Vacuum-pressure water immersion cycle

A much better approach to the elimination of uneven pressure application is the use of a relatively new technique isostatic lamination. In this process the layers are stacked on a fixture plate and sealed in a vacuum bag. The bag (or several bags) are then immersed in a pressure chamber that is filled with heated water or a mixture of water and glycerin. Most isostatic pressure chambers operate between 34.5 and 68.9 MPa (5000 and 10,000 psi). Typical temperatures range from 70 to 90°C and the time for the complete cycle is from 3 to 10 minutes. The manufacturers state the following advantages of isostatic lamination ... 

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