| 摘要 |
The process serves to distribute any variations in thickness in the peripheral direction of the tubing, in conjunction with a process in which the tubing is blown and is either wound up or processed further in stationary devices. The plane in which the tubing is flattened is pivotally moved about the axis of the tubing reversingly in steps of at least approximately 360 DEG . The flattened tubing is deflected about a deflecting member, which is reversingly moved in unison with the flattening plane and is laterally offset from the axis of rotation of the flattening plane and disposed in a plane that is at right angles to the flattening plane. The tubing is then moved about additional deflecting members, which are disposed in planes that are parallel to the plane which contains the first deflecting member and are also pivotally moved reversingly about the axis of rotation of the flattening plane. The angles through which the deflecting members are moved decrease as the distance from the flattening station increases. Successive deflecting members are alternatingly disclosed at least close to and more remote from the axis of rotation of the flattening plane. The tubing which has moved about the last deflecting member is moved in a constant direction in another plane, which is at right angles to the axis of rotation of the flattening plane. |
