Patent ID: 6047537
Filing Date: 2000-04-11
Classification: D01H

Abstract:
A method for producing a twisted yarn by an integrated spinning and twisting process; said method comprising the steps of:a) spinning individual spun yarns (F1, F2) from loose fiber material in at least two spinning devices (R1, R2);b) combining the spun yarns (F1, F2) and guiding the spun yarns (F1, F2) in a first direction;c) subjecting the spun yarns (F1, F2) to a common first twisting to form a once twisted yarn;d) guiding the once twisted yarn in a second direction opposite said first direction according to the two-for-one twisting principle to form a yarn balloon and subject the once twisted yarn to a second twisting to form a twice twisted yarn (F3);e) feeding the twice twisted yarn (F3) through a centering point (37) to a winding device;f) feeding the loose fiber material into an annular chamber (10), that is coaxial to the yarn balloon and in which the yarn balloon freely rotates, and substantially radially through the yarn balloon such that the twice twisted yarn of the yarn balloon (F3) directly passes through the loose fiber material;g) conveying the loose fiber material from the annular chamber (10) substantially radially inwardly into the spinning devices (R1, R2) by a pressure gradient.