초록 ▼

A screening screen assembly for a vibratory screening machine including an apertured plate, and a bonded subassembly of an undulating support screen and fine screening screen and finer screening screen bonded to each other by a fused plastic grid and bonded to the apertured plate. A method of fabric

A screening screen assembly for a vibratory screening machine including an apertured plate, and a bonded subassembly of an undulating support screen and fine screening screen and finer screening screen bonded to each other by a fused plastic grid and bonded to the apertured plate. A method of fabricating a screening screen assembly for a vibratory screening machine including the steps of providing a support screen, superimposing a plastic grid onto the support screen, superimposing a finer screening screen onto the fine screening screen, applying heat and pressure to the superimposed screens to fuse the plastic grid and thereby form a flat bonded laminate subassembly by causing the fused plastic grid to permeate the fine screen and the finer screen and the support screen, forming the bonded laminate subassembly into an undulating shape, providing an apertured plate, and bonding the undulating bonded subassembly to the apertured plate.

대표청구항 ▼

[ What is claimed is:] [1.] A screening screen assembly for screening material in a vibratory screening machine comprising a substantially planar apertured plate, an undulating subassembly of a fine screening screen and a support screen, said undulating subassembly including alternating ridges and t

[ What is claimed is:] [1.] A screening screen assembly for screening material in a vibratory screening machine comprising a substantially planar apertured plate, an undulating subassembly of a fine screening screen and a support screen, said undulating subassembly including alternating ridges and troughs, said fine screening screen being bonded in contiguous relationship to said support screen by areas of fused plastic with unobstructed portions of said contiguous screens therebetween, said fused plastic extending substantially symmetrically across said ridges and including at least portions extending substantially perpendicularly to the length dimension of said ridges, and said subassembly being bonded to said apertured plate to form said screen assembly.