Vacuum bag laminating with PRO-SET epoxy

Vacuum bagging is an excellent clamping method for composite construction. It is a useful laminating technique for PRO-SET® epoxy users.

Vacuum bagging enables you to ensure even pressure on the laminate. This enables more control of the resin/fibre ratio and can result in a more dense laminate, with a higher fibre volume. Generally, the higher the vacuum pressure, the lower the resin content.

The optimum resin/fibre ratio for a particular component will be between 30% and 50%. A lower ratio will result in a lighter composite. A higher ratio will be heavier, yet yield higher moisture exclusion effectiveness. Various bleeder and absorber materials used in vacuum bag laminating can also influence the resin/fibre ratio.

We recommend that you build test panels to determine the proper vacuum bagging material schedule and vacuum pressure for a particular component.



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Wet lay-up bonding
If you are working on a laminating project, you may also find it useful to read this page about wet lay-up bonding using PRO-SET laminating epoxies.

Vacuum bagging kit
If you are interested in the vacuum bagging technique, you might be interested to know that a vacuum bagging kit, containing many useful tools and accessories, is available in our WEST SYSTEM range. Find out more here

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