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Method for measuring migration amount of harmful substances in printing ink

A technology of harmful substances and migration amount, which is applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of not fully representing the migration of harmful components, not suitable for printing samples to be tested, time-consuming and laborious printing, etc., to achieve low cost , The effect of small deviation of harmful ingredients and high flexibility

Inactive Publication Date: 2012-07-04
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing experiments on the migration of harmful ingredients in paper packaging inks are not based on real inks, but only use simulated inks or only use harmful ingredients in inks (Huang Xiuling, Wang Zhiwei. Migration of UV ink photoinitiators in PE coated paper to food simulants Behavior [J]. Polymer Materials Science and Engineering, 2009, 25(7): 4.; WANG Z-W, HUANG X-L, HU C-Y. A Systematic Study on the Stability of UV Ink Photoinitiators in Food Simulants Using GC[J]. PACKAGING TECHNOLOGY AND SCIENCE, 2009, 22(3): 151-159.; AN DJ, KIM YU, CHOI SH, et al.Compositional and structural effects on migration behavior of printing ink solvents on lab-made cookies[J].Food Science and Biotechnology, 2004, 13(6): 707-711.; JOHNS SM, JICKELLS SM, READ WA, et al. Studies on functional barriers to migration. 3. Migration of benzophenone and model ink components from cartonboard to food during frozen storage and microwave heating[J].PACKAGING TECHNOLOGY AND SCIENCE, 2000,13(3):99-104.; NERIN C, CACHO J, GANCEDO P.Plasticizers from printing inks in a selection of food packagings and their migration to food[ J]. Food Additives and Contaminants, 1993, 10(4): 453-460.), cannot fully represent the migration of harmful ingredients in real inks
In addition, the traditional printing method is time-consuming, labor-intensive and expensive, and is not suitable for printing test samples for migration experiments; IGT offset printing suitability tester is mainly used for printing color bars to examine ink color, density, coverage, and abrasion resistance Determination of physical properties of inks such as durability, scratch resistance, flexibility, adhesion and gloss, ink transfer rate, light resistance and chemical resistance, and there is no report on its use in migration experiments

Method used

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  • Method for measuring migration amount of harmful substances in printing ink
  • Method for measuring migration amount of harmful substances in printing ink
  • Method for measuring migration amount of harmful substances in printing ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The migration and detection of the plasticizer DBP in the ink to the milk powder includes the following steps:

[0024] (1) Sample preparation

[0025] Accurately weigh 0.25g of each of the four-color inks, add 0.1mL of DBP standard substance, stir and mix thoroughly, and print on 240g / m 2 On the coated surface of white cardboard, after the newly printed paper sample is dried naturally for 10 days, the uniform part of the ink strip is cut into 4×1cm samples for future use (such as figure 1 shown). In order to exclude the influence of printing factors on the concentration and uniformity of the plasticizer in the proofs, the proofs printed in the same batch are only used for the determination and migration of the initial concentration of the plasticizer at the same temperature.

[0026] (2) Migration test

[0027] Weigh 0.5g of milk powder and evenly cover the unprinted surface of the sample sheet (such as figure 2 shown), and then put the sample in a closed glass co...

Embodiment 2

[0045]The migration and detection of the plasticizer ATBC in the ink to the food simulant Tenax includes the following steps:

[0046] (1) Sample preparation

[0047] Accurately weigh 0.25g of each of the four-color inks, add 0.1mL of ATBC standard substance, stir and mix thoroughly, and print on 400g / m2 with a pressure of 300N using a C1 offset printing suitability tester 2 On the coated surface of white cardboard, the newly printed paper sample is naturally dried for 10 days, and the uniform part of the ink strip is cut into 4×1cm samples for later use. In order to exclude the influence of printing factors on the concentration and uniformity of the plasticizer in the proofs, the proofs printed in the same batch are only used for the determination and migration of the initial concentration of the plasticizer at the same temperature.

[0048] (2) Migration test

[0049] Weigh 0.16g of food simulant Tenax (International Laboratory Company, USA) to evenly cover the unprinted s...

Embodiment 3

[0057] Migration and detection of plasticizers DEHP and DOP in ink to food simulant Tenax, including the following steps:

[0058] (1) Sample preparation

[0059] Accurately weigh 0.25g of each of the four-color inks, add 0.02mL of DEHP standard product and 0.04mL of DOP standard product, stir and mix thoroughly, and print on the coated surface of white cardboard with a pressure of 1000N with a C1 offset printing suitability tester. After the prepared paper sample was dried naturally for 10 days, the uniform part of the ink strip was cut into 4×1cm samples for later use. In order to exclude the influence of printing factors on the concentration and uniformity of the plasticizer in the proofs, the proofs printed in the same batch are only used for the determination and migration of the initial concentration of the plasticizer at the same temperature.

[0060] (2) Migration test

[0061] Weigh 0.16g of food simulant Tenax to evenly cover the unprinted surface of the sample she...

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Abstract

The invention discloses a method for measuring the migration amount of harmful substances in printing ink. The method comprises the following steps of: weighing the printing ink, adding the harmful substances, and mixing for later use; adding the printing ink into an offset print printability tester, then printing paper samples; weighing solid foods or food simulants, uniformly covering on unprinted surfaces of sample pages, then placing the sample pages in sealed glassware, and setting different time under a certain temperature for migration; and performing quantitative and qualitative analysis on the harmful substances on the migrated foods or food simulants by a gas chromatography instrument or a gas chromatography-mass spectrometry or a liquid chromatography instrument or a gas chromatography flame ionization detector. Compared with the traditional printing method, the method disclosed by the invention is low in cost, and the content deviation of harmful substances in different sample pages in the same printing conditions is smaller; sample pages to be measured are applied to a migration test, and relative standard deviation of parallel samples in migration results is also smaller than plus or minus 15%; and the method disclosed by the invention is used for manufacturing the sample pages to be measured by using the real printing ink and is capable of measuring the migration situation of the harmful ingredients in the real printing ink.

Description

technical field [0001] The invention relates to a method for measuring the migration amount of harmful substances in ink. Background technique [0002] Toxic and harmful substances in packaging surface printing inks will migrate through packaging materials into the food inside, thus endangering human health. [0003] So far, there has been no research on the migration kinetics of harmful substances in real inks for paper packaging. Existing experiments on the migration of harmful ingredients in paper packaging inks are not based on real inks, but only use simulated inks or only use harmful ingredients in inks (Huang Xiuling, Wang Zhiwei. Migration of UV ink photoinitiators in PE coated paper to food simulants Behavior [J]. Polymer Materials Science and Engineering, 2009, 25(7): 4.; WANG Z-W, HUANG X-L, HU C-Y. A Systematic Study on the Stability of UV Ink Photoinitiators in Food Simulants Using GC[J]. PACKAGING TECHNOLOGY AND SCIENCE, 2009, 22(3): 151-159.; AN DJ, KIM YU, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 胡长鹰高松王志伟
Owner JINAN UNIVERSITY
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