Resources Contact Us Home
Extruder die head

Image Number 5 for United States Patent #6533570.

An extruder die head, preferably a blown film head, comprises an internal cylindrical mandrel and a jacket, which envelops concentrically said mandrel. Between said mandrel and jacket an annular channel is formed that empties into a die slit. The invention also comprises at least one line, which empties into the annular channel in the area opposite the die slit and which feeds a melt. To prevent a slit between the central mandrel and the jacket, enclosing said mandrel, where the polymer melt could accumulate and deposit, the mandrel is made as one piece with a flange-shaped foot. The jacket rests with its bottom face sealingly on the annular surface of the flange-shaped foot and is connected, for example fastened, to the same. The annular channel extends from the peripheral surface of the mandrel to the flange-shaped foot up to and into the transition region. The line, feeding in a melt, empties into this transition region.

  Recently Added Patents
Method of manufacturing crystalline silicon solar cells with improved surface passivation
Therapeutic vitamin D sun-protecting formulations and methods for their use
System and method for providing definitions
Systems and methods for simultaneously configuring multiple independent backups
Graphical user interfaces and occlusion prevention for fisheye lenses with line segment foci
Systems and methods for adaptive error thresholds or adaptive modulation schemes based on atmospheric conditions
Method and device for determining processed image data about a surround field of a vehicle
  Randomly Featured Patents
Multifunction pneumatic system designed to control different operating components for domestic and/or industrial washing machines
Heat exchanger housing support
Hollow chamber profile system for precision superstructures
Electrolytic metal recovery method
Hydrophone deployment system for a sonobuoy
Condiment dispenser
Dual control device of an air conditioner
Insulating composition
Fishing rod holster
Attachment for plate members