Vertical form fill seal apparatus for making flexible packages with slider fastener closures is provided. The enclosure defines a receiving space for receiving the electronic components and the thermal insulation member. The machine-logic based interpretation is based on rules that are applied based, at least in part, upon features andor characteristics of the visualization. The composite stud also includes a core component configured and sized for allowing insertion thereof in the base channel. The receiver includes a gas duct to convey gas into the chamber to fire the projectile.