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Oxygen barrier for packaging applications

A use, dispersion technology, applied in the direction of wrapping paper, transportation and packaging, hemicellulose coating, etc., can solve the problems that did not mention the influence of clay on permeability and/or mechanical properties

Inactive Publication Date: 2014-03-19
KTH HLDG AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through this study aimed at investigating the effect of glycerol on the interaction, the study did not address the effect of clay on permeability and / or mechanical properties

Method used

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  • Oxygen barrier for packaging applications

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Embodiment Construction

[0092] Materials and methods

[0093] Preparation of xyloglucan-MMT (XG / MMT) nanocomposite membranes: Prepare 1% MMT (Cloisite Na+, density 2.86 g / cc, Southern Clay Products, Inc.) solution at ambient temperature by using Ultra Turrax stirrer (IKA, DI25Basic) was stirred at 25000 rpm for 15 minutes, followed by sonication at 37% amplitude using a Vibra-Cell (Sonics & Materials, Inc.) ultrasonic processor. This was repeated several times and the resulting solution was left undisturbed for 3 days to remove any clay lumps. Industrially available xyloglucan (weight average molecular weight, 2.5 MDa, Innovassynth technologies Ltd., India) was purified by centrifugation (4000 rpm, 45 minutes) and freeze-dried to obtain pure xyloglucan. 1.0, 2.0, 5.0, 10.0 and 20.0% (w / w) clay dispersants were added to the corresponding XG solutions and mixed using an Ultra thorax at 13500 rpm for 15 min and kept under magnetic stirring overnight. The resulting solution was centrifuged at 4000 rpm ...

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Abstract

The present invention relates to composite material of xyloglucan and clay for use as a coating material. The invention also relates to a method of producing the coating.

Description

technical field [0001] The present invention relates to a barrier for packaging applications and a method of applying the barrier. Background technique [0002] The ingress of oxygen through food packaging is a major cause of food spoilage due to the oxidation of fats and oils and the growth of aerobic microorganisms and molds in the presence of oxygen. 1 To extend the shelf life of food, packaging materials that balance barrier properties and suitability for packaging shape and structure are required. This balance is usually not achieved by using a single packaging material. Commonly used food packaging structures are usually composed of several layers to meet different needs such as mechanical strength, gas and aroma barrier properties, thermal stability, adhesiveness and cost efficiency. In many cases, the barrier layer is the most critical and accounts for the highest share of the total cost. The traditional barrier layer is aluminum foil, whose obvious disadvantages ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D105/14C08K3/34D21H19/52C08J7/043C08J7/048
CPCD21H21/10D21H27/10C08J5/18C09D105/00C08J7/047C09D105/14D21H19/40D21H19/52D21H21/14C08J2405/00C08J2367/00C08J7/04Y10T428/2933Y10T428/249921C08J7/0427C08J7/048C08J7/043C08K3/34
Inventor L·博格朗德周琪J·J·考库马拉伊尔
Owner KTH HLDG AG
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