Differences Between Food-Grade White Cardboard and Regular White Cardboard

In the packaging and printing industry, white cardboard is widely used. However, many customers struggle to distinguish between food-grade white cardboard and regular white cardboard. Although they may look similar, they differ fundamentally in raw materials, production processes, safety standards, and application scenarios. Choosing the wrong type not only fails to meet regulatory requirements but also poses potential safety hazards.

Made primarily from mixed wood pulp, recycled waste paper pulp, and leftover recycled pulp, with some impure pulp added. To enhance whiteness and smoothness, large amounts of fluorescent whitening agents, fillers, and chemical additives are used. The raw materials are not subject to food-safety-level controls, and impurity content is relatively high.

Made from high-quality virgin wood pulp as the main raw material, with no recycled waste paper, impure pulp, or recycled materials. Food-grade environmentally friendly raw materials are used throughout production to eliminate low-quality impure pulp, preventing heavy metals and harmful impurities from remaining at the source. The paper fibers are pure and odorless.

Allows the addition of high doses of fluorescent whitening agents, making the paper appear whiter and brighter to the naked eye. However, these fluorescent substances can come into direct contact with items. Indicators for heavy metals and chemical residues only meet general packaging standards, failing to comply with safety requirements for food contact. It is strictly prohibited for direct food contact.

Contains zero or low levels of food-compliant fluorescent agents and meets safety testing standards for food contact materials. It has passed food-grade environmental certification, contains no heavy metals or harmful chemicals, has no pungent odor, and can be used in direct contact with foods such as biscuits, cakes, snacks, and frozen foods. It is safe, non-toxic, healthy, and environmentally friendly.

Produced in workshops without food-grade hygiene controls. There are no dust-proof or bacteriostatic requirements during production, cutting, and stacking, making it prone to absorbing dust and bacteria. The production process focuses on paper hardness, whiteness, and cost control, without considering food hygiene.

Produced in dust-free, clean workshops with fully enclosed operations and strict hygiene control standards. Production water, additives, and coatings all meet food-grade specifications. The paper surface is clean, dust-free, odorless, does not shed powder or debris, and will not contaminate food it contacts.

Has average stiffness, with the paper surface prone to powder shedding and fuzzing. It has poor moisture and oil resistance. The grammage is conventional, suitable for simple printing, but it deforms easily when exposed to moisture and cannot resist oil or water.

Offers high stiffness, good toughness, and a smooth, delicate surface without powder shedding or edge cracking. It has good oil resistance, moisture resistance, and impermeability. Suitable for various processes such as film coating, hot stamping, and color printing. It provides excellent forming results, resists damage during packaging, and is ideal for premium food gift boxes and disposable food packaging containers.

Suitable for general packaging and printing that does not involve direct food contact, such as ordinary photo albums, leaflets, clothing tags, daily necessities packaging boxes, cosmetic outer boxes, and gift outer packaging.

Suitable for packaging that comes into direct contact with food, such as cake boxes, bread bags, snack cartons, fast-food takeout boxes, frozen food packaging, tea gift boxes, candy boxes, and baking packaging. It is also the designated paper for supermarkets and brand-name food factories.

At the same grammage, food-grade white cardboard is more expensive than regular white cardboard. This is due to the higher cost of virgin wood pulp raw materials, stringent food-grade process controls, and high testing and certification costs. Regular white cardboard mostly uses recycled pulp and cheap additives, resulting in lower production costs and more affordable pricing, making it suitable only for non-food general packaging.