Aluminum Foil for Semi-rigid Aluminum Flexible Ducts
The spiral bonding molding process of semi-rigid aluminum flexible ducts places extremely stringent comprehensive performance requirements on the base aluminum foil—it must maintain structural integrity during continuous bending, provide sufficient tear resistance at the seams, and simultaneously ensure airtightness and corrosion resistance for long-term use. As the core load-bearing material of the duct system, the alloy selection, condition control, and surface quality of the aluminum foil directly determine the mechanical properties, service life, and system energy efficiency of the finished duct. Alloy System: Why 8011 is the Preferred Base Material for Semi-rigid Ducts? During the spiral molding process of semi-rigid ducts, the aluminum foil undergoes repeated bending and bonding deformation. Pure aluminum (1xxx series) lacks sufficient strength and is prone to deformation, while 3003 alloy, with its excessive hardness, is prone to cracking at the sea...