Open pin-bags for rotating drum screens sorting waste, those that are disposed radially on the inner surface of the screen drum, characterized in that the aforementioned open-bag pin is a metal plate whose shape is that of a rectangle trapezoid, which has on its side of greater length, which is parallel to another side of said rectangle trapezoid, a triangular wedge projected in the direction of rotation of the drum and located in such a way that one of the vertices of the triangular wedge it coincides with the vertex of the rectangle trapezoid formed by said longer side and an oblique side of the right trapezoid, and because the pouch-opening spike is joined to the inside face of the drum perpendicular to its two parallel sides. (Machine-translation by Google Translate, not legally binding)
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