Patent · US Expired

Method of producing a mineral fiber product

US4251320A · kind A · utility

6Cited by

3References

10Claims

0Family size

Assignee

LIMITED LIABILITY COMPANY “ROCKWOOL” · SE

Inventors

Gunnar Cederqvist · Lerdala, SE
Ulf Aberg · Skövde, SE

Key dates

Filing date	Nov 30, 1976
Grant date	Feb 17, 1981
Priority date	—
Expiry date	Nov 30, 1996

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/34
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The disclosure relates to the production of a mineral fiber product for example to replace asbestos fibers in different products. In the method of production, at most 7% by weight of mineral fibers is dispersed in water which contains a wetting agent, undispersible material being then separated and the dispersion being then mechanically dewatered to a dry content of from 30 to 70% by weight and a fiber density of from 200 to 400 kg/m.sup.3. In a subsequent, separate stage, the fibers are redispersed in water substantially without the addition of wetting agent, are provided with possible additives such as cellulose fibers, are shaped, dewatered and dried.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.