textilverarbeitungsverfahren for the manufacture of flammgarnen and device for implementation of the procedure

摘要

1379463 Spinning yarns; draft rollers RADICI MATERASSI SpA 3 July 1972 [28 July 1971] 31027/72 Headings D1D and D1F Apparatus for producing flaked yarns provides a drafting zone comprising two pairs of drafting rollers one pair of which includes a rubber or rubber-faced pressing roller formed with circularly extending depressions and a fluted metal roller cooperating therewith. A variety of yarns having cyclically occurring patterns of "flakes" or similar irregularities may be obtained by changing the number, depth and pattern of the depressions.