Substrates

PowerPrint® 32500

• Styrene
• Rigid PVC
• Vinyl
• Some acrylics
• Some coated papers / cardstocks

CoroPlus® 32800

• Fluted Polypropylene
• Coroplast

Substrate recommendations are based on commonly available materials intended for the ink's specific market when the inks are processed according to this technical data. While technical information and advice on the use of this product is provided in good faith, the User bears sole responsibility for selecting the appropriate product for their end-use requirements. Reference the 'Quality Statement' at the end of this document.

User Information

Mesh

305-355 tpi (120-140 tpcm) with a mesh opening of 50 um or less monofilament polyester.

Coarser mesh counts and/or twill weave result in heavier ink deposit and may require additional cure output.

Stencil

Use direct emulsions and capillary films which are solvent resistant and UV compatible.

Squeegee

70-90 durometer polyurethane squeegee.

Coverage

Estimated 2,300 - 3,500 square feet (215 - 325 square meters) per gallon depending upon ink deposit. Reference www.nazdar.com for examples of coverage calculations.

Printing

PowerPrint® 32500's and CoroPlus® 32800's Series inks are formulated to be press ready. Thoroughly mix the ink prior to printing. Improper mixing can lead to inconsistent color and ink performance.

Maintain ink temperature at 65°-90°F (18°-32°C) for optimum print and cure performance. Lower temperatures increase the ink viscosity, impairing flow and increasing film thickness. Elevated temperatures lower the ink viscosity, reducing print definition and film thickness.

Pretest to determine optimum printing parameters for a particular set of ink, substrate, screen, press, and curing variables/conditions.

Inter-Printing Inks

PowerPrint® 32500's® Series inks can be inter-printed with other Nazdar UV Screen inks, including:

PowerPrint® 1600 UV Ink Series
PowerPrint® Plus 1800 UV Ink Series
PowerPrint® Banner 1900 UV Ink Series

CoroPlus® 32800's® Series inks can be inter-printed with other Nazdar UV Screen inks, including:

4200 UV Ink Series
PowerPrint® Plus 1800 UV Ink Series

Refer to the Technical Data Sheet for the inter-printed ink to determine processing recommendations.

Inter-Mixing Inks

Nazdar does not recommend inter-mixing of PowerPrint® 32500's Series with other inks besides the PowerPrint® 32500's Series and PowerPrint® 1600 Series.

Nazdar does not recommend inter-mixing of CoroPlus® 32800's Series with other inks besides the CoroPlus® 32800's Series and Nazdar's 4200 Series.

Storage

PowerPrint® 32500's and CoroPlus® 32800's colors have a shelf life of 2 years.

Store closed containers at temperatures between 65°-78°F (18°-25°C). Ink taken from the press should not be returned to the original container; store separately to avoid contaminating unused ink.

Note: PowerPrint® 32500's or CoroPlus® 32800's colors mixed with 1600 or 4200 Series colors have a shelf life of 4 to 6 months.

Cure Parameters

PowerPrint® 32500's and 32800's Series cures when exposed to a single medium pressure mercury vapor lamp emitting output millijoules (mJ) and milliwatts (mW) of:

100-160 mJ/cm² @ 600+ mW/cm²

These guidelines are intended only as a starting point for determining cure parameters, which must be determined under actual production conditions. "Undercuring" the ink may result in poor adhesion, lower block resistance, reduced durability, and higher residual odor. "Overcuring" the ink may reduce the flexibility of the printed part and adhesion of subsequent ink layers.

To increase mJ levels, slow down the belt speed or scan speed. To increase mW levels, increase the wattage setting of the UV reactor. To optimize mJ and mW output, maintain the bulb and reflector, and ensure proper focus to the substrate.

These guidelines are representative of measurements taken using an EIT® UVICURE® Plus radiometer measuring the UVA bandwidth (320-390 nm). To obtain accurate mW readings with the UVICURE® Plus, reduce the belt speed to less than 40 ft/min.

Note: Fluorescent colors fade with exposure to ultraviolet light. This includes outdoor exposure as well as UV reactor exposure. It is therefore recommended to adjust art so these colors are the final colors printed on any image.

Common Performance Additives

The market specific performance properties of the PowerPrint® 32500's and CoroPlus® 32800's Series should be acceptable for most applications without the need for additives. When required, any additives should be thoroughly mixed before each use. Prior to production, test any additive adjustment to the ink. Inks containing additives should not be mixed with other inks.

Example for additives- Ink at 100g with 8% of an additive is calculated as:

100g ink + 8g additive = 108g total

Reducer: Use RE302 UV Reducer to reduce the viscosity of the PowerPrint® 32500's inks. Add up to 10% by weight.

Use RE312 UV Reducer to reduce the viscosity of the CoroPlus® 32800's inks. Add up to 10% by weight.

Over reduction can reduce print definition, film thickness and adversely affect cure.

Adhesion Promoter: Use NB80 UV Adhesion Promoter to enhance adhesion to certain substrates. Add up to 5% by weight. Improved adhesion will be demonstrated within 24 hours, with full cross linking in 4-7 days. Ink mixed with NB80 UV Adhesion Promoter has a 4-8 hour pot life.

Cleanup

Screen Wash (Prior to Reclaim): Use IMS201 Premium Graphic Screen Wash, IMS203 Economy Graphic Screen Wash, or IMS206 Graphic Auto Screen Wash.

Press Wash (On Press): Use IMS301 Premium Graphic Press Wash.

General Information

Ink Handling

Wear gloves and barrier cream to prevent direct skin contact. Safety glasses are suggested in areas where ink may be splashed. If ink does come in contact with skin, wipe ink off with a clean, dry cloth (do not use solvent or reducer). Wash the affected area with soap and water. Consult the applicable Safety Data Sheet (SDS / MSDS) for further instructions and warnings.

For assistance on a wide range of important regulatory issues, consult the following Regulatory Compliance Department link at www.nazdar.com or contact Nazdar Ink Technologies - World Headquarters (see contact listing at the end of this document).

Adhesion Testing

Even when recommended UV energy output levels are achieved, it is imperative to check the degree of cure on a cooled down print:

• Touch of ink surface - the ink surface should be smooth.
• Thumb twist - the ink surface should not mar or smudge.
• Scratch surface - the ink surface should resist scratching.
• Cross hatch tape test - per the ASTM D-3359 method, use a cross hatch tool or a sharp knife to cut through ink film only; then apply 3M #600 clear tape on cut area, rub down, and rip off at a 180 degree angle. Ink should only come off in actual cut areas.

Weathering / Outdoor Durability

PowerPrint® 32500's and CoroPlus® 32800's Series ink colors fade quickly with exposure to UV light and are not recommended for outdoor exposure.

Manufacturer's Product Offering

Based on information from our raw material suppliers, these ink products are formulated to contain less than 0.06% lead. If exact heavy metal content is required, independent lab analysis is recommended.

Fluorescent Colors

Cured ink has a satin finish. The fluorescent additives mixed into the ink have the tendency to settle; mixing is required prior to printing.

Fluorescent colors fade with exposure to UV light. This includes outdoor exposure as well as UV reactor exposure. It is therefore recommended to adjust art so that these colors are the final colors printed on any image.

Color Card Materials

The following is available screen printed sample literature representing PowerPrint® 32500's and CoroPlus® 32800's Series inks.

UV Color Card (CARDUV): shows the Fluorescent colors.

Packaging / Availability

Contact your Nazdar distributor for product availability and offering.

Standard Ink Items

PowerPrint® 32500's standard ink items listed below are inventoried in gallon containers.

CoroPlus® 32800's standard ink items listed below are inventoried in gallon containers.

Additives / Reducers

Cleaners / Clean Up