Hais txog cov txhuam hniav, txhua tus paub txog lawv.Txhua tag kis sawv ntxov thiab yav tsaus ntuj, peb yuav tsum siv txhuam hniav los ntxuav peb cov hniav ua ntej sawv los yog tsaug zog.Nws yog ib qho tseem ceeb hauv peb lub neej txhua hnub.
Ntau cov kab lis kev cai qub hauv ntiaj teb tau siv los txhuam thiab txhuam hniav nrog twigs lossis me me ntawm cov ntoo.Lwm txoj hauv kev yog rub cov hniav nrog baking soda lossis chalk.
Cov txhuam hniav nrog cov plaub hau xim av tau tshwm sim hauv Is Nrias teb thiab Africa ib puag ncig 1600 BC.
Raws li American Dental Association, Emperor Xiaozong ntawm Tuam Tshoj nyob rau hauv 1498 kuj muaj ib tug luv luv, tawv txhuam hniav ua los ntawm ib tug npua lub mane muab tso rau hauv ib tug pob txha kov.
Xyoo 1938, DuPont tshuaj tau qhia cov txhuam hniav nrog cov hluavtaws fiber ntau es tsis txhob siv cov tsiaj bristles.Thawj txhuam hniav nrog nylon yarn bristles tuaj ntawm lub khw thaum Lub Ob Hlis 24, 1938.
Xws li cov txhuam hniav zoo li yooj yim, nws ua li cas, thiab siv tshuab dab tsi?
Cov khoom siv kho vajtse uas yuav tsum tau npaj rau kev tsim cov txhuam hniav yog cov txhuam hniav sib tsoo, kev txhaj tshuaj molding tshuab, kua nplaum tshuab, tufting tshuab, trimming tshuab, txiav tshuab, kub ntawv nyiaj stamping tshuab, ntim tshuab thiab lwm yam khoom siv tshuab.
Ua ntej tshaj plaws, raws li cov xim ntawm cov txhuam hniav uas yuav tsum tau ua, sib tov cov khoom nrog cov khoom yas thiab cov xim particle, do tusyees thiab tom qab ntawd muab tso rau hauv lub tshuab txhaj tshuaj molding rau kub molding.
Tom qab txhuam lub taub hau tawm, nws yuav tsum tau siv lub tshuab tufting.Lub bristle feem ntau muab faib ua ob hom: nylon thiab sharpened silk bristles.Nws cov mos thiab tawv degree yog faib raws li thickness, lub thicker qhov nyuaj.
Siv lub tshuab trimming tom qab ua tiav tufting.Lub bristle tuaj yeem ua rau ntau yam duab, xws li cov plaub hau tiaj tus, wavy plaub hau, thiab lwm yam.
Txawm hais tias tus txhuam hniav tsuas yog me me xwb, tab sis nws cov txheej txheem ntau lawm yog qhov nyuaj thiab nyuaj.
Post lub sij hawm: Jun-23-2022
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