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
Printable and printed articles
Permeable pressure sensitive adhesive
Method, apparatus and computer program product for visualizing whole streets based on imagery generated from panoramic street views
Providing a feedback loop in a low latency serial interconnect architecture
Image forming apparatus with static elimination
Integrating multimedia capabilities with circuit-switched calls
Base station apparatus and communication control method
  Randomly Featured Patents
Ge photodetectors
Vehicle security system
Two-stage concentration for superphosphoric acid
Door lining of an automobile
Snap-on conveyor belt rollers
Forming method of refractive index matching film
Method for adjusting the gram load of head gimbal assemblies
Booting from non-linear memory
Insulative composition for forming polymeric electric current regulating junctions
Process for producing fluorine-containing compounds