What Is The Principle Behind The Oil And Water Resistance Of Food-grade Kraft Paper?

Jul 08, 2026

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Food-grade kraft paper is not ordinary paper; it is made from long-fiber wood pulp through high-strength pressing and a plant-based coating process. Its oil resistance comes from the physical barrier formed by the dense interweaving of fibers, rather than a chemical coating; its water resistance relies on the synergistic effect of natural lignin and its microporous structure-water does not easily penetrate, yet it maintains moderate breathability, preventing condensation buildup.

 

This material does not release plasticizers, does not emit odors when heated, and meets the GB 4806.8-2022 standard for food contact paper, making it an ideal carrier for light meals, salads, and sauces. It doesn't rely on a layer of plastic to "disguise" itself as environmentally friendly; rather, it refuses to compromise from the very source of the fiber.

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