Claims
- 1. A gypsum construction board comprising a gypsum core formed by application of a water paste like slurry of a mixture of calcined gypsum, water and operational additive on a gypsum-free, dry lower lining sheet folded over upward around longitudinal edges of said core on which is placed a narrower upper gypsum-free, dry lining sheet having margins overlapping the margins of the lower lining sheet, both margins being bonded adhesively and said upper and lower lining being a two-layer laminate of an inner glass fiber web and an outer non-woven fiber felt, said web being embedded in the gypsum core over the width of the board and the glass fiber web of the lower lining sheet being omitted at folded-over sides and edges.
- 2. A gypsum construction board according to claim 1, wherein the glass fiber web of the upper lining sheet is omitted at the adhesively bonded margins.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3012293 |
Mar 1980 |
DEX |
|
Parent Case Info
This is a continuation of application Ser. No. 246,263, filed Mar. 23, 1981, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3964944 |
Gwynne |
Jun 1976 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
2049603 |
Aug 1977 |
DEX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
246263 |
Mar 1981 |
|