Polyester Fiber. Of Modal And Fine Denier Yarn Dyed Grid Woven Fabric

Modal fibre has cotton's softness, silk's lustre, polyester's strength, hemp's smoothness and its water absorption and permeability are all better than cotton. Modal fibre may blend and interweave with various fibres which brings each fibrous characteristic into play and reaches nicer wear behaviour. As a new kind of fibre, the Modal blended yarn and the interlaced fabric need to be further studied. This project mainly focus on the research and development of interweaving fabric with fine denier polyester yarnT48^S and Modal blended yarn M/T (80/20) 45^S at different proportion, analyzing the productive technology and doing conscientious analysis to their yarns and interweaved fabrics.Since the production of blended yarn of fine denier polyester and Modal fibre isvery difficult, there is no useful experience at present. The project developed a set ofeffective spinning technology on the basis of carefully studying the spin ability of finedenier polyester and Modal fibre. In actual production, the opening and cleaningprocesses adopt the "meticulously take, few strike, low velocity" technical principle; thecarding adopt "light drafting weight and light tension, low velocity, middle draftingfield, light compression" in order not to break fibres and not to produce cotton neps; thedrawing adopt "high condensed, high compression, middle weight, big drafting field "in order to improve the parallel alignment of the fibres and the evenness of the yarns.Since Modal fibre is glossy, the cohesive force is bad and the elasticity is good, the finepackages of roving and the perfect roving evenness are required. The rotten roving andflokkit roving are not permitted in the spinning procedure and principle of "low velocity,high compressionand high twist" is adopted. In spinning, the principle of "high twist,low degree behind drafting ratio, big behind drafting field, small front drafting field,middle compression" is benefit to the drafting and spun yarn quality.As the T48^S: M/T45^S was 8: 4, the ratio of two warp yarns is as great as 2:1. In such abig difference between the two warp conditions, sizing process bears a great challengein order to enable the warps with the same sizing effect and winding on the same warpbeam. Taking into account the variety of cycling and warp with two warps their differentcharacteristics, the sizing process is determined: two by the Pulp, comb - Pai took action, the highconcentration of high-pressure and low viscosity, "a high-low 2" sizing process. In order to easethe drawing-in process, food color yarn (Carmine) was used to color easy-coloredM₈₀/T₂₀. Two types of size menu were determined for the two different yarns and thesizing process was optimized.In order to promote the efficiency, yield and quality of air-jet loom, six healds changed to eight, that is, the two healds for plain weave were changed into four which reduce yarn number by 50% on each heald. Thereby it can reduce the mutual friction between the yarn and, the chances of the hairiness struggle and decapitation. Orthogonal analysis method was used to analyze the opening time, the tension and the speed of the air-jet loom, their best combination was obtained so as to improve the production efficiency, yield and first degree product rate.The collation of cloth pre-dyeing finish and dyeing is for forming a very mature production process. The testing of fabric performance shows that Modal/ polyester imitation of yarn-dyed check fabric has the strong strength, good wear resistance, poor insulation, air permeability, and smooth, soft, shiny, and good dimensional stability, dyeing good performance, without prickle sensation, which are all relatively ideal for summer fabric. It has better anti-crease performance than cotton and viscose fabrics, and it is easy washing, easy to store, fabric toughing.