본 발명은 18∼28% 중량부의 재생고무(EPDM계, NR계)와, 6∼15% 중량부의 연화제(파라핀유, 아로마유)와, 14∼24%중량부의 점착부여제(폴리부덴, PVA계 점착부여제)와, 40∼60%중량부의 충진제(탈크, 중탄산칼슘, 시멘트)와, 2∼6%중량부의 SBS 계열의 열가소성 수지를 기계식으로 강제 믹싱한다.
According to the present invention, 18-28 wt% of recycled rubber (EPDM-based or NR-based), 6-15 wt% of softener (paraffin oil or aromatic oil), 14-24 wt% of tackifier (polybutene or PVA-based tackifier), 40-60 wt% of filler (talc, calcium bicarbonate, or cement), and 2-6 wt% of SBS-based thermoplastic resin are mechanically forcibly mixed.patents-wipo patents-wipo