Water-Based Screen Printing For PU/TPU Material
Water-based screen printing is a green printing technology designed specifically for polyurethane (PU) and thermoplastic polyurethane (TPU) elastomer materials. It uses water as the main solvent (accounting for 60-80%) to replace the volatile organic solvents in traditional solvent-based inks, achieving a reduction of VOCs emissions of more than 90% while maintaining excellent printing performance.
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Core Components:
Waterborne Polyurethane Resin: Chemically similar to PU/TPU, providing excellent adhesion and elasticity.
Pigment System: High-concentration, lightfast pigments ensure vibrant and long-lasting colors.
Functional Additives: Dispersants, defoamers, leveling agents, crosslinking agents, etc., optimize printing performance.
Deionized Water: Main solvent, environmentally friendly, safe, and easy to clean.
Product Characteristics and Advantages
Environmentally Friendly and Safe
Ultra-low VOCs: Content ≤50g/L, far lower than solvent-based inks (≥300g/L), no irritating odor.
Non-toxic and Harmless: Free from harmful solvents such as benzene and toluene.
Easy to Clean: Equipment and screens can be cleaned with water, significantly reducing workshop environmental pollution.
Process Compatibility
Wide Substrate Compatibility: Compatible with PU leather, TPU film, synthetic leather, waterproof nylon fabric, and other elastic materials.
Flexible Screen Selection: 300-400 mesh polyester screens ensure smooth ink flow and detailed pattern rendering.
Squeegee Compatibility: 65-70 degree polyurethane squeegee with a 75° printing angle and uniform, moderate pressure.
High Drying Efficiency:
Natural Drying: Surface dry in 30-60 minutes at room temperature (25℃), fully dry in 2-4 hours.
Hot Air Drying: Surface dry in 10-15 minutes at 50-80℃, significantly improving production efficiency.
FAQ:
Will the ink film crack after repeated stretching or bending (e.g., around shoelace holes) on printed PU/TPU products?
No, it will not crack. The ink film has an elongation at break of ≥300%, capable of withstanding 100,000 cycles of bending (180° angle) and 50% stretching, perfectly matching the elastic properties of PU/TPU materials. Cracks or ink smudging will not occur during daily use.
Will outdoor products (such as backpacks and sports equipment) fade or age after prolonged exposure to sun and rain?
Excellent weather resistance. The pigments use a UV-resistant formula, with a lightfastness rating of ≥6 (xenon lamp aging test).
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