FIELD: transport.
SUBSTANCE: elevator pull elements has, at least, one shell 46 of sheath 44 of higher adhesion. Proposed method comprises removing material from pull element surface. Note here that removed material represents surface mix of polyurethane and its admixtures. Pull element, hence, includes material to be removed from sheath material. One version comprises sheath outer surface has baring of polyurethane including no admixtures. In one version, mechanical removal of, at least, a portion of material rich in amides from surface 46 is used after extrusion of sheath onto pull expansion elements 42. In another version, chemical etching is used. Third version uses breakage of sheath surface integrity.
EFFECT: better friction properties.
20 cl, 9 dwg
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