High-Volume Polypropylene (PP) Plastic Injection Molding

To meet the needs of high-volume operations, SR Plastics is a California-based plastic injection molding shop delivering high-quality polypropylene plastic injection molding solutions. We work with a wide variety of materials and have extensive experience manufacturing unique components from polypropylene and other plastics. Our full suite of advanced molding equipment enables us to produce polypropylene parts that meet your specifications.

We offer secondary services and partner with SR Machining for in-house CNC machining services to create complete parts, components, and products to your exact needs. As a high-volume manufacturer, we can support your project from start to finish.

Polypropylene Injection Molding Capabilities

As an AS9100- and ISO 9001-certified plastic injection molding shop, SR Plastics can create complete, custom-molded parts, components, and products to your exact requirements. Our practices are compliant with applicable industry standards and quality practices, supported by capabilities that include:

Full equipment suite: With 32 plastic injection molding machines and 2 rubber presses, we can handle parts ranging from 50 to 1,000 tons.
In-house tooling: Our tool room allows us to maintain and produce tooling, as well as perform tool transfers.
Secondary operations: For complete products, we offer secondary operations including overmolding, hot stamping, assembly, sonic welding, and PAD printing.

Applications for Polypropylene Plastic Injection Molding

Polypropylene is a thermoplastic polymer known for its impact resistance, light weight, and suitability for food contact. As one of the most widely used plastics worldwide, it is a highly flexible, chemical-resistant material with low electrical conductivity, making it a popular choice for low-cost, large plastic goods and components. With a mass density of 0.9g/cm³, 0.010-0.025” shrinkage, opaque clarity, and 2.5-3.5 tonnage per square inch, polypropylene is used across applications, such as:

Toys
Storage containers
Sporting goods
Home appliances
Power tools
Dishwasher-safe containers and cups
Medical products
Construction products and hardware

Serving Various Industries with High-Volume PP Injection Molding

SR Plastics offers advanced, high-volume polypropylene injection molding services to support a wide range of industries, including:

With prototyping and production tooling capabilities, SR Plastics is a full-service partner for all of your plastic injection molding needs.

Contact SR Plastics for Polypropylene Plastic Injection Molding Today

With over 50 years of combined experience, SR Plastics is a one-stop shop for custom plastic injection molding services and CNC machining. We offer fully customizable solutions for a wide range of materials, including prototyping and production, through one reliable provider, ensuring your completed product meets your exact requirements.

Through extensive in-house capabilities for engineering, tooling design, manufacturing, inspection, and secondary services, we can handle both molded parts and plastic machining, providing versatility and flexibility across your production and finishing processes.

SR Plastics offers proven expertise across industries, including aerospace, medical, industrial pump and fluid management, and more, to support complex applications. Additionally, we provide vendor-managed inventory (VMI) programs to monitor and manage stock levels, reducing stockouts and rush orders. Our team is focused on your complete satisfaction, providing hands-on engineering support, manufacturability advice, quality, and matching solutions to your exact needs. Contact us to discuss your project or request a quote to get started.