Production process and device of high-fiber ultra-thin plastic-covered reinforcing band

Abstract

The invention discloses a production process of a high-fiber ultra-thin plastic-covered reinforcing band, and the plastic-covered fiber reinforcing band is prepared by heating and melting a plastic-covered fiber rope and then performing press forming. The invention further discloses a production device of the high-fiber ultra-thin plastic-covered reinforcing band, and the production device comprises a pay-off frame, a tension control device, a heating device, a forming roller group, a cold air machine, a traction machine and a winding machine which are sequentially connected in series. The device is reasonable in structure, simple in process and low in production cost, the plastic-covered fiber rope is directly adopted for preparing the reinforcing band, the fiber distribution is uniform, the fiber content is high and controllable, the production is stable and reliable, and the high-fiber ultra-thin plastic-covered reinforcing band can be continuously manufactured.

Description

technical field [0001] The invention relates to the technical field of reinforced composite pipe production, in particular to a production process and a device for reinforcing material fiber-reinforced belts. Background technique [0002] At present, the reinforcing materials used in the reinforced composite pipe usually have to be processed first, otherwise the product has a short service life and is prone to premature failure. For fiber reinforced materials, the common practice in the prior art is to perform coupling agent treatment, or to perform plastic coating treatment on the fiber bundles, that is, to cover the entire fiber bundles with a thermoplastic film. In plastic-coated fiber-reinforced materials, if the amount of fiber used is low, the fiber and plastic are well integrated, but the overall strength is not enough, which affects the performance; on the contrary, if the amount of fiber is high, the overall strength is high, but the fiber The degree of fusion with...

AI Technical Summary

Problems solved by technology

In plastic-coated fiber-reinforced materials, if the amount of fiber used is low, the fiber and plastic are well integrated, but the overall strength is not enough, which affects the performance; on the contrary, if the amount of fiber is high, the overall strength is high, but the fiber The degree of fusion with plastic is poor, its flexibility and bending resistance are reduced, and the reinforcement effect is also greatly reduced. The fiber itself is easily damaged during use and reduces the service life.

Therefore, the choice of fiber usage and the fusion with plastics have always been the key issues to be solved in the industry, but it is still difficult to obtain ideal performance

At present, the fiber content of reinforcing materials in the prior art, especially the reinforcing tape used for winding reinforced pipes, is generally low, only about 50% or lower. The reason is that the plastic-coated reinforcing tape in the prior art uses fiber The process of arranging side by side and extruder outsourcing plastic, the fiber content of the reinforced tape prepared by this process depends on the structure of the extrusion die, and the extruded plastic will inevitably fill the gaps between the fibers and form a rectangular cross section, even There is no gap reserved between fibers (in practice, in order to facilitate the positioning and threading of fibers in the reinforcement tape, a gap of about 0.1-0.5 mm is usually reserved), and the amount of plastic used will be large; Due to the limitation of the mold, the thickness of the plastic-coated reinforcement belt in the prior art is difficult to be very thin, and the thinner the reinforcement belt, the thinner the fiber rope is required. Easy to thread, thus greatly improving the difficulty of the process

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