The present disclosure provides a material feeding bag which comprises an inner bag. The inner bag has: an inner bag upper port portion, an inner bag main receiving portion and an inner bag lower port portion. The inner bag upper port portion has an upper port; the inner bag main receiving portion is connected to a lower end of the inner bag upper port portion along an axial direction; the inner bag lower port portion is connected to a lower end of the inner bag main receiving portion along the axial direction and has a lower port for controllable communication with an external hopper entrance. It doe not need to shear the material feeding bag by a scissors when materials is fed, so that it avoids generation of metal debris, and the mating and feeding material operation is fast and simple, and the working environment for an operator is improved.

A flexible storage device for packaging particulate solid substances or liquids, having a bottom and lateral walls defining a storage volume, includes: hanging loops toward the top intended for lifting an assembly including: a flexible external wrapper forming at least the four lateral walls of the storage volume, a flexible tubular internal wrapper secured to the four lateral walls of the external wrapper, dividing the storage volume into five vertical compartments including a central compartment defined by the interior volume of the internal wrapper, and four peripheral compartments defined between the lateral walls of the external wrapper and the lateral walls of the internal wrapper. The internal wrapper has an upper edge defining the upper mouth of the central compartment and a lower edge defining the lower mouth of the central compartment. The upper edge of the internal wrapper is at or below the upper edge of the lateral walls.

The invention is directed to a bag for transporting and handling powdery bulk materials, especially inorganic or organic pigments. Further, the present invention relates to a method for opening the tubular drain of such a bag, as well as to the use of the bag for transporting and handling powdery bulk materials.

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 bottom and discharge assembly for a flexible fabric bulk bag of the type having heat sealed joints includes a piece of reinforcing fabric positioned under a heat sealed joint of a bottom portion and a discharge tube, around a periphery of a discharge tube opening and bottom opening that are each substantially square, wherein the reinforcing fabric prevents bag failure at or about at corners of the bottom opening and discharge tube opening. The assembly can be formed by overlapping the reinforcing fabric, discharge tube, and bottom portion so that the bottom is heat sealed to both a portion of the discharge tube fabric and a portion of the reinforcing fabric and wherein a portion of the reinforcing fabric is under the discharge tube and bottom joint, and wherein the discharge tube fabric and reinforcing fabric are not joined together.

The device relates to transportation and storage of bulk cargoes and comprises a vessel with upper charging opening and lower discharging opening, bearing framework and discharging mechanism, the device being further provided with soft sling load distribution ring, which passes through additional external loops of the main slings and alternately through additional loops along the upper perimeter of the cylinder, which, in turn, are embodied in the form of the load distribution triangle. The device provides improving convenience of handling multi-tonnage bulk cargoes as well as improving container reliability in use.

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 large container for transporting and storing a filling product. The container has a usable space formed by top, bottom, and side walls that are constructed from a plurality of fabric sheets. The portions of the fabric sheets that enclose the usable space are welded together to provide a stitchless usable space. Upper portions of the sidewalls extend upward beyond the usable space to form a hem. Lift loops that enable the large container to be lifted by mechanical means are sewn onto the hem. Thus, the usable space remains stitchless, i.e., without stitch holes, yet the lift loops are stitched to the hem.

A bag material has a tubular shape and can be folded back at an intermediate position in a longitudinal direction. Crushed stones can be stored in a folded part of the back material. An opening on one side of the bag material can be moved to a position close to an opening on the other side of the bag material. A one-side closing rope that closes the opening on the one side of the bag material is provided near this opening. An other-side closing rope that closes the opening on the other side of the bag material is provided near this opening. The other of the one-side closing rope and the other-side closing ropes can be released with the opening closed by one closing rope.

A novel method for manufacturing a cubicle flexible intermediate bulk container is disclosed. At least two opposing sidewalls of the cubicle FIBC has a lower portion and an upper portion, both of which are formed of a combination of sheet material cut in rectangular and trapezoidal geometries.