Process for manufacturing shells of mineral fibers

Details Process for manufacturing shells of mineral fibers Process for manufacturing shells of mineral fibers

1985-11-20

1989-05-16

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

242 671R, 242 66, 264324, 264258, 156187, 156446, D04H 144

Patent

active

048308080

ABSTRACT:
In the manufacture of insulating shells formed by a felt of mineral fibers wound around a mandrel, main pressing elements intervene as soon as the winding begins and remain in contact with the surface of the shell during the entire winding phase. Auxiliary pressing elements intervent only when the shell, during shaping, has reached a given outside diameter of, for example, 200 mm. The process applies particularly to the insulation of conduits of small and average outside diameters.

REFERENCES:
patent: 3140968, Barrior et al.
patent: 3723245 (1973-03-01), Blary
patent: 4153498 (1979-05-01), Bichot et al.
patent: 4164177 (1979-08-01), Canfield

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