Electronic Let-off Systems for Advanced Technical Narrow Fabrics
The owner of Crealet, Walter Wirz, has written a technical feature and we would like to present it to TextileFuture’s readers
New materials and weaving techniques are making it possible to weave high-tech fabrics with a wide range of new properties. On the one hand new features are possible by new materials and on the other hand by a clever arrangement of different yarn systems.
Multilayer fabrics or 3-D woven fabrics are fabrics with a substantial thickness, many times greater than the diameter of the yarn used to produce the fabric.
They are used as preformed shapes ready for resin impregnation or as thick materials with structural integrity. When resinated they have superior shear strength and thus outperform conventional laminated products.
Manufacturing industrial fabrics is often more difficult because higher-value fibres and materials can be more difficult to manipulate due to the intrinsic performance specifications.
Such products are used in aerospace, military, fashion, equestrian and industrial applications.
For high-tech fabrics, warp tension is a major parameter of the weaving process. A low and constant warp tension is the key. Producing a woven fabric involves the following basic actions: Feed of warp threads from warp beams or creel; Forming of shed by movement of the heald shafts; Insertion of the weft yarn; Beat up by the reed movement; Taking up of the woven fabric.
The main tension exerted on the warp is dependent mainly on the difference between the circumference speeds of the warp beam and fabric beam.
Superimposed on the mean tension are tension changes caused by movement of the back rest roller, the heald shafts and the reed. The back rest roller is for example another major influencing factor for the warp tension. The main task of the back rest roller is: ”Steering” the warp in the product direction; Compensating tension caused by shed formation; Warp tension control with measurement elements.
In carrying out a customer project, CREALET takes into account all these different parameters to design the best possible technical and innovative solutions for: Warp feeding from multiple warp beams or bobbin creels; Feeding of different yarn counts in warp and different weave in Warp tension adjustment indicator; Use of bigger warp beams; Feeding of other materials like LED cables and wires, etc.
The company is a leading supplier of custom-built electronic warp let-off and electronic take-up systems. We specialize in creative custom-design solutions for producing technical fabrics. Our success story in narrow weaving includes controlling small warp beams, wide beams and beam creels with up to 8 wide warp beams for elastic ribbon weaving.
CREALET has realized a diverse array of interesting solutions together with its customers, enabling them to implement weaving new fabric styles and gain a competitive advantage.
The company’s customers’ requirements change extremely rapidly and there are always new customers with new requirements. We strive to be extremely flexible and focused on products to meet the customer’s expectations.