Game Changer in Production of Sustainable Mono-material Spouted Pouches. MENSHEN and Mespack, the partners who work together innovating for sustainable solutions for the flexible packaging world. The LoTUS spout from MENSHEN is perfectly adapted to mono-material pouches thanks to the Mespack’s HFFS technology. MENSHEN and Mespack, a leading manufacturer of innovative and sustainable flexible packaging solutions, have been working together innovating for new sustainable solutions.