Paper and process for manufacturing paper using microfibrillated cellulose between the layers thereof
AssigneeKlabin S.A.
InventorsRenato Augusto PEREIRA DAMÁSIO, Marcelo COELHO DOS SANTOS MUGUET SOARES
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Abstract
The present invention relates to a multilaminar paper containing cellulosic fibers and to a process for making the same, comprising bonding different layers of such paper with the addition of 0.5 to 1.5 g/m2 of microfibrillated cellulose (MFC) with a preferred mean diameter of less than 250 nanometers, generating a paper where starch has been completely replaced and with a final grammage ranging from 60 to 440 g/m2 and with improved mechanical strength properties using smaller amounts of raw material.
Claims9
-7. (canceled)
Multilayer paper containing cellulose fibers, comprising 0.5 to 1.5 g/m2 of microfibrillated cellulose fibers among its layers, wherein the paper is paperboard or corrugated paper.
A process for making paper comprising adding 0.5 to 1.5 g/m2 of microfibrillated cellulose fibers among layers of a multilayer paper, so as to replace 100% of other non-cellulosic ligands, with a reduction of 4.2 to 5-fold concentration of the ligand agent.
Dependencies are inferred from the claim text.