Izinzuzo zokubunjwa kwe-extrusion blow

Umshini Wokubumbayilezo ezisetshenziselwa ukwenza izimo ngezinto ezifana nepulasitiki, irabha nensimbi.Kunezindlela eziningi ezahlukene zokubumba izinto zokwakha.Amasu omshini wokubumba we-Stretch Blow Molding asetshenziswa ama-thermoses kanye ne-thermoplastics futhi lokhu kushintsha imvelo yepulasitiki ecutshungulwe ngalawa masu.Amasethi e-Thermo enza ipulasitiki igcine isimo esibunjwe ngayo. Uma usuzama ukuyishintsha, kuzodingeka uyincibilikise futhi kule nqubo, le pulasitiki izoshisa futhi ingabi namsebenzi.Ama-thermoplastic abunjiwe enziwa ngezingcezu ezincane ezenza ukuhamba kwawo kube lula bese encibilika ndawonye ukuze enze ichibi ngemva kwalokho anikezwe ukuma kwanoma yini umenzi afuna ukuyikhiqiza.

1) Izindleko zomshini wokubumba i-extrusion blowing ishibhile kunezomshini wokubumba umjovo, cishe ingxenye eyodwa kwezintathu yomshini wokubumba umjovo.

I-2) Ekubunjweni okufuthayo, i-preform yenziwa ngaphansi kwengcindezi ephansi ngokushisa kwemishini ye-extrusion, kulesi simo, ukucindezeleka okusele kwemikhiqizo kuncane.Ngokusebenza kwayo okuhle ekuqineni, umthelela, ukugoba nezinye izindawo ezihlukahlukene, Inomsebenzi omuhle.

3)Ekubumbeni kokushaywa komjovo, ipulasitiki inyibilika ngomfutho ophezulu (15–140Mpa) ngokusebenzisa umgijimi wesikhunta kanye nesango, okuzoholela ekusakazweni kokucindezeleka okungalingani.

4)Amangqamuzana epulasitiki esikhunta eqhumayo (isb, i-PE) angaphezulu kwalawo esikhunta somjovo.Imikhiqizo yokubumba igalelo elinjalo inokuqina komthelela omkhulu kanye nokumelana okuphezulu nokusebenza kokuqhekeka kokucindezeleka kwemvelo, okuvuna kakhulu ukukhiqizwa komthamo omkhulu. amabhodlela epulasitiki.

5) Ukuqina kodonga lwemikhiqizo yokubumba igalelo kungaba mncane kakhulu ngenkathi imikhiqizo yokubumba umjovo ayikwazi ukuba mncane njengenqubo yokubumba yokuvunguza.

I-6) Inqubo yokubumba i-Blow ingabumba imikhiqizo eyinkimbinkimbi futhi engavamile, kodwa inqubo yokubumba umjovo kufanele ikhiqize izingcezu ezimbili noma ngaphezulu, bese inamathela ngeglue noma ukuyibopha noma isebenzisa i-welding ye-ultrasonic.