Cov hnab ntawv yog lub hnab ua los ntawm cov ntawv lossis ntawv- muaj cov ntaub ntawv, npog ntau yam xws li kev yuav khoom, ntim khoom, thiab kev lag luam. Cov ntaub ntawv muaj xws li dawb cardboard, coated ntawv, thiab kraft ntawv. Lawv tuaj yeem raug cais los ntawm txoj kev sib khi (qhib- sab saum toj sewn- hnab hauv qab, valve- lub hnab kaw, thiab lwm yam) thiab los ntawm kev tsim qauv (perforated drawstring, drawstring nkaus xwb, thiab lwm yam). Vim lawv cov khoom siv biodegradable thiab recyclable, cov hnab ntawv feem ntau suav hais tias yog ib qho kev tiv thaiv ib puag ncig, thiab cov cai hauv ntau lub teb chaws tau txhawb nqa lawv cov khoom siv yas hloov maj mam.
Kev cuam tshuam ib puag ncig ntawm cov hnab ntawv: Virgin pulp ntawv hnab siv cov khoom siv hav zoov, thiab cov hnab ntim khoom siv rov ua dua tau siv zog ntau dua thiab muaj kuab paug; lawv qhov kev cuam tshuam ib puag ncig tag nrho tuaj yeem tshaj li cov hnab yas. Cov khoom tsis sib haum xeeb muaj nyob hauv thaj chaw xws li ntim khoom noj, thiab qee lub tuam txhab tau raug nplua rau kev siv cov khoom siv tsis zoo los yog kev tshuaj xyuas tsis zoo. Cov cai tswjfwm tau maj mam ntxiv dag zog rau cov qauv tsim khoom thiab cov txheej txheem coj mus kuaj. Nrog cov txheej txheem optimization, qhov chaw ntawm cov nroj tsuag fiber ntau lub hnab yog nce, thiab cov ntawv dawb kraft, uas tsis tas yuav lamination, tau dhau los ua cov khoom tseem ceeb ntawm ib puag ncig tus phooj ywg tote hnab.
