In the big family of plastic sheets, PET sheets occupy an important place with their unique properties. Compared with other common plastic sheets, PET sheets have many differences.

First, compare PET sheets with PVC sheets. PET sheets have higher transparency, and their light transmittance is close to that of glass, which can clearly show the items in the package, which makes it have obvious advantages in product packaging with high transparency requirements. The transparency of PVC sheets is relatively low. From a safety perspective, PET sheets are non-toxic and odorless, meet the strict hygiene standards of industries such as food and medicine, and can be directly used for packaging in these fields; PVC sheets may contain substances such as plasticizers that are harmful to the human body, and their application in food and medicine packaging is limited. In addition, the mechanical properties of PET sheets are also relatively excellent. It has high strength and toughness, good folding resistance, and is not easy to break or damage; although PVC sheets have a certain degree of flexibility, their strength and toughness are relatively weak.

Let’s look at PET sheets and PP sheets. PET sheets are superior to PP sheets in terms of transparency and glossiness, which makes them more popular in some packaging that focuses on appearance. In terms of barrier properties, PET sheets have better barrier effects on gases, water vapor, grease, etc., and can better protect the items in the package. For example, in terms of food preservation, PET sheets can more effectively prevent food from moisture, oxidation, and deterioration. However, PP sheets have better temperature resistance and stronger stability in high-temperature environments, which makes it have application advantages in some product packaging that requires high-temperature processing or storage. Moreover, the price of PP sheets is relatively low, and it has certain advantages in cost.

Compared with PS sheets, PET sheets have significantly better toughness. PS sheets are brittle and easily break when impacted by external forces, while PET sheets can withstand greater external forces without damage. At the same time, PET sheets are also more chemically resistant and can resist the erosion of a variety of chemicals, which is very important in some special application scenarios. Although PS sheets have high hardness and stiffness, in practical applications, their brittleness limits their scope of use.

In summary, PET sheets show unique performance characteristics in comparison with other plastic sheets. In different application scenarios, various plastic sheets have their advantages and limitations. PET sheets play an important role in the packaging of food, medicine, cosmetics, and some industrial applications due to their good transparency, mechanical properties, barrier properties, etc. However, when choosing plastic sheets, it is necessary to comprehensively consider factors such as product demand, cost, environmental protection, etc. to select the most suitable material. With the continuous advancement of science and technology and changes in market demand, PET sheets and other plastic sheets will continue to develop and improve, providing better packaging and material solutions for various fields.