3868891

Information

• Patent Grant
• 3868891

• References
• Source

• Patent Number

  3,868,891

• Date Filed

  Not available

• Date Issued

  Tuesday, March 4, 1975
  50 years ago

• CPC

  • B29C65/18 - using heated tools
  • B29C65/78 - Means for handling the parts to be joined
  • B29C66/0326 - Cutting
  • B29C66/112 - Single lapped joints
  • B29C66/1122 - Single lap to lap joints
  • B29C66/131 - Single flanged joints
  • B29C66/232 - said joint lines being multiple and parallel
  • B29C66/47421 - said spouts comprising flanges
  • B29C66/723 - being multi-layered
  • B29C66/8322 - Joining or pressing tools reciprocating along one axis
  • B31B19/84 - Forming valves or applying valve inserts
  • 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
  • B31B27/00 - Machinery characterised by making interconnected envelopes or bags
  • B65D33/002 - Rolls, strips or like assemblies of bags
  • B29C66/3452 - Making complete joints by combining partial joints
  • B29C66/43 - Joining a relatively small portion of the surface of said articles
  • B29C66/7234 - comprising a barrier layer
  • B29C2793/0018 - for making a hole
  • B29C2793/0045 - Perforating
  • B29C2793/0081 - before shaping
  • B29C2793/009 - after shaping
  • B29L2031/7128 - Bags, sacks, sachets
  • B31B2219/9054 - Applying rigid valves, spouts, or filling tubes
  • B31B2219/924 - the bags being interconnected
  • B31B2221/50 - involving joining superimposed sheets
  • B31B2237/10 - the bags having no structural provision at the base for thickness of content
  • B31B2237/50 - involving joining superimposed webs

• US Classifications

  • 493 - Manufacturing container or tube from paper