METHOD OF MANUFACTURING HIGH MOLECULAR POLYETHYLENE MONOFILAMENT BY USING WASTED HIGH MOLECULAR POLYETHYLENE FILM CONTAINING OIL AND HIGH MOLECULAR POLYETHYLENE MONOFILAMENT MANUFACTURED THEREBY

摘要

According to the present invention, a high molecular polyethylene monofilament is manufactured by: grinding a waste high molecular polyethylene film containing oil; firstly removing the oil by thermally treating the waste high molecular polyethylene film in a heater; secondly removing oil by continuously treating the waste high molecular polyethylene film with methylene chloride; producing reused high molecular polyethylene pellets by melting and extruding the waste high molecular polyethylene film; making the reused high molecular polyethylene pellets pass through a heat tube by melting and spinning the high molecular polyethylene pellets into monofilaments; and quenching, elongating, thermally setting the monofilaments. According to the present invention, the waste high molecular polyethylene film containing oil which is generated when a separation membrane of a lithium secondary battery is manufactured is used. Therefore, waste of resource, emission of carbon dioxide, consumption of petroleum, and environmental waste can be reduced. Consequently, high molecular polyethylene monofilaments with high performance can be manufactured at low costs and in an eco-friendly manner.