There's no real limit to the amount of layers you could laminate and then vacuum bag. If you're referring to
resin infusion rather than
vacuum bagging then, although you can certainly infuse very thick laminates, there would eventually be a limit to how much laminate the resin would infuse through. It does depend on the type of reinforcement - some, like 2/2 twills, flow much quicker than others, like unidirectionals. You can certainly infuse several millimeters of laminate, providing it flows well enough, which could be 10+ layers of fabric.
It's also worth noting that some infusion resins, like our
IN2 Epoxy Infusion Resin will flow slower than others, like our
IP2 Polyester Infusion Resin, which is considerably quicker and will therefore be able to infuse through thicker laminates. It's often the case that projects that use much thicker laminates, like a boat hull for example, would lend themselves to a polyester infusion resin whereas thinner laminates are often for higher spec projects and are therefore more suited to epoxy infusion resin.
I hope this helps.
Matt
Matt StathamEasy Composites / Carbon Mods - Technical Sales