Additive manufacturing for high-performance composite materials: The case for laser-assisted tape winding
Additive manufacturing has fundamentally changed the way engineers think about production. Instead of milling excess material from a blank, only what the component actually needs is built up – layer by layer, exactly where it is needed. The result: less material waste, lower energy consumption, shorter lead times, and geometries that are hardly or not realizable subtractively.
Most engineers associate additive manufacturing with polymer 3D printing — FDM, SLA, or similar desktop-scale processes. But additive manufacturing extends far beyond that. For structural, load-bearing components in aerospace, automotive, and industrial applications, a different class of additive process is emerging as the technology of choice: Laser-Assisted Tape Winding (LATW) a.k.a laser-AFP.
What is laser-AFP – and why is it an additive manufacturing process?
Laser-AFP is a continuous fibre-reinforced thermoplastic (CFR TP) manufacturing process in which unidirectional (UD) tape — consisting of endless fibres (carbon, glass, or aramid) pre-impregnated in a thermoplastic matrix such as PEEK, PA12, or PPS — is wound onto a mandrel and consolidated in-situ using a laser heat source.
The additive principle is identical to any other AM process: Material is only deposited where the design requires it – layer by layer, at a defined fiber angle. Each layer is fused with the previous one under the laser spot, without the need for an autoclave or a post-curing in the oven. After the winding process is completed, the component is structurally consolidated and can be demolded.
This is not 3D printing in the consumer sense. LATW operates with industrial throughput rates and achieves fiber volume contents and mechanical properties that directly compete with thermoset autoclave laminates – and often exceed them.
The additive advantage: Material only where it is needed
Conventional subtractive manufacturing starts with a material block and removes what is not needed. For metal tubes and profiles, this means high buy-to-fly ratios and significant machining costs. In thermosetting composite materials, it often leads to conservatively designed laminates and non-recyclable waste.
LATW completely reverses this logic:
- Fiber angles are programmed layer by layer – the laminate is optimized for the actual load case, not for a conservative approximation.
- Wall thicknesses are only built up where the structural analysis requires it – unnecessary mass is eliminated.
- Cutting rates are significantly lower than in subtractive or wet winding processes, as UD tape is laid down with minimal waste.
- No autoclave required – one of the most energy- and capital-intensive steps of traditional composite manufacturing is completely eliminated.
For engineers focused on lightweight construction, this approach supports both performance goals and sustainability targets directly. The global market for thermoplastic composites in aerospace reflects this dynamic: With a market value of around 602 million USD in 2025 it is expected to grow to 1.78 billion USD by 2032 – with a compound annual growth rate (CAGR) of 16.8%, driven by the increasing demand for autoclave-free, recyclable structural solutions.
From design to component: A digitally integrated process
One of the most underappreciated aspects of LATW is how tightly it integrates with digital engineering workflows. At Alformet, the process begins with a structural design brief — geometry, load case, fibre/matrix material selection — which can be processed through a design and simulation tool to generate an optimised laminate lay-up. From that lay-up, a CNC or robot winding programme is automatically generated and transferred to the LATW machine.
This digital thread — from load case to code — means that design changes can be implemented rapidly, prototype iterations are fast, and the transition from prototype to series production requires no change of equipment or process. The same machine, the same process parameters, the same material system. That continuity is rare in composites manufacturing and represents a genuine industrialisation advantage.
Direct response: Laser-Assisted Tape Winding (LATW) is an additive manufacturing process for continuous fiber-reinforced thermoplastic composite pipes and profiles. UD tape is laid down layer by layer using a laser and consolidated – without autoclave. The process allows for layer-wise fiber angle optimization, low scrap rates, and a direct digital connection from design to production – ideal for prototypes as well as for series production of structural composite components.
Total Cost of Ownership: A look beyond the unit price
A common objection to CFR thermoplastic composites is unit cost. UD tape is more expensive per kilogram than steel or aluminium, and LATW equipment represents a significant capital investment. Evaluated in isolation, the per-part material cost can appear unfavourable.
The picture changes significantly when the Total Cost of Ownership (TCO) is taken into account:
- Mass reduction leads directly to power or energy savings over the lifespan of the component – particularly relevant for rotating parts (drive shafts, rotor bushings) and aerospace structures.
- Maintenance intervals for thermoplastic composite components are generally longer than for metallic alternatives – due to corrosion resistance and fatigue behavior.
- Recyclability of thermoplastic matrices (in contrast to thermosets) reduces disposal costs at the end of life and supports compliance with circular economy and ESG requirements.
- No autoclave means no associated tooling, consumable, or energy costs – and no scheduling bottleneck due to autoclave occupancy.
When these downstream savings are included in the cost comparison, CFR thermoplastic tubes and profiles have demonstrated clear advantages over metallic alternatives across multiple application areas — including automotive driveshafts, industrial rotor sleeves, and aerospace structural members.
Conclusion
Additive manufacturing is not a single technology — it is a design and production philosophy. LATW applies that philosophy at the highest level of structural performance, combining the material efficiency of additive deposition with the mechanical properties of continuous fibre-reinforced thermoplastics.
For engineers evaluating lightweight structural solutions, the question is no longer whether thermoplastic composites can deliver the required performance. The question is how quickly a manufacturing partner can move from design intent to qualified, production-ready parts.
If you are working on a structural tube or profile application and want to understand what LATW could deliver for your specific load case and geometry, get in touch with Alformet — or explore our process and material capabilities in more detail.