Understanding the 7 Types of Plastic and How to Recycle Them Properly

Understanding the 7 Types of Plastic and How to Recycle Them Properly

Every day, we use various types of plastic for packaging without realizing that there are actually seven different types of plastic materials.
Understanding these types is essential when it comes to sorting waste for recycling. Properly separating plastics before disposal is a key step in reducing waste and protecting the environment.

However, not all plastics are recyclable in the same way. Each type has its own recycling process, and some may not be recyclable at all.
This article will help you understand the 7 types of plastic, their identifying symbols, and the proper way to handle each one.

Plastic Type 1 : Polyethylene Terephthalate (PET or PETE)
PET is a clear, tough plastic with good impact resistance. It’s commonly used for water bottles, soft drink bottles, and other beverage containers.

Recycling : PET can be recycled into polyester fibers used in clothing, or turned into new plastic packaging.

Plastic Type 2 : High-Density Polyethylene (HDPE)
HDPE is a strong, high-density plastic that is less transparent than low-density polyethylene. It has excellent resistance to acids and alkalis and acts as a good moisture barrier.
Common examples include milk jugs and bottles for cleaning products.

Recycling : HDPE can be recycled into plastic crates, piping, and trash bins.

Plastic Type 3 : Polyvinyl Chloride (PVC)
PVC is a strong plastic with low permeability to steam and air, and it has good resistance to oils and fats. It is commonly used in water pipes, alcohol beverage bottles, and medical equipment.

Recycling : PVC can be recycled into rain gutters and synthetic wood panels.

Plastic Type 4 : Low-Density Polyethylene (LDPE)
LDPE is a lightweight, flexible, and translucent plastic. It is commonly used in plastic bags and food wrap films.

Recycling : LDPE can be recycled into garbage bags and new plastic films.

Plastic Type 5 : Polypropylene (PP)
PP is a lightweight and durable plastic with excellent heat resistance. It is commonly used in electrical insulation, bottle caps, food containers, hot food bags, and straws.

Recycling : PP can be recycled into plastic bins, ropes, and furniture.

Plastic Type 6 : Polystyrene (PS)
PS is a lightweight and transparent plastic that is brittle but resistant to acids and alkalis. It is easy to mold, making it suitable for foam boxes and electronic components.

Recycling : Polystyrene is difficult to recycle, but it can be used to produce certain types of construction materials.

Plastic Type  7 : Other (Miscellaneous Plastics)
This category includes all other types of plastic not classified under Types 1–6. These plastics are often blends or specialty types that can still be remelted and reused in certain cases.

Recycling : Some Type 7 plastics can be recycled, depending on their composition, but processing methods vary.