Kev Txhim Kho Keeb Kwm Ntawm Cov Ntawv Khob

Keeb kwm ntawm lub khob ntawv tau dhau los ntawm plaub theem:

1. Lub khob ntawv khob

Conical/folded paper cups Thawj lub khob ntawv uas tawm los yog lub khob hliav qab, ua los ntawm tes, glued ua ke, yooj yim rau kev sib cais, thiab yuav tsum tau siv sai li sai tau. Cov khob khob khob uas tau tshwm sim tom qab ntxiv folds rau ntawm phab ntsa sab nrauv kom muaj zog ntawm cov phab ntsa sab nrauv thiab cov kav ntev ntawm cov ntawv khob. Txawm li cas los xij, nws nyuaj dua rau kev luam cov qauv ntawm cov folded nto, thiab cov nyhuv tsis zoo tagnrho.

2. Daim ntawv khob

Xyoo 1932, thawj daim ntawv siv quav ciab-coated ob-daim ntawv khob tuaj. Nws lub ntsej muag du tuaj yeem luam tawm nrog ntau cov qauv zoo nkauj los txhim kho cov txiaj ntsig kev txhawb nqa. Waxing daim ntawv khob, ntawm ib sab, tuaj yeem zam kev sib cuag ncaj qha ntawm cov dej haus thiab daim ntawv, thiab tuaj yeem tiv thaiv cov nplaum nplaum thiab txhim khu kev ua haujlwm ntawm lub khob ntawv; ntawm qhov tod tes, nws kuj nce lub thickness ntawm sab phab ntsa, uas zoo heev txhim kho lub zog ntawm daim ntawv khob, yog li txo tus nqi ntawm daim ntawv tsim nyog rau ua kom muaj zog daim ntawv khob txo nqi ntau lawm.

Raws li waxed ntawv khob ua ntim rau cov dej txias, tib neeg kuj cia siab tias yuav siv lub thawv yooj yim los tuav cov dej kub. Txawm li cas los xij, cov dej kub kub yuav yaj cov wax txheej nyob rau sab hauv ntawm lub khob ntawv, thiab cov kua nplaum qhib yuav sib cais. Yog li ntawd, cov ntaub ntawv siv quav ciab-coated ntawv khob tsis haum rau tuav cov dej kub.

3. Ncaj phab ntsa ob txheej khob

Txhawm rau nthuav dav daim ntawv thov ntau yam ntawm cov ntawv khob, xyoo 1940, ncaj-walled ob-txheej ntawv khob tau qhia rau lub khw. Lub khob ntawv no tsis yog yooj yim nqa xwb, tab sis kuj siv tau los tuav cov dej kub. Tom qab ntawd, cov chaw tsim khoom siv latex rau cov khob no los npog" paperboard tsw" ntawm daim ntawv thiab ntxiv dag zog rau cov dej-pov thawj ntawm cov ntawv khob. Ib txheej wax-coated khob kho nrog latex txheej yog dav siv nyob rau hauv kev pab cuam tus kheej vending machine los tuav kas fes kub.

4. Yas coated ntawv khob

Qee lub tuam txhab khoom noj tau pib txheej polyethylene rau ntawm daim duab los qhia kom muaj kev thaiv thiab nruj ntawm daim ntawv ntim. Txij li thaum lub melting point ntawm polyethylene yog ntau dua li ntawm cov quav ciab, lub khob tshiab dej haus ntawv khob coated nrog cov khoom no yuav siv tau los tuav cov dej kub thiab daws qhov teeb meem ntawm cov khoom zoo uas cuam tshuam los ntawm melting ntawm cov khoom txheej. Nyob rau tib lub sijhawm, cov xim polyethylene yog smoother dua li cov xim qub 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.