1. Understand PCTG
    PCTG is a transparent plastic and an amorphous copolyester. The commonly used comonomer of PCTG is 1,4-cyclohexanedimethanol (CHDM), whose full name is polyethylene terephthalate-1 ,4-cyclohexane dimethanol ester. It is a product of the polycondensation of three monomers: terephthalic acid (PTA), ethylene glycol (EG) and 1,4-cyclohexanedimethanol (CHDM) by transesterification. Compared with PET, it has 1,4 more - Cyclohexane dimethanol comonomer has more ethylene glycol comonomer than PCT. Therefore, 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 viscosity, transparency, color, chemical resistance, and stress whitening resistance. Can be quickly thermoformed or extruded blow molded. The viscosity is better than acrylic (acrylic). PCTG is an amorphous copolyester. Its products are highly transparent and have excellent impact resistance. It is especially suitable for forming thick-walled transparent products. Its processing and molding performance is excellent, and it can be designed in any shape according to the designer's intention. It can be used Traditional molding methods such as extrusion, injection molding, blow molding and blister molding can be widely used in sheet materials, high-performance shrink films, bottles and special-shaped materials, cosmetic packaging and other markets. At the same time, their secondary processing performance is excellent and can be Regular machine finishing.
    2. Application of PCTG in cosmetic packaging materials industry
    PCTG has the same transparency as glass and a density close to glass, good gloss, chemical corrosion resistance, impact resistance, and easy to process. It can be injection molded, injection stretch blow molded, and extruded blow molded. It can also produce unique shapes, appearances and special effects, such as bright colors, matte, marble textures, metallic sheen, etc. And other polyesters, elastic plastics or ABS can also be used for over-injection molding.
    Products include perfume bottles and caps, cosmetic bottles and caps, lipstick tubes, cosmetic cases, deodorant packaging, talcum powder bottles and eyeliner cases, etc. PETG injection molded products include medical devices such as filters, Eustachian tubes, tube connectors, pumps, clamps, and dialysis equipment. Household utensils such as cups, salad bowls, salt shakers, pepper shakers, etc., 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, and excellent chemical resistance. It can be processed by traditional molding methods such as extrusion, injection molding, blow molding and blister molding. It is widely used in the board and sheet, high-performance shrink film, bottle and special-shaped material markets; it can be used to produce toys, household utensils and medical supplies, etc.; it has passed the US FDA food contact standards and can be used in food, medicine and cosmetic packaging and other fields.