El material PETG es una especie de plástico transparente en breve, es un copolitio amorfo. El comonómero comúnmente utilizado de PETG es 1,4-ciclohexano dimetanol (CHDM), el nombre completo es el tereftalato de polietileno. Ester de alcohol-1,4-ciclohexanedimetanol éster. Es un producto de policondensación del ácido tereftálico (TPA), etilenglicol (EG) y 1,4 -ciclohexanedimetanol (CHDM) por el método de transesterificación, que es 1,4 más que el comandante de dimetanol PET -cicloheexano tiene más coma de etileno glicol que PCT. Por lo tanto, el rendimiento de PETG es bastante diferente de PET y PCT. Con su singularidad, solo hay dos compañías en el mundo, Eastman de los Estados Unidos y SK de Corea del Sur, con tecnologías relativamente maduras.

An amorphous copolyester. With the increase of CHDM in the copolymer, the melting point decreases, the glass transition temperature increases, and the crystallinity decreases, and finally an amorphous polymer is formed. Generally, the content of CHDM in PETG is 30%-40%. It has good viscosity, transparency, color, chemical resistance, and resistance to stress whitening. It can be thermoformed or extrusion blow molded very quickly. The viscosity is better than acrylic (acrylic). Its products are highly transparent and excellent in impact resistance. It is especially suitable for forming thick-walled transparent products. Its processing and forming performance is excellent. It can be designed in any shape according to the designer’s intention. It can use traditional extrusion, injection molding, blow molding and suction. Molding methods such as plastics can be widely used in the market of sheet materials, high-performance shrink films, bottles and profiled materials. At the same time, it has excellent secondary processing performance and can be modified by conventional machining. PETG is an amorphous copolyester. Its products are highly transparent and have excellent impact resistance. It is especially suitable for forming thick-walled transparent products. It has excellent processing and molding properties and can be designed in any shape according to the designer’s intention. The traditional extrusion, injection molding, blow molding and blister molding methods can be widely used in the market of sheet materials, high-performance shrink films, bottles and profiles, and cosmetic packaging. At the same time, it has excellent secondary processing performance and can be used for Conventional machining modification. Eastman PETG and Korean SKPETG are currently the main domestic agents of Shanghai Lianmo Chemical.