How is polypropylene plastic different from polyethylene?

How is polypropylene plastic different from polyethylene?

Both polyethylene and polypropylene are two of the most widely used plastic materials today. In fact, although they are both polymer compounds, they have different chemical compositions:

  • Polypropylene (PP) is a polymer of propylene (composed of 3 carbon + 6 hydrogen atoms).
  • Polyethylene (PE) on the other hand, is a polymer of ethylene (composed of 2 carbon + 4 hydrogen atoms).

Polyethylene (PE)

Polyethylene is currently one of the most economical plastic materials. Due to its great versatility, in addition to the manufacture of plastic bags, its use extends to the manufacture of a myriad of products of our daily life as containers of cleaning products, detergents, pipes...

The vast majority of industrial companies opt for their choice. A study carried out in 2021 by the environmental encyclopedia Concepto, states that an estimated 81 million tons of polyethylene are generated worldwide.

What are the environmental benefits of polyethylene (PE)?

Among the environmental advantages of polyethylene, the following stand out:

  • ow carbon footprint.
  • mprove environmental impact throughout the product life cycle.
  • ong service life: high flexibility prevents polyethylene from breaking easily.
  • Easily recyclable material.

In Coplasem we have more than 25 years of experience in the manufacture of polyethylene bags for industrial use, open mouth or valve type filling system.

What types of polyethylene (PE) are there?

Depending on their degree of density, 2 main types of polyethylene are differentiated:

  • LDPE (Low Density Polyethylene): it is characterized by its use in the industrial sector: pipes, knobs, industrial packaging, paper film, bubble wrap, plastic bags... In fact, it is a recyclable material. In turn, another of its strengths is its high tolerance to chemical reactions.

  • HDPE (High Density Polyethylene): as its name suggests, it has a higher density than Low Density Polyethylene (LDPE). Its use is focused on gas pipes, mechanical parts, bags for the food sector (mainly supermarkets)...

In most of the occasions, the recycling process of HDPE is carried out through mechanical recycling. This recycling process is based on the crushing of the material with the objective of reusing it for the manufacture of a new plastic product. In this way, it will feed a circular economy in favor of the preservation of the environment.

Polypropylene (PP)

Polypropylene plastic is used in a wide range of products in the textile, food, medical and automotive industries. This thermoplastic polymer is easily adaptable during the manufacturing process. It is possible to include certain additives in order to avoid the use of polypropylene in the production process.ar la suciedad o hacer que la pintura se adhiera mejor al producto.

Main advantages of polypropylene (PP)

Among the advantages of polypropylene, the following stand out:

- High level of impermeability: it will not corrode or be damaged by water due to its low level of liquid absorption.

- It is a very lightweight material.

- High resistance to substances and chemicals.

- Suitable for working in processes with high temperatures (due to its high melting point).

- High mechanical resistance (to pressure and impacts).

- Low environmental impact: due to its composition - 99% hydrogen and carbon (both non-polluting elements).

If you are looking for sustainable and environmentally safe packaging, polypropylene is one of the materials you should use in your company. Despite its low cost, it offers high quality and countless advantages.

In Coplasem we know well the need for these bags in the industrial sector. We have the best quality - price ratio of polypropylene bags, also known as raffia bags.

In Coplasem we also offer polyethylene and polypropylene free bags.

Don't forget that, due to our wide variety of bag products in stock, in addition to traditional bags we also offer water soluble Polyethylene (PE) and Polypropylene (PP) free bags.

After reading this article, do you still doubt which type of plastic material to choose for your company? Our team will inform you about the advantages of our polyethylene (PE) and polypropylene (PP) products and will help you choose the best solution for your business. Ask for information without obligation.

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