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Discover Siraya Tech's revolutionary Roamr TPU Air HR 80A filament, a professional-grade structural foaming material engineered specifically for footwear comfort and high-performance cushioning applications. This advanced thermoplastic polyurethane bridges the gap between experimental materials and production-ready shoes, offering controllable hardness from 64A to 80A through temperature adjustments. With 48%-50% high-rebound resilience and 50% weight reduction through active foaming, this material delivers the perfect balance of soft impact absorption and reactive energy return for every mile.
80A TPU Filament with Controllable Hardness Technology
Our Roamr TPU Air HR 80A features innovative temperature-controlled hardness adjustment, allowing you to dial in the perfect firmness for each zone of your print. Create softer cushioning zones for heels and firmer support areas for arches—all in a single print job. This breakthrough technology eliminates the need for multiple filament types while maximizing comfort customization.
Key features include:
- Controllable hardness range: 64A-80A via print temperature
- 230-240°C produces ~80A for firm outsole applications
- 245-250°C yields ~75A for midsole/cushioning zones
- 255-260°C creates ~66A ultra-soft insole comfort
- Single filament replaces multiple hardness grades
Looking for specialized textures? Explore our matte TPU filament collection for a premium non-slip surface finish.
High-Rebound Resilience for Superior Energy Return
Specifically tuned for footwear performance, this material delivers 48%-50% resilience that provides exceptional "bounce" and energy return far exceeding standard flexible filaments. The high-rebound properties ensure responsive cushioning that doesn't flatten over time, maintaining performance through thousands of compression cycles.
Performance advantages:
- 48%-50% rebound resilience for energy return
- Shock absorption that maintains performance over time
- Anti-flattening properties prevent compression set
- Absorbs heel-strike impact effectively
- Responsive feel for athletic applications
Discover our complete range in the TPU filament collection for various hardness options from 64D to 65A.
Ultralight Active Foaming Technology
Achieve up to 50% weight reduction through advanced structural foaming that creates "air-infused" structures feeling weightless without losing structural integrity. This foaming technology produces parts with enhanced shock absorption and a premium fabric-like texture that eliminates the "cheap plastic" feel common in standard 3D printed materials.
Application benefits:
- 50% density reduction for ultralight comfort
- Premium fabric-like surface texture
- Production-ready finish quality
- Enhanced shock absorption through cellular structure
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Ideal for all-day wear applications
For specialized lightweight applications, check out our foaming TPU filament collection that expands during printing for enhanced cushioning.
Professional Footwear Applications with Universal Compatibility
Designed specifically for midsoles, insoles, slides/slippers, and comfort liners, this material delivers production-quality results for functional footwear manufacturing. Extensively verified for both enclosed and open-frame FDM printers, it ensures stable, hassle-free extrusion and repeatable results for every project.
Durability features:
- Optimized for midsole and insole production
- Perfect for slides, slippers, and comfort liners
- Universal compatibility with FDM printer types
- Rock-solid reliability and consistent extrusion
- Excellent layer adhesion despite foaming characteristics
Frequently Asked Questions: 80A TPU Filament
How soft is an 80A TPU?
Shore 80A TPU (at default settings) is moderately soft with rubber-like flexibility, but the Roamr TPU Air HR 80A offers adjustable hardness from 64A to 80A depending on print temperature. At higher temperatures (255-260°C), it produces ultra-soft 66A cushioning, while lower temperatures (230-240°C) yield firmer 80A support. This versatility makes it ideal for footwear requiring varying firmness zones in a single print.
Which is softer, TPU 90A or 85A?
TPU 85A is softer than 90A. On the Shore A hardness scale, lower numbers indicate softer, more flexible materials. 85A offers more cushioning and compression characteristics compared to 90A, which provides greater structural support and firmness. The Roamr TPU Air HR 80A can be adjusted to 75A (softer than both) or even 66A for ultra-soft applications.
What is TPU 64D filament?
TPU 64D filament is a semi-rigid thermoplastic polyurethane measured on the Shore D hardness scale, used for harder materials. Shore 64D is significantly more rigid than Shore A materials like 80A, offering greater structural stability and wear resistance while maintaining controlled flexibility for impact absorption. It's ideal for mechanical parts, gears, and fixtures requiring toughness without excessive flex.
What does 90A TPU mean?
90A TPU refers to thermoplastic polyurethane with a Shore 90A hardness rating, indicating a relatively firm flexible material. This is harder than softer grades like 80A or 85A but still maintains considerable flexibility compared to rigid plastics. 90A TPU provides good structural support while retaining elastic properties, making it suitable for applications requiring durability with moderate flex and wear resistance.