A bag made of two layers of film material welded together along their edges except at an aperture in which is inserted one end of a tube of the same material as the bag, the entire circumference of said tube being tightly sealed to the sides of the bag aperture by heat welding.
A bag-like liquid container especially intended for medical use is formed from flexible material and includes at least one closable spout for filling or emptying the container, having its center line substantially in the plane of the flat container, the spout being provided with a flange formed integral therewith, said flange being weldably unitable to the container material for providing a completely impervious attachment of the spout to the container as well as a separation of the sides of the container so that liquid flowing into and out of the container is always guaranteed a free passage.
A collapsible container for medical use which has an improved low temperature characteristics and can withstand high temperatures of high-pressure steam sterilization, includes a container main body made by irradiating a hollow molding having a desired shape formed of an ethylene-vinyl acetate copolymer with an electron beam to cross-link the copolymer, thus providing a main body. The main body is completely sealed at its periphery except for a predetermined portion providing a non-sealed portion. The end of a functional accessory for achieving the function of the container for medical use is inserted in the non-sealed part of the main body. The accessory is sealed, at the inserted end, to the main body through an interlayer of a non-cross-linked ethylene-vinyl acetate copolymer.
Method and apparatus for welding two container walls of plastic film (1, 2) to a plastic tube (3) having a substantially circular cross section, wherein the plastic tube (3) is arranged between two parallelly arranged plastic films (1, 2). The two plastic films (1, 2) are made to extend along the outer surface of the plastic tube (3) and to abut each other along a joint face (7) between two welding jaws (5, 6) in an area (8) adjoining the plastic tube (3). The plastic films (1, 2) are welded by means of welding jaws (5, 6) to the outer face of the plastic tube (3) and welded together in the area (8) adjoining the plastic tube (3). The plastic tube (3) is deformed during welding by means of a compressive force applied by the welding jaws (5, (5) to provide the outer surface of the plastic tube (3) with a substantially plane portion (9) extending on both sides of the joint face (7) and substantially perpendicular thereto.
A pouch which is formed to provide an inwardly folded bottom wall to which a discharge fitment is attached so that the weight of the fluidic material within the pouch causes the bottom wall to be extended when the pouch is disposed in a generally vertical configuration to provide a funnel by which all of the contents of the pouch may be discharged.
An ostomy bag having a drain valve at a lower region thereof. The valve is formed of a short flexible tube that can be bent or kinked over a support web and a stopper which can be pushed into the open end of the kinked tube.
