What is advantage of the Customized Spiral Die-head

The Customized Spiral Die-head in a plastic pipe extrusion line — especially for corrugated or structured-wall pipes — offers several key advantages compared to standard die-heads. Here’s a breakdown:

✅ 1. Tailored Flow Channel Design

 Custom spiral die-heads can be precisely engineered to match the melt characteristics of the specific polymer (PE, PP, PVC, etc.) and pipe type.

Ensures even melt distribution and optimized wall thickness, especially critical in multi-layer or large-diameter pipes.

➡️ Result: Better mechanical properties, less material waste, and fewer defects.

✅ 2. Support for Multi-Layer Co-Extrusion

Custom die-heads are often designed to handle 2–3 or more material layers, enabling:

Inner layer: anti-static or smooth

Middle layer: recycled or structural foam

Outer layer: UV-resistant or color-coded

➡️ Result: Improved performance and lower production cost using recycled core materials.

✅ 3. Optimized for High Throughput

A customized spiral die-head can be tuned for high-speed extrusion, reducing back pressure and stabilizing melt flow.

➡️ Result: Higher production efficiency with consistent quality at faster line speeds.

✅ 4. Adaptability for Pipe Types and Sizes

Custom die-heads are made to support specific applications:

Double-wall corrugated pipes

Smooth-wall pressure pipes

Large-diameter structured-wall pipes

➡️ Result: Manufacturers can serve niche or high-demand markets with exact specifications.

✅ 5. Reduction in Die Lines and Weld Marks

Well-engineered spiral flow design leads to seamless fusion of melt streams, reducing visible weld lines.

➡️ Result: Smooth internal/external surfaces, especially important in drainage and electrical conduits.

✅ 6. Compatibility with Calibration Sleeves and Molds

Customized die-heads are matched with calibration sleeves, vacuum tanks, and corrugator molds for better synchronization.

➡️ Result: Smooth startup, quick switch-over, and lower scrap rate.

Summary Table:

      Advantage                                                   Benefit

Custom flow channels                      Uniform wall thickness, fewer defects

Multi-layer support                           Advanced pipe structures, material cost savings

High-speed optimization                  Greater productivity, stable output

Application-specific design               Serves special markets (e.g. cable ducts)

Fewer weld lines                              Better surface quality and mechanical strength

Full system compatibility                  Smoother operation with downstream equipment