Automatic manufacturing procedure for plastic bags with slider-operated closure has fastening strips inserted transversely and projecting at sides

摘要

The procedure for manufacturing plastic bags from continuously moving film layers or pleated sleeve (100) has closures (200) in the form of interlocking fastening strips (210, 220) with sliders (300) inserted transversely between the moving film layers or inner surfaces of the sleeve. Each closure assembly is longer than the width of the bag, and the slider (300) is positioned at one end of the assembly and outside the bag during the fastening operation.