Kraft paper valve bags are currently the most widely used high-end packaging containers in the powder and granular material industries. These environmentally friendly industrial packaging bags are made from multiple layers of high-strength kraft paper composites, ensuring durability and reliability.

The valve bags feature automatic filling and sealing functions, which, when combined with automated packaging equipment, enable high-speed and dust-free filling processes. This efficient design significantly improves packaging efficiency while maintaining cleanliness and safety standards.

Xinxiang Huayuan Paper & Plastic Bag Co., Ltd. boasts 19 years of professional bag manufacturing experience and fully automated production lines. Their products exhibit high strength, preventing bag breakage and powder leakage, with a smooth and neat appearance. These bags are widely used for large-scale packaging both for export and domestic markets across various industries.

• High-Strength Explosion Resistance: Constructed with multi-layer composite kraft paper made entirely from wood pulp, offering exceptional tensile strength, impact resistance, and compression durability.
• Dust-Free Filling and Excellent Sealing: Specially designed valve mouth compatible with automated filling machines for fast filling with minimal dust generation.
• Neat Stacking and Attractive Storage: Square and sturdy bag shape with high form stability for even stacking and enhanced warehouse space utilization.
• Superior Moisture and Dampness Protection: Optional inner waterproof film and lamination moisture barrier layer for humid climates and outdoor storage.
• Environmentally Friendly and Recyclable: Made entirely from paper-based materials, fully biodegradable and recyclable, complying with international environmental standards.
• Compatible with Fully Automatic Production Lines: Standardized bag dimensions for smooth operation on high-speed filling machines without jamming.

Material: Multi-layer high-quality stretch kraft paper, enhanced with PE coating or inner lining

Layers: Customizable 2, 3, or 4 layers according to requirements

Weight Capacity: 10kg, 15kg, 20kg, 25kg, 40kg, and 50kg options

Bag Types: Square bottom valve bags, flat bottom valve bags, and top-opening valve bags

Valve Designs: Inner valves, outer valves, and extended valves

Printing: 1 to 4 color high-definition flexographic printing with logo, company information, barcode, and English export layout customization

• Bags must be flat and square without wrinkles, damage, cracks, or visible glue marks
• Bottom bonding must be firm, passing drop and stacking tests without separation
• Valve openings properly centered to ensure smooth filling without clogging
• Print quality must be clear with accurate color registration, no ghosting or blurring
• Dimensions, weight, and number of layers strictly controlled according to specifications

Kraft Paper Valve Bags Designed for Automated Packaging of Powders and Fine Granules

• Chemical Powders: Titanium dioxide, carbon black, calcium carbonate, talcum powder, calcium hydroxide, cellulose, resin powder, pigments, additives
• Construction Materials: Putty powder, gypsum powder, cement mortar, dry mortar, thermal insulation mortar, grout agents
• Agricultural and Feed Products: Compound fertilizers, chemical fertilizers, feed pellets, feed additives, organic fertilizer powders
• Food Ingredients: Flour, starch, glucose powder, food additives
• New Energy and Advanced Materials: Lithium battery powders, silicon powder, graphite powder, nanomaterials, fine powders
• Export and Trade Packaging: Suitable for sea, land, and long-distance transportation with moisture-resistant and pressure-proof features

• Size Customization: Tailored dimensions based on filling equipment and load requirements
• Layer Customization: Choose from 2 to 4 layers of kraft paper with adjustable strength
• Moisture Protection: Standard paper, built-in PE inner film, or enhanced thick moisture-proof layers
• Valve Customization: Long or short valves, inner or outer valves, and leak-proof valves to prevent powder spillage
• Printing Customization: Support for Chinese and English logos, company addresses, contact details, product information, and barcodes
• Special Processes: Reinforced and thickened materials, explosion-proof edges, strengthened bottoms, and impact-resistant enhanced designs