GB1027288A - Bag and method of making same - Google Patents

Abstract

1,027,288. Making bags with nozzles. ABBOTT LABORATORIES. Feb. 26, 1963 [July 23, 1962], No. 7738/63. Heading B5D. [Also in Division A5] A continuous method of making bags, particularly for the collection, storage and administration of parenteral liquids, comprises the steps of securing port assemblies at spaced intervals along the medial portion of a flexible web, folding the web along the medial portion and sealing the folded web portions together to form sealed chambers, each having one or more port assemblies along a transverse edge. Part assemblies 36, 37, disposed along the folded edge of the bag for the connection through a piercing needle 80 to a fluid administration set 81, 82, 83, 84 or a tube interconnecting two bags, each comprise a tube 42 (Fig. 7, not shown) and a flange 43, having a pair of ribbed enlarged portions 44, 45, which is sealed to the bag so that the enlarged portions extend along opposite sides of the bag to hold them spaced apart and form finger shields. The portion of the bag wall extending across the tube 42 forms a pierceable diaphragm 25c (Fig. 7, not shown), which is restrained against outward flexure by an inwardly projecting member 61a of a closure cap 61. The cap has a flange 62 which is held against the port flange 53 by an apertured flange 51 of a hanger strip 46 (Fig. 4, not shown). The hanger strip extends between the port assemblies, the flanges 51 being sealed around their peripheries to the port flanges 43. The closure is removed by forcing its flange from beneath the hanger flange. Alternatively, the closure flange is sealed to the port flange and the cap is removed by rupturing a line of weakness between the closure cap and the flange. A port assembly 38 (Fig. 5, not shown) comprises a tube 39 having a ribbed flange 40 which is sealed to the bag. The tube 39 receives one end of a tube 41 which is used in filling the bag and may have a piercing needle at the other end for connection to another bag. The end of the tube in the bag has a closure member 64 in the form of a ball or plug manipulable through the bag wall. The folded edge 26 of the bag may be disposed at an angle other than a right angle to the two adjacent sealed side edges 28, 29. The bag may be suspended with the port assemblies at the bottom by one or more hanger holes 33, 34, 35 which may be disposed at different levels so that the bag may be tilted as desired. The hanger portions 46a, 46b of the hanger strip 46 may be of different lengths (Fig. 19, not shown), so that when they are each placed over a hook the bag is tilted. Alternatively, hanger tabs (Fig. 20, not shown) may be connected to the bag between the port assemblies or holes may be formed in the sealed edges adjacent the folded edge (Fig. 21, not shown). The bags are made continuously from a flexible web 151 (Fig. 22) on a roll 150. The web is washed in a tank 155 and after being squeezed between rollers 157, 158 passes to a station 159 where the port assemblies including hangers are dielectrically sealed along its medial portion. The web is then passed to a heated drying station 162. After folding the web along its medial portion at a station 164, opposed portions of the web are sealed to one another transversely of the web and along its free edges to form individual interconnected bags at a sealing station 168 (Fig. 22b). The bags are then partially severed from one another at a station 177 and filled with anticoagulant at a station 179, the closures 64 and tubes 41 being subsequently applied. Alternatively, the partially connected bags are wound on a roll 184 for storage. The bags and port assemblies may be made of polyvinyl chloride and the closures for the port assemblies may be made of polypropylene, nylon, vinyl plastics, polycarbonate or polyethylene.