Champion Inks® IronBlock LC – Grey Blocker Underbase – 270°F Low Cure for Dye Migration Control
Professional-grade underbase for heat-sensitive and dye-prone fabrics.
Champion Inks® IronBlock LC is a low-cure, high-opacity grey blocker plastisol ink engineered to prevent dye migration across all garment types — from 100% polyester to poly/cotton, tri-blends, and sublimated fabrics. Perfect for athletic wear, performance apparel, and fashion prints, it creates a strong, consistent barrier that keeps whites bright and colors vivid, even on difficult fabrics.
Formulated for efficiency and durability, IronBlock LC cures as low as 270°F–290°F, reducing heat stress and production time. Its buttery, smooth consistency provides effortless application and superior coverage in just one pass, making it the ideal foundation for topcoats of white or color plastisol inks.
Key Features & Benefits
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Universal Grey Blocker – Prevents dye migration on polyester, tri-blend, and sublimated fabrics.
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Low Cure Temperature (270°F–290°F) – Protects heat-sensitive materials while maintaining print integrity.
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High-Opacity Grey Base – Delivers strong coverage and excellent color holdout in one hit.
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Excellent Bleed Resistance – Forms a solid barrier layer that stops color bleed-through.
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Ultra-Smooth Texture – Creamy consistency ensures effortless printing and rapid flash performance.
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Phthalate-Free & CPSIA Compliant – Safe for use on all types of garments, including children’s apparel.
Recommended Use
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Mesh Count: 86–305 depending on fabric and ink deposit requirements.
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Flash Temperature: 220°F (104°C) for 3–5 seconds.
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Final Cure Temperature: 270°F–290°F (132°C–143°C) for complete curing.
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Squeegee: 60–70 durometer, medium pressure for even ink laydown.
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Top Coats: Compatible with white or color plastisol inks.
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Substrates: All fabric types — polyester, tri-blends, cotton/poly blends, and sublimated garments.
Performance Advantages
- Blocks dye migration on even the toughest sublimated fabrics.
- Low-cure formula prevents fabric scorching and color distortion.
- Increases production speed with shorter flash times and lower dryer settings.
- Provides a stable, uniform print base for overprints and detailed designs.
Safety & Compliance
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CPSIA Compliant – Lead content <300 ppm; Phthalates <0.1% DBP, DEHP, DINP, DIDP.
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Prop 65 Compliant – Safe for apparel and consumer products.
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Protective Gear Recommended – Use gloves and safety glasses while handling inks.
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Ventilation – Use in a well-ventilated area to minimize fume exposure.
Why Choose Champion Inks® IronBlock LC?
Champion Inks® IronBlock LC delivers unmatched dye-blocking strength, low-temperature performance, and effortless application for professional screen printers. Its superior grey base ensures color accuracy and print vibrancy across a wide range of synthetic and blended garments.
Trusted by print professionals worldwide, this low-cure underbase sets the standard for consistency, quality, and reliability in high-demand production environments.
Champion Inks® — precision-engineered for the toughest fabrics and fastest shops.
