Kuumba ndiyo maitiro ekugadzira akasiyana mapolymers (hupfu, pellets, mhinduro kana dispersions) kuita zvigadzirwa muchimiro chaunoda. Ndiyo inonyanya kukosha muhurongwa hwese hwekuumbwa kwezvinhu zvepurasitiki uye kugadzirwa kwezvinhu zvese zvepolymer kana maprofile. Nzira inodiwa.Plastic molding nzira dzinosanganisira extrusion molding, jekiseni molding, compression molding, transfer molding, laminate molding, blow molding, calender molding, foam molding, thermoforming nedzimwe nzira dzakawanda, dzose dzine simba radzo.
Thermoforming inzira yekugadzira zvigadzirwa uchishandisa thermoplastic sheets seyakagadzirwa, iyo inogona kuverengerwa kune yechipiri kuumbwa kwemapurasitiki. Kutanga, pepa rakachekwa mune imwe saizi uye chimiro chinoiswa pafuremu ye mold, uye inopisa kusvika kune yakakwira elastic state pakati peTg-Tf, iyo pepa inotambanudzwa ichiri kupisa, uye ipapo kumanikidza kunoshandiswa kuti ivhare. kune mold Chimiro chechimiro chakafanana nechimiro chepamusoro, uye chigadzirwa chinogona kuwanikwa mushure mekutonhora, kuumba uye kucheka.Munguva ye thermoforming, iyo inoshandiswa kumanikidza inonyanya kuenderana nekumanikidzwa mutsauko unoumbwa nekutsvaira uye kuunza mweya wakamanikidzwa pamativi ese epepa, asiwo nenzira yekumanikidza kwemakanika uye hydraulic pressure.
Chimiro che thermoforming ndechekuti iyo yekuumba kumanikidza yakaderera, uye iyo thermoforming maitiro ndeaya anotevera:
bhodhi (shizha) zvinhu → kusungirira → kudziyisa → kudzvanywa → kutonhora → kuumba → zvigadzirwa zvakapedzwa zvishoma → kutonhora → kucheka. Iyo thermoforming yechigadzirwa chakapedzwa chakasiyana kubva kune imwe-nguva yekugadzirisa tekinoroji senge jekiseni molding uye extrusion. Haisi yepurasitiki resin kana pellets yekudziya kuumbwa kana kuenderera kuumbwa neiyo yakafanana muchinjikwa-chikamu kuburikidza nekufa; uye haisi kushandisa maturusi emuchina, maturusi uye dzimwe nzira dzekugadzira michina kucheka chikamu chepurasitiki. Tevere, kuwana chimiro chinodiwa uye saizi, asi yepurasitiki bhodhi (shiti) zvinhu, kudziyisa, kushandisa mold, vacuum kana kumanikidza kukanganisa bhodhi (shiti) zvinhu. Svika iyo inodiwa chimiro uye saizi, inowedzerwa nekutsigira maitiro, kuti uwane chinangwa chekunyorera.
Iyo thermoforming tekinoroji inogadzirwa zvichibva pane yekugadzira nzira yesimbi sheet. Kunyangwe iyo nguva yekuvandudza haina kureba, asi iyo yekumhanyisa kumhanya inokurumidza, dhigirii re automation rakakwira, mold yakachipa uye iri nyore kutsiva, uye kuchinjika kwakasimba. Inogona kugadzira zvigadzirwa zvakakura sendege uye zvikamu zvemotokari, zvidiki semakapu ekunwa. Zvisaririra zviri nyore kudzokorora. Inogona kugadzira mapepa akatetepa kunge 0.10mm gobvu. Aya mapepa anogona kuve akajeka kana opaque, crystalline kana amorphous. Mienzaniso inogona kudhindwa papepa kutanga, kana mapatani ane mavara akajeka anogona kudhindwa mushure mekuumbwa.
Mumakore makumi matatu kusvika makumi mana apfuura, nekuda kwekuwedzera kwakasiyana-siyana kwe thermoplastic sheet (shiti) zvinhu semidziyo yakabikwa, kuenderera mberi kwekuvandudzwa kweiyo thermoforming process michina, uye kushandiswa kwakakura kwezvigadzirwa, tekinoroji ye thermoforming yakagadziridzwa. uye midziyo iri kuramba ichiwedzera kukwana. Kuenzaniswa nekuumbwa kwejekiseni, thermoforming ine zvakanakira zvekugadzirwa kwakanyanya, nzira yakapusa, kushoma kwekudyara kwemidziyo, uye kugona kugadzira zvigadzirwa zvine nzvimbo dzakakura. Nekudaro, mutengo we thermoforming mbishi zvinhu wakakwira, uye kune akawanda post-processing maitiro ezvigadzirwa. Nekuenderera mberi kwekuvandudza tekinoroji yekugadzira uye kudiwa kwekuwedzera mabhenefiti ehupfumi, thermoforming michina yakabvisa zvishoma nezvishoma yekare seyakazvimirira epurasitiki bhodhi (shiti) zvinhu zvekuumba sisitimu, uye yatanga kusanganiswa nemimwe michina yekugadzira kusangana nekuumbwa. Mutsetse wakakwana wekugadzira wezvido zvakati, nekudaro zvichiwedzera kuvandudza kugadzirwa kwakanaka uye kuderedza mutengo wekugadzira wechigadzirwa chekupedzisira.
Thermoforming inonyanya kukodzera kugadzirwa kwezvigadzirwa nemadziro matete uye nzvimbo huru dzepamusoro. Mhando dzepurasitiki dzinowanzo shandiswa dzinosanganisira polystyrene, plexiglass, polyvinyl chloride, abs, polyethylene, polypropylene, polyamide, polycarbonate uye polyethylene terephthalate.
Nguva yekutumira: Kubvumbi-20-2021