3671357

Information

• Patent Grant
• 3671357

• References
• Source

• Patent Number

  3,671,357

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1972
  52 years ago

• CPC

  • B31B47/02 - for making envelopes or bags without preshaped bottoms
  • B29C65/224 - being a resistive ribbon, a resistive band or a resistive strip
  • B29C65/229 - characterised by the means for tensioning said heated wire, resistive ribbon, resistive band or resistive strip
  • B29C65/743 - using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
  • B29C65/745 - using a single unit having both a severing tool and a welding tool
  • B29C66/0044 - using a separating sheet
  • B29C66/1122 - Single lap to lap joints
  • B29C66/43121 - Closing the ends of tubular or hollow single articles
  • B29C66/8324 - Joining or pressing tools pivoting around one axis
  • B29C66/944 - by controlling or regulating the time
  • B29C66/73921 - characterised by the materials of both parts being thermoplastics
  • B29C66/8122 - characterised by the composition of the material constituting the pressing elements
  • B29C66/81265 - Surface properties
  • B29C66/81821 - of the welding jaws
  • B31B2247/00 - Manual operations or hand tools for making bags or boxes
  • Y10T156/12 - Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing

• US Classifications

  • 156 - Adhesive bonding and miscellaneous chemical manufacture