3816231

Information

• Patent Grant
• 3816231

• References
• Source

• Patent Number

  3,816,231

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • D04H5/08 - characterised by the method of forming fleeces or layers
  • Y10T442/643 - Including parallel strand or fiber material within the nonwoven fabric
  • Y10T442/646 - Parallel strand or fiber material is naturally occurring [e.g., cotton, wool, etc.]
  • Y10T442/666 - Mechanically interengaged by needling or impingement of fluid [e.g., gas or liquid stream, etc.]
  • Y10T442/686 - Containing polymeric and natural strand or fiber materials

• US Classifications

  • 442 - Fabric
  • 019 - Textiles: fiber preparation
  • 028 - Textiles: manufacturing
  • 425 - Plastic article or earthenware shaping or treating: apparatus