Thaum nws los txog rau kev ntim khoom, muaj ntau txoj kev xaiv nyob ntawm cov khoom siv, kev tsim khoom, thiab kev npaj siv. Ob hom raj siv hauv ntim yog cov raj extruded thiab laminated tubes.
Extruded raj yog tsim los ntawm kev yuam cov yas yaj los ntawm kev tuag los ua lub raj zoo. Cov txheej txheem no yog hu ua extrusion thiab muaj peev xwm ua cov raj nrog cov tuab tuab thiab txoj kab uas hla. Extruded raj tuaj yeem tsim los ntawm ntau yam yas xws li polyethylene, polypropylene, thiab polyester. Lawv yog cov kev xaiv zoo rau kev ntim khoom xws li tshuaj txhuam hniav, tshuaj pleev ib ce, thiab tshuaj.
Ntawm qhov tod tes, cov raj laminated yog tsim los ntawm kev sib txuas ob peb txheej ntawm cov ntaub ntawv xws li yas, txhuas, thiab ntawv los ua ib lub raj. Cov khaubncaws sab nraud povtseg yog fused ua ke los tsim kom muaj zog thiab ruaj khov kev xaiv ntim. Cov raj laminated feem ntau yog siv los ntim cov khoom uas yuav tsum tau muaj kev cuam tshuam rau cov pa oxygen, noo noo, thiab lub teeb. Lawv feem ntau yog siv los ntim cov khoom xws li cov khoom noj, tshuaj, thiab cov khoom tu tus kheej.
Qhov sib txawv tseem ceeb ntawm extruded thiab laminated tubes yog cov txheej txheem tsim khoom thiab cov khoom siv. Extruded raj yog tsim los ntawm ib qho khoom siv thiab yog tsim los ntawm ib qho txheej txheem. Laminated tubes, ntawm qhov tod tes, yog tsim los ntawm ntau txheej txheej ntawm cov ntaub ntawv thiab xav tau cov tshuab tshwj xeeb los tsim.
Extruded raj feem ntau yog ib qho kev xaiv zoo tshaj plaws rau cov khoom lag luam uas tsis tas yuav muaj cov khoom thaiv siab vim lawv feem ntau ua los ntawm ib txheej ntawm cov yas. Lawv yog cov kev xaiv pheej yig dua piv rau cov raj laminated thiab tsim nyog rau cov khoom uas muaj lub neej txee luv dua.
Cov raj laminated, txawm li cas los xij, yog qhov kev xaiv zoo dua rau cov khoom lag luam uas xav tau cov khoom muaj kev cuam tshuam loj xws li cov khoom noj thiab tshuaj. Lawv kim dua los tsim piv rau cov raj extruded tab sis muaj kev tiv thaiv zoo dua tiv thaiv ya raws, oxygen, thiab lub teeb. Laminated tubes tseem muaj lub neej txee ntev dua piv rau cov raj extruded, ua rau lawv qhov kev xaiv zoo tshaj plaws rau cov khoom uas xav tau lub txee ntev dua.
Hauv kev xaus, ob qho tib si extruded thiab laminated raj muaj lawv qhov zoo thiab qhov tsis zoo nyob ntawm seb hom khoom ntim khoom. Extruded tubes muab cov nqi tsim nyog thiab txhim khu kev qha rau cov khoom lag luam uas tsis tas yuav muaj cov khoom thaiv siab, thaum cov hlab laminated muaj kev tiv thaiv zoo tshaj rau cov khoom uas yuav tsum tau muaj kev cuam tshuam rau oxygen, noo noo, thiab lub teeb. Nws yog ib qho tseem ceeb uas yuav tsum xav txog cov kev ntim khoom kom zoo ua ntej xaiv ntawm cov raj extruded thiab laminated.
