Packaging Board Series · High Bulk - GC1 / GC2
High Bulk - GC1 / GC2
High bulk folding box board in GC1 and GC2 — stiffness per gram, so the carton holds up on less fibre.
60g/m²
200g/m²
205g/m²
High bulk folding box board in GC1 and GC2 — stiffness per gram, so the carton holds up on less fibre.
High bulk board is bought to take weight out of a carton without taking stiffness out of it. The board is built as a layered structure — top coating over bleached sulphate pulp, a BCTMP core, bleached sulphate again, and back starch — and it is the low-density core that delivers caliper without grammage.
In practice it is used two ways: to lightweight an existing carton, and to replace manila board where the pack needs to look better than greyback allows. The back side is specified for adhesion, so it still laminates cleanly.
Typical applications — Lightweighting existing cartons; replacing manila board where appearance matters; general folding cartons
| Property | Typical value | Method |
|---|---|---|
| Basis weight | 200 / 215 / 230 g/m², ±3 % | GB/T 451.2 |
| Thickness | 295 / 330 / 350 µm, ±3 % | GB/T 451.3 |
| Stiffness MD | 6.5 / 7.5 / 9.0 mN·m, ±15 % | GB/T 22364 |
| Stiffness CD | 3.2 / 3.8 / 4.5 mN·m, ±15 % | GB/T 22364 |
| Cobb 60 s, top | ≤ 60.0 g/m² | GB/T 1540 |
| Surface roughness, PPS10 | ≤ 1.6 µm | GB/T 22363 |
| Folding endurance, CD | ≥ 15 | GB/T 457 |
| Surface strength | ≥ 1.5 m/s | GB/T 22365 |
| Ply bond | ≥ 130 J/m² | GB/T 26203 |
Figures are typical values from mill technical data, not a guaranteed specification. We agree the binding specification with you before the mill runs.
The weights we run are 60 · 200 · 205 g/m². Reel width is slit to your line; anything outside this list depends on the mill and the run, and is confirmed with the quotation.
Reels or sheets — slit to your line width.
Full technical data sheet and batch test report on request.
Send the basis weight, the reel width and the monthly volume. You get a quotation from someone who knows the mill, usually within one working day.
Tell us basis weight, reel width and monthly volume — you will get a quotation from someone who knows the mill, usually within one working day.