Method and apparatus for making reclosable plastic bags using a pre-applied slider-operated fastener

A method of making reclosable plastic bags, comprising: mounting a plurality of sliders (40) in a continuous length of fastener (10), attaching the continuous length of fastener (10) to a flat strip (50), moving a plastic film; then mount the sliding guides (40) in the closure (10) and fix the closure (10) to the band (50) moving flat, forming the band (50) bags (80) successive; and successively filling and sealing the bags (80) in succession.