| Parameter | Specification |
|---|---|
| Base Material | 100% wood pulp extending kraft paper, 120-250 g/m² (adjustable per load requirements) |
| Additional Materials | Food-grade PE coating for moisture/leak resistance; High-strength kraft/composite paper valves |
| Adhesives | Environmentally friendly water-based glues, odorless, no heavy metal residues |
| Manufacturing Process | Fully automated valve bag machines; Smooth surfaces without burrs/wrinkles; Uniform stitching |
| Printing | 1-6 color flexographic printing with eco-friendly water-based inks; Position tolerance within 1mm |
| Quality Standards | Intact surfaces without damage/holes/stains; Clear printing; Dimensional deviations within ±5mm |
| Sealing Performance | No leakage or seepage after 24-hour inversion test at rated weight |
| Storage Conditions | 15°C-30°C temperature; ≤60% humidity; Max stacking height 1.2 meters; 2-year shelf life unopened |