3235640

Information

• Patent Grant
• 3235640

• References
• Source

• Patent Number

  3,235,640

• Date Filed

  Not available

• Date Issued

  Tuesday, February 15, 1966
  59 years ago

• CPC

  • B30B11/248 - Means preventing the material from turning with the screw or returning towards the feed hopper
  • B29C47/362 - using static mixing devices
  • B29C47/38 - using screws surrounded by a cooperating barrel
  • B29C47/40 - using at least two parallel intermeshing screws or at least two parallel non-intermeshing screws
  • B29C47/585 - Extruder feed section
  • B29C47/6012 - having varying outer diameter
  • B29C47/6018 - having varying channel depth
  • B29C47/6025 - having variable channel pitch
  • B29C47/6037 - having reverse feeding elements
  • B29C47/6093 - having parts without mixing elements
  • B29C47/62 - having more than one screw-thread
  • B29C47/66 - Barrels or cylinders
  • B29C47/668 - having threads
  • B29C47/76 - Venting, drying or degassing means
  • B29C47/766 - in screw extruders
  • B30B11/245 - using two or more screws working in different chambers
  • B29C47/0009 - characterised by the shape of the articles

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes