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In collaboration with Trans-Textil, Composyst supplies flexible material solutions in the form of customer-specific ready-mades for the VAP vacuum infusion process.
Involving specifically-shaped tubes, filters or membrane tapes, Composyst says the ready-mades offer all the advantages of the VAP method and can be used as a supplement in conventional means of producing intricate components of any size. At the VAP Alliance booth at Composites Europe, the two partners will be presenting their latest product developments in this field.
Composyst explains that it assigns highest priority to its customers and their production processes. Early on the company and its partners realised that enabling customers to adopt more economical production processes or assisting them in their respective work was a question of meeting their specific needs. To facilitate ready-mades handling, they accordingly developed materials in various combinations, widths or lengths that have long become standard in the serial production of wind power, boat and vehicle components.
VAP Tubes and self-adhesive VAP Tapes make VAP membrane systems more flexible in use. The technical ready-mades eliminate offcuts, thus saving on material, and facilitate use of the membrane systems both locally and over entire component surfaces in special solutions for exacting fabrication and repair concepts. In the VAP process they ensure reliable removal of air and gases residues from the resin matrix and thus prevent the formation of dry spots and pores in the vicinity of wherever they find use in the lay-up. Thanks to their flat configuration and integrated breather layer, they hardly leave a mark on the components concerned.
Due to its long experience with VAP applications, Composyst says it handles worldwide sales of ready-made VAP products and assists in their swift and efficient deployment in fabrication work. VAP membrane products can be further adapted to individual requirements by their exclusive manufacturer Trans-Textil.
One of Trans-Textil’s core competencies concerns use of advanced fabric system and coating technologies in the development and production of multi-layer functional textile products for technical applications. Accordingly the exclusive manufacturer of VAP membrane systems adapts the characteristics of these products to specific fabrication parameters and where applicable provides additional functional layers, for example in order to optimise the removal of extracted air in the process lay-up.
In response to calls for automated and optimised process chains, Trans-Textil and Composyst have been involved in a further made-to-shape approach especially devised for large aviation structures as part of the AZIMUT and RoCk projects. In co-operation with the Institute of Textile Machinery and High Performance Material Technology (ITM) at the Dresden Technical University, the company Rudolf Hujber Spezialkonfektion and the special making-up experts at S+S, they have devised a VAP 3D material kit that comprises all the textile auxiliaries required in the process lay-up, all shaped to the geometry of the component concerned for automated layer stacking with a high degree of precision. The VAP Network partners have also developed new joining techniques for aviation-qualified components, including the VAP C2003 membrane system. A trial involving fabrication of a full-size Airbus A350 pressure bulkhead has proved the worth of the VAP 3D material kit in the field.
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