| http://www.w3.org/ns/prov#value | - The monofilaments may consist of several components including at leastone thermoplastic component.BRIEF DESCRIPTION OF THE DRAWINGSExamples of the invention are explained in more detail hereafter with reference to the drawings in which:FIG. 1 is a top plan view of several windings of a double helix;FIG. 2 is a perspective view of a short piece of a double helix;FIG. 3 is a side view showing the po
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