サーモクロミック糸:感熱変色糸の仕組みとテキスタイルでの応用
VELVE Technical TeamQuick Answer: Thermochromic thread is a specialty textile that changes color in response to temperature. When heated above a specific threshold (typically 30°C, 40°C, or 50°C), the thread transitions from one color to another. The effect is reversible. Velve manufactures custom thermochromic threads for anti-counterfeiting, smart textiles, brand identification, and creative apparel.
Frequently Asked Questions
What is thermochromic thread and how does it work?
Thermochromic thread contains microencapsulated leuco dye pigments that change molecular configuration at a precise temperature. Below the activation temperature the dye is in one color state; above it, the color changes. The process is reversible and repeatable, with activation temperatures of 30°C, 40°C, or 50°C.
What applications use thermochromic thread?
Anti-counterfeiting labels and tags, smart textiles, safety and heat-warning indicators, temperature-sensitive packaging, fashion and apparel, and medical textiles such as fever indicators.
How durable is thermochromic thread?
Velve thermochromic threads are engineered for 50+ standard wash cycles, 10,000+ reversible color-change cycles, stability up to 120°C in the non-activated state, and a 2+ year storage life under normal conditions.
What customization options are available?
Activation temperature (30/40/50°C), any two-color pair, polyester/nylon/cotton or custom base fiber, yarn counts from 40s to 120s Ne, sewing/embroidery/knitting form, and cone/spool/hank or custom packaging.
What is the difference between thermochromic and photochromic?
Thermochromic reacts to temperature; photochromic reacts to UV or sunlight. Both are reversible; thermochromic is typically used for body-heat and warm indicators, while photochromic suits sunlight and outdoor applications.
How do I request a sample or place an order?
Contact fcyy@velve.cn with activation temperature, color pair, fiber type, and quantity. Standard MOQ is 500g per color/type; evaluation samples are available.