This equipment is specifically designed for the continuous production of plastic drainage boards (also known as drainage mesh boards) made of high-density polyethylene (HDPE) or polypropylene (PP), widely used in civil engineering projects such as foundation drainage, garage roof drainage, and rooftop greening drainage.
Its core process flow and equipment functions are as follows:
Feeding System: Enables automatic conveying and supply of PE plastic granules.
130/33 Single Screw Extruder: The core of the production line. It heats, melts, plasticizes, and extrudes the PE raw material. "130/33" typically refers to a screw diameter of 130mm and a length-to-diameter ratio of 33:1. A large length-to-diameter ratio facilitates thorough plasticizing and stable extrusion.
Switching Device: Used for quickly switching between molds or filters, ensuring continuous production and reducing downtime.
Metering Pump (Gear Pump): A key component. Installed at the extruder outlet, it provides stable melt pressure and flow, greatly improving sheet thickness uniformity and dimensional accuracy.
L=2150 Mold: The core of the molding process. This is a special sheet mold with a width of 2150mm. Its die lip features an internal channel design that forms the three-dimensional structure of the drainage board, directly determining the product's geometry and drainage channels.
L=2200 Two-Roll Shaping Device: Composed of two precision rollers, this device performs initial embossing, cooling, and shaping on the molten sheet material just emerging from the die, ensuring a stable three-dimensional structure.
Cooling Support and Waste Edge Cutting Device: Multiple sets of rollers further cool the sheet material until it is completely solidified. The waste edge cutting device removes irregular edges from both sides of the sheet material.
Traction Machine: Provides stable traction force, pulling the drainage board out of the die at a uniform speed. Its speed is strictly synchronized with the extrusion speed, crucial for ensuring stable production and product dimensions.
Transverse Cutting Machine: Automatically cuts the continuously produced drainage boards to a preset length.
Rolling Machine: Automatically winds the cut sheet material into rolls for easy packaging, transportation, and storage.
Electrical Control System: The "brain" of the production line. Integrating a PLC and touchscreen, it controls all equipment parameters such as temperature, speed, and pressure, achieving automated production.
The key feature of this PE drainage board equipment is its specialized molds and shaping device, which enables efficient and continuous production of structurally stable and dimensionally accurate three-dimensional drainage boards. The addition of a metering pump ensures extremely high dimensional stability during the molding process of complex structures, providing a reliable guarantee for the production of high-quality drainage boards.
Dedicated Extrusion and Pressure Stabilization System
Utilizing a high length-to-diameter ratio (33:1) single-screw extruder ensures thorough plasticization and uniform mixing of PE materials.
Equipped with a metering pump (gear pump), a hallmark of high-end production lines, it provides extremely stable melt pressure and output, overcoming extrusion pulses.
Precision Molding and Shaping Unit
The core component is a dedicated wide-width die, whose internal flow channels directly form the three-dimensional structure of the drainage board.
A two-roll shaping device follows closely behind, rapidly and precisely pressing and shaping the three-dimensional structure in the molten state.
Highly Automated Continuous Production Line
From automatic feeding, extrusion, shaping, cooling, traction to fixed-length cutting and winding, the entire process is automated.
High Product Dimensional Accuracy and Structural Stability
The combination of the metering pump and the dedicated die ensures highly uniform and consistent key geometric parameters of the drainage board, such as the height of the protrusions and the dimensions of the channels, guaranteeing stable drainage performance.
High Production Efficiency and Cost Savings
Continuous production with high linear speed and large output. High degree of automation reduces manual operation and lowers per-meter production cost.
Excellent and reliable drainage performance
The precise molding system ensures the uniformity and integrity of the drainage channels, resulting in a final product with optimal water conductivity and long-term earth pressure resistance, ensuring extremely high engineering reliability.
Easy operation and stable quality
The central control system makes operation intuitive and convenient. Once process parameters are set, stable operation is achieved, minimizing human error and guaranteeing the uniformity and stability of product quality.
The core advantage of this PE drainage board equipment lies in its efficient and stable production of high-quality drainage boards with precise structure and excellent drainage performance through "pressure-stabilized extrusion" and "precision molding" technologies, providing reliable support for civil engineering projects.
PE drainage board production line: Drainage boards are made of high-density polyethylene through extrusion molding, forming a three-dimensional spatial support structure with conical protrusions. They are lightweight boards that combine drainage and water retention functions. These drainage boards are mainly used in underground engineering roof slabs or rooftop greening projects, providing multiple functions such as drainage, waterproofing, breathability, and moisture retention.
