A method measures inside a blanket of mineral and/or plant fibres being moved by at least one conveyor with a conveyor belt. The method uses a measuring system including a sensor and an actuator for introducing the sensor into the blanket, the actuator being mounted on the conveyor belt and able to move the sensor between a retracted position and a measuring position inside the blanket. The method also includes introducing the sensor into the blanket by the actuator under the effect of the movement of the conveyor belt.

A method measures inside a blanket of mineral and/or plant fibres being moved by at least one conveyor with a conveyor belt. The method uses a measuring system including a sensor and an actuator for introducing the sensor into the blanket, the actuator being mounted on the conveyor belt and able to move the sensor between a retracted position and a measuring position inside the blanket. The method also includes introducing the sensor into the blanket by the actuator under the effect of the movement of the conveyor belt.

An apparatus (20) for the continuous production of a mattress (14) of agglomerated mineral fibres is described, comprising a mineral fibre receiving or forming chamber (2), an accumulator conveyer (3) arranged below the receiving or forming chamber (2) and comprising adjacent drums (4) provided with perforated or gas-permeable circumferential surfaces (5) for receiving and accumulating the fibres to form a mattress (14) comprising mineral fibres between the drums (4), a gas extraction device (6) in fluid communication with the perforated or gas-permeable circumferential surfaces (5) of the drums (4) and a lower space between the drums (4) for unloading the mattress (14) of mineral fibres formed between the drums (4), the apparatus (20) being characterized in that said drums (4) comprise each a first half-drum (4a) and a second half-drum (4b) telescopically connected with each other and which are movable along the axis of rotation (X) between a first stroke-end position in which the first half-drum (4a) and the second half-drum (4b) are juxtaposed or in contact with each other, and a second stroke-end position in which the first half-drum (4a) and the second half-drum (4b) are spaced apart from each other at a predetermined maximum distance along the direction of the axis (X) of rotation of the drums (4), a gas-permeable or perforated circumferential band (22) being furthermore provided, which overlaps at least one of said first half-drum (4a) and said second half-drum (4b) at opposite end portions of said half-drums (4a,4b).

An apparatus (20) for the continuous production of a mattress (14) of agglomerated mineral fibres is described, comprising a mineral fibre receiving or forming chamber (2), an accumulator conveyer (3) arranged below the receiving or forming chamber (2) and comprising adjacent drums (4) provided with perforated or gas-permeable circumferential surfaces (5) for receiving and accumulating the fibres to form a mattress (14) comprising mineral fibres between the drums (4), a gas extraction device (6) in fluid communication with the perforated or gas-permeable circumferential surfaces (5) of the drums (4) and a lower space between the drums (4) for unloading the mattress (14) of mineral fibres formed between the drums (4), the apparatus (20) being characterized in that said drums (4) comprise each a first half-drum (4a) and a second half-drum (4b) telescopically connected with each other and which are movable along the axis of rotation (X) between a first stroke-end position in which the first half-drum (4a) and the second half-drum (4b) are juxtaposed or in contact with each other, and a second stroke-end position in which the first half-drum (4a) and the second half-drum (4b) are spaced apart from each other at a predetermined maximum distance along the direction of the axis (X) of rotation of the drums (4), a gas-permeable or perforated circumferential band (22) being furthermore provided, which overlaps at least one of said first half-drum (4a) and said second half-drum (4b) at opposite end portions of said half-drums (4a,4b).

A method for preparing an insulating product based on wool includes an aeration step inside a device, the device including a chamber and at least one structure capable of generating a turbulent gaseous flow, during the aeration step. A stream of carrier gas is introduced into the chamber and a wool in the form of nodules or flakes is subjected to the turbulent flow of this carrier gas with entrainment in one sense in a direction A and in the opposite sense in a direction B that is the opposite to the direction A so that within the chamber there is at least in one plane perpendicular to the direction A in which the wool entrained in the direction A crosses the wool entrained in the direction B.

A method for preparing an insulating product based on wool includes an aeration step inside a device, the device including a chamber and at least one structure capable of generating a turbulent gaseous flow, during the aeration step. A stream of carrier gas is introduced into the chamber and a wool in the form of nodules or flakes is subjected to the turbulent flow of this carrier gas with entrainment in one sense in a direction A and in the opposite sense in a direction B that is the opposite to the direction A so that within the chamber there is at least in one plane perpendicular to the direction A in which the wool entrained in the direction A crosses the wool entrained in the direction B.

The invention relates to an apparatus for manufacturing mineral wool. The apparatus includes means (1) for producing molten mineral material, at least one fiberizing device (3) for forming fibres, into which fiberizing device the molten mineral material is fed (2) and by which fibres (12) are formed. The fiberizing device (3) comprises, rotationally arranged around a vertical axis (15), at least one fiberizing plate (13) having a vertical peripheral edge, into which are formed numerous small-sized holes (14), through which the molten material is led by centrifugal force to form fibres (12). Into the fiberizing device (3) are arranged elements to produce a vertical flow of blowing medium (16) to be led around the fiberizing plate (13), the flow causing the fibres (12) to turn downwards and, at the same time, to thin. Downstream the fiberizing device (3) is arranged a collection device (6), into which the formed fibres (12) are led and collected into a mat-like material. In connection with said at least one fiberizing plate (13) is arranged a substantially horizontal, relatively narrow channel (5), through which the fibres (12) are brought into the chamber space (7) of the collection device (6). The invention further relates to a method for manufacturing mineral wool and a mineral wool product manufactured by the method.

The invention relates to an apparatus for manufacturing mineral wool. The apparatus includes means (1) for producing molten mineral material, at least one fiberizing device (3) for forming fibres, into which fiberizing device the molten mineral material is fed (2) and by which fibres (12) are formed. The fiberizing device (3) comprises, rotationally arranged around a vertical axis (15), at least one fiberizing plate (13) having a vertical peripheral edge, into which are formed numerous small-sized holes (14), through which the molten material is led by centrifugal force to form fibres (12). Into the fiberizing device (3) are arranged elements to produce a vertical flow of blowing medium (16) to be led around the fiberizing plate (13), the flow causing the fibres (12) to turn downwards and, at the same time, to thin. Downstream the fiberizing device (3) is arranged a collection device (6), into which the formed fibres (12) are led and collected into a mat-like material. In connection with said at least one fiberizing plate (13) is arranged a substantially horizontal, relatively narrow channel (5), through which the fibres (12) are brought into the chamber space (7) of the collection device (6). The invention further relates to a method for manufacturing mineral wool and a mineral wool product manufactured by the method.

The invention relates to the field of materials based on mineral fibers, in particular mineral wool such as glass wool or rock wool. More specifically, the present invention relates to a method and a device for recycling the water recovered in a fiberizing and shaping method when using a specific acid binder based on monomeric polycarboxylic acid, or a salt of such an acid.

A method for preparing an insulating product based on wool includes an aeration step inside a device, the device including a chamber and at least one structure capable of generating a turbulent gaseous flow, during the aeration step. A stream of carrier gas is introduced into the chamber and a wool in the form of nodules or flakes is subjected to the turbulent flow of this carrier gas with entrainment in one sense in a direction A and in the opposite sense in a direction B that is the opposite to the direction A so that within the chamber there is at least in one plane perpendicular to the direction A in which the wool entrained in the direction A crosses the wool entrained in the direction B.