Ink composition, oxygen and/or PH indicator and package

A technology of ink composition and indicator, which is applied in the direction of transportation and packaging, packaging, pH value testing, etc. It can solve the problems of poor heat resistance of ink composition and not suitable for packaging, etc., and achieve the effect of cheap components and good functions

Inactive Publication Date: 2008-09-24
VALTION TEKNILLINEN TUTKIMUSKESKUS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A problem with known indicators is that the ink compositions have poor heat resistance, making them less suitable for use, for example, in the packaging of sterilized products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This test investigates the influence of the components of the indicator composition on the discoloration of the indicator at the sterilization temperature (121° C.) and the discoloration of the indicator due to the action of oxygen.

[0046] The test employed indicator compositions A-D according to the invention, which were hand-printed on a PET / PP film (the layer had a wet thickness of 100 microns) by hand brush bar, and indicator composition E, which was printed by hand It was hand-printed on filter paper (wet thickness of this layer was 40 microns) by brush bar. The ink composition was prepared from the components shown in Table 1 by separately mixing the pigment and water, and the pH adjuster and water in a bottle. Finally, the pigment solution, pH adjuster, binder and in some cases moisture adjuster are mixed with each other. After sufficient drying of the printed indicator mixture, a coating layer (KRUMBHAAR K1717) was hand printed on some of the indicators, allo...

Embodiment 2

[0054] This test investigates the discoloration of the indicator due to the action of alkali treatment and the discoloration of the indicator due to the action of oxygen.

[0055] The test employed a composition C as indicated in Table 1 of Example 1, which was hand printed on a PP film (wet thickness of the layer was 100 microns) by means of a hand squeegee bar. The ink composition was prepared as shown in Example 1. After sufficient drying of the printed indicator mixture, a coating layer (ketone resin KRUMBHAAR K1717, isobutanol 200 g / l, 40 microns) was hand printed on the indicator.

[0056] A sheet of uniform size (2cm x 2cm) was cut out from the produced indicator film for checking the functionality of the indicator and was attached to a package (Opalen HB65, size 14.5cm x 17cm) using adhesive tape ) on the inner wall. Additionally, an oxygen absorber (Ageless SS50) and a roll of cotton were added to the package, and the roll was moistened with 500 microliters of 5% aq...

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PUM

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Abstract

The invention concerns an ink composition comprising an oxidizing and reducing agent and / or pH colorant as the dye, polymeric material as the binder, as well as a pH adjuster and volatile solvent. Further, the invention concerns a method for manufacturing an oxygen and / or pH indicator, in which the ink composition is printed and reduced, or reduced using a volatile reducer and printed; an oxygen and / or pH indicator manufactured by the method, as well as a package for stating a leakage, a change caused by oxygen content and / or deterioration of a product.

Description

field of invention [0001] The present invention relates to an ink composition, a method for preparing an oxygen and / or pH indicator, an oxygen and / or pH indicator prepared by the method, and a method for stating a leak, a change in the oxygen content of a package, or Packaging in which the product has spoiled. Background of the invention [0002] It is known to detect leaks, changes in the oxygen content of the package or deterioration of the product therein using indicators that change color to indicate a change in the state of the package. It is known in the prior art to use various indicators in packaging, indicating a color change, which react as a result of oxygen entering the packaging or a change in pH. For example, document FI94802 describes various leak indicators for packaging. [0003] Document US4526752 discloses an oxygen indicator that functions in an anaerobic environment and comprises a substrate with a reducing agent-free dye in the colorless state and rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/22C09DG01N21/78
CPCY10T428/24851G01N21/783G01N31/225Y10T428/2486G01N31/221Y10T428/1352B65D79/02G01N33/02G01N33/15
Inventor E·赫米T·拉加玛齐
Owner VALTION TEKNILLINEN TUTKIMUSKESKUS
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