Kev tshuaj xyuas ntawm PVC Stretch Fabric Forming Process
PVC stretch npuag, cov khoom siv hluavtaws zoo heev thiab ruaj khov, yog siv dav hauv cov khoom siv sab nraum zoov, tsev pheeb suab, cov ntaub tshaj tawm, thiab cov khoom siv kho mob. Nws cov txheej txheem tsim ncaj qha cuam tshuam rau cov khoom siv lub cev thiab kev pabcuam lub neej, ua rau nws tseem ceeb heev rau kev tswj cov txheej txheem tseem ceeb.
Cov txheej txheem tsim ntawm PVC stretch npuag muaj plaub kauj ruam tseem ceeb: cov khoom siv raw sib xyaw, extrusion calendering, stretching thiab orientation, thiab post- ua. Ua ntej, polyvinyl chloride (PVC) resin yog tov nrog additives xws li plasticizers, stabilizers, thiab lubricants nyob rau hauv tsim nyog proportions thiab sib npaug zos rau ib tug siab -blender ceev los ua ib tug muab tshuaj txhuam nrog ib tug tshwj xeeb viscosity. Qhov kev xaiv ntawm cov khoom ntxiv rau theem no ncaj qha cuam tshuam rau cov khoom siv yooj yim, huab cua tsis kam, thiab UV tsis kam.
Cov sib tov ces nkag mus rau hauv lub extruder, qhov uas nws yog melted ntawm ib tug high kub (kwv yees li 160{1}}180 degree) thiab extruded los ntawm ib tug T-tuag rau hauv ib daim ntawv. Daim ntawv yog ces calendered nrog rollers los tswj thickness thiab nto smoothness. Lub calendering kub yuav tsum raug tswj kom tsis txhob muaj cov khoom decomposition vim overheating los yog kev ntxhov siab sab hauv los ntawm undercooling.
Stretching thiab orientation yog cov txheej txheem tseem ceeb uas muab PVC stretch ntaub nrog nws cov elasticity siab. Daim ntawv yog preheated (feem ntau yog 80-120 degree) ua ntej yuav ncab uniaxially los yog biaxially nyob rau hauv ib tug longitudinal los yog transverse stretching tshuab. Lub stretch ratio feem ntau yog 2-5 zaug, aligning cov molecular chains nyob rau hauv cov kev taw qhia ntawm quab yuam, ho txhim kho cov khoom elongation thiab resilience. Qee cov khoom lag luam high-end siv cov cuab yeej siv txuas ntxiv txhawm rau txhim kho cov khoom sib npaug.
Thaum kawg, cov ntaub stretched undergoes cua sov thiab txias. Kev teeb tsa cua sov muaj lub sijhawm luv luv ntawm qhov kub siab (kwv yees li 100-}130 degree) txhawm rau txhim kho cov qauv molecular thiab tshem tawm cov kev ntxhov siab uas seem. Kev ua kom txias yog ua tiav nrog huab cua lossis dej kom ntseeg tau tias qhov chaw ruaj khov. Qee cov khoom lag luam kuj xav tau kev kho saum npoo, xws li UV-resistant coatings los yog nplaim retardants, los txhim kho kev ua haujlwm.
Cov txheej txheem molding rau PVC stretch ntaub yuav tsum nruj tswj ntawm kub, ceev, thiab nro tsis. Kev sib txawv ntawm txhua kauj ruam tuaj yeem ua rau cov khoom siv tsis zoo. Kev txhim kho thev naus laus zis, xws li kev taw qhia txog kev saib xyuas online thiab kev tswj hwm lub tshuab hluav taws xob, yog tsav cov txheej txheem niaj hnub mus rau kev ua tau zoo dua thiab ib puag ncig tus phooj ywg, muab cov khoom siv zoo tshaj plaws rau kev siv hauv qab.