2668769

Information

• Patent Grant
• 2668769

• References
• Source

• Patent Number

  2,668,769

• Date Filed

  Not available

• Date Issued

  Tuesday, February 9, 1954
  70 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
  • B31B19/64 - by applying heat or pressure
  • B65D75/30 - Articles or materials enclosed between two opposed sheets or blanks having their margins united
  • B31B2219/6053 - Making seals parallel to the direction of movement
  • B31B2237/10 - the bags having no structural provision at the base for thickness of content
  • B31B2237/50 - involving joining superimposed webs
  • Y10S206/806 - Suspension
  • Y10T156/1011 - Overedge bending or overedge folding
  • Y10T156/1034 - Overedge bending of lamina about edges of sheetlike base
  • Y10T156/1046 - Bending of one lamina only
  • Y10T156/1048 - to form dished or receptacle-like product
  • Y10T156/1093 - with covering of discrete laminae with additional lamina

• US Classifications

  • 383 - Flexible bags
  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 206 - Special receptacle or package
  • 229 - Envelopes, wrappers, and paperboard boxes
  • 493 - Manufacturing container or tube from paper