I-valve yeplastiki isetyenziswa kakhulu ivalve, inezibonelelo zokunganyangeki, ubunzima obukhanyiso, zinxibe ukuxhathisa, njl njl. Oku kulandelayo yimbali yophuhliso lweevali zeplastiki.
Kwiminyaka yee-1950s, kunye nophuhliso olukhawulezileyo lweshishini lekhemikhali, imfuno yeevavazi inyuke kancinci. Ngeli xesha, izinto zeplastiki ziye zasetyenziswa ngokubanzi kwicandelo lemizi-mveliso, ke ezinye iinjineli zaqalisa ukufunda indlela yokusebenzisa izixhobo zeplasitiki ekwenzeni i-valve. I-valves zeplastiki yokuqala zenziwa ikakhulu zisebenzisa i-Polyviny ye-Polyviny ye-pilorinyl chloride (PVC), enesithintelo esihle, kodwa iipropathi zayo zihlwempuzekile kwaye zilungele indalo ephantsi yokusebenza.
Ngeminyaka yee-1960, kunye nophuhliso oluqhubekayo lweTekhnoloji yePlastiki, i-Polypropylene (PP), iPolytetrafluOroflum (PTFE) kunye nezinye izinto bezisetyenziswa ekwenziweni kweevalve zeplastiki. Ezi zixhobo zinezixhobo ezingcono zoomatshini kunye nokunganyangeki kwe-scoresion, kwaye kungakwazi ukuziqhelanisa noluhlu olubanzi lwendawo yokusebenza.
Ngeminyaka yee-1970, ngokuvuthwa kwetekhnoloji ye-valve yeplastiki, eyaziswa ziivalves zeplastiki ze-valvinyl (PVDF), i-valves yentsimbi, njl .. .. Guqula ukuya kwindalo yokusebenza ngakumbi.
Ekuqaleni kwenkulungwane yama-21, ngokwazisa ngokukhuselekileyo kukhuseleko lwendalo, iimfuno zeValveve ziya ziphakama kwaye ziphezulu. Ngeli xesha, ezinye izinto zeplastiki ezintsha zasetyenziswa ekwenzeni kweevalves, njengePolyetherketone (Pek), Polymimide (PI) kunye nezinye izixhobo zeplastiki eziphezulu. Ezi zixhobo zinezixhobo ezingcono zoomatshini kunye nokunganyangeki kwe-scoresion, kwaye kunokuhlangabezana nendawo efunwayo yokusebenza.
Ngamafutshane, ngokuphuhliswa kweshishini lekhemikhali kunye nokuphuculwa kwetekhnoloji ye-plastics, i-valves yeplastiki ziye zafumana ukuphuculwa kwezinto zeplastiki ezivela kwizinto zeprinta zokuqala, zihlala ziphucula ukuxhathisa i-PROSIONAL, Isicelo, siba sisixhobo esibalulekileyo nezingasebenziyo semichiza, ipetrochemical kunye nezikhuselo zokusingqongileyo.
IXESHA LOKUQALA: UMar-02-2023