Saint-gobain Industries

Isover Saint-gobain

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Saint Gobain Isover

Saint-gobain Recherche

Francois Bouquet

Jean A Battigelli

Alain Debouzie

Marie-Pierre Barthe

Alain De Meringo

Igor Fezenko

Jean-Jacques Massol

Yannick Blandin

The subject of the invention is a unit for manufacturing felts () which are formed from crosslinked mineral fibers, comprising at least one pair of conveyors formed by a lower conveyor () and an upper conveyor () which are placed opposite each other and intended to compress said felt () in at least one direction, a means () for heat treating the felt () after it has passed through the conveyors () comprising at least one means () placed between the conveyors () and the heat treatment means (), intended to prevent decompression of the felt () in this region, said means comprising at least one cam () having a profile suitable for keeping a constant and minimum distance between the conveyors () and the heat treatment means (), and in that at least one of the conveyors is rigidly connected to one element of the heat treatment means ().

Method and device for making mineral fiber felts

A method of forming felts, the fibers of which are disposed in random directions, by depositing the fibers which are carried by a current of gas on a gas-permeable conveyor, the fibers, prior to being deposited, being coated with a binder composition. The felt constituted on the conveyor is subjected to at least one longitudinal compression, the intensity of which is regulated in such a way that no creases form on the surface. The felts obtained are highly resistant to compression, tearing and flexion.

Forming of felts which have an isotropic structure

The invention relates to the forming of felts, the fibres of which are disposed in random directions. These felts are obtained by depositing the fibres which are carried by a current of gas on a gas-permeable conveyor, the fibres, prior to being deposited, being coated with a binder composition. The felt constituted on the conveyor is subject to at least a longitudinal compression, the intensity of which is regulated in such a way that no creases form on the surface. The felts obtained are highly resistant to compression, to tearing and to flexion.

Glass fibers for insulation uses are produced by means of a centrifugal spinner which introduces glass streams into an annular attenuating blast adjacent the periphery of the spinner. An improved product quality and/or production rate as well as prolonged spinner life are obtained by selection and utilization of a novel combination of structural and operating parameters characterized in particular by a spinner diameter and peripheral speed substantially greater than conventionally employed.

Glass fiberization

Glass fiberization method

Fiber mats formed by attenuating molten streams of attenuable mineral material by subjecting the streams to the action of a hot attenuating gas blast. The gas blast induces gas from the surrounding atmosphere, and the combined blast and induced gas forming a fiber-carrying current. The current is directed toward a preforated fiber-collecting conveyor on which the fibers are deposited in the form of a mat and the gas of the current passes through the conveyor. Provision is made for withdrawing a peripheral portion of the fiber-carrying current at a point intermediate the zone of attenuation and the perforated fiber-collecting conveyor.

Process for forming fiber mats

Apparatus for forming of felts which have an isotropic structure

Glass fibers for insulation uses are produced by means of a centrifugal spinner which introduces glass streams into an annular attenuating blast adjacent the periperhy of the spinner. An improved product quality and/or production rate as well as prolonged spinner life are obtained by selection and utilization of a novel combination of structural and operating parameters characterized in particular by a spinner diameter and peripheral speed substantially greater than conventionally employed. The present technique further provides reduced turbulence in the receiving chamber and hence an improved distribution and orientation of the fibers on the collecting conveyor.

Method and apparatus for glass fiberization

A technique is disclosed for heat treatment of fibrous mats, especially mats formed of mineral fibers such as glass and carrying a heat hardenable binder material, such as a thermosetting resin. The method disclosed provides for continuous feed of the mat through a curing or treating oven having a plurality of heat treatment zones. In one form of the method, the heat treatment in at least one zone is effected by circulation of a heated gas, such as air, through the mat in said zone, and the mat is also subjected to heat treatment in a localized area lying within said zone by passage of a second heated gas through the mat, the second heated gas having a pressure higher than that in the surrounding portions of said zone.

Method for heat treatment of fibrous mats

In the technique for fiberizing glass by the use of a centrifugal spinner delivering glass streams into an attenuating blast, a novel spinner construction is provided, and provision is also made for increasing the production, while also providing for the use of glass of lower cost, and at the same time, reducing environmental pollution. Glass compositions and spinner alloy compositions particularly suited for use in accordance with the invention, are also disclosed.

Glass fiberization by centrifugal feed of glass into attenuating blast

Glass fiberization spinner

A technique is disclosed for heat treatment of fibrous mats, especially mats formed of mineral fibers such as glass and carrying a heat hardenable binder material, such as a thermosetting resin. The method and the equipment disclosed provide for continuous feed of the mat through a curing or treating oven having a plurality of heat treatment zones or areas. In one form of the method and equipment, the heat treatment in at least one zone is effected by circulation of a heated gas, such as air, through the mat in said zone, and the mat is also subjected to heat treatment in a localized area lying within said zone by passage of a second heated gas through the mat, the second heated gas having a pressure higher than that in the surrounding portions of said zone.

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Rantigny, France

Francois Bouquet