1. Quantitative: Qhov hnyav ib cheeb tsam ntawm daim ntawv hu ua quantitative. Nws tuaj yeem hais tias qhov ntau yog ib qho ntawm cov cim qhia kev ua tau zoo tshaj plaws ntawm peb cov ntawv kraft, thiab qhov ntau yog suav tias yog cov yam ntxwv ntawm cov ntawv kraft. Qhov thiaj li hu ua kom muaj nuj nqis yog hais txog qhov loj ntawm ib chav tsev ntawm daim ntawv thiab cov ntawv ntawv ntsuas los ntawm txoj kev xeem uas tau teev tseg hauv kev tshuaj xyuas, nrog rau chav tsev ntawm g / m2. Qhov tseeb ntawm kraft daim ntawv txiav txim kom muaj nuj nqis muaj feem xyuam rau thaj tsam qhov tseeb ntawm cov qauv kuaj thiab qhov tseeb ntawm cov khoom hnyav. Txoj kev xeem tus qauv muaj cov cai nruj rau cov qauv txuag cov twj paj nruag thiab cov cuab yeej ruaj khov.
2. Thickness: lub thickness ntawm kraft ntawv. Lub gram hnyav ntawm kraft ntawv yog hais txog lub thickness. Feem ntau, lub thickness ntawm siab gram hnyav yog tuab. Lub thickness xoob yog cuam tshuam los ntawm cov txheej txheem fiber ntau thaum tsim, nias lub zog thiab qhov sib txawv ntawm cov khoom siv fiber ntau. Tej zaum txoj kev yooj yim tshaj plaws yog los kho cov thickness los ntawm kev hloov cov nias. Lub siab yog loj thiab lub thickness yog me me.
3. Kev tawg tsis kam: Nws yog qhov ntsuas lub cev muaj zog. Nws yog qhov siab tshaj plaws uas daim ntawv thiab daim ntawv dais ntawm chav tsev, thiab chav tsev yog kpa. Feem ntau, peb ntsuas nws ntawm Mullen burst resistance instrument ntawm lub nplhaib compression annular. Tus nqi ncaj qha tau los ntawm qhov ntsuas yog hu ua lub zog tawg tag. Faib lub zog tawg tag los ntawm daim ntawv hnyav kom tau txais qhov ntsuas tawg ntawm daim ntawv lossis daim ntawv ntawv.
