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All-Paper Valve Bag: An Overview
Date：
2025-5-29
All-Paper Valve bag are eco-friendly packaging solutions designed for powdered and granular materials, such as cement, dry mortar, chemical powders, and food additives. Unlike traditional plastic or composite bags, they are made from 100% paper materials (typically kraft paper), offering recyclability, biodegradability, and sustainability—aligning with global green packaging trends.
1. Structure and Features
(1) Basic Structure
Material: High-strength kraft paper, optionally coated with PE or moisture-proof layers for premium grades.
Valve Design: Features a self-sealing valve (bottom/side) to prevent leakage after filling.
Layers: Typically 2–5 plies for enhanced tear resistance and moisture protection.
(2) Key Characteristics
|
Property |
Description |
|
Eco-Friendliness |
100% recyclable/biodegradable; complies with EU PPWR, FSC, etc. |
|
Breathability |
Allows air circulation, ideal for clump-prone materials (e.g., cement). |
|
Moisture Resistance |
Optional PE coating or barrier treatments for humid environments. |
|
Load Capacity |
Multi-ply construction supports 25–50 kg loads. |
|
Printability |
Easy-to-print surface for branding, barcodes, and certifications. |
2. Comparison with Traditional Bags
|
Criteria |
All-Paper Valve Sack |
PP Woven Bag |
Composite Bag (PP+PE/Aluminum) |
|
Material |
Pure kraft paper |
Polypropylene (PP) |
PP + PE/Aluminum foil |
|
Eco-Friendliness |
✅ Recyclable/biodegradable |
❌ Non-degradable |
❌ Hard to recycle |
|
Moisture Resistance |
⚠️ Requires coating |
✅ Excellent |
✅ Excellent |
|
Cost |
Higher (+20–30%) |
Low |
Moderate |
|
Applications |
Construction, food, chemicals |
Construction, agriculture |
Food, chemicals |
3. Primary Applications
（1）.Construction: Dry mortar, cement, tile adhesives.
（2）.Food: Flour, starch,milk powder (requires food-grade certification).
（3）.Chemicals: Pigments, mineral powders, fertilizers.
（4）.Pharmaceuticals: Excipients, herbal powders (sterilization required).
4. Market Trends & Innovations
（1）EU PPWR Regulation: From 2025, construction packaging must contain 30% recycled content, boosting demand for paper valve sacks.
（2）Food Industry Shift: Brands like McDonald’s and Nestlé are phasing out plastics for paper-based solutions.
（3）Technological Advances:
Moisture Barriers: Nano-coatings, bio-based PE laminates.
Reinforced Designs: Natural fiber blends (e.g., bamboo) for added strength.
5. Leading Manufacturers
（1）Europe: BillerudKorsnäs (Sweden), Mondi Group (Austria)
（2）China: Chenming Paper, Nine Dragons Paper (moisture-resistant variants)
（3）USA: International Paper (food-grade sacks)
6.Conclusion
All-paper valve bags are gaining traction in construction, food, and chemical sectors due to their sustainability, customization, and compliance with stringent regulations. With global plastic bans accelerating, their market share is poised for significant growth.
For specific technical specs (e.g., dimensions, grammage, barrier grades) or case studies, feel free to inquire!
Junda continuously improves its design capabilities and product development level based on industry trends and market demand, achieving diversified product innovation and meeting the diverse needs of customers.
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