Modernization of Technology and Equipment for Glass Fiber Reinforced Plastic Rebar Production

Abstract

Glass fiber reinforced plastic rebar (GFRP-rebar) is widely used in the modern construction industry. The analysis of the manufacturing methods showed that the epoxy adhesive impregnation unit is imperfect. The impregnation is carried out by immersion of filaments in a pastepot or bending them around a rotary spool. After that, the devices are used to remove excess adhesive and guide rollers and form the rebar roving. The parts contacting with adhesive must be regularly cleaned. It makes the process low-efficient and increases financial and time costs. An open pastepot with the epoxy adhesive pollutes the air of the working area.We propose to change the impregnation unit and combine it with the device twisting filaments into a roving. It is necessary to dispense adhesive exactly from the nozzle to the place of the filaments connection. This will prevent harmful fumes from penetrating into the work area, maintain accurate adhesive dispensing, increase the production purity, reduce the processing line and the cost. This construction doesn’t require large financial costs but can significantly improve the production efficiency.