Process and apparatus for improving the distribution on a receiving device of fibers carried by a gas current
AssigneeIsover Saint-Gobain
InventorsJean A. Battigelli, Dominique Plantard
Life of this patent
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Abstract
The invention relates to the distribution on a receiving device of fibers carried by a gas current. To improve the distribution, the gas current carrying the fibers is subjected to the action of a gas layer which envelopes the current and of which the direction of flow in a plane tangent to the gas current differs from that of the gas current. The action of the gas layer results in an expansion of the current carrying the fibers. The invention is particularly useful where the fibers are received on a collecting device such as a foraminous conveyor belt, of large width.
Claims14
A process for producing mineral fiber mats on a perforated fiber-collecting surface, comprising attenuating streams of molten mineral material in an attenuating zone in a gas current, directing said current with the attenuated fibers toward the fiber-collecting surface, and developing a layer of gas surrounding and adjoining the periphery of the fiber-carrying current and directing said layer into contact with the gas current, the contact being effected in spaced relation downstream of said attenuating zone, the general direction of flow of the gas of said layer being toward the collecting surface and at any peripheral position around the current being at an oblique angle to the adjoining portion of the fiber-carrying gas current.
Apparatus for producing mineral fiber mats on a perforated fiber-collecting surface, comprising means for attenuating streams of molten mineral material in an attenuating zone in a gas current, means for directing said current with the attenuated fibers toward the fiber-collecting surface, blowing means for developing a layer of gas surrounding and adjoining the periphery of the fiber-carrying current, and means for directing said layer into contact with the gas current downstream of said attenuating zone, the general direction of flow of the gas of said layer being toward the collecting surface and the flowing means including means circumferentially positioned around the current and arranged to deliver gas at an oblique angle to the adjoining peripheral portion of the fiber-carrying gas current.
Dependencies are inferred from the claim text.