Axial reinforcement
Continuous roving carries the primary lengthwise load.
FRP pultrusion continuously pulls aligned glass, carbon or basalt reinforcement through resin impregnation, a forming zone and a heated die. It is the preferred production route for repeatable constant-cross-section profiles where longitudinal properties, dimensions and surface finish must remain stable over long runs.
The puller creates continuous motion while the die consolidates the reinforcement, defines the cross-section and supplies the heat needed to cure a thermoset matrix. Profile performance depends on the complete laminate architecture, not roving alone.
Rovings, mats, stitched fabrics and veils are tensioned and positioned in the approved architecture.
Reinforcement is wet out in an open bath or controlled resin-injection chamber.
Guides progressively shape the wet reinforcement before it enters the die.
The die consolidates, shapes and cures the profile while it advances.
Grippers pull the cured profile, then saws and CNC stations finish it to drawing.
Continuous roving carries the primary lengthwise load.
Mats or fabrics support splitting resistance, fasteners and off-axis loads.
Polyester, vinyl ester, epoxy or polyurethane selected for cure, exposure and performance.
Veil, pigment, UV package, coating or machining treatment matched to service.
A supplier claim is useful only when the process window is tied to the offered material, tooling, drawing revision and production batch.
| Stage | What must be controlled | Evidence to request |
|---|---|---|
| Incoming materials | Resin, reinforcement, fillers and additives tied to approved grades and lots. | CoA, lot traceability and controlled bill of materials. |
| Line setup | Die-zone temperatures, pull speed, pull force and reinforcement positions. | Setup sheet and time-stamped line record. |
| Profile release | Dimensions, straightness, twist, cure and appearance. | Dimensional report, cure check and approved limit sample. |
| Qualification | Properties tested in the specified orientation and conditioning state. | Current report linked to production laminate and specimen direction. |
Likely cause: Poor wet-out, excessive pull stress or machining damage.
Detection: Cut-section review, microscopy where needed and directional mechanical tests.
Likely cause: Resin starvation, veil displacement, contamination or volatile entrapment.
Detection: Controlled lighting, limit sample and surface inspection.
Likely cause: Uneven cure, die wear, unstable tension or unsupported cooling.
Detection: Straightness fixture, twist measurement and control chart.
This guide uses the JEC process taxonomy, CAMX/ACMA/SAMPE review framework and process-specific material from industry associations, national research centers or government laboratories. Sources explain the process; they do not endorse listed suppliers.
Industry-level process taxonomy covering RTM, infusion, pultrusion, winding, fibre placement and additive manufacturing.
Peer-reviewed conference framework for manufacturing, processing, NDE and testing topics.
Continuous reinforcement, impregnation, forming die and puller process sequence.
Reviewed 16 August 2026. Verify current standards editions, material datasheets and project-specific acceptance requirements before award.
Only approved supplier submissions appear here. Pending, rejected and demo rows are excluded from public queries and sitemap output.
Browse the reviewed supplier profiles above or submit an RFQ. GetFRP does not fill empty categories with synthetic products.
Freeze the drawing, laminate architecture, resin grade, color, surface veil, property minima, test orientation, tolerances, machining and packing. Weight per metre alone does not define an equivalent profile.
Review reinforcement placement, resin batch and mix control, die-zone temperatures, pull speed and force, cure checks, dimensional sampling and the link between test coupons and the shipped laminate.
It can be engineered for multi-directional loading, but the strongest direction is normally along the continuous fibers. Mats, fabrics, joints and local details must address transverse and through-thickness demands.
Send one controlled specification. GetFRP checks the matching public network without inventing supply records.
Submit an RFQ