Demolding Fabric (also known as release fabric, peel ply, or release ply) is a specially woven nylon or polyester fabric used as a release layer in composite laminate processing. Applied directly onto the wet laminate or prepreg surface before vacuum bagging, this fabric serves two critical functions: it absorbs excess resin to optimize fiber-to-resin ratio, and after cure it peels away cleanly leaving a textured, contaminant-free surface ready for secondary bonding, painting, or additional lamination.
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