First, the important distinction standard: whiteness
Food-grade white kraft paper often adds a small amount of bleach, while ordinary white kraft paper adds bleach exceeding food-grade standards in order to pursue the beauty of color, making the color look super white and give people a good feeling. Therefore, the whiteness of food-grade white kraft paper is often low and even looks yellow. Therefore, whiteness is a very important reference standard when customers choose food-grade white kraft paper. If the whiteness is high, it goes without saying that it must be ordinary white kraft paper.
Second, the ash control
The production of food-grade white kraft paper is strictly controlled, and all indexes are configured according to food-grade requirements, so the ash content of food-grade white kraft paper is controlled at a very low level, while ordinary white kraft paper has a high ash content in order to reduce costs.
Third, the test report
According to China's requirements for food-grade packaging materials, food-grade white kraft paper must pass the QS test, but ordinary grade does not.
Fourth, the price
Although the price difference is not absolute, it is also an important reference value. The price of food-grade white kraft paper is usually above 8,500 yuan/ton, and ordinary kraft paper is usually around 7,000 yuan/ton. If the price of white kraft paper is very low, it goes without saying that it must be ordinary. After all, the production cost is there.