A method of preparing a concrete composition for downhole injection includes utilizing a controller to control a process including circulating process water in a process water supply loop for a predetermined period while monitoring and controlling the temperature and flow rate of the process water, circulating aqueous-based air entrainment solution in an aqueous-based air entrainment solution supply loop for the predetermined period and controlling the flow rate of the aqueous-based air entrainment solution and after the predetermined period of time in which the flow of process water and aqueous-based air entrainment solution have stabilized, simultaneously actuating valves to divert and mix the process water, the aqueous-based air entrainment solution and compressed air to produce an air-entrained foam and mixing the foam with a concrete composition to be deployed downhole.

The present disclosure relates to a container for the production of a foamed sclerosant composition, to kits and systems including such a container, to methods for preparing a foamed sclerosant composition using such containers, and to a foamed sclerosant compositions obtainable by such methods. In an aspect, the container comprises a container body and a mixing element disposed in the container body, such that a foaming space is defined in an interior of the container body between the sidewalls and the mixing element. The mixing element may be configured to be operatively coupled with a rotating actuator without the actuator reaching the foaming space.

The invention refers to a fluid foaming machine (100) for producing foam comprising a fluid container (30) where the fluid is arranged, and a foaming device (40) through which fluid flows and is heated and/or foamed, the machine (100) further comprising at least a cooling unit configured to maintain permanently refrigerated both the fluid container (30) and the foaming device (40) during fluid preparation and during stand-by of the machine (100).

An apparatus, for producing a mixture of at least one gas and at least one liquid plastic component, includes a mixing device that is connected, via a first pipe, to an introducing device for the at least one gas and is connected, via a second pipe, to a conveying device for the at least one liquid plastic component. The introducing device and the conveying device are piston pumps that have pistons.

Disclosed is a method and system for blending a foam modifier with foaming agent online, e.g., as may be particularly useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C.sub.6-C.sub.16 fatty alcohol in some embodiments. The use of such a foam modifier can be used, for example, to stabilize the foam, reduce waste of foaming agent, improve void size control in the final product, and improve the gypsum board manufacturing process.

A system includes a source, a detector, and a controller. The source is configured to emit electromagnetic energy toward two plies of film. A portion of the emitted electromagnetic energy is within a range of wavelengths. The detector is arranged to detect electromagnetic energy propagating away from the two plies of film. The detector detects electromagnetic energy within the range of wavelengths and generates signals indicative of intensity of detected electromagnetic energy. The controller controls operation of the foam-in-bag system based the signals from the detector. The film is transmissive of electromagnetic energy in the range of wavelengths. When dispensed between the two plies of film, one or both of foaming chemical precursors or foam formed from a reaction thereof is opaque to electromagnetic energy in the range of wavelengths.

The invention relates to fire-fighting ground vehicles. A mobile fire extinguishing apparatus with pressurized foam generation comprises: a mixing chamber for supplying foam to a fire; and, a water supply system comprising a water supply pump with a drive, a foam-forming concentrate supply system comprising a foam pump with a drive, and also an air supply system comprising an air compressor with a drive. The drives of the compressor and of the foam pump are in the form of an adjustable hydraulic transmission of the air compressor drive and an adjustable hydraulic transmission of the foam pump drive, which are connected to a driving motor. The apparatus comprises a water meter, a gate valve having an electric drive, and a non-return valve, which are mounted on a water supply pipe between the water supply pump and the mixing chamber, and an electronic control unit for the gate valve.

The present invention relates to methods and systems for producing a foamed adhesive. A method for foaming an adhesive includes feeding an adhesive from a supply storage tank to a pump, conveying the adhesive outputted by the pump through an adhesive flow meter, injecting an air into the adhesive once the adhesive travels through the adhesive flow meter, feeding a mixture of the adhesive and air to a static mixer, mixing the mixture homogeneously with the static mixer such that the adhesive is foamed, and transporting the foamed adhesive to a product storage tank.

The foam generator for inverted compression receptacles according to the present invention is configured such that liquid contents pumped by an internal pressure as a result of directly compressing an inverted compression receptacle (100), having the liquid contents stored therein, are mixed with air in a gas-liquid mixing chamber (S) and, at the same time, directly discharged in the form of foam. That is, direct compression of the inverted compression receptacle (100) allows the liquid contents to be instantly discharged in the form of foam, thereby further improving product responsiveness. In particular, the present invention is capable of further improving the convenience of use thereof, since the contents can be discharged in the form of foam by directly compressing the inverted compression receptacle (100) merely with one hand. In addition, the foam generator for inverted compression receptacles according to the present invention allows the discharged foam to be applied to or cleanse skin by means of a message member (900) having massage bristles (930) attached thereto. In particular, the present invention is capable of producing a messaging effect while allowing the discharged foam (contents) to be directly and evenly applied to the skin by means of the message member (900) even without the use of palms.

Foam dispensing systems and methods are disclosed. Such systems and methods may include a foamed material dispenser, a dynamic mixer having a gas input, a process material input, and a foamed material output. The foamed material output may be in fluid communication with the foamed material dispenser. A pump having an output may be in fluid communication with the process material input of the dynamic mixer, and a gas injection valve may be in fluid communication with the gas input of the dynamic mixer. A gas pressure regulator may be coupled between the pressurized gas supply and the gas injection valve, and a gas injection cycle timer may be operatively connected to the gas injection valve, the gas injection cycle timer causing the gas injection valve to pulse open and closed to send pulses of pressurized gas into the dynamic mixer through the gas input.