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US 2025/0116110 A1Published application
Fire Resistant Wallboard
AssigneePanel Rey, S.A.
InventorsAmba Ayambem, Angel Ivon Zavala Pinon, Jorge Armando Domingez Ovalle
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Abstract
A fire resistant wallboard with carbon black and expandable graphite. A carbon black layer is positioned between the conventional cover sheet and a gypsum core with embedded expandable graphite. The carbon black layer may be employed either with one of the cover sheets or with both of the cover sheets.
Claims8
A fire resistant wallboard comprising in order:
- a. a front cover sheet;
- b. a front carbon black layer;
- c. a core comprising a mixture of gypsum and expandable graphite;
- and
- d. a back cover sheet,
- wherein the front carbon black layer is positioned between the front cover sheet and the gypsum core.
3 more elements
A fire resistant wallboard comprising in order:
- a. a front cover sheet;
- b. a front carbon black layer;
- c. a core comprising a mixture of gypsum and expandable graphite;
- d. a back carbon black layer;
- and
- e. a back cover sheet,
- wherein the front carbon black layer is positioned between the front cover sheet and the gypsum core and the back carbon black layer is positioned between the back cover sheet and the gypsum core.
4 more elements
Dependencies are inferred from the claim text.