Polypropylene (PP)

Polypropylene (PP) is a semi-crystalline thermoplastic widely recognized for its balance of strength, chemical resistance, and cost efficiency. As one of the most commonly used plastics in the world, PP combines low density with excellent mechanical and thermal properties, making it ideal for both consumer and industrial applications. It is available in several forms—including homopolymer, random copolymer, and block copolymer—each offering unique advantages in rigidity, clarity, or impact resistance.

• Low density – the lightest among commodity plastics, contributing to weight reduction in finished parts
• High thermal resistance – melting range between 160°C and 171°C, allowing good performance at elevated temperatures
• Excellent chemical resistance – inert to many acids, bases, fats, and detergents, though less resistant to strong oxidizers
• High fatigue resistance – ideal for applications such as living hinges that require repeated flexing
• Good processing characteristics – suitable for injection molding, extrusion, blow molding, and film forming
• Versatile grades – available as homopolymer, random copolymer, and block copolymer for tailored mechanical performance
• Low moisture absorption – resists water uptake, suitable for humid and outdoor environments
• Recyclable – commonly identified as Resin ID #5 and widely recycled where facilities are available

• Packaging – bottles, caps, tubs, films, and containers for food, beverages, and consumer goods
• Consumer products – household containers, kitchenware, appliances, ropes, and fibers for textiles
• Living hinges – used in flip-top lids and closures due to outstanding fatigue resistance
• Medical and laboratory products – syringes, vials, and containers that require sterilization and durability
• Automotive components – bumpers, battery cases, dashboards, and interior trims
• Piping and plumbing – corrosion-resistant pipes for potable water and industrial systems
• Fibers and nonwovens – used in diapers, filters, geotextiles, and reinforcement fibers for concrete
• Electrical and electronic uses – dielectric material in film capacitors and insulation applications

• Lightweight – lower density than many other plastics, reducing material usage and shipping costs
• Thermal stability – maintains form and function at higher temperatures than polyethylene
• Cost-effective – among the most economical thermoplastics, offering excellent value for performance
• Chemical durability – resistant to many everyday chemicals, oils, and solvents
• Recyclable – widely reused in manufacturing, supporting circular economy initiatives

• Homopolymer
• Copolymer