A method for producing a liner hose (2) for lining pipelines, comprising the method steps of moving a circumferentially closed inner film hose (4) over a winding mandrel (6) of a winding apparatus (8) and wrapping the inner film hose (4), which is guided on the winding mandrel (6) by means of a guide mechanism (18), with a fibrous strip (12) which has been impregnated with curable reaction resin, is characterized in that the inner film hose (4) is guided via endless pulling means (14) that circulate without a drive, and in that the inner film hose (4) that has been wrapped with the fibrous strip (12) is moved off of the winding mandrel (6) solely by a pull-off mechanism (16) which acts from the outside on the fibrous strip (12). The invention further relates to a device for carrying out the method.

Plastic tubing including a thermoplastic ribbon helically wrapped and heat bonded to itself to form a tubing wall and a thermoplastic reinforcement located helically around and along the tubing wall. At least a thickness of the tubing wall or a size of the thermoplastic reinforcement is varied along the tubing wall.

Plastic tubing including a thermoplastic ribbon helically wrapped and heat bonded to itself to form a tubing wall and a thermoplastic reinforcement located helically around and along the tubing wall. At least a thickness of the tubing wall or a size of the thermoplastic reinforcement is varied along the tubing wall.

A flexible tube formed by interlocking a first edge of a single strip material with a second edge of the strip material that adjoins the first edge by spirally winding the strip material, allowing passage of a solid object, and having a specific length, wherein the flexible tube has a shape of an ellipse in cross-section perpendicular to a direction of the passage, the ellipse having a shape that prevents a torsional force caused by torsion from propagating to a part on which a torsional force concentrates in a flexible tube with a circular cross-section perpendicular to the direction of the passage, and wherein the ellipse has a shape that creates a space for a cable between an outer surface of the ellipse and an inner surface of a covering material having a circular cross-section with a diameter greater than a length of a major axis of the ellipse.

A flexible tube formed by interlocking a first edge of a single strip material with a second edge of the strip material that adjoins the first edge by spirally winding the strip material, allowing passage of a solid object, and having a specific length, wherein the flexible tube has a shape of an ellipse in cross-section perpendicular to a direction of the passage, the ellipse having a shape that prevents a torsional force caused by torsion from propagating to a part on which a torsional force concentrates in a flexible tube with a circular cross-section perpendicular to the direction of the passage, and wherein the ellipse has a shape that creates a space for a cable between an outer surface of the ellipse and an inner surface of a covering material having a circular cross-section with a diameter greater than a length of a major axis of the ellipse.

An extruded bead of thermoplastics material and an extruded tape-like web of thermoplastics material are wrapped in a coordinated manner around a rotating mandrel to continuously form a corrugated, helically reinforced, uniquely constructed stretch hose having a thread-like exterior appearance dominated by the web extending in an inclined spiral as it bridges from an outer diameter of each reinforcing coil to an inner diameter of the next-formed reinforcing coil. When the hose is axially compressed, the thin web-defined wall that connects each adjacent pair of reinforcing coils advantageously has one portion that bends or folds radially outwardly, and another portion that bends or folds radially inwardly. Discrete lengths of the hose are treated to minimize stress, to reset memory, and to greatly enhance hose flexibility.

An extruded bead of thermoplastics material and an extruded tape-like web of thermoplastics material are wrapped in a coordinated manner around a rotating mandrel to continuously form a corrugated, helically reinforced, uniquely constructed stretch hose having a thread-like exterior appearance dominated by the web extending in an inclined spiral as it bridges from an outer diameter of each reinforcing coil to an inner diameter of the next-formed reinforcing coil. When the hose is axially compressed, the thin web-defined wall that connects each adjacent pair of reinforcing coils advantageously has one portion that bends or folds radially outwardly, and another portion that bends or folds radially inwardly. Discrete lengths of the hose are treated to minimize stress, to reset memory, and to greatly enhance hose flexibility.

An air hose, the air hose comprising a first component and a second, elastic component. The second component is fastened to the first component at a plurality of fastening positions along the axial direction of the air hose. The air hose is operable between a first condition in which the first component is slack between axially adjacent fastening positions and collapsible in a radial direction, and second condition in which axially adjacent fastening positions are separated against a biasing force of the second component.

An air hose, the air hose comprising a first component and a second, elastic component. The second component is fastened to the first component at a plurality of fastening positions along the axial direction of the air hose. The air hose is operable between a first condition in which the first component is slack between axially adjacent fastening positions and collapsible in a radial direction, and second condition in which axially adjacent fastening positions are separated against a biasing force of the second component.

A medical tube comprises a spirally wound bead forming a plurality of successive coils. Each of the plurality of successive coils has an internal diameter and an external diameter, and a spirally wound film extending between adjacent coils of the bead. The film is bonded at a first location on a surface of a first coil of the bead and at a second location on a surface of a second coil of the bead. The first coil is adjacent to the second coil and the first location and the second location are located between the internal diameters and external diameters of respective first and second adjacent coils. Together the spirally wound bead and spirally wound film form a conduit.