General Description

4408 R is a single part heat curing ink for applications using MARKEM 530 and 534 printers or other similar pad printing systems. It was designed specifically for printing on materials used in the manufacture of electronic components including low stress and conventional molding compounds, ceramics, anodized aluminum, and gold.

Cure Property: heat cure

Thinner: WL

Cleaner: 320

Remover: 210

Accessory Chemicals:
This product should be ready for use as received, but the addition of thinner may be required to establish a viscosity appropriate for the application. For printing heavier line widths and/or deeper etches, the standard viscosity is appropriate. Extremely fine line printing or shallower etch depths (<.7 mil) require a lower viscosity. If the ink's viscosity is too high for the application it will not flow easily into the finer portions of the etch, causing incomplete prints on the pad or a grainy appearance in the finer print. Once the optimum viscosity has been determined, a reference reading should be taken with a calibrated spatula. Monitor the viscosity in the reservoir every four hours and add thinner as required.

Drying / Curing: The recommended heat curing conditions are 165°C for 30 minutes. The curing time begins once the substrate has reached the curing temperature. Substrate material, ink thickness, and oven temperature will affect the curing time. An industrial oven with forced vented air is recommended. Depending upon adhesion and mark permanence requirements, less cure time and/or temperature may be required.

Technical Data: • With any MARKEM ink the surface to be printed must be properly cleaned prior to marking.
• The reservoir life of this ink is between 2 and 5 days with proper thinner addition.
• Cured prints of inks in this series have shown good resistance to the following conditions after application in accordance with MARKEM's recommended procedures:
> solvents, including those specified in MIL-STD-883 Method 2015
>tape pull
> acidic plating preparation solutions and solder flux/solder dip processes.
• Developed for fine line printing. Avoid large open print areas.

Shelf Life: The shelf life for this ink series is six months from the date of shipment or twelve months from the date of manufacture, whichever is less.

Optimum storage condition is at 5-10°C in the original unopened container. Allow ink to warm gradually to room temperature before use.

Important Notes

• The materials used in formulating this product may present health or safety hazards as defined by the OSHA Hazard Communications Standard. Always consult the Material Safety Data Sheet for specific hazard information before using this product.
• No warranty for suitability of chemical products for specific applications is expressed or implied. The performance (transfer, adhesion and permanance) of any ink is directly related to the cleanliness of the surface being printed. The specifications for these chemical products are subject to change without notification or obligation.
• Contact Sales Support, or your local MARKEM representative, for assistance with colors, related inks for other application methods, or any other application questions.

Technical information is subject to change without notice.

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