Analysis of the Impact of Packaging Materials and Printing Processes on Costs

Materials and Processes Are the Main Sources of Cost

In packaging box pricing, material costs typically account for 40%-60%, printing costs for 20%-30%, and post-press processes for 10%-30%. The remainder covers dies, box gluing, transportation, and other items. The key to optimizing packaging cost is to thoroughly analyze these two variables: materials and processes.

Material costs depend on specifications, while process costs depend on the bill of items. Each is broken down separately below.

Material One: White Cardboard

White cardboard is the mainstream material for folding boxes, face paper, and paper cards. Commonly used grammage is 200-400 gsm. 250 gsm white card has lower cost and is suitable for inner boxes and accessory boxes; 300-350 gsm white card has good stiffness and is suitable for outer boxes and mailer box bodies; 400 gsm white card is used for the surface layer of high-end gift boxes. For every 50 gsm increase in grammage, the cost per sheet rises by approximately 15%-25%.

The surface of white cardboard is suitable for various processes including offset printing, digital printing, lamination, hot stamping, UV, and embossing. Food contact applications must comply with GB 4806.8-2022 standard, and food-grade white card should be selected.

Material Two: Grey Board

Grey board is the main structural material for rigid boxes (lid-and-base, book-style, and drawer boxes). Commonly used thicknesses range from 1.0–3.0 mm, corresponding to a grammage of 600–2000 gsm. 1.5 mm grey board offers moderate cost and is suitable for mid-grade gift boxes; 2.0–3.0 mm grey board is used for high-end gift boxes, providing excellent stiffness but at a significantly higher cost.

Grey board generally does not come into direct contact with food and must comply with the food-grade requirements of the GB 4806.8-2022 standard. When used for food packaging, it is typically laminated or fitted with a food-grade inner liner, which adds another process cost. The surface of grey board must be laminated with a facing paper (coated paper or specialty paper) before printing.

Material Three: Coated Paper

Coated paper is the mainstream material for face stock and hang tags. The commonly used basis weight is 105-250 gsm. The surface is glossy or matte, with good color reproduction, making it suitable for fine-pattern printing. Coated paper is lower in cost than white cardstock and gray chipboard, and is often used for the outer layer of low-price gift boxes.

Process 1: Lamination

Lamination is divided into glossy film and matte film. Glossy film enhances glossiness, while matte film enhances texture. The primary functions of lamination are to protect the printed surface, prevent scratches, and provide moisture resistance. Lamination cost is calculated by area, and the lamination cost for a single packaging box typically ranges from 0.1-0.5 RMB, depending on size. Varnishing is a cheaper alternative, but its durability is not as good as lamination.

Process Two: Hot Foil Stamping

Hot foil stamping (anodic aluminum foil stamping) transfers metallic foil onto the surface of printed materials through heat. Colors are diverse (gold, silver, rose gold, laser, etc.). Hot foil stamping is charged by area or by piece, with the cost per unit typically ranging from 0.2-1.0 RMB, and complex patterns can exceed 2 RMB. Hot foil stamping can be combined with embossing to create a three-dimensional effect, but the costs are cumulative.

Process Three: UV

UV (Spot UV) involves applying UV varnish to specific areas of a printed piece, creating a glossy effect after curing. Spot UV demands higher process precision than full-surface UV, with registration deviation typically required to be ≤0.2 mm. UV cost is calculated by area, with unit cost generally ranging from 0.1 to 0.8 RMB. When UV is combined with embossing or hot stamping, the sequence of processes is critical.

Process Four: Embossing and Debossing

Embossing (and debossing) uses dies to make specific areas of a printed piece rise or recess, creating a three-dimensional effect. The depth is typically 0.3–1.0 mm. Embossing is charged by area or by piece, with the unit cost usually between 0.2–1.5 yuan. Debossing produces a flat textured effect, with a slightly lower cost than embossing.

Process Combination Recommendations for Different Budgets

Low budget (unit cost 1-3 RMB): White cardstock 250-300 gsm + digital printing + glossy lamination, with an airplane box as the structural style.

Medium budget (unit cost 3-8 RMB): Greyboard 1.5 mm + coated paper face stock + offset printing + matte lamination + spot UV, with a top-and-bottom lid box or drawer box as the structural style.

High budget (unit cost 8-20 RMB): Greyboard 2.0-3.0 mm + specialty paper face stock + offset printing + matte lamination + hot foil stamping + embossing + inner liner, with a top-and-bottom lid gift box or book-style box as the structural style.

The choice of materials and processes is essentially a balance between budget and effect—there is no standard answer.