| 摘要 |
FIELD: chemical industry; the methods and the devices for manufacture of the metal-plastic belts. ^ SUBSTANCE: the invention is pertaining to the production processes of manufacture of the metal-plastic belts consisting of the monolithically connected metallic and plastic belts. The method includes the stages of cleaning, preliminary chemical treatment of the cleaned metallic belt, its drying and feeding of the metallic belt and the plastic belt onto the pressure rollers. In the process of cleaning and the preliminary treatment of the metallic belt as the mean for cleaning and for formation of the uniform layer of the non-metallic chemical coating they use perchloroethylene, in which solution the metallic belt is dipped. After that the metallic belt is transferred into the zone of heating up to 35°C. As the binding layer the upper surface of the metallic belt is deposited with the adhesion stimulating agent - the primer. Then the metallic belt is heated up to 50°C before its junction with the plastic belt. On the metallic belt heated side, which is used for junction, the polyurethane adhesive heated up to the fusion point is applied. A that for provision of the best adhesion power between the coupled metallic and plastic belts, the latter is made wider, than the metallic belt. After the coupling the metal-plastic belt is cut off in width of the metallic belt. The invention also describes the device for realization of the method. The invention allows to produce the metal-plastic belts capable to withstand the heavy molding of the pipes with the internal folded seams without the polymer coating layer separation due to the increased strength of junction of the metallic and plastic belts at simplification of the production process and equipment. ^ EFFECT: the invention ensures the increased strength of junction of the metallic and plastic belts at simplification of the production process and the equipment. ^ 2 cl, 3 dwg |
