Madison Maxey | Loomia Technologies: Why did a $22M military e-textile project reject printed electronics?
00:09:50 - 00:11:45
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Why did a $22M military e-textile project reject printed electronics?
The $22 million SmartyAnts military program highlights a key technological divide in e-textiles: the choice between printed/laminated structures and fiber-based integration. While the printed electronics community excels at scaling and flat, thin layouts, certain extreme use cases demand absolute invisibility, high breathability, and seamless drape. For these ultra-soft garments, printed TPU or laminated films fail to meet comfort requirements, driving the industry toward embroidered and knit-thread solutions.
Conversely, applications with high-density routing and rigid performance parameters are ideal fits for printed technologies. For example, robotic skin applications require dense sensor arrays to mimic human touch. A robotic glove featuring a 131-point pressure matrix relies on modulating trace widths and highly scalable manufacturing—capabilities where printed electronics vastly outperform textile-native embroidery.
This dichotomy proves that there is no one-size-fits-all manufacturing process for electronic textiles. Designers must map their system requirements—such as trace density, breathability, and washability—directly to the appropriate fabrication method, balancing textile-native integration against printed electronic precision.
In this short video, you can learn:
* Why the SmartyAnts military program selected embroidered and knit solutions over laminated electronics.
* How a 131-point pressure matrix glove provides robotic systems with a human-like sense of touch.
* How to align high-density circuit routing needs with the capabilities of printed electronics.
📋 **Clip Abstract** This clip explores the strategic technology selection process in e-textiles by comparing the SmartyAnts program and a robotic pressure-sensing glove. It contrasts the mechanical and electrical trade-offs of fiber-based embroidered circuits against printed and laminated TPU electronics.
#EmbroideredCircuits, #LaminatedTPU, #TactileSensingArrays, #HighDensityRouting, #ElectronicTextiles, #SoftRobotics
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00:02:35 - 00:05:02
Why does stretching an e-textile ruin its electrical performance?
Why does stretching an e-textile ruin its electrical performance?
The fundamental trade-off in electronic textiles lies between physical comfort and electrical performance. As materials are made softer, more flexible, and highly stretchable, their electrical stability degrades. Designers must critically assess whether an application truly requires "stretch" or if "drape" is sufficient, as avoiding unnecessary stretch allows for much more reliable electrical properties and simplified manufacturing processes.
Drape is a quantifiable material property that can be measured using a drape tester to calculate a specific drape coefficient. If an application requires conformability but not dynamic stretching, utilizing woven materials or standard printed electronics on polyester can bypass the mechanical stresses that cause electrical failure. For applications requiring stretch, the critical metric is the change in electrical resistance over percent elongation, as well as the material's hysteresis behavior over repeated cycles.
Ultimately, selecting the right technology pathway—whether it is flex PCBs, laminated TPU films, or knit/woven conductive yarns—depends entirely on these physical requirements. Understanding the boundaries of drape versus stretch prevents over-engineering and keeps product costs within commercially viable limits.
In this short video, you can learn:
* How the drape coefficient is calculated and why it matters for product design.
* Why dynamic stretch introduces severe electrical resistance challenges and hysteresis.
* How to choose between flex PCBs, wovens, and stretchable TPUs based on mechanical needs.
📋 **Clip Abstract** This clip explains the critical engineering trade-offs between mechanical drape, stretchability, and electrical performance in e-textiles. It highlights how to quantify drape and evaluate change in resistance over elongation to select the most reliable substrate technology.
#DrapeCoefficient, #ElectricalHysteresis, #StretchableTPU, #ConductiveYarns, #PrintedElectronics, #WearableElectronics
00:13:20 - 00:15:16
How do you engineer an electric vehicle sunroof that rolls, heats, and lights up?
How do you engineer an electric vehicle sunroof that rolls, heats, and lights up?
Electric vehicles present a unique thermal management challenge because they lack the waste heat of internal combustion engines. To keep passengers comfortable efficiently, automotive designers are turning to localized surface heating. Integrating heating elements and programmable lighting into a roll-up sunroof, however, requires materials that can survive tight-radius bending without mechanical or electrical fatigue.
Traditional flexible PCBs on Kapton lack the necessary drapability and flex life for a roll-up mechanism, risking cracking over repeated cycles. By using thermoplastic polyurethane (TPU) films combined with multi-layer stackups, engineers can integrate both resistive heating traces and programmable LED arrays into a single, cohesive, foldable textile component. This approach maintains a thin, automotive-grade profile while ensuring robust performance.
Achieving thermal efficiency in these systems requires precise control over circuit geometry. Modulating the trace width allows engineers to customize the resistance across the surface, optimizing heat distribution while minimizing power consumption. This multi-layer integration demonstrates how e-textiles can solve complex packaging and thermal challenges in modern EV cabins.
In this short video, you can learn:
* Why the lack of internal combustion engine waste heat in EVs is driving surface-heating innovation.
* How multi-layer TPU stacks enable the co-integration of lighting and heating in folding automotive parts.
* How modulating conductive trace widths optimizes thermal efficiency and power consumption.
📋 **Clip Abstract** This clip details the development of an automotive roll-up sunroof demonstrator featuring co-integrated heating and lighting. It shows how multi-layer TPU laminates overcome the mechanical limitations of flex PCBs in tight-radius, high-cycle environments.
#TPULaminates, #ResistiveHeatingTraces, #ElectronicTextiles, #PrintedElectronics, #EVThermalManagement, #AutomotiveSmartSurfaces