Fastener assembly for plastics bag

The present invention includes methods, apparatus and system in which reclosable bags and components are formed. Resealable bags are made from base material band having transversely applied to other segments of fastening tape (10). The web material used in a process for forming bags filling and closing vertically. The method includes the steps of supplying a continuous strip of strip (10) having a first (12) and second (22) closed closing element thereon. The first and second closure element each have a pair of male profiles (16, 18) and a pair of female profiles or U-shaped (24, 26) on them, each profiled to interlock with the other. A bridge thickened closure (20) between the plug and a second bridge thickened end (48) between the female elements (4, 6) allows precise closure of the fastener on the clamping band or the walls of the bag as you like. it also facilitates interlocking profiles remain.