Patents Assigned to Copamex, S.A. de C.V.
  • Paper based on recycled papers and process for producing thereof
    Patent number: 8349133
    Abstract: A paper includes a composition of 10% by weight to 40% by weight of recovered post-consumer paper, 60% by weight to 90% by weight of recovered white paper, 0.38% by weight to 0.45% by weight of one or more sizing agents, and 3.33% by weight to 3.95% by weight of one or more binding agents.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: January 8, 2013
    Assignee: Copamex, S.A. de C.V
    Inventors: Eduardo Duarte Villa, José Trinidad Peregrina Gomez
  • Paper based on recycled papers and process for producing thereof
    Patent number: 8157958
    Abstract: A paper produced according to this invention presents a composition of 10% by weight to 40% by weight of recovered post-consumer paper; 60% by weight to 90% by weight of recovered white paper; 0.38% by weight to 0.45% by weight of one or more sizing agents, and 3.33% by weight to 3.95% by weight of one or more binding agents. The method for producing paper that comprises the steps of forming a paper pulp from a mixture of 10% by weight to 40% by weight of recovered post-consumer paper, 60% by weight 90% by weight of recovered white paper, and 0.38% by weight to 0.45% by weight of one or more binding agents; reacting the pulp mixture with 0.38% by weight to 0.45% of one or more of sizing agents, and 0.75% by weight to 0.9% by weight of one or more binding agents; forming and drying a continuous sheet of paper from the pulp mixture, and reacting the continuous sheet of paper with 2.2% by weight to 2.6% by weight of one or more binding agents.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: April 17, 2012
    Assignee: Copamex, S.A. de C.V.
    Inventors: Eduardo Duarte Villa, José Trinidad Peregrina Gomez
  • HEAT, GREASE, AND CRACKING RESISTANT RELEASE PAPER AND PROCESS FOR PRODUCING THE SAME
    Publication number: 20100059191
    Abstract: A heat, grease, and cracking resistance release paper, said release paper is composed by 55% to 68% by weight of cellulose fiber, 3% to 6% by weight of one or more sizing agents, 27% to 37% by weight of one or more fillers, and 1% to 3% by weight of one or more binding agents.
    Type: Application
    Filed: September 10, 2009
    Publication date: March 11, 2010
    Applicant: Copamex, S.A. De C.V.
    Inventors: ESTEBAN GARCIA MELGAREJO, FABIOLA RODRIGUEZ MATA