The Difference Between Pe And Pet.

• Material structure and performance:

PE: PE is a low-density plastic, divided into linear and crystalline types, with good flexibility and moisture resistance, not easy to embrittlement, but the transparency and mechanical strength is low, mainly used in food packaging, water pipes, garbage bags and so on.
PET: PET is a kind of crystalline plastic, with high hardness, transparency and good gloss, tensile strength and heat resistance is good, often used in beverage bottles, food packaging and labels, fiber optics and so on.

• Environmental Protection and Recycling:

PE: Because it degrades easily, it is environmentally friendly, but some high levels of PE may have a weak odor that may affect food quality.
PET: PET is more difficult to degrade, but it can be recycled into new plastic products, which is a recyclable plastic No. 5, slightly less environmentally friendly than PE.

• Cost and Price:

PE: The cost is low because its production process is relatively simple and the market supply is large.
PET: The cost is higher because its production involves the synthesis of glycol esters of dibasic acid, strict environmental standards, and relatively high recycling prices. PE and PET differ in terms of performance, use and environmental characteristics, and which one to choose depends on the actual needs and application scenarios.

• PE and PET materials for health

PE (polyethylene) and PET (polyethylene terephthalate) are two plastic materials that are widely used in food packaging and daily consumer goods, and their impact on health mainly depends on their use and safety.

PE (polyethylene) :
For food packaging, PE is commonly used to produce food-grade plastic bags, such as plastic wrap and garbage bags. PE is safe because it is not easy to leak and has good sealing properties. However, non-food grade PE, such as in industrial uses such as water pipes, may have harmful substances such as plasticizers, so pay attention to choosing food grade products when using them.

PET (polyethylene terephthalate) :
PET, a common material used in beverage bottles, is transparent, lightweight and heat-resistant. PET bottles at high temperatures may release Bisphenol A (BPA, bisphenol A), a potential endocrine disruptor that may have health effects from long-term exposure.

Suggestion:
When purchasing food packaging, try to choose PE or PET products labeled as food grade, and avoid using products with bright colors or heavy odors, which may indicate the addition of harmful substances in the plastic.
Do not use or heat PET containers at high temperatures for long periods of time to reduce the risk of BPA release.
Classification and recycling, to avoid plastic waste into the environment, reduce the potential harm to the environment and human body.

• The difference between waterproof coil PE and PET.

The application of PE (Polyethylene, Polyethylene) and PET (Polyethylene Terephthalate, polyethylene terephthalate) in waterproof coils is different: 

1. Material and characteristics:
PE waterproof coil: mainly made of polyethylene material, has excellent moisture resistance, tensile strength and anti-aging properties, chemical corrosion resistance, easy construction and maintenance, suitable for roof waterproof.
PET waterproof coil: PET is less used in waterproof coil, because PET has good heat resistance, but water resistance and flexibility are relatively poor, long-term exposure to the water environment may affect its performance.

2. Weather resistance:
PE waterproof coil has good aging resistance in the outdoor environment, because it has good resistance to ultraviolet light, suitable for waterproof public buildings and infrastructure.
PET is not as resistant to aging as PE, so it is not the preferred material for waterproof coils, it is more suitable for some low-strength waterproof applications, such as roof drainage.

3. Cost and environmental protection:
The cost of PE waterproof coil is relatively low due to its simple production process, large market supply, and low environmental impact due to its degradability.
PET is more expensive because it requires a specific production process and has a limited recycling rate. However, PET film is not easy to degrade, and its impact on the environment is slightly greater than that of PE.

 

Safety precautions:
Whether it is PE or PET, it is necessary to ensure that the product meets the appropriate safety and quality standards.
Avoid using PET containers for long periods of time or at high temperatures, especially food containers.
Waste sorting, PE and PET can all be recycled, but the recycling and disposal process of PET needs to be more careful to avoid potential environmental risks.