High Tear Resistance Kraft Paper Valve Bags with Moisture-Proof Lining and Customizable Sizes for Industrial Packaging
Product Details
| Bagsize: | Customizable (commonly 25kg, 50kg) | Tearresistance: | Strong Tear Resistance |
|---|---|---|---|
| Printingoptions: | Custom Logo And Text Printing Available | Weightcapacity: | Up To 25 Kg |
| Closuretype: | Valve Closure For Automatic Filling | Usage: | Packaging Of Cement, Flour, Chemicals, And Powders |
| Tear Resistance: | High Tear Resistance | Productname: | Paper Valve Bags |
| Highlight |
moisture-resistant paper valve bags,kraft paper valve bags,automatic filling valve bags |
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Product Description
- Valve Mouth Self-Sealing and Zero Dust Leakage: Inner and outer valves are precisely compatible with fully automatic filling equipment. After filling, air pressure automatically seals the valve, eliminating manual sealing and preventing powder dust, leakage, and contamination.
- Stable Stackable Three-Dimensional Square Bottom: Integrally formed square bottom maintains firm, upright shape. Even load distribution prevents tilting or collapsing, ideal for high-level warehouse storage and container sea transportation.
- Multi-layer Thickened Material with Strong Impact Resistance: Made from 2 to 4 layers of full wood pulp stretch kraft paper with high tensile strength and toughness. Resists tearing and punctures during long-distance transport and handling.
- Moisture-Proof Lining to Prevent Caking and Deterioration: Food-grade PE moisture-proof inner membrane isolates air, water vapor, and humidity. Prevents ultrafine powders from absorbing moisture, caking, discoloring, or losing performance.
- Compatible with High-Speed Automated Production: Uniform shape and hardness with precisely fitting valve mouth compatible with various domestic and international powder automatic filling machines.
- Clear Printing and High Brand Recognition: Supports high-definition flexographic and full-page printing for company logos, product models, net weight, standards, and export labels.
| Parameter | Specifications |
|---|---|
| Paper Layers | 2-layer, 3-layer, and 4-layer options using native kraft paper (80-100 g/m²) |
| Inner Lining | Standard PE moisture-resistant, anti-static PE, or high barrier aluminum foil inner film |
| Bag Bottom | Square glued bottom formed integrally with double-layer heat seal reinforcement |
| Valve Options | Internal valve (mainstream), external valve, and extended valve for high-capacity production |
| Dimension Tolerances | ±5mm for length, width, and height |
| Print Quality | Precise color registration without ghosting, missing prints, or dirty spots |
| Sealing Standards | Tight and secure valve closure with no light transmission, powder leakage, or gaps |
- Chemical Powder Industry: Carbon black (high-pigment, conductive, acetylene, rubber carbon black), fumed silica, titanium dioxide, zinc oxide, nano powders, chemical fillers, and additive powders
- Pigment and Coating Industry: Iron oxide pigments, organic pigments, pearl powder, wax powder, matting powder, and color masterbatch powders with moisture protection and color lock features
- Building Material Dry Powder Industry: Tile adhesive, putty powder, dry mortar, gypsum powder, heavy calcium carbonate, talcum powder, and insulation powders with stable stacking and high load-bearing capacity
- Rubber and Plastics Industry: Rubber reinforcing powders, plastic fillers, and modified powders with anti-static and dust-proof features for automated feeding systems
- Specification Customization: Standard sizes of 10kg, 20kg, and 25kg. Custom sizes from 5kg to 50kg and special bag types available
- Material and Process Customization:
- Standard Version: Multi-layer kraft paper with PE moisture-proof inner lining
- Anti-Static Version: Multi-layer kraft paper with anti-static inner lining for carbon black and nano powders
- Printing Customization: 1 to 4-color high-definition flexography for corporate logos, company names, product models, net weight, batch numbers, standards compliance, shipping marks, English versions, QR codes, and contact information
- Detail Customization: Extended valve openings, reinforced bag bottoms, full lamination for waterproofing, anti-slip surfaces, special breathable designs, customized hardness, and gram weight adjustments
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