embodiment differs from the screen 1 of fig1 in that instead of the projections depressions 7 extending in lateral direction of the screen wire 2 are formed on the facial surface of each screen wire 2 at a predetermined interval these depressions 7 can be formed by for example rotating as shown in fig4 a shape forming wheel 8 which have projections 8a conforming to the shape of the depressions 7 formed on the periphery thereof at the same interval as the interval of the depressions 7 in the direction of arrow a and feeding the screen wire 2 in the direction of arrow b so as to cause the screen wire 2 to be in meshing engagement with the shape forming wheel 8 fig5 is a plan view showing another embodiment of the invention each screen wire 2 of the screen of this embodiment is formed on the facial surface thereof with depressions 7 in the same manner as in the embodiment of fig3 and is additionally formed on the side surface thereof with bulging portions 9 which are formed by bulging out of material of the screen wire 2 on sides of the bottom of the depressions 7 when the shape forming wheel 8 is in meshing engagement with the screen wire 2 since these bulging portions 9 are projecting in the slits 3 a part of a solid such as fiber which has entered the slits 3 is caught by the bulging portions 9 and as a result the ratio of trapping solid by the screen is increased fig6 shows an example of profeed washer in which the screen 1 according to the invention is provided on.