초록 ▼

A screen media (200) for use in screening pulp slurry has a first side (204) and a second side (206). The pulp slurry is fed from the first side of the screen media to the second side of said screen media through a plurality of screening passages (205). Each said screening passage include a contour

A screen media (200) for use in screening pulp slurry has a first side (204) and a second side (206). The pulp slurry is fed from the first side of the screen media to the second side of said screen media through a plurality of screening passages (205). Each said screening passage include a contour cut (210) formed in the first side, a back groove (208) formed in the second side, and a residual thickness (234) between the contour cut and the back groove. An elongate slot (235) is formed in the residual material, and the residual thickness has a substantially uniform thickness about the elongate slot. Where the slot extends completely through the residual material it defines a through-slit (236) through which slurry flows and is filtered.

대표청구항 ▼

[ We claim:] [1.] A screen media for use in screening pulp slurry, the pulp slurry to be screened being fed from a first side of said screen media to a second side of said screen media through a plurality of screening passages, each said screening passage comprising:an inlet contour formed in said f

[ We claim:] [1.] A screen media for use in screening pulp slurry, the pulp slurry to be screened being fed from a first side of said screen media to a second side of said screen media through a plurality of screening passages, each said screening passage comprising:an inlet contour formed in said first side,a back groove formed in said second side, said back groove in alignment with said inlet contour and having a length,a residual material between said inlet contour and said back groove, said residual material having an end thickness at each end that is greater than a middle thickness,a through-slit in said residual material that extends from said inlet contour to said back groove, said through-slit having a length and a width,a material relief disposed in said back groove that extends into said residual material along said through-slit, said material relief having a length that is less than said length of said back groove, and having a width that is wider than said width of said slit, andwherein said residual material has a substantially uniform thickness along said through-slit.