A hermetically-sealing opening dispensing lid made of injected plastic material for a foodstuff package for holding solid, dry powdered or grain products, said lid comprising:
- a frame which is secured to the package, with the package including an opening, and the frame secured at the opening to form a window;
- a movable body hinged at an edge of the frame by a hinge formed of a weakening of a join between said frame and said movable body, which permits pivoting movement of the movable body about the hinge for opening and closing through the window of the frame, said movable body including:
- two lateral walls with a first radius of curvature at upper edges of the lateral walls and a second smaller radius of curvature at lower edges of the lateral walls,
- a closing front wall and
- two joining bridges, including a lower joining bridge which joins bottoms of the lateral walls together, and an upper joining bridge which joins tops of the lateral walls together at rear portions thereof;
- wherein the upper bridge has two parts, a front part closer to the closing front wall, and a rear part further from the closing front wall, the rear part having approximately a constant radius of curvature, and the front part one of:
- has a decreasing radius of curvature and
- is in a decreasing plane;
- wherein the frame is provided with an outer perimeter edge except for a zone in which the hinge is located, in geometrical concordance with an outer edge of the closing front wall of the movable body, so that in a closing position, said closing front wall and said outer edge are flush;
- wherein the frame is provided with a pair of first tabs facing downwards, one at each side of the lower part of an upper side of the frame, acting as an arrangement of retention in concordance with the upper edge of the lateral walls of the movable body, and said first tabs are located in a cutaway portion of the frame and being joined to a top of the cutaway portion;
- retaining elements placed in front and rear zones of the movable body;
- a gripping/pulling flange placed in an outer face of the front wall;
- wherein the upper bridge of the movable body is provided with ribs/elevations having an upper edge provided with a toothed area/rack, said ribs/elevations being placed in parallel with the lateral walls and located at some distance from said respective lateral walls;
- wherein the frame is in turn provided with second tabs which interact with the upper teeth of said ribs/elevations.