1.1 Quality Indicators External Views White Powder Active Ingredients (%) 90* pH 6±1 Viscosity (P) 12 (10%, 85*C) Viscosity Thermal Stability (%) 1001.2 Main Features 1799 PVA Paste for Various Fibers With good adhesion performance, the viscosity of the slurry is stable, and it is not easily degraded. The film strength, abrasion resistance, and buckling strength are all higher than those of other pulps, and it has good sizing properties. It has been widely used for polyester and cotton fabrics for a long time. Cotton fine-count high-density fabric warp sizing. However, the 1799 PVA pulp also has a high viscosity because it is difficult to achieve a high-consistency and low-viscosity process when it is used as the main pulp slurry T/C yarn, and its printing and dyeing solution is also unfavorable to the environment, so that the grey fabric export is limited to the European Community. The T/C28X28405X228160, T/C30X42 236119.5 yarn card produced by our company is the key product of two foreign exchange earning for export. As a garment fabric, the quality of sizing yarn is very high. The factory has tried a slurry formulation containing PVA 66% and 34% esterified starch, but due to the high coverage factor (75%) of the warp yarns in the slurry pan, combined with high temperature sizing, the PVA is easily eutectic. The skin, resulting in a high level of pulp and crepe (up to 41% at the highest spot rate), is difficult to achieve by twisting the warp, and the good axis rate is not high, which seriously affects the further improvement of the pass rate of the grey cloth.
On the 160 yarn card, a small amount of test grouting was performed using the DY?65 polyester rubber powder produced by Jiangxi Dongyong Industrial Co., Ltd. instead of the 50% PVA solution in the original formula, and good results were obtained, followed by further promotion to medium-volume and batch production. Use, have achieved success.
DY?65 slurry has good solubility, uniform and stable slurry, good miscibility with other pulps, no delamination, good fluidity of slurry, low temperature will not be gelatinous, no pulp skin, no pulping, High fiber adhesion and good film formation. The sizing yarn body is smooth, soft to the touch, easy to desizing, easy to withdraw, and non-pollution to the environment. Therefore, DY?65 slurry can be regarded as a biochemical slurry that is both economical and environmentally friendly and can partially replace PVA.
2 Application 2.1 Slurry Formulation Slurry name Original formula (kg) Present formula (kg) Soft-sizing Strength Decrease Skewing Easily septum integrity E Regenerative wool House.Allrightsreserv Put the water depth in the cleaned sizing drum 28*1cm, slowly put in polyester powder and PVA, stirring soak 2Qnin, after boiling, boil 9Cmin stuffing, set the product 40*1cm measuring viscosity 21*1s stand-by; put in another wash barrel Deep water 16 persons 1cm, slowly put into the DM891 stirring soaking, heating and boiling; the cooked polyester powder, PVA slurry transferred to the DM891 slurry, mixed and suffocated after cooking 20min, set the product 67 1cm, measuring viscosity 12 *2s can be used.
2.2 Sizing Quality and Weaving Effect Quality Index Original Formula Current Formula Slurry Pot Viscosity Extremely Poor Viscosity () Pot Temperature (*C) Slurry Solids (%) Sizing Rate (%) Sizing Rate (%) Moisture Regain Rate (%) Resurfacing Qualification Rate (%) Axle Qualification Rate (%) Strong Rate (%) Deformation Rate (%) Sizing Rate (%) Sleeve Feel Rougher Slightly Sleek Open-Clarity Clearer Clearer Slurry crusting phenomenon There are very few pulps with good axis rate (%) broken (root/tablet.h) Pulp spotting rate (%) Cloth efficiency (%) First-rate qualification rate (%) Used from a large area According to the experiment, after using polyester powder, the PVA amount decreased, the viscosity of the slurry decreased and the solid content increased, the slurry was saturated, the sizing yarn strength increased, the sizing felt was softer, and the sizing was very small. Axial rate is increased, and the opening length of the cloth machine is increased by 2cm from the original. Through continuous monitoring and management, the viscosity fluctuation of the slurry pot is very poor. The viscosity is only 0.5s. The sizing quality and cloth machine efficiency are stable, and the qualification rate of the cotton cloth is steadily increased. The effect is remarkable. .
3 Slurry Cost Analysis Index Original Formula Current Formula Sizing Rate (%) 100m Warp Yarn Dry Weight (kg) 100m Pulp Dry Weight (*) 100m Sizing Cost (yuan) 63RMB, based on the current number of companies starting 120 units , The monthly output of 240km can save 0.87 million yuan, and can save the company's slurry cost of RMB 104,500 per year. If we add the scale of 144 sets of cloth machines to be used on the T/C30X42 2361195 yarn card afterwards, the cost of slurry can be saved by nearly 200,000 yuan each year.
4 Concluding remarks: The remaining slurry and the machine slurry were left without slurry for 4 hours and the viscosity of the slurry was stable.
The increase in solid content of the mixed pulp and the decrease in viscosity make it very beneficial to the realization of the sizing principle of 'saturation, strength, and elongation'. The sizing effect is good, the stranding is easy, and the shaft rate is high; the cloth machine has a clear opening, less break, and the cloth machine The efficiency is stable, and at the same time, the sizing increases due to the increase in solids content, decreases the extrusion rate, increases the drying efficiency of drying rooms, lowers energy consumption, and increases sizing yield.
After using the polyester glue slurry, the dyeing plant reflects the ease of desizing of the grey fabric, which avoids the high total tightness of the thick khaki fabrics, the unsatisfactory desizing of the grey fabric due to the poor control of the amount of PVA, and the resulting refusal. Dying claims.
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