It is now a method for workers in print , publishing, paper, professional statistics and accounting to quickly calculate the paper weight and the number of tons of paper. It is often necessary to calculate the weight per paper and the order per ton.
When the paper is shipped from the factory, it is usually in tons, and the printing plant uses the order when it is used. This involves calculating the number of orders per ton of paper. A batch of books was printed and shipped from the printing house to the bookstore. The number of books and papers already known, but how many tons of vehicles are to be transported, which involves calculating the weight of each paper. In practical work, such problems are often encountered, and the above are just two examples.
Calculating the weight of paper and the number of orders per ton is troublesome and prone to errors, so some comrades calculate the results item by item, and then list them in the relevant professional newspapers for professional use.
Their calculation method is generally like this (taking the 787×1092 specification as an example):
1. Find the area of ​​each sheet (square meter): 0.787×1.092m2
2, the weight of each sheet of paper (kg): 0.787 × 1.092 × gram weight ÷ 1000
3, the weight of each paper (kg): 0.787 × 1.092 × weight ÷ 1000 × 500
4, the number of orders per ton of paper: 1000 ÷ per paper weight
In order to change this cumbersome calculation, I made some changes to the fourth formula above:
Order per ton of paper = 1000 / weight per paper
The weight of each paper = (0.787 × 1.092 × gram weight) ÷ (1000 × 500)
The above formula can be written as:
The order per ton of paper = 1000 / (0.787 × 1.092 × gram weight ÷ 1000 × 500)
=(1000×1000)/(0.787×1.092×500×gram weight)
=(1000×1000)/(0.787×1.092×500)
= (2327.194195) × (1/gram weight)
=2327 / gram weight
Weight per ton of paper (kg) = 1000 / per ton of paper
The number of orders per ton of paper = 2327 gram weight
The above formula can be written as:
The weight of each paper (kg) = 1000 / (2327 gram weight)
= (1000 × gram weight) / 2327
= (gram weight / 2327) × 1000
After such a transformation, a very useful constant is obtained: 2327.
2327 gram weight = order per ton of paper
Gram weight 2327×1000=weight per drum (kg)
The result calculated with 2327 is extremely accurate with an error of only 0.8‰.
As for the 850×1168 specification, 880×1230 specification and 889×1194 specification paper, the derivation method is exactly the same, and the constants are 2015, 1848, and 1884, respectively.
Just remember the four constants of 2327, 2015, 1848, and 1884. Regardless of the weight of the four types of paper, it is easy to calculate the number of drums per ton of paper and the number of kilograms per paper. Inscribe these four numbers behind the calculator).
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