A preparation method for a turf-like knitted flannelette fabric, comprising the following steps:
- (1) grey cloth weaving:
- selecting appropriate yarn materials for carding to adapt to knitting, interweaving treated materials using a weaving machine to form a three-dimensional fabric structure, and adjusting a feeding amount of materials and parameters of the weaving machine to control an extension length of plush on the surface of the fabric to meet a fabric height requirement of 1.2 cm, thus ensuring a turf-like effect of the fabric;
- (2) high-speed luster finishing:
- carrying out after-treatment on the grey cloth with a high-speed natural luster finishing machine, and enabling surface fibers of the grey cloth achieve effects of flatness, smoothness and brightness under the action of high-temperature and high-speed compressive rollers, wherein at a luster finishing temperature of 200° C., fibers on the surface of the fabric are subjected to sufficient heat, and at a working speed of 25 m/min, the natural luster finishing machine is able to treat the fabric efficiently and improve the production efficiency, and the speed also ensures uniform heating and press-finishing effect of the fabric in the luster finishing process;
- (3) high-temperature hot air blowing:
- carrying out air blowing treatment on the fabric in a high-temperature environment, which is conducive to setting of the fabric to make the size of the fabric more stable, and is also conducive to fixing color of the fabric to make the color on the fabric more firm and not easy to fade;
- (4) high-temperature high-speed flapping:
- controlling a temperature at 150° C. to achieve both effects of gigging and finishing without causing excessive thermal damage to the fabric;
- setting treatment time to 20 mins to ensure enough time for thermal bonding and finishing between the fibers;
- setting flapping speed to 180 times per minute to ensure the continuity and uniformity of the flapping process, wherein the bonding force between the fibers is able to be enhanced through high-temperature and high-speed flapping, thus improving the wear resistance and durability of the fabric, and in the flapping process, part of loose or redundant fibers as well as impurities are able to be removed, making the fabric more pure and tidy;
- (5) high-temperature pre-setting:
- controlling a temperature at 190° C., enabling the fabric to pass through a setting machine at a speed of 30 m/min to fix the size of the fabric, thus preventing the fabric from size change in the subsequent processing and use process, wherein the form of the fabric is able to be fixed through the high-temperature pre-setting, making the fabric have better wrinkle resistance and flatness, and the high-temperature pre-setting is also able to enhance physical properties of the fabric, such as the wear resistance, tear resistance, and stretchiness;
- (6) low-alkali fiber opening:
- carrying out low-alkali fiber opening to make the fibers in the knitted flannelette swell and separate moderately, thus improving arrangement and interweaving states between the fibers, which is conducive to improving softness and bulkiness of the fabric, wherein the hygroscopicity and breathability of the knitted flannelette are improved through low-alkali fiber opening treatment, and the low-alkali fiber opening is also able to be used as pretreatment for subsequent dyeing, printing and other treatment steps, which is conducive to improving the effect and uniformity of the treatment steps;
- (7) high-temperature dyeing:
- dyeing for 50 minutes at a high temperature of 130-140° C. to ensure that dye molecules have enough time to diffuse and fix inside the fibers, wherein molecular chain movement inside the fiber is intensified, which makes dye molecules easily diffused from the surface to the inside of the fiber, thus improving a fixation rate of the dye, facilitating to reduce a flooding phenomenon after dyeing, and improving the color fastness of a dyed fabric;
- and the high-temperature dyeing is helpful to the uniform distribution of the dye molecules in the fiber, thus improving the uniformity of the dyed fabric;
- (8) secondary heat setting:
- feeding the fabric into the setting machine, adjusting a temperature and speed of the setting machine to preset values, applying proper tension to keep the fabric in a stable form in the setting process, wherein after the fabric is heated and cooled in the setting machine for a certain period of time, the secondary heat setting treatment is able to be completed, such that the dimensional stability, thermal stability and physical and mechanical properties of the fabric are able to be significantly improved, and the handling feel and appearance of the fabric are improved at the same time;
- (9) high-speed carding:
- feeding the knitted flannelette fabric into a carding box of a high-speed carding machine, adjusting parameters, such as a speed and a tension of the carding machine, to preset values, starting the carding machine, and carding the fabric under the action of a carding roller, after the carding is finished, turning off the carding machine, taking out the fabric for subsequent treatment, wherein high-speed carding is able to significantly improve the fluff effect of the knitted flannelette fabric;
- and through carding, the fluff on the surface of the fabric is more uniform and delicate, and the beautiful degree and hand feeling of the fabric are improved;
- and the carding machine is able to remove impurities and burrs on the surface of the fabric to improve the cleanliness and quality of the fabric;
- (10) secondary flapping:
- setting a flapping temperature to 150° C., which is conducive to the further loosening and movement of fiber molecular chains in the fabric, and makes the fluff fluffier;
- setting flapping time to 30 min to determine that the fabric is sufficiently treated in the flapping process, which makes the fluff effect more significantly;
- setting a flapping speed to 180 times per minute to ensure that flapping equipment is able to flap the fabric uniformly and efficiently, wherein the secondary flapping is able to significantly improve the fluff effect of the knitted flannelette fabric;
- (11) high-temperature setting of a finished product:
- heating the knitted flannelette fabric at a specific temperature and in a specific time to fix the form and size of the fabric and to improve the physical properties and appearance effect of the fabric, thus improving the dimensional stability, wrinkle resistance and durability of the fabric, and improving the hand feeling and glossiness of the fabric;
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- (12) transferring of a finished fabric:
- collecting and transferring the finished fabric after setting.