| 摘要 |
A method for providing a smoothly mixed slurry to a web (23C) comprises the steps of inserting calcined gypsum and water into a mixer (12), agitating the contents of the mixer (12) to form an aqueous dispersion of the calcined gypsum, passing the agitated contents from an outlet (20) of the mixer (12) into a slurry dispensing apparatus (22) including a flexible, resilient conduit (24), and creating a back-pressure on the mixture in the slurry dispensing apparatus (22) by constricting the conduit (24). The constricting of the conduit (24) is effected by a constrictor valve (28) located on said conduit (24). The back-pressure created by the constrictor valve contributes to the smoothness of the slurry delivered to the web. |
