What Does Paper Weight (gsm) Mean in Packaging?

Paper weight (gsm) is one of the most common yet least understood terms in packaging. It describes the thickness and strength of the board, not the weight of the box.

What gsm measures

Gsm is the weight in grams of one square metre of board. Higher gsm means thicker, stiffer board that flexes less during transport. Note the common confusion: "500 g baklava box" refers to product capacity, while "400 gsm board" refers to the paper itself.

Which weight for which product

• 300 gsm: light products and small boxes
• 350 gsm: balanced choice for medium boxes
• 400 gsm: the industry standard for dessert, cake and delight boxes

The wider the base, the higher the gsm needed. A 28 x 28 cm cake box needs more strength than an 18 x 18 cm one.

Bristol, kraft and greyboard

Bristol offers a smooth white surface for high print quality. Kraft gives a natural, boutique look. Greyboard is measured in millimetres rather than gsm; our 1.7 mm greyboard cake liners create a firm base under the product.

Lamination

Lamination protects against moisture and scratching, extending the box's life. A pearl-coated interior forms a barrier against oil and syrup, which is why it is standard in dessert boxes.

See paper and coating details on every product page, or pick your own on our custom design products.