3328220

Information

• Patent Grant
• 3328220

• References
• Source

• Patent Number

  3,328,220

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1967
  57 years ago

• CPC

  • B29C66/81812 - the welding jaws being cooled from the outside
  • B29C65/4815 - Hot melt adhesives
  • B29C65/5042 - covering both elements to be joined
  • B29C65/5071 - and being composed by one single element
  • B29C65/7873 - using cooperating conveyor belts or cooperating conveyor chains
  • B29C65/7894 - of continuously moving sheets or webs
  • B29C66/02241 - Cutting
  • B29C66/0242 - Heating, or preheating
  • B29C66/0342 - Cooling
  • B29C66/1122 - Single lap to lap joints
  • B29C66/137 - Beaded-edge joints or bead seals
  • B29C66/3262 - as after-treatment
  • B29C66/43121 - Closing the ends of tubular or hollow single articles
  • B29C66/83413 - cooperating rollers, cylinders or drums
  • B29C66/83423 - cooperating bands or belts
  • B29C66/8511 - Bag making machines
  • B31B19/64 - by applying heat or pressure
  • B65B51/00 - Devices for, or methods of, sealing or securing package folds or closures Devices for gathering or twisting wrappers, or necks of bags
  • B65B51/16 - by rotary members
  • B65D31/14 - Valve bags
  • B65D31/147 - the filling port being provided in a side wall
  • B29C65/14 - using wave energy
  • B29C66/71 - characterised by the composition of the plastics material of the parts to be joined
  • B29C2793/0081 - before shaping
  • B29L2031/7128 - Bags, sacks, sachets
  • B31B2219/603 - by applying heat or pressure
  • Y10T156/1011 - Overedge bending or overedge folding

• US Classifications

  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 264 - Plastic and nonmetallic article shaping or treating: processes