Principle of pressure bag moulding after draping

The mandrel can be recoverable, or can be integrated in the finished part, for example, in the inner liner of high-pressure tanks. 

On-site machines for construction of very large tanks there are specific machines that build the tank on site, overcoming the transport problems. 

A heating device softens the pre-impregnated rovings. Rollers consolidate the composite before passing through a cooled die to solidify the thermoplastic matrix. 

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Figure 5.25. Principle of pressure bag moulding after draping...

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