synthetic fiber is superior in physical property to conventional antibacterial fibers and is suitable for use as a material for clothes application_number US 201213579130 A description a better understanding of the present invention may be obtained through the following examples which are set forth to illustrate but are not to be construed as limiting the present invention four p p non woven sacks each containing 2 kg of pulverized powder of forsythia suspensa vahl were put into a pressure decoction machine and 20 kg of water was added after boiling at 130 u00b0 c for 3 hours the decoction was pressurised in a hydraulic linkage to produce 15 kg of an extract this was concentrated into 5 kg by two rounds of filtration through a 5 micron filter the procedure was continued until 65 kg of a concentrated extract was obtained preparation of extracts from lonicerae flos ginkgo leaves and cinnamon barks respective concentrated extracts from lonicerae flos ginkgo leaves and cinnamon bark were prepared in a manner similar to that of preparation example 1 each of the extracts prepared in preparation examples 1 to 4 was mixed in an amount of 2 wt with polypropylene chips followed by drying at 60 u00b0 c for 2 hours in a rotary hot air drier to afford coated chips using a pilot spinning machine 2 kg of the coating chips was spun at 225 u00b0 c in a typical manner to produce 150 denier 28 fila filaments the extract obtained in preparation example 1 was mixed in an amount.