Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
White light emitting lamp and white LED lighting apparatus including the same
Method of estimating remaining constant current/constant voltage charging time
Radio communication device and sequence length adjusting method
Flexible quantization
Method of making a CIG target by cold spraying
Switchable solvents and methods of use thereof
Method for measuring and improving organization effectiveness
  Randomly Featured Patents
Thermal cycling titanium matrix composites
Electric arc furnace and method with coaxial current flow
Process for the production of catalyst pastes containing dibutyltin oxide and the use thereof
Switching power device
Echo canceller and compression operators cascaded in time division multiplex voice communication path of integrated access device for decreasing latency and processor overhead
Garbage container with automatic opening and closing functions
Heavy tungsten-nickel-iron alloys with very high mechanical characteristics
Process for producing uranium rich compositions from uranium hexafluoride using fluid injection in the post oxidation step
Antenna alignment devices
Polynucleotide compositions