3581972

Information

• Patent Grant
• 3581972

• References
• Source

• Patent Number

  3,581,972

• Date Filed

  Not available

• Date Issued

  Tuesday, June 1, 1971
  53 years ago

• CPC

  • B65D75/26 - Articles or materials wholly enclosed in laminated sheets or wrapper blanks
  • B29C63/0039 - continuously
  • B29C65/4815 - Hot melt adhesives
  • B29C65/5071 - and being composed by one single element
  • B29C65/5085 - and comprising grooves
  • B29C66/1122 - Single lap to lap joints
  • B29C66/43 - Joining a relatively small portion of the surface of said articles
  • B29C66/4322 - by joining a single sheet to itself
  • B29C66/49 - Internally supporting the
  • B29C66/723 - being multi-layered
  • B29C66/8322 - Joining or pressing tools reciprocating along one axis
  • B29C66/83413 - cooperating rollers, cylinders or drums
  • B31B1/64 - by applying heat or pressure
  • B31F5/085 - combined with folding the strip around the edge, or applying an already folded strip on
  • B65D3/22 - with double walls with walls incorporating air-chambers with walls made of laminated material
  • B29C65/10 - using hot gases (
  • B29C65/5092 - characterised by the tape handling mechanisms
  • B29C66/72321 - consisting of metals or their alloys
  • B29C66/72328 - Paper
  • B29L2009/00 - Layered products
  • B31B2201/6026 - by applying heat or pressure

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes
  • 493 - Manufacturing container or tube from paper