Fuente: WIPO "hemp" High -rise high -speed elevator wire rope uses sisal hemp core, it relates to the elevator and makes technical field, it contains inlayer yarn of ramie thigh, outer yarn of ramie thigh, fills yarn of ramie thigh, the even package of the outer yarn of ramie thigh of three -strand is established in the outside of inlayer yarn of ramie thigh, and the outside clearance department of outer yarn of ramie thigh is equipped with several strands and packs yarn of ramie thigh, inlayer yarn of ramie thigh comprises three yarns of ramie system of twisting with the fingers, outer yarn of ramie thigh comprises the six roots of sensation yarn of ramie system of twisting with the fingers, it comprises three yarns of ramie system of twisting with the fingers to fill yarn of ramie thigh. Its density is big, consequently adopts the wire rope holding power of this kind of sisal hemp core also big, is difficult to the fracture, has improved wire rope's life and safety in utilization greatly.