摘要:
A sheet manufacturing apparatus can determine if the sheets supplied as feedstock have already been recycled. The sheet manufacturing apparatus has a supply unit configured to supply feedstock; a defibrating unit configured to defibrate the feedstock; an depositing unit configured to deposit defibrated material defibrated by the defibrating unit; a forming unit configured to form a sheet from a web laid by the depositing unit; a marking unit configured to apply a mark to at least one of the web and the sheet; and a reading unit configured to read the mark imparted to the feedstock when a sheet having mark imparted thereto is supplied as the feedstock.
摘要:
A method of forming a dilute water slurry for water felting a basemat for an acoustical ceiling tile comprising delivering a bale of compressed mineral wool with a density of at least 8 lbs. per cubic foot at an unbaling station, releasing a binding holding the bale in compression, mechanically separating the fibers of a mineral wool bale with mechanical instrumentalities arranged to disperse the fibers to a generally uniform density of less than 2 lbs. per cubic foot prior to passage of the fibers through the tank inlet, and causing the separated mineral fibers to pass into the mixing tank for contact with water suspended binder.
摘要:
A method for pretreating biomasses to allow their subsequent conversion to biofuel comprises the following steps: - a) causing the biomasses to pass through a first mechanical reduction device (1) to enable the biomasses to be reduced in size to smaller-sized particles; - b) placing the particles on a particle filtering grille so that particles (P1) smaller than a predetermined size pass through the grille and feed out of the first mechanical reduction device (1); - c) making the particles (P1) which are smaller than the predetermined size pass through a first particle classifying device (2) to allow the particles (P1) to be divided according to size into a first fraction (f1) of coarse size particles and a second fraction (f2) of fine size particles.