PU045 high fastness waterproof screen ink for nylon (2K)

When printing designs on windbreakers, padded jackets or nylon shell fabric, ink adhesion depends on the fabric surface, especially on nylon with a waterproof coating. PU045 is designed for flatbed screen printing on standard and waterproof nylon. The reference formulations use 1008 hardener and vary the ratio of white to clear ink depending on whether the target shade is dark or light.

Characteristics

▫ Excellent color fastness

▫ Outstanding adhesion

▫ High color yield

▫ Wet & dry rubbing fastness: Grade 4–5 (transparent)

▫ Resistant to finger scraping

▫ Strong covering power

▫ Matte finish with dry touch

▫ Good aging resistance

▫ Eco-friendly

▫ Suitable for flat screen printing

Appearance, Composition & Description

▫ Appearance & Composition: White (translucent) viscous paste, polyurethane polymer

▫ Brookfield viscosity: 100,000–120,000 cps

▫ pH value: 7.0 ±0.5

▫ Solid content: 35% ±1

Reference Formulation

1. For Dark Colors

▫ Water-based Nylon Ink White: 20%

▫ Water-based Nylon Ink Transparent: 80%

▫ Color paste: 3–5%

▫ 1008 No-bake curing agent: 2%

2. For Light Colors

▫ Water-based Nylon Ink White: 40%

▫ Water-based Nylon Ink Transparent: 60%

▫ Color paste: 3–5%

▫ 1008 No-bake curing agent: 2%

Applications

▫ Standard nylon, waterproof nylon, down jackets, windbreaker fabrics

▫ Umbrella fabrics, coated fabrics, denim, leather, modal, swimwear, etc.

Operational Procedure

1. Printing process

80–100 mesh → 2–3 passes (2-coat application) → Drying → Heat treatment or heat pressing (130–140°C, 8–12 sec)

2. Pre-testing is required due to fabric variability

▫ For coated fabrics, test adhesion between coating layer and PU system

▫ The company assumes no responsibility for issues caused by untested conditions or improper operation

PU045 is suitable for prints on nylon that require good adhesion, high opacity and a matte finish that feels dry to the touch. Before production, run a test print on the actual fabric, complete both the drying and heat-pressing steps, and then check print adhesion. For coated nylon, also check adhesion between the coating and the base fabric.