PP Hollow Building Formwork Production Line

Jinwei’er Machinery specializes in manufacturing advanced PP hollow‑core construction formwork production lines. Drawing on and refining domestic extrusion technologies, our equipment features two single‑screw extruders or a combination of a single‑screw extruder and a parallel twin‑screw extruder, followed by a hydraulic screen changer, die, shaping unit, primary haul‑off, annealing furnace, cooling tank, secondary haul‑off, cross‑cutting machine, and conveyor. We have supplied complete production systems to numerous enterprises both domestically and internationally. In the industry, the original O‑shaped hollow structure has evolved into T‑shaped, V‑shaped, N‑shaped, and grid‑type configurations; among these, the grid‑type design has gained market acceptance due to its favorable balance of material usage and structural performance. Products manufactured on this line exhibit smooth surfaces, tight dimensional tolerances, and a host of advantages, including nailability, planability, corrosion resistance, and excellent flame retardancy. Compared with traditional formwork, this type of construction formwork offers the following characteristics:

1. Excellent water resistance. Even when fully immersed in water for several days, it will not deform due to moisture. It is resistant to acids and alkalis, highly corrosion‑resistant, and does not rot or rust, making it particularly suitable for use in damp environments such as basement projects and bridge piers on highways and railways.

2. It is non‑adhesive and non‑sticky to cement, making demolding easy after construction and preventing deformation caused by cement adhesion.

3. Plastic formwork features a smooth, glossy surface that requires no release agent, thereby reducing cleaning and maintenance costs. Structures built using this formwork exhibit a smooth, even finish, eliminating the need for secondary finishing.

4. Lightweight, highly efficient to use, easy to erect and dismantle formwork, with low labor intensity during handling and high construction productivity.

5. High load-bearing strength, resistant to deformation, and durable against impact and abrasion.

6. Low cost. Long service life, with a reuse cycle of over 100 cycles. Moreover, used scrap boards and edge trimmings can be recycled and remanufactured, reducing costs and minimizing environmental impact. Overall operating costs are more than 30% lower than those of traditional wooden formwork.

7. Long service life and high reusability. Even damaged plastic formwork can be crushed and remanufactured into new panels, conserving resources and meeting the requirements of “green industry.”

8. Excellent thermal insulation, which helps shorten the construction schedule.

9. Various treatments can be applied by adding wood, and welding is also possible, allowing for flexible secondary processing on the construction site.

10. Plastic formwork offers excellent machinability: it can be planed, sawn, and nailed, and can be used in combination with wooden formwork.

11. It reduces the number of construction steps and enhances work efficiency. The hollow PP plastic formwork features two distinct surfaces—smooth or textured—each offering different performance characteristics. When the smooth surface is used, the concrete surface remains even and polished after formwork removal, meeting finish‑grade requirements without the need for a second plastering coat, thereby saving materials and labor, lowering cleaning and maintenance costs, and ensuring stable concrete quality that shortens the overall construction schedule. Conversely, the textured surface facilitates better adhesion with plaster layers; in particular, when applied to bridge piers, it not only achieves a decorative finish but also, thanks to its unique diffuse light‑reflection properties, minimizes glare that could impair drivers’ vision, thus providing an important safety benefit.

In summary, plastic formwork shares the common advantages of conventional construction formwork while offering additional features that surpass those of traditional materials. Plastic formwork is poised to become the ideal solution in the 21st century, enabling the global construction industry to replace wood, steel, and bamboo with plastic.

The products are widely used in:

Transportation industry: ships, aircraft, buses, train carriages, roofs, core layers of cargo compartments, and interior decorative panels.

Construction and interior decoration industries: exterior wall panels, interior decorative panels, partition walls for residential, office, and public buildings, commercial display racks, cleanroom panels, ceiling panels, kitchenware, and sanitary ware.

Advertising industry: screen printing, computer lettering, advertising signs, display panels, and signage boards.

Industrial applications: anti-corrosion projects in the chemical industry, thermoformed components, panels for cold storage facilities, specialized thermal insulation projects, and environmentally friendly panels.

Other applications: formwork, sports equipment, aquaculture materials, coastal tide‑proofing structures, water‑resistant lumber, arts and crafts supplies, and various lightweight partitions.

Parameters of the new PP hollow construction formwork production line (for details, please consult a sales engineer)