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What Is Thermochromic Ink? Heat-Sensitive Ink Guide

HomeNews › What Is Thermochromic Ink? Heat-Sensitive Ink Guide
2026-08-04 published
Reversible thermochromic ink (low-temp blue): turns blue at low temperature, fades to colorless when heated
SJH reversible thermochromic ink (low-temp blue): left cup shows the blue activated state, right cup shows the faded state after warming.

Thermochromic ink (heat-sensitive ink) changes color with temperature for security, warning and fun packaging.

What It Is

Triggered by hand warmth, hot water or body heat — no equipment needed. Color develops, disappears or changes with temperature.

Key Features

  • Custom triggers: 5/18°C low, 28/31/37/40°C ambient, 65/70/80°C+ high
  • Reversible or irreversible
  • Water-based, RoHS/REACH compliant
  • Screen, gravure, flexo, pad printing

Applications

Beverage temperature labels, tamper-evident seals, medicine temperature indicators, cultural products.

SJH Ink offers custom thermochromic ink with free samples. Tel 13510998453, www.sjhink.com.

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