Thaum hloov los ntawm kev nplua -mesh ntim rau cov txiv hmab txiv ntoo me kom ntxhib- mesh nets rau cov melons loj, cov neeg ua haujlwm feem ntau nug: Koj yuav kho qhov mesh ntom ntawm EPE ua npuas ncauj tshuab li cas? Mesh ntom-los yog mesh openness- ntawm lub tshuab ua npuas ncauj epe yog tswj los ntawm kev sib xyaw ua ke ntawm extrusion tuag configuration, thauj -tawm (siv-) nce, thiab qhov nthuav piv ntawm butane-foamed polyethylene. Kev kho qhov tsis zoo ntawm koj lub tshuab ua npuas ncauj epe ua kom lub tes tsho net muaj qhov tseeb qhov loj, elasticity, thiab kev pab them nqi rau cov txiv hmab txiv ntoo lossis cov khoom lag luam.
Thawj txoj hauv kev los hloov mesh ntom ntawm epe ua npuas ncauj tshuab yog los ntawm kev kho covrub-tawm (rub) ceev piv rau extruder ntsia hlau RPM. Lub taub hau tuag ntawm epe ua npuas ncauj net tshuab extrudes ib tug tubular net nrog ib tug taag naj npawb ntawm strands (feem ntau 4, 6, los yog 8 longitudinal tav txiav txim los ntawm cov tuag mandrel). Yog tias koj nce qhov kev coj ua- nce nrawm thaum ua kom ceev ceev tas li, lub vas tau ncab ntev dua, ua rau lub pob zeb diamond- zoo li qhov qhib loj (ntau qhib, qis dua). Conversely, slowing down lub puller thaum tswj extrusion tso zis compresses lub mesh, ua rau qhib me thiab nruj (ntau dua ntom). Feem ntau niaj hnub epe ua npuas ncauj net tshuab qauv siv qhov sib txawv zaus tsav (VFD) ntawm lub haul- tawm tsev tshwj xeeb rau lub hom phiaj no.
Qhov thib ob yam yog qhovtuag orifice loj thiab tus naj npawb ntawm radial slitshauv tuag. Ib tug tuag nrog ntau slits tsim ntau longitudinal tav, uas tuaj yeem ua rau lub ntsej muag pom zoo. Qee cov epe ua npuas ncauj net tshuab tso cai swapping lub puab mandrel los yog lub nplhaib tuag sab nraud los hloov cov strand suav. Txawm li cas los xij, lub cev geometry ntawm qhov tuag feem ntau yog tsau rau ntawm pwm teeb, yog li niaj hnub hloov kho qhov ceev yog ua los ntawm kab nrawm piv tsis yog hloov pwm.
Foaming ratio (butane txhaj tus nqi)kuj influences perceived density. Qhov feem pua ntawm butane nthuav dav PE ua npuas ncauj, thickening cov strands thiab me ntsis kaw qhov tsis pom kev. Txo foaming tus neeg sawv cev ua rau cov strands thinner thiab cov mesh zoo li qhib. Cov neeg ua haujlwm yuav tsum tau kho lub ntsuas dej butane maj mam thiab saib xyuas qhov profile, vim tias cov roj ntau dhau tuaj yeem ua rau npuas tawg lossis nthuav dav tsis sib xws ntawm epe foam net tshuab.
Tom qab hloov chaw, tso cai rau 5-10 feeb rau cov txheej txheem kom ruaj khov, tom qab ntawd ntsuas qhov qhib mesh nrog lub caliper lossis tus pas ntsuas tawm tsam koj tus qauv pom zoo. Re- txheeb xyuas lub cheeb ntawm cov tubular net siv lub tes tsho loj lossis lub ntsuas hluav taws xob, thiab ua kom zoo - kho VFD kom txog rau thaum ob qho tib si txoj kab uas hla thiab mesh qhib tau raws li qhov tshwj xeeb. Ib txwm kaw lub hau ntswj RPM, nqa - tawm Hz, qhov kub thiab txias, thiab butane siab rau txhua daim ntawv qhia khoom ntawm koj lub tshuab ua npuas ncauj epe ua npuas ncauj kom paub tseeb tias rov ua dua thaum hloov pauv yav tom ntej.
In summary, to adjust mesh density on an epe foam net machine, modify the take-up speed versus extruder output to stretch or compress the mesh, select the appropriate die/mandrel for strand count, and balance the foaming agent injection. Kev paub txog cov kev tswj hwm no tso cai rau koj lub tshuab ua npuas ncauj ua npuas ncauj los tsim txhua yam los ntawm nruj zoo - lub tes tsho mesh kom qhib cov nets ntxhib nrog zoo ib yam.