| 摘要 |
The sealing strips which can be affixed to webs comprise a clamping strip 3 made of a hard rubber which is U-shaped in cross-section, in which inwardly pointing sealing lips 4 made of a soft rubber are provided on the inner surfaces of the clamping strip's limbs 3a, and an outwardly pointing sealing hose 2 made of a soft (foam) rubber is arranged on the web of the U-shaped clamping strip 3. Despite the use of a sealing hose 2 which cannot easily be buckled, sufficiently high draw-off forces can be applied to the webs. In accordance with the invention, the three different materials of the sealing strip are each delivered to the extrusion die from a separate extruder (Fig. 2), the material for the sealing lips 4 being fed over a considerably shorter feed path in a die head, or respectively in the die thereof, than the materials for the clamping strip 3 and the sealing hose 2. <IMAGE> |
