3894823

Information

• Patent Grant
• 3894823

• References
• Source

• Patent Number

  3,894,823

• Date Filed

  Not available

• Date Issued

  Tuesday, July 15, 1975
  49 years ago

• CPC

  • B29C45/1642 - having a "sandwich" structure
  • B29C44/0492 - Devices for feeding the different materials
  • B29C45/00 - Injection moulding
  • B29C2045/1651 - Independent injection runners or nozzles
  • B29C2045/1653 - using a core injection nozzle penetrating through the skin or into the mould cavity
  • Y10S264/83 - Injection molding of polyolefin-type foam
  • Y10S425/224 - Injection mold nozzle valve

• US Classifications

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