Oyster White Board

Oyster White Board, also known as Mottled White Board, features a clay-coated CCNB linerboard with an off-white surface and natural kraft undertones, suitable for moderate quality printing. This material is commonly chosen for being the most economical white corrugated option. For achieving higher quality color vibrancy, Bleached White or Kemi are the best choices.

Off-white surface with natural kraft undertones
Most economical option for white corrugated
Highest recycled content option

Best Used With

Folding Carton Boxes Corrugated Boxes Rigid Boxes Rigid Tube Floor Displays Wine Bags Food Packaging

Overview

Oyster board is the industry standard liner board for producing white corrugated packaging. Made from kraft paper, this material features high recycled content, making it up to 100% recyclable. The liner has a slightly off-white color, maintaining kraft brown undertones due to the lack of full bleaching. It is often the best choice for white corrugated packaging because it is cost-effective, readily available, and offers more accurate color output when printed on. However, the natural undertones result in a 'no gloss' finish, giving printed designs a flatter appearance.

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.

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.