Multi-layer bag for bulk material, comprising at least one layer of material comprising paper or paper-like material, wherein two layers of material are formed by pieces of tube (22, 32) inserted telescopically in one another, wherein a first of the pieces of tube (22) inserted telescopically in one another has at one end (27) an overhang (U1) with respect to a second of the pieces of tube (32) inserted telescopically in one another.

The present invention provides a disposable bioprocess bag, a manufacturing method therefor and a hot-melt annular welding machine, relating to the technical field of biopharmaceutics. The manufacturing method comprises: preparing a first cropping template to a fourth cropping template according to a top, an upper portion, a lower portion and a bottom of a bioreactor; cropping a raw material film according to the first cropping template to the fourth cropping template to obtain a first membrane material to a fourth membrane material, wherein the fourth membrane material directly serves as a rounded bottom; welding at least two pockets on the first membrane material to obtain a rounded top; welding the second membrane material to obtain a cylindrical upper portion; welding the third membrane material to obtain a lower portion in the shape of an inverted rounded truncated cone; and welding, using a hot-melt annular welding machine, the rounded top, the cylindrical upper part, the lower portion in the shape of an inverted rounded truncated cone and the rounded bottom, to obtain a disposable bioprocess bag. According to the present invention, the physical properties of the welded edge of the disposable bioprocess bag are improved, and the fit of the disposable bioprocess bag to the bioreactor are also enhanced.

A plastic bag includes a sealed region. The sealed region is formed along part or whole of an edge of the plastic bag by a section in which at least two plastic films are sealed to each other. The edge of the plastic bag includes a sealed edge of the sealed region. A method for making the plastic bag includes heat-sealing the films to each other to form the sealed region. The method further includes cutting the films such that part or whole of the sealed edge is formed by a cut edge. The method further includes heating an area formed by the cut edge of the sealed edge to smooth the area.

A sterile packaging container that can smoothly and repeatedly accommodate housed medicine without increasing the risk of contamination includes a front side film, and a back side film. An opening is formed on one side, and two sides and a bottom are heat sealed. The front side film is a non-breathable film with a strip of breathable sterile paper interposed and extending in the width direction. The backside film is composed of a non-breathable film. In the front side film, the vertical edges of the non-breathable film and the vertical edges of the breathable sterile paper have a structure in which they are heat-sealed to each other. All contact parts of the non-breathable film and the breathable sterile paper are heat sealed.

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.

The subject disclosure relates to a plastic envelope suitable for mail automation processing. In an aspect, disclosed is an envelope apparatus having a first side portion, a second side portion, a bottom portion, an opening portion, and a foldable flap portion. In an aspect, the apparatus can have a first side portion comprising a first attached portion between a first transparent sheet and a second transparent sheet. Furthermore, the apparatus can have a second side portion comprising a second attached portion between the first transparent sheet and the second transparent sheet.

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.

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.