Thermal ntawv yog ib qho khoom siv feem ntau siv hauv ntau yam lag luam xws li khw muag khoom, tuam txhab nyiaj thiab kev xa khoom.Nws yog coated nrog ib tug tshwj xeeb zas xim uas hloov xim thaum rhuab, ua rau nws zoo tagnrho rau luam ntawv txais nyiaj, daim ntawv lo thiab barcode stickers.Txawm li cas los xij, cov ntawv thermal tsis tuaj yeem rov ua dua los ntawm kev siv cov ntawv ib txwm siv rov ua dua tshiab vim muaj cov tshuaj lom neeg thiab cov khoom paug.Yog li ntawd, cov txheej txheem tshwj xeeb yuav tsum tau ua kom zoo thiab rov ua dua cov ntawv thermal thiab txo nws qhov cuam tshuam rau ib puag ncig.Hauv tsab xov xwm no, peb yuav tshawb xyuas cov kauj ruam hauv kev ua thiab rov ua dua ntawm cov ntawv thermal.
Thawj kauj ruam hauv cov txheej txheem rov ua dua yog sau cov ntawv siv thermal.Qhov no tuaj yeem ua tiav los ntawm ntau txoj hauv kev, xws li tso cov khoom ntim rau hauv cov khw muag khoom thiab chaw ua haujlwm, lossis ua haujlwm nrog cov tuam txhab rov ua dua los sau cov ntawv thermal.Kev sib cais kom raug yog qhov tseem ceeb los xyuas kom meej tias tsuas yog cov ntawv thermal sau thiab tsis sib xyaw nrog lwm hom ntawv.
Thaum sau tau, cov ntawv thermal raug thauj mus rau qhov chaw rov ua dua tshiab uas nws mus dhau los ntawm ntau cov kauj ruam kom tshem tawm cov dyes thiab lwm yam kab mob.Thawj kauj ruam hauv kev ua theem yog hu ua pulping, qhov twg cov ntawv thermal yog tov nrog dej kom tawg mus rau hauv ib tus neeg fibers.Cov txheej txheem no pab cais cov xim ntawm cov ntawv fibers.
Tom qab pulping, qhov sib tov yog tshuaj xyuas kom tshem tawm cov khoom seem thiab cov kab mob.Cov kua ua kua yog tom qab ntawd raug rau cov txheej txheem flotation, qhov twg huab cua npuas tau qhia kom cais cov xim ntawm cov dej.Cov xim yog sib dua thiab ntab mus rau saum npoo thiab yog skimmed tawm, thaum cov dej ntshiab yog muab pov tseg.
Cov kauj ruam tom ntej hauv cov txheej txheem rov ua dua yog tshem tawm cov tshuaj muaj nyob hauv daim ntawv thermal.Cov tshuaj no muaj xws li bisphenol A (BPA), uas ua raws li tus tsim tawm rau dyes ntawm daim ntawv.BPA yog tus paub txog endocrine cuam tshuam uas ua rau muaj kev pheej hmoo rau tib neeg kev noj qab haus huv thiab ib puag ncig.Ntau yam thev naus laus zis, xws li activated carbon adsorption thiab ion exchange, tuaj yeem siv los tshem BPA thiab lwm yam tshuaj los ntawm dej.
Thaum cov dyes thiab tshuaj tau raug tshem tawm ntawm cov dej zoo, cov dej huv huv tuaj yeem rov siv dua lossis tawm tom qab kev kho kom zoo.Cov ntawv fibers uas tseem tshuav tam sim no tuaj yeem muab pov tseg zoo li cov txheej txheem rov ua dua tshiab.Lub pulp yog ntxuav, refined thiab bleached los txhim kho nws zoo ua ntej nws yuav siv los ua cov khoom tshiab.
Nws yuav tsum raug sau tseg tias kev rov ua dua ntawm cov ntawv thermal yog txheej txheem nyuaj uas yuav tsum tau siv thev naus laus zis thiab khoom siv.Yog li ntawd, nws yog ib qho tseem ceeb rau cov lag luam thiab cov tib neeg uas siv cov ntawv thermal ua hauj lwm nrog cov chaw tsim khoom siv tau lees paub los xyuas kom muaj kev tuav thiab rov ua dua tshiab.
Hauv kev xaus, cov ntawv thermal, txawm tias siv dav, nthuav tawm cov teeb meem rov ua dua tshiab vim muaj cov tshuaj lom neeg thiab cov khoom paug.Kev ua thiab rov ua dua ntawm cov ntawv thermal muaj ntau cov kauj ruam, suav nrog pulping, flotation, tshuaj tshem tawm thiab kho fiber ntau.Los ntawm kev siv cov txheej txheem sau cov khoom tsim nyog thiab ua haujlwm nrog cov khoom siv rov ua dua tshiab, peb tuaj yeem txo qhov cuam tshuam ib puag ncig ntawm cov ntawv thermal thiab txhawb nqa kev tswj xyuas pov tseg kom ruaj khov.
Post lub sij hawm: Nov-24-2023