| 摘要 |
Method for the manufacture of the mantle portion (1) of a cistern of reinforced plastic. It is a common feature of all prior-art methods that the mantle portion (1) is built around an inner mould, which is arranged so as to revolve around a horizontal axis while the reinforcement and resin are being applied. The object of the present invention is to provide a method according to which the inner mould can be eliminated, which takes place so that a prefabricated inner layer is cut into rectangular shape with dimensions corresponding to the desired length of the mantle portion and preferably to its entire circumference, which layer is formed to a substantially cylindrical vertical mantle face, whereat the two opposite edges of the layer are joined together by means of reinforcement and resin, whereupon a number of support rings (3) are inserted into the cylinder so as to provide support during the subsequent lamination, which takes place in an in itself ordinary way. |
