The single yarns of synthetic material unwound from the bobbins on the creel are heavily electrostatic charged due to friction in the ceramic eyelets. This will cause balloon formation (repel of yearns) between the creel and the warper. Simco-Ion advises to install anti-static bars underneath the yarns leaving the creel. Static electricity is recreated in the downline process caused by friction of the yearns in the combs causing fibre breaks and uneven (twisted) yarns on the warper. For obtaining a static free rewind, an antistatic bar is installed just before the warping.