High-Stacking-Performance Mortar Paper Bags
Multi-wall kraft paper bags, recyclable, suitable for mortar packaging and handling.
Product Overview
The kraft paper mortar valve bag is a multi-layer, high-strength industrial packaging solution specially developed for dry powder mortar and construction powder materials. It features a composite structure made of multiple layers of paper combined with a PE moisture-proof film, ensuring excellent protection against moisture and other external factors.
Equipped with a self-sealing valve, the bag is compatible with automated high-speed filling production lines, streamlining the packaging process efficiently. The finished bags have a square and upright shape, providing strong stacking stability essential for safe storage and transportation.
This packaging solution offers multiple advantages including moisture resistance, leak prevention, impact resistance, and high toughness. It is ideally suited for onsite construction storage, long-distance transportation, and ocean freight export scenarios.
Key Features
- Dust-Free High-Speed Filling: Specialized valve design compatible with fully automated filling equipment, ensuring excellent sealing with minimal dust generation and high filling efficiency.
- Highly Durable Construction: Multi-layer composite structure of pure wood pulp stretch kraft paper with strong tensile strength and high toughness, resistant to tearing and impact.
- Comprehensive Moisture Protection: Integrated PE moisture barrier film provides complete waterproof and moisture-proof protection, preventing moisture absorption and caking.
- Uniform Bag Shape: Professional square glued bottom technique ensures neat, upright rectangular shape with smooth, non-slip surface for stable stacking and efficient storage.
Technical Specifications
| Parameter |
Specifications |
| Material Structure |
Standard 3-ply paper + 1-film structure, adjustable to 2-5 layers. Outer layer: 70-100g bleached/natural kraft paper. Inner layer: high-toughness natural stretch kraft paper with composite PE moisture barrier. |
| Specifications |
Customized weight capacities: 20kg, 25kg, 40kg, 50kg. Customizable dimensions including length, width, and folded edge widths. |
| Valve Technology |
Inner and outer valve designs compatible with mainstream high-speed filling equipment for precise filling and tight sealing. |
| Physical Performance |
Meets tensile and tear strength standards, withstands normal stacking pressure without bursting. Excellent airtightness and waterproof properties. |
| Printing Process |
Flexible plate printing technology supporting up to 6 colors. Clear, fade-resistant printing for brand logos, specifications, and markings. |
| Craftsmanship |
Square glued bottom technique with firm adhesion. Smooth bag body without wrinkles, damage, or delamination. Complies with industrial export standards. |
Applications
Construction Materials: Dry powder mortars, tile adhesives, bonding agents, putty powders, gypsum powders, leveling compounds, and waterproof powders.
Chemical Powders: Calcium carbonate, talcum powder, carbon black, various industrial dry powders, and chemical powders.
Logistics & Storage: Factory storage, domestic long-distance transportation, and on-site construction turnover.
Export Packaging: Moisture-resistant packaging for overseas shipping to Southeast Asia and Middle East, compliant with export regulations.
Customization Options
- Structural Customization: Multi-layer paper structures (2, 3, or 4 layers) with PE lamination, reinforced thickened materials, and inner/outer valve options.
- Size and Capacity: Custom dimensions for 20kg to 50kg capacities, including bag length, width, and bottom fold widths.
- Printing Services: 1 to 6 color logos, brand designs, product specifications, and contact details in Chinese and English.
- Additional Features: Breathable vents, anti-slip treatments, UV-resistant coatings, and custom packaging standards for special environments.