This detailed article explains why a strap machine might not seal properly, covering common causes such as strap quality, tension, mechanical and electrical issues, and additional factors like environment and operator handling. It provides comprehensive troubleshooting advice and maintenance best practices, emphasizing the importance of OEM quality machines from Hebei Ouye Carton Machinery Co., LTD. The FAQ section addresses common questions, making it a valuable resource for those wanting to optimize their strapping machine performance.