The prepared sheets of glass-plastic have the following typical composition: 40 o glass-fiber, 45%o resin, 15%o plaster pa The specific weight of glakrezit is 0. 95-1.2 g/cm. The bending strength of a 2 mm-sheet is 890 kg/cm kg/cm?Dgth-200-500 kg/cm?, the impact strength-950 kg cm/cm?. The elasticity modulus E=5000-6000 The production of rolling materials(matting) Glass-fiber matting is used as a reinforcing material for pre paring soft, ruberoie coverings. Figure 1 shows a scheme of the equipment for making rolling material. Tufts of glass fiber cut from the drums of the molding machines are stretched onto a table into a fine cloth which is fed into a batch of polyvinyl-acetate emulsion coming from a tank where the emulsion is diluted with water at 16-20 in the proportion 1: 1.5 and blended. The prepared solution contains 40o dry material. On each m" of cloth is applied 110-120 g emulsion The cloth impregnated with the solution advances to a tunnel--conveyer drier(35 m long, belt width 1.2 m) here it moves at a speed of 4 m/min, being dried with circulating hot dry air. The air is withdrawn from outside with fans and heated in stoves to 180. The heated air advances to the drier through a nozzle placed in line with the conveyer belt. The wet air at the reduced temperatures of about 120 returns to the stoves for reheating and again rs the drier. is 120 g/m2 and of this about 80 g is glass fiber and about 40 g is bonding m aterial. The breaking strengt orthe The matting coming from the drier is turned into rolls. The width of the prepared material is 1 m, its weigh matting in a longitudinal direction with a width of 50 mm and thickness of 1 mm is 15 kg. The output of a single conveyer is 5000 m" of rolling material a day. Fig. 2. Fig. 1. lTunnel conveyer drier; 2)stove; 3)fan, 4)latticed transporter;5)vacuum drier; 6)glass fiber; 7)solution bath; 8)knives for cutting edges; 9)vacuum tank; 10) yorking glass thre solution tank, 11)solvent tank: 12)rollers; 13)prepared polushelk: Processing of glass polushelk is done with the product. nolding-centrifugal technique, The equipment consists of a molding machine and two centri fuges( Fig. 2) The polushelk is processed in the following way: 60 fibers(1) with a diameter of 40.2 mm with a distance tween the axes of 15 mm are placed vertically in the box fixed to the special frame. The frame makes an vance-return movement parallel to the drum, displaced by 45 mm, which makes a crossed winding on the at an angle of 2-3. The molded fibers with a speed of about 20 mm/min advance to the gas burners( 2). From the droplet form ed is stretched the fiber, which prior to rolling on the drum is slightly wetted with water by coming into contact with a roller covered with moist felt. When the fiber breaks, it is self-correcting on the drum( 3). The diameter and width of the drum is 1 m rpm 800. Winding takes 15-20 min, and during this time 300-400 g of fiber, diameter 10 u is wound, after which the movement of the frame is automatically cut off by the brake fixed to the box containing the fibers. a Transliteration of Russian-PublisherThe prepared sheets of glass-plastic have the following typical composition: 40% glass-fiber, 45% resin, 15% plaster of paris. The specific weight of glakrezit is 0.95-1.2 g/cm s. The bending strength of a 2 ram-sheet is 890 kg/cm z, tensile strength-200-500 kg/cm z, the impact strength-9.50 kg~ era/era z. The elasticity modulus E=5000-6000 kg/cm z. The production of rolling materials (matting). Glass-fiber matting is used as a reinforcing material for pre￾paring soft, Ruberoid roof coverings. Figure 1 shows a scheme of the equipment for making rolling material. Tufts of glass fiber cut from the drums of the molding machines are stretched onto a table into a fine cloth which is fed into a batch of polyvinyl-acetate emulsion coming from a tank where the emulsion is diluted with water at 16-20" in the proportion 1:1.5 and blended. The prepared solution contains 40% dry material. On each m z of cloth is applied 110-120 g emulsion. The cloth impregnated with the solution advances to a tunnel-conveyer drier (35 m long, belt width 1.2 m) where it moves at a speed of 4 m/min, being dried with circulating hot dry air. The air is withdrawn from outside with fans and heated in stoves to 180". The heated air advances to the drier through a nozzle placed in line with the conveyer belt. The wet air at the reduced temperatures of about 120" returns to the stoves for reheating and again enters the drier. The matting coming from the drier is turned into rolls. The width of the prepared material is 1 m, its weight is 120 g/m z and of this about 80 g is glass fiber and about 40 g is bonding material. The breaking strength of the matting in a longitudinal direction with a width of 50 mm and thickness of 1 mm is 15 kg. The output of a single conveyer is 5000 m z of rolling material a day. "4-4' J H :v: Fig. 1. Fig. 1. 1]Tunnel conveyer drier; 2)stove; 3) fan, 4)latticed transporter; 5) vacuum drier; 6) glass fiber; 7) solution bath; 8) knives for cutting edges; 9) vacuum tank; 10) solution tank, 11) solvent tank; 12) rollers; la) prepared product. ~g o Fig. 2. Experimental equipment for working glass thread -~olushelk.*Processing of glass polushelk is done with the molding-centrifugal technique. The equipment consists of a molding machine and two centrifuges (Fig. 2). The polushelk is processed in the following way: 60 fibers(I) with a diameter of 4 * 0.2 mm with a distance be￾tween the axes of 15 mm are placed vertically in the box fixed to the special frame. The frame makes an ad￾vance-return movement parallel to the drum, displaced by 45 ram, which makes a crossed winding on the drum at an angle of 2-~. The molded fibers with a speed of about 20 ram/rain advance to the gas burners (2). From the droplet form￾ed is stretched the fiber, which prior to rolling on the drum is slightly wetted with water by coming into contact with a roller covered with moist felt. When the fiber breaks, it is self-correcting on the drum (3). The diameter and width of the drum is 1 m, the rpm 800. Winding takes 15-20 rain, and during this time 300-400 g of fiber, diameter 10 g is wound, after which the movement of the frame is automatically cut off by the brake fixed to the box containing the fibers. *Transliteratlonof Russian-Publisher. 436