Abstract:
A method of operating a melt system includes melting, flowing, pumping, and replenishing. Hot melt pellets are melted in channels of a melter into a melt liquid that has an upper surface that represents a melt level of the melt liquid in the melter. The melt liquid is flowed downward through the channels to a melt system outlet. The melt liquid is pumped from the melt system outlet. The melter is replenished with hot melt pellets until the melt level is proximate to a top end of the channels.
Abstract:
The side seal assembly consists of three main components: a hardened and precision ground side seal 12, a spring 14 and a housing 16 in which the side seal 12 and spring 14 are assembled. The side seal contains two tabs 22 that fit through a slot feature 24 in the housing. The tabs 22 on the side seal 12 slide through the housing slot 24 into a relief area 26 that allows the side seal 12 to turn 90 degrees and fall into a shallow pocket 28 that keeps the side seal 12 retained.
Abstract:
A melter for a melt system includes a tank, a vibration generating device, and a heater. The tank has a wall for containing a hot melt adhesive, and the vibration generating device vibrates the wall. The heater transfers heat to the tank.
Abstract:
A hot melt system is described which includes a container of hot melt pellets, a melter, a feed system, a pump, and a dispensing system. A pressure relief system is built around the pump, which may redirect liquefied adhesive from the pump outlet to the pump inlet.
Abstract:
A pumping system comprises an internal combustion engine, a generator, a pumping unit and a heat recovery system. The generator is driven by the internal combustion engine. The pumping unit is powered by the generator. The heat recovery system thermally couples the internal combustion engine with the pumping unit.
Abstract:
The cartridge 10 provides an inexpensive, effective, clean, reliable means of supplying pressurized cleaning fluid for two component applicators 14. The low friction piston 18 design reduces drag and provides consistent cleaning fluid 12 pressure.
Abstract:
A method of cleaning and flushing a fast-set material spray gun 10 is disclosed which uses, in the preferred embodiment, a mixture of approximately 62.5% DMSO, 32.5% DBE and 5% water. This mixture 12 is non-toxic when atomized and lowers the freezing point of the liquid to below 10°F. Because the solvent is mixed with the purge air and expelled from the gun in atomized form, it is important that a non-toxic solvent be utilized and also important that the freezing point of the mixture be low enough to allow use in colder climates without freezing.
Abstract:
A heating system includes an air motor with an exhaust; a pump for a hot melt dispensing system and driven by the air motor; and a shroud enclosing at least a portion of the air motor and the pump to direct heat from the pump to the exhaust of the air motor.
Abstract:
A hot melt dispensing system includes a hopper, a delivery line, a shaker, and an air supply line. The hopper stores hot melt pellets and the delivery line delivers the hot melt pellets from the hopper. The shaker agitates the hot melt pellets. The air supply line supplies air that flows through the shaker to produce vibration and additionally flows through the delivery line to create a vacuum that draws the hot melt pellets through the delivery line.
Abstract:
A method includes delivering current in parallel to a first resistive heating element, a second resistive heating element and a third resistive heating element during a first operating mode of a hot melt dispensing system, and delivering current in parallel to the first resistive heating element, the second resistive heating element and third and fourth resistive heating elements during a second operating mode of a hot melt dispensing system where the third and fourth resistive heating elements are arranged in series.