Application of PCTG in cosmetic packaging materials (1)


1. Understand PCTG and its advantages PCTG is a transpa […]

1. Understand PCTG and its advantages
PCTG is a transparent plastic and an amorphous copolyester. The commonly used comonomer of PCTG is 1,4-cyclohexanedimethanol (CHDM), the full name of which is polyethylene terephthalate-1 , 4-cyclohexane dimethanol ester. 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%.
Has good viscosity, transparency, color, chemical resistance, and resistance to stress whitening. Quickly thermoformed or extrusion blow molded. 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. Traditional molding methods such as extrusion, injection molding, blow molding and blister molding can be widely used in the market of sheet materials, high-performance shrink films, bottles and profiles, and cosmetic packaging. Regular machining finishes.

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