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Invisible and indispensable – protective Shield against Charging

Invisible and indispensable – protective shield against electrostatic charge

Iriotec® 7100 pigments for individual and electrically conductive packaging 
Packaging with an individual design that at the same time protects against electrostatic discharge – functional particles of the Iriotec® 7100 series from EMD Performance Materials combine both properties. They can be incorporated directly into the printing ink, can be used with most of the common printing techniques and permanently discharge developing current.
Learn more about the benefits of the Iriotec® 7100 portfolio for ESD package print:
  • Experience how Iriotec® 7100 pigments function under ESD protection
  • See our complete portfolio and the advantages of the different pigments under Products
  • Read how the pigments unfold their full capacity under Printing Inks.
  • Find out how to obtain the best results under Printing Techniques.
Are you interested in specific information on our Iriotec® 7100 products or technical application advice? Please use the menu on the right to contact us.

No charge – no discharge

Iriotec® 7100 pigments lend permanent electrically conductive properties
Electrostatic charge is almost everywhere. It is caused by friction, for example, while walking across a carpeted floor. But if objects of different charge touch, the charge balance occurs within microseconds.  

This electrostatic discharge (ESD) is often accompanied by a visible spark or audible crackle. On our skin we feel the discharge starting at about 2,000 volts. Electronic components can already be damaged by discharges around 30 volts – and sensitive high-frequency and semiconductor products like microchips and circuit boards can be harmed by less than 5 volts. Since their malfunction often occurs only under peak loads, troubleshooting becomes difficult.

Classification of electrical properties of packaging
To avoid electrostatic discharge not only protective clothing and flooring should be antistatic – also the product packaging for sensitive electronic components should have an effective ESD protection.

The solution: Packaging with Iriotec® 7100 pigments in the printing. The electrical conductive particles help avoid uncontrolled electrostatic discharge: Through conductive pathways in the printing they continuously dissipate any charge that might be built up. Without charge there is no damaging discharge. At the same time the pigments allow almost every imaginable design – due to their translucent properties and the resulting neutrality in color.

Pigments of the Iriotec® 7100 series
  • lend permanent antistatic properties (surface resistance from 104 to 109 ohms)
  • possibly render additional ESD protection bags replaceable if printed on the directly touching or covering packaging for electronic parts 
  • remain inconspicuous in the background due to their light color and transparency – and thus giving an enormous flexibility in color and design
  • can be printed on the inside and outside of the packaging
  • are applicable in almost every common printing technique via inline and offline printing units due to their very small particle size of < 15 μm 
  • exhibit a high chemical stability and are therefore resistant to acids, alkalines, organic solvents, and surfactants

Three electrically conductive variations

Iriotec® 7100 series: The right pigment for every application
Whether your ESD packaging has a very smooth or rather rough surface, or you would like to create a dark or light design – you´ll find the right conductive pigment for your needs in the Iriotec® 7100 portfolio. As different as they all are, it is the tin oxide coating that gives all functional particles of the Iriotec® 7100 series their conductivity.

Iriotec® 7110: For very smooth surfaces and packing exteriors
Iriotec® 7110 is particularly suitable for translucent, very smooth and light-colored coatings. Possible disturbing color impairments are avoided since the pigment is very light in color and appears nearly color neutral owing to its translucent property. 

Iriotec® 7120 and 7130: High conductivity, even at low concentrations
Iriotec® 7120 and Iriotec® 7130 exhibit a very low percolation threshold. Owing to their special construction, the pigments are able to compensate for unevenness on rough surfaces – for better and higher conductivity even at low concentrations.
Article no.NamePackage Size
141185Iriotec® 71101 kg (Sample), 20 kg*
141186Iriotec® 71201 kg (Sample), 20 kg*
141187Iriotec® 71301 kg (Sample), 20 kg*
*Sample sizes also available

Individual ESD print with Iriotec® 7100

Application instruction for flexo, gravure, screen printing and paper coating
Electrically conductive pigments of the Iriotec® 7100 portfolio are as versatile as modern printing techniques themselves – this is because they can be incorporated easily into the printing ink. And: Crucial to the conductivity of the individual decoration is the pigment concentration in the ink, not the thickness of the ink layer.

The functional particles of the 7100 series are especially suitable for flexo, gravure and screen printing as well as paper coating

What applies to any other type of packaging also applies to the production of cardboard boxes with individual ESD print: The parameters of the printing presses must be adjusted so that all printed sheets have a consistent and flawless quality.
individual ESD print with Iriotec® 7100
Flexo printing
The anilox roller/photopolymer plate combination is decisive for correctly transferring printing ink containing Iriotec® 7100 pigments: To achieve the desired bridging between particles, the cell geometry of the anilox roller and the screen widths of the polymer plates must be matched according to the values. 

Gravure printing
The cell structure is also crucial in gravure printing. The cells on the printing cylinder should not only have a sufficient cell volume, they also should be connected with each other. Laser-engraved cylinders are particularly suitable for this. 

Screen printing and coating
The thick layer of these two processes ensures that the pigment particles can adequately interconnect – provided the particle concentration and distribution in the ink are sufficient. Both processes thus ensure good conductivity of the printing ink – and unlike in other printing processes, no further technical requirements must be fulfilled. 
Classification of electrical properties of packaging
Classification of packaging according to DIN EN 61340-5-3
Packaging material is divided into four classes with respect to its electrical properties: conductive, electrostatic shielding, dissipative or insulating. These classes determine how a material must be used with regard to protecting against electrostatic discharge. Before deciding on a packaging, one should therefore check what protection it must offer and whether the selected product meets these requirements. Iriotec® 7100 pigments by EMD Performance Materials will only be effective in the marked areas in the graph on the left.

Ask our experts about which particular printing process best meets the needs of your individual requirements.

For important information on producing conductive printing inks see Printing inks in the menu bar above. For additional information on the individual pigments as well as ordering information go to Products in the menu bar above.

Iriotec® 7100 pigments make printing inks electrically conductive

Easy to disperse in water based, solvent based and UV-curing inks
Iriotec® 7100 pigments from EMD Performance Materials can be used in most conventional printing processes via inline and offline printing units. With their size < 15 μm the particles exhibit an excellent ability to disperse in water based, solvent based and UV-curing inks.

In order for the pigments to unfold all of their capabilities in a printed design, we recommend observing the following tips during ink manufacturing:
  • To maintain the conductive properties, avoid strong shear forces during incorporation and use only standard mixers.
  • For the conductivity of the printed image, a sufficient amount of evenly distributed Iriotec® 7100 pigment particles in the paint itself is crucial, not the thickness of the paint layer.
    o EMD Performance Materials generally recommends a pigment concentration of at least 25 percent by weight of the original ink. Reliable conductivity depends on the unbroken contact between the particles.
    o Good distribution of the particles in the ink is indispensible for their bridging. Inadequate dispersion of the particles causes the formation of agglomerates rather than conductive networks – a reliable dissipation of electrostatic charge becomes impossible.

Sufficient distribution of Iriotec® 7100 pigments in the printing ink results in good networking of conductive pigments in ESD printing. Insufficient distribution in the printing ink results in color agglomerates forming during the ink drying process that are not in contact with each other – the desired conductive effect is not attained.
Sufficient distribution of Iriotec® 7100 pigments in the printing ink results in good networks of conductive pigments in ESD printing. The image shows how insufficient distribution in the printing ink results in the formation of agglomerates during the ink drying process that are not in contact with each other – the desired conductive effect is not attained.

For additional information on the individual pigments as well as ordering information see Products in the menu bar above.