A device for controlling a system for spraying a bonding composition onto mineral fibers, includes a ring, inside which the mineral fibers pass, a spray nozzle arranged on the ring and for spraying the composition onto the fibers, a first apparatus for measuring a flow of a fluid relative to the sprayed composition and a second apparatus for measuring a pressure of a fluid relative to the sprayed composition. A module compares a pair formed by a value, measured by the first apparatus, of the fluid flow and a value, measured by the second apparatus, of the fluid pressure, with a pair formed by a first previously defined reference value of a considered fluid flow, and by a second previously defined reference value of the considered fluid pressure. A pump feeds the fluid into the device so that a value of the flow of the fluid is constant.

A device for controlling a system for spraying a bonding composition onto mineral fibers, includes a ring, inside which the mineral fibers pass, a spray nozzle arranged on the ring and for spraying the composition onto the fibers, a first apparatus for measuring a flow of a fluid relative to the sprayed composition and a second apparatus for measuring a pressure of a fluid relative to the sprayed composition. A module compares a pair formed by a value, measured by the first apparatus, of the fluid flow and a value, measured by the second apparatus, of the fluid pressure, with a pair formed by a first previously defined reference value of a considered fluid flow, and by a second previously defined reference value of the considered fluid pressure. A pump feeds the fluid into the device so that a value of the flow of the fluid is constant.

A system and a method of manufacturing continuous glass filament fiberglass media comprises melting glass within a temperature controlled melter. Molten glass exits through orifices in a bushing plate. The resulting fiberglass filaments are received on a rotating drum and sprayed with binder and aqueous solution. The resulting fiberglass mat is placed onto a let-off table then sprayed with aqueous solution before further processing.

A process for manufacturing self-adhesive insulation products based on mineral wool includes (a) forming mineral fibers by centrifugation of molten glass or rock, (b) spraying, over the mineral fibers, immediately after the forming, a first liquid organic binder composition, (c) forming a blanket of mineral fibers which are coated with the first liquid organic binder composition, (d) covering a face of the blanket with a surfacing mat of glass or organic fibers having high heat resistance, (e) heating the blanket, covered with the surfacing mat, in a drying oven for a period of time and at a temperature sufficient to cure the organic binder, and (f) applying, to the exposed face of the surfacing mat, a self-adhesive material. A second liquid organic binder composition is applied, after stage (c), to the mat and/or face of the blanket which is intended to come into contact with the surfacing mat.

An annular discharge device for discharging a gluing composition onto glass fibres includes at least one distribution circuit for the gluing composition and a plurality of spray nozzles fluidically connected with the distribution circuit and distributed over the perimeter of the annular discharge device for discharging the gluing composition onto the glass fibres intended to pass into the annular discharge device defined by an axis of revolution, each spray nozzle being oriented towards the interior of the annular discharge device with an angle of inclination determined in relation to the plane of revolution of the annular discharge device. At least two spray nozzles arranged consecutively on the perimeter of the annular discharge device are disposed so as to have an orientation with respect to the plane of revolution of the annular discharge device each with a different angle of inclination with respect to one another.

An annular discharge device for discharging a gluing composition onto glass fibres includes at least one distribution circuit for the gluing composition and a plurality of spray nozzles fluidically connected with the distribution circuit and distributed over the perimeter of the annular discharge device for discharging the gluing composition onto the glass fibres intended to pass into the annular discharge device defined by an axis of revolution, each spray nozzle being oriented towards the interior of the annular discharge device with an angle of inclination determined in relation to the plane of revolution of the annular discharge device. At least two spray nozzles arranged consecutively on the perimeter of the annular discharge device are disposed so as to have an orientation with respect to the plane of revolution of the annular discharge device each with a different angle of inclination with respect to one another.

A thermal and/or acoustic insulation product includes a loose mineral wool, the mineral wool including mineral fibers and being suited to being blown. The product includes at least one additive and has a total additive weight percent of between 0.4% and 1.2% inclusive and a micronaire of between 4 L/min and 9 L/min.

A thermal and/or acoustic insulation product includes a loose mineral wool, the mineral wool including mineral fibers and being suited to being blown. The product includes at least one additive and has a total additive weight percent of between 0.4% and 1.2% inclusive and a micronaire of between 4 L/min and 9 L/min.

The invention relates to conductive multi-layer materials for leak detection applications. The electrically conductive multi-layer material comprises a woven glass fibre web (2) having a binding agent (4) and a fire retardant compound (5), which is impregnated with electrically conductive carbon particles (6), wherein one side of the glass fibre web (2) is coated with metallic electrically conductive layer (10) by the means of vacuum deposition.

The invention relates to conductive multi-layer materials for leak detection applications. The electrically conductive multi-layer material comprises a woven glass fibre web (2) having a binding agent (4) and a fire retardant compound (5), which is impregnated with electrically conductive carbon particles (6), wherein one side of the glass fibre web (2) is coated with metallic electrically conductive layer (10) by the means of vacuum deposition.