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Natron MG Series pad printing inks for glass - Boston Industrial Solutions, Inc.
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MG Series Pad Printing Ink

Screen Printing Inks, Pad Printing Inks


Pad printing ink for glass—the Natron MG Series is a 2-componet pad and screen printing glass ink. Other materials to print with this ink include ceramics, tiles, metals, aluminum, chrome-plated parts, varnish-coated substrates, thermosetting plastics, and epoxy resins. Additionally, use this ink to print carbon fiber and composite substrates.

The MG series works as both pad and screen printing glass ink.

MG Series food safe glass ink for pad printing and screen printing also has very high opacity and gloss compared to other glass printing inks on the market today. This feature makes it the perfect ink for printing on promotional items made of glass, ceramics, or metal, such as pre-printed glass panes, bottles, and tiles. In addition, the MG series will print on carbon fiber materials. This series will not only print on rigid materials, but it will also print on flexible parts by altering the hardener ratio. Learn more about glass pad printing ink applications.

Printing ink hardeners

There are three hardeners available for this glass pad printing ink. These are the i-267x, i-260x, i-240x, and i-247x. The i-267x is the most popular printing hardener for the MG ink series. The i-247x speeds up the ink’s reaction and reduces the gloss effect of the ink film.

You might also be interested in G1 UV adhesion promoter for glass.

MG Series ink colors and compliance

MG Series pad printing ink for glass is available in 22 high-opacity color shades, 4 metallic colors, etch imitation, and 4 process colors. Like all other Natron inks, the shades within this series are intermixable to create new colors. Lastly, safety data sheets are available according to US and EU regulations. See the product label for primary indications.

Additionally, the MG Series ink for screen printing on glass is “non-toxic”, formulated with fade-resistant pigments that are free from heavy metals. As a result, this ink is safe to use on medical devices and healthcare surfaces.

In instances where a matte finish is required, by adding 2% matte powder to the ink, the gloss from the ink film is reduced. Before a production run, it is important to do preliminary adhesion tests when the matting powder is added.

Inks for printing on metal and glass adhesion tests

This metal printing ink is easy to use and very resistant to binding, shearing, creasing, and chemical agents. On metals, glass, ceramic, and hard plastics, it can stand up to detergents, hot water, alcohol, acids, and alkalis. This requires the ink film to be properly cured after printing at 140 °C (250 °F) for at least 20 minutes. Here are tips on how to print glass.

Dishwasher-resistant tests:

  • Domestic dish washer: 600 cycles (65°C at 130 min for alkaline detergents)
  • Commercial dishwashers, e.g. Winterhalter glass washer (85°C at 3 minutes): 700 washing cycles

Chemical Resistance:

  • Perfume: G1-test after 24 hours;
  • Ethanol and glass cleansing agent: 500 DRS;
  • Aceton/MEK: 50 DRS.

Humidity resistance:

  • Condensation water test (75 °C at 100% RH for 30 minutes; cold water immersion test for 24 hours). Learn more about printing applications for this food safe ink for pad printing.

Available Sizes

  • 1.0Kg (2.2lbs)


  • i-267X


  • TMF (Fast)
  • TMS (Medium)
  • TSR (Slow)

Have questions about pad printing ink?

Technical Specs

Available Colors








Lemon Yellow




Gold Yellow






Rose Red




Rhodamine Red




Kelly Green




Bright Green




Light Blue




Reflex Blue


Dark Blue


Ultramarine Blue








Pale Rich Gold


Pale Gold


Etch Imitation


Process Yellow


P. Magenta


Process Blue


Process Black

Any Custom Colors+

Superior resistance to chemicals

The MG series ink is the best ink to print on glass and metal products that must be dishwasher safe, both domestically and commercially. After proper curing, the ink film exhibits outstanding chemical resistance to alcohol, acids, and alkalis. Compared to other two-component inks, this glass printing ink sticks to the surface very well and is very resistant to water.

Abrasion resistance

After curing completely, the MG series pad printing ink film has great adhesion to substrates. It has strong resistance against scratches. The hardener and proper curing of the ink increases its resistance to scratching and rubbing.

HD Prints

The MG printability delivers excellent pad release, which in turn delivers stunning and very opaque prints.

Compliant & certifications

The MG series inks are also non-toxic, free from heavy metals, and high-density, high-opacity inks. This pad printing ink meets and exceeds ATSM, Milspec, and medical application requirements. It is perfect for printing on food packaging, toys, promotional products, cosmetic packaging, housings, and other items requiring a high level of resistance.

Food Packaging, medical, and toy safe

This ink is perfect for printing on food packaging, toys, and medical devices and surfaces.

It’s the best print on glass you could make!

Print wow on glass! It is the best ink for very demanding glass and metal prints.


The MG series are the perfect inks for Pad printing glass, ceramics, metals, and more.

Mixing and Printing instructions

The only way to mix printing ink is by weight, whether you’re adding hardeners, solvents, or mixing different colors to make a new color.

The MG Series is a two-component glass ink for screen- or pad-printing applications. A solvent and hardener are required additives to use this ink.

Before mixing the ink with the additives, stir it thoroughly. Add the hardener, then stir thoroughly.

Mixing ratios for rigid applications:

  • 10%–16% hardener (i-267X); ten parts ink to one part hardener by weight.

Mixing ratios for flexible applications:

  • 20%–25% hardener (i-267X); four parts ink to one part hardener by weight

After mixing the ink and the hardener, add the appropriate solvent for your application. The solvent should be between 5% and 35% of the ink’s weight.

Note, the ink-hardener-solvent mixture is chemically reactive and must be processed within 7–9 hours.

Printing Parameters: Screen printing

For screen printing, use any of the commonly available polyester meshes and solvent-resistant emulsions. Use 175–230 mesh (mesh per inch)-count screens for the highest opacity and on dark substrates. Use a mesh count of 255–305 for fine details.

Printing Parameters: Pad printing

  • Use any commercially available clichés that are made of ceramic, photopolymer, laser, or steel plates. The recommended cliché depth is 20 μm for all standard prints.
  • Printing pads
    Use silicone printing pads. The ink works regardless of the hardness (durometer) of the pad.
  • Printing machines
    The Natron MG Series is suitable for both closed-cup and open-ink well machines. Use the appropriate thinner for the correct type of machine. For open-ink wells, use slower pad printing ink solvents (thinners).

Since the hardener is sensitive to humidity, you should avoid high humidity for a few hours after printing.

Labeling and safety information

Material Safety Data Sheets for the Glass Ink MG Series and its Auxiliaries are available in line with EU and US Regulations, offering full information on all important safety data.

MG Series and the Environment

The MG Screen and pad printing ink is a non-toxic ink that is made with pigments that don’t fade and don’t contain any heavy metals. Additionally, it is Eco-sustainable, meaning that it does not contain:

  • Alogens
  • Azo dyes
  • Formaldehyde
  • Latex
  • PAH
  • Phthalates
  • Animal origin ingredients
  • Bisphenol A (BPA)
  • G-B ester
  • Melamine
  • Persistent organic pollutants

Frequently Asked Questions

MG pad printing ink for glass, by Boston Industrial Solutions, Inc., has the best adhesion, opacity, gloss, and vibrancy properties on glass, ceramic, and metal products. This series comes in a variety of colors, including metallic colors. The MG Series is also classified as non-toxic and made with fade-resistant pigments that are free from heavy metals.

Yes, you can pad print on glass using the MG series pad printing inks.

There are different types of ink for pad printing. Standard solvent-based inks are the most common and come in two variants: one- and two-component inks. Then there are also the UV-based and water-based inks. The best ink for pad printing is the right ink for your printing applications.  You should always account for the end use of the substrate, sustainability, and longevity of the prints.

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