Cov hnab looj tes pov tseg feem ntau yog cais raws li lawv qhov kev siv, kev tsim khoom, thiab kev muaj peev xwm tiv thaiv, nrog rau cov ntawv thov sib txawv xav tau cov qauv zoo sib xws. Cov pawg feem ntau suav nrog - lub hom phiaj, zaub mov- qib, qib kho mob- qib, thiab cov hnab looj tes muaj- qib. Cov qhabnias no txawv ntawm cov khoom xaiv, ib puag ncig tsim khoom, qauv kev nyiam huv, thiab kev ua haujlwm tshwj xeeb.
General -Cov hnab looj tes uas siv tau yog siv rau kev tiv thaiv yooj yim hauv kev ua ub no txhua hnub, xws li kev tu tsev lossis kev teeb tsa. Feem ntau yog tsim los ntawm cov ntaub ntawv xws li PE lossis PVC, lawv muaj kev tiv thaiv yooj yim rau cov av thiab dej tab sis muaj kev xav tau qis dua ntawm cov khoom siv purity, lub zog, thiab kev tiv thaiv kev ua tau zoo, raws li lawv tau tsim los ua kom tau raws li cov qauv kev xav tau.
Khoom noj khoom haus- cov hnab looj tes uas siv tau qib yog siv hauv cov haujlwm xws li kev ua zaub mov, khoom noj khoom haus, thiab ntim khoom noj. Lawv yuav tsum tau tsim los siv cov ntaub ntawv uas ua raws li cov zaub mov - tiv tauj cov cai thiab raug tswj nruj heev txog kev tu cev thiab kev tsiv teb tsaws ntawm cov khoom tsis zoo kom tsis txhob muaj kab mob tshwm sim thaum tuav zaub mov. Kev kho mob- qib hnab looj tes siv tau yog ua raws li cov qauv nruj dua; lawv yuav tsum tau soj ntsuam nruj kom ua raws li qhov yuav tsum tau ua rau kev sib khi ruaj khov, lub zog tensile, tsis muaj menyuam, thiab kev tiv thaiv kev ua haujlwm.
Kev lag luam- cov hnab looj tes pov tseg qib yog siv nyob rau hauv ib puag ncig xws li kev tsim khoom, kev ua haujlwm hauv chav kuaj, thiab kev tu vaj tse, qhov chaw tsom mus rau kev puas tsuaj, roj tsis kam, tshuaj tiv thaiv, thiab lub zog tsim kua muag. Txhawm rau txhim kho kev nyab xeeb, cov hnab looj tes no yog tsim los nrog cov khoom sib txawv thiab cov thicknesses haum rau kev ua haujlwm tshwj xeeb. Thaum xaiv cov hnab looj tes pov tseg, nws yog ib qho tseem ceeb uas yuav tsum xaiv cov qib tsim nyog rau daim ntawv thov tshwj xeeb kom tsis txhob muaj teeb meem kev ua tau zoo los ntawm kev tsis sib haum xeeb ntawm qib hnab looj tes thiab cov haujlwm uas yuav tsum tau ua.