Patent · US Expired

Gypsum board comprisiing linings made of glass fiber non-wovens coated with an inorganic cement binder

US5395685A · kind A · utility

40Cited by

1References

4Claims

0Family size

Assignee

Gebruder Knauf Westdeutsche Gipswerke KG · DE

Inventors

Harro Seth · Iphofen, DE
Gerhard Neuhauser
Claus-Peter Berneth · Marktbreit, DE

Key dates

Filing date	Jul 20, 1990
Grant date	Mar 7, 1995
Priority date	—
Expiry date	Jul 20, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/2992
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A gypsum board comprises linings made of coated non-woven fiberglass mats having surfaces turned away from the gypsum core of the fiberglass mats which have been coated with an inorganic binder at least partially set with water. Preferably, quick-setting mixtures comprising cement, .alpha.-hemihydrate and ultra-fine silica are used which are dimensionally stable during setting as well as later on.

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