Long Fiber Reinforced PLA (LFR-PLA) is an engineering plastic that combines long glass fibers with polylactic acid (PLA) resin.  PLA itself is an environmentally friendly thermoplastic, known for its biodegradability. However, it has limited mechanical properties, such as strength, toughness, and heat resistance. By incorporating long glass fibers, the performance of PLA is significantly improved, making it suitable for demanding applications.