I have been producing polycaprolactone fibers by means of electrospinning on an aluminium foil onto a metallic collector plate. After the polymer fibers have deposited on the foil, I remove it from the collector plate. How can I store these fibers? Until now I have been folding the aluminum foil and labelling it with the name and suitable parameters used to produce that particular fiber. . But I have realised that this is not the way one is supposed to follow as the fibers are fragile and folding the foil may break the fibers. What is other alternative solution? This would also help me carry the fibers from one lab to another.