A machine and method for making bags is described and includes a web, traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.

A sealing jaw for use with a bagging apparatus including a removable jaw having a guide/retention member selectively releasable from a jaw holder. The jaw holder including a modular retainer assembly having a release member movable between a first position for securing the guide/retention member therewith, and a second position for releasing the guide/retention member therefrom. Selective release of the guide/retention member from the jaw holder is achieved without tools.

The invention relates to a sealing bar for a vacuum drawer for the vacuuming of food, having a base support comprising at least one heating wire as well as having a frame part with an integrated non-stick coating, wherein the frame part is releasably fastenable to the base support.

The invention relates to a sealing bar for a vacuum drawer for vacuuming food, having a base support which comprises at least one welding wire extending in the longitudinal direction over the surface, with the welding wire being fastened to the base support by means of a clamping connection at one side or at both sides.

A stitchless highly oriented polypropylene fabric bulk bag of the type that can hold 500 to 5000 pounds (226.7 to 2268 kilograms) of bulk material includes a highly oriented polypropylene fabric top, body and bottom, with a heat fused joint providing an air tight connection between the top and body, and another air tight heat fused joint connecting the body and bottom. A fill spout and discharge tube may also be provided with an air tight heat fused joint connecting the fill spout to the top and another air tight heat fused joint connecting the discharge spout to the bottom. Heat sealing machinery include heat seal bar assemblies that can self-align during heat-sealing to apply even pressure to all areas being heat sealed. A heating element is of single piece construction and can include end coupler portions as part of the single piece construction. Carrier plates used in a heat-sealing assembly line guide parts placement, provide quality checks for parts placement, and tooling set-up for machinery.