| 摘要 |
<p>A method of continuously forming a multilayer panel includes making a gyp sum slurry, then dividing the gypsum slurry into at least a primary gypsum s lurry and a secondary gypsum slurry. An additive slurry having water and an intumescent material is created, then added to the secondary gypsum slurry t o make an expandable layer slurry that is spread over at least a portion of a facing material. The primary gypsum slurry is distributed over the seconda ry gypsum slurry over the facing material and the expanding layer slurry to form a core. Optionally, another layer, an edge coating, is applied to the e xpanding layer for additional fire protection. The edge coating includes a s econd intumescent material. During a fire, the expanding layer expands to in crease the thickness of the fire exposed gypsum panel and the edge coating e xpands to seal the gap between adjoining gypsum panels.</p> |
