PE plastics, or polyethylene, are very common thermoplastics found in many different industries. They are made from the polymerization of ethylene and there are different types of them, which differ in properties and applications.
The two most common types of PE plastics are LDPE (low density polyethylene) and HDPE (high density polyethylene). LDPE is a soft and flexible material, while HDPE is rigid and hard. Other types of PE plastics are MDPE (medium density polyethylene) and LLDPE (linear low density polyethylene).
PE plastics are resistant to water, acids, alkalis and some solvents. They are also UV resistant, so there is no problem with outdoor use.
As a result of these properties, PE plastics are often used in packaging and packaging applications such as garbage bags, plastic bags, food and medicine packaging. In the construction industry, PE plastics are used to produce insulation, foils, pipes and covers. In the automotive industry, PE plastics are used as bumpers and covers, while in agriculture they are used to make hoses and films for irrigation and plant protection.
Another important factor that determines the use of PE plastics is their density. LDPE has a low density, which means it has lower strength and hardness than HDPE. LDPE is therefore ideal for applications that require softness and flexibility, such as hoses and insulation materials. HDPE, on the other hand, has a high density, which means it has greater strength and hardness. HDPE is often used to manufacture rigid items such as covers, pipes and bumpers.
PE plastics are also recyclable, making them an environmentally friendly choice. Recycled PE plastic can be used to make new items, reducing the environmental burden.
Let’s recap, why use PE plastics?
- Resistance to water and corrosive substances
- UV resistance
- Light weight – easy to handle
- Easy workability – excellent mouldability
- Low cost – PE plastics are relatively cheap to produce and widely available