3855907

Information

• Patent Grant
• 3855907

• References
• Source

• Patent Number

  3,855,907

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1974
  49 years ago

• CPC

  • B31B23/00 - Machinery characterised by making rectangular envelopes or bags of flat form, i.e. without structural provision at the base for thickness of contents, from webs
  • B31B19/36 - by continuously feeding same to stationary members
  • B31B37/00 - Machinery characterised by making envelopes or bags with structural provision at the base for thickness of contents from webs
  • B65B43/04 - Forming flat bags from webs
  • B31B2219/2627 - by continuously feeding same to stationary members
  • B31B2219/269 - involving gusset-forming
  • B31B2221/107 - obtained from sheets cut from larger sheets or webs before finishing the bag forming operations
  • B31B2221/20 - the bags having structural provision at the base for thickness of content
  • B31B2221/402 - the bags having their openings facing in the direction of movement
  • B31B2221/60 - starting from tubular sheets
  • B31B2237/10 - the bags having no structural provision at the base for thickness of content
  • B31B2237/403 - the bags having their openings facing in the direction of movement

• US Classifications

  • 493 - Manufacturing container or tube from paper
  • 053 - Package making