An assembly for the automated production of conical paper sleeves for plants uses paper stock precut in a trapezoid configuration which is continuously fed to the assembly. The precut sheets are folded diagonally twice to form a conical sleeve. The folding process includes application of an adhesive on the overlap of the folded sides to securely seal the sleeve. The precut sheets are transported along the assembly via a series of belts, rollers and electrical motors. The synchronization of the folding process and the application of adhesive is electronically monitored and controlled.

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 high-speed cornet bending machine with high production capacity and mechanically independent motion control system is provided. At least one feeding device is provided for transferring the sheets in order to the conveying device. Feeding device motors are provided for driving the feeding device. Conveying devices include a transfer line for transferring the sheets from the transport apparatus to the end bending unit as standard and end bending units for standard bending the product ends into a high production capacity and mechanically independent movement control system.

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 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.

A forming station for forming pairs of three side seal pouches including a shaped outer top surface and an inner forming slot. The inner forming slot has an upper portion extending from an upper entry edge, and a transition portion. The inner forming slot may further include a lower portion.

The invention discloses a packaging bag and an apparatus and a method for manufacturing film material of the packaging bag, and a method of manufacturing the packaging bag. The processing of the portable portion is conducted by the apparatus for manufacturing film material, and the prepared film material is made into a packaging bag finally. In the technical solution of the invention, by adding a handle structure on the side portion of the big-sized packaging bag, the bag structure of the invention is easy to carry or move the packaging bag and the product within the packaging bag that is large in weight, structure, and size. The packaging bag of the present invention has a simple structure, which is convenient to use and process, improving the practicality and usability of the bag.

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.

A flexible side-gusseted package and methods of making the same are disclosed. The package has a central longitudinal axis, a front panel, a back panel, and a pair of gusseted side panels. The front panel is secured to the gusseted side panels along a pair of side seal lines. The back panel is secured to the gusseted side panels along a pair of side seal lines. Each of the seal lines includes a pair of end portions and an intermediate portion. The intermediate portion, e.g., a concave recessed portion, of each side seal line is located closer to the central longitudinal axis than the end portions of the side seal lines to provide a package which is somewhat necked-down at its middle, to facilitate grasping of the package by users.

A machine for making packages containing liquid or creamy products includes stations for punching/forming a first blank defining upper, lower and rear faces of the open package. A punching and creasing station forms a second blank defining first and second lateral faces of the package. The second blank has a notch for partial transversal separation between the first and second lateral faces. A station for assembling the first blank with the second blank for opening/closing the package with the notch of the two lateral faces, arranged in a V, to form an edge of the package. A transport unit is movable along a feed direction and configured to receive the package from the assembly station. A station opens the edge and fills the package with a dose of the product fed through the open notch. A station seals the notch.