Introduction
Micah Chaban, Founder and VP of Sales at RapidMade, has built a career around advancing manufacturing technologies. His company specializes in thermoforming, 3D printing, and machining, providing custom solutions for aerospace, automotive, medical, and industrial applications. With extensive knowledge of materials, production efficiency, and performance requirements, Micah helps businesses select the right plastics to optimize durability, cost, and functionality.
In this conversation, Micah breaks down the importance of material selection in thermoforming, explains how different plastics perform in real-world applications, and offers insight into future trends in plastic manufacturing.
Why is material selection so important in thermoforming?
The material dictates everything about a product’s durability, weight, flexibility, and cost. If you choose the wrong material, you could end up with a part that cracks under stress, melts in high heat, or degrades in harsh environments. That’s why selecting the right plastic is just as important as the design and the manufacturing process itself.
Thermoforming is a versatile and efficient process, but it requires careful material selection because you’re heating and molding plastic sheets. Some materials respond well to that, while others might warp, become brittle, or lose their impact resistance. We help customers choose the right balance of strength, heat tolerance, chemical resistance, and flexibility based on their specific application.
What are the most commonly used plastics in thermoforming, and how do they compare?
It really depends on the application. We typically categorize thermoforming materials into standard thermoplastics—widely used for their affordability and ease of forming—and high-performance thermoplastics, which offer specialized properties like fire resistance, extreme strength, or chemical stability.
High-Impact Polystyrene, or HIPS, is a go-to for low-cost, lightweight applications like packaging trays and disposable containers. It’s easy to form and works well for short-term use, but it lacks the durability needed for industrial or structural applications.
ABS is a step up in terms of impact resistance and toughness. It’s commonly used in automotive panels, medical enclosures, and industrial housings because it holds up well under stress and is resistant to many chemicals. It’s also easy to paint, making it a great option for aesthetic components.
PETG offers optical clarity and strong impact resistance. It’s FDA-approved for food and medical applications, so it’s widely used in face shields, medical packaging, and protective covers. Unlike acrylic, it doesn’t shatter easily, making it more durable in high-impact environments.
For outdoor or moisture-heavy environments, HDPE is unbeatable. It resists UV rays, chemicals, and extreme weather, which is why it’s used for marine equipment, storage containers, and industrial tanks.
Polypropylene, or PP, is another common choice because it’s lightweight, flexible, and highly fatigue-resistant. It works well in automotive components, chemical-resistant parts, and living hinges, where repeated bending is required without the risk of cracking.
What about high-performance thermoplastics? What advantages do they offer?
High-performance thermoplastics are where things get really interesting. These materials are designed for extreme durability, high temperatures, or specialized applications where standard plastics just won’t hold up.
Polycarbonate is one of the strongest plastics we work with. It’s used in safety visors, machine guards, and aerospace components because it’s 250 times stronger than glass while remaining lightweight. It’s highly impact-resistant and maintains its strength at high temperatures, making it ideal for safety applications.
Kydex is another standout material. It’s an ABS/PVC blend that’s flame-retardant, chemical-resistant, and highly durable. It’s commonly used in aircraft interiors, medical device enclosures, and firearm holsters—anywhere that needs fire safety and impact resistance.
For chemical storage tanks, piping, and protective housings, PVC is the go-to. It has strong chemical resistance, natural flame retardancy, and a low cost, making it a smart choice for industrial applications.
For maximum strength with minimal weight, we have Aerolite Thermoformable Carbon Fiber. This material is seven times stronger than standard plastics and is used in aerospace, automotive, and high-performance sports equipment. It offers an exceptional strength-to-weight ratio and heat resistance up to 200°C, making it perfect for extreme conditions.
How should companies approach selecting the right thermoforming material for their products?
The biggest mistake companies make is focusing only on cost without considering performance and long-term durability. A cheaper material might save money upfront, but if it fails under stress, warps in heat, or breaks down over time, you’ll end up spending more on replacements and redesigns.
We always start by asking about the intended use of the product. Will it be exposed to high temperatures? Does it need to withstand chemicals or moisture? Will it be under constant mechanical stress? By understanding these factors, we can recommend the right plastic that balances performance and cost-efficiency.
What trends are shaping the future of thermoforming materials?
We’re seeing a lot of innovation in recycled and sustainable thermoplastics. Companies are looking for ways to reduce waste while maintaining high performance, so there’s growing interest in bio-based plastics and post-consumer recycled materials.
Another big shift is hybrid materials that combine the benefits of multiple plastics. Carbon-filled and fiber-reinforced thermoplastics are becoming more common in aerospace and automotive to create parts that are both lightweight and incredibly strong.
There’s also increasing demand for fire-retardant and chemical-resistant plastics, especially in medical, aerospace, and industrial applications where safety regulations are strict.
The future of thermoforming materials is about smarter, stronger, and more sustainable solutions.
How can businesses get expert guidance on thermoforming materials?
Material selection can be overwhelming, and using the wrong plastic can lead to delays, failures, and added costs. That’s why we work closely with customers to analyze their needs and recommend the best materials for performance, durability, and cost-effectiveness.
At RapidMade, we specialize in custom thermoforming solutions for aerospace, medical, industrial, and consumer applications. Whether you need moisture-resistant outdoor components, fire-retardant enclosures, or ultra-lightweight carbon fiber parts, we have the expertise to guide you.
For expert consultation and custom manufacturing solutions for thermoforming, visit rapidmade.com or contact us at [email protected].