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VAP® 3D: Membrane solutions adapted to component form

The qualified VAP® membrane system C2003 developed by Trans-Textil acts as the basis of the three-dimensional custom-shaped membranes developed as part of the AZIMUT and RoCK aviation projects. Custom-shaped system components facilitate lay-up handling and deliver significant time and costs savings in the fabrication of complex integral assemblies on the basis of tailor-made vacuum bags produced with the help of innovative joining techniques. Following the official start of the RoCK project, Trans-Textil GmbH and its partners are now concerned with streamlining the industrial-scale VAP® process still further.

Fabrication of a pressure bulkhead at Premium AEROTEC GmbH. Note the custom-made shaped vacuum bag made of C2003, an aviation-qualified membrane system by Trans-Textil.

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VAP® Membrane qualified for aviation applications
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Innovative moldmaking with VAP®

VAP® membrane systems for vacuum infusion

The membrane supported VAP® Vacuum Assisted Process is an advanced process technology based on the classical vacuum infusion techniques used to produce lightweight components out of fibre reinforced polymers (FRP). VAP® technology deploys semipermeable patented VAP® membrane systems for reliable degassing of the matrix material both during and after resin infusion. Thanks to the continual venting of trapped air and reaction gases, vacuum infiltration performed according to the VAP® Vacuum Assisted Process delivers quality components out of carbon fibre composites (CFC), glass-fibre reinforced polymers (GRP), aramid fibre-reinforced polymers (AFP) and other fibre-reinforced composites. Lightweight nil-porosity parts offering a precisely achievable fibre volume content without dry spots are the result. Since the membrane supported VAP® vacuum infusion process lowers costs by reducing the number of rejects and the need for reworking, it is a highly economical lightweight construction method for use in batch manufacturing and series production.

Cost-effective lightweight construction with VAP® vacuum infusion membrane

VAP® membrane systems and production auxiliaries not only deliver high process consistency and predictability but can also be adapted to the component in question for automation of process steps and reduction of handling. The interaction of patented VAP® membrane systems with various resins systems all the way up to the high-temperature level is tested in realistic conditions.

Patented technologies

The use of VAP® membrane systems produced by Trans-Textil has long been proving its worth, making it an established method for the production of high-quality lightweight components for use in aviation and wind power as well as in the transport sector and other industrial mass production applications. Airbus and Trans-Textil are owners of patents on membrane products and processes in the field of vacuum infusion, e.g. VAP® vacuum infusion process (DE 102010 011 067 B4 and DE 10 2008 006261 B3 as well as international PCT patent application WO 2011/110340 A1 and WO 2009/092543 A1, as well as domestic and foreign patent applications and patents resulting therefrom).

Without the consent of Airbus and Trans-Textil, the patented membrane products may not be manufactured, offered, supplied, placed on the market, used or imported for the aforementioned purposes, nor may they be owned. The use of such membrane products for resin infusion processes is only permitted in connection with membrane products manufactured by Trans-Textil GmbH. The membrane products are purchased from the authorized distributor Composyst GmbH.

VAP® and the VAP logo are internationally registered trademarks of Airbus Defence and Space GmbH. Their use is only permitted with the consent of the trademark owner.

VAP® membrane systems, support and training

The partners in the VAP® Alliance offer not only various production auxiliaries but also professional support in the areas of engineering, application technology and fabrication. They also accompany verification, qualification and acceptance processes as well as series and contract production, and furnish instruction and training in the use of membrane-assisted vacuum infusion according to the VAP® Vacuum Assisted Process.

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