Natural Flax Fibers for Pultrusion Applications

Eco-Friendly Yarn, Tow and Sliver for Composite Manufacturing

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Hemptique supplies natural flax materials engineered for pultrusion and composite production. These include single-ply linen yarns, tow fibers and high-grade slivers suited for lightweight, durable reinforcement in a range of composite profiles. Manufacturers aiming to reduce weight, improve sustainability or replace synthetic reinforcements can rely on our consistent quality and scalable supply. All products listed below are compatible with standard pultrusion processes.

Flax-Based Pultrusion Materials Available from Hemptique

Flax Tow Fiber for Pultrusion and Composite Applications

This high-quality flax tow fiber is ideal for use as a natural reinforcement material in pultrusion lines. The long, continuous fibers are well-suited for alignment, resin impregnation and uniform curing - key requirements in composite profile manufacturing. With excellent strength-to-weight ratio and low environmental impact, flax tow offers a sustainable alternative to traditional synthetic fibers. Compatible with polyester, vinyl ester and epoxy resins.

SKU: FLAXSTRICK-200G and FLAXSTRICK-500G
Long-fiber flax tow, processed for industrial applications
Clean, consistent fiber quality
Suitable for thermoset pultrusion systems
Available in bulk supply
Size Options: 200g (7.0 oz) and 500g (17 oz)

Flax Sliver for Natural Fiber Composite Profiles

Designed for consistent fiber alignment and uniform wet-out, this high-grade flax sliver is an excellent choice for bio-based reinforcement in pultrusion manufacturing. Its refined, parallel fiber structure supports stable processing through resin baths and heated dies. Ideal for applications requiring medium to low density reinforcement without compromising strength or sustainability targets.

SKU: FLAXSLIVER-80G
Fine, parallel flax fibers ideal for resin saturation
Uniform structure supports smooth feed in pultrusion dies
Excellent for hybrid or natural fiber composites
Clean finish with minimal processing residue
Size: 80g (2.8 oz)

Single-Ply Flax Yarn for Lightweight Composite Reinforcement

This single-ply linen yarn is manufactured for precision and consistency, and it is suitable for pultrusion applications that require fine, continuous reinforcement. Its smooth texture, stable twist, and availability in different thicknesses (Nm values) allow for flexibility in profile design - especially where weight, natural fiber content and visual texture matter.

Continuous yarn for direct feed into pultrusion setups
Compatible with polyester, epoxy, and vinyl ester resins
Ideal for lightweight or decorative composite profiles
Available in multiple Nm thickness options (Nm 2.5, Nm 6, Nm 9.5)
Size: 100g (3.5 oz) cone
SKU: LINENYARN-NM* (varies by Nm value)

Note: Please select Nm thickness when ordering. Available options: Nm 2.5 (thicker), Nm 6 (medium), Nm 9.5 (lighter).

Flax Fiber: A Smarter Choice for Pultrusion

Flax has been used in textiles and industrial materials for centuries. Today, it plays a growing role in composite manufacturing as companies move toward cleaner, more responsible material sourcing. We provide a range of flax-based products developed for use in pultrusion and other fiber-reinforced applications. These materials combine natural strength with low density and process reliability, making them a smart fit for industries seeking performance without synthetic inputs.

Advantages of Flax-Based Pultrusion Materials

Natural Fiber Source - Grown from renewable flax crops with minimal inputs. Free from synthetic additives and naturally biodegradable.
Engineered for Consistency - Single-ply construction and refined fiber alignment support smooth, uninterrupted feeding through pultrusion equipment.
High Tensile Strength at Low Weight - Helps reduce overall material weight while maintaining mechanical stability in the final profile.
Optimized for Resin Compatibility - Performs well with polyester, vinyl ester and epoxy resins. Absorbs resin effectively for strong fiber-matrix bonding.
Supports Sustainable Manufacturing - Offers a low-carbon alternative to synthetic reinforcements without compromising structural performance.
Natural Aesthetic & Texture (Optional) - Ideal for visible or semi-structural components where a natural look is desired alongside performance.

Common Applications of Flax in Pultrusion

Flax-based reinforcement materials are used in a wide range of pultruded composite products. They add strength, reduce weight and support a more sustainable manufacturing approach. Typical use cases include:

Structural Profiles: Window frames, architectural trim and light framing systems requiring low-density reinforcement.
Furniture Components: Reinforced chair backs, armrests and support bars that benefit from natural fiber texture and strength.
Sporting Goods: Paddle handles, lightweight beams, or protective gear inserts made with flax-reinforced composite.
Decorative Profiles: Visible or semi-structural components where natural fiber texture adds to product design.
Eco-Friendly Panels: Panels for interior design, exhibition structures or green building applications.

Flax vs. Synthetic Fibers: A Practical Comparison for Pultrusion

Manufacturers traditionally use synthetic fibers like glass or carbon in pultrusion due to their strength and availability. However, as industries shift toward more sustainable materials, flax has become a serious alternative - especially for lightweight profiles, hybrid structures and non-critical load-bearing applications.

Structural Profiles: Window frames, architectural trim and light framing systems requiring low-density reinforcement.
Furniture Components: Reinforced chair backs, armrests and support bars that benefit from natural fiber texture and strength.
Sporting Goods: Paddle handles, lightweight beams, or protective gear inserts made with flax-reinforced composite.
Decorative Profiles: Visible or semi-structural components where natural fiber texture adds to product design.
Eco-Friendly Panels: Panels for interior design, exhibition structures or green building applications.

Advantages of Flax Over Synthetic Fibers:

Lower Environmental Impact - Flax is renewable, requires less energy to produce, and is naturally biodegradable. In contrast, glass and carbon fibers rely on resource-heavy processing and do not break down in the environment.
Lighter Material Weight - Flax fibers offer good mechanical performance at a significantly lower density, which helps reduce the overall weight of pultruded parts.
Health & Safety Benefits - Natural flax fibers are less abrasive and pose fewer inhalation risks during handling, unlike glass fibers which can cause skin and respiratory irritation.
Cost Efficiency in Certain Applications - While not suitable for high-load structural parts, flax can replace synthetics in panels, trim and other medium-strength components at a lower material and disposal cost.
Natural Look & Texture - Flax retains a subtle, organic texture that works well in decorative or visible composite profiles, adding design value without secondary finishing.

Feature	Flax Fiber	Synthetic Fibers (Glass / Carbon)
Source	Natural, renewable crop-based	Petrochemical-based, non-renewable
Weight	Low density, reduces part weight	Higher density, increases part weight
Environmental Impact	Biodegradable, low energy production	High carbon footprint, not biodegradable
Handling Safety	Safe to handle, no skin or lung irritation	Can irritate skin and lungs
Surface Appearance	Natural texture, organic finish	Smooth, synthetic look
Ideal Use	Lightweight, eco-conscious composites	High-stress, structural applications

Ready to Explore Flax for Your Pultrusion Line?

If you're looking for sustainable reinforcement materials backed by consistent quality and reliable supply, contact our team to request product data sheets, discuss pricing or arrange bulk orders. We’re here to support your next project - from early-stage material trials to full-scale production.

Email us:sales@hemptique.com
Warehouse location: Vista, California – Bulk inventory available
Technical info & samples: Available on request

Frequently Asked Questions

Is flax strong enough for use in pultruded composites?

While flax is not as strong as carbon or glass fiber, it offers excellent tensile properties for medium-strength applications. It is suitable for structural trim, panels, furniture components and other products where extreme load resistance is not required.

What types of resin systems work with flax reinforcement?

Flax performs well with common thermoset resins used in pultrusion, including polyester, vinyl ester, and epoxy. Its natural surface allows for good resin penetration and bonding.

Can these flax products run on standard pultrusion equipment?

Yes, our flax yarns, tow and slivers are compatible with conventional pultrusion setups. Single-ply yarn and aligned slivers feed smoothly into tensioning and resin impregnation systems without additional prep.

How should flax materials be stored before use?

Store in a cool, dry environment away from direct sunlight. Flax can absorb moisture, so sealed packaging or climate-controlled storage helps maintain material integrity and process stability.

What Nm sizes do you offer for yarn, and how do they differ?

We currently offer Nm 2.5 (thicker, 2.5 meters per gram), Nm 6 (medium, 6 meters per gram), and Nm 9.5 (lighter, 9.5 meters per gram) single-ply yarns. The higher the Nm number, the finer the yarn, each designed for different profile dimensions and resin ratios.

Can flax be blended with synthetic fibers in hybrid composite profiles?

Yes, many manufacturers combine flax with glass or carbon fibers to create hybrid profiles that balance sustainability, cost and performance. Flax helps reduce weight and environmental impact while still maintaining core strength from synthetic reinforcements.

How consistent is fiber quality across batches?

We source and process our flax materials to meet tight standards for industrial use. Tow, sliver and yarn undergo visual and mechanical inspections to ensure consistent alignment, density and moisture levels. Custom spec sheets are available upon request.

Do you provide technical data sheets or testing certificates?

Yes. Technical data (e.g., fiber density, tensile strength range, moisture content) is available for most products. We can also share samples and support material testing upon request.

Is volume pricing or supply contracting available?

Yes. For large-scale buyers, we offer bulk pricing, long-term supply agreements and flexible delivery schedules from our California warehouse. Contact us directly to discuss volume terms.