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AGY Introduces New Thermoplastic Sizing Systems

  • Tuesday, 25th March 2014
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AGY has introduced a range of S-2 Glass and E-Glass yarns complete with thermoplastics compatible sizes for use in woven fabrics and a range of other conversion steps.

AGY explains that the new yarn products have a sizing system tailored to achieve the optimum bond between the fibres and the thermoplastics but allow the use of the fibers in traditional glass fibre conversion processes. It says some fibre manufacturers have a size system that works for several polymer systems; however the tailoring of the sizing systems shows improved performance over these multi-use systems as they are designed to meet the requirements of a much narrower range of polymers. In today’s demanding markets it explains that this ability to offer a unique solution to markets such as aerospace, sporting goods, consumer electronic enclosures, and medical devices has led to a significant demand for new yarn type products.

“The interest in our new sizing systems has continued at a high pace. We started with products aimed for the formulators who used traditional chopped fibres and quickly were seeing requests for rovings and now into our unique range of S-2 Glass yarns,” said Drew Walker, CEO of AGY.  “The development for our sizing programs into a range of products has been fast, our initial developments gave us good information on resin compatibility and with our experience in direct sized fibres we have been able to translate those sizes designed for chopped products into the products requested for S-2 Glass yarns. The whole range of thermoplastic products have been shown to increase performance over traditional E-Glass but also over other high performance glass fibres and with AGY’s advantage in flexible manufacturing we have been able to offer solutions in formats and compatibility to meet diverse customer requirements”.

The new sizing systems are designed to work with a wide range of polymer chemistries and are available on a range of fibre diameters and are suitable for a range of high temperature resin systems such as PEEK, PEKK, PEI, PPS as well as engineering resins such as PA 6, PA6.6, PA11, PA12, PC, and PBT. The sizing can be supplied on E-Glass and S-2 Glass based yarns as well as existing system used on ZenTron rovings, S-2 Glass assembled rovings and chopped glass fibre formats.


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