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How to determine what paper and how many layers of paper to use when making paper edge board?

San (Qingdao) Machinery Co.,Ltd | Updated: May 15, 2018

How to determine what paper and how many layers of paper to use?


There are four kinds of corrugated paper can be used as inner paper. They are 360gsm, about 0.5mm thick. 420gsm, about 0.6mm thick. 520gsm, about 0.75mm thick. 600gsm, about 0.8mm thick. 600gsm and 520gsm paper are mainly used to make more than 4mm thick protector. 420gsm and 360gsm paper are mainly used to make less than 4mm thick protector.

Normally, 200gsm, 220gsm and 230gsm kraft paper is suitble for surface paper. The thickness of two layers of 200gsm paper is about 0.58mm. The thickness of two layers of 220gsm paper is about 0.60mm and the thickness of two layers of 230gsm paper is about 0.62mm.

For example, 3mm thick protector consist of 4 layers of 420gsm corrugated medium and 2 layers(one layer on top, the other one on the bottom) of 200gsm kraft paper. 6 layers in total.

4mm thick protector consist of 3 layers of 520gsm and 2 layers of 420gsm corrugated medium and 2 layers(one layer on top, the other one on the bottom) of 200gsm kraft paper.

 

5mm thick paper board consist of 5 layers of 520gsm, one layer of 420gsm corrugated medium and 2 layers(one layer on top, one on the bottom) of 230gsm kraft paper.

5mm thick protector consist of 2 layers of 600gsm, 4 layers of 520gsm corrugated medium and 2 layers(one layer on top, one on the bottom) of 200gsm kraft paper (kraft paper is used for surface paper).

Notice: two layers of kraft paper are one layer on top and one on the bottom. The above is for reference only. Producers should make judgment based on actual paper using. Thicker paper is better.