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Flexible thermoplastic prepregs for composites

News International-French

22 Feb 2016

Concordia Fibers' process of commingling, blending unsized continuous filament carbon or other reinforcement fibers with unsized continuous filament thermoplastic fibers produces a yarn that can be woven or braided into flexible fabrics. These fabrics can then be molded into complex shapes or tubes when put under heat and pressure.

Fiber engineering solutions
Since 1920 Concordia Fibers has specialized in the design and development of engineered yarns and fibers for producing a broad range of technical fabrics. Their fibers go into composite materials, filtration media, power transmission belts, air bags, and a variety of other unique applications. As an ISO 9001 company, they are committed to designing and providing quality fiber based products.

The company has developed a number of machines for converting a wide variety of fragile fibers including unsized carbon fiber, bio-absorbable fibers, and ceramic fibers. Their long history of working with many textile machine types gives them an advantage in fiber processing know-how and the ability to generate new methods of converting specialty fibers.

The company has designed and developed two unique processes for converting fibers for advanced composites: high volume carbon twisting and commingling.

Commingling
Commingling is a process for producing highly flexible thermoplastic prepregs. Concordia’s process intimately blends unsized continuous filament carbon fiber with unsized continuous filament thermoplastic fibers to produce a yarn that can be woven or braided into fabrics. These commingled fabrics can then be molded into complex thermoplastic composite shapes or tubes when put under heat and pressure.

Carbon twisting
Weavers of complex 3D carbon fiber preforms risk damaging fibers in the weaving process. Adding very low levels of highly consistent twist to each warp end allows the individual fibers to move past each other in the loom without damage. Concordia has developed custom machines for this purpose and can twist carbon fiber sizes ranging from 1K to 156K filaments.

More information: www.concordiafibers.com