A method of making a storage bag comprising the following steps performed in any order: (a) forming a composite tube having an inner surface comprising a higher melting polymer, an outer surface comprising a lower melting polymer, two ends, and a diameter; (b) flattening the tube in a direction perpendicular to the diameter; (c) forming a joint at one of the ends at a temperature between respective melting points of the higher melting polymer and the lower melting polymer; (d) providing a composite sheet having a first side comprising a higher melting polymer and a second side comprising a lower melting polymer; and (e) disposing the composite sheet over the joint such that the first side comprising a lower melting polymer engages the joint and forming a lap seam over the joint at a temperature between respective melting points of the higher melting polymer and the lower melting polymer, and a storage bag made by such method.

The invention describes a bag (300) having a first wall and a second wall that comprise paper and that are connected to one another by lateral edges such that a fill space is provided, wherein the second wall projects above the first wall as seen in the longitudinal direction of the bag, and having two ends, wherein a bottom is arranged on one end and an opening is provided on the other end, through which the fill space is accessible, wherein the bottom comprises at least one folding region of the second wall, wherein the folding region is folded over at least parts of the first wall about a crease line, and having at least one handle opening (109, 109).

The invention is characterized by the handle opening (109, 109) through which the second wall reaches outside of the folding region and through the folding region.

A device for opening an end region of a bag body, which end region extends between an open tube body end and a bottom central line, having a transporting device, on which the bag body is transportable with adjacent tube walls at a transport rate (V) in a transporting direction, and suction devices arranged on both sides of the bottom central line, which are driven so as to be moveable transversely back and forth to the transporting direction, wherein the suction devices are movable in addition in the transporting direction back and forth. The suction devices are mounted at first articulated joints, wherein at each first articulated joint there are hinged two pivoting arms pivoting relative to one other, wherein each pivoting arm is pivotingly connected to a positioning pivoting arm by means of a second articulated joint and wherein each positioning pivoting arm is movably driven.

A blank used for making a rapidly erected and collapsible container is disclosed. The container is movable between a flat configuration and a box configuration. The blank comprises a primary panel and a secondary panel, which are hingedly coupled to each other. The secondary panel is hingedly coupled to a secondary flap. The secondary flap is hingedly coupled to a terminal portion. The terminal portion is hingedly coupled to a tab. The tab is configured to fold towards the terminal portion. The secondary flap is configured to fold towards the secondary panel. The tab is configured to connect to the primary panel. Embodiments foster a blank used for making a container that rapidly, easily, and conveniently transitions from a flat configuration to being ready for use in a box configuration. Moreover, the container provides speed and efficiency without compromising cost effectiveness and structural integrity.

A bag for containing powdery or granular material having a tubular outer wall made of a flexible material and a closing and opening system arranged at one end of the tubular outer wall, as seen in a longitudinal direction of the bag, the closing and opening system including a pair of opposite angle folds extending longitudinally in line with the wall and folded laterally toward the interior of the bag, a pair of opposite lateral flaps extending longitudinally in line with the wall and folded transversely toward the interior of the bag, overlapping the angle folds in the longitudinal direction, where each lateral flap is attached to the two angle folds that it overlaps, the closing and opening system further including a bottom strip that is removably attached over the angle folds and the lateral flaps in the longitudinal direction, being oriented in the lateral direction so as to close the bag, where the bottom strip can be torn off entirely from the rest of the bag in order to open the bag, and includes a gripping tab which is not attached to the rest of the bag and which is located at one of the lateral ends of the bottom strip, adjacent to one of the angle folds, such that the gripping tab can be gripped and pulled in a direction away from the angle fold, so as to progressively tear off the bottom strip in the lateral direction.

A method of producing flexible polypropylene fabric bags with heat fused seams comprising providing fabric pieces, wherein each fabric piece has a coated side and an uncoated side; positioning fabric pieces so that a coated side of one fabric piece faces a coated side of another fabric piece; selecting an area of fabric to be joined for forming a seam or joint; applying heat to the area to be joined that is less than the melting point of the fabrics, for forming one or more seams or joints and wherein the heat fused seams or joints of a resulting polypropylene bag retains at least 85% of the fabric strength without using sewing machines.

A transport device of the device for the production of bags from pieces of tube transports the pieces of tube. In doing so, the pieces of tube pass through processing for the formation of cross bottoms. A transfer device transfers the pieces of tube consecutively to the transport device so that the rear side edge of one piece of tube is always at a distance from the front side edge of the subsequent piece of tube. Retaining elements are arranged on a transport chain at a defined distance. Depending on the width of the pieces of tube and the defined spacing of the retaining elements, the distance between the pieces of tube is adjusted in such a way that, during the transport of the pieces of tube, the retaining elements always assume the same positions relative to the front side edge of each piece of tube, independently of the width of the pieces of tube.

A system and method of manufacturing reinforced bags having reinforcing elements applied about the bags to support the bags in an opened and/or upstanding configuration. A web of bag material can be fed from a supply and can be folded and secured to form the bags. A series of reinforcing strips can be fed through an adhesive application station for application of an adhesive material thereto in a desired pattern. The reinforcing strips and bags are brought into registration and are adhesively attached to form the reinforced bags.

A system and method for manufacturing a flexible bulk container. The system includes workstations circumferentially spaced apart from each other. Each of the workstations is operable to perform an operation on a preform of the container. The workstations sequentially modify the preform from an initial version to a final version, the final version of the preform being the manufactured flexible bulk container. A preform manipulation apparatus includes a carrousel disposed centrally and being rotatable about a vertical central axis. Manipulation arms are mounted to the carrousel for common rotation therewith. The manipulation arms each have a proximal end fixed to the carrousel and a distal end having a manipulation tool mounted thereto for seizing and manipulating the preform at each of the workstations. Each of the manipulation arms in operation displaces the manipulation tool and the preform between successive workstations.

A method of producing flexible polypropylene fabric bags with heat fused seams comprising providing fabric pieces, wherein each fabric piece has a coated side and an uncoated side; positioning fabric pieces so that a coated side of one fabric piece faces a coated side of another fabric piece; selecting an area of fabric to be joined for forming a seam or joint; applying heat to the area to be joined that is less than the melting point of the fabrics, for forming one or more seams or joints and wherein the heat fused seams or joints of a resulting polypropylene bag retains at least 85% of the fabric strength without using sewing machines.