The kraft paper valve bag, also known as the glued bottom valve bag, is an environmentally friendly packaging container primarily made from high-quality kraft paper as the core material, ensuring durability and reliability.

Manufactured using internationally recognized advanced techniques, this bag meets modern standards for sustainable packaging. Its design specifically caters to granular and powdered materials, providing secure and efficient storage and transportation solutions.

Due to its versatility and robust construction, the kraft paper valve bag is widely used across various industrial and consumer packaging applications, serving as an ideal choice for sectors requiring safe and eco-friendly packaging options.

• Eco-friendly and Durable: Made from 100% wood pulp kraft paper that is biodegradable and recyclable with no harmful residues. Highly tough and resistant to tearing and pulling, reducing damage rates during packaging.
• Efficient Filling & Automation Compatible: Dedicated valve design connects directly to automated filling equipment, significantly increasing filling speed while preventing material dust dispersion.
• Sealed and Moisture-proof: Precise sealing technology automatically closes after filling, providing excellent airtightness. Customizable PE films and moisture-proof coatings prevent dampening and clumping.
• Neat Stacking & Storage: Forms standard cubic shape after filling with stable structure that doesn't topple or deform, optimizing storage and transportation space.
• Clear Printing & Branding: Smooth surface offers excellent printing adaptability with high-precision printing (≥300dpi) for vibrant, fade-resistant logos and information.
• Adjustable Toughness: Customizable single-layer, double-layer, or multi-layer kraft paper structures with static bearing capacity up to 50kg.

• Material: Virgin wood pulp stretched kraft paper, free from impurities and unpleasant odors
• PE Film: Minimum 25μm thickness, food-grade compliant with food contact standards

• Valve Design: Position deviation ≤3mm, width 80-100mm (customizable, ±1mm tolerance)
• Bag Making: Precise alignment, neat folding, smooth gluing with reinforced bottom
• Dimension Accuracy: Standard tolerance ±3mm, custom sizes adjustable for equipment compatibility

• Printing: Environmentally friendly, odorless inks with positioning deviation ≤5mm

We serve various sectors including building materials, chemical industry, food industry, feed and agriculture, and other miscellaneous industries. Our extensive experience allows us to understand unique requirements and provide tailored packaging solutions.

• Size Customization: Custom sizes for filling equipment, material weight, and storage space (typical capacities: 25kg, 50kg)
• Material Customization: Single-layer, double-layer, or multi-layer kraft paper structures with optional PE moisture-proof film
• Printing Customization: Company logos, product names, specifications, QR codes with multi-color printing using eco-friendly soybean ink (300dpi+)
• Process Customization: Inner valve (food industry) and outer valve (chemical industry) designs available

1. Requirement Discussion: Client communication for customization needs including size, material, weight capacity, printing, quantity, and delivery time
2. Sample Production: Quick sample production and client inspection with free modification adjustments
3. Contract Signing: Formal contract detailing specifications, quantities, delivery schedules, pricing, and after-sales services
4. Mass Production: Production following strict technical standards with multiple quality inspections
5. Logistics & Delivery: Arranged logistics with continuous delivery tracking for on-time arrival

• Professional Team: Experienced specialists delivering solutions for various industries and materials
• Cost-Effective Solutions: Competitive pricing as direct manufacturer with optimized custom plans
• Comprehensive Service: Dedicated customer service managing entire process from consultation to after-sales support