Patent ID: 6936121

Claim:
Method of sealing the join between two tapes ( 2 , 3 ) to which teeth ( 4 , 5 ) of a waterproof zip ( 1 ) are attached and two edges of a garment composed of a first or waterproof layer ( 7 ) and a second or fabric layer ( 8 ), these layers being superimposed on each other, which method is characterized in that it comprises the following steps: a) applying, to a first side ( 2 e , 3 e ) of each of the said two tapes ( 2 , 3 ), a strip ( 9 ) of heat-weldable textile material attached to it by at least one weld line (L) formed along a longitudinal line, in such a way that each strip ( 9 ) comprises a first unattached flap ( 9 f ) and a second unattached flap ( 9 s ), one on each side of the said weld line (L) and both parallel to the lines of teeth ( 4 , 5 ) of the zip ( 1 ); b) welding the edge of the said first or waterproof layer ( 7 ) to one face of the flap ( 9 s ) furthest from the teeth ( 4 , 5 ) of the zip ( 1 ); c) attaching the edge of the said second layer ( 8 ) to the second side ( 2 i , 3 i ) of each of the said tapes ( 2 , 3 ) by means of a seam (K) in an area (Z) situated between the said weld line (L) and the zip ( 1 ); d) folding down the flap ( 9 f ) nearest to the teeth ( 4 , 5 ) of the zip ( 1 ) so that it lies parallel against the said first side ( 2 e , 3 e ) of the corresponding tape ( 2 , 3 ) and entirely covers the said area (Z); and e) forming another weld (N) that hermetically joins the outline of the outer edges of the flap ( 9 f ) to the corresponding tape ( 2 , 3 ) around the said area (Z).