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| 원래 장소: | 허난 화위안 |
| 브랜드 이름: | HUAYUAN |
| 인증: | GB/T19001-2016/IS09001:2015 |
| 모델 번호: | 25000078 |
Our multi-layer valve bags are engineered using premium all-wood pulp kraft paper as the core substrate. Through advanced multi-layer composite processes, these bags deliver exceptional durability and strength. The professional valve structure provides reliable, efficient protection for packaged contents.
This innovative design combines the load-bearing capacity of multi-layer materials with the convenient sealing advantages of valve technology. Unlike traditional open-mouth bags, no additional stitching or tying is required. After filling, the bag automatically seals, enhancing both operational efficiency and material protection.
Custom printing options are available, allowing for significant upgrades in practicality, sealing performance, and brand presentation. This makes our valve bags an ideal choice for businesses seeking packaging solutions that integrate functionality with marketing benefits.
Kraft paper substrate must be pure wood pulp stretched kraft paper, free from impurities, damage, or odors. This ensures structural stability and durability for multi-layer composites, meeting valve sealing stress requirements.
Optional composite materials include food-grade PE inner film that is odorless, non-toxic, bubble-free, and delamination-free. Waterproof coating uses environmentally friendly agents with even application and strong adhesion.
| Layer Configuration | Weight Capacity | Valve Options |
|---|---|---|
| 2-3 layers | 10-30kg | Internal or external valve types with precise positioning |
| 3-4 layers | 30-50kg | |
| 6 layers | 50-80kg |
Bag structure must be flat without wrinkles or damage. Valve connection to bag body must be firm without glue detachment. After filling, bags maintain stable shape and resist tipping or deformation.
Environmentally friendly water-based ink, free from odors and harmful heavy metals, complying with food-grade packaging standards. Colors are even with strong adhesion and no significant fading after friction.
Printing precision requires clear, distinguishable patterns and texts without ghosting or misprints. Color reproduction accuracy of at least 95% conforming to client specifications. Printing areas avoid valve sealing zones to prevent usage interference.
Our products serve multiple industries including building materials, chemicals, agriculture, food and feed processing, industrial raw materials, and foreign trade export sectors.
Standard capacities: 10kg, 20kg, 25kg, 50kg. Custom capacities from 10kg to 50kg available. Bag length, width, bottom depth, and valve dimensions adjustable to material density and automated filling equipment parameters.
Customizable 2 to 4 layers of kraft paper composite structure. Each layer's material and weight specified to ensure sufficient strength for different material packaging needs.
Internal and external valve types supported. Valve size and sealing method tailored to filling equipment and material characteristics (powder or granular) for efficient filling and reliable sealing.
Default natural kraft paper color with color printing. Custom base colors (white, brown, colored) and multi-color flexographic printing available. Brand logos, product information, warning labels, and multilingual markings supported. Free printing samples provided.
Options include PE inner film lamination, surface waterproof coating, anti-tear reinforcements for enhanced moisture resistance, leak protection, and durability. Valve position adjustable for different filling scenarios.
Export-grade packaging compliant with international transport standards and food-grade packaging meeting hygiene regulations. Additional features like anti-slip textures and handles available for improved usability.
Customers provide specifications including capacity, dimensions, layer count, valve type, printing designs, protection requirements, and quantity. We offer professional advice and accurate quotations.
After order confirmation, we produce free samples covering valve sealing performance, printing quality, structure, and materials. Production begins upon customer approval.
Following sample standards, products are manufactured on automated production lines with stringent quality control. Key inspection points include valve sealing integrity, multilayer composite strength, and printing accuracy.
Finished products undergo batch inspection before packaging and shipment. We provide logistics tracking and support documentation for foreign trade customs clearance, ensuring timely delivery.
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