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2008 CATALOG WWW.ICCINK.COM

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Pre-Heating<br />

Because nylon fabric changes size when heated (as in flashing), pre-heating the fabric or jacket<br />

before printing is highly recommended. Pre-heating also helps to remove wrinkles from the<br />

fabric. Wrinkles or creases can often show up in the printed images, causing misprints. The<br />

fabric or jacket should be sent through the dryer or pre-heated with the flash cure unit for<br />

approximately 2 to 5 seconds, reaching a temperature of 150°F to 200°F. The flash cure unit<br />

should be set between medium and medium high heat. Flash cure units with one heat setting will<br />

need to be adjusted and tested for correct height and dwell time. Flash cure units that swing in<br />

and away automatically, at a set time, are highly recommended.<br />

All flash cure units should be adjusted for dwell time and temperature before production begins.<br />

Single Color Printing<br />

The Nylon fabric must be held securely in place, even on a single color print. Correct amount of<br />

off contact and clean screen break immediately after the squeegee passes is extremely important<br />

in eliminating slurring or double imaging.<br />

Multi-Color Printing<br />

Both spot color and process multi-color printing success is dependent on ink film thickness.<br />

Flashing time will vary according to the ink film thickness. Nylon fabric should be printed while<br />

warm. If the fabric is printed while hot the ink may start to gel in the screen. Nylon that is left to<br />

cool for too long, generally changes size or shape slightly. The change will cause missregistration<br />

in the print.<br />

Curing<br />

The heat element distance should be high enough so the fabric does not scorch. The entire ink<br />

film (both area and thickness) must reach 300°F to 325°F (149°C to 163°C) to achieve a full cure.<br />

The ink film adhesion will become stronger and more abrasion resistant over the next 48 to 72<br />

hours.<br />

Frequently Asked Questions<br />

Q. -- Why do I have to use a two part ink system?<br />

A. -- Most of the 1-part nylon inks on the market today are solvent based. These inks usually<br />

have a strong odor, are very slow flashing and sometimes require 30 seconds or more to<br />

flash between colors. Strong solvents are normally required for the clean up of these inks.<br />

Unlike some one-part nylon inks, the 900 series inks are fast flashing and are great for<br />

multicolor printing. The 900 Series inks are low odor and will clean up with most low V.O.C.<br />

plastisol screen washes.<br />

Q. – Why is 900 Series better than a regular plastisol mixed with nylon adhesion promoter?<br />

A. -- The 900 Series inks and 900LF Catalyst were formulated to work together to give the best<br />

possible adhesion and durability on most nylon substrates. While the 900LF Catalyst will<br />

improve the adhesion of standard plastisol inks to problem fabrics, conventional plastisols<br />

generally will produce a less durable ink film when used on nylon.<br />

Q. – What is the recommended reducer or thinner?<br />

A. -- International Coatings recommends mineral spirits or 1110LF reducer.<br />

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