What are the 7 types of plastic?


These changes in the material have a direct impact on its recyclability. Thus, the elements of its composition will determine how possible it is to recover material from these plastics to reuse it and establish a less polluting consumption chain.

It is used in beverage bottles such as soft drinks or water, as well as other light packaging such as food packages, cream jars and other pharmaceutical uses. Its second life is usually new bottles, textiles for clothing, carpets, models, tarpaulins and nautical sails or yarns and ropes. Its recyclability level is 1 and the toxic substances it contains are antimony, formaldehyde, acetaldehyde and phthalate. It accounts for 11% of plastic waste on the planet.

It is used in many non-transparent containers such as milk bottles, detergents, food packages and motor oil. Its use after recycling is usually for new packaging, boxes, flower pots, garbage containers, toys, pipes, pieces of urban and garden furniture or new detergent bottles. Although its recyclability level is 1, it is a more resistant material than PET and contains antimony as a toxic substance. It accounts for 14% of plastic waste in the environment.

What is the classification of plastics?

Depending on their characteristics, there are three types of plastic classifications: according to their chemical structure, according to their polarity and according to their application. Depending on their chemical structure and temperature behavior, plastics can be classified into thermoplastics, thermosets and elastomers.

What is the most widely used plastic in the world?

Get to know PET plastic, the most widely used plastic in the world.

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What is the most abundant plastic?

– Polyethylene, which is used for the manufacture of packaging, pipes and cable sheathing, is the most common plastic at the bottom of the Mediterranean, according to a study by the Consolidated Research Group in Marine Geosciences of the University of Barcelona (UB).


In our ongoing effort to provide educational resources on plastic pollution and sustainability, we thought we’d address one of the most common questions we receive: isn’t plastic the same thing? In short…no.

However, it’s understandable that many people assume it’s one material, top to bottom anyway. In fact, there are hundreds of types of plastics (also called polymers), but only a few that we interact with on a regular basis.

Examples: plumbing pipes, credit cards, human and pet toys, rain gutters, teething rings, intravenous fluid bags and medical tubing, and oxygen masks.

A softer, clearer and more flexible version of HDPE. Often used as a liner inside beverage cartons and on corrosion-resistant work surfaces and other products.

This durable plastic is more heat resistant than others, making it ideal for things like food packaging and food storage that is made to hold hot items or heat itself. It is flexible enough to allow for slight flexing, but retains its shape and strength for a long time.

What is the name of the plastic?

Plastics are synthetic chemical substances, called polymers, with a macromolecular structure that can be molded by heat or pressure and whose main component is carbon.

What type of material is plastic?

Plastics are synthetic materials obtained by polymerization reactions from petroleum derivatives. They are organic materials, just like wood, paper or wool. … Plastics have different properties that allow them to be molded and adapted to different shapes and applications.

How are plastics sorted for recycling?

As a general concept, we can say that all plastics are recyclable, the first step being their separation by type of resin. There are 7 different categories: PET, HDPE, PVC, LDPE, PP, PS, and a seventh category called “others”.

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The environment is sensitive to certain plastic containers and packaging. That is why it is essential to identify them in order to be able to take advantage of those that do not have a harmful impact and to know how to differentiate plastic recycling.

It is distinguished by its greater thickness and rigidity, which makes it more resistant to both heat and cold. It is used to manufacture dairy bottles, carafes, detergents, plastic bags… It is recyclable and can be used to make flower pots or garbage containers. It is also reusable if it is in optimal hygienic conditions.

It stands out for being a very safe material. Hence it is present in packaging such as water bottles, supermarket bags, plastic wrapping and gloves. It can be recycled, especially as a bag.

It is widely used in cafeterias and fast food restaurants because, in particular, it is found in hamburger containers, disposable cups for hot drinks, cutlery and ice cream tubs. It is highly contaminated, so it should not be reused to contain other food. However, it can be recycled because it is suitable for making plastic joists or flower pots.

Which plastics are the most recyclable and how are they classified?

Types of plastics

PET (Polyethylene terephthalate): PET is mainly used in the production of beverage bottles. … LDPE (Low Density Polyethylene): LDPE is found in grocery bags, bread bags, plastic wrapping plastic. LDPE can be recycled as grocery bags again.

How is plastic waste classified and identified?

There are 4 main types: crystal PS, transparent, rigid and brittle, high impact PS, resistant, expanded PS, very light, and extruded PS, similar to expanded PS but denser.

What are the two types of plastics according to their origin?

Plastics depending on their origin can be: … Some of them can be called Biodegradable Plastics. – Synthetic (artificial): those that are made from compounds derived from petroleum, natural gas or coal. Most of them belong to this group.

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Types of transparent plastics

Chemically PET is a linear thermoplastic polymer, as it softens with heat and hardens with cold, reversibly, it has a high degree of crystallinity. PET plastic is produced by a polycondensation reaction between terephthalic acid and ethylene glycol. It belongs to the group of synthetic materials called polyesters.

I personally would radically eliminate it from regular use. I would only use it if I had no other alternative, for example when I leave the house, and I have no access to drinking water and I am forced to use a PET water bottle. (It is rare that it happens because I usually go equipped with my bottle with filter, but anyone can have an oversight). I would also avoid clothing made with PET (polyester) at all costs for the same reason.

High-density polyethylene is a thermoplastic polymer of the olefinic polymer family. It is formed with many repeating ethylene units. This plastic is also labeled HDPE (high Density Polyethylene).