The Ultimate Guide to Plastic Injection Molding Materials

Welcome to UPM, where we transform innovative ideas into tangible successes through our diverse range of plastic materials. This guide is your comprehensive resource for selecting the ideal material for any project, from revolutionary automotive components to cutting-edge medical devices.

Understanding Plastic Materials

Plastic materials are pivotal in modern manufacturing, praised for their:

  • Versatility
  • Cost-effectiveness
  • Durability: They offer lightweight and durable solutions that are perfectly suited for precise, high-quality designs.

Our Premier Plastic Materials

Acrylonitrile Butadiene Styrene (ABS)

ABS is tough and flexible and offers a high degree of resistance to physical impacts and chemical corrosion, making it a preferred choice for rugged use in automotive and consumer electronics. ABS is resistant to most acids, alkalis, hydrocarbons, oils, and fats. It is not resistant to acetone, ether, ethyl benzene, ethyl chloride, and ethylene chloride. ABS has a low water absorption. Its ability to be colored easily adds to its design versatility, enabling aesthetically pleasing finishes that appeal to consumers and manufacturers alike.

  • Applications: Automotive parts, consumer electronics
  • Features: Tough yet flexible, easy to process, aesthetically pleasing

Polycarbonate (PC)

The PC’s unparalleled clarity and impact resistance are ideal for safety and optical applications. Its ability to withstand high temperatures and resist UV light degradation while maintaining transparency is exceptional, catering to sectors requiring durability without compromising visibility, such as in protective eyewear and outdoor fixtures.

  • Applications: Protective gear, optical devices
  • Features: Exceptional strength, clarity, impact resistance

Polyethylene (PE)

PE’s versatility shines across its high-density (HDPE) and low-density (LDPE) variants, offering solutions from hardy, reusable containers to flexible and lightweight films. Its moisture and chemical attack resistance make it indispensable in food packaging, water piping, and corrosion-resistant overlay applications.

  • Applications: Packaging, piping
  • Features: Versatile, moisture-resistant, suitable for rigid and flexible products

High-impact Polystyrene (HIPS)

HIPS offers excellent molding and aesthetic versatility, making it perfect for items that require precision in detail and color. This material’s ease of use in manufacturing processes lends well to producing intricate designs and patterns, essential for cosmetic packaging and graphic arts.

  • Applications: Structural components, decorative items
  • Features: Dimensionally stable, easy to machine and color

Polypropylene (PP)

PP stands out for its fatigue resistance, which is essential for creating moving parts and living hinges, and its ability to resist chemical solvents, bases, and acids. Its applications range from automotive components, where durability under repetitive movement is crucial, to medical containers requiring sterilization.

  • Applications: Automotive components, consumer packaging
  • Features: Chemical resistant, flexible, durable

PVC (Polyvinyl Chloride)

PVC’s formulation can be adjusted to enhance its flexibility or rigidity, catering to a wide spectrum of applications, including flexible tubing, window frames, and credit cards. Its electrical insulation properties make it valuable for wiring and cable applications, while its resistance to environmental stress cracking benefits outdoor applications.

  • Applications: Plumbing, construction, medical devices
  • Features: Versatile, excellent environmental resistance


Nylon is renowned for its wear resistance and tensile strength, making it ideal for heavy-duty gear and bearing applications. Its low friction coefficient and ability to absorb impact without compromising its integrity are valuable in automotive and aerospace industries for components like engine covers and fuel tanks.

  • Applications: Wear-resistant parts, textiles
  • Features: Strong, elastic, durable against chemicals and abrasion


Acrylic’s optical clarity and resistance to UV degradation and weathering make it an excellent choice for outdoor applications where clear visibility and durability are required. Its ease of fabrication and ability to be polished to a high gloss are advantageous for architectural features, retail displays, and signage that demand high aesthetic value.

  • Applications: Signage, displays, light fixtures
  • Features: Clear, UV resistant, strong

Specialized Materials: Polyetherimide (PEI) & More

Materials like PEI are indispensable for engineering applications that demand materials with exceptional heat resistance, strength, and dimensional stability. These high-performance polymers are critical in aerospace, automotive, and electrical industries for components that must withstand extreme conditions without deforming.

Making the Right Choice

Selecting the ideal plastic involves considering several factors, including:

  • Strength
  • Flexibility
  • Thermal resistance
  • Aesthetics

Selecting the appropriate plastic material involves a detailed analysis of your project’s requirements—considering mechanical properties, environmental conditions, and aesthetic demands. Our team at UPM is dedicated to guiding you through this selection process, ensuring your product not only meets but surpasses industry standards.

Partner with UPM

Our unwavering commitment to quality and innovation positions UPM as your go-to partner for all your plastic injection molding needs. From material selection to final product design, we stand ready to assist you at every step. Reach out to us today to discover how we can help elevate your project to the next level.

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