Method for manufacturing a mineral wool panel
US5250153A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1990 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Oct 29, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21J1/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The manufacture of sag-resistant, lightweight structural mineral panels on a foraminous support wire is accomplished by forming a dilute aqueous dispersion of mineral fiber and/or aggregate and an anionically stabilized latex binder, coupling the binder solids onto the mineral fiber materials by adding a small amount of a flocculant such as a cationic polyacrylamide, and passing the slurry onto a first flooded section of the support wire to form an open, entangled, structural mass having water in interstitial spaces of the entangled mass. Water is stripped from the mass and the mass dried without collapse of the open structure by passing heated dry air through the open entangled structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.