Table 1. Basic Properties and Coating Weight of Base Papers.
| before treatment |
cat. starch treatment only |
cat. starch + hydrophobic additive treatment |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| basis weight (g/m2) | caliper | Gurley porosity | basis weight (g/m2) | caliper | Gurley porosity | basis weight (g/m2) | caliper | Gurley porosity | |
| base paper type | (μ) | (s) | (μ) | (s) | (μ) | (s) | |||
| (T410) | (T411) | (T460) | (T410) | (T411) | (T460) | (T410) | (T411) | (T460) | |
| bleached kraft (BK) | 45 ± 2 | 46 ± 2 | 12 ± 1 | 49 ± 2 | 56 ± 2 | 21 ± 1 | 49 ± 2 | 52 ± 2 | 42 ± 1 |
| white top cartonboard (WTC) | 280 ± 5 | 350 ± 5 | 85 ± 1 | 285 ± 5 | 387 ± 5 | 151 ± 1 | 285 ± 5 | 379 ± 5 | 276 ± 1 |
| test liner (TL) | 180 ± 2 | 205 ± 5 | 56 ± 1 | 184 ± 2 | 217 ± 5 | 102 ± 1 | 184 ± 2 | 215 ± 5 | 169 ± 1 |