What Is GSM in Corrugated Packaging? A Practical Guide
GSM stands for grams per square metre — the weight of paper per unit area. In corrugated box manufacturing, liner and fluting come in different GSM values, and that variation directly affects material cost, stacking strength, and the final product.
Why GSM Matters on the Shop Floor
When you order paper rolls, each batch can have slight GSM differences. If your costing and inventory don't account for this, you risk underquoting or overusing material. Tracking GSM per roll or batch helps you calculate accurate unit costs and maintain consistent quality.
GSM and Box Strength
Higher GSM generally means stronger paper, but the relationship isn't linear. Flute type, moisture, and construction also matter. For quoting and production planning, knowing the GSM of liners and fluting you're using keeps specs consistent and reduces disputes with customers.
Managing GSM in Your Operations
Many small manufacturers track GSM in spreadsheets or on paper. That works until you scale: multiple rolls, multiple orders, and cost updates become error-prone. Software built for corrugated box makers can store GSM by roll or batch and feed it into costing and production, so your books and shop floor stay aligned.
Takeaway
GSM is a core spec in corrugated packaging. Recording and using it in your costing and inventory improves accuracy and consistency. If you're ready to move beyond spreadsheets, a dedicated box ERP can help. TIS BOX ERP includes paper roll and GSM tracking as part of production and inventory — you can try it with a 14-day free trial.
