Smithpack - Menu

Corrugated Packaging Manufacturer

- Grade Code prefix letters show flute (eg “BC:” = “BC flute”).
- Numeric Digits indicate the industry’s traditional nominal liner weight code for the equivalent perfomance grade.
- Suffix letters indicate Top & Bottom liner paper types. eg: K = Kraft paper liner, T & L = Testliner recycled paper liners & W = White liner.

*Note: Kraft paper liner consisits of both a 100% virgin paper top ply (from sustainably managed softwood forests) and a base ply incorporating both virgin and good quality recycled paper fibres. Testliner grades use 100% recycled material with the L grade having the better recycled base material content with stronger fibres and a smoother surface.*

*All grades are subject to availability and superior grades can be substituted for supply chain expediency unless otherwise directed. *

Grade | Target ECT (kN/M) | Typcial Burst Value (KPa) | Typical g/m2 |
---|---|---|---|

B:125T.T | 3.0 | 300 | 269 |

B:125L.T | 3.4 | 440 | 280 |

B:150T.T | 3.7 | 520 | 325 |

B:150L.T | 4.0 | 560 | 340 |

B:200T.T | 4.2 | 590 | 386 |

B:200L.T | 4.3 | 620 | 400 |

B:125K.T | 3.5 | 650 | 294 |

B:150K.T | 3.9 | 730 | 325 |

B:200K.T | 4.6 | 930 | 417 |

B:300K.T | 5.5 | 1290 | 550 |

B:125K.K | 3.7 | 860 | 309 |

B:150K.K | 4.0 | 1020 | 340 |

B:200K.K | 4.5 | 1300 | 400 |

B:300K.K | 5.5 | 1820 | 505 |

B:125W.T | 3.5 | 730 | 304 |

B:150W.T | 3.9 | 820 | 355 |

B:180W.T | 4.5 | 880 | 390 |

C:125L.T | 3.4 | 440 | 289 |

C:150T.T | 3.8 | 480 | 309 |

C:150L.T | 4.0 | 500 | 330 |

C:200T.T | 4.2 | 530 | 378 |

C:200L.T | 4.4 | 560 | 390 |

C:125K.T | 3.5 | 650 | 304 |

C:150K.T | 3.9 | 760 | 339 |

C:200K.T | 4.4 | 790 | 400 |

C:300K.T | 5.9 | 1390 | 600 |

C:150K.K | 4.1 | 1020 | 369 |

C:200K.K | 4.8 | 1300 | 439 |

C:300K.K | 5.6 | 1820 | 599 |

C:150W.T | 4.0 | 905 | 364 |

C:180W.T | 4.4 | 1120 | 400 |

E:125T.T | 2.3 | 440 | 270 |

E:125L.T | 2.7 | 480 | 292 |

E:125K.T | 2.8 | 650 | 291 |

E:150K.T | 3.2 | 730 | 330 |

E:200K.T | 3.9 | 930 | 413 |

E:150K.K | 3.2 | 860 | 325 |

E:200K.K | 4.0 | 1160 | 428 |

E:125W.T | 2.8 | 730 | 301 |

E:150W.T | 3.5 | 790 | 363 |

E:180W.T | 3.9 | 1020 | 413 |

E:125W.W | 3.2 | 1020 | 326 |

E:150W.W | 3.6 | 1140 | 363 |

E:180W.W | 4.0 | 1480 | 426 |

BC:125L.T | 4.2 | 440 | 472 |

BC:150T.T | 4.7 | 500 | 492 |

BC:150L.T | 4.9 | 620 | 510 |

BC:200T.T | 5.1 | 645 | 527 |

BC:200L.T | 5.5 | 670 | 584 |

BC:125K.T | 4.6 | 650 | 482 |

BC:150K.T | 5.3 | 680 | 528 |

BC:200K.T | 5.8 | 800 | 560 |

BC:300K.T | 6.5 | 1450 | 774 |

BC:125K.K | 4.8 | 860 | 508 |

BC:150K.K | 5.2 | 1020 | 558 |

BC:200K.K | 5.7 | 1200 | 614 |

BC:300K.K | 6.7 | 1300 | 749 |

BC:150D.T | 5.1 | 570 | 537 |

BC:125W.T | 4.7 | 730 | 503 |

BC:150W.T | 5.3 | 730 | 542 |

BC:180W.T | 5.8 | 880 | 629 |

EB:125L.T | 4.5 | 500 | 468 |

EB:150T.T | 4.8 | 560 | 500 |

EB:150L.T | 5.1 | 660 | 528 |

EB:200L.T | 5.5 | 720 | 563 |

EB:125K.T | 4.5 | 650 | 480 |

EB:150K.T | 5.1 | 730 | 518 |

EB:200K.T | 5.7 | 1135 | 578 |

EB:150D.T | 5.0 | 570 | 523 |

EB:125W.T | 4.5 | 730 | 490 |

EB:150W.T | 5.0 | 820 | 554 |

EB:180W.T | 5.5 | 1135 | 578 |

Figures shown are for industry standard lightweight containerboard fluting (typically 90g/m2 nominal weight).

Board ECT and Burst strengths can improve significantly for board specifications incorporating Enhanced or Heavy weight fluting.