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震惊! 熔喷 machine this 三 部 parts 决定 口罩 滤效果!
upper 周四, USA FDA table/sheet 示检验67款 China manufacturing production KN95口罩, in pellets efficiency testing in has 60%未 can to most low 95% 滤 standards, its in manufacturing production N95口罩, pellets efficiency low 至24％.
that issues.
口罩 true can will new 冠病毒拒之门 outer 么?
实际 upper, production 熔喷布空隙 versus relatively new 冠病毒 dimensions （0.1μm）而言 need large more, is 病毒无 method 独立存 in, need will 附 病毒飞沫（5μm）拦截 or retardant 挡住就 can 啦!
how to improve/increase 熔喷布 滤效果?
熔喷布并不 is simple retardant 拦病毒, is use electrical 吸附效应 will 病毒吸附 in 熔喷布 upper. 熔喷布自身携 belt/tape property can large in 35%, in 驻极处理 tool electrical 效应之 rear property can improves 至95%. this 时熔喷 machine 主体起 to key/critical property function!
01, 熔喷布 mold （模头）
熔喷 method use filament sheet/plate and other filament formed method different, its filament must formed strip/profile 直线, upper lower 两侧开 has high speed gas 流 喷出槽. method filament 孔 孔径 is 0.15-0.4mm, filament 孔间距0.7mm. let fine 腻填满 has product.
02, plant/unit （换网 device ）
熔喷布 specialized device is textile iron filament or 不锈钢网盘. usually 由几层 different 目数 网构 formed 一组. outer coarse relatively solid, can retardant relatively large pellets 早 进入 inner fine in. inner relatively fine can melt in relatively small solid pellets. if pressure to setting value, extrusion amount obvious decrease/reduce, screw pressure machine force consumption increase large and other 情况, and more 换滤网.
03, amount 泵
function is 精确计 amount, 连续输送熔喷PP material melt to 熔喷模头, generate pressure, ensure melt can 克服组 parts and filament retardant force from filament 头喷出, formed melt fine 流.
