UV INVISIBLE INK HOW IT WORKS

The 3 steps to follow when using

Ink Formulation and Printing

Stir thoroughly: After opening the can, stir the contents thoroughly. Two-component inks must be mixed in the specified ratio.

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Curing conditions

Low-temperature curing: Cure at 100–130°C for 20–30 minutes, or cure at 180°C or above for 10–15 minutes (depending on ink type).

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Storage and Security

Sealed Storage: Unused ink must be sealed and stored at 0-10°C. Avoid high temperatures and direct sunlight.

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ลักษณะ

With focus on turning ideas into actions

Invisible Stitching Marking

Used in line drawing and screen printing for shoe materials.Invisible under normal light, visible only under UV light.Ensures accurate stitching without affecting appearance or design.

Bright UV Visibility & Fast Drying

Transparent in normal light with strong UV fluorescence.Easy to identify and verify under UV light.Fast drying, suitable for high-speed footwear production.

Strong Adhesion & Safe Use

Excellent adhesion on synthetic leather, textile, and coated uppers.Durable and reliable during stitching and handling.Non-toxic and safe for footwear manufacturing.

UV Invisible Ink

HOW IT WORKS

Key considerations for screen

printing UV Invisible Ink:

Screen Selection and Plate Making

1. Mesh count: Recommended 80-120 mesh. Excessively high mesh counts may prevent silicone from passing through, while excessively low counts may cause uneven flow.
2. Photoresist thickness: Requires 0.1-0.5mm to enhance three-dimensional effects. Adjust based on sample thickness.

Ink Types and Curing

1.Two-component silicone: Requires mixing of A/B components, baking at 120-160°C, offers strong adhesion but requires high-temperature resistant materials.
2.One-component silicone: Air-dries naturally (6-10 minutes), suitable for fabrics or plastics that cannot withstand high temperatures.

Printing Process Control

1. Ink Layer Thickness: Conductive ink must be >30μm, with resistance <200Ω (4mm spacing)
2. Squeegee Hardness: Approx. 55° Shore A, speed 12-24 cm/s, to prevent deformation of curved key bodies
3. Design Specifications: Character spacing should not be too close; background area should be 0.1-0.2mm smaller than surface color to prevent adhesion

Environment and Safety

1. VOC Restrictions: Must comply with standards such as EU Directive 2004/42/EC to control volatile organic compound emissions.
2. Food Contact Safety: For food packaging applications, must meet migration limits and heavy metal thresholds specified in GB 4806.14-2023.

Frequently Asked Questions

1. Color Variation: A 0.1μm variation in ink layer thickness can cause noticeable color differences, requiring strict control of ink-water balance.
2. Screen Clogging: Excessively rapid solvent evaporation may clog mesh openings; add defoaming agents (e.g., SSYK defoamer at 0.5-1.0%).

DIAGNOSTIC

Understand

your problem

UV INVISIBLE INK PRODUCTS

Synthetic Leather (PU / PVC)

Microfiber Upper Material

Textile & Knit Upper Material

Genuine Leather

TPU Film & Hot-Melt Material

UV INVISIBLE INK MODEL

  • MP Series AY Series  
  • UV Invisible Ink Screen Printing Invisible Ink  
  • HIGH BRIGHTNESS 99.99%INVISIBLE  
  • Unblocking Nozzles 2-3 SECONDS AT 60℃ COLOR WILL DISAPPEAR  
  • 99.99%INVISIBLE HIGH BRIGHTNESS