Lub hom phiaj ntawm pre shrinking thiab npaj

    Lub hom phiaj ntawm cov ntaub ua ntej shrink xov yog ua ntej shrink cov ntaub rau ib qho twg hauv cov lus qhia warp thiab weft, thiaj li yuav txo tau qhov shrinkage tus nqi ntawm cov khoom kawg thiab ua tau raws li qhov yuav tsum tau ua zoo ntawm cov khaub ncaws ua.

    Thaum lub sij hawm dyeing thiab finishing txheej txheem, cov ntaub yog raug nro nyob rau hauv lub warp kev taw qhia, uas ua rau ib tug txo nyob rau hauv qhov siab ntawm warp dabtsi yog khoov yoj thiab tshwm sim ntawm elongation. Thaum cov fibers hydrophilic yog tsau thiab soaked, cov fibers swell, thiab cov diameters ntawm warp thiab weft yarns nce, uas ua rau ib tug nce nyob rau hauv qhov siab ntawm bending yoj qhov siab ntawm warp yarn, txo qhov ntev ntawm cov ntaub, thiab tsim shrinkage. Qhov feem pua ​​txo qis hauv qhov ntev piv rau qhov qub ntev yog hu ua tus nqi shrinkage.

    Cov txheej txheem ua tiav ntawm kev txo cov shrinkage ntawm cov ntaub tom qab immersion hauv dej siv lub cev txoj kev, tseem hu ua mechanical pre shrinkage finishing. Mechanical preshrinking yog kom ntub cov ntaub los ntawm txau cov pa los yog tshuaj tsuag, thiab tom qab ntawd siv longitudinal mechanical extrusion los ua kom cov buckling yoj qhov siab, thiab tom qab ntawd xoob kom qhuav. Lub shrinkage tus nqi ntawm pre shrunk paj rwb ntaub yuav raug txo kom tsawg tshaj li 1%, thiab vim yog kev sib nrig sib compression thiab rubbing ntawm fibers thiab yarns, lub softness ntawm cov ntaub yuav zoo dua.