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Polypropylene
Custom Polypropylene Machining Service
Streamline your decision-making with a quick and transparent quote using NOBLE’s online system. Once you’ve received your needs we’ll promptly deliver a polypropylene CNC machining solution tailored . From prototyping to production, we ensure strict adherence to your specifications, providing you with a high-precision part or prototype that performs consistently and is delivered fast.
- Guaranteed Consistent Quality
- Lead Time As Fast As 1 Day
- Cost-effective
- Tolerances Down To ±0.005mm
- 99.5% On-time Delivery
- Highest-Quality Polypropylene Parts, ISO Certified
Our Polypropylene Machining Capabilities
At NOBLE, we are dedicated to supporting you in achieving your manufacturing objectives. By leveraging advanced technology and cutting-edge machining techniques, we continually seek innovative and practical solutions. Our CNC machining capabilities deliver precision-crafted polypropylene prototypes and parts, ensuring exceptional quality at every step.
| Price | $$$ |
| Lead Time | < 4 days |
| Wall Thickness | 0.045in. – 0.1380 in |
| Tolerances | +/- 0.003 in. (0.08mm) with an included resin tolerance that can be greater than but no less than +/- 0.002 in./in. (0.002mm/mm) |
| Max Part Size | 18.9 in. x 29.6 in. x 8 in. (480mm x 751mm x 203mm) |
| Available Polypropylene at NOBLE | PP-H, PP-C, PP-R, PP-Impact, GF-PP, PP-N… |
Characteristics of Polypropylene Machining Materials
Polypropylene is a versatile thermoplastic material widely used in CNC machining due to its lightweight nature, excellent chemical resistance, and ease of processing. In CNC machining, polypropylene can be easily milled, drilled, or turned, but to ensure precision and avoid surface imperfections, it’s important to use sharp.
| Features | Info |
| Subtypes | PP-H, PP-C, PP-R, PP-Impact, GF-PP, PP-N… |
| Process | Injection molding, extrusion, CNC machining, blow molding, and rotational molding |
| Tolerance | +/- 0.003 in. (0.08mm) with an included resin tolerance that can be greater than but no less than +/- 0.002 in./in. (0.002mm/mm) |
| Applications | Automotive Parts, Robotics Parts, Medical Devices, Automation Industry, New Energy, Consumer Goods |
| Finishing Options | Polishing, Bead Blasting, Coating, Flame Polishing, Painting |
Pros and Cons of Polypropylene for CNC Machining
Polypropylene is lightweight, chemically resistant, and easy to machine, but it has lower impact resistance, and heat tolerance, and is prone to scratching. By combining our deep understanding of polypropylene’s material characteristics with our advanced CNC machining capabilities, we can produce high-quality, cost-effective polypropylene components that meet the rigorous demands of your industry.
Types of Polypropylene Machining Materials
Each type of polypropylene offers unique properties for specific applications. By understanding your needs, we recommend the best material for your CNC machining projects, ensuring optimal performance and cost-effectiveness. We use high-quality polypropylene materials and maintain process stability for consistent, reliable results.
Homopolymer Polypropylene (PP-H)
PP-H is widely used in CNC machining for its ease of processing, chemical resistance, and low cost. It’s ideal for applications like containers and piping, offering good machinability and smooth finishes. However, its lower impact resistance limits its use in high-stress CNC applications.
Tensile Modulus: 1300-1600 MPa
Tensile Strain (Yield): 8-10%
Rockwell Hardness: 60-70 R
Heat Deflection Temperature: 220-230°F
Copolymer Polypropylene (PP-C)
PP-C, with enhanced toughness and flexibility, is often chosen for CNC machining of impact-resistant parts such as automotive components and medical devices. The ethylene content improves crack resistance, but machining may require adjusted speeds and techniques to avoid deformation.
Tensile Modulus: 1000-1400 MPa
Tensile Strain (Yield): 10-12%
Rockwell Hardness: 55-65 R
Heat Deflection Temperature: 210-220°F
Random Copolymer Polypropylene (PP-R)
PP-R is ideal for CNC machining of transparent or precision parts, such as medical packaging and food containers. Its improved weldability and resistance to stress cracking allow for high-quality finishes, clear surfaces, and tight tolerances in demanding applications.
Tensile Modulus: 1100-1500 MPa
Tensile Strain (Yield): 8-10%
Rockwell Hardness: 60-70 R
Heat Deflection Temperature: 220°F
Impact Copolymer Polypropylene (PP-Impact)
Impact copolymer PP is designed for superior impact resistance, making it suitable for CNC machined parts exposed to mechanical stress, such as automotive bumpers. Its enhanced toughness requires careful adjustment of machining speeds and tool coatings to prevent wear and ensure optimal results.
Tensile Modulus: 1200-1500 MPa
Tensile Strain (Yield): 15-20%
Rockwell Hardness: 50-60 R
Heat Deflection Temperature: 190-210°F
Glass-Filled Polypropylene (GF-PP)
GF-PP is ideal for CNC machined parts requiring high strength and dimensional stability, such as automotive and electrical components. The addition of glass fibers increases tool wear, so specialized tools and careful processing are necessary to ensure precision under high-stress conditions.
Tensile Modulus: 2000-2500 MPa
Tensile Strain (Yield): 2-4%
Rockwell Hardness: 85-95 R
Heat Deflection Temperature: 250-270°F
Nucleated Polypropylene (PP-N)
PP-N, modified with nucleating agents, enhances crystallization, improving rigidity and surface hardness. It’s well-suited for CNC machining of high-performance parts like thin-walled containers. Advanced machining techniques and cooling methods are used to maintain dimensional stability and prevent warping during processing.
Tensile Modulus: 1400-1600 MPa
Tensile Strain (Yield): 6-8%
Rockwell Hardness: 60-70 R
Heat Deflection Temperature: 230°F
Surface Finishing Options for Polypropylene Machining
Achieving a smooth, visually appealing surface finish is essential when machining polypropylene for both functionality and aesthetics. NOBLE provides a variety of surface treatments as part of its polypropylene CNC machining services, designed to improve the mechanical properties and the appearance of each machined part.
Polishing
Working on metal and hard plastics, our polishing uses highly efficient machinery to get our parts between Ra 0.8~Ra0.1 for a cleaner surface.
Band Blasting
Band blasting cleans the surface of any impurities and peels coating through the propelling of blast media streams over the parts.
Coating
We apply a thin layer of protective polymer with the corona discharge phenomenon to give our part a lasting finish that protects from impacts and prevents wearing down.
Flame Polishing
Flame polishing uses a controlled flame to slightly melt the surface of POM, smoothing out imperfections and creating a high-gloss finish. It’s commonly used for clear, transparent POM parts where aesthetics are crucial.
Painting
Painting involves Spray droplets can be dispersed uniformly or in fine amounts to cover a wide surface area and bring out greater color to the part.
Custom Polypropylene Machining Parts Display
Check out our over a decade of custom Polypropylene machining, including precision Polypropylene prototypes and parts from our valued customers.
Applications of Polypropylene CNC Machining
Polypropylene’s versatility, chemical resistance, and ease of CNC machining make it an essential material across a wide range of industries. For over a decade, NOBLE has delivered exceptional polypropylene products, consistently exceeding customer expectations across industries such as medical, automotive, aerospace, and more, thanks to our deep expertise in CNC machining.
Automotive Parts
Polypropylene is widely used in automotive applications due to its lightweight, durability, and chemical resistance. CNC machining is used to create interior and exterior components like bumpers, dashboards, and storage containers, ensuring precise dimensions and high-quality finishes for durability.
Robotics Parts
Polypropylene is used in CNC-machined robotics components like arms, grippers, and housings due to its lightweight, durability, and low friction. It reduces mechanical wear, ensuring smooth operation and energy efficiency in robotic systems, particularly in applications requiring high precision and mobility.
Medical Devices
In the medical field, polypropylene's biocompatibility and resistance to sterilization make it suitable for CNC-machined medical parts like syringes, diagnostic equipment, and surgical instruments. CNC machining ensures high precision and tight tolerances needed for sensitive medical applications.
Automation Industry
Polypropylene’s wear resistance, low friction, and dimensional stability make it ideal for CNC-machined components in automation, such as conveyors and machine parts. It resists moisture and chemicals, ensuring long-lasting, reliable performance in automated systems, while minimizing maintenance and downtime.
New Energy
In the new energy sector, polypropylene is used for battery enclosures, solar panel components, and wind turbine parts. Its chemical resistance and high-temperature stability protect sensitive components, while its lightweight nature improves energy efficiency in storage and renewable energy systems.
Consumer Goods
CNC machining of polypropylene is used to create a variety of consumer products such as household appliances, toys, and furniture parts. Its versatility, low cost, and ease of machining make it an ideal material for producing durable, lightweight components.
If you are looking for a rapid prototyping manufacturer or a CNC machine shop to fabricate small, medium-volume, or mass-production products, NOBLE is an ideal choice.Our well-trained and experienced staff manufactures parts in line with drawings on modern CNC machines, with the highest accuracy and processing quality in all sizes.In addition, we provide professional design considerations for your CNC machining projects.
Want to get the most professional and fastest service for your CNC machining project? Upload your CAD files now and obtain a quote!
