Abstract:
A machine for automatically filling plastic bags with liquid or particulate material moves a continuous web of such bags through a number of serially positioned work stations. The bags are completely sealed when they enter the machine. As each bag passes through a slitting work station, a specially shaped opening is cut into the bag near an end of it which will become its top. When the bag proceeds to a filling work station, it is held vertically and a specially shaped fill nozzle is moved downward and rotated for entry into the bag through the slit opening. A valve is provided within the fill nozzle for controlling entry of the material into the bag. The valve and fill nozzle are cooperatively controlled by a single mechanism. The bags are transported through the various work stations by a positive toothed belt drive that preferably holds the bags flat until the filling station, wherein the belts are then moveable toward and away from each other in order to allow filling of the bag. After filling, the bag opening is then sealed. The various techniques are especially useful for aseptic packaging of foods, such as milk and wine. Fitments for later use in removing material can also be added to the bag in another work station. The bags and fitments are structured and carried in a way to cooperate with the machine.
Abstract:
Flexible plastic bags used for the bulk storage and dispensing of fluids are often blocked from dispensing all the contents and/or entrap part of the contents in folds of the plastic as they shrink during dispensing. The invention is for a tongue or dip tube that is attached to the inner wall of the plastic bag near the location of the dispensing aperture. The tongue is formed of a laminate of two dissimilar materials, one non-hygroscopic and the other being hygroscopic, so that upon introduction of moisture into the bag, the hygroscopic layer will expand and the normally flat tongue will curl to form a thick tube that both prevents collapse of the bag and prevents closure of the dispensing aperture by the opposite wall of the bag.
Abstract:
Self-closing fluid dispensing valves particularly for use with soft flexible fluid containers. The valves include a tubular outer housing having one end attached to the fluid container and an inner coaxial tubular barrel which may be rotated to align fluid dispensing holes in both housing and barrel. Tabs extending from both housing and barrel permit "two-finger" opening of the valves against spring forces that operate to automatically close the valves.
Abstract:
A flexible container and a method of manufacturing the same where a spout or fitment is attached to the outside of the flexible container. The flexible container includes a patch having at least a portion of the patch overlapping an opening of the flexible container. The fitment is attached to the outside of the sidewall of the container and the portion of the patch which overlaps the opening of the flexible container. The fitment includes a flange with a bottom surface having sealing beads. The sealing beads can be bonded to the outside of the sidewall of the container and/or the portion of the patch which overlaps the opening of the flexible container.
Abstract:
A quick-disconnect fluid coupling is provided that includes a spout assembly comprising a spout fitment having a first fluid opening and a spout valve member having a second fluid opening and capable of rotating from a first position to a second position to form a spout fluid path between the first and second fluid openings. The fluid coupling also includes a service-line connector comprising a line fitment member including a third fluid opening, and a connector valve member having a fourth fluid opening and capable of rotating from a third position to a fourth position to form a connector fluid path between the third and fourth fluid openings, whereby a spout-connector fluid path is formed between the second and fourth fluid openings upon attachment of the service-line connector to the spout assembly. The connector valve member further includes an engagement mechanism for engaging with the spout valve member in a manner that rotation of the connector valve member for coupling in series the spout and connector fluid paths by way of the spout-connector fluid path to form a substantially straight fluid path.
Abstract:
A dispenser includes a spout attached to a fluid-filled bag and a socket that is removable attached to the spout. Valves in each of the spout and socket are biased closed but are opened when the socket is latched onto the spout, thereby providing a fluid path from within the bag to the outside. Keying components are provided on each of the spout and socket in order that a fluid connection between them is made only when the key elements match. The valve within the spout extends into the bag when opened and may include a sharp bag wall piercing portion.
Abstract:
In a bag-in-box fluid dispensing system including a bag fitment sealed over an opening in the fluid bag, a normally closed valved intermediate element sealed in the bag fitment, and a normally closed valved dispenser removably coupled to the valved intermediate element, the intercoupling of the intermediate element and the valved dispenser causing the valves in each unit to open for the passage of fluid from the fluid bag, an improved intermediate element having but two components, the improved element including a housing having a long skirt for passing through the bag fitment and into the fluid bag to prevent blocking of the bag opening, a valve set formed by the deformation of a circular opening in the end of the housing, and a normally closed axially movable valve member for mating with the valve seat and having a valve spring bias provided by the deformation of a novel hemispherical resilient member latched in the bore of the housing.
Abstract:
A web of plastic bags is made from rollstock of a strong heat sealable plastic material for the bulk storage and dispensing of liquids by passing two aseptic sheets of the material into a press that heat bonds the longitudinal edges and laterally across the sheets to form a web of sealed bags. The longitudinally bonded strips are perforated to engage sprocket wheels which draw the web of bags to a position at which a dispensing fitment is bonded to the outer surface of one sheet, and then to a station which cuts a short lateral slit across only one sheet. The web then passes over and hangs from the sprocket so that the slit slightly opens to permit filling of the bag from the bottom up with a long pointed diving fill tube that isolates the bag contents from the slit. The area around the slit is then heat sealed against the opposite side of the bag to prevent leakage of the bag contents and the admission of contaminants into the bag.
Abstract:
A two-piece dispenser for flexible plastic fluid-containing bags. An outer tubular sleeve has a flange attached to the sealed fluid-containing bag. The bore of the sleeve has two annular grooves, one adjacent the bag surface, the other with a semicircular cross-section and displaced within the bore from the first groove. The second piece is a coaxial barrel having sharp piercing points on a plurality of long, flexible blades, at least one of which carries a tooth extending radially from the surface for engaging the annular grooves. In the first or semicircular cross-sectioned groove, the tooth operates to strongly resist longitudinal movement of the barrel so that it cannot be accidentally removed or moved inward to pierce the bag. For dispensing, the barrel is forcibly pushed in to dislodge the tooth from the first groove, cause the blade tips to pierce the fluid-containing bag, and latch the tooth into the second groove to prevent any removal of the barrel from the sleeve.The invention also includes a removable assembly for remote dispensing of the fluid. This assembly pierces the bag, expands a ring of small balls into the first annular groove for temporarily locking the assembly and then can be removed by retracting the balls from the annular groove.