Grammage and Price Calculation of the PET Sheets


PET sheets/films are widely used in the custom paper boxes to constitute the clear window, also referred to the clear window paper box. In this article, we will talk about how to calculate the grammage and price of the PET sheets.

The density of PET is constant,  1.38 g/cm3 (20 °C). For a piece of PET sheet measured 100cm length * 100cm width * 0.1mm thick,

PET密度:1.38 g/cm3 (20 °C)。

volume =100*100*0.1/10=100cm3 ;

10丝PET克重(0.1mm厚度): 100*1.38=138gsm;



Therefore, theoretically the 0.2mm thick PET sheet has the grammage 276gsm;

The cost of the PET is usually priced at RMB14,800/t.






In theory, the per square cost of 0.2mm thick PET sheet wold be 0.6USD.

But in practice, a lot of other fees would be involved to produce the PET sheet. In reality, the per square cost of 0.2mm PET sheet is around 1.2USD.

As a leading China paper box manufacturer and supplier, Shanghai DE Printed Box is a China medium-sized custom paper box manufacturer and packaging solution provider with facilities around 100,000 square meters in total. The company exclusively specializes in the supply and export of the custom paper boxes, including the paper printed boxcorrugated printed boxcosmetic paper boxrigid paper box, cardboard gift box and custom paper bag. If you have any questions about the custom paper box, or would like us to give you a price quote, please do not hesitate to contact us by giving us an email.

Leave a Comment