A floor panel having a blade and/or slab shape, being made of a plastic material for producing a floor covering or similar, said panel comprising at least two pairs of opposite sides defining two adjacent edges comprising male coupling means, and two opposite adjacent edges comprising female coupling means, the kinematics of assembling of two adjacent panels being vertical: - the male coupling means comprising at least a so-called proximal groove intended to open onto a bottom face of the panel, and a flexible distal tab intended to extend at one end of a first edge of the panel towards the bottom face of said panel; - the female coupling means comprise at least a proximal groove intended to open on an upper face of the panel and a flexible distal tab intended to extend at an end of a second edge of the panel, towards the upper face of said panel; - the flexible distal tab of the male coupling means has a proximal wall inclined at an angle β relative to a downwardly and outwardly vertical plane; - the flexible tab of the female coupling means has a proximal wall inclined at an angle α relative to an upwardly and outwardly vertical plane; - the flexible distal tab of the female coupling panels has a distal wall comprising, at least, a lug or a notch capable of cooperating with a notch or a lug arranged on a proximal wall of the proximal groove of the corresponding male coupling means of an adjacent panel, to form a stop, preventing any vertical movement of the panel from occurring relative to the adjacent panel, characterised in that - the flexible distal tab of the female coupling means comprises a lower wall comprising a chamfered portion intended to form an angle of between 2° and 20° relative to the main plane of the panel, said chamfered portion providing a reduction in the clipping force and a deformation of the flexible distal tab so that it is easier to assemble two adjacent panels, - the distal wall of the flexible distal tab of the female coupling means comprises an upper portion inclined at an angle of between 1° and 20° relative to the vertical, and a lower portion also inclined at an angle of between 1° and 20° relative to the vertical, the upper and lower portions extending parallel on either side of the notch or of the lug, and - the proximal wall of the proximal groove of the male coupling means comprises an upper portion inclined at an angle of between 1° and 20°, relative to the vertical, and a lower portion inclined at an angle of between 1° and 20° relative to the vertical, the upper and lower portions extending parallel on either side of the lug capable of co-operating with the notch or respectively of the notch capable of co-operating with the lug. - the male coupling means comprising at least a so-called proximal groove intended to open onto a bottom face of the panel, and a flexible distal tab intended to extend at one end of a first edge of the panel towards the bottom face of said panel; - the female coupling means comprise at least a proximal groove intended to open on an upper face of the panel and a flexible distal tab intended to extend at an end of a second edge of the panel, towards the upper face of said panel; - the flexible distal tab of the male coupling means has a proximal wall inclined at an angle β relative to a downwardly and outwardly vertical plane; - the flexible tab of the female coupling means has a proximal wall inclined at an angle α relative to an upwardly and outwardly vertical plane; - the flexible distal tab of the female coupling panels has a distal wall comprising, at least, a lug or a notch capable of cooperating with a notch or a lug arranged on a proximal wall of the proximal groove of the corresponding male coupling means of an adjacent panel, to form a stop, preventing any vertical movement of the panel from occurring relative to the adjacent panel, characterised in that - the flexible distal tab of the female coupling means comprises a lower wall comprising a chamfered portion intended to form an angle of between 2° and 20° relative to the main plane of the panel, said chamfered portion providing a reduction in the clipping force and a deformation of the flexible distal tab so that it is easier to assemble two adjacent panels, - the distal wall of the flexible distal tab of the female coupling means comprises an upper portion inclined at an angle of between 1° and 20° relative to the vertical, and a lower portion also inclined at an angle of between 1° and 20° relative to the vertical, the upper and lower portions extending parallel on either side of the notch or of the lug, and - the proximal wall of the proximal groove of the male coupling means comprises an upper portion inclined at an angle of between 1° and 20°, relative to the vertical, and a lower portion inclined at an angle of between 1° and 20° relative to the vertical, the upper and lower portions extending parallel on either side of the lug capable of co-operating with the notch or respectively of the notch capable of co-operating with the lug.