Food cardboard is a special kind of paper, and its production process has strict requirements. For example, in terms of processing methods, it is first dried, and the base paper is sent to the hot air furnace and dryer for drying; then the environmentally friendly waterproof coating is applied on both sides of the semi-finished product, and then it is compounded by the laminating machine and the pressing roller; then it is sent to the winding mechanism for winding and quality inspection, sterilization and disinfection; then it is cut into the same size and stacked on the conveyor belt, and finally cut and packaged to obtain the cardboard of the required size and shape.
From the perspective of performance characteristics, food cardboard has many advantages. It is usually made of pure wood pulp and does not contain harmful substances and heavy metals that are harmful to human health. It has high strength, good stiffness and burst resistance, and can protect food from external forces during packaging and transportation. It has a certain degree of waterproofness, which can prevent food moisture from penetrating into the paper, maintain the dry strength of the paper, and avoid packaging cracking and deformation. It has good printing performance, a smooth surface, good ink absorption, and can present clear and bright printing effects, which is convenient for printing food-related information, pattern logos, etc. It also meets the safety standards of food-grade packaging materials and has undergone various tests and certifications to ensure that contact with food does not cause pollution.
In addition, food cardboard is also widely used in baked foods. Food cardboard can be found in baking paper, placemats, etc. Placemats can carry food residues, absorb oil and water, keep the desktop clean, and can also play a role in publicity; baking paper is resistant to high temperatures and is anti-stick and oil-proof, making it easy to demould baked foods and avoid cleaning the baking tray, which improves the efficiency of food merchants. In short, food cardboard plays an important role in ensuring food safety and improving the quality of food packaging.