Waterproof Moisture-Proof Kraft Paper Valve Bag with Customizable Size and High Strength Tear Resistance for Industrial Packaging
Product Details
| Thickness: | 80-120 Gsm | Usage: | Packaging Cement, Chemicals, Food Products |
|---|---|---|---|
| Size: | Customizable (e.g., 50x70 Cm) | Paper Type: | 60g-120g/m2 |
| Productname: | Kraft Paper Valve Bag | Printing: | Custom Logo Printing Available |
| Bagsize: | 50kg Standard | Feature: | Waterproof Moisture-Proof |
| Highlight |
heavy duty kraft paper valve bag,tear resistant packaging valve bag,industrial commercial kraft paper bag |
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Product Description
The kraft paper valve bag is an industrial automated packaging solution specifically engineered for powders and fine granular materials. Constructed from multi-layer, fully wood pulp stretched kraft paper with an integrated valve filling structure, this product offers superior performance for modern industrial packaging requirements.
Designed for compatibility with high-speed automatic filling production lines, these bags enable rapid filling, secure sealing, and organized stacking. As the mainstream eco-friendly packaging solution, they effectively replace traditional woven plastic bags across building materials, chemicals, minerals, and agricultural supply industries.
Made entirely from paper materials, these bags are fully recyclable and naturally degradable, free from plastic pollution. Compliant with EU packaging regulations, REACH standards, and global plastic restriction mandates.
Innovative valve-style air intake filling structure eliminates manual sewing or tying requirements. Direct integration with automated filling machines enables high-speed operation and significant labor cost reduction.
Constructed from 2 to 4 layers of thickened kraft paper composite, providing excellent toughness, impact resistance, and tear resistance. Maintains shape integrity without deformation, breakage, or leakage.
Optional PE coating inner layer provides effective moisture barrier protection. Self-closing valve design prevents powder leakage and dust dispersion during transportation and handling.
Square, three-dimensional bag shape ensures excellent stacking stability. Enhances warehouse storage efficiency and container loading capacity, reducing per-unit shipping and storage expenses.
Smooth paper surface supports multi-color high-definition printing for prominent display of logos, company information, and product parameters, serving as direct brand showcase.
Customizable vent holes address gas expansion issues when filling powders like carbon black and ultra-fine materials, preventing bag bursting and bulging phenomena.
| Parameter | Specification |
|---|---|
| Material | High-quality full wood pulp stretch kraft paper with optional PE coating |
| Layers and Weight | 2, 3, or 4 layers with standard weight per layer ranging from 70g to 100g |
| Load Capacity | 10kg to 50kg, with customization available for standard weight requirements |
| Structural Design | Corner valve design and flat valve design options |
| Moisture Resistance | Standard moisture-proof treatments to reinforced PE coatings for high humidity environments |
| Production Quality | Strong adhesive bonding prevents delamination, edge damage, or leakage from pinholes |
| Stacking Performance | Stable stacking in 8 to 12 layers without deformation or collapse |
| Equipment Compatibility | Compatible with automatic powder filling machines, screw-type fillers, and pneumatic equipment |
| Operating Temperature | -20°C to +60°C for typical industrial environments |
Tile adhesives, bonding agents, putty powders, dry-mixed mortar, cement, gypsum powder, waterproof powders, and thermal insulation mortar.
Carbon black, white carbon black, silica, titanium dioxide, pigments, dyes, resin powders, flame retardants, and additive powders.
Mineral powder, talcum powder, calcium carbonate, quartz powder, bentonite, heavy calcium powder, and kaolin.
Fertilizers, compound fertilizers, feed additives, premixes, and biological organic fertilizers.
Refractory castables, refractory powders, insulation powders, and industrial furnace materials for high-temperature applications.
Various ultra-fine powders, granular materials, and packaging for industrial raw materials.
Bespoke packaging sizes tailored to customer filling weight and equipment specifications, including customized length, width, and height dimensions. Support for unconventional and special sizes.
Flexible combination of 2 to 4 paper layers, producing light versions for fine powders and thicker versions for heavy powders.
Options ranging from ordinary styles without lamination to single-side lamination, double-side lamination, and enhanced moisture-proof versions for high-humidity environments.
Additional features including air vents, explosion-proof holes, exhaust valves, reinforcement elements, and anti-slip textures.
Single-color or multicolor printing services incorporating client logos, company addresses, contact information, product parameters, and barcode designs.
Comprehensive packaging solutions including outer box packaging, pallet packaging, and film wrapping reinforcement suitable for long-distance sea transportation.
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