Firstly, let's understand what PCT-G material is
PCT-G (also known as PCTG) material is an amorphous copolymer ester, which is one of the modified PCT materials. Modified PCT is divided into diol modified PCT (i.e. PCTG) and acid modified PCT (i.e. PCTA). PCTG has good viscosity, transparency, color, chemical resistance, and stress whitening ability.

The characteristics of PCTG material are very suitable for making water cups:
1. PCTG has excellent toughness and impact resistance. The extruded sheets made of PCTG material are usually 15 to 20 times tougher than general acrylic and 5 to 10 times tougher than impact modified acrylic. For some casual cups, sports water cups, etc., they need to be taken out frequently, and bumps and dents are difficult to avoid. Good impact resistance can prevent the water cup from breaking or being damaged during use.
2. Good transparency and glossiness, comparable to the transparency and glossiness of glass. PCTG material water cup products look transparent and pure, with good glossiness and a crystal like texture, making it easy to observe the inside of the water cup.
3. It is easy to process and can be produced using traditional molding methods such as extrusion, injection molding, blow molding, and vacuum forming. For traditional water cup factories, they can directly switch to PCTG material water cups.
4. Good processing and forming performance, low production difficulty, suitable for personalized shape design, and can also produce unique shapes, appearances, and special effects, such as bright colors, frosted, marble textures, metallic luster, etc. For the increasingly personalized needs of water cup users. The PCTG feature is very suitable for the future development direction of water bottles.
5. PCTG material can withstand various chemicals and commonly used cleaning agents, with good corrosion resistance. During daily cleaning, PCTG material water bottles will not be damaged by detergent and will still maintain the same glossiness as new products. In addition, you can also pack some acidic and alkaline beverages, such as lemon water, soda water, etc.
6. The PCTG materials are all environmentally friendly and do not produce BPA Free, which meets the requirements of food contact management. A water cup is a container used to hold food, and it is a frequently used item in our daily lives. Its material should ensure safety and peace of mind, and PCTG is a very suitable material for making water bottles.

It is worth mentioning that TRITAN also belongs to PCTG, and water cups made of TRITAN material have high popularity and recognition among users. The following is a comparison of three types of copolymer monomers for PCT, PCTG, and TRITAN materials:
PCT terephthalic acid (PTA) 1,4-cyclohexanedimethanol (CHDM)
PCTG terephthalic acid (PTA) 1,4-cyclohexanedimethanol (CHDM) ethylene glycol (EG)
TRITAN terephthalic acid (PTA) 1,4-cyclohexanedimethanol (CHDM) ethylene glycol (EG) tetramethylcyclobutanediol (CBDO)
Generally, when the CHDM content is below 50%, it is called PETG, and when the CHDM content exceeds 50%, it is called PCTG. From the above table, we can roughly see the relationship between these three types of materials, which we hope will be helpful for you when choosing a water cup.