| 摘要 |
The invention relates to a tank wall, preferably made of concrete, in particular for tanks for storing and fermenting ferment materials, comprising a clamping channel having an undercut near the upper edge and open to the outside for clampingly receiving an edge of a plastic film cover, wherein the clamping channel comprises a constricted side entry slit formed by an upper and a lower protrusion, the height thereof being less than the height of an elongated insert profile that can be placed in the clamping channel and about which the film can be wrapped. A lower wall of the channel is preferably only somewhat wider than the thickness of the clamping rail at the facing longitudinal edge, while the upper wall of the channel is preferably at least double the width of the clamping rail at the facing longitudinal edge. The cross-sectional dimensions of the channel, entry slit, and insert profile are such that the insert profile can be inserted by means of the entry slit and at a diagonal orientation thereto into the clamping channel, and is retained against moving out of the clamping channel in approximately parallel orientation to the protrusions, when the film wrapped around the insert profile is under tension. |
