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
System and method for redundant array copy removal in a pointer-free language
Device and implantation system for electrical stimulation of biological systems
Direct mode adapter based shortcut for FCoE data transfer
Method for treating oncological diseases
Base station apparatus and method for use in mobile communication system
Method and apparatus to select a profile of a digital communication line
Field emission cathode structure
  Randomly Featured Patents
Method and apparatus for recognizing irradiation fields on radiation images
In situ rechargeable battery and charging stand
Combating pests with novel substituted carbamoyloximino-tetrahydrothiophenes and intermediates therefor
Front face of a vehicle wheel
Liposomal formulations of mitoxantrone
Process for overcoating granular materials
Retention system for a connnector housing
Card reading device having card orientation correction mechanism
Adaptive communication modes
In situ micromachined mixer for microfluidic analytical systems