Production System for Biocomposite Drinking Straws

Introduction to Bass PHA Biomposite Straw00:00:00

Safa Harun introduces the Bass PHA biomposite straw, highlighting its compostable and moisture-resistant properties. The current issues with paper straws becoming soggy and PFAS-coated plastics not being sustainable are addressed, positioning the PHA straw as a superior alternative.

Target Users and Business Value00:00:24

The straw is designed for cafes, restaurants, hotels, and their distributors. Its standard size (6-8mm) ensures seamless integration with existing lids and dispensers, leading to low switching costs for businesses and a better performing straw for customers. The raw material is sugarcane bagasse, an agricultural byproduct, which is converted into PHA and used for reinforcement, diverting waste and shortening supply chains.

Production System Overview (Stages 1-5)00:01:08

Stage one involves cleaning the bagasse to remove impurities. Stage two is shredding the fibers into consistent lengths. In stage three, hydrolysis breaks down fibers into a sugar solution. Stage four is fermentation, where microbes convert the sugar solution into PHA. Finally, stage five recovers and dries the PHA into pellets for compounding.

Production System Overview (Stages 6-9)00:01:47

Stage six is compounding, blending PHA pellets with bagasse fiber using a twin-screw extruder. Stage seven uses extrusion to form hollow tubes, cooled in a water bath. Stage eight cuts the tubes into straw lengths and dries them. Stage nine covers quality control and packaging, testing for diameter, soak resistance, strength, and taste neutrality before packaging into moisture-controlled cartons.

Innovation and Sustainability00:02:26

The innovation lies in deriving both the polymer and fiber reinforcement from a single waste stream, bagasse. This approach reduces imports, lowers complexity, and improves sustainability, resulting in a practical and market-ready product.