I-Blow molding, eyaziwa nangokuthi i-hollow blow molding, iwuhlelo olukhula ngokushesha lwepulasitiki.Inqubo yokubumba ukuqhuma Phakathi neMpi Yezwe II, amasondo avuthululwe ekuqaleni asetshenziselwa ukukhiqiza izitsha ze-polyethylene ezingaminyana kancane.Ngasekupheleni kwawo-1950, lapho kuzalwa i-polyethylene ephezulu kakhulu kanye nokuthuthukiswa kwemishini yokubumba, ubuchwepheshe bokubumba i-blow e-Kunshan babusetshenziswa kabanzi.Umthamo weziqukathi ezingenalutho ungafinyelela ezinkulungwaneni zamalitha, futhi ukukhiqizwa okuthile kusebenzisa ukulawula kwekhompyutha.Amapulastiki afanele ukubunjwa kokushaywa ahlanganisa i-polyethylene, i-polyvinyl chloride, i-polypropylene, i-polyester, njll., futhi iziqukathi ezingenalutho ezitholiwe zisetshenziswa kabanzi njengeziqukathi zokupakisha zezimboni.
Ngokwendlela yokukhiqiza i-parison, i-blow molding ingahlukaniswa ibe yi-extrusion blow molding kanye ne-injection blow blowing.Ezisanda kuthuthukiswa zihlanganisa ukubunjwa kwe-multi-layer blow and stretch blow molding.Ipharishi yepulasitiki eyishubhu etholwe nge-extrusion noma ukubunjwa komjovo we-thermoplastic resin ifakwa esikhunjini esihlukanisayo ngenkathi kushisa (noma ishiselwa esimweni esithambisayo), futhi umoya ocindezelwe ungeniswa ejele ngokushesha ngemuva kokuba isikhunta sivaliwe ukuze kuqhunyiswe i-parison yepulasitiki. .Iyanda futhi inamathele eduze kodonga lwangaphakathi lwesikhunta, futhi ngemva kokupholisa nokudiliza, kutholakala imikhiqizo ehlukahlukene engenalutho.Inqubo yokukhiqiza ifilimu eshaywayo ifana kakhulu nomgomo wokuvuthela ukubunjwa kwemikhiqizo engenalutho, kodwa ayisebenzisi isikhunta.Ngokombono wokuhlukaniswa kobuchwepheshe bokucutshungulwa kwepulasitiki, inqubo yokubumba ifilimu eshaywayo ngokuvamile ifakwa ku-extrusion.Inqubo yokubumba igalelo ekuqaleni yayisetshenziselwa ukukhiqiza izitsha ze-polyethylene ezinezinga eliphansi phakathi neMpi Yezwe II.Ngasekupheleni kwawo-1950, lapho kuzalwa i-polyethylene ephezulu kakhulu kanye nokuthuthukiswa kwemishini yokubumba i-blow, ubuchwepheshe bokubumba busetshenziswa kabanzi.Umthamo weziqukathi ezingenalutho ungafinyelela ezinkulungwaneni zamalitha, futhi ukukhiqizwa okuthile kusebenzisa ukulawula kwekhompyutha.Amapulastiki afanele ukubunjwa kokushaywa ahlanganisa i-polyethylene, i-polyvinyl chloride, i-polypropylene, i-polyester, njll., futhi iziqukathi ezingenalutho ezitholiwe zisetshenziswa kabanzi njengeziqukathi zokupakisha zezimboni.
Isikhathi sokuthumela: Jun-20-2023