Sheet of non-woven fabric (10, 110, 110 ', 210, 210') extending according to a longitudinal direction (X1) and a lateral direction (Y1) orthogonal to the longitudinal direction (X1), said sheet comprising fabric: - at least one reinforcing zone (20a, 20b, 20c) on which the fibers and / or filaments that make up the fabric sheet are joined according to a reinforcing pattern (22) comprising a plurality of shapes geometric (24), the reinforcement zone extending over the entire length (L) of the sheet of fabric measured in the longitudinal direction (X1), and over a width (l1, l2) strictly less than the width (l) of the fabric sheet measured in the lateral direction (Y1), and - at least one unreinforced area (40), the elongation of the reinforced area (20a, 20b, 20c, 20d) under the effect of the given force exerted in the direction longitudinal (X1) being less than the elongation of the unreinforced area (40), under the effect of the same force, the geometric shapes patterns (24) of the reinforcement pattern (22) being discrete elements, and the geometric shapes (24) of the reinforcement pattern (22) of each reinforcement zone (20a, 20b, 20c, 20d) being placed in such a way that Any straight line (D1) extending in the lateral direction (Y1) of the fabric sheet cuts at least one of said shapes (24).Lámina de tela (10, 110, 110', 210, 210') no tejida que se extiende de acuerdo con una dirección longitudinal (X1) y una dirección lateral (Y1) ortogonal a la dirección longitudinal (X1), comprendiendo dicha lámina de tela: - al menos una zona de refuerzo (20a, 20b, 20c) sobre la que las fibras y/o los filamentos que constituyen la lámina de tela están unidos de acuerdo con un motivo de refuerzo (22) que comprende una pluralidad de formas geométricas (24), extendiéndose la zona de refuerzo sobre toda la longitud (L) de la lámina de tela medida en la dirección longitudinal (X1), y sobre una anchura (l1, l2) estrictamente inferior a la anchura (l) de la lámina de tela medida en
