Patent ID: 8872069
Filing Date: 2014-10-28
Classification: B23K,B29C,B29L,Y10T

Abstract:
1. A method of welding a coupling element to an ostomy bag by transmitting radiation in a predetermined direction at a given wavelength to an interface between the coupling element and the bag, the method comprising: providing an ostomy bag having a first layer, a second layer, and a third layer, the first layer and the second layer being attached to each other along their edges to form a pouch with the third layer positioned inside the pouch between the first and second layers, said third layer having a scattering coefficient, μs>0.4 mm providing the coupling element with a third absorption coefficient in the predetermined direction at the given wavelength, the third absorption coefficient being less than the first and second absorption coefficients; positioning the coupling element so as to abut or be proximate to the first layer of the pouch and so that the radiation penetrates the coupling element, along the predetermined direction, before penetrating into the first layer; and providing radiation along the predetermined direction, said radiation penetrating the coupling element and heating the first layer of the pouch so as to weld the first layer to the coupling element, said radiation, having penetrated the first layer, being scattered by the third layer so that the first layer is not welded to the second layer of the bag.