Method of making a fibrous pack

Details Method of making a fibrous pack Method of making a fibrous pack

1997-11-24

1999-05-04

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

65442, 65455, 65460, 65517, 65522, 2642111, 26421111, 425 722, 425464, C03B 3704, D01D 500

Patent

active

059002069

ABSTRACT:
A method of making a fibrous pack includes centrifuging at least two sets of mineral fibers from molten mineral material using at least two rotary mineral fiber spinners that are arranged in a machine direction along a collection surface, directing each set of the mineral fibers into a downwardly moving veil beneath one of the mineral fiber spinners, generating a downwardly moving array of aligned organic fibers from at least one orificed die that is spaced apart from each of the mineral fiber spinners and directing the array into contact with the mineral fibers, and collecting the mineral fibers and organic fibers as a fibrous pack.
There is also provided apparatus for making a fibrous pack including at least two mineral fiber spinners that are arranged in a machine direction along a collection surface for centrifuging at least two sets of mineral fibers from molten mineral material, means for directing each set of mineral fibers into a downwardly moving veil beneath one of the mineral fiber spinners, at least one orificed die that is spaced from each of the mineral fiber spinners for generating a downwardly moving array of aligned organic fibers and directing the array into contact with the mineral fibers, and a collection surface for collecting the mineral fibers and organic fibers as a fibrous pack.

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