What Are the Key Benefits of Using a Hollowness Grid Board Extrusion Line for Packaging Production
2026-06-15
In modern packaging manufacturing, the Hollowness Grid Board Extrusion Line has become a transformative solution. Longchangjie provides advanced extrusion lines that produce lightweight, durable, and recyclable hollow grid boards. These boards are replacing traditional corrugated plastic and solid sheets across industries such as logistics, automotive, and consumer goods.
Key Benefits of the Hollowness Grid Board Extrusion Line
| Benefit | Description | Impact on Packaging Production |
|---|---|---|
| Weight Reduction | Hollow structure reduces material usage by 30–50% | Lower shipping costs and easier handling |
| High Rigidity | Grid design maintains strength even with less material | Protects heavy or fragile products during transit |
| Recyclability | 100% recyclable PP/PE output | Meets global sustainability regulations |
| Cost Efficiency | Lower raw material and energy consumption | Reduces per-unit production cost by up to 20% |
| Customizable Dimensions | Width, thickness, and cell size can be adjusted | Fits diverse packaging needs without retooling |
A Longchangjie Hollowness Grid Board Extrusion Line also integrates inline printing, cutting, and stacking, which eliminates secondary processing steps. The extrusion speed reaches 15–25 m/min depending on board thickness, making high-volume orders feasible within tight deadlines.
Below is a comparison between conventional solid sheet extrusion and the Hollowness Grid Board Extrusion Line regarding key packaging metrics.
| Metric | Solid Sheet Extrusion | Hollowness Grid Board Extrusion Line |
|---|---|---|
| Material density (g/cm³) | 0.95 | 0.45–0.60 |
| Flexural modulus (MPa) | 800 | 650 (sufficient for most packaging) |
| Recycled content capacity | ≤30% | ≤100% |
| Energy use per ton (kWh) | 650 | 480 |
Frequently Asked Questions (FAQ)
Q1: Can a Hollowness Grid Board Extrusion Line handle post-consumer recycled (PCR) materials without compromising board strength?
A1: Yes. Longchangjie extrusion lines are engineered with dual-stage filtration and degassing systems that remove contaminants from PCR flakes or pellets. The screw design applies lower shear stress, preserving polymer chain length. For packaging applications requiring impact resistance above 15 kJ/m², a blend of 70% virgin PP and 30% PCR works reliably. If 100% PCR is used, board stiffness drops by roughly 12–18%, which is still acceptable for non-structural packaging like dividers or pallet sheets. The line’s temperature control zones can be adjusted automatically to stabilize melt flow.
Q2: How does the Hollowness Grid Board Extrusion Line reduce production waste compared to traditional extrusion methods?
A2: Traditional solid sheet extrusion produces edge trim waste of 8–12% due to die swell and width variations. A Longchangjie Hollowness Grid Board Extrusion Line uses a closed-loop width control system that reduces edge trim to under 3%. Additionally, the hollow grid design requires less cooling water (about 35% less), which minimizes rejected boards caused by warping. Any start-up or color-change scrap can be fed back into a side crusher directly attached to the line, achieving near-zero waste during steady production. Over a 24-hour shift, this saves approximately 150–200 kg of material for a mid-sized line.
Q3: What maintenance frequency is required for a Hollowness Grid Board Extrusion Line running three shifts per day?
A3: For a Longchangjie Hollowness Grid Board Extrusion Line operating continuously (21–24 hours/day), the standard maintenance schedule is: daily (clean die lip and check vacuum pumps – 15 minutes), weekly (inspect gearbox oil and calibrate haul-off rollers – 1 hour), monthly (replace screen packs and clean cooling tank filters – 2 hours), and every 4,000 running hours (change extruder screw segments and bearings – full day). The line includes predictive maintenance alerts via PLC, so unplanned downtime stays below 2%. Packaging producers using these lines typically achieve 92–95% overall equipment effectiveness (OEE) after the first three months.
Why Longchangjie Leads in Hollowness Grid Board Extrusion Line Technology
Longchangjie integrates German-engineered gearboxes and Italian flat dies into every Hollowness Grid Board Extrusion Line. The control system supports Industry 4.0 data logging, allowing packaging plants to track energy efficiency per kilogram of output. Over 47 global packaging companies have switched to Longchangjie lines since 2020, reporting an average ROI of 9 months.
Contact Us
Upgrade your packaging production with a reliable Hollowness Grid Board Extrusion Line from Longchangjie. Request a free line configuration based on your desired output capacity (200–800 kg/h). Contact us today for a technical consultation, sample production test, or on-site virtual demo. Email [email protected] or visit our contact page to speak directly with an extrusion engineer.
