Abstract: A drainable ostomy pouch includes a collection portion and a drain chute extending from the collection portion having a discharge opening for permitting emptying of contents from the pouch. The drain chute is foldable between an open condition in which the drain chute is extended from the collection portion, and a closed condition in which the drain chute is folded towards the collection portion; and a pocket for receiving at least a portion of the drain chute when the drain chute is in its closed condition.

Abstract: A gastight valve strip for a reclosable container. The valve strip includes opposing first and second film layers adapted to be disposed over a container aperture through a sidewall of the reclosable container. The first film layer is attached to the second film layer by a first thermal seal disposed around the periphery of the first film layer. An attachment surface of the second film layer is adapted to be sealed to the sidewall of the reclosable container. Opposing surfaces of the first and second film layers form a substantially gastight seal therebetween upon contact of the film layers. Offset first film layer and second film layer apertures extend through the first and second film layers, respectively, the first film layer aperture being in fluid communication with an exterior side of the valve strip and the second film layer aperture being configured to be in fluid communication with the container aperture.

Abstract: A cut hole type air lock valve is disposed in an air chamber formed by allowing two outer films to be adhered to each other by means of hot sealing. A part of rims of both inner films folded together are adhered to each other and several portions of rims thereof are formed to be air inlets in the cut hole type air lock valve. Furthermore, the air inlet is connected to an air passageway between the inner films, and at least one cut hole is disposed on the inner films beside the air passageway. When outside air flows into the air passageway via the air inlet and is filled in an air chamber via the cut holes, the air chamber is caused to fill with air and inflate, and air inside air chamber thrusts the inner films so as to block the air passageway to cause the air to be locked.

Abstract: An apparatus and method for the automated manufacture of self-sealing inflatable dunnage bags includes a bag making machine. The bag making machine includes a plurality of sheet roll spindles and a plurality of heat sealing rollers. A first bag sheet roll is retained on a first bag spindle. A second bag sheet roll is retained on a second bag spindle. A strip bag sheet roll is retained on a strip spindle. A plurality of first openings are formed through the first bag sheet. A plurality of second openings are formed through the strip bag sheet. Each edge of the strip bag sheet is heat sealed to the first bag sheet with a first roller. A first bag roller seals an end partition across the first and second bag sheets. The edges of the first and second bag sheet are heat sealed to each other with a second bag roller.

Abstract: An inflatable pneumatic bag is disclosed. An inflatable pneumatic bag includes a pneumatic hole disposed at one end of a pneumatic channel. Air, which is applied to the pneumatic hole, moves along the pneumatic channel, then through air ingress holes covered with inner layers which are removed by the expansion of the outer layers to fill all the air tubes. When the air tube is filled with air, one or more inner layers cover and then close the air ingress hole to overcome reverse air flow. Then, a curve-shaped air passage in the air tube narrows to further prevent air escape. With the inner layer, effectively overcoming reverse air flow, and the air passage, further preventing air escape, the inflatable pneumatic bag filled with air may last for a substantial long period of time.

Abstract: A bubble wrapping sheet has a simple structure and can easily inflate all of the air bubbles to wrap a product to be protected. The air bubbles can be constructed by tube partition seals that create air tubes and by bubble partition seals that divide the air tubes into a plurality of series connected air bubbles. The shape and size of the tube partition seals and bubble partition seals can be modified to change the shape of air bubbles and the density of the air bubbles on the bubble wrapping sheet. A check valve for the bubble wrapping sheet is provided to each air tube. The check valve may be configured by an air flow maze portion having a zig-zag air passage and a common air duct portion which provides the air to the air flow maze portion of a current air tube as well as to the air flow maze portion of a next air tube.

Abstract: An air valve for a poly bag that permits the escape of air from the bag as it is filled by a filling tube. The air valve consists of a plurality of slitted openings in one top corner of the bag and a valve flap mounted in the poly bag near the slitted openings that closes and seals the openings as filling material engages and moves the flap.

Abstract: A one-way valve is formed by connecting a third layer of a polymeric film to one of two film layers that are sealed about the perimeter to form an inflatable member. A series of spaced seals connect the third layer so as to form a serpentine flow path across the inflatable member. The serpentine flow path communicates at one end with an inlet and at an opposite end with an outlet in communication with an interior of the inflatable member. Inflation pressure within the inflatable member forces together the adjacent film layers forming the one-way valve so as to maintain the inflatable member in an inflated state.

Abstract: A sealed enclosure is provided with a valve at least part of which extends inside the enclosure and is formed between two flexible sheets extending between two opposed edges of the enclosure and being connected along two non-converging connection lines to define therebetween a duct upon spacing apart the flexible sheets from one another to allow the passage of a fluid between the inside and the outside of the enclosure. The sheets are arranged to be applied against one another upon ceasing of the application thereto of a force tending to hold them apart, thus preventing said fluid from leaving the enclosure. The sheets are sealingly connected to one another with each of the non-converging connection lines forming said duct at the opposite edges of the enclosure, the edges of the sheets adjacent to the inlet end of the duct being sealingly connected to the wall of the enclosure.

Abstract: This leaktight container includes four superimposed sheets (1, 2, 3, 4). The sheet (1) includes a precut tab (5) welded (13) to a portion of the sheet (2). A passage (10) is formed between these sheets (2) and (3) and acts as a valve between the inside and the outside of the leaktight container formed between the sheets (1, 4). A cut (9a) in the sheets (2, 3) allows the passage (10) to be placed in communication with the inside of the container formed between the sheets (1, 4). By pulling the tab (5) the wall of the passage (10) formed by the sheet (2) is torn and this passage is placed in communication with the outside.

Abstract: A method for forming a discharge channel (6) in a flexible packaging during the manufacture thereof. The channel is adjacent to at least one of the edges of the packaging and extends from one end to the other of said packaging. At least one of the channel ends is sealed and in internal communication with the main compartment while the other may be opened for pouring. According to the method, a strip-like partition is inserted between the two side walls of the packaging and at least one longitudinal mid-portion (13) of the strip constitutes said partition and has evenly spaced communicating means (8) arranged above the bottom seal (10) of the packaging, and each side wall of the packaging is sealed to one edge of the partition. Alternative embodiments of such a packaging are also disclosed.

Abstract: The invention relates to a foil sachet (1) with at least one chamber (7) consisting of an upper and lower foil (2, 3) secured together by a closed seam (5, 6). In order to fill the chambers (7) with a substance, especially air, there is a channel (10, 14) having channel sections (14) opening in the region of a seam (5, 6) and preferably in the region of the corner of the chamber concerned where there is an aperture in said chamber. There are preferably a main (10) and a subsidiary channel (14), wherein the main channel may also run outside the foil sachet (1).

Abstract: A packaging bag, in particular for cooked ham, made of thermoweldable material and provided, on at least one of its walls, with a drainage hole. The inside of the bag also includes a drainage valve secured at the wall of the bag. The drainage valve comprises a disc of a plastic material, and is provided with a plurality of radial, spaced ribs projecting from its surface. The ribs face the internal surface of the wall of the bag, and the wall is secured to the ribs by thermowelding. The center zone of the disc will match with the center zone of the drainage hole.

Abstract: A one layer self-sealing, self-regulating, two-way flat valve for fluid containers, such as toy balloons and the like formed of two heat sealed film layers, is provided. The container having two container film layers joined at the perimeters thereof, an exterior opening in one of the layers, and a valve film layer attached to an inner surface of the same container layer. The valve film layer forms an integral fluid channel through which fluid is guided into the container from the exterior opening such that as the container attains maximum fluid capacity, the fluid channel automatically collapses. Perpendicular creases which form along the container surfaces cross the fluid channel to effectively seal the container.

Abstract: A container (10) of flexible material comprises a wall (16) having a row of serrations (18) therein extending diagonally of a corner thereof and an internal sheet (19) which is adhesively secured to an inner surface of the wall (16) by peelable pressure sensitive adhesive (20) and by upper and lower seals (13,14) to provide the container (10) with a tamper evident airtight closure.