozone followed by a step of alkaline extraction, in which alkaline extraction takes place in the presence of magnesium ions (Mg2+).
Type:
Grant
Filed:
June 13, 2014
Date of Patent:
June 26, 2018
Assignees:
L'Air Liquide Societe Anonyme Pour L'Etude et L'Exploitation Des Procedes Georges Claude, Association de Gestion De L'Ecole Francaise de Papeterie et des Industries Graphiques (AGEFPI), Degremont France, Xylem Water Solutions Herford GmbH, Arkema France
Abstract: This invention relates to a method for treating chemical paper pulp comprising a step of treating the pulp with ozone followed by a step of alkaline extraction, in which alkaline extraction takes place in the presence of magnesium ions (Mg2+).
Type:
Application
Filed:
June 13, 2014
Publication date:
May 12, 2016
Applicants:
L'Air Liquid Societe Anonyme pour L'Etude et Explo itation des Procedes Georges Claude, Association de Gestion de L'Ecole Francaise de Papeterie et des Industries Graphiques (AGEFPI), Degremont France, Xylem Water Solutions Herford GmbH, Arkema France
Abstract: The present invention relates to a compression test device for a paper strip, including means for laterally holding the strip to limit its buckling during the testing. The lateral holding means include a tube in which the strip is freely rolled with more than one turn.
Abstract: A method is provided for controlling a water-ink equilibrium on a moving offset plate 2 in an offset copying machine wherein the offset plate is fixed to a rotating cylinder 1. The method includes the step of illuminating a predetermined area 35 of the moving offset plate 2, the density of which is known, with a coherent light source 30 under normal incidence. A portion of the light reflected around an axis perpendicular to the plane of the illuminated area 35 is collected in the focal plane of a convergent optical system 32. The intensity of the collected light is measured at at least one location in the focal plane of the convergent optical system.
Type:
Grant
Filed:
November 27, 1991
Date of Patent:
September 28, 1993
Assignee:
Association de Gestion de l'Ecole Francaise de Papeterie et de l'Imprimerie
Abstract: A coupling device comprises a non-magnetic female part (1) comprising an aperture ending in a coupling surface of the part and a magnet (7) accommodated in a recess in an offset position with respect to the coupling aperture; and a male part (3) comprising a portion with a circular section (11) made of a ferromagnetic material, the diameter of which is higher than the smallest size of the aperture, and intended to be drawn by the magnet against the coupling surface while being centered in the aperture. This device can be used in an apparatus for suspending any of several objects to a support.
Type:
Grant
Filed:
April 9, 1992
Date of Patent:
June 8, 1993
Assignee:
Association de Gestion de l'Ecole Francaise de Papetiere et de l'Imprimerie
Abstract: A device for determining the characteristics of particles in suspension in a liquid, comprising a sampling device (2) for injecting samples of particles; a fractionator (3) for sorting those particles as a function of their length; an optical measurement cell (4) which receives the output of the fractionator, and a programmable controller (6) for calculating the values of the intensities and combinations of those values in the various directions of the optical radiation. The optical measurement cell includes a laser for transmitting polarized, coherent light through the particles in suspension and for collecting the light diffracted in various directions.
Type:
Grant
Filed:
April 11, 1990
Date of Patent:
February 11, 1992
Assignee:
Association de Gestion de l'Ecole Francaise de Papeterie et de l'Imprimerie