A system for generating and dispensing plural component materials includes a controller operatively connected to dispense valves and return valves. The return valves are in respective open states to allow constituent materials to circulate back to a source and are in respective closed states to block circulation. The dispense valves are in respective open states to allow mixing of the constituent materials to form the plural component material and in respective closed states to prevent generation and dispense. The controller implements a delay between closing the return valves and opening the dispense valves to build pressure in the system prior to generating and dispensing the plural component material.

A melting device includes a container capable of melting a material supplied in a free-flowing state and storing the material in a liquid state. The container includes a first storage section for storing the material in the free-flowing state, a second storage section for storing the material in the liquid state, and a dividing section provided between the first storage section and the second storage section and configured to hold back the material, when the material is in a non-molten or free-flowing state and to allow passage of the material from the first storage section into the second storage section, when the material is in a molten or liquid state.

In an air-operated plural component mixing and dispensing assembly, including a sliding mixing and dispensing element that forms, with a pair of component inlet blocks, the valves controlling the mixing and dispensing of the plural component materials, the mixing and dispensing element includes a rearward part and a forward part which together form a mixing chamber, with admission passages for the plural components to be mixed in the rearward part and a dispensing orifice for mixed plural component material in the forward part, also including a shaping air assembly with an air inlet, a nozzle air manifold with internal air passageways to one or more impinging air outlets, wherein the shaping air assembly is configured to shape the spray pattern of the dispensed plural component material hydrostatically.

The application relates to a mixing head including a head part and a mixing chamber device which is arranged in the head part. The mixing chamber device has a mixing chamber, which includes at least two inlets for introducing a starting material into the mixing chamber, and an outlet, via which the starting material mixture can be discharged out of the mixing chamber. A control piston is movably arranged in the mixing chamber. The mixing chamber device is releasably arranged in the head part in order to be exchangeable, wherein a transition fit and/or a clearance fit is formed between the head part and the mixing chamber device. The application additionally relates to a production method.

A method for inline resin mixing includes establishing a flow of a mixed resin, initially directing the mixed resin to a first intermediate volume and subsequently directing the mixed resin to a second intermediate volume after a predetermined triggering event relating to a continuing flow of the mixed resin. A mixed resin retention assembly for inline resin mixing includes an inlet spout and an intermediate vessel. The inlet spout receives a flow of the mixed resin. The intermediate vessel includes the first and second intermediate volumes. A valve assembly for inline resin mixing includes an exterior body, an interior body and a cover. The exterior body includes three input ports and an output port. The interior body is disposed within an interior cavity of the exterior body and defines five flow paths extending from a periphery and intersecting at a central portion of the interior body.

A dual-use, low-pressure spray gun for applying one-component foam as a spray and a bead including a low-pressure canister connector and a low-pressure air hose connector. A system for applying one-component spray foam as a spray and a bead including a dual-use spray gun with a low-pressure canister connector and a low-pressure air hose connector, a compressed air supply and a compressed air hose.