Plastic corrugated pipe forming unit and technology

Plastic corrugated pipe forming machine due to the material, light and has excellent physical and chemical properties, so in telecommunications, urban construction, agricultural irrigation and road drainage areas such as widely used. At present, countries around the world to the production of plastic pipe, corrugated pipe occupies an important position, though the plastic corrugated pipe forming machine production in China started late, but technology has reached or close to the world level. Dalian plastics research institute since 1989 to develop, double-wall corrugated pipe unit it first successfully developed only in the domestic advanced level of forming unit, the cost is only about a quarter of the imported equipment, the performance of the introduction of prototype level, has the advantages of low investment, quick effect, high economic benefit, the characteristics of the products tested in performance introduced equipment production of pipe level, to fill the domestic blank, can replace imported equipment. Double-wall corrugated pipe forming unit was rated as state-level new products, well received city-level scientific and technological progress first prize. Rigid PVC, the material such as hdpe double-wall corrugated pipe or the wall, specifications from from 3 mm to 160 mm (large diameter bellows are in development), single wall corrugated pipe units in the country has only nearly hundred, double-wall corrugated pipe has transferred more than seventy units. In order to make the technology can meet the requirements of different manufacturers, we developed a twin-screw machines and two single screw type. Twin screw machine can meet the production of rigid PVC double-wall corrugated pipe. Two single screw type, adapt to hdpe double-wall corrugated pipe production, the main features are less investment in equipment, production is easier to control. Double-wall corrugated pipe outer wall corrugated, inner surface is smooth, the mechanical structure with special-shaped cross-section, has the good under external load capacity; So has the mechanical properties such as compressive strength, high ring stiffness. Pipe material is qualitative light, its 1/2 ~ 1/3 of the tube wall thickness for plane wall, linear density than 40% ~ 50% with the specifications of the flat wall tube light, save raw materials to reduce the cost, due to the inner surface is smooth, conveying liquid head loss is small, to save energy. The molding head unit transformation and module can produce different specifications of the single wall, double-wall corrugated pipe.