The kraft paper open-mouth bag, also known as an open bag or open-mouth paper bag, is primarily made from high-strength kraft paper as its base material. It is manufactured through processes such as bag forming, cutting, and bottom reinforcement to create an open-style packaging container.
This bag features an open-mouth design that eliminates the need for complex valve structures, making the filling process simple and efficient. Its convenient design is well-suited for automated filling production lines, enhancing productivity in packaging operations.
Due to its robust construction and practical design, the kraft paper open-mouth bag is widely used for packaging solid particles and powdery materials across various industries, including industrial, agricultural, and construction sectors.
| Parameter | Specification |
|---|---|
| Kraft Paper Substrate | High-quality kraft paper made from 100% virgin wood pulp, free from impurities and odors |
| Composite Layer (Optional) | Food-grade PE film or waterproof coating for moisture resistance |
| Layer Configuration | 2 to 4 layers depending on load capacity (20kg: 2-3 layers, 50kg+: 3-4 layers) |
| Manufacturing Process | Precise cutting with neat edges, secure bottom stitching to prevent leakage |
| Sealing Compatibility | 5-10mm margin for sewing or tying, compatible with cable ties and sewing machines |
| Printing Process | Eco-friendly water-based inks with high-resolution multi-color printing |
Capacity & Dimensions: Standard capacities of 20kg, 25kg, and 50kg with custom options from 10kg to 80kg
Color Selection: Natural kraft brown and white standard, with custom color matching available
Printing Solutions: Multi-color flexographic printing for brand logos, product information, specifications, and multilingual labels