Before learning about the plastic injection method of thermostatic powder, let me explain What is Thermostatic powder?

Thermostatic powder is also called thermochromic pigment, thermochromic powder, or heat sensitive pigment. It has quite wide applications in inks, plastics, coatings, toys, slimes, and other industries.

Thermostatic powder ~ Injection molding method: 

The material for thermostatic powder injection molding is preferably transparent or the lightest color material. It must not affect the color and temperature change effect of the thermostatic powder itself. 

The amount of addition in Plastic Injection Molding of heat sensitive thermostatic powder: 0.05%, 1%, 2%, 3% are all acceptable, depending on the actual operating requirements!