As food safety and green environmental protection gain growing attention worldwide, coated food-grade paper has gradually become a mainstream material in the food packaging industry. It is widely used in catering, baking, snacks, fresh food and many other fields, offering a comprehensive solution for food preservation, transportation and brand presentation with its excellent safety, practical functions and eco-friendly features.
1. What is Coated Food-Grade Paper?
Coated food-grade paper is made from food-grade virgin wood pulp as the base paper. Through a precise coating process, one or more layers of special coatings-such as water-based polymers, fluorine-free oil repellents and food-grade resins-are evenly applied to one or both sides of the paper. After drying and calendering, it becomes a functional paper product.
Compared with ordinary paper, it gains core properties like oil resistance, water resistance, high-temperature resistance and printability through the coating. Unlike traditional PE-laminated paper, it is more eco-friendly, recyclable and safer, making it an ideal alternative under the "paper instead of plastic" policy.
2. Core Features and Advantages
1) Ultimate Safety for Direct Food Contact
Pure Raw Materials: Made of 100% food-grade virgin wood pulp, free of harmful substances such as fluorescent brighteners, mineral oil and plasticizers.
Compliant Coatings: The coating components strictly meet global authoritative standards, including China's GB 4806.8-2022 National Food Safety Standard, US FDA and EU BfR.
Fluorine-Free and Plastic-Free: The new generation of water-based coated products contains no harmful fluorocarbon substances like PFAS and PFOA, no plasticizer residues, and can directly contact various dry and wet foods.
Hygiene Qualified: Passes strict tests for heavy metals (lead ≤ 1mg/kg), microorganisms and migration, ensuring food safety.
2) Powerful Functions for Diverse Scenarios
Oil and Water Resistance: The coating forms a dense barrier film, with an oil resistance level of up to KIT 12. It can prevent oil penetration from hamburgers, fried chicken, baked goods and other foods, while resisting moisture and condensed water erosion-keeping the packaging from softening or leaking.
High and Low Temperature Resistance: It can withstand a temperature range from -20℃ (freezing) to 160℃ (high temperature), suitable for microwave and oven heating. It remains intact even when soaked in 100℃ hot water or 120℃ hot oil.
High Stiffness and Fold Resistance: The coating enhances the paper structure, significantly improving its stiffness and fold resistance. The packaging has good formability, strong load-bearing capacity and is not easy to break.
Exquisite Printing: With a smooth and delicate surface, it allows even ink adhesion, presenting bright colors and clear details to perfectly display brand logos and product information.
3) Eco-Friendly, Aligning with Sustainable Trends
Recyclable and Repulpable: With a non-plastic composite structure, it can be directly pulped and recycled, with a much higher repulping rate than PE-laminated paper.
Degradable and Compostable: It can degrade naturally after use, produce no harmful gases when incinerated, and not pollute the soil when landfilled.
Carbon Reduction and Energy Saving: The production process is more environmentally friendly, reducing plastic usage and helping enterprises achieve their "dual carbon" goals.
3. Main Coating Types and Applications
1) Water-Based Fluorine-Free Oil-Repellent Coated Paper (Mainstream)
Features: Plastic-free, fluorine-free, oil and water resistant, recyclable and microwave-safe.
Applications: Hamburger boxes, french fry bags, fried chicken packaging, baking trays, mooncake boxes, biscuit liners.
2) Food-Grade PE Coated (Laminated) Paper
Features: Low cost, excellent oil and water resistance, and good heat-sealing performance.
Applications: Paper cups, paper bowls, takeout boxes, liquid food packaging.
3) Silicone Coated Paper (Baking Paper)
Features: High-temperature resistant, non-stick and oil-repellent.
Applications: Baking paper, baking sheets, cake trays, oven mats.
4) Food-Grade Wax Coated Paper
Features: Moisture-proof, oil-repellent and soft.
Applications: Candy packaging, cheese packaging, cooked food wrapping paper.
4. Technical Standards and Specifications
Implementation Standards: GB/T 44834-2024 Water-Based Coated Paper and Paperboard for Food Packaging, GB 4806.8-2022.
Grammage Range: 28-60g/㎡ for thin paper, 160-400g/㎡ for cardboard.
Common Specifications: Roll and sheet, with customizable size, coating thickness and oil resistance level.
5. Industry Application Prospects
With the full advancement of the "plastic restriction order" and the improvement of consumers' health awareness, the market demand for coated food-grade paper continues to grow. It not only solves the pain points of traditional paper-such as easy oil and water seepage-and non-recyclable plastic packaging, but also becomes the preferred packaging material for fast-food chains, baking brands, snack enterprises and fresh food e-commerce with its comprehensive advantages of safety, environmental protection and multi-functionality.
In the future, with the iteration of water-based coating, antibacterial coating and degradable coating technologies, coated food-grade paper will develop towards lighter weight, higher performance and greener development, deeply empowering the upgrading of the food packaging industry.
Conclusion
Coated food-grade paper is an innovative product integrating technology and environmental protection. Based on paper and taking coating as the core, it ensures food safety while balancing practical functions and ecological value. From daily catering to high-end baking, from casual snacks to fresh food preservation, coated food-grade paper is quietly changing the food packaging industry, leading a safer, greener and more sustainable development direction.