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Weerg staff Jul 13, 2021 3:33:31 PM 9 min read

What Are the Advantages of Polypropylene?

Discovered by German chemist Karl Rehn and an Italian chemist Giulio Natta in the 1950s, polypropylene (PP) is one of the most spearheading plastics on the market today. From its high melting point, no reactiveness to water/detergents, crack resistance, and durability characteristics, it all equates to why polypropylene is fundamental in manufacturing.

What is Polypropylene used for?

What products are made from polypropylene? As the most common thermoplastics in the world, the uses of polypropylene are quite extensive. The benefits range greatly from packaging, developing plastic parts for machinery and equipment, and is even used in fabric/textile development. For some more example-driven insight, below are some key uses and the reasons behind them.

1. Automotive Industry

Why? Because PP is so flexible, cost-effective, and durable, it is often used for things like cladding, bumpers, interior components like dashboards, car batteries, and much more.

3D printing services_3D print online_Polypropylene PP_Grey unrefined_3D printed with HP MJF Multi Jet Fusion_by Weerg_001

2. Diverse Packaging

Why? The flexibility of polypropylene means it is an ideal “go-to” for a diverse range of packaging. With it being safe for food contact along with being chemically resistant, PP is often taken advantage of in three main sectors: tobacco, clothing, and food/confectionery packaging. Some of those include things like crates, bottles, jars for detergent and toiletries, and thin-wall containers for foods like yogurt cups.

Stampa 3D online_Pezzi 3D su misura_Polipropilene PP_Stampato in 3D con HP MJF Multi Jet Fusion_ grigio grezzo_by Weerg_011

3. Fashion and Sports

Why? Since PP is more fire-resistant than wool, the fashion and sports industries use this plastic as well. Furthermore, given its resistance to environmental factors like sun, mold, water, and bacteria influences, PP is used for many outdoor appliances, sports-clothes equipment, undergarments, and accessories like tote bags.

3D printing services_3D print online_Polypropylene PP_Grey unrefined_3D printed with HP MJF Multi Jet Fusion_by Weerg_004

4. Medical Applications

Why? Going from fashion and food to medical, PP has also seen growth within the medical industry. With polypropylene BASF Ultrasint holding the ability to withstand chemically rich cleaning agents, disinfectants, solvents, and high temperatures, it makes it a reliable plastic for syringes, medical vials, specimen bottles, and pill containers. In summary, PP's applicational uses are subdivided into three categories: medical devices, packaging in general, and packaging systems for solid and liquid pharmaceuticals.

Stampa 3D online_Pezzi 3D su misura_Polipropilene PP_Stampato in 3D con HP MJF Multi Jet Fusion_ grigio grezzo_by Weerg_008

5. Houseware:

Why? There is a very promising chance there is PP in your home as we speak. Being the heat resilient, flexible, durable, and colorfastness material that it is, polypropylene is used in creating everyday consumer products like rugs, carpets, mats, microwave containers, plates, toys, and luggage. In addition, it can be found in many other in-house electronics like washing machines and dishwashers.

What are the Properties and Advantages of Polypropylene?

The best part is that regardless of the size and usage, this material offers incredible benefits that make it so widely sought out.

  • Water, chemical, and detergent resistant
  • Highly resistant to corrosion and chemical leaking
  • Malleable and fatigue resistant
  • Resists to freezing
  • Can be molded into any desired shape and remolded several times without degradation
  • Classed as an insulator due to not conducting electricity well
  • High tensile strength, as it can withstand 4800 psi.
  • Lower density compared to other plastics, which saves money due to low weight

Conclusion - Polypropylene is the Steel of Plastics

As you can see, Polypropylene (in Weerg we use PP/Polypropylene BASF Ultrasint printed with HP multi jet fusion technology) is used in just about every plastics market today. From products being used to protecting regular societal products to shielding medical equipment, it would be hard to imagine a world without this durable and versatile resource in it. Overall, polypropylene plastic has so many respected advantages, can save money, and offers reliable assurance that projects will have favorable long-term outcomes.

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Sources and further reading

https://www.creativemechanisms.com/blog/all-about-polypropylene-pp-plastic
https://omnexus.specialchem.com/selection-guide/polypropylene-pp-plastic
https://www.thoughtco.com/what-is-polypropylene-820365
https://all3dp.com/1/polypropylene-pp-all-you-need-to-know/
https://www.plasticsmakeitpossible.com/about-plastics/types-of-plastics/professor-plastics-one-of-the-plastics-superheroes-polypropylene/
https://www.healthline.com/health/is-polypropylene-safe#is-it-bpa-free

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Weerg staff

Weerg's staff of engineers and technicians writes short and simple articles to answer the most interesting questions quickly and pleasantly.