Lub hnab ntim ntau yog lub hnab loj siv rau kev thauj thiab khaws cov khoom, feem ntau yog ua los ntawm cov ntaub ntawv hnav-tiv taus thiab ruaj khov. Nrog rau kev loj hlob sai ntawm kev lag luam thoob ntiaj teb thiab kev txhim kho ntawm kev lag luam logistics, cov hnab ntim khoom tau nce ntxiv hauv kev thauj mus los thiab ntim khoom. Cov ntaub ntawv tseem ceeb ntawm cov hnab ntim khoom feem ntau suav nrog polypropylene (PP), polyethylene (PE) thiab polyester (PET), thiab lwm yam.
Polypropylene (PP) yog ib qho khoom siv ntau lub hnab ntim khoom. Nws muaj kev hnav zoo thiab ua haujlwm ntev thiab tuaj yeem tiv taus qee qhov hnyav thiab siab. Polypropylene yog ib qho hluavtaws fiber ntau polymerized los ntawm propylene monomers. Nws qhov zoo yog lub zog siab thiab rigidity, nrog rau cov tshuaj tiv thaiv corrosion thiab kub tsis kam. Polypropylene bulk hnab feem ntau yog ua los ntawm cov txheej txheem xws li thaum tshav kub kub sealing los yog xaws, thiab lub hnab ntawm ntau qhov sib txawv thiab cov duab tuaj yeem kho raws li qhov xav tau.
Polyethylene (PE) kuj yog ib qho khoom siv ntau lub hnab. Nws muaj qhov toughness zoo thiab cuam tshuam, uas tuaj yeem tiv thaiv kev puas tsuaj rau cov khoom thaum thauj. Polyethylene yog ib qho hluavtaws hluavtaws polymerized los ntawm ethylene monomers. Nws qhov zoo yog qhov yooj yooj yim thiab ductility, thiab tuaj yeem tiv taus qee qhov nro thiab extrusion. Polyethylene bulk hnab feem ntau yog tsim los ntawm cov txheej txheem xws li kev sib khi thaum tshav kub kub los yog gluing, uas tuaj yeem hloov mus rau ntau qhov kev xav tau ntim.
Polyester (PET) yog cov khoom siv qib siab hauv cov hnab ntim khoom. Nws muaj lub zog siab thiab hnav tsis kam thiab haum rau ntim cov khoom hnyav thiab ruaj khov. Polyester yog cov khoom siv hluavtaws ua los ntawm ester polymerization. Nws qhov zoo yog lub zog tensile zoo thiab tsim kua muag ua haujlwm, nrog rau kev ua haujlwm kub thiab tshuaj lom neeg. Polyester tej hnab feem ntau yog ua los ntawm cov txheej txheem xws li thaum tshav kub kub sealing los yog gluing, uas muaj peev xwm muab kev tiv thaiv ntim ntau dua.
Ntxiv nrog rau cov ntaub ntawv tseem ceeb saum toj no, lwm cov khoom siv pabcuam yuav raug siv los ua cov hnab ntim khoom loj. Piv txwv li, cov khoom siv hauv ob sab phlu tuaj yeem ua los ntawm polyethylene zaj duab xis lossis polyester zaj duab xis, thiab lwm yam, uas yog siv los ua kom cov sealing thiab dej tsis zoo ntawm lub hnab. Tsis tas li ntawd, lub hnab ntim kuj tseem tuaj yeem siv cov ntaub ntawv xws li hnav-tiv taus daim ntaub thiab cov ntaub nplaum ntxiv txhawm rau txhim kho lub zog thiab tensile lub zog ntawm lub hnab. Kev xaiv thiab siv cov khoom pabcuam no tuaj yeem hloov kho raws li cov kev xav tau tshwj xeeb.
Hauv luv luv, cov ntaub ntawv tseem ceeb ntawm cov hnab ntim khoom muaj xws li polypropylene (PP), polyethylene (PE), thiab polyester (PET). Lawv muaj cov yam ntxwv sib txawv thiab cov peev txheej ntawm daim ntawv thov thiab ua lub luag haujlwm tseem ceeb hauv kev xa khoom thiab ntim khoom. Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis tsis tu ncua, cov ntaub ntawv thiab cov txheej txheem tsim khoom ntawm lub hnab ntim khoom kuj tseem tsim kho tshiab thiab txhim kho kom tau raws li qhov xav tau ntawm kev lag luam sib txawv thiab kev siv ib puag ncig.