The different types of plastic at a glance
Using plastic is a part of our daily lives, but with so many different types, it can be difficult to tell them apart. In this blog, we set out the main types of plastic, looking at their properties, uses and how they can be recycled. In this blog, we provide clear information on the most common plastics, their characteristics, and how they can be processed and recycled efficiently.
PET (polyethylene terephthalate)
PET is probably the most recognisable plastic, known from plastic bottles for soft drinks and water. It is lightweight, transparent and has good barrier properties against water and oxygen, making it ideal for food and beverage packaging. PET is fully recyclable and after processing is often used to make polyester fibres.
HDPE (high-density polyethylene)
HDPE is a sturdy, strong and dense plastic often used for products that need to withstand high temperatures. These include milk bottles, detergent bottles and some shopping bags. HDPE is highly recyclable and after processing is often used to make pipes, crates and even garden furniture.
PVC (polyvinyl chloride)
PVC is known for its versatility and is used for a wide range of products, from water pipes and window frames to medical equipment and clothing. However, PVC is less easy to recycle because of the presence of chlorine and plasticisers needed to make the material pliable.
LDPE (low-density polyethylene)
LDPE is softer and more flexible than HDPE and is often used for plastic bags, packaging and films. It is also recyclable, but is less often collected for recycling than HDPE and PET due to its light weight and therefore more difficult to handle in the recycling process.
PP (polypropylene)
Polypropylene is hard and heat-resistant, making it a popular choice for hot food containers, lids, straws and medical components. PP is recyclable and is often used to produce automotive parts and industrial fibres after recycling.
PS (polystyrene)
Polystyrene comes in two main forms: as firm, hard plastic and as expanded foam, better known as Styrofoam. PS is used for disposables such as plastic cutlery, CD cases and Styrofoam cups. It is possible to recycle PS, but it does not happen everywhere because it is difficult to process this material.
PLA (polylactide)
Polylactide is a type of bioplastic derived from sources such as corn starch and sugar cane. It is transparent and tough, which is why it is often used for food and beverage packaging where visibility is desired. Although PLA does not have the same barrier properties as some other plastics, it provides sufficient protection for many products. Unlike traditional plastic, PLA is biodegradable under industrial composting conditions, making it a more environmentally friendly option.
Recycling and environmental considerations
Each type of plastic has its own recycling code, which is usually put on products to help consumers separate waste correctly. Recycling plastics is important to reduce environmental impact, but it is also important to pay attention to reducing the use of single-use plastics and choosing alternative materials where possible.
The importance of knowing about plastics
This information on the different types of plastics is important for companies looking to reduce their environmental impact. By making smart material choices and applying new recycling methods, together we can ensure that plastics become an efficient and environmentally friendly choice within our industries. By focusing on recyclable materials and efficient recycling processes, companies can reduce waste while saving costs. Applying this knowledge can help companies produce less waste and contribute to a more effective recycling industry.
