Conical/Pleated Paper Cups Thawj lub khob yog conical, xuas tes ua, glued ua ke, yooj yim cais, thiab yuav tsum tau siv sai li sai tau. Tom qab ntawd, folding ntawv khob ntxiv pleats rau lub sidewalls los ua kom lub zog ntawm lub sidewalls thiab lub durability ntawm daim ntawv khob, tab sis nws yog nyuaj dua los luam cov qauv ntawm cov folded nto, thiab cov nyhuv tsis zoo tagnrho.
Waxed Paper Cups
Nyob rau hauv 1932, thawj waxed ob daim ntawv khob tau qhia. Nws lub ntsej muag du tuaj yeem luam tawm nrog ntau cov qauv zoo nkauj los txhim kho cov nyhuv nce qib. Waxing daim ntawv khob tuaj yeem zam kev sib cuag ncaj qha ntawm cov dej haus thiab cov ntaub ntawv, tiv thaiv cov nplaum nplaum, thiab txhim kho cov kav ntev ntawm cov khob ntawv. Ntawm qhov tod tes, nws tseem ua kom cov tuab ntawm cov phab ntsa, txhim kho lub zog ntawm cov khob ntawv zoo heev, yog li txo cov ntawv yuav tsum tau ua kom muaj zog ntawm cov ntawv khob thiab txo cov nqi tsim khoom.
Raws li waxed ntawv khob los ua lub thawv rau cov dej txias, tib neeg kuj vam tias yuav siv lub thawv yooj yim los tuav cov dej kub. Txawm li cas los xij, cov dej qab zib kub yuav yaj cov wax txheej nyob rau sab hauv ntawm lub khob ntawv, thiab cov kua nplaum sib koom ua ke yuav sib cais, yog li cov khob ntawv khob zoo tib yam tsis haum rau tuav cov dej kub.
Ncaj-walled ob txheej khob
Txhawm rau nthuav dav daim ntawv thov ntau yam ntawm cov ntawv khob, ncaj-walled ob-txheej ntawv khob tau tsim tawm hauv kev ua lag luam xyoo 1940. Cov khob ntawv no tsis yog yooj yim nqa xwb, tab sis kuj tuaj yeem siv los tuav cov dej kub. Tom qab ntawd, cov tuam txhab tsim cov khob no nrog cov latex los npog cov "daim ntawv tsis hnov tsw" ntawm cov ntaub ntawv thiab txhim khu cov ntaub ntawv pov thawj ntawm cov khob ntawv. Ib txheej waxed khob kho nrog latex txheej yog dav siv nyob rau hauv tus kheej-service vending machines los tuav kas fes kub.
Zaj duab xis-coated yas ntawv khob
Qee lub tuam txhab khoom noj tau pib txheej polyethylene rau ntawm daim duab los qhia kom muaj kev thaiv thiab kev sib khi ntawm cov ntawv ntim. Txij li thaum lub melting point ntawm polyethylene yog ntau dua li ntawm wax, cov tshiab haus ntawv khob coated nrog cov ntaub ntawv no yuav siv tau zoo los tuav cov dej qab zib, daws qhov teeb meem ntawm cov khoom zoo cuam tshuam los ntawm melting ntawm cov khoom txheej. Nyob rau tib lub sijhawm, cov txheej txheej polyethylene yog smoother dua li cov ntaub ntawv qub, uas txhim kho cov tsos ntawm daim ntawv khob. Tsis tas li ntawd, nws cov thev naus laus zis ua haujlwm yog pheej yig dua thiab sai dua li txheej txheej latex.