4214results about "Flexible containers manufacture" patented technology

A container (1) comprising a compartment (4) which is defined by flexible walls and whose volume depends on the relative position of the walls, two opposite side walls (2) being joined along a common connecting portion (5). The container is characterised in that a first gas-filled duct means (11) is arranged in the connecting portion (5) along at least a first side (12) of the container (1). The invention also concerns a method of producing such a container by forming at least one gap in said side walls (2) in connection with the forming of the connecting portion (5) and, in connection with the filling of the container (1), filling each gap with gas and sealing it to form a gas-filled duct (11, 16, 18).

An air-evacuable bag has a one-way valve therein having two layers of valve film, neither of which is the sidewall of the bag. By forming the one-way valve of smooth, double-layered valve film, unwanted air gaps caused by textured surfaces in the sidewalls of the bag are avoided, thereby minimizing air leakage back into an evacuated bag. A method for the manufacture of such air-evacuable bags incorporates a roll supplying a first valve film layer, a roll supplying a first sidewall layer, a roll supplying a second valve film layer, and a roll supplying a second sidewall layer. As the film coming off the first valve film layer roll passes the roll supplying the first sidewall layer, both the sidewall layer and first valve film layer move in close proximity to one another until the valve film is tacked to the first sidewall layer. The second film and second sidewall layer are processed simultaneously in a like manner, and all four layers are joined at a sealing station.

A flexible container is provided for the storage and administration of medical solutions. The container incorporates a transparent front sheet made from a planar layer of a polymer and an opposing rear sheet. The rear sheet is made from a planar laminate layer. The front and rear sheets are sealed together along a common peripheral edge to form a volume enclosure. The volume enclosure is constructed of materials having high oxygen and moisture barrier properties which allows the container thermoplastic to be stored for extended periods of time without degrading the contents. The volume enclosure is then inflated with a pressurized gas to permanently stretch the front and rear sheets outwardly and to thereby increase the volume capacity of the container. An alternative embodiment of the container incorporates multiple compartments, separated by peelable seals, for containing a diluent and a medicament. The seals are ruptured by manipulation of the container to thereby mix the contents together for delivery through standard IV arrangement to a patient.

The present invention relates to a multi-layered composite bag used to store bulk type products such as pet food, seeds, fertilizer, cereals, grains, charcoal, sand, gravel, and other bulk products, including without limitation bulk products intended for human and non-human consumption, and provides a more efficient manufacturing process than using a paper / plastic structure. The present invention provides a bag comprising a middle layer of woven mesh tubing to which an outer layer of solid plastic film is adhered using polypropylene or other polylaminates.

A stand-up packaging pouch manufactured in three-dimensional form or flattened form and provided with at least front face portion and rear face portion sides formed from packaging material having a pleat which is formed by folding a part of the packaging material in a three-fold strip form and adhering the inner faces of this folded part is constituted such that when the pouch is opened out into three dimensions, the pleat, formed in the same plane as the peripheral face portion, is positioned at a substantial right angle to a bottom face portion, thereby concealing the bottom face portion.

The thermal bag (2) is made of thermally insulating composite material folded to form a bottom and welded along lateral borders (3) to form a body (1) of the bag with a mouth (5) at the level of which a handle (7A, 7B) is applied. The composite material defines a bottom folded in an accordion-like fashion opposite the mouth of the bag, and a laminar stiffening element (15) of the accordion-like bottom is disposed inside the bag.

The present invention provides a provides an airtight bag that includes a bag having a mouth and an outer surface. The bag further includes a zippered closure at the mouth, the zippered closure having a first end and a second end, and a first drop on the outer surface of the bag at one of the first end or the second end of the zippered closure.

A package having fluid-filled chambers that form a line of contact that seals the package. The package generally defines an interior cavity accessible through an opening. Opposing portions of the opening may include at least one fluid-filled chamber to seal the package. The chamber may be held in sealing contact with an opposing structure or with each other by fastening means that hold the opposing portions together. In another embodiment, opposing chambers themselves may interlock to maintain sealed contact. The package may include an auxiliary opening so that an end user can fill the package with articles of the user's choice. The auxiliary opening can be sealed at least over a portion of its length. In another embodiment, first and second compartments are isolated by the fluid-filled chamber seal, with the seal being selectively breachable to enable transfer of product from the first to the second compartment.

A method of making a plurality of flexible containers (12 / 112 / 212) comprising the steps of manufacturing a plurality of bag structures (13 / 113 / 213), separately manufacturing a plurality of valves (10 / 110 / 210), aligning the valves (10 / 110 / 210) with openings (24 / 124 / 224) in the bag structures (13 / 113 / 213), and securing the aligned valves (10 / 110 / 210) to the bag structures (13 / 113 / 213). Each valve (10 / 110 / 210) comprises a vent layer (30 / 130 / 230) which is pervious with respect to expected gasses and a sealed passageway is formed between the vent layer (30 / 130 / 230) and the container (12 / 112 / 212) when the valve (10 / 110 / 210) is secured to the bag structure (13 / 113 / 213).

A packaging member (1, 80, 100) is provided with easy-opening means (7, 85, 107, 108) for allowing the packaging member to be opened easily, wherein the easy-opening means is either positionally or structurally improved. As one example, the packaging member is a packaging bag (1, 80), in which the easy-opening means serves as a tearing start point when opened with the use of the easy-opening means. The easy-opening portion is formed at a position slightly shifted inward from a perimeter edge of the packaging bag. As another example, the packaging member is a packaging container (100), in which the easy-opening means is structurally improved.

A method of making a plurality of flexible containers (12 / 112 / 212) comprising the steps of manufacturing a plurality of bag structures (13 / 113 / 213), separately manufacturing a plurality of valves (10 / 110 / 210), aligning the valves (10 / 110 / 210) with openings (24 / 124 / 224) in the bag structures (13 / 113 / 213), and securing the aligned valves (10 / 110 / 210) to the bag structures (13 / 113 / 213). Each valve (10 / 110 / 210) comprises a vent layer (30 / 130 / 230) which is pervious with respect to expected gasses and a sealed passageway is formed between the vent layer (30 / 130 / 230) and the container (12 / 112 / 212) when the valve (10 / 110 / 210) is secured to the bag structure (13 / 113 / 213).

A perforation blade is used for cutting a perforated tear line in a bag to form an easy-open corner portion. The perforation blade includes a base formed to span the corner portion of the bag. The base has a first end adapted to extend to the end edge of the bag proximate a seal line, and a second end adapted to extend to one side edge of the bag. A series of closely spaced perforation teeth are formed with the base, and are adapted to penetrate the first and second walls of the bag to form a corresponding series of perforations at the corner portion of the bag. A starter tooth is formed at the first end of the base, and is adapted to cut a starter nick in a skirt of the bag between the end edge and the proximate seal line. A burst protection gap is formed between the starter tooth and a first of the series of perforation teeth. The burst protection gap is adapted for safely receiving the seal line of the bag to prevent severing the seal line when cutting the perforations.

The present invention provides a recloseable bag, the bag having a mouth and including a closure at the mouth, the closure having a first end and a second end. The recloseable bag also includes a first crushed section at the first end of the closure, the closure further including an intact portion. It also includes a first transition area between the first crushed section and the intact portion, and a sealing material in the first transition area.