I. Understanding the PCTG

PCTGIt is a transparent plastic and an amorphous copolyester. The commonly used copolymerization monomer for PCTG is 1,4-cyclohexanedimethanol (CHDM), which is known as polyethylene terephthalate-1,4-cyclohexanedimethanol ester. It is the product of polycondensation by ester exchange of three monomers: terephthalic acid (PTA), ethylene glycol (EG) and 1,4-cyclohexanedimethanol (CHDM). It has more 1,4-cyclohexanedimethanol copolymerization monomers than PET, and more ethylene glycol copolymerization monomers than PCT, so the performance of PCTG is quite different from that of PET and PCT. PCTG is an amorphous copolyester. With the increase of CHDM in the copolymer, the melting point decreases, the glass transition temperature increases, the crystallinity decreases, and finally an amorphous polymer is formed. Generally the content of CHDM in PCTG is 30%-40% which is more suitable.

It has good adhesion, transparency, color, chemical resistance, and resistance to stress whitening. It can be quickly thermoformed or extrusion blow molded. Viscosity is better than acrylic (acrylic).PCTG is a kind of amorphous copolyester, its products are highly transparent, with excellent impact resistance, especially suitable for molding thick-walled transparent products, its processing and molding performance is excellent, it can be designed according to the designer's intention of arbitrary shapes, and can be used in the traditional extrusion, injection molding, blow molding and blister molding and other molding methods, it can be widely used in the plate and sheet, high-performance shrink film, bottles and profiles, cosmetic packaging and other markets, while its secondary processing performance is excellent, and its secondary processing performance is excellent. It can be widely used in the markets of sheet and plate, high-performance shrink film, bottles and profiles, cosmetic packaging, etc. Meanwhile, its secondary processing performance is excellent, and it can be modified by conventional machining.

II. PCTG's role inCosmetic PackagingApplications in the industry

PCTG has glass-like transparency and near-glass density, very good gloss, chemical resistance, impact resistance, and is easy to process, capable of injection molding, injection-drawing-blowing molding, and extrusion-blowing molding. It is also capable of producing unique shapes, appearances and special effects, such as bright colors, frosting, marbling, metallic luster and so on. It is also possible to use other polyesters, elastomers or ABS for overlapping injection molding.

Products include perfume bottles and caps, cosmetic bottles and caps,lipstick tubePETG injection molded products are medical devices such as filters, eustachian tubes, tubing connectors, pumps, clips, and dialysis equipment. Household utensils such as cups, salad bowls, salt and pepper shakers have excellent transparency, gloss, good toughness, processability and excellent colorability.

PCTG is a highly transparent copolyester plastic raw material. It has high transparency, good toughness and impact strength, excellent low-temperature toughness, high tear resistance and good processing performance, excellent chemical resistance. It can be processed by traditional molding methods such as extrusion, injection molding, blow molding and blister molding. Widely used in sheet and plate, high-performance shrink film, bottle and profile market; can be used to produce toys, household utensils and medical supplies, etc.; passed the U.S. FDA on food contact standards, can be applied to food, medicine, cosmetics packaging and other fields.