After we discuss the difference between PETG and PET. And know many advantages of PETG and PETG products. We will have doubt about the question:

Can PETG replace PET?

PETG is a transparent, non-crystalline copolyester. Compared with PET, it has more 1,4-cyclohexanedimethanol comonomer and more ethylene glycol comonomer than PCT. So, the performance of PETG and PET , PCT is very different. PETG sheet has outstanding toughness and high impact strength. Its impact strength is 3-10 times that of modified polyacrylates. It has a wide processing range, high mechanical strength and excellent flexibility.

PETG has the same transparency as glass and density close to glass. Easy to process, and can be injection, injection stretch blow and extrusion blow molding. It can also produce unique shapes, appearances, and special effects. Moreover, another polyester, elastic-plastic or ABS can also be used for overlapping injection molding.

The order of temperature resistance with other materials is:


Application scope such as

1. Plates and sheets.

PETG sheet has outstanding toughness, high impact strength and excellent formability. So when cold bending, no whitening and cracks. easy to print and modify, they are widely used in indoor signs, storage racks, and automatic sales. Freighter etc.

PETG cards and credit cards are currently mainly used in Europe. They are also increasingly used in North America and Asia. For countries that require card materials to be more environmentally. PETG may be an alternative to polyvinyl chloride materials. Like the second-generation ID card, it is made of PETG film.

2. Pipe.

Due to the good toughness of PETG, the product is hard, transparent. And has good luster, does not turn white under pressure, and is easy to form and post-process. Widely used in building decoration and materials.

3. Film use.

ETG can be specially applied to high-performance shrink film, with a final shrinkage rate greater than 70%. It can be made into packaging for complex-shaped containers. And with high plastic absorption, high transparency, and high gloss. It has the advantage of low natural shrinkage during storage. It is used in shrink labels for beverage bottles, food, gift packaging, and electronic products.

4. Bottle use.

PETG has passed the US FDA’s food contact standards. It can be used to improve the low toughness of traditional polyester beverage bottles. It is highly transparent, not easy to break. It can block light, isolate air, ensure the quality of the drink. Also, it has an explosion-proof function to prevent fragments from splashing when the bottle is broken. It is especially suitable for manufacturing large-capacity thick-walled transparent containers. Such as beer bottles.


PETG is better in transparency and gloss, and is easy to process, print and color. It also has environmental advantages.

PETG sheet VS PC sheet and acrylic

PETG is easy to produce products with complex shapes and larger stretches. Because it has outstanding thermoforming properties. And the molding cycle is shorter, the required temperature is low, and the yield is high.
At the same time, the toughness of the PETG extruded sheet is 15-20 times that of general acrylic and 5-10 times that of impact-modified acrylic. It has a very good bearing capacity in processing, transportation and use, and can more effectively prevent rupture.

However its physical properties are much worse than PC. It has higher transparency and chemical resistance than PC and can prevent yellowing. Does not contain bisphenol A, burns without black smoke, and can be recycled.


It is better than ordinary PET in surface properties such as printability and adhesion. PETG has a transparency comparable to PMMA. The hardness, smoothness and post-processing ability of the product are stronger than PET. The finished product is very high-end. Besides to separate applications, it is also compatible with ordinary PET. The use of co-extrusion compound.

Compared with PET,the disadvantage of PCTG is also obvious, that is, the price is very high, 2-3 times that of PET. At present, most of the packaging bottle materials on the market are mainly PET materials. It has the characteristics of lightweight, high transparency, impact resistance, and not fragile.

In fact, the advantages of PETG compared to PET are relatively limited, and it is not a huge change. The application of some lighter bottles and cosmetic products will have advantages over PET. Perhaps it can make achievements in some special fields such as optical materials. But if the price of PETG cannot be lowered, even under the pressure of environmental protection. It may be difficult to completely replace PET.

So until now, do you have an understand about Can PETG replace PET?

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