Paperboard containing microplatelet cellulose particles

Abstract

A paperboard containing microplatelet cellulose particles has improved surface smoothness, aesthetic properties, bending stiffness and strength performance. When microplatelet cellulose particles are used for surface treatment of the paperboard, the microplatelets fill voids between fibers on the board surface. As a result, treated board has enhanced strength and surface properties such as smoothness, opacity, coating hold-out, and printability without compromising bending stiffness. Furthermore, the present disclosure relates to a process for improving board strength, surface smoothness and / or bending stiffness without the needs for densification, while maintaining other desired performances.

Description

[0001] This non-provisional application is based on the filing date of U.S. Provisional Application Serial No. 60 / 825,311 filed September 12, 2006, which is hereby incorporated by reference, has been filed within 12 months of its filing date, and has been filed under 35 USC §1.19(e) claims its priority. Background technique [0001] The papermaking process generally involves passing a dilute aqueous slurry of cellulosic fibers obtained from a headbox onto a moving screen, known as a Fourdrinier wire, through which the slurry is drained so that a fully formed The cured fibrous mat is then extruded using a size press in which a substantial amount of water remaining in the mat is removed by roll nip extrusion, and finally the resulting mat is passed through the drying section of the paper machine to make the remaining moisture thermodynamically to remove. [0002] Paper-based products such as paper and board are often coated to improve their surface properties. Coating of paper...

AI Technical Summary

Problems solved by technology

For example, calendering improves the surface smoothness of paperboard at the expense of bending stiffness and strength.

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