Encapsulated PCMs: How They Work

Encapsulated phase change materials (PCMs) consist of an encapsulated substance with a high heat of fusion.  The phase change material absorbs and releases thermal energy in order to maintain a regulated temperature within a product such as textiles, building materials, packaging, and electronics.  The capsule wall or shell provides a microscopic container for the PCM.  Even when the core is in the liquid state, the capsules still act as a solid – keeping the PCM from “melting away.”