Abstract: Provided are an agent for decreasing the fluidity of a solid-liquid mixture (“agent”), and a method for decreasing the fluidity of a solid-liquid mixture within a short time while preventing an increase in the volume of the solid-liquid mixture, regardless of the chemical composition of the solid-liquid mixture. The agent is a granular material having a structure formed by entangled fibers. In one embodiment of the agent, the granular material has an average particle diameter of 300 ?m or less and a specific surface area of 0.25 to 100 m2/g inclusive as measured by a BET method. In another embodiment of the agent, the granular material has a porosity of 50% or more and a specific surface area of 0.25 to 100 m2/g inclusive. It is preferred that each of the fibers contains a hydrophilic polymer; the hydrophilic polymer is preferably cellulose, the solid-liquid mixture is preferably mud.

Abstract: A label sheet cutting apparatus includes a first rotating shaft and a second rotating shaft arranged parallel to each other, a driving device configured to rotate the first rotating shaft and the second rotating shaft, and a cutter unit including a first disc-like rotary blade and a second disc-like rotary blade each having a hole in a center, and a holding member configured to rotatably support the first rotary blade and the second rotary blade, and hold one surface of the first rotary blade and one surface of the second rotary blade such that the two surfaces are partially in contact with each other, the cutter unit configured to cut a sheet-like medium to be cut which is fed to pass between the first rotary blade and the second rotary blade.