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How are composite textile fabrics constructed?

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Diagram titled Spinning jenny showing an operator using a hand wheel to rotate a cord-driven roller, drawing and twisting fibers from multiple clamped rovings onto tilted spindles; numbered callouts trace the process from roving to thread. — textile An annotated diagram showing how an operator uses a hand wheel, rollers, and spindles on a spinning jenny to draw and twist unspun fiber into thread.

Composite textile fabrics are constructed through several distinct processes, depending on whether the goal is to create apparel-style laminates or high-performance structural materials.

Laminating and Bonding

In the context of conventional textiles, composite fabrics are often created through laminating, where two or more layers of fabric are joined together using adhesives, such as natural rubber, or by flame bonding. This process can combine a textile with a foam layer or join two thin fabric layers to improve dimensional stability.1

Other nonwoven composite structures are created through bonding methods, including:
* Adhesive bonding: Fibrous webs are sprayed with or passed through an adhesive (such as latex) and then cured.2
* Mechanical bonding: Webs are strengthened by needle-punching, which entangles the fibres to create a compact, strong product.2
* Stitch bonding: Machines like the Arachne machine use needles to stitch a fibrous web, providing longitudinal strength.2

Polymer-Matrix Composites (PMCs)

In industrial and aerospace applications, composite fabrics are constructed using textile preforms—fibres that are braided, woven, or knitted into specific designs. These preforms are often combined with a polymer matrix through:3
* Resin Transfer Molding (RTM): A preform is placed in a mold and injected with resin.3
* Lay-up processes: Pre-impregnated fabrics ("prepregs") are stacked over a tool and cured, or processed via automated tape-laying and filament winding.3
* Thermoforming: Preforms are heated and forced to conform to a tool shape under pressure.3