1340659 Discharge collecting appliances A BRONDBERG 23 June 1972 [30 June 1971] 29597/72 Heading ASR A method of manufacturing a colostomy, ileostomy or ureterostomy bag comprises welding an adhesive disc 2 to the wall 1 of the bag and puncture an entrance opening 10 in the wall and disc simultaneously, the welding being performed in spaced apart areas 4 in an annular zone 5. A welding electrode, Fig. 2 (not shown) consists of an annular welding zone containing a plurality of welding points, and having an inner diameter smaller than the smallest desired diameter, and an outer diameter larger than the largest desired diameter, of the entrance opening 10. The areas 4 may be square or curved.
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