Precision hand-held system for dispensing viscous materials from a flexible pouch and method of dispensing viscous materials

A precision dispensing system comprising a hand-holdable dispensing gun and a flexible pouch for disposition within said gun for dispensing metered amounts of a flowable material disposed within said pouch,

• said gun comprising a hollow cylinder formed of a pair of pivotably connected sections defining an interior chamber for receipt of said pouch, said chamber having a piston located at one end thereof and an end wall portion at the other end thereon, said end wall portion having a nozzle receiving passageway therein and being formed by respective end wall sections of said pivotably connected sections when said pivotably connected sections are closed;
• said pouch comprising a hollow body formed of a pair of panels of a flexible sheet material, said panels being secured together along a pair of side edges by respective side edge seals and along a front edge by a front edge seal, one of said side edge seals and said front edge seal forming a first corner of said pouch, the other of said side edge seals and said front edge seal forming a second corner of said pouch, said panels at said first corner being secured together by a first corner seal, said first corner seal forming one side edge of a first dispensing nozzle, said panels at said second corner being secured together by a second corner seal, said second corner seal forming one side edge of a second dispensing nozzle, said panels also being secured together at an intermediate portion of said front edge seal by an intermediate seal, said intermediate seal forming another side edge of said first nozzle and another side edge of said second nozzle, said panels being cut along first cut lines adjacent to said first corner seal between said first corner seal and said front edge seal to form a first finger grip portion, a portion of each of said panels contiguous with said front edge seal at said nozzles forming a respective tear line along which said panels are adapted to be torn by pulling on said first finger grip portion to open said nozzles, and with the portion of said package which is torn along said tear lines remaining secured to other portions of said pouch, said pouch being arranged to be disposed within said chamber of said dispenser with said nozzles extending out of said passageway.

A method of dispensing metered amounts of a flowable material disposed within a pouch, said pouch comprising a hollow body formed of a pair of panels of a flexible sheet material, said panels forming a chamber in which said flowable material is disposed and being secured together by a first corner seal and a second corner seal, said first corner seal forming one side edge of a first dispensing nozzle, said second corner seal forming one side edge of a second dispensing nozzle, said panels also being secured together an intermediate seal, said intermediate seal forming another side edge of said first nozzle and another side edge of said second nozzle, each of said nozzles being sealed by an edge seal, with a portion of each of said panels contiguous with said edge seal forming a tear line, said method comprising:

• (a) tearing a portion of said pouch along said tear line to open said nozzles:
• (b) placing said pouch within a chamber of a hand-holdable dispensing gun;
• and
• (c) operating said gun to dispense metered amounts of said flowable material disposed within said pouch through said nozzles.