PET sheet, or polyethylene terephthalate sheet, is a thermoplastic polyester material that is widely used in many fields. First of all, it has excellent transparency, with a light transmittance of more than 90%, close to the transparency of glass, which gives it unique advantages in packaging areas where products need to be displayed and in application scenarios with high requirements for transparency. For example, in cosmetic packaging, transparent packaging bottles or boxes made of PET sheets allow consumers to clearly see the appearance, color and status of the product, enhancing the attractiveness of the product.
Its mechanical properties are also very excellent, with an impact strength that is 3-5 times that of other film materials, and good folding resistance, and it is not easy to break or damage. This allows PET sheets to effectively protect internal items from external impact in transport packaging, and maintain the integrity of the packaging even in complex transportation environments. For example, in the packaging of electronic products, PET sheets can be used as cushioning materials and shell materials to protect electronic products from collisions and extrusions.
In addition, PET sheets have excellent barrier properties and have good barrier effects on gases, water vapor, grease, etc. They can effectively protect the items in the package from the influence of the external environment and extend the shelf life of the product. In the field of food packaging, this feature is particularly important, which can prevent food from getting damp and spoiling, and maintain the freshness and taste of food.
Moreover, PET sheets are non-toxic, odorless, hygienic and safe materials that meet the hygiene standards of the food, pharmaceutical and other industries and can be directly used for food and pharmaceutical packaging. It has good surface gloss, bright color, easy printing and decoration, and can meet the packaging design needs of different products.