3663668

Information

• Patent Grant
• 3663668

• References
• Source

• Patent Number

  3,663,668

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1972
  52 years ago

• CPC

  • B29C44/3469 - Cell or pore nucleation
  • B29C44/3442 - Mixing, kneading or conveying the foamable material
  • B29C67/2235 - comprising extruding the compounds before foaming
  • B29C2791/008 - Using vibrations during moulding
  • Y10S264/13 - Cell size and distribution control while molding a foam
  • Y10S264/16 - Molding foamed polypropylen articles
  • Y10S521/915 - Utilizing electrical or wave energy during cell forming process

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 521 - Synthetic resins or natural rubbers