3800018

Information

• Patent Grant
• 3800018

• References
• Source

• Patent Number

  3,800,018

• Date Filed

  Not available

• Date Issued

  Tuesday, March 26, 1974
  50 years ago

• CPC

  • C08J9/16 - Making expandable particles
  • B29C44/206 - Using expandable particles or beads as starting material
  • B29C44/24 - Making multilayered articles
  • B29C44/26 - using several expanding steps
  • B29C44/30 - Expanding the moulding material between endless belts or rollers
  • B29K2025/00 - Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
  • C08J2325/06 - Polystyrene
  • Y10S264/05 - Use of one or more blowing agents together
  • Y10S264/09 - Pre-expansion of foamed polystyrene
  • Y10S264/15 - Aging of foamed resin products

• US Classifications

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