PVC Door Board Production Line

Engineering the Wide-Format Future: Kangju’s 1000mm PVC Door Board Production Line Redefines Architectural Extrusion

In the modern construction sector, the demand for wide-format PVC door boards is surging. Consequently, this growth is driven by the urgent need for seamless, waterproof, and termite-resistant interior solutions. However, extruding a profile of this substantial width remains one of the most significant challenges in plastic engineering, particularly when the goal is to maintain a flat, tension-free surface.

Today, Kangju Machinery is proud to showcase 1000mm PVC door board production line, a system designed not just for size, but for structural perfection.

Challenge of “Melt Distribution” in Wide Boards

When extruding at a 1000mm width, the primary enemy is uneven flow. To begin with, if the plastic melt reaches the edges of the die later than the center, internal stresses are inevitably locked in. Consequently, this discrepancy leads to significant warping, which is commonly referred to as the “banana effect.”

Kangju’s PVC door board extruder model utilizes customized die with a multi-zone internal heating system. This ensures that the PVC melt maintains a perfectly uniform velocity across the entire meter-wide exit, resulting in a board that remains flat even under extreme temperature fluctuations.

Power Meets Precision: Conical Twin-Screw Extruder

To push the volume of material required for a heavy-duty 1000mm door, we utilize the SJZ series conical twin-screw extruder.

• Vertical High-Torque Gearbox: Engineered to handle the massive backpressure generated by wide-format molds.
• Intelligent Vacuum Degassing: Vital for removing volatiles from high-filler formulas, ensuring the 1000mm board has a solid, bubble-free internal structure.

Advanced Calibration: Managing the “Thermal Footprint”

A board this wide holds an immense amount of heat. Traditional cooling isn’t enough. Our line features an Extended 8-Meter Vacuum Calibration Table with synchronized water-ring cooling.

In addition to managing flow, the cooling process is equally critical. By specifically controlling the cooling rate of the top and bottom surfaces independently, we thereby eliminate the “curling” effect. Consequently, this precise thermal management delivers a finished product that is perfectly flat. As a result, the material is ready for secondary processes – such as lamination or UV printing – immediately after the cutting stage.

FAQ:

Q1: Why is the 1000mm width considered a “technical barrier” in PVC extrusion?

A: Beyond 800mm, the weight of the melt and the cooling contraction forces become exponential. Without a high-precision Internal Cooling Mandrel and a robust SJZ92 extruder, the center of the board will stay hot too long, causing structural collapse or “sinking” marks. Kangju’s line uses specialized internal support structures to prevent this.

Q2: Can this door board production line produce the popular WPC door boards as well?

A: Absolutely. By adjusting the screw torque parameters and the feeding system, this door board making machine is fully compatible with WPC formulas containing up to 60% wood flour. We provide specialized bimetallic screws to handle the abrasive nature of wood fibers.

Q3: What surface treatments can be applied to the boards produced by this line?

A: We engineer our boards with high surface energy, making them ideal for online hot-stamping, PUR lamination, or direct digital printing. We control surface flatness within a ±0.2mm tolerance, ensuring a perfect foundation for high-gloss finishes.

Why choose Kangju Machinery?

Planning a plant is complex, but partnering with Kangju Machinery simplifies the transition from blueprint to production. With over 15 years of specialized experience in plastic extrusion line, Kangju does not just supply machines; we deliver “Turn-key Intelligence”.

• 15+ Years of Technical Mastery: Proven expertise in pipe / profile / panel / sheet extrusion.
• Customized Molds: Our in-house mold design team uses flow-simulation software. This ensures your PVC wall panels have uniform thickness and a flawless finish from the first meter.
• On-Site Commissioning: We provide global on-site installation and technician training, ensuring your local team is fully capable of maintaining peak production efficiency.

Contact Kangju:

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• Email: [email protected]
• Tel / Whatsapp: +86-13915693241