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AssigneeFPInnovations
InventorsGilles DORRIS, Yuxia BEN, Qiaozhi AN, Annie DORRIS, Xiaoyu WANG
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There are provided gypsum panels, sheets and multi-layer sheets as well as methods of preparation thereof. For example, there are provided cellulose filament-reinforced gypsum panels, sheets and multi-layer sheets and methods of preparation thereof. For example, in such gypsum panels, sheets and multi-layer sheets gypsum is bound with cellulose filaments to strengthen the gypsum panels, sheets and multi-layer sheets. The cellulose filament-reinforced gypsum panel can be, for example, a core comprising a honeycomb or corrugated structure. There are also provided aqueous suspensions comprising cellulose filaments and CaSO4.2H2O.
A sheet comprising cellulose filaments and CaSO4.2H2O, said sheet comprising at least about 0.1% of cellulose filaments by weight, based on the total weight of the cellulose filaments and the CaSO4.2H2O.
A gypsum panel comprising a first multi-layer sheet, a second multi-layer sheet and a core comprising a honeycomb or corrugated structure sandwiched between said first multi-layer sheet and said second multi-layer sheet, said first multi-layer sheet, said second multi-layer sheet and said honeycomb or corrugated structure each comprising cellulose filaments and CaSO4.2H2O.
A method for preparing a cellulose filament-reinforced (CF-reinforced) gypsum sheet, said method comprising:
An aqueous suspension comprising cellulose filaments and CaSO4.2H2O.
Dependencies are inferred from the claim text.