PP, PE and PC hollow boards are widely used in packaging, construction, advertising and logistics industries. Different raw materials have distinct melting characteristics, so one‑size‑fits‑all extrusion lines cannot guarantee stable board quality. Choosing a matched extrusion production line is critical to lower failure rate, improve output and control production cost.
Main Differences of PP / PE / PC Raw Materials
| Material | Key Features | Production Focus |
|---|---|---|
| PP | Good rigidity, lightweight, high heat resistance | Control melting temperature, avoid material degradation |
| PE | Tough, good impact resistance, low‑temperature performance | Adjust cooling speed for flat board forming |
| PC | High transparency, high impact strength, sensitive to moisture | Strict drying treatment, precise temperature control |
Note: PC material must be fully dried before extrusion, otherwise bubbles and streaks will appear on hollow board surface.
Core Points When Choosing Hollow Board Extrusion Line
✅ 1. Confirm applicable material range Check whether the extruder screw and barrel are specially modified for PP, PE and PC. General‑purpose screws may cause PC yellowing and poor plasticizing effect.
✅ 2. Match required board specifications Clarify board thickness, width, hollow structure and daily output. The line configuration differs greatly for thin packaging boards and thick construction boards.
✅ 3. Pay attention to cooling & forming system Hollow board shaping heavily depends on calibration and cooling units. Insufficient cooling will lead to warping, uneven thickness and unstable hollow structure.
✅ 4. Control auxiliary supporting devices For PC production, a professional drying system is necessary. Winder, cutter and haul‑off machine should coordinate with main extruder speed to reduce waste.
✅ 5. Consider after‑sales & customization capacity Some manufacturers only support single‑material production. Select suppliers who can adjust process parameters for three materials and provide technical guidance.
Final Summary
There is no universal perfect extrusion line for PP, PE and PC hollow boards. Start from your main raw material, finished board requirements and target capacity. Prioritize equipment with good plasticizing performance, complete auxiliary units and flexible parameter adjustment, so as to get stable‑quality hollow boards and maximize production benefits.
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