Pp Filament: Types, Properties, and How It Enhances Industrial Performance

Types of PP Filament

PP filament, short for Polypropylene filament, is a popular thermoplastic polymer used extensively in 3D printing due to its excellent toughness, chemical resistance, and recyclability. Known for its low density and high fatigue resistance, polypropylene is ideal for functional parts that require durability, flexibility, and resistance to solvents and moisture. Its semi-crystalline structure provides good impact strength and a low coefficient of friction, making it suitable for living hinges, snap-fit components, and industrial applications.

Standard Polypropylene

The most widely used and accessible form of PP filament, offering balanced mechanical and chemical properties.

Advantages

• Excellent chemical resistance
• High impact and fatigue resistance
• Lightweight and low friction
• Cost-effective and recyclable

Limitations

• Prone to warping without proper bed adhesion
• Requires heated build chamber for large prints
• Lower stiffness compared to reinforced variants

Best for: Prototypes, consumer products, containers, and functional parts exposed to chemicals

Carbon Fiber Reinforced PP

Enhanced with carbon fibers to significantly improve strength, stiffness, and dimensional stability.

Advantages

• High strength-to-weight ratio
• Improved rigidity and load-bearing capacity
• Reduced thermal expansion
• Ideal for structural and mechanical components

Limitations

• More abrasive to nozzles (requires hardened steel)
• Reduced flexibility and impact absorption
• Higher cost than standard PP

Best for: Drone frames, automotive brackets, tooling, and high-stress mechanical parts

Glass-Filled Polypropylene

Reinforced with glass fibers to enhance stiffness, strength, and heat resistance.

Advantages

• Superior dimensional stability
• Increased tensile and flexural strength
• Better creep resistance under load
• Improved surface hardness

Limitations

• Brittle under high impact
• Increased nozzle wear
• Less flexible than pure PP

Best for: Industrial enclosures, gears, automotive interiors, and rigid fixtures

Elastomeric Polypropylene

Blended with elastomers to provide rubber-like flexibility and high fatigue resistance.

Advantages

• Excellent flexibility and elongation at break
• Outstanding fatigue resistance (ideal for hinges)
• Vibration damping properties
• Retains shape after repeated bending

Limitations

• Lower tensile strength
• Challenging bridging and overhangs
• Requires slower print speeds

Best for: Living hinges, seals, gaskets, flexible enclosures, and wearable prototypes

High-Temperature Resistant PP (HT-PP)

Specially formulated to withstand elevated temperatures without deformation.

Advantages

• Extended heat deflection temperature (HDT)
• Maintains integrity under thermal cycling
• Stable in harsh environments
• Suitable for under-hood automotive parts

Limitations

• Requires higher nozzle and bed temperatures
• More sensitive to cooling settings
• Limited availability and higher cost

Best for: Aerospace components, engine bay parts, and applications exposed to heat

Biocompatible Polypropylene

Certified for medical and healthcare applications with compliance to biocompatibility standards.

Advantages

• Meets ISO 10993 or USP Class VI standards
• Resistant to sterilization (autoclave, gamma, chemical)
• Non-toxic and safe for skin contact
• Chemically inert and moisture-resistant

Limitations

• Higher cost due to certification
• Limited color and supplier options
• Requires strict print environment control

Best for: Medical devices, surgical guides, prosthetics, drug delivery systems, and lab equipment

Type	Strength	Flexibility	Heat Resistance	Best Application
Standard PP	Medium	High	Medium	General-purpose functional parts, containers
Carbon Fiber PP	Very High	Low	High	Structural components, tooling, drones
Glass-Filled PP	High	Medium-Low	High	Industrial parts, gears, rigid fixtures
Elastomeric PP	Low-Medium	Very High	Medium	Living hinges, seals, flexible components
HT-PP	High	Medium	Very High	Aerospace, automotive, high-temp environments
Biocompatible PP	Medium	Medium	Medium-High	Medical devices, implants, surgical tools

Expert Tip: For optimal PP filament printing, use a heated bed (70–100°C), enclosed chamber to minimize warping, and PEI or specialized adhesive surfaces for improved bed adhesion. Always dry the filament before use, as PP can absorb moisture over time, affecting print quality.

Key Features and Applications of Polypropylene (PP) Filament

Polypropylene (PP) filament is a versatile thermoplastic polymer widely used in 3D printing, industrial manufacturing, packaging, and medical applications. Known for its excellent balance of mechanical properties, chemical resistance, and lightweight nature, PP filament offers unique advantages over other plastics. Below is a detailed breakdown of its most important features, real-world applications, and practical considerations for optimal use.

Lightweight & Low Density

Polypropylene is one of the lightest thermoplastics available, with a density of approximately 0.90–0.91 g/cm³—lower than water, which allows it to float. This exceptional lightness significantly reduces the overall weight of components, making it ideal for weight-sensitive industries.

In automotive and aerospace engineering, reducing mass improves fuel efficiency and performance. In consumer goods, lighter products enhance portability and reduce shipping costs. The combination of low density and structural integrity makes PP a preferred material for drones, portable electronics enclosures, and lightweight structural parts.

Exceptional Chemical Resistance

PP exhibits outstanding resistance to a broad range of chemicals, including acids, bases, solvents, and organic compounds. It remains stable when exposed to harsh environments, making it highly suitable for chemical storage tanks, laboratory equipment, piping systems, and industrial containers.

This resistance also ensures long-term durability in corrosive settings, such as wastewater treatment plants or chemical processing facilities. Unlike many other plastics, PP does not degrade easily upon contact with cleaning agents or industrial fluids, ensuring safety and longevity in demanding applications.

Flexibility and Impact Toughness

Polypropylene possesses a unique combination of flexibility and impact resistance, allowing it to withstand repeated bending and stress without cracking. This property is especially evident in "living hinge" designs—thin, flexible joints used in flip-top bottles, toolboxes, and reusable containers.

Its high fatigue resistance means PP parts can endure thousands of opening and closing cycles without failure. This makes it a top choice for durable consumer products like snap-fit enclosures, lids, gaskets, and wearable devices that require both resilience and comfort.

Easy Processing and Manufacturing

With a relatively low melting point (around 130–170°C), polypropylene is easy to process using common techniques such as injection molding, extrusion, and fused filament fabrication (FFF) 3D printing. This enables fast production cycles and cost-effective manufacturing.

Manufacturers benefit from shorter cooling times and energy-efficient processing. In additive manufacturing, PP filament allows for rapid prototyping and complex geometries. However, proper bed adhesion (e.g., using heated beds and adhesives) is essential due to its tendency to warp during cooling.

Biocompatibility and Medical Suitability

Polypropylene is non-toxic, hypoallergenic, and biocompatible, meaning it can safely interact with the human body without causing adverse reactions. These qualities make it a trusted material in healthcare for surgical sutures, syringes, IV components, and implantable devices.

It is also autoclavable—capable of withstanding high-temperature sterilization—making it ideal for reusable medical instruments. In 3D printing, biocompatible PP filaments are increasingly used to create patient-specific models, prosthetics, and custom surgical guides.

Moisture and UV Resistance

PP naturally resists moisture absorption, which prevents swelling, warping, or degradation in humid environments. This makes it excellent for outdoor applications, marine components, and food packaging where hygiene and dimensional stability are critical.

While standard PP has limited UV resistance, additives can be incorporated to enhance weatherability for long-term outdoor exposure. UV-stabilized PP is commonly used in garden furniture, automotive trim, and agricultural equipment.

Property	Advantage	Common Applications
Low Density	Lightweight, buoyant in water	Packaging, automotive parts, consumer goods
Chemical Resistance	Durable in corrosive environments	Laboratory ware, chemical tanks, pipes
Flexural Fatigue Resistance	Withstands repeated bending	Living hinges, snap-fit closures, containers
Thermal Processability	Easy to mold and print	Injection-molded parts, 3D printed prototypes
Biocompatibility	Safe for medical use	Surgical tools, implants, lab consumables

Best Practices for Using PP Filament

Use a Heated Bed: Set the bed temperature between 90°C and 110°C to minimize warping and improve adhesion. A glass or PEI build surface works well with proper preparation.

Enclose the Printer: To maintain consistent ambient temperature and reduce thermal stress, use an enclosed 3D printer when working with PP filament.

Apply Adhesives: Use specialized adhesives like PP glue sticks, hairspray, or lacquer-based sprays to enhance first-layer bonding.

Dry Before Printing: Although PP absorbs minimal moisture, storing it in a dry environment or drying it before use ensures optimal print quality.

Post-Processing: PP can be machined, welded, or chemically treated for finishing. However, painting requires surface treatment (e.g., plasma or flame) due to its low surface energy.

Important: While polypropylene offers many benefits, it has lower stiffness and heat deflection temperature compared to materials like ABS or polycarbonate. Always consider the operating environment and mechanical requirements when selecting PP for functional parts. Additionally, ensure proper ventilation during printing, even though PP emits fewer fumes than other thermoplastics.

Commercial Uses of Polypropylene (PP) Filament

Polypropylene (PP) filament is a versatile thermoplastic polymer widely used across multiple industries due to its excellent balance of mechanical properties, chemical resistance, lightweight nature, and cost-efficiency. Its adaptability in processing methods—such as extrusion, injection molding, and 3D printing—makes it ideal for a broad range of commercial applications. Below is a detailed exploration of its key industrial uses and the reasons behind its growing popularity.

Packaging Industry

PP filament is a cornerstone of the modern packaging industry, prized for its durability, flexibility, and resistance to moisture, oils, and most chemicals. It is extensively used in the production of flexible and rigid packaging solutions that protect a wide variety of goods.

• Used in manufacturing woven and non-woven polypropylene bags, including popular "green bags" and FIBC (Flexible Intermediate Bulk Containers)
• Forms transparent films for food packaging, pharmaceutical blister packs, and tamper-evident wraps
• Ideal for thermoformed containers used in ready-to-eat meals, dairy products, and medical packaging
• Recyclable and FDA-compliant grades ensure safety for direct food contact

Key benefit: Lightweight yet strong, reducing shipping costs and environmental impact.

Automotive Components

The automotive sector leverages PP filament for both interior and exterior components due to its high strength-to-weight ratio, impact resistance, and ability to withstand exposure to automotive fluids and temperature fluctuations.

• Commonly used in dashboards, door panels, glove compartments, and HVAC ducts
• Fabricated into battery cases, bumpers, and under-the-hood components for electric and conventional vehicles
• Enables vehicle lightweighting, contributing to improved fuel efficiency and reduced emissions
• Can be reinforced with glass fibers or talc to enhance rigidity and thermal stability

Innovation note: Increasing adoption in electric vehicles (EVs) for modular interior designs and battery enclosures.

Consumer Goods

PP filament’s ease of processing, colorability, and affordability make it a top choice for mass-produced consumer items and custom-designed products.

• Used in kitchenware such as food storage containers, cutting boards, and microwave-safe utensils
• Manufactures durable furniture components, including chairs, shelves, and outdoor seating
• Growing use in 3D printing for personalized home decor, phone cases, and hobbyist prototypes
• Available in various finishes (matte, glossy) and can be easily recycled

Sustainability angle: Many consumer products now use recycled PP to meet eco-conscious market demands.

Medical Applications

Medical-grade polypropylene filament is valued for its biocompatibility, resistance to sterilization methods, and ability to maintain integrity in sterile environments.

• Used in disposable syringes, specimen containers, IV fluid bottles, and pill organizers
• Employed in surgical trays, diagnostic devices, and labware such as centrifuge tubes
• Resists gamma radiation, autoclaving, and ethylene oxide sterilization without degradation
• Non-toxic and hypoallergenic, making it safe for patient-contact applications

Critical advantage: Maintains dimensional stability and clarity after repeated sterilization cycles.

Textiles and Fabrics

In the textile industry, PP filament is processed into fibers for industrial and consumer fabrics, offering exceptional resistance to water, mildew, and UV degradation.

• Woven into durable rugs, carpets, and indoor-outdoor flooring with excellent stain resistance
• Used in geotextiles for erosion control, road construction, and landscaping
• Manufactures outdoor gear such as tents, backpacks, tarps, and marine covers
• Popular in sportswear and activewear due to moisture-wicking and quick-drying properties

Performance edge: Does not absorb water, making it ideal for marine and high-humidity environments.

Electronics Industry

PP filament plays a critical role in electronics due to its excellent dielectric properties, low moisture absorption, and thermal stability.

• Used in film capacitors for power supplies, inverters, and audio equipment due to high insulation resistance
• Forms lightweight, impact-resistant casings for consumer electronics, power tools, and sensors
• Employed in wire and cable insulation for low-signal applications
• Resists electrical arcing and maintains performance across a wide temperature range (-20°C to 100°C)

Technical insight: Polypropylene capacitors offer superior signal clarity and longevity in high-fidelity audio systems.

Industry Insight: The demand for polypropylene filament continues to grow, driven by advancements in recycling technologies, bio-based PP development, and increasing use in additive manufacturing. Businesses that incorporate PP into their product lines benefit from its cost-effectiveness, design flexibility, and alignment with sustainability goals. For manufacturers, selecting the right grade—homopolymer vs. copolymer, virgin vs. recycled—is key to optimizing performance and compliance.

Industry	Primary Applications	Key PP Properties Utilized	Processing Methods
Packaging	Bags, films, containers	Moisture resistance, flexibility, FDA compliance	Extrusion, blow molding, thermoforming
Automotive	Interior trim, bumpers, battery cases	Impact resistance, lightweight, chemical stability	Injection molding, 3D printing
Consumer Goods	Kitchenware, furniture, 3D printed items	Cost-effective, moldable, recyclable	Injection molding, extrusion, FDM printing
Medical	Syringes, labware, surgical tools	Biocompatibility, sterilizability, clarity	Injection molding, extrusion
Textiles	Rugs, geotextiles, outdoor gear	Water resistance, UV stability, durability	Fiber spinning, weaving, tufting
Electronics	Capacitors, casings, insulation	Dielectric strength, low moisture absorption	Film casting, injection molding

Additional Considerations for Commercial Use

• Recyclability: PP is recyclable (Resin ID Code 5), supporting circular economy initiatives in packaging and consumer goods
• 3D Printing Compatibility: Growing use in FDM/FFF 3D printers for prototyping and low-volume production due to low warping and ease of printing
• Chemical Resistance: Resists acids, alkalis, and solvents, making it suitable for chemical storage and industrial applications
• Thermal Performance: Operates effectively in temperatures up to 100°C, with heat-stabilized grades available for higher-temp environments
• Regulatory Compliance: Meets FDA, USP Class VI, and RoHS standards for food, medical, and electronic applications

How to Choose the Right Polypropylene (PP) Filament for Your Project

Selecting the appropriate Polypropylene (PP) filament is essential for achieving optimal performance, durability, and functionality in your 3D printing or manufacturing project. To make an informed decision, three critical factors must be carefully evaluated: the required mechanical properties, the environmental conditions the final product will face, and the processing techniques involved. Understanding how these elements interact ensures you choose a PP filament that meets both technical specifications and real-world demands.

Important Note: Polypropylene is a semi-crystalline thermoplastic known for its excellent chemical resistance, low density, and high fatigue resistance. However, it can be challenging to print due to poor bed adhesion and warping. Always verify compatibility with your equipment and consider using an enclosed chamber and adhesive aids like PEI sheets or specialized glues.

Key Factors in Selecting Polypropylene Filament

• Mechanical Properties and Additives

  Different applications demand different mechanical characteristics. Polypropylene filaments are engineered to meet specific performance criteria such as tensile strength, impact resistance, flexibility, and abrasion resistance. For instance, applications requiring durability under stress—like living hinges or snap-fit enclosures—benefit from homopolymer PP, which offers higher stiffness and strength.

  To enhance performance, manufacturers often incorporate additives into the base resin:

  • Impact modifiers improve toughness, especially at low temperatures
  • Fillers (e.g., glass fibers, talc) increase rigidity, dimensional stability, and heat resistance
  • Plasticizers enhance flexibility for soft-touch components
  • Flame retardants are added for electrical or automotive parts requiring fire safety compliance

  Choosing a filament with the right balance of mechanical properties and additives ensures structural integrity and long-term reliability of your printed part.

• Environmental Conditions

  The operating environment plays a crucial role in filament selection. Standard Polypropylene performs well under indoor, room-temperature conditions but may degrade when exposed to extreme environments. Consider the following scenarios:

  • High Temperatures: While pure PP has a relatively low melting point (~160°C), heat-stabilized or nucleated formulations can withstand higher continuous use temperatures. For applications near engines or in hot climates, consider high-temperature-resistant PP grades.
  • UV Exposure: Prolonged sunlight exposure causes standard PP to become brittle over time. UV-stabilized or carbon-pigmented filaments contain additives that protect against photodegradation, making them ideal for outdoor applications like garden tools, automotive trim, or signage.
  • Humidity and Chemical Exposure: One of PP’s greatest strengths is its resistance to moisture and most acids, bases, and solvents. This makes it perfect for chemical containers, laboratory equipment, or marine components. However, prolonged exposure to strong oxidizing agents should still be avoided.

  Matching the filament’s environmental resistance to your application's conditions prevents premature failure and extends product lifespan.

• Processing Techniques and Printability

  The method of fabrication—especially 3D printing—dictates specific requirements for filament behavior. Polypropylene’s low surface energy and high shrinkage rate make it prone to warping and poor layer adhesion if not processed correctly.

  Key considerations for processing include:

  • Nozzle Temperature: Typically ranges from 200°C to 260°C depending on the formulation
  • Bed Temperature: A heated bed between 80°C and 110°C is essential, often combined with adhesion promoters
  • Enclosure Use: An enclosed print chamber helps maintain consistent temperature and reduces warping
  • Print Speed: Moderate speeds (30–50 mm/s) improve layer bonding and dimensional accuracy
  • Flow Rate & Viscosity: Ensure your printer can handle the filament’s melt flow index (MFI), especially for fine details or high-speed printing

  Injection molding or extrusion processes also require attention to melt temperature, cooling rates, and mold design. Using a PP filament specifically designed for your manufacturing method ensures smooth processing, minimal defects, and superior surface finish.

Selection Factor	Considerations	Recommended Filament Type	Common Applications
Mechanical Strength	High load-bearing, rigidity, impact resistance	Reinforced PP (glass-filled or mineral-filled)	Industrial housings, gears, brackets
Flexibility & Durability	Repeated bending, fatigue resistance	Homopolymer or copolymer PP	Living hinges, snap-fit lids, containers
High-Temperature Exposure	Continuous use above 100°C	Heat-stabilized or nucleated PP	Under-hood automotive parts, hot fluid containers
Outdoor/UV Exposure	Sunlight, weathering, color retention	UV-stabilized or black-pigmented PP	Outdoor furniture, garden tools, signage
Chemical Resistance	Contact with acids, bases, solvents	Standard or specialty-grade PP	Laboratory ware, chemical tanks, piping

Expert Tip: When testing a new PP filament, print a functional prototype first to evaluate warping, adhesion, and mechanical performance under real-world conditions. This allows you to fine-tune printer settings and validate material suitability before full-scale production.

Final Recommendations

• Always consult the manufacturer’s technical data sheet (TDS) for detailed specifications including melt flow, tensile strength, and thermal properties
• Store PP filament in a dry, sealed container with desiccant to prevent moisture absorption, even though PP is less hygroscopic than other plastics
• Label spools clearly with purchase date and storage conditions to track shelf life
• Consider post-processing methods like annealing to relieve internal stresses and improve dimensional stability
• For mission-critical applications, perform accelerated aging tests to simulate long-term performance

By thoughtfully evaluating mechanical requirements, environmental exposure, and processing compatibility, you can confidently select a Polypropylene filament that delivers reliable performance and longevity. Proper material selection not only enhances the functionality of your end product but also reduces waste, lowers maintenance costs, and supports sustainable manufacturing practices.

Frequently Asked Questions About Polypropylene (PP) 3D Printing

Q1: Can PP filament be painted or glued for better finish?

Answer: Polypropylene (PP) filament is notoriously difficult to paint or glue due to its non-stick, low surface energy characteristics. This chemical inertness, while beneficial for durability and resistance, creates challenges when trying to bond coatings or adhesives.

However, there are effective solutions:

• Specialized Primers and Adhesives: Use primers and glues specifically formulated for polyolefins or low-energy plastics (e.g., Loctite Plastics Bonding System or 3M Scotch-Weld DP-8010). These chemically prepare the surface for bonding.
• Surface Activation Techniques:
  • Flame Treatment: Briefly passing a flame over the surface oxidizes it, increasing surface energy and improving adhesion.
  • Chemical Etching: Using chromic acid or proprietary etching solutions can micro-roughen the surface and enhance bonding.
  • Plasma Treatment: Industrial plasma systems can dramatically improve adhesion by modifying the surface at a molecular level.
• Mechanical Abrasion: Light sanding with fine-grit sandpaper (e.g., 200–400 grit) can help, though results are often limited without chemical treatment.

For best results, combine surface treatment with compatible adhesives. Always test on a small area first to avoid damaging the print.

Q2: Which tools or printer setup works best for PP filament?

Answer: Printing with Polypropylene successfully requires a printer setup that addresses its unique thermal and adhesion challenges. The ideal configuration includes the following components:

• Direct Drive Extruder: Highly recommended over Bowden systems. PP’s semi-flexible nature and tendency to compress make it prone to under-extrusion or clogging in long tube setups. A direct drive ensures consistent filament feeding.
• High-Temperature Hot End: Must reliably reach and maintain temperatures between 240–260 °C. All-metal hot ends are preferred over PTFE-lined ones, as PP requires temperatures beyond PTFE’s safe limit (~250 °C).
• Heated Build Plate: Essential for adhesion. Set to 100–110 °C for optimal first-layer bonding. Glass or PEI-coated surfaces work well when properly prepared.
• Enclosed Build Chamber: Critical for minimizing warping and thermal stress. PP is sensitive to rapid cooling. An enclosure helps maintain a stable ambient temperature (ideally 40–60 °C), reducing layer separation and cracking.
• Adhesion Promoters: A thin slurry of water and dish soap, diluted white glue (PVA), or specialized PP adhesion sprays can significantly improve bed stickiness without damaging the print surface.

Printers like the Prusa i3 MK3S+, Creality K1, or Bambu Lab X1C—when configured with these features—have proven effective for PP printing.

Q3: How can a user improve adhesion when printing with PP filament?

Answer: Achieving reliable adhesion with PP filament requires a multi-faceted approach focused on moisture control, thermal stability, and surface preparation:

• Keep Filament Dry: PP is hygroscopic and absorbs moisture from the air, which can cause poor layer adhesion, bubbling, and stringing. Store filament in a dry box with desiccants or use a filament dryer before printing.
• Use a Heated Bed: Set the bed temperature to 100–110 °C. This melts the first layer slightly, allowing it to bond chemically and mechanically with the build surface.
• Employ an Enclosure: Prevent drafts and temperature swings that cause warping. A heated enclosure (40–60 °C) is ideal for large or long prints.
• Optimize Bed Surface: Apply a thin layer of diluted dish soap or white glue to glass or PEI beds. Let it dry to a tacky finish for excellent first-layer grip. Avoid Kapton tape, which PP often fails to adhere to.
• Adjust Print Settings:
  • Use a wider first layer (e.g., 0.3 mm on a 0.4 mm nozzle) for better surface contact.
  • Slow down the first layer speed (10–20 mm/s).
  • Increase initial layer temperature by 5–10 °C.

Combining these strategies dramatically improves print success rates with PP.

Q4: Is Polypropylene 3D printable and durable?

Answer: Yes, Polypropylene (PP) is both highly 3D printable (with the right setup) and exceptionally durable, making it a top choice for functional and industrial applications.

Printability: While more challenging than PLA or ABS, PP can be printed successfully with proper equipment and settings. Its semi-flexible nature, low friction, and chemical resistance require specific printer configurations, but once dialed in, PP offers reliable performance.

Durability Features:

• Chemical Resistance: Resists oils, solvents, acids, and bases—ideal for labware, containers, and automotive parts.
• Flexibility and Impact Resistance: High fatigue resistance allows it to withstand repeated bending (e.g., living hinges), making it perfect for snap-fit enclosures and mechanical components.
• Low Density: Lightweight yet strong, contributing to fuel efficiency in automotive uses and ease of handling in consumer products.
• Moisture and UV Resistance: Performs well in humid environments and, when stabilized, can endure outdoor exposure.
• Thermal Stability: Maintains integrity up to 100 °C, suitable for dishwasher-safe parts and under-hood components.

Common Applications:

Industry	Applications	Why PP Is Ideal
Medical	Syringes, specimen containers, surgical trays	Chemically inert, autoclavable, biocompatible options available
Automotive	Battery cases, interior trim, fluid reservoirs	Lightweight, impact-resistant, resistant to engine fluids
Industrial	Piping components, chemical tanks, living hinges	Durable, corrosion-resistant, fatigue-resistant
Consumer Goods	Food containers, toys, appliance parts	Safe for food contact, dishwasher-safe, flexible

With the right printing conditions, Polypropylene offers an unmatched combination of printability, functionality, and longevity—making it a go-to material for professional and industrial 3D printing.