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    • 7. 发明公开
    • VERFAHREN ZUR HERSTELLUNG VON FASERZEMENT-PLATTEN
    • 用于生产纤维水泥木板
    • EP1089857A1
    • 2001-04-11
    • EP99926188.6
    • 1999-06-17
    • Voith Sulzer Papiermaschinen AG
    • STUBHAN, JosefFILIPITS, Adam
    • B28B1/42B28B1/52
    • B28B1/42B28B1/527B28B17/0072
    • The invention relates to a method and a device for producing fibre cement panels or moulded bodies or such like. The method provided for by the invention comprises the following steps: production of a fibre suspension from a binder which contains cement and in which cellulose fibres or similar fibres are distributed; dilution of the fibre suspension with water to a predefined concentration of solids; transfer of the diluted fibre suspension into at least one perforated cylinder box (6a, 6b), whereby the filling level of said perforated cylinder box (6a, 6b) is adjusted to a set value; application of the diluted fibre suspension onto a perforated cylinder drum (7a, 7b) located in the perforated cylinder box; transfer of the fibre-suspension layer formed on the perforated cylinder drum (7a, 7b) onto a felt strip (8); drying and pressing of the layer positioned on the felt strip (8); removal of the layer from the felt strip (8) for the production of panels or moulded bodies; measurement of the thickness of the layer removed from the felt strip; and adjustment of the bulk density of the suspension supplied to the perforated cylinder box (6a, 6b). Improved control over panel thickness is obtained by modifying the set value of the filling level of at least one perforated cylinder box (6a, 6b) in accordance with the measured thickness of the layer removed from the felt strip (8).
    • 8. 发明公开
    • Process for manufacturing cement plates reinforced with fibrillated polymeric films
    • Verfahren zum Herstellen von mit fibrillierten polymeren Filmen bewehrten Zementplatten。
    • EP0116858A2
    • 1984-08-29
    • EP84100504.4
    • 1984-01-18
    • Moplefan S.p.A.
    • Vittone, AndreaChiappini, GiuseppeDi Paola, Massimo
    • B28B23/00C04B31/34
    • B28B1/42B28B1/527B28B23/0006
    • There are prepared cement plates with an incorporated reinforcement of fibrillated polymeric film in the form of an open net, by means of the continuous process accomplished on Hatscheck machines and comprising, in the order, the following operative steps:

      a) unwinding one or more nets, each consisting of a plurality of fibrillated polymeric film layers, in an open form, from continuous reels,
      b) cutting such net into pieces having a length approximately equal to the circumference of the forming roll, or a length equal to the one of the entire net wound up by the roll for each plate,
      c) causing the net pieces to be impregnated by a cement mix optionally containing one or more wetting agents,
      d) depositing the net pieces onto a conveyor belt on which a cement mix layer containing from 15 to 100 parts by weight of water referred to 100 parts by weight of solids, and having a thickness at least equal to that of such net,
      e) subjecting the net, after its coming into contact with the cement layer, to percussion and vertical vibration actions,
      f) applicating vacuum in order to remove the water in excess and to raise the compactness degree between net and cement,
      g) winding the net-cement panel on a roll having a circumference equal to the length of the plate to be obtained, and simultaneous application of pressure,
      h) cutting the plate at the notch around which the ends of the net pieces are arranged,
      i) compressing the plate so cut.
    • 通过在Hatscheck机器上完成的连续过程,制备具有开纤网形式的原纤化聚合物膜的加强筋的水泥板,其顺序包括以下操作步骤:a)放开一个或多个 网,每个都由开放形式的多个原纤化聚合物膜层组成,来自连续卷轴,b)将这样的网切割成具有大约等于成形辊周长的长度,或者等于一个长度的长度 整个网被每个板卷绕的整个网,c)使得网片被任选地含有一种或多种润湿剂的水泥混合物浸渍,d)将网片沉积到其上具有水泥的输送带上 混合层含有15至100重量份的水,指的是100重量份的固体,并且具有至少等于该网的厚度,e)使其在接触之后进行接触 与水泥层一起进行冲击和垂直振动; f)施加真空以除去过量的水,并提高网和水泥之间的紧密度,g)将网状水泥板卷绕在具有 圆周等于要获得的板的长度,并且同时施加压力,h)在布置有网片末端的切口处切割板,i)压制板被切割。