Strapping seal

Seal and buckle joints are used for steel and plastic strap to attach strapping ends together. Seals and Buckles Seals and Buckles create strapping joints on steel or plastic strap, and joints are used to hold tensioned strapping ends together and help prevent the straps from coming apart. Metal strapping joints include a seal with a notch or crimp joint, and plastic strapping joints include a seal with a crimp joint or a secured buckle. Basic seal joint types Signode manual sealers provide positive sealing action with minimal effort. Light and durable, they lock strap ends into a high strength joint. Notch-type sealers cut into the seal and outer edges of the strapping, turning tabs down (down notch) or up (reverse notch). The strength of the notch joint comes from the mechanical interlock between the seal and strapping. Notch joints are typically used on waxed strapping in packaging and unitizing applications. Crimp-type sealers press the edges of the strapping and seal into wavy crimps (they do not cut into the strap and seal) and are specially shaped to produce maximum frictional forces on the strapping. The strength of the crimp joint comes from the deformed seal creating high frictional forces. Crimp joints produce high static and dynamic joint strengths and are used on applications like carloading in which the strapped load is subject to severe impact. Always use American Society for Testing Materials (ASTM D-3953) minimum break strengths for package design/safety factor purposes. For proper strap selection, contact your Signode sales representative.