Customizable Moisture Resistant Multiwall Paper Bags with High Load-bearing Capacity for Industrial Use

These colorful multi-layer kraft paper valve bags are manufactured from high-strength colored kraft paper as the base material. Featuring a 2 to 4 layer laminated structure combined with patented valve technology, this innovative design creates an eco-friendly industrial packaging solution specifically engineered for dust-free filling and transportation of granular and powdered materials weighing between 25 to 50 kilograms.

With robust construction and advanced valve systems, these bags ensure secure storage and handling, making them ideal for various industrial applications.

• Multi-layer Durable Structure: Crafted from high-quality colored kraft paper (80-120g/m²) with 2-4 layers bonded using water-based environmentally friendly adhesives. Features tensile strength of ≥4.5kN/m (machine direction) and ≥3.5kN/m (cross direction), with bursting strength exceeding 1400kPa. Withstands drops from 2 meters without damage.
• Vibrant Custom Color Printing: Supports spot color and four-color process printing with vivid colors and strong adhesion that resist abrasion and fading. High-definition print quality enhances brand recognition and product differentiation.
• Valve Seal Design: Options for built-in or external valves with ultrasonic heat sealing technology. Automatically closes during filling to prevent powder leakage and dust generation, compatible with automated filling lines.
• Moisture and Dust Barrier: Optional PE liner provides moisture-proof and leak-proof protection while blocking water vapor and dust, significantly extending material shelf life.
• Eco-friendly and Biodegradable: Made from renewable plant fiber kraft paper, recyclable and naturally degradable. Complies with plastic ban requirements and green supply chain standards.
• Space-saving Stackability: Square bottom and three-dimensional structure enables neat, stable stacking that resists sliding and collapse, improving storage space utilization.