Cardboard Grades

Cardboard Grades and Fluting Types

Corrugated board is available in many different widths with varying paper weights and finishes. We source ours from global leaders within the paper based packaging industry to ensure our material is cost effective and of the highest quality.

 

Standard finishes are KRAFT (brown). White papers can be coated to provide a superior substrate for greater print quality. The standard flute profiles that we work with are E, B, BC and EB. A more comprehensive guide to these materials is shown below:

Cardboard grade E | Package-In

E Flute

1.1mm – 1.2mm thickness. Gives excellent crush resistance and compression strength. It provides a high quality surface to print upon and is most commonly used in smaller cartons and die-cut applications.

Cardboard grade S | Package-In

S Flute

2.3mm in thickness. The S flute is balanced perfectly for both retail and transit packaging. It sits between E and B Flutes to provide the performance characteristics of B Flute, whilst producing the outstanding printability and strong crush resistance of E Flute.

Cardboard grade B | Package-In

B Flute

3mm in thickness. Probably the most common type of fluting seen in all types of applications including die-cut and regular cases. It gives a good all-round performance in die-cut applications.

Cardboard grade C | Package-In

C Flute

3.5mm – 3.7mm in thickness. Offers greater compression strength than B flute thus giving slightly better stacking strength for lighter products. It can be prone to more crushing if used in the wrong application.

Cardboard grade BC | Package-In

BC Flute

7mm in thickness. Double wall material coupling two types of flute profile. The B and C flute together provide a good level of all round performance. This type of flute is most commonly used in shipping cases for higher levels of contents protection.

Cardboard grade EB | Package-In

EB Flute

3.8mm – 4.1mm in thickness. Double wall material combining the fine E flute and the commonly used B flute. The results give an excellent performance level in both print finish and impact protection.

Suggested Board Grades for Content Weight

The quality and strength of the board lining papers are generally determined by the weight per square metre in Grams e.g. 125, and also content mix of new and recycled wood fibre Kraft paper (‘K’) being of better quality (higher content of new wood fibre) than Test paper (‘T’). For example: 125 K/T B would mean the weight of the paper used is 125 grams per square metre, the external paper being Kraft and the internal being Test quality with ‘B’ fluting between.

B or E Flute

Grade Contents Weight
125 K/T 5kg
150 K/T 10kg
200 K/T 15kg
200 K/ 300 T 20kg
300 K/T 30kg

BC or EB Flute

Grade Contents Weight
125 K/T 15kg
150 K/T 20kg
200 K/T 30kg
200 K/ 300 T 35kg
300 K/T 40kg
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