Customizable Printing Kraft Paper Valve Bags with High Tensile Strength and Recyclable Biodegradable for Industrial Packaging
Product Details
| Moistureresistance: | High Moisture Resistance | Application: | Packaging Of Cement, Flour, Chemicals, And Powders |
|---|---|---|---|
| Environmentalfriendly: | Recyclable And Biodegradable | Closure: | Valve Closure For Automatic Filling |
| Strength: | High Tensile Strength | Thickness: | 70-120 Gsm |
| Bagsize: | Customizable (e.g., 10kg, 25kg) | Printing: | Customizable, Up To 6 Colors |
| Highlight |
Recyclable And Biodegradable Paper Valve Bags,High Tensile Strength Kraft Paper Valve Bags,Customizable Printing Industrial Valve Bags |
||
Product Description
The kraft paper valve bag, also known as the block bottom valve bag or square bottom valve bag, is a premium packaging product specifically designed for industrial powders and granular materials. It is manufactured using a multi-layer composite process with high-strength virgin kraft paper, combined with a fully automatic valve self-sealing structure.
Once filled, the bag forms a square and three-dimensional shape, ensuring stable stacking and excellent sealing performance. This design is well-suited for automated high-speed filling production lines, making it widely used across various industries such as building materials, chemicals, agricultural supplies, and food.
This packaging solution offers three core advantages: high strength, strong adaptability, and eco-friendly recyclability. It effectively addresses common industry challenges such as bag breakage, powder leakage, stack collapse, inefficient filling, and excessive storage space. As a result, it serves as a mainstream and preferred packaging option for industrial materials both domestically and internationally.
Utilizing a reinforced square-bottom molding process, the bags maintain a straight and upright shape after filling. They exhibit strong self-support without bulging or deformation. Pallets stacked with these bags remain neat, slip-resistant, and stable, allowing for higher stacking layers. This significantly enhances container and warehouse space utilization, reduces storage and cross-border logistics costs, and is suitable for various long-distance sea and land transportation scenarios.
Equipped with optional internal and external valves, these bags are compatible with fully automatic powder filling machines. After filling, the valve automatically closes under the weight of the material, eliminating the need for manual stitching or heat sealing. This greatly reduces labor costs and increases filling efficiency by over 40%. The tight seal completely prevents fine powder leakage and dust emissions, keeping the workshop environment clean.
Constructed from 2 to 4 layers of virgin high-strength kraft paper composite, the material has uniform weight and excellent toughness. It resists stretching, puncturing, and dropping impacts. These bags can reliably carry 10 to 50 kilograms of material without tearing or cracking during handling, stacking, and transportation, greatly reducing material loss.
The bags support customizable precision ventilation holes that quickly release trapped air during filling. This effectively solves issues of bag swelling and bursting in high-speed filling and fine powder processes. The design is compatible with various advanced automated filling equipment.
Made from pure kraft paper, the bags contain no harmful additives and are 100% recyclable and biodegradable. They comply with the European Union packaging environmental directives and domestic industrial packaging standards, avoiding environmental compliance risks. This makes them suitable for export to many regions worldwide, including Europe, America, and Southeast Asia.
When empty, the bags can be folded flat for compact storage, greatly saving warehouse space and container loading volume. Compared with traditional packaging, they effectively reduce logistics and storage costs, offering outstanding cost-effectiveness, especially for bulk purchases.
| Parameter | Specifications |
|---|---|
| Paper Material | High-quality, all-wood pulp stretch kraft paper, with a single layer weight ranging from 70 to 120 grams per square meter. The paper maintains uniform thickness, stable tensile strength, and is free from damage or impurities, meeting the ISO 536 paper testing standards. |
| Valve Type | Two options available: inner valve (mainstream, commonly used design featuring automatic self-sealing functionality) and outer valve (customized model that facilitates manual filling). Standard valve width ranges between 10 and 13 centimeters, ensuring a tight seal that prevents powder leakage. |
| Bottom Construction | Crafted using a high-temperature glued square base technique, creating a seamless and compact structure. The adhesive bond is strong and durable, capable of bearing weight without coming apart or detaching. |
| Ventilation | Customers can choose either single-point or multi-point precise venting holes. These provide uniform aeration while preventing powder escape and bag bursting. |
| Protective Features | Optional polyethylene (PE) inner linings and single or double-sided waterproof coatings. These treatments offer moisture resistance and prevent fine powder leakage, making the product suitable for humid storage conditions. |
This sector primarily involves the packaging of various construction powder materials. Products include putty powder, tile adhesives, cement mortar, gypsum powder, lime powder, waterproof powder, joint fillers, and bonding agents. These powders require specialized packaging solutions to ensure safety and maintain quality during storage and transportation.
The chemical industry covers packaging for industrial chemical powders such as carbon black, white carbon black, talc powder, heavy calcium powder, bentonite, resin granules, chemical fillers, pigment powders, and additives. These materials demand packaging that can withstand chemical properties and environmental factors.
Packaging solutions in this industry include those for compound fertilizers, organic fertilizers, water-soluble fertilizers, feed powders, and soil conditioners. These agricultural powders and granules require protective packaging to maintain their efficacy and facilitate ease of transportation.
Additional applications encompass packaging for food additive powders, mineral fine powders, refractory materials, abrasive powders, and other types of dry powders and granules. Each category benefits from customized packaging designed to preserve material quality and support diverse usage scenarios.
- Size Customization: Width, length, and bottom gusset widths can be tailored to fit material weights ranging from 10kg to 50kg or other special weight requirements, ensuring precise matching with the material's bulk density.
- Material Customization: Combining 2 to 4 layers of kraft paper is possible, with options for 70g to 120g paper weights. Additional features such as PE liners, waterproof coatings, and anti-slip layers are also available.
- Process Customization: Packaging can be modified with options like internal or external valve switching, adjustment of ventilation holes, reinforcement and thickening, leak-proof enhancements, suitable for high-speed filling, long-distance maritime transport, and humid storage environments.
- Printing Customization: Printing options range from 1 to 6 colors using flexographic printing or high-definition methods. Branding elements such as company logos, product specifications, net weight, and bilingual export information can be printed.
- Appearance Customization: Packaging is available in natural kraft or white kraft paper, with support for lamination and other special finishing treatments to meet specific aesthetic requirements.
Product Highlights
Customizable Paper Valve Bags Engineered for Strong Tear Resistance and Recyclable Biodegradable in Industrial Packaging Product Description The kraft paper valve bag, also known as the block bottom valve bag or square bottom valve bag, is a premium packaging product specifically designed for ...
Easy Opening And Filling Pasted Paper Valve Bags Multiwall 10kg To 25kg Weightcapacity
Easy Opening And Filling Pasted Valve Packaging Bags Multiwall Construction Offers Strength And Convenient Valve Access Product Description: The self-adhesive valve multi-layer paper bag is a type of high-strength packaging bag with a multi-layer structure, specifically designed for heavy-duty ...
Typically 80 to 120 Grams Per Bag Paper Valve Sacks 25kg Size Featuring Optional Polyethylene or Other Inner Coatings
Typically 80 to 120 Grams Per Bag Paper Valve Sacks 25kg Size Featuring Optional Polyethylene or Other Inner Coatings Product Description: The paper valve bag is made from high-quality multi-layer kraft paper, offering excellent tear resistance and durability. It is specifically designed for ...
Self Sealing Industrial Multiwall Paper Bags For Bulk Powdered Goods
Self-sealing Multiwall Paper Bags Valve Mouth Engineered for Optimal Protection and Easy Handling of Bulk Powdered Goods Product Description: Paper valve bags are made from high-quality multi-layer kraft paper, offering excellent tear resistance and durability. These bags are specifically designed ...
Foldable Garden Brown Paper Yard Waste Bags Durable 60g 120gm2 Paper Type Paper Yard Trash Bags
Foldable Garden Waste Bags Featuring Durable 60g120gm2 Paper Type Ideal for Yard Leaf Grass and Garden Cleanup Solutions Product Description: Lawn paper bags are environmentally friendly packaging products specially designed for lawn care, gardening, and agricultural materials. These bags are ...
Please use our online inquiry contact form below if you have any questions, our team will get back to you as soon as possible.
