What is haze in pet film?

Haze in PET (polyethylene terephthalate) film refers to the cloudiness or lack of transparency that can occur in the material. It is often caused by the presence of impurities, variations in thickness, or crystallinity within the film. Haze can negatively impact the aesthetic and optical properties of the film, making it less suitable for applications requiring clarity, such as packaging for food or electronics. Manufacturers typically aim to minimize haze through careful control of production processes and material quality.