3676033

Information

• Patent Grant
• 3676033

• References
• Source

• Patent Number

  3,676,033

• Date Filed

  Not available

• Date Issued

  Tuesday, July 11, 1972
  52 years ago

• CPC

  • B29C44/0446 - by increasing the density locally by compressing part of the foam while still in the mould
  • B29C44/08 - using several expanding or moulding steps
  • B29C44/5636 - with the addition of heat
  • B29C67/221 - Applying counter pressure during foaming
  • B29C67/222 - using expandable particles or beads as starting material
  • B29C31/002 - Handling tubes
  • Y10S264/04 - Molding and forming bendable and flexible product from rigid preform

• US Classifications

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