21g Roll Tissue Paper Industrial Interleaving for Hardware and Glass Protection
This 21 g/㎡ roll tissue paper provides heavy‑duty interleaving protection for industrial applications – between glass sheets, metal plates, and finished hardware components. Higher basis weight (21g) gives increased tear resistance (tear index ≥3.0 mN·m²/g) and stiffness. The paper is acid‑free and sulfur‑free, preventing tarnish on silver or copper parts. Available in roll widths up to 1092 mm and lengths from 30 to 840 meters.
| Parameter | Specification |
|---|---|
| Basis Weight | 21 g/㎡ (±8% qualified tolerance) |
| Thickness | 0.03–0.05 mm |
| Density | ≥0.50 g/cm³ |
| Transparency | ≥70% (Qualified) |
| Whiteness | ≥75% (Qualified) |
| Average Breaking Length | ≥3.0 km |
| Tear Index | ≥3.0 mN·m²/g |
| Moisture Content | ≤10.0% |
| Roll Width | 787 / 889 / 1092 mm (custom slitting) |
| Roll Length | 30–840 m (flexible) |
Softwood kraft pulp with small amount of hardwood (20‑30%) for formation. High‑freeness beating (650‑750 mL). No filler to maintain cleanliness. Fourdrinier forming, pressing, drying at 105‑115°C. Light calendering (not heavy, to preserve bulk). Optional light starch sizing for dust control. Slit and rewound with minimal splices (≤5 per roll, joint width ≤15 mm). Inspected for pinholes and dirt spots.
- Glass Packaging – Interleaves between glass sheets; prevents scratches and moisture stains.
- Hardware & Tools – Wraps metal parts (nuts, bolts, dies); prevents corrosion and abrasion.
- Electronics – Separator for circuit boards during shipping; lint‑free and anti‑static properties.
- Automotive Components – Liner for machined aluminum parts; oil‑absorbent surface.
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