White paper is widely used in many fields, and understanding its implementation standards and related characteristics is of great significance to related industries.
There are many implementation standards for white paper. National standards such as GB/T 13024-2016 "Boxboard" and GB/T 22806-2008 "White Cardboard" stipulate the physical properties, printing properties, quality indicators and other requirements of white paper, and divide white paper into three levels: superior products, first-class products and qualified products, providing a basis for grade distinction. In addition, there are industry standards, such as QB/T 1011-2018 "Single-sided White Paper", which further refines performance indicators based on national standards. The corporate standards formulated by some large enterprises are higher than national and industry standards, which can ensure higher quality and stability of products.
In terms of characteristics, the physical properties of white paper are closely related to the level. Quantitatively, white paper with high quantitative weight is usually thicker and stiffer, such as high-end gift box packaging often uses 300g/m² or more. Thickness uniformity is an important quality indicator. High-grade paper has uniform thickness and small error. White paper with high stiffness is not easy to deform during packaging and printing. High whiteness can produce brighter colors and clearer printing effects. High-grade whiteness is generally above 80%.
In terms of printing performance, the surface smoothness of high-grade white paper is usually above 500 seconds, which can better adhere to ink and reduce defects.
White paper has a wide range of uses. As an important material for sales packaging, it has a certain protective effect on the goods. High-grade color printing effect is similar to coated paper. It is often used in packaging of food, medicines, cosmetics, etc., for beautification and publicity. It can also be used as a hang tag, lining board, etc. It can also be compounded with aluminum foil and plastic to make composite containers. Different levels of standards clarify the quality of white paper, which is helpful for enterprise production, purchaser procurement and consumer selection.