Analysis of the differences between plastic PE and PET and their respective advantages

First, let's explore the main differences between plastic PE and PET. The colors of these two plastics when burning are significantly different.

When PE material burns, its flame is yellow on the top and blue on the bottom, while the flame of PET material is orange. In addition, PE material emits a paraffin smell after burning, which is similar to the smell when we burn candles, while PET material has a sour smell when burning. In addition, we can also distinguish the two plastics by looking at the numbers on the bottom of the bottle. The number 1 usually represents PET, while the number 2 represents PE.

Parting line
PE plastic bottles usually have a clear line under the bottom of the bottle. This line is the parting line, which is used to distinguish different parts of the bottle. In contrast, PET plastic bottles usually do not have this feature.

Transparency
PET plastic bottles have excellent transparency, and can even reach a fully transparent state, while the transparency of PE plastic bottles is relatively low, usually only about 30%. This feature makes PET plastic bottles more advantageous in visual effects.

The advantage of PE plastic is that it has very little water absorption and is insoluble in water, so it has excellent moisture resistance. In addition, it also has good insulation properties, which makes it widely used in many fields. In addition to being commonly used in food and medicine packaging, PE plastic also plays an important role in the construction industry.

The advantages of PET plastic include light weight, high transparency, impact resistance and not easy to break. It can also effectively block carbon dioxide gas, so that soda can keep "gas" and have excellent preservation.

In addition, the heat resistance and pressure resistance of PET plastics make it dominate the field of drinking packaging. Many beverages that can only be fermented by high-temperature bacteria, such as flavored water, juice, dairy products, etc., are gradually packaged in PET bottles.
Today, with the increasing awareness of environmental protection, PET bottles are gradually replacing traditional packaging materials with their characteristics of low environmental pollution and energy consumption.

At the same time, its excellent heat resistance and pressure resistance also make it stand out from the competition, successfully replacing traditional packaging materials such as PVC bottles, packaging bags, aluminum cans, iron cans and glass bottles, and becoming the packaging choice with the most growth potential.