3817671

Information

• Patent Grant
• 3817671

• References
• Source

• Patent Number

  3,817,671

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1974
  50 years ago

• CPC

  • B29C44/5663 - by perforating the foam
  • B26F1/24 - Perforating by needles or pins
  • B29C47/0038 - Combined shaping operations
  • B29C47/0061 - Extrusion moulding combined with surface shaping
  • B29C47/025 - Coating non-hollow articles
  • B29C47/065 - with components in layered configuration
  • B29C47/12 - Extrusion nozzles or dies
  • B29C67/2235 - comprising extruding the compounds before foaming
  • B29C47/0021 - Flat flexible articles
  • B29C47/0033 - Articles having longitudinal irregularities
  • B29C47/0047 - producing flat articles having components brought in contact outside the extrusion die
  • B29C47/0057 - Extrusion moulding combined with shaping by orienting, stretching or shrinking
  • B29C47/0066 - Extrusion moulding combined with cutting
  • B29C47/02 - incorporating preformed parts or layers
  • B29L2028/00 - Nets or the like

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus