Hot keywords: Food paper、Dowling paper、Blister paper、FSC paper、book jam、Pearlescent paper, etc.

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Food paperQuantitative is the most fundamental physical indicator of paper, and its height and uniformity affect all the physical, mechanical, optical, and printing properties of paper. The various performance indicators of general printing paper, such as thickness, tensile strength, burst resistance, opacity, etc., are closely related to quantification. If the weight of the paper is significantly lower than its standard specifications, not only is it prone to printing faults due to through printing, but it may also break due to insufficient mechanical strength. On the contrary, if the quantity is too high, it will waste pulp in production and cannot guarantee the practical area of each ton of roll of paper for users. When the quantity of one piece of paper is different from that of the next, the adjustment of food paper cannot be carried out within this paper interval, resulting in inaccurate printing and uneven depth of imprints. When the quantity of the same paper is uneven, it is more likely to cause unclear handwriting and inconsistent color in the image.

Food paper quantification can be divided into absolute drying quantification and air drying quantification. The former refers to the quantity in a completely dry state with zero moisture, while the latter refers to the quantity in a state where moisture equilibrium is reached at a certain humidity. The commonly referred to quantification refers to the latter. The quantitative determination of packaging in Shenzhen should be carried out under standard temperature and humidity conditions (temperature 23 ± 1 ℃; relative humidity 50 ± 2%).

In terms of technology, quantification is the basic condition for conducting various performance evaluations, such as strength, opacity, and dustiness. In terms of practicality, quantification is the fundamental factor in determining the usable area per unit weight. Although there may be some error in the quantification of food paper, the limit of error must be strictly controlled.