Kemi White Board
Kemi White Board features a semi-gloss-coated brilliant white C1S linerboard on one side, perfect for high-quality printing and finishing. This material has a pre-applied semi-gloss coating, eliminating the need for additional coatings to achieve a semi-gloss finish. However, Kemi is more expensive than its mottled white counterpart.
- Brilliant semi-gloss coated white surface
- Printed colors appear more vibrant
- More expensive than mottled white
Best Used With
Overview
Natural kraft board, made from 80% virgin pulp fiber, is up to 100% recyclable and biodegradable. Brown in color, it offers optimal durability, tear resistance, and dust resistance, making it ideal for shipping product packaging. As the industry standard for corrugated packaging, natural kraft board is readily available and cost-effective to produce. However, its brown color may cause printed designs to appear more muted or faded. For brands requiring vibrant designs, investing in bleached white or Kemi white liner boards, despite the higher cost, might be worthwhile.
Corrugated Board Process
Flute Types & Formation
Corrugated Formation
Flute Types
Corrugated Board Performance
Single Wall
| Min. Burst Strength (lbs/sq in) | Min. Edge Crush Test (lbs/in) | Min. Combined Weight of Facings (lbs/m sq ft) | Max Weight of Box and Contents (lbs) | Max Outside Dimensions (L + W + D in) |
|---|---|---|---|---|
| 125 lbs/sq in | 23 lbs/in | 52 lbs/m sq ft | 20 lbs | 40 in |
| 150 lbs/sq in | 26 lbs/in | 66 lbs/m sq ft | 35 lbs | 50 in |
| 175 lbs/sq in | 29 lbs/in | 75 lbs/m sq ft | 50 lbs | 60 in |
| 200 lbs/sq in | 32 lbs/in | 84 lbs/m sq ft | 65 lbs | 75 in |
| 250 lbs/sq in | 40 lbs/in | 111 lbs/m sq ft | 80 lbs | 85 in |
| 275 lbs/sq in | 44 lbs/in | 138 lbs/m sq ft | 95 lbs | 95 in |
| 350 lbs/sq in | 55 lbs/in | 180 lbs/m sq ft | 120 lbs | 105 in |
Double Wall
| Min. Burst Strength (lbs/sq in) | Min. Edge Crush Test (lbs/in) | Min. Combined Weight of Facings (lbs/m sq ft) | Max Weight of Box and Contents (lbs) | Max Outside Dimensions (L + W + D in) |
|---|---|---|---|---|
| 200 lbs/sq in | 42 lbs/in | 92 lbs/m sq ft | 80 lbs | 85 in |
| 275 lbs/sq in | 48 lbs/in | 110 lbs/m sq ft | 100 lbs | 95 in |
| 350 lbs/sq in | 51 lbs/in | 126 lbs/m sq ft | 120 lbs | 105 in |
| 400 lbs/sq in | 61 lbs/in | 180 lbs/m sq ft | 140 lbs | 110 in |
| 500 lbs/sq in | 71 lbs/in | 222 lbs/m sq ft | 160 lbs | 115 in |
| 600 lbs/sq in | 82 lbs/in | 270 lbs/m sq ft | 180 lbs | 120 in |
Triple Wall
| Min. Burst Strength (lbs/sq in) |
Min. Edge Crust Test (lbs/in) |
Min. Combined Weight of Facings (lbs/m sq ft) |
Max Weight of Box and Contents (lbs) |
Max Outside Dimensions (L + W + D in) |
|---|---|---|---|---|
| 700 lbs/sq in | 67 lbs/in | 168 lbs/m sq ft | 240 lbs | 111 in |
| 900 lbs/sq in | 80 lbs/in | 222 lbs/m sq ft | 260 lbs | 115 in |
| 1100 lbs/sq in | 90 lbs/in | 264 lbs/m sq ft | 280 lbs | 120 in |
| 1300 lbs/sq in | 112 lbs/in | 360 lbs/m sq ft | 300 lbs | 125 in |
E-Flute
| Min. Burst Strength (lbs/sq in) |
Min. Edge Crust Test (lbs/in) |
Min. Combined Weight of Facings (lbs/m sq ft) |
Max Weight of Box and Contents (lbs) |
Max Outside Dimensions (L + W + D in) |
|---|---|---|---|---|
| 150 lbs/sq in | 26 lbs/in | 66 lbs/m sq ft | 35 lbs | 50 in |
| 200 lbs/sq in | 32 lbs/in | 84 lbs/m sq ft | 65 lbs | 75 in |
Corrugated Strength Tests
Edge Crush Test (ECT)
Force is applied perpendicular to the edge of the corrugated board until it buckles. This test provides an accurate measure of the material's strength, durability, and stack resistance for heavier loads. The resulting value, shown in pounds per linear inch of load-bearing edge, is reported as ECT (Edge Crush Test) ratings.
Note: 32 ECT is the most commonly used for corrugated material.
Note: 32 ECT is the most commonly used for corrugated material.
Bursting Test
The burst test, also known as the Mullen Test, evaluates the durability of the corrugated fiberboard’s surface. It measures the amount of force required to puncture the liner board, with the resulting value given in pounds per square inch.
Note: 200# means 200 pounds per square inch of force applied to the face of the liner board.
Note: 200# means 200 pounds per square inch of force applied to the face of the liner board.
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