A resealable plastic bag having a substantially planar shaped body exhibiting first and second opposing panels, sealingly connected along a pair of sides and with a bottom interconnecting the sides such that the body forms an interior receptacle volume. A pair of re-sealable bead portions are integrally formed into the planar shaped body and arranged at first and second opposing and extending locations along a top of the body. A header is integrally formed with the planar shaped body and in proximity to the bead portions. A perforation line is established between the header and resealable bead portions, in order to facilitate tear-away removal of the planar shaped body from the header. A sliding zipper is attached to the bag and in order to contain the resealable bead portions therebetween. A plurality of headers can be heat staked together and in order to support a like plurality of bags. A method for constructing a resealable plastic bag is also disclosed according to the above structure and which utilizes a die extrusion process in the bag and header manufacture.