MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202617076456 A) filed by Knauf Gips Kg on June 19, 2026, for Methods Of Preparing Gypsum Board Using Cellulosic Fiber.
Inventors include Hemphill, Mark Kenneth; Vilinska, Annamaria; and Yum, Gregory Kin.
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: Disclosed are methods of preparing gypsum boards using cellulosic fiber. A set gypsum core is formed and disposed between face and back covers sheets. The set gypsum core is formed from a core slurry comprising stucco, water, cellulosic fiber, and optional additives, such as foaming agent, accelerator, retarder, dispersant, etc. A face dense layer formed from a dense layer slurry comprising stucco, water, and cellulosic fiber is disposed between the core and the face paper. If desired, a back dense layer formed from dense layer slurry can be disposed between the core and the back paper. In embodiments, cellulosic fiber is added to water to form a suspension. The suspension is introduced, while in a non-laminar state, into the core layer and dense layer slurries. Further disclosed is apparatus, such as an extractor and an additive injection system, which can be a part of a cementitious slurry mixing and dispensing assembly.
Disclaimer: Curated by HT Syndication.
