Fluid-permeable fibre matrix and a method of producing said matr

Details Fluid-permeable fibre matrix and a method of producing said matr Fluid-permeable fibre matrix and a method of producing said matr

1987-07-16

1988-10-11

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

428105, 428224, 428283, 428408, 523222, B32B 512

Patent

active

047770694

ABSTRACT:
A fluid-permeable fibre matrix having a large surface area and a method of making said matrix are described. The fibre matrix is characterized in that its fibres are oriented to a high degree in such a manner that the total matrix fibre length is substantially oriented in a main orientation plane, and that membranes are provided between the fibres. It is recommended that at least 60%, preferably at least 80% of the total fibre length of the matrix deviate by at most about 20.degree. from the main orientation plane. The matrix fibres suitably consist of mineral wool, preferably glass wool, while the membranes consist of a film-forming organic or inorganic material, such as synthetic or natural polymeric materials, glass, metals, ceramics, waxes, fats or oils. The membranes may be impermeable or porous, and active material, such as inorganic catalysts, biocatalysts or adsorbing materials, such as activated carbon and zeolites, may be affixed to or incorporated in the membranes. The fluid-permeable fibre matrix may be produced by arranging the main orientation plane of the original fibre matrix which has no membranes, substantially vertical, whereupon a film-forming liquid, such as gelatin, is supplied to the upper end of the fibre matrix. With suitable values of the viscosity and the surface tension of the film-forming liquid, membranes are formed between the matrix fibres, and these membranes are solidified, for example by polymerization, evaporation of solvent, or in some other manner.

REFERENCES:
patent: 3455818 (1969-07-01), Leifield
patent: 4428763 (1984-01-01), Layden
patent: 4464192 (1984-08-01), Layden et al.

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