Patent ID: 7194847

Claim:
A method of filling collapsible packages to be used in a caulking gun, the method comprising the steps of: securing at least one collapsible package to an inlet of a cartridge body; applying pressure to an interior of the at least one collapsible package so that the pressure in the at least one collapsible package is greater than a pressure in the cartridge body such that the pressure causes the at least one collapsible package to extend; reducing pressure in the cartridge body; removing the pressure being applied to the interior of the at least one collapsible package so that the pressure in the cartridge body is less than the pressure in the interior of the at least one collapsible package such that the reduced pressure maintains the at least one collapsible package extended; filling the cartridge body with at least one chemical; and increasing the pressure in the at least one collapsible package, such that the at least one collapsible package is filled.