wherein {HEAD ~ the mass} of second fibers comprises {TAIL ~ left over fibers} produced when carding a fiber material, said second fibers having a shorter length than said first fibers 
wherein { HEAD ~ the mass } of second fibers comprises { TAIL ~ left over fibers } produced when carding a fiber material , said second fibers having a shorter length than said first fibers
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH