VidePak’s HDPE fabric bags deliver tensile strengths exceeding 45 N/cm² and moisture resistance rates below 0.03 g/m²/day, outperforming industry benchmarks by 25%, while our Starlinger extrusion lines achieve filament temperature stability within ±0.5°C—ensuring unmatched consistency across 16 production stages. For businesses prioritizing packaging that combines industrial-grade resilience with eco-friendly adaptability, VidePak’s 17 years of expertise, 100+ Starlinger circular looms, and global market reach across 60+ countries position us as the partner of choice for scalable, high-performance solutions.
The Manufacturing Process: A Symphony of Technology and Quality Control
1. Extrusion: The Foundation of Strength
The journey begins with virgin HDPE granules melted at 220–260°C in Starlinger’s twin-screw extruders. These machines maintain temperature deviations below ±0.5°C, ensuring uniform polymer flow and eliminating weak spots. The molten polymer is then extruded into flat tapes with a thickness tolerance of ±2 microns—critical for achieving consistent weave density.
Quality Control:
- Real-time infrared sensors monitor melt viscosity, adjusting screw speed automatically.
- Batch testing ensures HDPE density remains within 0.94–0.96 g/cm³, preventing delamination risks.
2. Tape Drawing & Weaving: Precision in Motion
Tapes are stretched at a 6.5:1 draw ratio using W&H’s tension-controlled godet rollers, aligning polymer chains to enhance tensile strength by 30% compared to standard 5:1 ratios. The stretched tapes are woven on Starlinger circular looms at 250 RPM, producing fabric with a weave density of 12×12 strands/inch².
Case Study: A South African mining client reported zero bag failures over 18 months under 50 kg dynamic loads, attributing this to VidePak’s optimized draw ratios and 99.7% weave uniformity.
3. Lamination & Coating: Barrier Excellence
A BOPP or PE coating is applied via Starlinger’s multi-layer laminators, operating at 150–180°C with a thickness accuracy of ±1.5 microns. This process achieves:
- Water Vapor Transmission Rate (WVTR): <0.03 g/m²/day (vs. 0.1 g/m²/day for uncoated HDPE).
- UV Resistance: 500+ hours of xenon-arc testing without degradation.
Quality Control:
- Laser gauges scan coating thickness every 5 seconds, triggering alerts for deviations.
- Adhesion tests confirm peel strength >4 N/15mm, exceeding ASTM D903 standards.
4. Printing & Bag Making: Branding Without Compromise
VidePak’s 30+ printing machines utilize 8-color flexographic systems with Pantone-matched inks, achieving ∆E<1.5 color accuracy. Post-printing, ultrasonic sealing ensures seam strengths of 350 N—45% higher than industry averages.
Why VidePak’s HDPE Bags Dominate the Market
1. Technical Superiority: Data-Driven Performance
| Parameter | VidePak Standard | Industry Average |
|---|---|---|
| Tensile Strength | 45–50 N/cm² | 35–40 N/cm² |
| Seam Burst Strength | 350 N | 240 N |
| Moisture Resistance | 0.03 g/m²/day | 0.12 g/m²/day |
| Print Registration Error | ±0.1 mm | ±0.3 mm |
2. Sustainability: Beyond Compliance
- Recyclability: 100% mono-material HDPE structure enables single-stream recycling.
- Energy Efficiency: Starlinger’s ECO series reduces energy consumption by 22% per ton vs. conventional extruders.
Product Specifications & Customization
| Feature | Details |
|---|---|
| Material | Virgin HDPE (FDA, EU 10/2011 compliant) |
| Sizes | 25–120 cm (W) × 30–150 cm (H) |
| Coating Options | BOPP, PE, Anti-static |
| Printing | Up to 8 colors, 1200 dpi resolution |
| MOQ | 15,000 units |
| Lead Time | 18–30 days (incl. customization) |
FAQs: Addressing Critical Buyer Concerns
Q: How does Starlinger equipment enhance production consistency?
A: Starlinger’s PLC-controlled extruders maintain melt temperature within ±0.5°C, reducing thickness variation to <2%—critical for load-bearing applications like construction aggregates.
Q: Can you handle small-batch custom prints?
A: Yes. Our digital printing division supports MOQs as low as 5,000 units with 48-hour sample turnaround.
Q: Are your bags certified for food contact?
A: All HDPE resins meet FDA 21 CFR 177.1520 and EU 10/2011 standards, ideal for agricultural packaging.
Conclusion
VidePak’s HDPE fabric bags redefine industrial packaging through Starlinger-engineered precision (45 N/cm² tensile strength, 0.03 g/m²/day WVTR) and branding versatility (Pantone-matched 8-color printing). With 568 employees, $80M annual revenue, and 16 extrusion lines, we empower global clients to merge durability with design.
References
- Made-in-China HDPE Bag Technical Reports (2024)
- Starlinger GmbH: Extrusion Line Technical Manuals
- Alibaba International Trade Data
VidePak Contact
Website: https://www.pp-wovenbags.com/
Email: info@pp-wovenbags.com
External Links
- Discover how our BOPP laminated woven bags achieve unmatched moisture resistance.
- Explore the science behind our HDPE manufacturing processes.