For over 17 years, VidePak has engineered high-performance woven packaging solutions, leveraging 30+ years of expertise, Austrian Starlinger machinery, and ISO-certified processes to deliver BOPP Laminated and Multi-Wall Woven Bags that redefine durability and functionality. Our BOPP Laminated Bags achieve tensile strengths of 18–22 N/mm² with moisture resistance <0.5 g/m²/24h, while Multi-Wall variants integrate kraft paper liners and multi-layer laminations to withstand 50 kg dynamic loads—ensuring optimal performance for fertilizers, chemicals, and construction materials. With a global client base spanning 60+ countries and an annual production capacity of 50 million units, VidePak’s commitment to precision and sustainability positions us as a leader in industrial packaging.
Section 1: Manufacturing Process – Precision at Every Stage
1.1 Extrusion & Filament Drawing
VidePak’s 16 extrusion lines, powered by Starlinger’s iQ series extruders, process 100% virgin polypropylene (PP) into uniform filaments. Key steps include:
- Resin preparation: PP pellets are dried at 80°C to eliminate moisture (humidity <0.02%).
- Melt extrusion: Temperatures of 230–260°C ensure consistent polymer flow, monitored via infrared sensors to ±1°C accuracy.
- Filament drawing: Filaments are stretched to 600–1,500 denier (D), achieving a tensile strength of 4–6 N/tex.
Quality Control:
- Denier consistency: Laser micrometers measure filament diameter every 5 seconds, rejecting deviations >2%.
- Thermal stability: Real-time DSC (Differential Scanning Calorimetry) ensures crystallinity levels of 60–70% for optimal weave integrity.
1.2 Weaving & Lamination
Using 100+ Starlinger circular looms, filaments are woven into fabric with densities of 10×10 to 14×14 threads/cm. For BOPP Laminated Bags:
- BOPP film application: 20–50 µm BOPP layers are heat-bonded at 180°C, achieving peel strength >3 N/15mm (ASTM D903).
- Multi-Wall construction: Kraft paper (80–120 g/m²) or PE-coated liners are laminated via W&H Prolamat adhesives, ensuring delamination resistance >90% (ISO 2411).
Quality Control:
- Weave uniformity: CCD cameras inspect for skipped threads or irregularities, with <0.1% defect tolerance.
- Adhesion testing: Samples undergo 48-hour humidity cycling (40°C, 95% RH) to validate bond integrity.
Section 2: Material & Structural Comparison
2.1 BOPP Laminated Woven Bags
- Applications: Ideal for hygroscopic materials like urea or cement due to IP67 waterproof ratings and UV resistance (1,200+ hours, ISO 4892-3).
- Key Parameters:
- Weight: 80–150 g/m²
- Load capacity: 25–50 kg
- Print quality: 8-color CMYK with 0.2 mm registration accuracy.
2.2 Multi-Wall Woven Bags
- Applications: Suited for abrasive aggregates (e.g., sand) with kraft paper liners (Mullen burst strength 200–300 kPa) and anti-static coatings (10⁶–10⁹ Ω/sq).
- Key Parameters:
- Layers: 2–5 plies with PE or aluminum foil interlayers
- Stackability: 12-layer pallet capacity
- Reusability: 15+ cycles.
Table 1: Technical Comparison
| Parameter | BOPP Laminated Bags | Multi-Wall Bags |
|---|---|---|
| Material | PP + BOPP film | PP + Kraft paper/PE |
| Thickness | 0.15–0.25 mm | 0.3–0.6 mm |
| Moisture Resistance | <0.5 g/m²/24h (ASTM E96) | <1.5 g/m²/24h (JIS Z 1539) |
| Load Capacity | 25–50 kg | 30–60 kg |
| Cost Efficiency | 15% lower than Multi-Wall | Higher initial cost |
Section 3: Quality Assurance & Sustainability
3.1 Advanced Quality Systems
- Starlinger’s IoT-enabled looms: Generate real-time data on thread tension (±5% tolerance) and weave density.
- In-line spectroscopy: Detects CaCO₃ filler content (5–20%) to ensure chemical stability.
3.2 Eco-Conscious Production
- Closed-loop recycling: 98% PP scrap is reprocessed into non-woven fabrics.
- Solar-powered lines: VidePak’s 2 MW rooftop solar array reduces CO₂ emissions by 1,200 tons annually.
Section 4: Client FAQs
Q1: How do I choose between BOPP Laminated and Multi-Wall Bags?
A: For humid environments (e.g., Southeast Asia), BOPP’s waterproofing excels. For heavy-duty abrasives (e.g., construction aggregates), Multi-Wall’s layered structure is optimal.
Q2: Are your bags compliant with EU food-grade standards?
A: Yes. Our FDA 21 CFR-compliant PP and soy-based inks meet EU Regulation 10/2011 for direct food contact.
Q3: What certifications ensure manufacturing quality?
A: VidePak holds ISO 9001, ISO 14001, and BRC GSV certifications, with third-party audits by SGS and TÜV.
Section 5: Global Compliance & Case Studies
- EU EN 277: BOPP bags exceed tensile requirements (≥15 N/mm² vs. 18–22 N/mm²).
- US ASTM D5260: Multi-Wall bags achieve puncture resistance >55 J/m.
- Case Study: A Nigerian fertilizer producer reduced spoilage by 40% using our BOPP Laminated Bags with UV stabilizers.
References
- Global Standards for Industrial Packaging (2024 Ed.).
- VidePak Technical Manual: Advanced Lamination Techniques (2024).
- Industry White Paper: Multi-Layer Woven Bag Innovations (2023).
VidePak Contact Information
Website: https://www.pp-wovenbags.com/
Email: info@pp-wovenbags.com
By integrating cutting-edge technology with rigorous quality protocols, VidePak’s BOPP Laminated and Multi-Wall Woven Bags deliver unmatched reliability. Explore our innovations in BOPP Laminated Woven Bags and Multi-Wall Packaging Solutions to optimize your supply chain’s efficiency and sustainability.