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A coated substrate, a process for production of a coated substrate, a package and a dispersion coating

A dispersion, coating technology, applied in coating, transportation and packaging, without pigment coating, etc., can solve problems such as reducing bending resistance

Inactive Publication Date: 2012-09-26
STORA ENSO OYJ
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been demonstrated that dispersion coatings will reduce the bending resistance of the coated fiber-based product and, therefore, will be problematic during folding of the product to form a package

Method used

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  • A coated substrate, a process for production of a coated substrate, a package and a dispersion coating

Examples

Experimental program
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Effect test

Embodiment

[0042] Use uncoated cardboard as the substrate. The substrates had an areal weight of 210 gsm and a Bendtsen roughness level of 400-500 ml / min.

[0043] The substrates were coated with a commercially available dispersion paint dispersion called Cartaseal TXU manufactured by Clariant (UK), which is a latex based aqueous dispersion. The dispersion was used as a reference, hereinafter referred to as "reference sample", and by mixing microfibrillated cellulose with the dispersion, hereinafter referred to as "sample MFC". MFC was metered into the dispersion for the sample MFC until the Brookfield viscosity was about 1000 mPas.

[0044] Uncoated paperboard was coated by means of a rod coating unit dispersion on the sheet. The weight of the dispersion coating on both samples was 15 gsm.

[0045] The sheet is then dried.

[0046] Microfibrillated cellulose is manufactured in high consistency from bleached pine sulfite pulp. The bleached pulp was firstly pre-mechanically treated i...

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Abstract

The present invention relates to a coated fiber based substrate comprising a dispersion coating wherein said dispersion coating comprises microfibrillated cellulose and colloidal particles of a polymer. The invention further relates to a package formed from said substrate, a dispersion coating and process for the production of mentioned substrate.

Description

technical field [0001] The present invention relates to coated substrates and methods of making coated fiber-based substrates, wherein the coating comprises microfibrillated cellulose. Background technique [0002] Fiber-based products used as packaging such as liquid packaging or food packaging must be able to withstand the impact of packaging items, such as the impact of liquid and / or food on the fiber-based product. One way is to provide the fiber-based product with a barrier, such as a water or grease resistant barrier, which makes the fiber-based product more resistant to liquids and / or grease. [0003] Barrier layers are typically formed by coating a fiber-based substrate with a composition that imparts barrier properties to the substrate. Depending on the desired properties of the barrier layer, different coatings can be applied. When forming barrier layers on fiber-based products, the most commonly used materials are polyethylene (PE), polypropylene (PP), polyethyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/34C09D101/02C08L1/02
CPCC09D101/02D21H19/10D21H19/12D21H11/18D21H19/34C08L2205/16C08L27/06C08L29/04C08L29/06C08L33/08C08L25/06C08L23/20C08L33/20C08L33/10C08L1/10C08L3/08C08L31/04C08L97/00C08L5/00Y10T428/1362Y10T428/249921B82Y30/00C08L1/02D21H23/28
Inventor I.海斯卡南K.巴克福克L.阿克斯鲁普
Owner STORA ENSO OYJ
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