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What are the subjects of ink testing for food, pharmaceutical and other packaging?

Abstract: 本文概述了食品、药品和其他包装油墨测试的主要科目。测试包括油墨配方的表征和杂质分析，如NMR核磁共振光谱、质谱、液相色谱-串联质谱等。高分辨率显微镜技术如透射电子显微镜和扫描电子显微镜用于评估颜料系统和涂层表面。复杂数据处理解决方案用于分析油墨性能的统计数据，聚合物物质和痕量重金属的检测方法包括凝胶渗透色谱法和ICP-AES。还涉及对油墨污染的法医调查以及UV固化技术的研究，包括UV-Cure油墨的配方分析和热解气相色谱-质谱鉴定。

1. Ink and coating product formulation characterization and impurity structure analysis

  • NMR Nuclear Magnetic Resonance Spectroscopy, Mass Spectrometry (MS), Tandem Mass Spectrometry (MS/MS), Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS), Vibrational Spectroscopy, UV-Vis, Fluorescence, Viscosity, Headspace Gas Chromatography

2. High Resolution Microscopy

  • Particulate Pigment Systems Using Transmission Electron Microscopy (TEM)

  • Compatibility of printing technologies, such as printheads and inks using a scanning electron microscope (SEM)

  • Coated surfaces and multilayer systems (SEM, TEM, scanning probe microscopy (SPM) and interferometers)

3. Advanced data processing solutions that require data processing and interpretation

  • Statistical Measurement of Ink Batch Performance Variations

  • This is especially useful when understanding print attribute data (optical density, L*a*b* color space, etc.)

4. Working with polymeric substances and providing analytical support for a variety of chemicals including acrylated polyurethanes, epoxies, polyesters and acrylics (gel permeation chromatography, pyrolysis gas chromatography, etc.)

5. Trace heavy metals and residual inorganic impurities ash/inductively coupled plasma spectroscopy and optical emission spectroscopy or mass spectrometry detection (ICP-AES or ICP-MS) in the product formulation

What are the subjects of ink testing for food, drug and other packaging? Picture 1

6. Determination of physical and chemical properties of formula ingredients (pKa, LogP, LogD, solubility, etc.)

7. Forensic investigation of ink contamination during manufacturing (e.g. plasticizer absorbed from hose, etc.)

8. UV curing technology:

  • UV-Cure ink formulation characterization and impurity structure elucidation, including properties and interactions of monomers, photoinitiators, pigments, additives and oligomers

  • DSC Differential Scanning Calorimetry (DSC) is used to study complex thermal properties at different degrees of cure as an indicator of the degree of crosslinking

  • FTIR Infrared Spectroscopy for Quantification and Monitoring of Residual Functional Groups

9. Pyrolysis Gas Chromatography-Mass Spectrometry (GC-MS) Identification of Polymer Components in Aqueous Ink Dispersions


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