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Surface treatment composition and paper or paperboard comprising a surface treatment composition

A technology of surface treatment and composition, which is applied in the field of surface treatment composition and can solve problems such as colloid flocculation and precipitation

Active Publication Date: 2013-06-12
STORA ENSO OYJ
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high levels of electrolytes can lead to gel flocculation and precipitation

Method used

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Examples

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Embodiment Construction

[0023] The surface treatment composition of the present invention comprises starch particles encapsulating at least one salt. The salt can be said to be embedded in the starch particles. The use of such particles in surface treatment compositions improves the printing properties of dye-based and pigment-based inks. Furthermore, such compositions reduce the rheological and viscosity problems associated with prior art compositions comprising as high a salt concentration as compositions of the present invention.

[0024] Thus, higher salt concentrations can be used in surface treatment compositions without causing rheological or viscosity problems.

[0025] By adding the surface treatment composition of the present invention to the surface of the paper or board, the salt level on the surface of the paper or board can be increased, while looking at the whole paper or board, the salt level is reduced compared to prior art solutions. This is due to the fact that the surface treatm...

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PUM

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Abstract

The present invention relates to a surface treatment composition for paper, paperboard or other fibrous webs wherein the composition comprises starch particles that comprise at least one salt. The invention further relates to a paper or paperboard being surface treated with said composition.

Description

technical field [0001] The present invention relates to a surface treatment composition comprising starch particles intended for the coating or surface sizing of paper, board or other fibrous webs. The invention also relates to paper or board comprising said composition. Background technique [0002] A major part of all paper and board used in copiers, laser printers, inkjet printers and other different printing methods such as offset printing and flexoprinting is surfaced with some kind of composition Treatment to improve the printability and other properties of paper or board. The composition is often a surface sizing composition or a coating color. [0003] A surface treatment composition is called a surface size if the composition mainly comprises starch in dissolved form. If the composition contains some kind of pigment in the form of solid particles, the composition is called a coloring composition or a coating colorant. [0004] Surface sizing compositions consist...

Claims

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Application Information

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IPC IPC(8): D21H19/54D21H17/28D21H17/66D21H21/16D21H21/54
CPCB41M5/0017B41M5/5218B41M5/5236D21H17/28D21H17/66D21H19/54D21H21/16D21H21/54
Inventor P.哈坎森K.贝克福克
Owner STORA ENSO OYJ