Aug 10th 2021
In this series we’ve been looking at & learning about Core Materials for composites. Last week our topic focus was on Nomex Honeycomb Core. As we continue on we’ll be taking a look at the Lantor Soric® Line of core options and products.
Lantor Soric line of polyester non-woven core material that geared toward Infusion processes. Each line exhibits a hexagonal structure for added compression resistance and rigidity over that of Coremat. Soric cores also double as a flow media in resin infusion and may eliminate the need for additional flow media or peel ply. Although there are PVC and other foam types of core that may yield lighter weight composites, none of them are easier to use in infusion layups that the Soric line of infusible core. It is soft and easily formable, flexes over contoured surfaces, and is easy to cut. Soric has a few lines of core material that are all similar but are geared toward obtaining the best characteristics in terms of thin or thick laminates, density, flow rates, and aspects of high-quality surface finishes. Unlike Honeycomb cores, Soric does not need to be chamfered to encase in a laminate structure. (though it can be chamfered). It may be much easier to simply match the reinforcement thickness around where the core material is laid up as shown below.
Lantor Soric SF line is an all-around good choice for general purpose laminates and yields good surface finishes of cured laminates as it mitigates the print through of the core on the laminate. The SF line is ideal in thinner laminates as it has smaller flow channels for resin intake.
Lantor Soric XF line is very comparable to that of the SF line with the main difference being the application method and the flow rate of resin. The channel sizing of the XF line is larger, allowing higher flow rates of resin; being available in thicker sizes thus allowing for thicker laminates.
Lantor Soric TF line promotes the best surface finishes. It does not have the flow channels, so the rate of resin flow may not be as fast, but the print blocking is maximized. It is slightly heavier when impregnated than the above choices. Soric TF is also offered in a Dark Grey color to achieve a black carbon fiber look in laminates.
Lantor Coremat (Budget Minded Choice)
Coremat is used for adding bulk to traditional layup methods for all conventional resin type needs. Simple in its design of shredded polyester material, it adds rigidity and thickness to parts, and is a great time / cost-effective solution for core needs of traditional layups. This core material will also control print through. Coremat is easy to trim, being cut by hand and even easier to apply in layup processes. Lantor provides a short how-to video on the ease of Coremat in traditional layup practices and is available below.