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process for the manufacture of a filter, a half so manufactured, and filters impieganti said means
process for the manufacture of a filter, a half so manufactured, and filters impieganti said means
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机译:过滤器的制造方法,一半制造的过滤器和过滤器
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摘要
A process for manufacturing a filter medium comprises the following operations: preparing in a pulper or beater a pH 3-5 aqueous suspension of cellulose fibres with a concentration of between 3% and 5%; preparing in a pulper or beater a pH 2.8-3.8 aqueous suspension of glass fibres with a fibre concentration of between 0.5% and 1.2%; preparing a first pulp consisting exclusively of cellulose fibres, to which a moisture-resistant resin is added; preparing a second pulp consisting of cellulose fibres and glass fibres in proportions of between 30% and 70%, to which a moisture-resistant resin is added; forming two superposed layers of said pulps by methods used in paper manufacture; collecting said two layers on a layer of material able to absorb water; pressing the two superposed layers of pulp to a pressure of between 0.1 and 1 kg/cm2; drying the resultant sheet to a moisture content of 1%; impregnating the dried material with a 50 wt% solution of acrylic latex; again drying and winding on a reel.
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机译:过滤介质的制造方法包括以下操作:在碎浆机或打浆机中制备浓度为3%至5%的pH 3-5纤维素纤维水悬浮液;在碎浆机或打浆机中制备pH值为2.8-3.8的玻璃纤维水悬浮液,其纤维浓度为0.5%至1.2%;制备仅由纤维素纤维组成的第一纸浆,向其中添加抗湿性树脂;制备第二种纸浆,其由纤维素纤维和玻璃纤维组成,其比例为30%至70%,并向其中添加了防潮树脂;通过造纸中使用的方法形成所述纸浆的两个重叠层;将所述两层收集在能够吸收水的材料层上;将两个重叠的纸浆层压至0.1至1kg / cm 2之间的压力;将所得片材干燥至水分含量为1%;用50重量%的丙烯酸乳胶溶液浸渍干燥的材料;再次干燥并缠绕在卷轴上。
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