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FlexOne Flexible Resin is a high-performance UV-curable flexible resin launched under eSUN's iSUN3D business line. Leveraging vat photopolymerization technology, it achieves material isotropy, perfectly reproduces complex shock-absorbing lattice structures, and delivers outstanding mechanical resilience and tear resistance — purpose-built for functional elastic parts such as 3D printed shoe midsoles, custom insoles and sports protective gear.
Unlike traditional FDM flexible printing, which suffers from weak Z-axis interlayer bonding, FlexOne relies on vat photopolymerization to fundamentally eliminate interlayer anisotropy, enabling the elastomer to exhibit consistent mechanical performance in all directions. Paired with a high-resolution light engine, it can form complex soft-hard gradient lattice structures in a single print, providing a brand-new solution for the digital manufacturing of functional elastic parts.
Leverages vat photopolymerization to eliminate the weak Z-axis interlayer bonding bottleneck, enabling consistent mechanical performance in all directions.
Paired with a high-resolution light engine, it can perfectly print ultra-fine shock-absorbing lattice structures, achieving integrated soft-hard gradient forming.
Excellent elongation at break and energy return, withstanding tens of thousands of dynamic compressions without permanent deformation.
Designed specifically for 3D printed shoe midsoles, custom insoles and sports protective gear — ready to use out of the box.
FlexOne leverages vat photopolymerization to achieve isotropy and can perfectly reproduce complex shock-absorbing lattices.
FlexOne resin forms a high-barrier, high-repurchase moat within the resin matrix, building a sustainable profit loop for the iSUN3D business line.
Provides a cost-effective open-material alternative for B-end contract manufacturers and distributors unwilling to be locked into giants' closed ecosystems, breaking down closed-ecosystem barriers.
FlexOne was born from pain points discovered in the digital rehabilitation healthcare sector — particularly custom insoles and orthotics. Real-world challenges identified through customer research ultimately gave rise to this flexible-elastic manufacturing solution deeply integrated with printing equipment.
Excellent elongation at break and energy return, withstanding tens of thousands of dynamic compressions without permanent deformation.
Paired with a high-resolution light engine, it can perfectly print ultra-fine shock-absorbing lattices, achieving high-fidelity reproduction of complex structures.
Within the iSUN3D system, material parameters and hardware are highly tuned — ready to use out of the box, without repeated calibration.
| Feature | Description | Impact |
|---|---|---|
| Extremely high fluid viscosity | Flexible resin is very viscous at room temperature | Without a printer equipped with resin tank heating, forming yield drops sharply |
| Demanding post-processing | Incomplete cleaning or improper secondary curing | Surface remains persistently tacky, affecting finished quality and user experience |
| Strict bulk storage and shelf-life management | Bulk export orders must account for the degradation of viscosity and curing activity caused by high temperatures during sea freight | Increases storage and logistics management complexity, requiring strict control of transport and storage environments |
| Industry | Typical Applications | Material Value |
|---|---|---|
| Footwear & Rehabilitation Aids (Core Base) | 3D printed sports shoe midsoles, one-piece molded slippers, custom insoles. | Elastic lattice structures enable precise force support across different regions of the foot, with integrated soft-hard gradient forming. |
| Sports Protection & Wearable Devices | High-end bicycle custom saddles, ski/rugby helmet integrated shock-absorbing cushioning layers, smartwatch flexible straps. | Provides custom shock absorption and wearing comfort for protective gear, balancing resilience and tear resistance. |
| Industrial Sealing & Damping Components | Small-batch custom waterproof gaskets, sealing rings, industrial machinery vibration dampers, robotic soft grippers. | Elastic resilience and tear resistance meet sealing and damping functional requirements, suitable for small-batch flexible manufacturing. |
FlexOne flexible resin is used to print sports shoe midsoles, using shock-absorbing lattice structures to achieve precise force support and energy return across different regions of the foot.
3D printed elastic lattice home cushions, balancing resilient comfort and breathability, providing personalized support for sitting and leaning postures.
Provides soft grippers and cushioning components for humanoid robots, with elastic resilience and tear resistance meeting dynamic interaction and grasping requirements.