TW Graphics UV Standard Colors – NXG-27 Dense Black Gallon | High-Opacity UV Screen Printing Ink for Signage & Plastics

Name: TW Graphics UV Standard Colors – NXG-27 Dense Black Gallon | High-Opacity UV Screen Printing Ink for Signage &amp; Plastics
SKU: TW NGX-27-01
Availability: InStock

TW Graphics

TW Graphics NXG-27 Dense Black is a high-opacity, UV-curable screen printing ink designed for bold, solid black coverage on signage, plastics, vinyl, coated board, and corrugated plastic. This dense UV black ink delivers strong coverage, deep color saturation, and excellent adhesion across a wide range of commercial printing substrates.

Engineered for production screen printers, NXG-27 provides consistent laydown, smooth flow, and reliable UV curing performance for both manual and automated in-line presses.

$194.32

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SKU: TW NGX-27-01 Category: UV Inks Tags: high opacity UV black ink, Nazdar UV black alternative, NXG-27 Dense Black, TW Graphics NXG UV ink, UV black ink gallon, UV dense black ink, UV ink for Coroplast signs, UV ink for plastics and vinyl, UV screen printing black ink, UV screen printing ink for signage

Description

What Is NXG-27 Dense Black Used For?

TW Graphics NXG-27 Dense Black is formulated for applications requiring strong black coverage, high density, and crisp edge definition.

This UV dense black ink is commonly used for:

Political yard signs
Real estate signs
Retail signage
POP displays
Industrial and safety graphics
Menu boards
Decals and labels
Transit and banner graphics

NXG-27 is ideal when you need a rich, deep black with excellent hiding power, especially over lighter substrates.

Designed for Sign Shops & Production Screen Printers:

Part of the TW Graphics NXG UV ink system, NXG-27 is engineered for stable viscosity and smooth ink transfer throughout long production runs. It performs reliably on manual presses as well as high-speed automated UV lines.

This product is commonly used as a:

UV screen printing black ink
High-opacity UV black ink
UV ink for Coroplast signage
UV black ink for plastics
Production UV black screen ink

Where It Performs Best:

NXG-27 Dense Black adheres to a wide variety of properly treated substrates, including:

Treated polyethylene (PE)
High-density polyethylene (HDPE)
Polycarbonate (PC)
Polystyrene / Styrene
Pressure-sensitive vinyl
Static cling vinyl
Reinforced vinyl banners
Coated paper and board stocks
Corrugated plastic (Coroplast™)

For polyethylene substrates, surface tension should be 42–46 dynes/cm or higher. Always perform adhesion testing prior to full production runs.

How It Cures:

This is a true UV-curable ink. It does not air dry.

NXG-27 cures under focused medium-pressure mercury vapor UV lamps in the 250–360nm spectral range.

Typical UV energy requirements:

150–300 mJ/cm² at 365nm (depending on ink film thickness)

Proper cure verification using cross-hatch adhesion testing is recommended after full cooldown.

Pantone Equivalent:

Pantone Equivalent – N/A (Black)
Closest Visual Match – Pantone Black C
Color Type – High-density black
Intended Use – High-opacity black coverage

Why Screen Printers Choose NXG-27 Dense Black:

High opacity – Excellent hiding power over light substrates
Deep black density – Strong, bold coverage
Stable viscosity – Consistent performance on long runs
Broad substrate compatibility – Vinyl, plastics, Coroplast, coated board
Fully compatible with NXG UV system – Interprintable with NXG colors

NXG-27 Dense Black is ideal for commercial sign shops that require bold, durable black graphics with reliable UV curing performance.

Nazdar® Cross-Reference – Comparable UV Black Ink:

Looking for a Nazdar UV black alternative?

TW Graphics NXG-27 Dense Black functions similarly to high-opacity UV black inks used in Nazdar UV ink systems. Both are UV-curable inks designed for strong coverage and production efficiency across plastics and signage substrates.

As with any ink substitution, adhesion and cure testing should be completed prior to full production runs.

Ordering & Shipping Information:

Drop Ship Item – This product drop ships directly from TW Graphics in Commerce, California
Processing Time – Please allow additional time for handling and shipment
Final Sale – Non-returnable and non-refundable
Orders Must Be Placed Online – Colors cannot be changed after ordering

Technical Specifications

TW Graphics NXG UV Standard Colors – Technical Specs & Usage Guide

Technical Specifications:

Ink Type: UV Curable Screen Printing Ink
Viscosity: Optimized for multi-color in-line presses
Curing Method: UV light exposure
Curing Energy Requirement: 150-300 mJ/cm²
Adhesion: Bonds to treated plastics, vinyl, and various rigid substrates
Durability: Up to 2 years light-fastness with automotive-grade pigments
Resistance: Water-resistant and highly durable for indoor & outdoor applications
Finish: Satin/Gloss (varies by substrate and curing conditions)
Printability: Low pile height rheology for smooth ink laydown
Thinner/Additives: NXG Series Reducer (use sparingly)

How to Use TW Graphics NXG UV Standard Colors

Step 1: Screen Preparation

Use a properly tensioned screen for optimal results.
Recommended mesh count: 230-355 tpi (90-140 tpcm), depending on image detail.
Coat the screen with a UV-compatible emulsion, ensuring full stencil adhesion.

Step 2: Ink Application

Stir the ink thoroughly before use.
Print using a 70-80 durometer squeegee with a sharp edge for crisp details.
Use a medium squeegee pressure for optimal ink deposition.

Step 3: Curing Process

Cure under UV light exposure at 150-300 mJ/cm² for full adhesion.
Ensure proper exposure time in the dryer to avoid under-curing.
Avoid excessive UV exposure, which can overcure and affect adhesion properties.

Step 4: Testing & Post-Curing Considerations

Always perform an adhesion test on a sample print to verify cure levels.
Allow the print to cool before stacking or packaging.
NXG inks are designed for optimal adhesion, but post-treatment options (such as flame or corona treatment) may be required for certain non-porous substrates.

Recommended Printing Substrates:

✅ Plastics & Synthetics: Treated Polyethylene, HDPE, Polycarbonate, Polystyrene (Styrene), Static Cling Vinyl
✅ Rigid Boards & Papers: Coated Board Stocks, Cardstock, Pressure-Sensitive Vinyl
✅ Banners & Signage: Reinforced Vinyl Banners, Coroplast™, Transit & Point-of-Purchase Displays

⚠ Important Notes:

This ink requires UV curing and will not air-dry.
Do not mix with solvent-based inks or non-UV-compatible additives.
Store in a cool, dry environment away from direct sunlight.

TW Graphics NXG UV Standard Colors deliver fast-curing, high-adhesion, and long-lasting performance, making them the perfect choice for screen printers working with plastic, vinyl, banners, and signage applications.

Technical Sheets / Safety Data Sheets / Documents

NXG UV Screen Printing Ink Technical Data Sheet

NXG UV Screen Printing Ink Safety Data Sheet

FREQUENTLY ASKED QUESTIONS

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