Process and device for the production of mineral wool nonwoven f

Details Process and device for the production of mineral wool nonwoven f Process and device for the production of mineral wool nonwoven f

1990-06-29

1992-03-03

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

65 44, 65 9, 156 622, 156 624, 156 628, 264518, 264113, 425 811, 425 821, 425 831, C04B 3701, C03C 2706, B32B 1702

Patent

active

050930699

ABSTRACT:
In the continuous production of mineral wool nonwoven fabrics, fiber/gas/air mixtures (3, 4) produced by several shredding units (14 to 17) are directed onto collecting conveyor units (19, 21) with suction surfaces (c, d) running in a curve and being under suction pressure for the formation of a wool nonwoven fabric (25). In this case the arrangement is such that an imaginary suction surface, increasing in its size in the conveying direction, is assigned to each fiber/gas/air mixture formed by the individual shredding units (14 to 17), actually d is larger than c. As a result it is possible, in a space-saving method of construction and per collecting conveyor unit to produce mineral wool nonwoven fabrics from rock wool with constant suction pressure with bulk densities even under 25 kg/m.sup.3 in good product quality. By series connection of several units or an oscillating deposit of an individual nonwoven fabric multilayer felt webs can further be formed.

REFERENCES:
patent: 2467291 (1949-04-01), Brelsford et al.
patent: 2785728 (1957-03-01), Slayter et al.
patent: 2897874 (1959-08-01), Stalego et al.
patent: 3220812 (1965-11-01), Underwood
patent: 3824086 (1974-07-01), Perry et al.
patent: 4201247 (1980-05-01), Shannon
patent: 4463048 (1984-07-01), Dickson et al.

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