How do metal tin box solve the problem of extrusion damage in biscuit packaging?

For biscuit manufacturers, crush damage is one of the most common problems in the entire transportation process from the factory to the consumer. The fragile biscuits will crack, break, or deform due to pressure during stacking, transportation, and handling. Unlike cardboard or plastic containers, high-quality metal tin box have excellent structural support and rigidity, effectively dispersing external loads and reducing local stress. As a metal can manufacturer, Tsing will provide information on how metal tin box solutions can eliminate crush damage and keep biscuits fresh from the manufacturer’s perspective.

Material Strength and Structural Integrity of a metal tin box

Tsing chooses tinplate as the material to protect biscuits from damage caused by crushing forces, which has excellent stiffness and deformation resistance. With a yield strength of more than 200 MPa, its structural stiffness is unmatched by other materials. To further enhance durability, the metal tin box uses pressed ribs and gussets, which act as integral support beams to prevent the panel from bulging under vertical pressure. This rib structure enhances load-bearing capacity and improves resistance to side impact during handling.

At the same time, all tinplate surfaces are treated with a proprietary anti-corrosion passivation treatment to ensure that the metal tin boxes can effectively resist moisture and avoid humid environments that cause structural damage due to long-term use. The combination of these materials and structures can withstand heavy stacking in warehouses and bumps during transportation while maintaining the original state of the biscuits inside.

Increase internal cushioning to reduce impact.

Even the sturdiest metal tin boxes cannot prevent damage from sudden impact or falls without internal protection. Tsing’s tin can engineers solved this problem by designing an interlocking box lid and box bottom structure with a tolerance of only ±0.2 mm to ensure the box remains square under dynamic conditions. We incorporate high-performance cushioning pads, custom-molded to the exact dimensions of each biscuit, within these precision-fitted metal tin box shells. These pads gently support the biscuits, maintain consistent inter-layer spacing, and absorb kinetic energy during impact.

For fragile sandwich or cream sandwich biscuits, we provide a layered tray design with independent compartments to prevent lateral movement that may cause the biscuits to crack. Ensure the cookies remain intact after repeated drop tests or simulated handling over rough terrain.

Sealing and moisture resistance

To ensure that the metal tin box maintain the flavor of the cookies, we also ensure humidity control throughout the can when designing. Precision-engineered double-lip seals and food-grade elastomeric gaskets are used in metal tin box solutions to achieve a barrier equivalent to IPX4 against moisture and airborne contaminants. This airtight seal prevents moisture intrusion, preventing the cookies from softening and making them more susceptible to crush damage. In addition, the non-porous tinplate substrate resists water vapor diffusion, further maintaining internal closure. For high-humidity markets such as Southeast Asian or South American climates, our metal tin designs include desiccant compartments or optional vacuum sealing processes to maintain an optimal low-humidity environment. This allows manufacturers to extend shelf life and reduce transportation damage claims significantly.

Enable customizable metal tin box shapes and stackable designs.

Versatile metal tin box geometry also plays a vital role in retail display. Tsing’s broad portfolio includes rectangular, square, cylindrical, and custom polygonal tins designed to maximize stacking strength and minimize wasted pallet space. Reinforcement features such as beads and gussets allow high stacking configurations up to 10 layers. Different custom tin shapes cater to specific biscuit formats, from slim rectangular tins for long fingers or wafer sticks, square tins for assorted biscuits, to round tins for cookies or seasonal shapes. These options allow brands to maintain a consistent packaging footprint across product lines, resulting in a coordinated supply chain.

Aesthetics meets practical protection.

Packaging must also be functional and visually superior in the premium biscuit market. Tsing’s metal tin manufacturing process incorporates advanced decoration technologies, including digital offset printing for full-pack high-resolution graphics, precision embossing for tactile logos, and hot stamping for metal foil without compromising barrier properties. Gloss, matte, or special soft-touch finishes can be added to our in-house coating lines to prevent sagging or uneven curing. These decorative layers adhere seamlessly to the tinplate, maintaining the metal tin box’s structural strength and moisture resistance. European and North American brands will use this combination of form and function to create a metal tin box worth giving away, which can become a souvenir for future use.

Ensure damage-free, high-quality biscuit packaging.

Tsing metal tin box solutions cover high-strength tinplate materials, precision sealing, internal buffering, stackable design, and customizable design to ensure that the biscuits are intact and our customers can deliver them perfectly to consumers. With metal tin packaging, biscuit brands can significantly reduce breakage rates, provide solid protection and exquisite appearance, and enhance market positioning.