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Select your flow media and/or core material Flow Media A concept unique to vacuum infusion is the idea of flow media. In VIP, resin enters the laminate at a fixed point (or points) and must be directed. Resin will always travel in the path of least resistance. Unfortunately, many reinforcements can provide a great deal of resistance that can prevent resin flow. Aiding the flow of resin is the job of flow media. Although it is possible to infuse resin into a reinforcement without the addition of flow media, it is rarely successful. The flow media is typically laid as a single layer between layers of reinforcement to provide an easy flow conduit for resin. This material ultimately becomes part of the laminate. Flow media comes in several styles. • EnkaFusion Nylon Matting (#1401) provides the fastest infusion times. Constructed of randomly oriented, entangled nylon filaments, this matting can typically move resin as fast it can be fed. • Lantor Soric® XF (#1409) provides maximum conformability. This material is used as both a bulker and flow media. It has hexagonal flow channels that quickly move resin throughout the laminate, while simultaneously adding thickness. Laminates incorporating Soric® can typically experience 35% less resin retention than all glass laminates. Though used as a core, Lantor Soric® does not provide any significant structural properties. • DIVINYMAT Sandwich Core (#1024) serves as both a flow media and structural core. This material is similar to traditional vinyl foam cores, but includes grooves, perforations, and scores in the core material to help resin traverse the laminate while simultaneously adding strength and rigidity. Additionally, this material is on a scrim backing to aid conformability. (Traditional, closed-cell cores are not recommended as they tend to pool resin rather than aid its flow.) Step 2 Resin and Vacuum Lines Before the vacuum bag is closed, careful consideration must be taken in order to set up resin and vacuum lines Select and install your resin feed lines Resin will be fed from a standing source (usually a bucket.) The line for getting the resin into the laminate will have to be installed before closing the bag. Although the same tubing that is used for applying vacuum is fine for getting the resin to the bag, after the resin is being directed through the laminate there are some materials unique to VIP which can help direct the resin flow. • EnkaFusion Filter Jacket (#1400) is used in nearly all VIP projects. This material will be used on top of the laminate and removed from the laminate when pulling the part from the mold. It will also provide the removable material which can be used for anchoring your T-fittings which will connect your resin and vacuum lines. Pg. 6 of 14PDF Image | Vacuum Infusion
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