Packaging and beverages
Labels that show when a product is chilled, and interactive packaging elements.
Product range / Thermochromic labels and liquid crystals
Thermochromic labels and liquid crystals
Materials that change colour in response to heat or cold — from strips for the textile industry and promotional and educational labels to thermochromic inks and pastes for your own applications.
Practical applications
Thermochromic materials for printing, warnings and visualisation
Thermochromic labels change colour in response to heat or cold. They can indicate when a drink is chilled, warn of a hot surface or create a visual effect on packaging and printed designs.
Printing and textiles
Thermochromic printing, screen printing, laminating, bonding and heat setting.
Research and education
Heat distribution visualisation, experiments and non-destructive surface testing.
Full product range details
Heat- and Cold-Activated Thermochromic Labels | LC KOLOR
Thermochromic materials change colour when heated or cooled. They are used as information labels, hot-surface warnings and chilled-drink indicators, as well as in packaging, printed designs, research and educational demonstrations.
The range includes ready-made heat- or cold-activated labels and liquid crystal sheets for visualising temperature distribution. Thermostrip DC is designed for process monitoring in the textile industry, while paints, pigments and inks are covered on a separate product range page.
Irreversible and activated indicators
3 products
Thermostrip DC
Temperature indicator strips for textile drying and curing · 37–290 °C
How it works
Self-adhesive strips developed for the textile industry. Each strip has 5 fields that permanently change from silver to black when their threshold is reached, leaving an irreversible record of the highest temperature. For monitoring bonding, laminating, heat setting, screen printing and UV ink curing.
Application and use
For monitoring process temperatures during textile drying, bonding, laminating and heat setting. Apply the label or sheet to a clean surface, after checking adhesion and the visibility of the colour change under the intended operating conditions.
- 5 temperature thresholds on one strip
- 8 temperature range sets available (Set 1–8)
- Permanent colour change: silver → black
- Resistant to oil, water and steam; °C and °F scales
- For dry applications
Technical specifications — Thermostrip DC(8)
| Overall range | from 37 °C to 290 °C (99–500 °F) |
|---|---|
| Set 1 / Set 2 | 38–54 °C / 60–82 °C |
| Set 3 / Set 4 | 88–110 °C / 116–138 °C |
| Set 5 / Set 6 | 143–166 °C / 171–193 °C |
| Set 7 / Set 8 | 199–224 °C / 232–260 °C |
| Accuracy | Set 1–2: ±1 °C · Set 3–4: ±1.5 °C · Set 5–8: ±4 °C |
| Size | 10 × 56 mm, self-adhesive |
| Pack size | 16 pcs. |
Data based on the manufacturer's documentation. Full datasheets are available in the documentation below.
Product FAQ
Frequently asked questions
What is Thermostrip DC best suited to?
For monitoring process temperatures during textile drying, bonding, laminating and heat setting.
How do I select the right Thermostrip DC?
Specify the activation temperature, required colour change, substrate, dimensions, lighting conditions and humidity level. Key features of this solution include 5 temperature thresholds on one strip and 8 temperature range sets available (set 1–8).
Cold-activated labels
Print that appears when cooled
How it works
Thermochromic labels and stickers that reveal an image or text when the product is chilled. Used to indicate when a drink is ready to consume, and for promotional and labelling applications.
Application and use
For packaging and beverages where graphics need to appear once the product is sufficiently chilled. Apply the label or sheet to a clean surface, after checking adhesion and the visibility of the colour change under the intended operating conditions.
- Colour responds to falling temperature
- Reversible colour change for repeated use
- Custom-printed versions available
- Applications: beverages, packaging, marketing
Manufacturer's video
Product FAQ
Frequently asked questions
What is Cold-activated labels best suited to?
For packaging and beverages where graphics need to appear once the product is sufficiently chilled.
How do I select the right Cold-activated labels?
Specify the activation temperature, required colour change, substrate, dimensions, lighting conditions and humidity level. Key features of this solution include colour responds to falling temperature and reversible colour change for repeated use.
Heat-activated labels
Indicate a hot surface or a product ready for use
How it works
Stickers that change colour when heated, showing that a surface is hot or a product has reached the required temperature. A simple, low-cost way to warn and inform users.
Application and use
For warning of a hot surface or indicating that a temperature has been reached. Apply the label or sheet to a clean surface, after checking adhesion and the visibility of the colour change under the intended operating conditions.
- Colour responds to rising temperature
- Reversible colour change
- Hot-surface warnings
- Custom versions available
Manufacturer's video
Product FAQ
Frequently asked questions
What is Heat-activated labels best suited to?
For warning of a hot surface or indicating that a temperature has been reached.
How do I select the right Heat-activated labels?
Specify the activation temperature, required colour change, substrate, dimensions, lighting conditions and humidity level. Key features of this solution include colour responds to rising temperature and reversible colour change.
Reversible indicators
1 product
Liquid crystal sheets
30 × 30 cm sheets for temperature mapping
How it works
Ready-made polyester sheets coated with liquid crystal that change colour with temperature: from black through red and green to blue. Used in research, education and non-destructive testing.
Application and use
For mapping temperature distribution, scientific demonstrations and surface testing. Apply the label or sheet to a clean surface, after checking adhesion and the visibility of the colour change under the intended operating conditions.
- Ready-made 12 × 12 inch sheets (30 × 30 cm)
- Respond even to the warmth of a hand
- Available with or without adhesive backing
- Reusable
Technical specifications — Liquid crystal sheets(3)
| Range | from 20 °C to 57 °C |
|---|---|
| Accuracy | ±1 °C (red, green) |
| Shelf life | 12 months |
Data based on the manufacturer's documentation. Full datasheets are available in the documentation below.
Manufacturer's video
Product FAQ
Frequently asked questions
What is Liquid crystal sheets best suited to?
For mapping temperature distribution, scientific demonstrations and surface testing.
How do I select the right Liquid crystal sheets?
Specify the activation temperature, required colour change, substrate, dimensions, lighting conditions and humidity level. Key features of this solution include ready-made 12 × 12 inch sheets (30 × 30 cm) and respond even to the warmth of a hand.
Questions to consider before choosing
Frequently asked questions
How do thermochromic labels work?
The material in the label changes colour when a specific temperature threshold is crossed. Depending on the design, the response is triggered by heating or cooling.
Can I order thermochromic printing for my own product?
Yes, the materials and activation threshold can be selected to suit the application. Selection requires information about the substrate, printing method, activation temperature and operating conditions.
Free quotation
Enquire about: Thermochromic labels and liquid crystals
We help you choose the right variant and threshold for your application — we usually prepare a quotation within 1 working day. You can also call: +48 22 666 82 95.
Other product groups
See also
Cold chain indicators
Single-use heat and cold indicators for chilled shipments.
Thermax temperature indicator strips
Eight temperature-sensitive zones for a permanent temperature record.
Liquid crystal thermometers
Reversible Digi-Temp® thermometers — horizontal and vertical, with 7, 8, 10, 13 and 16 segments, plus the Digi-Temp® EZ series.
Hygiene, sterilisation and food safety
Indicators for dishwashers, thermal disinfection and food temperature checks.
Thermochromic paints and pigments
Paints, pigments and coatings that change colour with temperature.
Medical and blood donation solutions
Forehead thermometers and indicators for medicines and blood containers.
Temperature and humidity data loggers
USB data loggers with PDF reports for dry ice, pasteurisation and humidity monitoring.
ShockWatch shock indicators
Single-use ShockWatch impact indicators for shipments and products.
Shock recorders and condition monitors
ShockLog, gView and SpotBot — impact, vibration and environmental monitoring.
TiltWatch tilt indicators
TiltWatch — check whether shipments stayed upright in transit.