Corrugating Medium (Fluting)
Corrugating medium (fluting) available in two grades: BKR (from primary cellulose fibre) and BKRS (with up to 20% recycled fibre content). Supplied in reels across a wide range of lightweight and standard grammages from 42 to 80 g/m².
Virgin fibre (BKR) and recycled blend (BKRS) gradesLightweight options from 42 gsmManufactured to STO 33039595-008-2020
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Paper for Inner Layers of Corrugated Board (Fluting) |
| Grades | BKR (virgin fibre); BKRS (with up to 20% recycled content) |
| Standard | STO 33039595-008-2020 |
| Basis Weight, gsm | 42; 45; 48.8; 65; 70; 72; 75; 80 |
| Moisture | 6–9% |
| Flat Crush Resistance (CMT30) | 70–95 N min (grammage-dependent; from 65 gsm upwards) |
| Burst Strength | 0.5–1.2 kgf/cm² min (grammage-dependent) |
| Supply Form | Reels |
| End Uses | Inner (fluted) layer of corrugated board, protective packaging |
| Origin | Kondopoga, Republic of Karelia, Russia |
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