Innovation is at the heart of everything we do at POLYMELT America. Our mission is not simply to deliver new pipes to the North American marketplace, but to deliver better pipes. As technology advances, so do our products. For more than six decades, POLYMELT has strived to create the most durable, efficient, insulated, and eco-friendly piping solutions possible. The result is five-layer construction of our ML5 polypropylene (PP-R) pipes.

Our long history as innovators in multilayer technology proved key to developing this revolutionary type of pipe. Our strong, light, five-layer fiber composite pipe combines the advantages of PP-R copolymer and glass-fiber-reinforced PP-R in one product thanks to the alternating layer structure.

The outer layer of each pipe is made from high-grade polypropylene granulate. This layer is color-coded to the pipe’s use and protects the inner layers. The four inner layers alternate between our proprietary glass-fiber compound and PP-R. Two layers of PP-R glass-fiber compound are the result of detailed research carried out at the POLYMELT Polymer-Engineering division and represent a breakthrough in the piping industry. Perfectly formulated interaction between the corresponding glass fibers and the PP-R matrix provides outstanding deflection and low-temperature impact strength. When it comes to linear expansion, POLYMELT has a third-party-verified expansion coefficient—an industry exclusive.

The glass-fiber PP-R layers are alternated with PP-R layers to improve long-term stress resistance at longer periods of operation, especially at higher temperatures. The innermost layer of every pipe is smooth PP-R, ensuring a low-friction inner surface that all but eliminates deposits and encrustations.

The result of this groundbreaking structure is a strong, lightweight design with a lifespan of 50 years or more. Our ML5 pipes require virtually zero maintenance to operate with optimal efficiency. If you’d like to know more about how POLYMELT’s five-layer construction is causing engineers, contractors, and building owners around the world to rethink the possibilities for piping systems, contact us today to speak to one of our PP-R experts.

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