Abstract: A description is given of a sealing slide fastener (10), comprising two tapes (1, 2) of elastic material with their edges (1b, 2b) facing each other, which are pressed against each other by the coupling of two sets of aligned teeth (3, 4) caused by the passage of a closing slider (8), in which at least the outer layers (1e, 2e) of the said two tapes (1, 2) and the said teeth (3, 4) are made from materials which can be welded together chemically.

Abstract: A description is given of a sealing slide fastener (10), comprising two tapes (1, 2) of elastic material with their edges (1b, 2b) facing each other, which are pressed against each other by the coupling of two sets of aligned teeth (3, 4) caused by the passage of a closing slider (8), in which at least the outer layers (1e, 2e) of the said two tapes (1, 2) and the said teeth (3, 4) are made from materials which can be welded together chemically.

Abstract: A slider for zip fasteners with two tabs, includes a hollow body in which are positioned members designed in such a way that, when either one of the two tabs is pulled, this causes the disengagement of a pawl from the teeth of a fastener, overcoming the resistance of elastic elements which keep the pawl inserted between the teeth. In the slider, the members include a fork provided with two prongs positioned on opposite sides of the plane of the teeth and pivoted at a point of the slider in such a way that it can rotate in a plane perpendicular to the plane of the teeth when a force is exerted on at least one of its prongs by the tab connected to it by its ring.

Abstract: A slider for zip fasteners with two tabs, includes a hollow body in which are positioned members designed in such a way that, when either one of the two tabs is pulled, this causes the disengagement of a pawl from the teeth of a fastener, overcoming the resistance of elastic elements which keep the pawl inserted between the teeth. In the slider, the members include a fork provided with two prongs positioned on opposite sides of the plane of the teeth and pivoted at a point of the slider in such a way that it can rotate in a plane perpendicular to the plane of the teeth when a force is exerted on at least one of its prongs by the tab connected to it by its ring.

Abstract: A slider (1) for zip fasteners with two tabs (2, 3), comprising a hollow body (4) in which are positioned structure (10, 5, 6) designed in such a way that, when either one of the two tabs (2, 3) is pulled, this causes the disengagement of a pawl (7) from the teeth (Zi) of a fastener, overcoming the resistance of elastic structure (8, 9) which keep the pawl inserted between the teeth (Zi). In the slider (1) a fork (10) is provided with two prongs (5, 6) positioned on opposite sides of the plane (?) of the teeth (Zi) and pivoted at a point (P, Q) of the slider (1) in such a way that it can rotate in a plane (?) perpendicular to the plane (?) of the teeth (Zi) when a force is exerted on at least one (6) of its prongs (5, 6) by the tab (3) connected to it by its ring (3a).

Abstract: A slider for a zip fastener with two tabs, includes a hollow body in which are housed two levers positioned on opposite sides of the teeth of the fastener, one of the two levers, provided with a pawl for insertion between the teeth to lock the slider, being operable by acting on either one of the tabs to overcome the resistance of an elastic element positioned within the hollow body which keeps the pawl inserted between the teeth. The elastic element includes an elastically flexible strip, having one end fixed to the lever provided with the pawl, the strip facing an internal wall of the hollow body in such a way that it is interposed between the body and this lever and its elastic resistance opposes a movement of the lever which causes the extraction of the pawl from the teeth.

Abstract: What is described is a slider (1) for zip fasteners with two tabs (2, 3), comprising a hollow body (4) in which are positioned means (10, 5, 6) designed in such a way that, when either one of the said two tabs (2, 3) is pulled, this causes the disengagement of a pawl (7) from the teeth (Zi) of a fastener, overcoming the resistance of elastic means (8, 9) which keep the pawl inserted between the said teeth (Zi). In the slider (1) according to the invention, the said means consist of a fork (10) provided with two prongs (5, 6) positioned on opposite sides of the plane (?) of the teeth (Zi) and pivoted at a point (P, Q) of the slider (1) in such a way that it can rotate in a plane (?) perpendicular to the said plane (?) of the teeth (Zi) when a force is exerted on at least one (6) of its prongs (5, 6) by means of the tab (3) connected to it by its ring (3a).

Abstract: A description is given of a slider (1) with two pull tabs (2, 3) arranged symmetrically with respect to each other and each provided with a ring (2a, 3a), the slider comprising a hollow body (4) containing an escapement (5), the pawl (6) of which is designed to be inserted between the teeth of the zip in order to prevent movements between the zip and the slider (1), the escapement (5) being provided with elastic means (7) which keep its pawl (6) inserted between the teeth until it is disengaged by one or other of the pull tabs (2, 3).