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Foreign trade carton specification estimation method: First determine the individual weight of the product, and then determine the amount of each box, determine the carton size, this method is estimated, after all, than the size and weight of the trial installation will definitely be different, so it is only recommended to use in the case of conditions do not allow trial installation。

First, determine the individual weight of the product

The size of A5 is approximately 21cm*14.8cm

gsm means gram per square meter

Single weight =0.21*0.148*70*60+0.21*0.148*250*2+15=160g or so

(Calculate the weight of the inner page and the cover according to the gram weight of the paper and the number of sheets, and then estimate the weight of a coil)

Second, determine the amount of each box

For example, the gross weight of the outer container does not exceed 15kgs。

We can calculate it according to the net weight of 12kgs，12000/160=75 (Probably many times customers like to press the pack，Then 72 copies per box is more reasonable，当然，If you don't want to provide the medium box，You can also directly press 48 copies of an outer box，The specific needs to refer to the characteristics of your own products to decide)

Third, determine the size of the carton

Most of the time，We all know the size of our products，In this case，The length and width of the notebook are known，But we don't know the thickness，Well, that's just an estimate，Like a 60-page coil book，We use a thickness of about 6mm，Consider that the diameter of the coil will be higher than the thickness of the book，So when we pack it, we usually put two of them side by side，Then we can calculate the thickness of a single copy by about 7mm。

If it is 12 copies of an inner box, the inner box size is calculated as follows:

Product size: 21cm x 14.8cm x 0.7cm

Inner box size: +1 x +1 x *12+1= : 22cm x 16cm x 9.5cm

After the products are piled up, the inner box size is generally 1cm long, width and height

Outer box size: (In this case, there will be 6 inner boxes in one outer box, here if it is calculated according to 3 layers and 2 rows)

Box size: 22cm x 16cm x 9.5cm

Outer box size: +2 x *2+2 x *3+3= : 24cm x 34cm x 31.5cm

In other words, the outer box size is 34 x 24cm x 31.5cm

After the inner box is stacked, the general outer box size is 2cm long and width, and 3cm high

Gross weight: 160*72g+2kg inner box Outer box weight = about 13.5kgs

备注：

(1) This method is estimated after all, and there will certainly be a difference in size and weight than that of trial installation, so it is only recommended to use in cases where conditions do not allow trial installation。

(2) Some irregular shape products, when calculating the size of the inner box, pay attention to how to consider the product placement is reasonable, such as may consider 2 products inserted to save space, this time the unit size should be calculated by the size of 2 products put together。

(3) If you clearly know the size and weight of the individual product, then skip to section 1。