Abstract
By dynamically controlling the feeding amount and feeding ratio of the three feeding rollers with program logical control system under the requirements of yarn spinning parameters, it is possible to effectively configure the final yarn density and the blending ratio of three components to produce multisegment gradient yarns, segment-color yarn, and segment-color slub yarn named as multisegment blending yarns. The yarn-spinning new method was proposed. Different kinds of fancy yarns including gradient yarns, segment color yarns, and slub yarns were produced. The fiber blending effects were demonstrated by slices of yarn cross section, and the surface morphology of yarns were figured out by the photo of yarns. Integrally knitting seamless sweater and different type of pattern were designed and knitted by multisegment blending yarns. The free change of colors along the length direction on a single yarn provides an effective method for integrated rapid design and production of sweaters through mutual design of the overall pattern and the structure of the fabric.
Highlights
Colors and patterns are an important criterion for people to choose sweaters
The overall pattern of colored fabric is generally achieved by interweaving different colored yarns
Four kinds of gradient yarn, three kinds of segment yarn, and one type of slub color yarn were spun as listed in Figures 4 to 11 to produce single jersey weft knitted fabrics
Summary
Colors and patterns are an important criterion for people to choose sweaters. For the modern sweaters, it has been a trend to combine patterns with the overall shape of the sweater, and apply the pattern as a whole to the contour of the sweater.[1,2] The overall pattern of colored fabric is generally achieved by interweaving different colored yarns. The pattern design is complicated, and the knitting process is rather difficult.[3,4,5] With the mutual design of the overall pattern of the sweater and the fabric structure, as demonstrated by Figure 1, the integrated design and production of sweaters can be realized quickly with multisegment blending colored yarns such as rotor spinning gradient yarns and segment color yarns.[6]. Rotor spinning is the second-largest spinning method that is second only to ring spinning in terms of market share. It has the advantages of high production efficiency and short process flow. The speed of the rotor has been increased, and the large package of the bobbin has been used for spinning.[7,8] Significant progress has been made in the expansion of suitable spinning counts and has attracted widespread attention from the industry and scholars.[9,10] Three-channel rotor spinning machine can produce rotor spun yarns with multiple segments and
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