Drapability

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Under drapability spherical ductility is meant a fabric without wrinkling. In contrast to the free deformation of a textile fabric by its own weight, which is referred to as the ability to fall, the drapability characterizes the possibility of a three-dimensional shape of such a structure by means of a forced deformation. Unrestricted two-dimensional deformability of the textile surface is a prerequisite for crease-free storage on a spherically shaped body.

A sufficient drapability of textile fabrics is z. B. necessary in hat production and when referring to upholstered furniture or car seats. The crease-free deformability is also of great importance in the production of three-dimensional fiber-reinforced plastic components in which flat textile structures are included as reinforcement structures.

The drapability of the textile fabrics depends on their type (e.g. woven , knitted , knitted , non- woven ) and the associated structures and the properties of the structural elements. These structural elements are predominantly threads in the form of filament yarns (continuous fiber yarns) made from high-performance fibers .

Comparisons of fabrics of the same warp and weft density and identical thread material show that the drapability improves from the plain weave (low) via the twill weave (medium) to the satin weave (high). It is therefore true that the greater the float , i.e. the greater the distance between the points of intersection of the warp and weft threads, the greater the drapability.

The drapability of a knitted multiaxial fabric can be tailored to the intended use by setting the mesh system ( type of weave or float , mesh density, number of meshes). For example, the tricot weave with a zigzag arrangement of the stitches offers better draping behavior than the fringe weave .

Individual evidence

  1. ↑ Definition of drapability by Karlheinz Hörsting and Burkhard Wulfhorst: Lecture 31st International Man-Made Fibers Conference Dornbirn 1992, abstracts, p. 10. Accessed on September 3, 2014 ( PDF ( Memento from March 4, 2016 in the Internet Archive ))
  2. ↑ AVK - Industrial Association for Reinforced Plastics eV (Ed.): Handbook fiber composite plastics: Basics, processing, applications . 3rd edition Wiesbaden: Vieweg + Teubner, 2010, ISBN 978-3-8348-0881-3 , p. 224
  3. ↑ Manfred Neitzel, Peter Mitschang, Ulf Breuer: Manual composite materials - materials, processing, application . 2nd, updated and expanded edition. Carl Hanser Verlag, Munich 2014, ISBN 978-3-446-43696-1 , p. 394
  4. ↑ Ralf-Dieter Reumann (Ed.): Test methods in textile and clothing technology . Springer, 2000, ISBN 3540661476 , ISBN 9783540661474 , p. 605, p. 613
  5. ↑ ibid, p. 613
  6. ↑ Chokri Cherif (Ed.): Textile materials for lightweight construction - Techniques - Process - Materials - Properties . Springer-Verlag, Berlin / Heidelberg 2011, ISBN 978-3-642-17991-4 , p. 182
  7. ^ Tucker, Charles L. III: Forming of Advanced Composites In: Gutowski, Timothy GP (Ed.): Advanced Composites Manufacturing . New York, NY: Wiley, 1997, pp. 297-372, pp. 299
  8. ↑ Wulfhorst, Burkhard: Textile manufacturing processes: An introduction. Munich: Hanser, 1998, p. 207
  9. ↑ Manfred Neitzel, Peter Mitschang, Ulf Breuer: Manual composite materials - materials, processing, application . 2nd, updated and expanded edition. Carl Hanser Verlag, Munich 2014, ISBN 978-3-446-43696-1 , p. 84