| 摘要 |
PROBLEM TO BE SOLVED: To provide a strong vibration type screen mesh which has a large aperture ratio, has excellent wear resistance, has high efficiency of sieve and is hardly damaged by metal pieces. SOLUTION: The sieve net is made by subjecting two or more pieces of transverse wires 11∼23 and two or more pieces of longitudinal wires 24∼28 to crisscross arrangement. Therein, transverse wires 11∼23 are made of hard material such as piano wire and are arranged along the conveyance direction 29 of raw material, and longitudinal wires 24∼28 are made of soft material having elasticity such as urethane rubber. Therefore, by the use of the hard material, the aperture ratio and wear resistivity is enhanced, the probability of breakage is reduced due to a decrease in the use of the soft material and the sieve efficiency is improved. COPYRIGHT: (C)2004,JPO
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