Kev tsim cov txhuam hniav ntau tau pib hauv Asmeskas ncig 1885. Ib qho ntawm thawj cov txhuam hniav hluav taws xob los ntaus Asmeskas lag luam yog xyoo 1960. Nws tau ua lag luam los ntawm lub tuam txhab Squibb nyob rau hauv lub npe Broxodent.
Thaum twg cov hniav txhuam hniav tau tshwm sim?
Kev txhuam hniav txhua hnub tau dhau los ua tsaug rau Ntiaj Teb Tsov Rog II, thaum cov tub rog Asmeskas xav kom cov tub rog txhuam hniav ua ib feem ntawm lawv cov kev coj huv txhua hnub. Thawj tus txhuam hniav nylon tau tsim hauv xyoo 1938, ua raws li cov txhuam hniav hluav taws xob hauv xyoo 1960.
Puas muaj txhuam hniav xyoo 1900?
Lub sijhawm xyoo 1900, celluloid maj mam hloov cov pob txha. Cov tsiaj nylon bristles kuj tau hloov los ntawm hluavtaws fibers, feem ntau nylon, los ntawm DuPont nyob rau hauv 1938. Thawj nylon bristle txhuam hniav ua nrog nylon yarn tau muag rau Lub Ob Hlis 24, 1938.
Thaum twg cov txhuam hniav tuaj rau Asmeskas?
Thawj Asmeskas patent rau txhuam hniav tau muab tso rau hauv 1857, thiab kev tsim khoom loj tau pib hauv Tebchaws Meskas 30 xyoo tom qab.
Puas tau txhuam hniav xyoo 1700?
Nyob teb chaws Europe, thawj zaug paub cov khoom txhuam hniav tau ua thaum xyoo 1700, tus txhuam hniav tau tsim qauv yooj yim; ib qho me me ntawm cov pob txha lossis ntoo raug laum nrog lub qhov me me thiab cov bristles tau muab khi rau ntawm txhuam taub hau. Los ntawm 1800s cov hniav txhuam hniav tau tsim ntau hauv ntau lub teb chaws.
