Polypropylene (PP)

Retlaw Industries Polypropylene Manufacturing

OEM injection modling for Polypropylene

Advantages of Polypropylene Plastic in Injection MoldingPlastic Water Bottle Manufacturing

Polypropylene is a plastic polymer known for its tough yet flexible consistency, and businesses all over the world use it for manufacturing storage containers, such as bottles and plastic boxes. Polypropylene has a strong resistance to fatigue and chemical corrosion, making it useful for most types of plastic storage containers, kitchenware, water bottles, and even insulation and piping systems.

The professionals at Retlaw Industries manufacture high-quality plastic parts with polypropylene plastic material, designed to your exact specifications. We design, mold, and engineer the finest plastic parts for your industry, and the plastic professionals at our Wisconsin facility promises quality as well as a fast turnaround time for all your polypropylene thermoplastic components.

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Properties of Polypropylene (PP) at Room Temperature

Chemical Formula (C3H6)n
Melting Point (°C) ~130°C
Tensile Strength ~4700 psi
Impact Strength ~0.7 ft-lb/in notched Izod 
Hardness Level (Rockwell) R92
Flexural Modulus ~6000 psi 


Polypropylene is commonly used in applications such as:

Plastic Containers

PP Plastic for Containers

Reusable Water Bottles

PP Plastic for Reusable Water Bottles

Medical Components

PP Plastic for Medical Components

Outdoor Furniture

PP Plastic for Outdoor Furniture

Toys & Novelties

PP Plastic for Toys


PP Plastic for Luggage

Benefits of Using Polypropylene (PP) Plastic

As mentioned above, polypropylene is highly useful for manufacturing containers, bottles, plastic boxes, and piping. Some of the most common advantages of using polypropylene in product manufacturing include it being:

  • Inexpensive – polypropylene plastic generally doesn’t cost much to manufacture
  • Moderate strength and stability –a strong plastic that holds up against general wear and tear
  • Flexibility – can be molded into a variety of shapes, making it useful for plastic injection molding
  • Heat Insulating – can retain heat, making it useful for warm or hot food storage
  • Chemical resistant – doesn’t warp or disintegrate when in contact with certain chemicals
  • High impact strength – doesn’t break under impact or high pressure
  • Low friction – polypropylene is an ideal plastic when working with high heat and friction
  • Moisture resistance – is completely waterproof

Polypropylene is a very customizable plastic since it can also be combined with other materials, such as rubber, in order to create an even stronger co-polymer. Polypropylene is also a great plastic to make food containers with since it does not contain BPA, also known as Bisphenol A, a synthetic compound unsafe for human consumption. 

Retlaw Industries Manufactures Polypropylene Plastic Parts for Your Industry

Polypropylene is a thermoplastic, meaning it can be easily molded into different shapes due to its semi-crystalline nature and low melt viscosity. The professionals at Retlaw Industries can design and mold custom polypropylene plastic components for your industry, including idler pulleys, roller chain sprockets, and rebar chairs. Whatever you need, the experts at Retlaw can deliver.

American Polypropylene Plastic Manufacturer

Retlaw Industries stands as the forefront manufacturer of polypropylene plastics in the U.S., dedicated to meeting the demands of companies across Colorado, Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania, Washington, Wisconsin, and beyond. Explore the strength of polypropylene products from Retlaw Industries for plastics that set your business apart!

Contact the polypropylene plastic manufacturers at Retlaw today to get a product quote. 
Retlaw sells in all 50 states. Let's get together and build a solution.
For over 40 years, Retlaw has produced quality injection molding tools which has led us into thermoplastic injection molding for a wide variety of industries. With over 19 injection molding machines, decades of collective experience, and over 50,000 square feet under roof and room to expand, we are always ready for your new projects.
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