What is a temperature-varying ink?
Temperature-changing ink is a special ink that can change color according to temperature changes.

What's the principle of temperature-varying inks?
The color change principle of temperature-changing ink is mainly based on its main component - thermochromic microcapsule pigments. This pigment consists of a special dye wrapped in a microcapsule that undergoes physical or chemical changes when a specific temperature threshold is reached. For example, when the temperature rises, some components in the dye may undergo phase changes (such as solid to liquid) or structural changes. These changes cause changes in the dyes' absorption and reflection properties of light, giving them a different color to the human eye.

A variety of temperature-varying inks provide enhanced visual effects


In the past, it was common to combine one or two thermovarying inks to indicate temperature changes on packaging, however, Coca-Cola Turkey used four separate temperature-varying inks for the first time to create eye-catching designs when the jar was cool and the drink was ready to drink. This new approach to using temperature-varying inks as decorative tools demonstrates the potential to further innovate and expand their applications in the packaging industry。

Visually appealing and interactive design


Coca-Cola Turkey's packaging design for Coke Red and Coke Zero beverage cans features summer themes such as ice cubes, palm trees, sandals and sailboats. At room temperature, these images are colorless, and when the drink is cool and suitable for drinking, they become colorful patterns.

Environmental impact of temperature-varying inks


While temperature-varying inks add novel visual effects to packaging, they also spark discussion about their impact on the environment. Temperature-varying inks are mainly composed of polymer microcapsules, pigments and resins. In fact, compared with traditional inks, temperature-varying inks produce fewer harmful substances in the manufacturing process, thanks to the raw materials used and the improvement of production processes. However, due to the impact of its production process, it is still necessary to be aware of the negative environmental impact that it may have in the process of waste disposal, recycling and production, and continue to work on research and development of more environmentally friendly alternatives.

The introduction of temperature-varying inks as a decorative tool into promotional packaging at Coca-Cola Turkey paved the way for future innovation in the packaging industry. As Matt Twiss, Director of Marketing & Business Development at Crown Bevcan Europe & Middle East, explains: Temperature-changing ink technology conveys a fresh and playful message in a beautiful, innovative way, while encouraging consumers to interact with brands at the point of sale and during the drinking process. In the future, temperature-changing inks may further penetrate into other fields and bring consumers a richer product experience.

Push & Dose is a stand up pouch with a perforated top that holds 1-3 ounces of product depending on product density, using it by simply inverting the flexible pouch and squeezing the top two corners toward the center. The top of the bag is a food-grade film heat sealed to the body material of the bag, the internationally patented Push & Dose film uses a laser to cut out a slit, the slit expands into a hole when the top of the bag is squeezed to release the product, and when the squeeze is stopped, the hole will automatically shrink into a slit. Although not completely sealed, it is sufficient to effectively protect the quality of the dry spices in the package, and the optimal shelf life is usually 18 months.



1. Economical and environmentally friendly
Compared to rigid containers such as plastic, metal, glass and even paper, Push & Dose flexible packaging has lower material, production and transportation costs, requires less energy to produce flexible bags, and minimizes waste generation, making it a very economical and environmentally friendly solution.

2. Suitable for a variety of product sizes
Push & Dose can customize the size and shape of holes according to the product, perfectly match the product needs, and the number of holes can be controlled in the range of 1-1000.

3. Applicable Products


(1) Spices and herbs

(2) Food, such as cheese powder, milk powder and cake decorations

(3) Medical products, such as hemostatic powder

(4) Cosmetics, such as hair tonic powder, dry shampoo, talcum powder

(5) Special products such as seeds and pet food