Prepregs
High Performance Solutions
For Advanced Composite Manufacturing
Gurit prepregs set the benchmark for precision, performance, and versatility in composite materials. With over 30 years of expertise in prepreg technology and production, we empower manufacturers across the globe to produce lighter, stronger, and more efficient composite structures.
As part of our new multi-market approach, Gurit prepregs are now not only shaping the marine and wind energy sectors — but are also driving innovation in the medical, defense, and many other industries.
What are Prepregs?
Pre-impregnated materials, or prepregs, are reinforcement fibers or fabrics pre-impregnated with a carefully formulated, pre-catalysed resin system.
Produced with hot-melt technology and stringent quality control, Gurit prepregs ensure:
Consistent and higher fiber content
Outstanding laminate quality and mechanical performance
Minimal void content and excellent surface finish
Our resin systems are designed for processing flexibility — offering long out-lives for large builds and rapid curing for high-volume manufacturing.
SPRINT Technology
SPRINT materials represent a step-change in processing efficiency and laminate quality. By combining one or two layers of dry fibre reinforcement with a pre-cast, pre-catalysed resin film, SPRINT technology enables easy handling and lay-up in the mould. The unique construction ensures that fibres remain dry and un-impregnated until the curing stage.
When vacuum is applied, air is efficiently removed from fibre bundles and between layers, thanks to the open structure of the dry reinforcement. Upon heating, the resin film softens and infuses the laminate, resulting in exceptionally low void content (typically 0–0.5%) and a superior surface finish.
Gurit’s SPRINT systems are designed to minimise debulking between layers, drastically reducing build times while maintaining outstanding mechanical properties and consistency.
Prepreg & SPRINT Ranges
A range of surface and adhesive films are available for our prepregs – please refer to the data sheets for specific information.
SE75 Range
New-gen hot melt, epoxy system that builds on heritage and performance of SE84, with greater versatility.
Cures from 70°C–120°C with excellent out-life and mechanical performance; most suited to vacuum bag process.
Low toxicity formulation and no CMR components.
Certifications:
DNV / Lloyds approved
Applications:
Race boats and superyachts, wind, industrial components, transportation and military
SE84 Range
With a legacy over 30 years, SE84 is regarded as the benchmark in the performance marine market.
With a cure as low as 80°C and a long out-life, this proven hot-melt epoxy prepreg has outstanding mechanical properties and handling characteristics, and is suited to vacuum bag and autoclave processing.
ST94 is a toughened SPRINT version of this highly regarded and proven system with optimized drape and handling for complex or vertical moldings.
Low toxicity formulation and no CMR components.
Applications:
Marine structures, large race yachts and cruising vessels, as well as industrial applications
SE90 Range
Industrial prepreg and SPRINT™ system engineered for large composite structures with heavy-weight reinforcements (up to 1800 gsm).
Fast cure (45 min @ 120°C) with low exotherm characteristic; most suited to vacuum bag process.
Certifications:
DNV / Lloyds approved
Applications:
Wind blades, marine structures, transportation, civil and defense components
SE135T-1 Range
High-temperature, toughened epoxy prepreg with a Tg up to 180°C.
Flexible cure cycles from 85°C to 175°C, suitable for autoclave or vacuum bag or pressure bladder processing.
Applications:
Aerospace, defense, automotive, and industrial sectors where durability and thermal stability are key
SE140 Range
Fast-cycle, high surface-quality system for autoclave and compression moulding applications.
Cures in as little as 5–10 minutes @ 135°C with HiHo (Hot-in Hot-out) capability.
Delivers excellent cosmetic finishes for structural and aesthetic components.
Applications:
Automotive, motorsport, medical, agricultural, and military projects
SE200 Range
Ultra-fast curing, high-temperature prepreg for press compression moulding.
Achieves full cure in 5 minutes @ 150°C with HiHi capability; it has a Tg ≈ 175°C.
Ideal for high-volume production with a high thermal performance is required.
Applications:
Automotive, defense, space, and other advanced industrial sectors
SE135FR Range
Non-halogenated, fire-retardant epoxy system meeting EN 45545 HL2 and IMO requirements for many components.
Available in both prepreg and SPRINT formats for rail and commercial marine applications.
Delivers high mechanical strength, excellent fatigue performance and low smoke emission without compromising processability.
Applications:
Rail exteriors and interiors, offshore structures, large marine structures, civil engineering panels
Expanding
Applications
Gurit prepregs now power innovation in an expanding range of sectors:
Marine: From race yachts to superyacht structures and radomes
Wind Energy: Large-scale blades and lightweight components
Medical: High-precision prosthetics, diagnostic equipment, and composite implants
Defense: Impact-resistant, lightweight, high-temperature structural components
Space: Ultra-light, high-stiffness composites engineered for extreme environments
Our material systems are engineered to balance cost efficiency, sustainability, and high performance, meeting the most demanding processing and certification standards globally.
Case Studies
Neo 570C Cruiser Racer
Working with longtime partner and Gurit distributor Resintex, the NEO team selected a full complement of Gurit products to achieve the weight savings needed, opting for a full prepreg carbon fiber hull, deck, structure and interior.
Rondal Superyacht Components
Rondal is a pioneer in the prepreg construction of tall carbon spars and large special parts and has been using Gurit products for over 20 years.
Fridgewize Fan Blades
Fridgewize chose prepregs to replace the previous aluminum and plastic blades, which led to optimization, lower weight and mitigating the risks of deformation causing imbalances.
Sustainability and Efficiency
Across all ranges, Gurit is advancing packaging efficiency and carbon reduction:
- Reduced-volume packaging for lower freight emissions
- Reusable stillage systems
- Low-toxicity resin formulations with no CMR components
Every innovation helps our customers minimize waste and environmental impact without compromizing material performance.
Why choose Gurit?
30+ years of composite innovation
Proven expertise in engineering, kitting, tooling, and materials development
Global technical support for process optimization
Certified quality and compliance across multiple markets
Downloads
Gurit Product Catalogue
LINK
Materials Processing Guides
Get in touch with us to learn more about Gurit and how our solutions can work for you.
© Gurit Services AG, Zurich (CH)
