3221613

Information

• Patent Grant
• 3221613

• References
• Source

• Patent Number

  3,221,613

• Date Filed

  Not available

• Date Issued

  Tuesday, December 7, 1965
  59 years ago

• CPC

  • B31B27/00 - Machinery characterised by making interconnected envelopes or bags
  • B31B2219/028 - the holders rotating
  • B31B2219/6061 - Making seals transversally to the direction of movement
  • B31B2219/6076 - using tools mounted on a drum
  • B31B2219/924 - the bags being interconnected
  • B31B2237/10 - the bags having no structural provision at the base for thickness of content
  • B31B2237/40 - involving folding webs longitudinally
  • Y10T156/1313 - Cutting element simultaneously bonds [e.g., cut seaming]

• US Classifications

  • 493 - Manufacturing container or tube from paper
  • 156 - Adhesive bonding and miscellaneous chemical manufacture