3658978

Information

• Patent Grant
• 3658978

• References
• Source

• Patent Number

  3,658,978

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1972
  52 years ago

• CPC

  • B29C70/525 - Component parts, details or accessories; Auxiliary operations
  • B29C43/24 - Calendering
  • B29C44/30 - Expanding the moulding material between endless belts or rollers
  • B29C44/485 - the material being spread in the nip of two cooperating rollers
  • B29C47/0038 - Combined shaping operations
  • B29C47/0047 - producing flat articles having components brought in contact outside the extrusion die
  • B29C47/065 - with components in layered configuration
  • B29C47/32 - Roller-extrusion nozzles
  • B29C70/504 - using rollers or pressure bands
  • B29C43/46 - Rollers
  • B29C47/0021 - Flat flexible articles
  • B29C47/0054 - Extrusion moulding combined with blow-moulding or thermoforming
  • B29C47/0059 - Extrusion moulding combined with shaping by flattening, folding or bending
  • B29L2009/00 - Layered products

• US Classifications

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