Discussion on the properties of petg plastics from the perspective of food safety

PETG plastic is called transparent plastic for short, and its properties are very different from those of PET and PCT. Because of its uniqueness, it is an amorphous polyester With the increase of CHDM in the polymer, the melting point decreases, the glass transition temperature increases and the crystallinity decreases, and finally an amorphous polymer is formed. Generally speaking, the CHDM content of PETG is 30%-40%. It has good viscosity, transparency, color, chemical resistance and stress whitening resistance. Can be rapidly thermoformed or extruded and blow molded. The viscosity is better than acrylic acid. Its product has high transparency and excellent impact resistance, and is especially suitable for molding thick-walled transparent products. It has excellent processability and can be designed into any shape according to the designer's intention. Traditional molding methods such as extrusion, injection molding, blow molding and plastic absorption can be adopted, which can be widely used in markets such as plates, high-performance shrink films, bottles and special-shaped materials. At the same time, it has excellent secondary processing performance and can be modified by conventional processing. PETG is an amorphous polyester with high transparency and excellent impact resistance, which is especially suitable for molding thick-walled transparent products. It has excellent processability and can be designed into any shape according to the designer's intention. Traditional molding methods such as extrusion, injection molding, blow molding and plastic absorption can be adopted, which can be widely used in the markets such as plates, high-performance shrink films, bottles and profiles, cosmetics packaging, etc. And its secondary processability is excellent.