| 摘要 |
In order to manufacture a cylindrical, hollow-walled, hollow body, for example of a pipe or container, a bottom profile (1) is initially wound onto a mandrel in the form of a helical line. A top profile (2) is wound onto the bottom profile (1), offset by half a profile width. The bottom and top profiles (1,2) have an approximately E-shaped cross-section with two outer limbs (3,4) and two centre limbs (5,6), the mutual separation of the two centre limbs (5,6) corresponding to the thickness of the two outer limbs (3,4). The mutually facing surfaces (7,8) of the two outer limbs (3,4) and of the two centre limbs (5,6) are profiled with a sawtooth shape, so that a non-detachable, positively locking connection is produced between the bottom profile (1) and the top profile (2). The bottom profile (1) and top profile (2) may consist of different plastic materials. …<IMAGE>… |
