A sack is formed by first transverse sealing seams from a foil tube, and is provided with at least a first vent channel, which runs largely parallel to the axis of the film tube, and whose inner film layer has first vent openings for venting of the sack interior into the first vent channel. A second vent channel is provided, which is connected to the first vent channel by second vent openings, and which, in turn, has third vent openings, which vent the at least one second vent channel.

An apparatus for making a self-opening bag pack includes a supply of film material. An extruder forms a continuous tube of film. A flattener flattens the tube. A corona treater treats at least one surface of the flattened tube. A first sealer forms a bottom seam across a width of the flattened tube. A cutter cuts the flattened tube into bag blanks at a predetermined distance from the bottom seam. A stacker forms the bag blanks into a bag pack. An adhesion knife penetrates the bag pack and adheres adjacent bag blanks together in the bag pack. An aperture maker forms means for suspending the bag pack from a dispensing rack. The pack is attached to the dispensing rack and the front wall of the subsequent bag will be adhered to the rear wall of a first bag, thereby causing the first bag to open when pulled from the rack.

A packaging unit for hygiene articles, the unit being formed from a sheet of material having an inner surface, said inner surface comprising an edge portion being provided with a resealable adhesive for closure of the packaging unit. The sheet has a longitudinal center line and at least one transversely extending folding axis dividing the sheet into a first region and a second region. A tab is arranged at an edge portion of the first region. The tab extends in a longitudinal direction from said edge portion so that an extension of the tab along or parallel to the center line from a tab base to an outer edge of the tab is 0.5 cm or more. A method of forming the packaging unit is also provided.

An incision station for making a plurality of weaknesses respectively on a plurality of portions of a web, for producing a plurality of packages each of which including a supporting sheet corresponding to a respective portion of the portions and an opening system corresponding to the weakness made on the respective portion. The station includes a plurality of motor driven incision bodies for making incisions in the respective portion to create the weaknesses. The incision bodies are also controlled to obtain a distance needed to contact the respective portion. This invention also relates to a packaging machine which includes the incision station and a incision method for making the above-mentioned plurality of weaknesses.

One or more implementations of a multi-film thermoplastic structure include a first film having a first appearance in contact with a second film having a second appearance at one or more visually-distinct contact areas. Wherein the one or more visually-distinct contact areas, cause the first film to take on the second appearance of the second film. The visually-distinct contact areas being of a uniform gauge and configured to separate before either of the first film or the second film fails when subjected to peel forces.

A packaging container with a pull tab is provided. The packaging container includes a pouch with at least one opening or at least one perforated openable area in a pouch wall, and one or more pull tab labels adhesively connected to at least one outside wall of the pouch and covering the at least one opening or one perforated openable area. The one or more pull tab labels include a substrate with at least one notch in an edge of the pull tab label and a pressure sensitive adhesive on at least a portion of one surface of the substrate. The peel strength between the pull tab label and the outside wall of the pouch is lower in the area of the pull tab label proximate the notch then in the area of the pull tab label proximate the opening or the perforated openable area in the pouch.

A non-continuously laminated structure of thermoplastic films comprises thermoplastic films with differing material compositions and differing functional benefits. In particular, one or more embodiments comprise thermoplastic films that are co-extruded separately and then combined together by a post-extrusion bonding process. The differing composition of the various films of the non-continuously laminated structure of thermoplastic films and the post-extrusion bonding process, provide the structures with the functional benefits of the individual films.

A method for the production and filling of packaging includes unwinding flattened tubular film material from a roll along a primary axis of symmetry thereof, providing the tubular film material via a welding and separating process with a first lateral welding seam perpendicular relative to the axis, and separating the tubular film material along a separation line to provide a hose section. The hose section open at one side is filled, and the still open other side of the hose section is provided with a second lateral welding seam. Two subsequent separation lines are inserted in the hose section at a distance that is less than the distance between the two edges of the hose.

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 sealing zone, and a weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, and may include a heating wire. The heating wire may be an NiCr wire stitched into holes in a cap or on the seal bar. Bushings may be disposed in the holes.

A polymer bag is disclosed, along with a method of manufacture. The bag is formed of two facing sheets of polymer film, a top edge, a bottom edge, and two side edges. A polymeric zipper is attached to the inside of the facing sheets parallel to and between the top and bottom edges. A respective reinforcing patch is positioned on the inside surface of each of the two respective facing sheets and between the zipper and the top edge. An opening through each reinforcing patch and in the face overlying each patch defines a bag handle.