FILTERMEDIUM

申请公布号：DE69404830(T2)

申请号：DE1994604830T

申请日期：1994.03.24

申请公布日期：1998.02.26

申请人：

BRITISH UNITED SHOE MACHINERY LTD., LEICESTER, GB

发明人：GREATOREX, ANTHONY THOMAS, SYSTON, LEICESTERSHIRE LE7 8NN, GB

分类号：B01D39/08;B01D46/24;B01D46/52;D04H13/00

主分类号：B01D39/08

摘要：A filtration medium is produced under conditions of heat and pressure such that it has a density in the range 450 to 950 kg/m<3>, a pressure drop in the range 75 to 1250 Pa at an air velocity of 1.6 m/min (as measured by a BS4400 test), and a gauge in the range 0.7 to 1.25 mm. Any suitable thermoplastic fibre may be used, e.g. polyester fibres alone, a blend of polyester and polypropylene fibres, a blend of polyester and bi-component fibres, polyimide fibres and polyphenyl sulphide fibres. Filter units made from such filtration media may be of the flat bag type or a multi-pocketed corrugated element or of any other desired configuration.

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