China Suppliers Factory Hot Sales Photochromic Ink for Color Change Screen Printing Under UV Light
Product peculiarity
Color change
Under ultraviolet irradiation, color-changing ink can change from colorless to colored, or from one color to another. This change is reversible, that is, after the light disappears, the ink will return to its original color.
Environmental protection
Usually water-based formula, friendly to the environment.
Flexibility
The printed coating has good flexibility and is suitable for use on flexible substrates such as fabrics.
Durability
The printed pattern has good washable resistance and wear resistance.
Wide application
suitable for a variety of substrates, including paper, fabric, plastic and so on.
Printing process
Ink preparation
Color-changing inks are usually made by mixing color-changing pigments (such as spiroxide, naphthalene and pyranes, etc.) with a transparent substrate.
The pigment particle size is usually between 2-5 microns to ensure good dispersion and printing effect.
Screen selection
High mesh mesh (such as 32 lines /cm) is usually used to ensure the fineness of the pattern.
Printing process
The ink is printed on the substrate using screen printing technology. After printing, it usually needs to be dried at a certain temperature.
In order to achieve the best discoloration effect, the thickness and curing conditions of the ink need to be controlled when printing.
Curing conditions
Color-changing inks after printing usually need to be dried at 60°C to 100°C.
During the curing process, the intensity and irradiation time of ultraviolet rays will affect the color-changing properties of the ink.
Aging test
In order to evaluate the durability of color-changing inks, artificial aging tests are often performed to simulate outdoor light conditions.
product DETAILS
Environment and safety
Application case
Frequently Asked Questions
Q:How does the color-changing ink change color?
Under ultraviolet (UV) irradiation, the ink changes from colorless to colored, or from one color to another. This process is fully reversible, meaning the ink returns to its original state once the UV light source is removed.
Q:What materials or substrates is this photochromic ink suitable for?
Because the printed coating offers excellent flexibility and durability, it is ideal for flexible substrates like fabrics (e.g., smart textiles, sportswear), paper, plastics, and various packaging materials.
Q:What is the recommended screen mesh and curing temperature for printing?
A high mesh screen (typically 32 lines/cm) is recommended to ensure high pattern fineness. After screen printing, the ink needs to be cured and dried at temperatures ranging between 60°C and 100°C.
Q:Is the color-changing ink environmentally friendly and safe to handle?
Yes, these inks are formulated as water-based mixtures, making them environmentally friendly. For safety, print in a well-ventilated space, avoid direct contact with skin, and prevent dust inhalation.
Q:How should I store the ink to ensure its longevity?
To keep the color-changing pigments stable, store the ink in a cool, dry, and well-ventilated space. Protect it from high humidity, extreme temperatures, and direct light exposure during storage.
Industry specific attributes
Material |
100% Polyester |
Weave Type |
Plain |
Elasticity |
low |
Printing |
Polyester Screen Printing |
Monofilament Style |
Yes |
Product Name |
Polyester Silk Screen Printing Mesh |
Color |
White Yellow |
Length |
50m/roll |
Application |
Screen Printing Industry |
Thickness |
46-693um Printing Mesh |
Roll width |
60-368cm |
Feature |
Heat Resistance |
Aperture |
31-1300micron |
Packaging Details
