Tom qab cov khoom tsim, cov yas zaj duab xis yog tsim los ntawm lub hnab tuj los ntawm lub tshuab, thiab cov yas zaj duab xis yog txiav rau hauv filaments. Tom qab ntawd cov cua sov yog siv los tsim nws los ua PP raw yarn, uas yog ces woven thiab laminated los ua ib tug tuj hnab puag ntaub.
Kev tsim cov hnab ntim khoom yuav tsum tau sling stitching. Qhov no yog tag nrho cov txheej txheem ntau lawm. Nws zoo nkaus li yooj yim, tab sis koj yuav tsum tau ceev faj thaum lub sijhawm tsim khoom, txwv tsis pub nws yuav ua teeb meem rau kev siv tom qab. Lub hnab ntim tau zoo heev txhim kho tib neeg txoj haujlwm ua haujlwm thiab ua kom muaj kev ua haujlwm ntau lawm. Tuj hnab saib yooj yim, tab sis lawv cov khoom tsis yog. Kev tsim ntawm lub hnab ntim yuav tsum ua raws li kev tiv thaiv ib puag ncig thiab tsis ua rau kev puas tsuaj rau ecology. Nyob rau tib lub sijhawm, cov khoom ntim yuav tsum tau ua kom ntseeg tau tias cov khoom tuaj yeem tiv thaiv kev nyab xeeb thaum thauj khoom, tshem tawm, khaws cia, thiab thauj mus los. Yog li ntawd, cov kev cai rau tuj lub hnab manufacturers kuj nruj heev.
Ob txhais tes ton hnab kuj tseem meej heev, peb feem ntau muab qee cov hmoov nplej, pub, thiab lwm yam khoom siv. Qhov no tsis yog teeb meem. Hom hnab no muaj qhov hnyav hnyav thiab qhia tau hais tias qhov zoo ntawm qhov zoo thiab qhov ntom ntom. Qee cov khoom siv tsis siv nyob hauv, thiab cov khoom seem yuav puas. Piv nrog cov hnab ntim tshiab, siv cov hnab ntim khoom thib ob. Nws yog qhov tsawg, feem ntau zoo nkauj thiab huv si thaum ua tiav thiab kho, thiab qhov zoo yog qhov zoo. Lub tonnage ntawm lub hnab ua khoom yog ua los ntawm polypropylene. Kuv hnov tias PP yog crystalline polymer. Qhov tsim nyog PP hauv cov yas yog 0.91g/Cm3 (tsawg dua dej). Hauv cov yas dav dav, qhov kub ntawm PP yog 80-100 degree thiab tuaj yeem ua rau boiling dej. PP muaj qhov zoo ntawm kev ntxhov siab tawg tsis kam thiab siab flexural qaug zog lub neej. Nws zoo dua li cov khoom siv PE. PP cov khoom yog lub teeb hauv qhov hnyav, muaj zog toughness, thiab cov khoom siv tshuaj zoo. Qhov tsis zoo ntawm PP yog: tsis tshua muaj qhov tseeb thiab tsis muaj rigidity. Huab cua tsis kam Nws yog aging, nkig, thiab yooj yim rau deform. PPR (pentatricopeptide repeats), tseem hu ua random copolymer polypropylene (PPR), muaj kev ua haujlwm siab thiab nkag siab thaum haus. Nws muaj cov khoom zoo heev thiab muaj cov txiaj ntsig zoo ntawm random copolymerized polypropylene. Nws tuaj yeem siv dav hauv kev tsim cov khoom ntim, cov khoom siv hauv tsev, thiab ntau yam yeeb yaj kiab.